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-rw-r--r--src/Makefile6
-rw-r--r--src/jit/dis_mips.lua2
-rw-r--r--src/lib_jit.c6
-rw-r--r--src/lj_arch.h48
-rw-r--r--src/lj_asm_mips.h8
-rw-r--r--src/lj_ccall.c159
-rw-r--r--src/lj_ccall.h20
-rw-r--r--src/lj_ccallback.c70
-rw-r--r--src/lj_dispatch.c2
-rw-r--r--src/lj_emit_mips.h2
-rw-r--r--src/lj_frame.h25
-rw-r--r--src/lj_ircall.h4
-rw-r--r--src/lj_jit.h8
-rw-r--r--src/lj_target_mips.h45
-rw-r--r--src/vm_mips.dasc2
-rw-r--r--src/vm_mips64.dasc4849
16 files changed, 5201 insertions, 55 deletions
diff --git a/src/Makefile b/src/Makefile
index 3f25192b..16aeba19 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -257,7 +257,11 @@ ifneq (,$(findstring LJ_TARGET_MIPS ,$(TARGET_TESTARCH)))
257 ifneq (,$(findstring MIPSEL ,$(TARGET_TESTARCH))) 257 ifneq (,$(findstring MIPSEL ,$(TARGET_TESTARCH)))
258 TARGET_ARCH= -D__MIPSEL__=1 258 TARGET_ARCH= -D__MIPSEL__=1
259 endif 259 endif
260 TARGET_LJARCH= mips 260 ifneq (,$(findstring LJ_TARGET_MIPS64 ,$(TARGET_TESTARCH)))
261 TARGET_LJARCH= mips64
262 else
263 TARGET_LJARCH= mips
264 endif
261else 265else
262 $(error Unsupported target architecture) 266 $(error Unsupported target architecture)
263endif 267endif
diff --git a/src/jit/dis_mips.lua b/src/jit/dis_mips.lua
index 2bf8b389..19327d6f 100644
--- a/src/jit/dis_mips.lua
+++ b/src/jit/dis_mips.lua
@@ -38,7 +38,7 @@ local map_special = {
38 "multST", "multuST", "divST", "divuST", 38 "multST", "multuST", "divST", "divuST",
39 false, false, false, false, 39 false, false, false, false,
40 "addDST", "addu|moveDST0", "subDST", "subu|neguDS0T", 40 "addDST", "addu|moveDST0", "subDST", "subu|neguDS0T",
41 "andDST", "orDST", "xorDST", "nor|notDST0", 41 "andDST", "or|moveDST0", "xorDST", "nor|notDST0",
42 false, false, "sltDST", "sltuDST", 42 false, false, "sltDST", "sltuDST",
43 false, false, false, false, 43 false, false, false, false,
44 "tgeSTZ", "tgeuSTZ", "tltSTZ", "tltuSTZ", 44 "tgeSTZ", "tgeuSTZ", "tltSTZ", "tltuSTZ",
diff --git a/src/lib_jit.c b/src/lib_jit.c
index c6330c49..1655f0c5 100644
--- a/src/lib_jit.c
+++ b/src/lib_jit.c
@@ -715,15 +715,15 @@ static uint32_t jit_cpudetect(lua_State *L)
715#if LJ_HASJIT 715#if LJ_HASJIT
716 /* Compile-time MIPS CPU detection. */ 716 /* Compile-time MIPS CPU detection. */
717#if LJ_ARCH_VERSION >= 20 717#if LJ_ARCH_VERSION >= 20
718 flags |= JIT_F_MIPS32R2; 718 flags |= JIT_F_MIPSXXR2;
719#endif 719#endif
720 /* Runtime MIPS CPU detection. */ 720 /* Runtime MIPS CPU detection. */
721#if defined(__GNUC__) 721#if defined(__GNUC__)
722 if (!(flags & JIT_F_MIPS32R2)) { 722 if (!(flags & JIT_F_MIPSXXR2)) {
723 int x; 723 int x;
724 /* On MIPS32R1 rotr is treated as srl. rotr r2,r2,1 -> srl r2,r2,1. */ 724 /* On MIPS32R1 rotr is treated as srl. rotr r2,r2,1 -> srl r2,r2,1. */
725 __asm__("li $2, 1\n\t.long 0x00221042\n\tmove %0, $2" : "=r"(x) : : "$2"); 725 __asm__("li $2, 1\n\t.long 0x00221042\n\tmove %0, $2" : "=r"(x) : : "$2");
726 if (x) flags |= JIT_F_MIPS32R2; /* Either 0x80000000 (R2) or 0 (R1). */ 726 if (x) flags |= JIT_F_MIPSXXR2; /* Either 0x80000000 (R2) or 0 (R1). */
727 } 727 }
728#endif 728#endif
729#endif 729#endif
diff --git a/src/lj_arch.h b/src/lj_arch.h
index 3c3c98b1..bbcdc739 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -25,6 +25,10 @@
25#define LUAJIT_ARCH_ppc 5 25#define LUAJIT_ARCH_ppc 5
26#define LUAJIT_ARCH_MIPS 6 26#define LUAJIT_ARCH_MIPS 6
27#define LUAJIT_ARCH_mips 6 27#define LUAJIT_ARCH_mips 6
28#define LUAJIT_ARCH_MIPS32 6
29#define LUAJIT_ARCH_mips32 6
30#define LUAJIT_ARCH_MIPS64 7
31#define LUAJIT_ARCH_mips64 7
28 32
29/* Target OS. */ 33/* Target OS. */
30#define LUAJIT_OS_OTHER 0 34#define LUAJIT_OS_OTHER 0
@@ -47,8 +51,10 @@
47#define LUAJIT_TARGET LUAJIT_ARCH_ARM64 51#define LUAJIT_TARGET LUAJIT_ARCH_ARM64
48#elif defined(__ppc__) || defined(__ppc) || defined(__PPC__) || defined(__PPC) || defined(__powerpc__) || defined(__powerpc) || defined(__POWERPC__) || defined(__POWERPC) || defined(_M_PPC) 52#elif defined(__ppc__) || defined(__ppc) || defined(__PPC__) || defined(__PPC) || defined(__powerpc__) || defined(__powerpc) || defined(__POWERPC__) || defined(__POWERPC) || defined(_M_PPC)
49#define LUAJIT_TARGET LUAJIT_ARCH_PPC 53#define LUAJIT_TARGET LUAJIT_ARCH_PPC
54#elif defined(__mips64__) || defined(__mips64) || defined(__MIPS64__) || defined(__MIPS64)
55#define LUAJIT_TARGET LUAJIT_ARCH_MIPS64
50#elif defined(__mips__) || defined(__mips) || defined(__MIPS__) || defined(__MIPS) 56#elif defined(__mips__) || defined(__mips) || defined(__MIPS__) || defined(__MIPS)
51#define LUAJIT_TARGET LUAJIT_ARCH_MIPS 57#define LUAJIT_TARGET LUAJIT_ARCH_MIPS32
52#else 58#else
53#error "No support for this architecture (yet)" 59#error "No support for this architecture (yet)"
54#endif 60#endif
@@ -289,13 +295,21 @@
289#define LJ_ARCH_XENON 1 295#define LJ_ARCH_XENON 1
290#endif 296#endif
291 297
292#elif LUAJIT_TARGET == LUAJIT_ARCH_MIPS 298#elif LUAJIT_TARGET == LUAJIT_ARCH_MIPS32 || LUAJIT_TARGET == LUAJIT_ARCH_MIPS64
293 299
294#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) 300#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL)
301#if LUAJIT_TARGET == LUAJIT_ARCH_MIPS32
295#define LJ_ARCH_NAME "mipsel" 302#define LJ_ARCH_NAME "mipsel"
303#else
304#define LJ_ARCH_NAME "mips64el"
305#endif
296#define LJ_ARCH_ENDIAN LUAJIT_LE 306#define LJ_ARCH_ENDIAN LUAJIT_LE
297#else 307#else
308#if LUAJIT_TARGET == LUAJIT_ARCH_MIPS32
298#define LJ_ARCH_NAME "mips" 309#define LJ_ARCH_NAME "mips"
310#else
311#define LJ_ARCH_NAME "mips64"
312#endif
299#define LJ_ARCH_ENDIAN LUAJIT_BE 313#define LJ_ARCH_ENDIAN LUAJIT_BE
300#endif 314#endif
301 315
@@ -307,11 +321,6 @@
307#endif 321#endif
308#endif 322#endif
309 323
310/* Temporarily disable features until the code has been merged. */
311#if !defined(LUAJIT_NO_UNWIND) && __GNU_COMPACT_EH__
312#define LUAJIT_NO_UNWIND 1
313#endif
314
315#if !defined(LJ_ABI_SOFTFP) 324#if !defined(LJ_ABI_SOFTFP)
316#ifdef __mips_soft_float 325#ifdef __mips_soft_float
317#define LJ_ABI_SOFTFP 1 326#define LJ_ABI_SOFTFP 1
@@ -320,7 +329,15 @@
320#endif 329#endif
321#endif 330#endif
322 331
332#if LUAJIT_TARGET == LUAJIT_ARCH_MIPS32
323#define LJ_ARCH_BITS 32 333#define LJ_ARCH_BITS 32
334#define LJ_TARGET_MIPS32 1
335#else
336#define LJ_ARCH_BITS 64
337#define LJ_TARGET_MIPS64 1
338#define LJ_TARGET_GC64 1
339#define LJ_ARCH_NOJIT 1 /* NYI */
340#endif
324#define LJ_TARGET_MIPS 1 341#define LJ_TARGET_MIPS 1
325#define LJ_TARGET_EHRETREG 4 342#define LJ_TARGET_EHRETREG 4
326#define LJ_TARGET_JUMPRANGE 27 /* 2*2^27 = 256MB-aligned region */ 343#define LJ_TARGET_JUMPRANGE 27 /* 2*2^27 = 256MB-aligned region */
@@ -329,7 +346,7 @@
329#define LJ_TARGET_UNIFYROT 2 /* Want only IR_BROR. */ 346#define LJ_TARGET_UNIFYROT 2 /* Want only IR_BROR. */
330#define LJ_ARCH_NUMMODE LJ_NUMMODE_DUAL 347#define LJ_ARCH_NUMMODE LJ_NUMMODE_DUAL
331 348
332#if _MIPS_ARCH_MIPS32R2 349#if _MIPS_ARCH_MIPS32R2 || _MIPS_ARCH_MIPS64R2
333#define LJ_ARCH_VERSION 20 350#define LJ_ARCH_VERSION 20
334#else 351#else
335#define LJ_ARCH_VERSION 10 352#define LJ_ARCH_VERSION 10
@@ -410,9 +427,13 @@
410#ifdef __NO_FPRS__ 427#ifdef __NO_FPRS__
411#error "No support for PPC/e500 anymore (use LuaJIT 2.0)" 428#error "No support for PPC/e500 anymore (use LuaJIT 2.0)"
412#endif 429#endif
413#elif LJ_TARGET_MIPS 430#elif LJ_TARGET_MIPS32
414#if defined(_LP64) 431#if _MIPS_SIM != _MIPS_SIM_ABI32
415#error "No support for MIPS64" 432#error "Only o32 ABI supported for MIPS32"
433#endif
434#elif LJ_TARGET_MIPS64
435#if _MIPS_SIM != _MIPS_SIM_ABI64
436#error "Only n64 ABI supported for MIPS64"
416#endif 437#endif
417#endif 438#endif
418#endif 439#endif
@@ -524,6 +545,11 @@
524#define LJ_NO_SYSTEM 1 545#define LJ_NO_SYSTEM 1
525#endif 546#endif
526 547
548#if !defined(LUAJIT_NO_UNWIND) && __GNU_COMPACT_EH__
549/* NYI: no support for compact unwind specification, yet. */
550#define LUAJIT_NO_UNWIND 1
551#endif
552
527#if defined(LUAJIT_NO_UNWIND) || defined(__symbian__) || LJ_TARGET_IOS || LJ_TARGET_PS3 || LJ_TARGET_PS4 553#if defined(LUAJIT_NO_UNWIND) || defined(__symbian__) || LJ_TARGET_IOS || LJ_TARGET_PS3 || LJ_TARGET_PS4
528#define LJ_NO_UNWIND 1 554#define LJ_NO_UNWIND 1
529#endif 555#endif
diff --git a/src/lj_asm_mips.h b/src/lj_asm_mips.h
index 6094be68..cf446346 100644
--- a/src/lj_asm_mips.h
+++ b/src/lj_asm_mips.h
@@ -510,7 +510,7 @@ static void asm_conv(ASMState *as, IRIns *ir)
510 Reg left = ra_alloc1(as, ir->op1, RSET_GPR); 510 Reg left = ra_alloc1(as, ir->op1, RSET_GPR);
511 lua_assert(irt_isint(ir->t) || irt_isu32(ir->t)); 511 lua_assert(irt_isint(ir->t) || irt_isu32(ir->t));
512 if ((ir->op2 & IRCONV_SEXT)) { 512 if ((ir->op2 & IRCONV_SEXT)) {
513 if ((as->flags & JIT_F_MIPS32R2)) { 513 if ((as->flags & JIT_F_MIPSXXR2)) {
514 emit_dst(as, st == IRT_I8 ? MIPSI_SEB : MIPSI_SEH, dest, 0, left); 514 emit_dst(as, st == IRT_I8 ? MIPSI_SEB : MIPSI_SEH, dest, 0, left);
515 } else { 515 } else {
516 uint32_t shift = st == IRT_I8 ? 24 : 16; 516 uint32_t shift = st == IRT_I8 ? 24 : 16;
@@ -739,7 +739,7 @@ static void asm_href(ASMState *as, IRIns *ir, IROp merge)
739 emit_dst(as, MIPSI_SUBU, tmp2, tmp2, dest); 739 emit_dst(as, MIPSI_SUBU, tmp2, tmp2, dest);
740 if (LJ_SOFTFP ? (irkey[1].o == IR_HIOP) : irt_isnum(kt)) { 740 if (LJ_SOFTFP ? (irkey[1].o == IR_HIOP) : irt_isnum(kt)) {
741 emit_dst(as, MIPSI_XOR, tmp2, tmp2, tmp1); 741 emit_dst(as, MIPSI_XOR, tmp2, tmp2, tmp1);
742 if ((as->flags & JIT_F_MIPS32R2)) { 742 if ((as->flags & JIT_F_MIPSXXR2)) {
743 emit_dta(as, MIPSI_ROTR, dest, tmp1, (-HASH_ROT1)&31); 743 emit_dta(as, MIPSI_ROTR, dest, tmp1, (-HASH_ROT1)&31);
744 } else { 744 } else {
745 emit_dst(as, MIPSI_OR, dest, dest, tmp1); 745 emit_dst(as, MIPSI_OR, dest, dest, tmp1);
@@ -1457,7 +1457,7 @@ static void asm_bswap(ASMState *as, IRIns *ir)
1457{ 1457{
1458 Reg dest = ra_dest(as, ir, RSET_GPR); 1458 Reg dest = ra_dest(as, ir, RSET_GPR);
1459 Reg left = ra_alloc1(as, ir->op1, RSET_GPR); 1459 Reg left = ra_alloc1(as, ir->op1, RSET_GPR);
1460 if ((as->flags & JIT_F_MIPS32R2)) { 1460 if ((as->flags & JIT_F_MIPSXXR2)) {
1461 emit_dta(as, MIPSI_ROTR, dest, RID_TMP, 16); 1461 emit_dta(as, MIPSI_ROTR, dest, RID_TMP, 16);
1462 emit_dst(as, MIPSI_WSBH, RID_TMP, 0, left); 1462 emit_dst(as, MIPSI_WSBH, RID_TMP, 0, left);
1463 } else { 1463 } else {
@@ -1513,7 +1513,7 @@ static void asm_bitshift(ASMState *as, IRIns *ir, MIPSIns mi, MIPSIns mik)
1513 1513
1514static void asm_bror(ASMState *as, IRIns *ir) 1514static void asm_bror(ASMState *as, IRIns *ir)
1515{ 1515{
1516 if ((as->flags & JIT_F_MIPS32R2)) { 1516 if ((as->flags & JIT_F_MIPSXXR2)) {
1517 asm_bitshift(as, ir, MIPSI_ROTRV, MIPSI_ROTR); 1517 asm_bitshift(as, ir, MIPSI_ROTRV, MIPSI_ROTR);
1518 } else { 1518 } else {
1519 Reg dest = ra_dest(as, ir, RSET_GPR); 1519 Reg dest = ra_dest(as, ir, RSET_GPR);
diff --git a/src/lj_ccall.c b/src/lj_ccall.c
index eb7c1ee0..b599be33 100644
--- a/src/lj_ccall.c
+++ b/src/lj_ccall.c
@@ -407,8 +407,8 @@
407 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \ 407 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \
408 ctr = ctype_get(cts, CTID_DOUBLE); /* FPRs always hold doubles. */ 408 ctr = ctype_get(cts, CTID_DOUBLE); /* FPRs always hold doubles. */
409 409
410#elif LJ_TARGET_MIPS 410#elif LJ_TARGET_MIPS32
411/* -- MIPS calling conventions -------------------------------------------- */ 411/* -- MIPS o32 calling conventions ---------------------------------------- */
412 412
413#define CCALL_HANDLE_STRUCTRET \ 413#define CCALL_HANDLE_STRUCTRET \
414 cc->retref = 1; /* Return all structs by reference. */ \ 414 cc->retref = 1; /* Return all structs by reference. */ \
@@ -483,6 +483,78 @@
483 sp = (uint8_t *)&cc->fpr[0].f; 483 sp = (uint8_t *)&cc->fpr[0].f;
484#endif 484#endif
485 485
486#elif LJ_TARGET_MIPS64
487/* -- MIPS n64 calling conventions ---------------------------------------- */
488
489#define CCALL_HANDLE_STRUCTRET \
490 cc->retref = !(sz <= 16); \
491 if (cc->retref) cc->gpr[ngpr++] = (GPRArg)dp;
492
493#define CCALL_HANDLE_STRUCTRET2 \
494 ccall_copy_struct(cc, ctr, dp, sp, ccall_classify_struct(cts, ctr, ct));
495
496#define CCALL_HANDLE_COMPLEXRET \
497 /* Complex values are returned in 1 or 2 FPRs. */ \
498 cc->retref = 0;
499
500#if LJ_ABI_SOFTFP /* MIPS64 soft-float */
501
502#define CCALL_HANDLE_COMPLEXRET2 \
503 if (ctr->size == 2*sizeof(float)) { /* Copy complex float from GPRs. */ \
504 ((intptr_t *)dp)[0] = cc->gpr[0]; \
505 } else { /* Copy complex double from GPRs. */ \
506 ((intptr_t *)dp)[0] = cc->gpr[0]; \
507 ((intptr_t *)dp)[1] = cc->gpr[1]; \
508 }
509
510#define CCALL_HANDLE_COMPLEXARG \
511 /* Pass complex by value in 2 or 4 GPRs. */
512
513/* Position of soft-float 'float' return value depends on endianess. */
514#define CCALL_HANDLE_RET \
515 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \
516 sp = (uint8_t *)cc->gpr + LJ_ENDIAN_SELECT(0, 4);
517
518#else /* MIPS64 hard-float */
519
520#define CCALL_HANDLE_COMPLEXRET2 \
521 if (ctr->size == 2*sizeof(float)) { /* Copy complex float from FPRs. */ \
522 ((float *)dp)[0] = cc->fpr[0].f; \
523 ((float *)dp)[1] = cc->fpr[1].f; \
524 } else { /* Copy complex double from FPRs. */ \
525 ((double *)dp)[0] = cc->fpr[0].d; \
526 ((double *)dp)[1] = cc->fpr[1].d; \
527 }
528
529#define CCALL_HANDLE_COMPLEXARG \
530 if (sz == 2*sizeof(float)) { \
531 isfp = 2; \
532 if (ngpr < maxgpr) \
533 sz *= 2; \
534 }
535
536#define CCALL_HANDLE_RET \
537 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \
538 sp = (uint8_t *)&cc->fpr[0].f;
539
540#endif
541
542#define CCALL_HANDLE_STRUCTARG \
543 /* Pass all structs by value in registers and/or on the stack. */
544
545#define CCALL_HANDLE_REGARG \
546 if (ngpr < maxgpr) { \
547 dp = &cc->gpr[ngpr]; \
548 if (ngpr + n > maxgpr) { \
549 nsp += ngpr + n - maxgpr; /* Assumes contiguous gpr/stack fields. */ \
550 if (nsp > CCALL_MAXSTACK) goto err_nyi; /* Too many arguments. */ \
551 ngpr = maxgpr; \
552 } else { \
553 ngpr += n; \
554 } \
555 goto done; \
556 }
557
486#else 558#else
487#error "Missing calling convention definitions for this architecture" 559#error "Missing calling convention definitions for this architecture"
488#endif 560#endif
@@ -722,6 +794,78 @@ noth: /* Not a homogeneous float/double aggregate. */
722 794
723#endif 795#endif
724 796
797/* -- MIPS64 ABI struct classification ---------------------------- */
798
799#if LJ_TARGET_MIPS64
800
801#define FTYPE_FLOAT 1
802#define FTYPE_DOUBLE 2
803
804/* Classify FP fields (max. 2) and their types. */
805static unsigned int ccall_classify_struct(CTState *cts, CType *ct, CType *ctf)
806{
807 int n = 0, ft = 0;
808 if ((ctf->info & CTF_VARARG) || (ct->info & CTF_UNION))
809 goto noth;
810 while (ct->sib) {
811 CType *sct;
812 ct = ctype_get(cts, ct->sib);
813 if (n == 2) {
814 goto noth;
815 } else if (ctype_isfield(ct->info)) {
816 sct = ctype_rawchild(cts, ct);
817 if (ctype_isfp(sct->info)) {
818 ft |= (sct->size == 4 ? FTYPE_FLOAT : FTYPE_DOUBLE) << 2*n;
819 n++;
820 } else {
821 goto noth;
822 }
823 } else if (ctype_isbitfield(ct->info) ||
824 ctype_isxattrib(ct->info, CTA_SUBTYPE)) {
825 goto noth;
826 }
827 }
828 if (n <= 2)
829 return ft;
830noth: /* Not a homogeneous float/double aggregate. */
831 return 0; /* Struct is in GPRs. */
832}
833
834void ccall_copy_struct(CCallState *cc, CType *ctr, void *dp, void *sp, int ft)
835{
836 if (LJ_ABI_SOFTFP ? ft :
837 ((ft & 3) == FTYPE_FLOAT || (ft >> 2) == FTYPE_FLOAT)) {
838 int i, ofs = 0;
839 for (i = 0; ft != 0; i++, ft >>= 2) {
840 if ((ft & 3) == FTYPE_FLOAT) {
841#if LJ_ABI_SOFTFP
842 /* The 2nd FP struct result is in CARG1 (gpr[2]) and not CRET2. */
843 memcpy((uint8_t *)dp + ofs,
844 (uint8_t *)&cc->gpr[2*i] + LJ_ENDIAN_SELECT(0, 4), 4);
845#else
846 *(float *)((uint8_t *)dp + ofs) = cc->fpr[i].f;
847#endif
848 ofs += 4;
849 } else {
850 ofs = (ofs + 7) & ~7; /* 64 bit alignment. */
851#if LJ_ABI_SOFTFP
852 *(intptr_t *)((uint8_t *)dp + ofs) = cc->gpr[2*i];
853#else
854 *(double *)((uint8_t *)dp + ofs) = cc->fpr[i].d;
855#endif
856 ofs += 8;
857 }
858 }
859 } else {
860#if !LJ_ABI_SOFTFP
861 if (ft) sp = (uint8_t *)&cc->fpr[0];
862#endif
863 memcpy(dp, sp, ctr->size);
864 }
865}
866
867#endif
868
725/* -- Common C call handling ---------------------------------------------- */ 869/* -- Common C call handling ---------------------------------------------- */
726 870
727/* Infer the destination CTypeID for a vararg argument. */ 871/* Infer the destination CTypeID for a vararg argument. */
@@ -889,6 +1033,12 @@ static int ccall_set_args(lua_State *L, CTState *cts, CType *ct,
889 *(int32_t *)dp = d->size == 1 ? (int32_t)*(int8_t *)dp : 1033 *(int32_t *)dp = d->size == 1 ? (int32_t)*(int8_t *)dp :
890 (int32_t)*(int16_t *)dp; 1034 (int32_t)*(int16_t *)dp;
891 } 1035 }
1036#if LJ_TARGET_MIPS64
1037 if ((ctype_isinteger_or_bool(d->info) || ctype_isenum(d->info) ||
1038 (isfp && nsp == 0)) && d->size <= 4) {
1039 *(int64_t *)dp = (int64_t)*(int32_t *)dp; /* Sign-extend to 64 bit. */
1040 }
1041#endif
892#if LJ_TARGET_X64 && LJ_ABI_WIN 1042#if LJ_TARGET_X64 && LJ_ABI_WIN
893 if (isva) { /* Windows/x64 mirrors varargs in both register sets. */ 1043 if (isva) { /* Windows/x64 mirrors varargs in both register sets. */
894 if (nfpr == ngpr) 1044 if (nfpr == ngpr)
@@ -904,7 +1054,7 @@ static int ccall_set_args(lua_State *L, CTState *cts, CType *ct,
904 cc->fpr[nfpr-1].d[0] = cc->fpr[nfpr-2].d[1]; /* Split complex double. */ 1054 cc->fpr[nfpr-1].d[0] = cc->fpr[nfpr-2].d[1]; /* Split complex double. */
905 cc->fpr[nfpr-2].d[1] = 0; 1055 cc->fpr[nfpr-2].d[1] = 0;
906 } 1056 }
907#elif LJ_TARGET_ARM64 1057#elif LJ_TARGET_ARM64 || (LJ_TARGET_MIPS64 && !LJ_ABI_SOFTFP)
908 if (isfp == 2 && (uint8_t *)dp < (uint8_t *)cc->stack) { 1058 if (isfp == 2 && (uint8_t *)dp < (uint8_t *)cc->stack) {
909 /* Split float HFA or complex float into separate registers. */ 1059 /* Split float HFA or complex float into separate registers. */
910 CTSize i = (sz >> 2) - 1; 1060 CTSize i = (sz >> 2) - 1;
@@ -951,7 +1101,8 @@ static int ccall_get_results(lua_State *L, CTState *cts, CType *ct,
951 CCALL_HANDLE_COMPLEXRET2 1101 CCALL_HANDLE_COMPLEXRET2
952 return 1; /* One GC step. */ 1102 return 1; /* One GC step. */
953 } 1103 }
954 if (LJ_BE && ctype_isinteger_or_bool(ctr->info) && ctr->size < CTSIZE_PTR) 1104 if (LJ_BE && ctr->size < CTSIZE_PTR &&
1105 (ctype_isinteger_or_bool(ctr->info) || ctype_isenum(ctr->info)))
955 sp += (CTSIZE_PTR - ctr->size); 1106 sp += (CTSIZE_PTR - ctr->size);
956#if CCALL_NUM_FPR 1107#if CCALL_NUM_FPR
957 if (ctype_isfp(ctr->info) || ctype_isvector(ctr->info)) 1108 if (ctype_isfp(ctr->info) || ctype_isvector(ctr->info))
diff --git a/src/lj_ccall.h b/src/lj_ccall.h
index a77afae3..d97227a6 100644
--- a/src/lj_ccall.h
+++ b/src/lj_ccall.h
@@ -95,11 +95,11 @@ typedef union FPRArg {
95typedef intptr_t GPRArg; 95typedef intptr_t GPRArg;
96typedef double FPRArg; 96typedef double FPRArg;
97 97
98#elif LJ_TARGET_MIPS 98#elif LJ_TARGET_MIPS32
99 99
100#define CCALL_NARG_GPR 4 100#define CCALL_NARG_GPR 4
101#define CCALL_NARG_FPR (LJ_ABI_SOFTFP ? 0 : 2) 101#define CCALL_NARG_FPR (LJ_ABI_SOFTFP ? 0 : 2)
102#define CCALL_NRET_GPR 2 102#define CCALL_NRET_GPR (LJ_ABI_SOFTFP ? 4 : 2)
103#define CCALL_NRET_FPR (LJ_ABI_SOFTFP ? 0 : 2) 103#define CCALL_NRET_FPR (LJ_ABI_SOFTFP ? 0 : 2)
104#define CCALL_SPS_EXTRA 7 104#define CCALL_SPS_EXTRA 7
105#define CCALL_SPS_FREE 1 105#define CCALL_SPS_FREE 1
@@ -110,6 +110,22 @@ typedef union FPRArg {
110 struct { LJ_ENDIAN_LOHI(float f; , float g;) }; 110 struct { LJ_ENDIAN_LOHI(float f; , float g;) };
111} FPRArg; 111} FPRArg;
112 112
113#elif LJ_TARGET_MIPS64
114
115/* FP args are positional and overlay the GPR array. */
116#define CCALL_NARG_GPR 8
117#define CCALL_NARG_FPR 0
118#define CCALL_NRET_GPR 2
119#define CCALL_NRET_FPR (LJ_ABI_SOFTFP ? 0 : 2)
120#define CCALL_SPS_EXTRA 3
121#define CCALL_SPS_FREE 1
122
123typedef intptr_t GPRArg;
124typedef union FPRArg {
125 double d;
126 struct { LJ_ENDIAN_LOHI(float f; , float g;) };
127} FPRArg;
128
113#else 129#else
114#error "Missing calling convention definitions for this architecture" 130#error "Missing calling convention definitions for this architecture"
115#endif 131#endif
diff --git a/src/lj_ccallback.c b/src/lj_ccallback.c
index 43c29e41..2ca6406c 100644
--- a/src/lj_ccallback.c
+++ b/src/lj_ccallback.c
@@ -63,9 +63,13 @@ static MSize CALLBACK_OFS2SLOT(MSize ofs)
63 63
64#define CALLBACK_MCODE_HEAD 24 64#define CALLBACK_MCODE_HEAD 24
65 65
66#elif LJ_TARGET_MIPS 66#elif LJ_TARGET_MIPS32
67 67
68#define CALLBACK_MCODE_HEAD 24 68#define CALLBACK_MCODE_HEAD 20
69
70#elif LJ_TARGET_MIPS64
71
72#define CALLBACK_MCODE_HEAD 52
69 73
70#else 74#else
71 75
@@ -206,14 +210,27 @@ static void callback_mcode_init(global_State *g, uint32_t *page)
206static void callback_mcode_init(global_State *g, uint32_t *page) 210static void callback_mcode_init(global_State *g, uint32_t *page)
207{ 211{
208 uint32_t *p = page; 212 uint32_t *p = page;
209 void *target = (void *)lj_vm_ffi_callback; 213 uintptr_t target = (uintptr_t)(void *)lj_vm_ffi_callback;
214 uintptr_t ug = (uintptr_t)(void *)g;
210 MSize slot; 215 MSize slot;
211 *p++ = MIPSI_SW | MIPSF_T(RID_R1)|MIPSF_S(RID_SP) | 0; 216#if LJ_TARGET_MIPS32
212 *p++ = MIPSI_LUI | MIPSF_T(RID_R3) | (u32ptr(target) >> 16); 217 *p++ = MIPSI_LUI | MIPSF_T(RID_R3) | (target >> 16);
213 *p++ = MIPSI_LUI | MIPSF_T(RID_R2) | (u32ptr(g) >> 16); 218 *p++ = MIPSI_LUI | MIPSF_T(RID_R2) | (ug >> 16);
214 *p++ = MIPSI_ORI | MIPSF_T(RID_R3)|MIPSF_S(RID_R3) |(u32ptr(target)&0xffff); 219#else
220 *p++ = MIPSI_LUI | MIPSF_T(RID_R3) | (target >> 48);
221 *p++ = MIPSI_LUI | MIPSF_T(RID_R2) | (ug >> 48);
222 *p++ = MIPSI_ORI | MIPSF_T(RID_R3)|MIPSF_S(RID_R3) | ((target >> 32) & 0xffff);
223 *p++ = MIPSI_ORI | MIPSF_T(RID_R2)|MIPSF_S(RID_R2) | ((ug >> 32) & 0xffff);
224 *p++ = MIPSI_DSLL | MIPSF_D(RID_R3)|MIPSF_T(RID_R3) | MIPSF_A(16);
225 *p++ = MIPSI_DSLL | MIPSF_D(RID_R2)|MIPSF_T(RID_R2) | MIPSF_A(16);
226 *p++ = MIPSI_ORI | MIPSF_T(RID_R3)|MIPSF_S(RID_R3) | ((target >> 16) & 0xffff);
227 *p++ = MIPSI_ORI | MIPSF_T(RID_R2)|MIPSF_S(RID_R2) | ((ug >> 16) & 0xffff);
228 *p++ = MIPSI_DSLL | MIPSF_D(RID_R3)|MIPSF_T(RID_R3) | MIPSF_A(16);
229 *p++ = MIPSI_DSLL | MIPSF_D(RID_R2)|MIPSF_T(RID_R2) | MIPSF_A(16);
230#endif
231 *p++ = MIPSI_ORI | MIPSF_T(RID_R3)|MIPSF_S(RID_R3) | (target & 0xffff);
215 *p++ = MIPSI_JR | MIPSF_S(RID_R3); 232 *p++ = MIPSI_JR | MIPSF_S(RID_R3);
216 *p++ = MIPSI_ORI | MIPSF_T(RID_R2)|MIPSF_S(RID_R2) | (u32ptr(g)&0xffff); 233 *p++ = MIPSI_ORI | MIPSF_T(RID_R2)|MIPSF_S(RID_R2) | (ug & 0xffff);
217 for (slot = 0; slot < CALLBACK_MAX_SLOT; slot++) { 234 for (slot = 0; slot < CALLBACK_MAX_SLOT; slot++) {
218 *p = MIPSI_B | ((page-p-1) & 0x0000ffffu); 235 *p = MIPSI_B | ((page-p-1) & 0x0000ffffu);
219 p++; 236 p++;
@@ -425,7 +442,7 @@ void lj_ccallback_mcode_free(CTState *cts)
425 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \ 442 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \
426 *(double *)dp = *(float *)dp; /* FPRs always hold doubles. */ 443 *(double *)dp = *(float *)dp; /* FPRs always hold doubles. */
427 444
428#elif LJ_TARGET_MIPS 445#elif LJ_TARGET_MIPS32
429 446
430#define CALLBACK_HANDLE_GPR \ 447#define CALLBACK_HANDLE_GPR \
431 if (n > 1) ngpr = (ngpr + 1u) & ~1u; /* Align to regpair. */ \ 448 if (n > 1) ngpr = (ngpr + 1u) & ~1u; /* Align to regpair. */ \
@@ -455,6 +472,29 @@ void lj_ccallback_mcode_free(CTState *cts)
455 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \ 472 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \
456 ((float *)dp)[1] = *(float *)dp; 473 ((float *)dp)[1] = *(float *)dp;
457 474
475#elif LJ_TARGET_MIPS64
476
477#if !LJ_ABI_SOFTFP /* MIPS64 hard-float */
478#define CALLBACK_HANDLE_REGARG \
479 if (ngpr + n <= maxgpr) { \
480 sp = isfp ? (void*) &cts->cb.fpr[ngpr] : (void*) &cts->cb.gpr[ngpr]; \
481 ngpr += n; \
482 goto done; \
483 }
484#else /* MIPS64 soft-float */
485#define CALLBACK_HANDLE_REGARG \
486 if (ngpr + n <= maxgpr) { \
487 UNUSED(isfp); \
488 sp = (void*) &cts->cb.gpr[ngpr]; \
489 ngpr += n; \
490 goto done; \
491 }
492#endif
493
494#define CALLBACK_HANDLE_RET \
495 if (ctype_isfp(ctr->info) && ctr->size == sizeof(float)) \
496 ((float *)dp)[1] = *(float *)dp;
497
458#else 498#else
459#error "Missing calling convention definitions for this architecture" 499#error "Missing calling convention definitions for this architecture"
460#endif 500#endif
@@ -542,7 +582,11 @@ static void callback_conv_args(CTState *cts, lua_State *L)
542 nsp += n; 582 nsp += n;
543 583
544 done: 584 done:
545 if (LJ_BE && cta->size < CTSIZE_PTR) 585 if (LJ_BE && cta->size < CTSIZE_PTR
586#if LJ_TARGET_MIPS64
587 && !(isfp && nsp)
588#endif
589 )
546 sp = (void *)((uint8_t *)sp + CTSIZE_PTR-cta->size); 590 sp = (void *)((uint8_t *)sp + CTSIZE_PTR-cta->size);
547 gcsteps += lj_cconv_tv_ct(cts, cta, 0, o++, sp); 591 gcsteps += lj_cconv_tv_ct(cts, cta, 0, o++, sp);
548 } 592 }
@@ -593,6 +637,12 @@ static void callback_conv_result(CTState *cts, lua_State *L, TValue *o)
593 *(int32_t *)dp = ctr->size == 1 ? (int32_t)*(int8_t *)dp : 637 *(int32_t *)dp = ctr->size == 1 ? (int32_t)*(int8_t *)dp :
594 (int32_t)*(int16_t *)dp; 638 (int32_t)*(int16_t *)dp;
595 } 639 }
640#if LJ_TARGET_MIPS64
641 /* Always sign-extend results to 64 bits. Even a soft-fp 'float'. */
642 if (ctr->size <= 4 &&
643 (LJ_ABI_SOFTFP || ctype_isinteger_or_bool(ctr->info)))
644 *(int64_t *)dp = (int64_t)*(int32_t *)dp;
645#endif
596#if LJ_TARGET_X86 646#if LJ_TARGET_X86
597 if (ctype_isfp(ctr->info)) 647 if (ctype_isfp(ctr->info))
598 cts->cb.gpr[2] = ctr->size == sizeof(float) ? 1 : 2; 648 cts->cb.gpr[2] = ctr->size == sizeof(float) ? 1 : 2;
diff --git a/src/lj_dispatch.c b/src/lj_dispatch.c
index 36b920ad..e5aa495d 100644
--- a/src/lj_dispatch.c
+++ b/src/lj_dispatch.c
@@ -75,7 +75,7 @@ void lj_dispatch_init(GG_State *GG)
75 for (i = 0; i < GG_NUM_ASMFF; i++) 75 for (i = 0; i < GG_NUM_ASMFF; i++)
76 GG->bcff[i] = BCINS_AD(BC__MAX+i, 0, 0); 76 GG->bcff[i] = BCINS_AD(BC__MAX+i, 0, 0);
77#if LJ_TARGET_MIPS 77#if LJ_TARGET_MIPS
78 memcpy(GG->got, dispatch_got, LJ_GOT__MAX*4); 78 memcpy(GG->got, dispatch_got, LJ_GOT__MAX*sizeof(ASMFunction *));
79#endif 79#endif
80} 80}
81 81
diff --git a/src/lj_emit_mips.h b/src/lj_emit_mips.h
index 29079ea3..9df04771 100644
--- a/src/lj_emit_mips.h
+++ b/src/lj_emit_mips.h
@@ -35,7 +35,7 @@ static void emit_fgh(ASMState *as, MIPSIns mi, Reg rf, Reg rg, Reg rh)
35 35
36static void emit_rotr(ASMState *as, Reg dest, Reg src, Reg tmp, uint32_t shift) 36static void emit_rotr(ASMState *as, Reg dest, Reg src, Reg tmp, uint32_t shift)
37{ 37{
38 if ((as->flags & JIT_F_MIPS32R2)) { 38 if ((as->flags & JIT_F_MIPSXXR2)) {
39 emit_dta(as, MIPSI_ROTR, dest, src, shift); 39 emit_dta(as, MIPSI_ROTR, dest, src, shift);
40 } else { 40 } else {
41 emit_dst(as, MIPSI_OR, dest, dest, tmp); 41 emit_dst(as, MIPSI_OR, dest, dest, tmp);
diff --git a/src/lj_frame.h b/src/lj_frame.h
index db2e4da1..d8d8cff2 100644
--- a/src/lj_frame.h
+++ b/src/lj_frame.h
@@ -229,26 +229,41 @@ enum { LJ_CONT_TAILCALL, LJ_CONT_FFI_CALLBACK }; /* Special continuations. */
229#define CFRAME_SIZE 272 229#define CFRAME_SIZE 272
230#define CFRAME_SHIFT_MULTRES 3 230#define CFRAME_SHIFT_MULTRES 3
231#endif 231#endif
232#elif LJ_TARGET_MIPS 232#elif LJ_TARGET_MIPS32
233#if LJ_ARCH_HASFPU 233#if LJ_ARCH_HASFPU
234#define CFRAME_OFS_ERRF 124 234#define CFRAME_OFS_ERRF 124
235#define CFRAME_OFS_NRES 120 235#define CFRAME_OFS_NRES 120
236#define CFRAME_OFS_PREV 116 236#define CFRAME_OFS_PREV 116
237#define CFRAME_OFS_L 112 237#define CFRAME_OFS_L 112
238#define CFRAME_OFS_PC 20
239#define CFRAME_OFS_MULTRES 16
240#define CFRAME_SIZE 112 238#define CFRAME_SIZE 112
241#define CFRAME_SHIFT_MULTRES 3
242#else 239#else
243#define CFRAME_OFS_ERRF 76 240#define CFRAME_OFS_ERRF 76
244#define CFRAME_OFS_NRES 72 241#define CFRAME_OFS_NRES 72
245#define CFRAME_OFS_PREV 68 242#define CFRAME_OFS_PREV 68
246#define CFRAME_OFS_L 64 243#define CFRAME_OFS_L 64
244#define CFRAME_SIZE 64
245#endif
247#define CFRAME_OFS_PC 20 246#define CFRAME_OFS_PC 20
248#define CFRAME_OFS_MULTRES 16 247#define CFRAME_OFS_MULTRES 16
249#define CFRAME_SIZE 64
250#define CFRAME_SHIFT_MULTRES 3 248#define CFRAME_SHIFT_MULTRES 3
249#elif LJ_TARGET_MIPS64
250#if LJ_ARCH_HASFPU
251#define CFRAME_OFS_ERRF 188
252#define CFRAME_OFS_NRES 184
253#define CFRAME_OFS_PREV 176
254#define CFRAME_OFS_L 168
255#define CFRAME_OFS_PC 160
256#define CFRAME_SIZE 192
257#else
258#define CFRAME_OFS_ERRF 124
259#define CFRAME_OFS_NRES 120
260#define CFRAME_OFS_PREV 112
261#define CFRAME_OFS_L 104
262#define CFRAME_OFS_PC 96
263#define CFRAME_SIZE 128
251#endif 264#endif
265#define CFRAME_OFS_MULTRES 0
266#define CFRAME_SHIFT_MULTRES 3
252#else 267#else
253#error "Missing CFRAME_* definitions for this architecture" 268#error "Missing CFRAME_* definitions for this architecture"
254#endif 269#endif
diff --git a/src/lj_ircall.h b/src/lj_ircall.h
index f2a6ecec..c7cd4257 100644
--- a/src/lj_ircall.h
+++ b/src/lj_ircall.h
@@ -78,13 +78,13 @@ typedef struct CCallInfo {
78#define IRCALLCOND_SOFTFP_FFI(x) NULL 78#define IRCALLCOND_SOFTFP_FFI(x) NULL
79#endif 79#endif
80 80
81#if LJ_SOFTFP && LJ_TARGET_MIPS 81#if LJ_SOFTFP && LJ_TARGET_MIPS32
82#define IRCALLCOND_SOFTFP_MIPS(x) x 82#define IRCALLCOND_SOFTFP_MIPS(x) x
83#else 83#else
84#define IRCALLCOND_SOFTFP_MIPS(x) NULL 84#define IRCALLCOND_SOFTFP_MIPS(x) NULL
85#endif 85#endif
86 86
87#define LJ_NEED_FP64 (LJ_TARGET_ARM || LJ_TARGET_PPC || LJ_TARGET_MIPS) 87#define LJ_NEED_FP64 (LJ_TARGET_ARM || LJ_TARGET_PPC || LJ_TARGET_MIPS32)
88 88
89#if LJ_HASFFI && (LJ_SOFTFP || LJ_NEED_FP64) 89#if LJ_HASFFI && (LJ_SOFTFP || LJ_NEED_FP64)
90#define IRCALLCOND_FP64_FFI(x) x 90#define IRCALLCOND_FP64_FFI(x) x
diff --git a/src/lj_jit.h b/src/lj_jit.h
index f460a0ab..3505c63f 100644
--- a/src/lj_jit.h
+++ b/src/lj_jit.h
@@ -46,12 +46,16 @@
46#define JIT_F_CPU_FIRST JIT_F_SQRT 46#define JIT_F_CPU_FIRST JIT_F_SQRT
47#define JIT_F_CPUSTRING "\4SQRT\5ROUND" 47#define JIT_F_CPUSTRING "\4SQRT\5ROUND"
48#elif LJ_TARGET_MIPS 48#elif LJ_TARGET_MIPS
49#define JIT_F_MIPS32R2 0x00000010 49#define JIT_F_MIPSXXR2 0x00000010
50 50
51/* Names for the CPU-specific flags. Must match the order above. */ 51/* Names for the CPU-specific flags. Must match the order above. */
52#define JIT_F_CPU_FIRST JIT_F_MIPS32R2 52#define JIT_F_CPU_FIRST JIT_F_MIPSXXR2
53#if LJ_TARGET_MIPS32
53#define JIT_F_CPUSTRING "\010MIPS32R2" 54#define JIT_F_CPUSTRING "\010MIPS32R2"
54#else 55#else
56#define JIT_F_CPUSTRING "\010MIPS64R2"
57#endif
58#else
55#define JIT_F_CPU_FIRST 0 59#define JIT_F_CPU_FIRST 0
56#define JIT_F_CPUSTRING "" 60#define JIT_F_CPUSTRING ""
57#endif 61#endif
diff --git a/src/lj_target_mips.h b/src/lj_target_mips.h
index bafa817a..ac72528d 100644
--- a/src/lj_target_mips.h
+++ b/src/lj_target_mips.h
@@ -82,11 +82,15 @@ enum {
82#if LJ_SOFTFP 82#if LJ_SOFTFP
83#define RSET_FPR 0 83#define RSET_FPR 0
84#else 84#else
85#if LJ_32
85#define RSET_FPR \ 86#define RSET_FPR \
86 (RID2RSET(RID_F0)|RID2RSET(RID_F2)|RID2RSET(RID_F4)|RID2RSET(RID_F6)|\ 87 (RID2RSET(RID_F0)|RID2RSET(RID_F2)|RID2RSET(RID_F4)|RID2RSET(RID_F6)|\
87 RID2RSET(RID_F8)|RID2RSET(RID_F10)|RID2RSET(RID_F12)|RID2RSET(RID_F14)|\ 88 RID2RSET(RID_F8)|RID2RSET(RID_F10)|RID2RSET(RID_F12)|RID2RSET(RID_F14)|\
88 RID2RSET(RID_F16)|RID2RSET(RID_F18)|RID2RSET(RID_F20)|RID2RSET(RID_F22)|\ 89 RID2RSET(RID_F16)|RID2RSET(RID_F18)|RID2RSET(RID_F20)|RID2RSET(RID_F22)|\
89 RID2RSET(RID_F24)|RID2RSET(RID_F26)|RID2RSET(RID_F28)|RID2RSET(RID_F30)) 90 RID2RSET(RID_F24)|RID2RSET(RID_F26)|RID2RSET(RID_F28)|RID2RSET(RID_F30))
91#else
92#define RSET_FPR RSET_RANGE(RID_MIN_FPR, RID_MAX_FPR)
93#endif
90#endif 94#endif
91#define RSET_ALL (RSET_GPR|RSET_FPR) 95#define RSET_ALL (RSET_GPR|RSET_FPR)
92#define RSET_INIT RSET_ALL 96#define RSET_INIT RSET_ALL
@@ -97,23 +101,37 @@ enum {
97#if LJ_SOFTFP 101#if LJ_SOFTFP
98#define RSET_SCRATCH_FPR 0 102#define RSET_SCRATCH_FPR 0
99#else 103#else
104#if LJ_32
100#define RSET_SCRATCH_FPR \ 105#define RSET_SCRATCH_FPR \
101 (RID2RSET(RID_F0)|RID2RSET(RID_F2)|RID2RSET(RID_F4)|RID2RSET(RID_F6)|\ 106 (RID2RSET(RID_F0)|RID2RSET(RID_F2)|RID2RSET(RID_F4)|RID2RSET(RID_F6)|\
102 RID2RSET(RID_F8)|RID2RSET(RID_F10)|RID2RSET(RID_F12)|RID2RSET(RID_F14)|\ 107 RID2RSET(RID_F8)|RID2RSET(RID_F10)|RID2RSET(RID_F12)|RID2RSET(RID_F14)|\
103 RID2RSET(RID_F16)|RID2RSET(RID_F18)) 108 RID2RSET(RID_F16)|RID2RSET(RID_F18))
109#else
110#define RSET_SCRATCH_FPR RSET_RANGE(RID_F0, RID_F24)
111#endif
104#endif 112#endif
105#define RSET_SCRATCH (RSET_SCRATCH_GPR|RSET_SCRATCH_FPR) 113#define RSET_SCRATCH (RSET_SCRATCH_GPR|RSET_SCRATCH_FPR)
106#define REGARG_FIRSTGPR RID_R4 114#define REGARG_FIRSTGPR RID_R4
115#if LJ_32
107#define REGARG_LASTGPR RID_R7 116#define REGARG_LASTGPR RID_R7
108#define REGARG_NUMGPR 4 117#define REGARG_NUMGPR 4
118#else
119#define REGARG_LASTGPR RID_R11
120#define REGARG_NUMGPR 8
121#endif
109#if LJ_ABI_SOFTFP 122#if LJ_ABI_SOFTFP
110#define REGARG_FIRSTFPR 0 123#define REGARG_FIRSTFPR 0
111#define REGARG_LASTFPR 0 124#define REGARG_LASTFPR 0
112#define REGARG_NUMFPR 0 125#define REGARG_NUMFPR 0
113#else 126#else
114#define REGARG_FIRSTFPR RID_F12 127#define REGARG_FIRSTFPR RID_F12
128#if LJ_32
115#define REGARG_LASTFPR RID_F14 129#define REGARG_LASTFPR RID_F14
116#define REGARG_NUMFPR 2 130#define REGARG_NUMFPR 2
131#else
132#define REGARG_LASTFPR RID_F19
133#define REGARG_NUMFPR 8
134#endif
117#endif 135#endif
118 136
119/* -- Spill slots --------------------------------------------------------- */ 137/* -- Spill slots --------------------------------------------------------- */
@@ -125,7 +143,11 @@ enum {
125** 143**
126** SPS_FIRST: First spill slot for general use. 144** SPS_FIRST: First spill slot for general use.
127*/ 145*/
146#if LJ_32
128#define SPS_FIXED 5 147#define SPS_FIXED 5
148#else
149#define SPS_FIXED 4
150#endif
129#define SPS_FIRST 4 151#define SPS_FIRST 4
130 152
131#define SPOFS_TMP 0 153#define SPOFS_TMP 0
@@ -140,7 +162,7 @@ typedef struct {
140#if !LJ_SOFTFP 162#if !LJ_SOFTFP
141 lua_Number fpr[RID_NUM_FPR]; /* Floating-point registers. */ 163 lua_Number fpr[RID_NUM_FPR]; /* Floating-point registers. */
142#endif 164#endif
143 int32_t gpr[RID_NUM_GPR]; /* General-purpose registers. */ 165 intptr_t gpr[RID_NUM_GPR]; /* General-purpose registers. */
144 int32_t spill[256]; /* Spill slots. */ 166 int32_t spill[256]; /* Spill slots. */
145} ExitState; 167} ExitState;
146 168
@@ -172,7 +194,7 @@ static LJ_AINLINE uint32_t *exitstub_trace_addr_(uint32_t *p)
172 194
173typedef enum MIPSIns { 195typedef enum MIPSIns {
174 /* Integer instructions. */ 196 /* Integer instructions. */
175 MIPSI_MOVE = 0x00000021, 197 MIPSI_MOVE = 0x00000025,
176 MIPSI_NOP = 0x00000000, 198 MIPSI_NOP = 0x00000000,
177 199
178 MIPSI_LI = 0x24000000, 200 MIPSI_LI = 0x24000000,
@@ -204,15 +226,15 @@ typedef enum MIPSIns {
204 MIPSI_SLL = 0x00000000, 226 MIPSI_SLL = 0x00000000,
205 MIPSI_SRL = 0x00000002, 227 MIPSI_SRL = 0x00000002,
206 MIPSI_SRA = 0x00000003, 228 MIPSI_SRA = 0x00000003,
207 MIPSI_ROTR = 0x00200002, /* MIPS32R2 */ 229 MIPSI_ROTR = 0x00200002, /* MIPSXXR2 */
208 MIPSI_SLLV = 0x00000004, 230 MIPSI_SLLV = 0x00000004,
209 MIPSI_SRLV = 0x00000006, 231 MIPSI_SRLV = 0x00000006,
210 MIPSI_SRAV = 0x00000007, 232 MIPSI_SRAV = 0x00000007,
211 MIPSI_ROTRV = 0x00000046, /* MIPS32R2 */ 233 MIPSI_ROTRV = 0x00000046, /* MIPSXXR2 */
212 234
213 MIPSI_SEB = 0x7c000420, /* MIPS32R2 */ 235 MIPSI_SEB = 0x7c000420, /* MIPSXXR2 */
214 MIPSI_SEH = 0x7c000620, /* MIPS32R2 */ 236 MIPSI_SEH = 0x7c000620, /* MIPSXXR2 */
215 MIPSI_WSBH = 0x7c0000a0, /* MIPS32R2 */ 237 MIPSI_WSBH = 0x7c0000a0, /* MIPSXXR2 */
216 238
217 MIPSI_B = 0x10000000, 239 MIPSI_B = 0x10000000,
218 MIPSI_J = 0x08000000, 240 MIPSI_J = 0x08000000,
@@ -241,6 +263,15 @@ typedef enum MIPSIns {
241 MIPSI_LDC1 = 0xd4000000, 263 MIPSI_LDC1 = 0xd4000000,
242 MIPSI_SDC1 = 0xf4000000, 264 MIPSI_SDC1 = 0xf4000000,
243 265
266 /* MIPS64 instructions. */
267 MIPSI_DSLL = 0x00000038,
268 MIPSI_LD = 0xdc000000,
269 MIPSI_DADDIU = 0x64000000,
270 MIPSI_SD = 0xfc000000,
271 MIPSI_DMFC1 = 0x44200000,
272 MIPSI_DSRA32 = 0x0000003f,
273 MIPSI_MFHC1 = 0x44600000,
274
244 /* FP instructions. */ 275 /* FP instructions. */
245 MIPSI_MOV_S = 0x46000006, 276 MIPSI_MOV_S = 0x46000006,
246 MIPSI_MOV_D = 0x46200006, 277 MIPSI_MOV_D = 0x46200006,
diff --git a/src/vm_mips.dasc b/src/vm_mips.dasc
index 0543c7e0..6f5a83dd 100644
--- a/src/vm_mips.dasc
+++ b/src/vm_mips.dasc
@@ -57,7 +57,7 @@
57|.define TMP2, r14 57|.define TMP2, r14
58|.define TMP3, r15 58|.define TMP3, r15
59| 59|
60|// Calling conventions. 60|// MIPS o32 calling convention.
61|.define CFUNCADDR, r25 61|.define CFUNCADDR, r25
62|.define CARG1, r4 62|.define CARG1, r4
63|.define CARG2, r5 63|.define CARG2, r5
diff --git a/src/vm_mips64.dasc b/src/vm_mips64.dasc
new file mode 100644
index 00000000..52b56de4
--- /dev/null
+++ b/src/vm_mips64.dasc
@@ -0,0 +1,4849 @@
1|// Low-level VM code for MIPS64 CPUs.
2|// Bytecode interpreter, fast functions and helper functions.
3|// Copyright (C) 2005-2016 Mike Pall. See Copyright Notice in luajit.h
4|//
5|// Contributed by Djordje Kovacevic and Stefan Pejic from RT-RK.com.
6|// Sponsored by Cisco Systems, Inc.
7|
8|.arch mips64
9|.section code_op, code_sub
10|
11|.actionlist build_actionlist
12|.globals GLOB_
13|.globalnames globnames
14|.externnames extnames
15|
16|// Note: The ragged indentation of the instructions is intentional.
17|// The starting columns indicate data dependencies.
18|
19|//-----------------------------------------------------------------------
20|
21|// Fixed register assignments for the interpreter.
22|// Don't use: r0 = 0, r26/r27 = reserved, r28 = gp, r29 = sp, r31 = ra
23|
24|.macro .FPU, a, b
25|.if FPU
26| a, b
27|.endif
28|.endmacro
29|
30|// The following must be C callee-save (but BASE is often refetched).
31|.define BASE, r16 // Base of current Lua stack frame.
32|.define KBASE, r17 // Constants of current Lua function.
33|.define PC, r18 // Next PC.
34|.define DISPATCH, r19 // Opcode dispatch table.
35|.define LREG, r20 // Register holding lua_State (also in SAVE_L).
36|.define MULTRES, r21 // Size of multi-result: (nresults+1)*8.
37|
38|.define JGL, r30 // On-trace: global_State + 32768.
39|
40|// Constants for type-comparisons, stores and conversions. C callee-save.
41|.define TISNIL, r30
42|.define TISNUM, r22
43|.if FPU
44|.define TOBIT, f30 // 2^52 + 2^51.
45|.endif
46|
47|// The following temporaries are not saved across C calls, except for RA.
48|.define RA, r23 // Callee-save.
49|.define RB, r8
50|.define RC, r9
51|.define RD, r10
52|.define INS, r11
53|
54|.define AT, r1 // Assembler temporary.
55|.define TMP0, r12
56|.define TMP1, r13
57|.define TMP2, r14
58|.define TMP3, r15
59|
60|// MIPS n64 calling convention.
61|.define CFUNCADDR, r25
62|.define CARG1, r4
63|.define CARG2, r5
64|.define CARG3, r6
65|.define CARG4, r7
66|.define CARG5, r8
67|.define CARG6, r9
68|.define CARG7, r10
69|.define CARG8, r11
70|
71|.define CRET1, r2
72|.define CRET2, r3
73|
74|.if FPU
75|.define FARG1, f12
76|.define FARG2, f13
77|.define FARG3, f14
78|.define FARG4, f15
79|.define FARG5, f16
80|.define FARG6, f17
81|.define FARG7, f18
82|.define FARG8, f19
83|
84|.define FRET1, f0
85|.define FRET2, f2
86|.endif
87|
88|// Stack layout while in interpreter. Must match with lj_frame.h.
89|.if FPU // MIPS64 hard-float.
90|
91|.define CFRAME_SPACE, 192 // Delta for sp.
92|
93|//----- 16 byte aligned, <-- sp entering interpreter
94|.define SAVE_ERRF, 188(sp) // 32 bit values.
95|.define SAVE_NRES, 184(sp)
96|.define SAVE_CFRAME, 176(sp) // 64 bit values.
97|.define SAVE_L, 168(sp)
98|.define SAVE_PC, 160(sp)
99|//----- 16 byte aligned
100|.define SAVE_GPR_, 80 // .. 80+10*8: 64 bit GPR saves.
101|.define SAVE_FPR_, 16 // .. 16+8*8: 64 bit FPR saves.
102|
103|.else // MIPS64 soft-float
104|
105|.define CFRAME_SPACE, 128 // Delta for sp.
106|
107|//----- 16 byte aligned, <-- sp entering interpreter
108|.define SAVE_ERRF, 124(sp) // 32 bit values.
109|.define SAVE_NRES, 120(sp)
110|.define SAVE_CFRAME, 112(sp) // 64 bit values.
111|.define SAVE_L, 104(sp)
112|.define SAVE_PC, 96(sp)
113|//----- 16 byte aligned
114|.define SAVE_GPR_, 16 // .. 16+10*8: 64 bit GPR saves.
115|
116|.endif
117|
118|.define TMPX, 8(sp) // Unused by interpreter, temp for JIT code.
119|.define TMPD, 0(sp)
120|//----- 16 byte aligned
121|
122|.define TMPD_OFS, 0
123|
124|.define SAVE_MULTRES, TMPD
125|
126|//-----------------------------------------------------------------------
127|
128|.macro saveregs
129| daddiu sp, sp, -CFRAME_SPACE
130| sd ra, SAVE_GPR_+9*8(sp)
131| sd r30, SAVE_GPR_+8*8(sp)
132| .FPU sdc1 f31, SAVE_FPR_+7*8(sp)
133| sd r23, SAVE_GPR_+7*8(sp)
134| .FPU sdc1 f30, SAVE_FPR_+6*8(sp)
135| sd r22, SAVE_GPR_+6*8(sp)
136| .FPU sdc1 f29, SAVE_FPR_+5*8(sp)
137| sd r21, SAVE_GPR_+5*8(sp)
138| .FPU sdc1 f28, SAVE_FPR_+4*8(sp)
139| sd r20, SAVE_GPR_+4*8(sp)
140| .FPU sdc1 f27, SAVE_FPR_+3*8(sp)
141| sd r19, SAVE_GPR_+3*8(sp)
142| .FPU sdc1 f26, SAVE_FPR_+2*8(sp)
143| sd r18, SAVE_GPR_+2*8(sp)
144| .FPU sdc1 f25, SAVE_FPR_+1*8(sp)
145| sd r17, SAVE_GPR_+1*8(sp)
146| .FPU sdc1 f24, SAVE_FPR_+0*8(sp)
147| sd r16, SAVE_GPR_+0*8(sp)
148|.endmacro
149|
150|.macro restoreregs_ret
151| ld ra, SAVE_GPR_+9*8(sp)
152| ld r30, SAVE_GPR_+8*8(sp)
153| ld r23, SAVE_GPR_+7*8(sp)
154| .FPU ldc1 f31, SAVE_FPR_+7*8(sp)
155| ld r22, SAVE_GPR_+6*8(sp)
156| .FPU ldc1 f30, SAVE_FPR_+6*8(sp)
157| ld r21, SAVE_GPR_+5*8(sp)
158| .FPU ldc1 f29, SAVE_FPR_+5*8(sp)
159| ld r20, SAVE_GPR_+4*8(sp)
160| .FPU ldc1 f28, SAVE_FPR_+4*8(sp)
161| ld r19, SAVE_GPR_+3*8(sp)
162| .FPU ldc1 f27, SAVE_FPR_+3*8(sp)
163| ld r18, SAVE_GPR_+2*8(sp)
164| .FPU ldc1 f26, SAVE_FPR_+2*8(sp)
165| ld r17, SAVE_GPR_+1*8(sp)
166| .FPU ldc1 f25, SAVE_FPR_+1*8(sp)
167| ld r16, SAVE_GPR_+0*8(sp)
168| .FPU ldc1 f24, SAVE_FPR_+0*8(sp)
169| jr ra
170| daddiu sp, sp, CFRAME_SPACE
171|.endmacro
172|
173|// Type definitions. Some of these are only used for documentation.
174|.type L, lua_State, LREG
175|.type GL, global_State
176|.type TVALUE, TValue
177|.type GCOBJ, GCobj
178|.type STR, GCstr
179|.type TAB, GCtab
180|.type LFUNC, GCfuncL
181|.type CFUNC, GCfuncC
182|.type PROTO, GCproto
183|.type UPVAL, GCupval
184|.type NODE, Node
185|.type NARGS8, int
186|.type TRACE, GCtrace
187|.type SBUF, SBuf
188|
189|//-----------------------------------------------------------------------
190|
191|// Trap for not-yet-implemented parts.
192|.macro NYI; .long 0xf0f0f0f0; .endmacro
193|
194|// Macros to mark delay slots.
195|.macro ., a; a; .endmacro
196|.macro ., a,b; a,b; .endmacro
197|.macro ., a,b,c; a,b,c; .endmacro
198|.macro ., a,b,c,d; a,b,c,d; .endmacro
199|
200|.define FRAME_PC, -8
201|.define FRAME_FUNC, -16
202|
203|//-----------------------------------------------------------------------
204|
205|// Endian-specific defines.
206|.if ENDIAN_LE
207|.define HI, 4
208|.define LO, 0
209|.define OFS_RD, 2
210|.define OFS_RA, 1
211|.define OFS_OP, 0
212|.else
213|.define HI, 0
214|.define LO, 4
215|.define OFS_RD, 0
216|.define OFS_RA, 2
217|.define OFS_OP, 3
218|.endif
219|
220|// Instruction decode.
221|.macro decode_OP1, dst, ins; andi dst, ins, 0xff; .endmacro
222|.macro decode_OP8a, dst, ins; andi dst, ins, 0xff; .endmacro
223|.macro decode_OP8b, dst; sll dst, dst, 3; .endmacro
224|.macro decode_RC8a, dst, ins; srl dst, ins, 13; .endmacro
225|.macro decode_RC8b, dst; andi dst, dst, 0x7f8; .endmacro
226|.macro decode_RD4b, dst; sll dst, dst, 2; .endmacro
227|.macro decode_RA8a, dst, ins; srl dst, ins, 5; .endmacro
228|.macro decode_RA8b, dst; andi dst, dst, 0x7f8; .endmacro
229|.macro decode_RB8a, dst, ins; srl dst, ins, 21; .endmacro
230|.macro decode_RB8b, dst; andi dst, dst, 0x7f8; .endmacro
231|.macro decode_RD8a, dst, ins; srl dst, ins, 16; .endmacro
232|.macro decode_RD8b, dst; sll dst, dst, 3; .endmacro
233|.macro decode_RDtoRC8, dst, src; andi dst, src, 0x7f8; .endmacro
234|
235|// Instruction fetch.
236|.macro ins_NEXT1
237| lw INS, 0(PC)
238| daddiu PC, PC, 4
239|.endmacro
240|// Instruction decode+dispatch.
241|.macro ins_NEXT2
242| decode_OP8a TMP1, INS
243| decode_OP8b TMP1
244| daddu TMP0, DISPATCH, TMP1
245| decode_RD8a RD, INS
246| ld AT, 0(TMP0)
247| decode_RA8a RA, INS
248| decode_RD8b RD
249| jr AT
250| decode_RA8b RA
251|.endmacro
252|.macro ins_NEXT
253| ins_NEXT1
254| ins_NEXT2
255|.endmacro
256|
257|// Instruction footer.
258|.if 1
259| // Replicated dispatch. Less unpredictable branches, but higher I-Cache use.
260| .define ins_next, ins_NEXT
261| .define ins_next_, ins_NEXT
262| .define ins_next1, ins_NEXT1
263| .define ins_next2, ins_NEXT2
264|.else
265| // Common dispatch. Lower I-Cache use, only one (very) unpredictable branch.
266| // Affects only certain kinds of benchmarks (and only with -j off).
267| .macro ins_next
268| b ->ins_next
269| .endmacro
270| .macro ins_next1
271| .endmacro
272| .macro ins_next2
273| b ->ins_next
274| .endmacro
275| .macro ins_next_
276| ->ins_next:
277| ins_NEXT
278| .endmacro
279|.endif
280|
281|// Call decode and dispatch.
282|.macro ins_callt
283| // BASE = new base, RB = LFUNC/CFUNC, RC = nargs*8, FRAME_PC(BASE) = PC
284| ld PC, LFUNC:RB->pc
285| lw INS, 0(PC)
286| daddiu PC, PC, 4
287| decode_OP8a TMP1, INS
288| decode_RA8a RA, INS
289| decode_OP8b TMP1
290| decode_RA8b RA
291| daddu TMP0, DISPATCH, TMP1
292| ld TMP0, 0(TMP0)
293| jr TMP0
294| daddu RA, RA, BASE
295|.endmacro
296|
297|.macro ins_call
298| // BASE = new base, RB = LFUNC/CFUNC, RC = nargs*8, PC = caller PC
299| sd PC, FRAME_PC(BASE)
300| ins_callt
301|.endmacro
302|
303|//-----------------------------------------------------------------------
304|
305|.macro branch_RD
306| srl TMP0, RD, 1
307| lui AT, (-(BCBIAS_J*4 >> 16) & 65535)
308| addu TMP0, TMP0, AT
309| daddu PC, PC, TMP0
310|.endmacro
311|
312|// Assumes DISPATCH is relative to GL.
313#define DISPATCH_GL(field) (GG_DISP2G + (int)offsetof(global_State, field))
314#define DISPATCH_J(field) (GG_DISP2J + (int)offsetof(jit_State, field))
315#define GG_DISP2GOT (GG_OFS(got) - GG_OFS(dispatch))
316#define DISPATCH_GOT(name) (GG_DISP2GOT + sizeof(void*)*LJ_GOT_##name)
317|
318#define PC2PROTO(field) ((int)offsetof(GCproto, field)-(int)sizeof(GCproto))
319|
320|.macro load_got, func
321| ld CFUNCADDR, DISPATCH_GOT(func)(DISPATCH)
322|.endmacro
323|// Much faster. Sadly, there's no easy way to force the required code layout.
324|// .macro call_intern, func; bal extern func; .endmacro
325|.macro call_intern, func; jalr CFUNCADDR; .endmacro
326|.macro call_extern; jalr CFUNCADDR; .endmacro
327|.macro jmp_extern; jr CFUNCADDR; .endmacro
328|
329|.macro hotcheck, delta, target
330| NYI
331|.endmacro
332|
333|.macro hotloop
334| hotcheck HOTCOUNT_LOOP, ->vm_hotloop
335|.endmacro
336|
337|.macro hotcall
338| hotcheck HOTCOUNT_CALL, ->vm_hotcall
339|.endmacro
340|
341|// Set current VM state. Uses TMP0.
342|.macro li_vmstate, st; li TMP0, ~LJ_VMST_..st; .endmacro
343|.macro st_vmstate; sw TMP0, DISPATCH_GL(vmstate)(DISPATCH); .endmacro
344|
345|// Move table write barrier back. Overwrites mark and tmp.
346|.macro barrierback, tab, mark, tmp, target
347| ld tmp, DISPATCH_GL(gc.grayagain)(DISPATCH)
348| andi mark, mark, ~LJ_GC_BLACK & 255 // black2gray(tab)
349| sd tab, DISPATCH_GL(gc.grayagain)(DISPATCH)
350| sb mark, tab->marked
351| b target
352|. sd tmp, tab->gclist
353|.endmacro
354|
355|// Clear type tag. Isolate lowest 14+32+1=47 bits of reg.
356|.macro cleartp, reg; dextm reg, reg, 0, 14; .endmacro
357|.macro cleartp, dst, reg; dextm dst, reg, 0, 14; .endmacro
358|
359|// Set type tag: Merge 17 type bits into bits [15+32=47, 31+32+1=64) of dst.
360|.macro settp, dst, tp; dinsu dst, tp, 15, 31; .endmacro
361|
362|// Extract (negative) type tag.
363|.macro gettp, dst, src; dsra dst, src, 47; .endmacro
364|
365|// Macros to check the TValue type and extract the GCobj. Branch on failure.
366|.macro checktp, reg, tp, target
367| gettp AT, reg
368| daddiu AT, AT, tp
369| bnez AT, target
370|. cleartp reg
371|.endmacro
372|.macro checktp, dst, reg, tp, target
373| gettp AT, reg
374| daddiu AT, AT, tp
375| bnez AT, target
376|. cleartp dst, reg
377|.endmacro
378|.macro checkstr, reg, target; checktp reg, -LJ_TSTR, target; .endmacro
379|.macro checktab, reg, target; checktp reg, -LJ_TTAB, target; .endmacro
380|.macro checkfunc, reg, target; checktp reg, -LJ_TFUNC, target; .endmacro
381|.macro checkint, reg, target // Caveat: has delay slot!
382| gettp AT, reg
383| bne AT, TISNUM, target
384|.endmacro
385|.macro checknum, reg, target // Caveat: has delay slot!
386| gettp AT, reg
387| sltiu AT, AT, LJ_TISNUM
388| beqz AT, target
389|.endmacro
390|
391|.macro mov_false, reg
392| lu reg, 0x8000
393| dsll reg, reg, 32
394| not reg, reg
395|.endmacro
396|.macro mov_true, reg
397| li reg, 0x0001
398| dsll reg, reg, 48
399| not reg, reg
400|.endmacro
401|
402|//-----------------------------------------------------------------------
403
404/* Generate subroutines used by opcodes and other parts of the VM. */
405/* The .code_sub section should be last to help static branch prediction. */
406static void build_subroutines(BuildCtx *ctx)
407{
408 |.code_sub
409 |
410 |//-----------------------------------------------------------------------
411 |//-- Return handling ----------------------------------------------------
412 |//-----------------------------------------------------------------------
413 |
414 |->vm_returnp:
415 | // See vm_return. Also: TMP2 = previous base.
416 | andi AT, PC, FRAME_P
417 | beqz AT, ->cont_dispatch
418 |
419 | // Return from pcall or xpcall fast func.
420 |. mov_true TMP1
421 | ld PC, FRAME_PC(TMP2) // Fetch PC of previous frame.
422 | move BASE, TMP2 // Restore caller base.
423 | // Prepending may overwrite the pcall frame, so do it at the end.
424 | sd TMP1, -8(RA) // Prepend true to results.
425 | daddiu RA, RA, -8
426 |
427 |->vm_returnc:
428 | addiu RD, RD, 8 // RD = (nresults+1)*8.
429 | andi TMP0, PC, FRAME_TYPE
430 | beqz RD, ->vm_unwind_c_eh
431 |. li CRET1, LUA_YIELD
432 | beqz TMP0, ->BC_RET_Z // Handle regular return to Lua.
433 |. move MULTRES, RD
434 |
435 |->vm_return:
436 | // BASE = base, RA = resultptr, RD/MULTRES = (nresults+1)*8, PC = return
437 | // TMP0 = PC & FRAME_TYPE
438 | li TMP2, -8
439 | xori AT, TMP0, FRAME_C
440 | and TMP2, PC, TMP2
441 | bnez AT, ->vm_returnp
442 | dsubu TMP2, BASE, TMP2 // TMP2 = previous base.
443 |
444 | addiu TMP1, RD, -8
445 | sd TMP2, L->base
446 | li_vmstate C
447 | lw TMP2, SAVE_NRES
448 | daddiu BASE, BASE, -16
449 | st_vmstate
450 | beqz TMP1, >2
451 |. sll TMP2, TMP2, 3
452 |1:
453 | addiu TMP1, TMP1, -8
454 | ld CRET1, 0(RA)
455 | daddiu RA, RA, 8
456 | sd CRET1, 0(BASE)
457 | bnez TMP1, <1
458 |. daddiu BASE, BASE, 8
459 |
460 |2:
461 | bne TMP2, RD, >6
462 |3:
463 |. sd BASE, L->top // Store new top.
464 |
465 |->vm_leave_cp:
466 | ld TMP0, SAVE_CFRAME // Restore previous C frame.
467 | move CRET1, r0 // Ok return status for vm_pcall.
468 | sd TMP0, L->cframe
469 |
470 |->vm_leave_unw:
471 | restoreregs_ret
472 |
473 |6:
474 | ld TMP1, L->maxstack
475 | slt AT, TMP2, RD
476 | bnez AT, >7 // Less results wanted?
477 | // More results wanted. Check stack size and fill up results with nil.
478 |. slt AT, BASE, TMP1
479 | beqz AT, >8
480 |. nop
481 | sd TISNIL, 0(BASE)
482 | addiu RD, RD, 8
483 | b <2
484 |. daddiu BASE, BASE, 8
485 |
486 |7: // Less results wanted.
487 | subu TMP0, RD, TMP2
488 | dsubu TMP0, BASE, TMP0 // Either keep top or shrink it.
489 | b <3
490 |. movn BASE, TMP0, TMP2 // LUA_MULTRET+1 case?
491 |
492 |8: // Corner case: need to grow stack for filling up results.
493 | // This can happen if:
494 | // - A C function grows the stack (a lot).
495 | // - The GC shrinks the stack in between.
496 | // - A return back from a lua_call() with (high) nresults adjustment.
497 | load_got lj_state_growstack
498 | move MULTRES, RD
499 | srl CARG2, TMP2, 3
500 | call_intern lj_state_growstack // (lua_State *L, int n)
501 |. move CARG1, L
502 | lw TMP2, SAVE_NRES
503 | ld BASE, L->top // Need the (realloced) L->top in BASE.
504 | move RD, MULTRES
505 | b <2
506 |. sll TMP2, TMP2, 3
507 |
508 |->vm_unwind_c: // Unwind C stack, return from vm_pcall.
509 | // (void *cframe, int errcode)
510 | move sp, CARG1
511 | move CRET1, CARG2
512 |->vm_unwind_c_eh: // Landing pad for external unwinder.
513 | ld L, SAVE_L
514 | li TMP0, ~LJ_VMST_C
515 | ld GL:TMP1, L->glref
516 | b ->vm_leave_unw
517 |. sw TMP0, GL:TMP1->vmstate
518 |
519 |->vm_unwind_ff: // Unwind C stack, return from ff pcall.
520 | // (void *cframe)
521 | li AT, -4
522 | and sp, CARG1, AT
523 |->vm_unwind_ff_eh: // Landing pad for external unwinder.
524 | ld L, SAVE_L
525 | .FPU lui TMP3, 0x59c0 // TOBIT = 2^52 + 2^51 (float).
526 | li TISNIL, LJ_TNIL
527 | li TISNUM, LJ_TISNUM
528 | ld BASE, L->base
529 | ld DISPATCH, L->glref // Setup pointer to dispatch table.
530 | .FPU mtc1 TMP3, TOBIT
531 | mov_false TMP1
532 | li_vmstate INTERP
533 | ld PC, FRAME_PC(BASE) // Fetch PC of previous frame.
534 | .FPU cvt.d.s TOBIT, TOBIT
535 | daddiu RA, BASE, -8 // Results start at BASE-8.
536 | daddiu DISPATCH, DISPATCH, GG_G2DISP
537 | sd TMP1, 0(RA) // Prepend false to error message.
538 | st_vmstate
539 | b ->vm_returnc
540 |. li RD, 16 // 2 results: false + error message.
541 |
542 |//-----------------------------------------------------------------------
543 |//-- Grow stack for calls -----------------------------------------------
544 |//-----------------------------------------------------------------------
545 |
546 |->vm_growstack_c: // Grow stack for C function.
547 | b >2
548 |. li CARG2, LUA_MINSTACK
549 |
550 |->vm_growstack_l: // Grow stack for Lua function.
551 | // BASE = new base, RA = BASE+framesize*8, RC = nargs*8, PC = first PC
552 | daddu RC, BASE, RC
553 | dsubu RA, RA, BASE
554 | sd BASE, L->base
555 | daddiu PC, PC, 4 // Must point after first instruction.
556 | sd RC, L->top
557 | srl CARG2, RA, 3
558 |2:
559 | // L->base = new base, L->top = top
560 | load_got lj_state_growstack
561 | sd PC, SAVE_PC
562 | call_intern lj_state_growstack // (lua_State *L, int n)
563 |. move CARG1, L
564 | ld BASE, L->base
565 | ld RC, L->top
566 | ld LFUNC:RB, FRAME_FUNC(BASE)
567 | dsubu RC, RC, BASE
568 | cleartp LFUNC:RB
569 | // BASE = new base, RB = LFUNC/CFUNC, RC = nargs*8, FRAME_PC(BASE) = PC
570 | ins_callt // Just retry the call.
571 |
572 |//-----------------------------------------------------------------------
573 |//-- Entry points into the assembler VM ---------------------------------
574 |//-----------------------------------------------------------------------
575 |
576 |->vm_resume: // Setup C frame and resume thread.
577 | // (lua_State *L, TValue *base, int nres1 = 0, ptrdiff_t ef = 0)
578 | saveregs
579 | move L, CARG1
580 | ld DISPATCH, L->glref // Setup pointer to dispatch table.
581 | move BASE, CARG2
582 | lbu TMP1, L->status
583 | sd L, SAVE_L
584 | li PC, FRAME_CP
585 | daddiu TMP0, sp, CFRAME_RESUME
586 | daddiu DISPATCH, DISPATCH, GG_G2DISP
587 | sw r0, SAVE_NRES
588 | sw r0, SAVE_ERRF
589 | sd CARG1, SAVE_PC // Any value outside of bytecode is ok.
590 | sd r0, SAVE_CFRAME
591 | beqz TMP1, >3
592 |. sd TMP0, L->cframe
593 |
594 | // Resume after yield (like a return).
595 | sd L, DISPATCH_GL(cur_L)(DISPATCH)
596 | move RA, BASE
597 | ld BASE, L->base
598 | ld TMP1, L->top
599 | ld PC, FRAME_PC(BASE)
600 | .FPU lui TMP3, 0x59c0 // TOBIT = 2^52 + 2^51 (float).
601 | dsubu RD, TMP1, BASE
602 | .FPU mtc1 TMP3, TOBIT
603 | sb r0, L->status
604 | .FPU cvt.d.s TOBIT, TOBIT
605 | li_vmstate INTERP
606 | daddiu RD, RD, 8
607 | st_vmstate
608 | move MULTRES, RD
609 | andi TMP0, PC, FRAME_TYPE
610 | li TISNIL, LJ_TNIL
611 | beqz TMP0, ->BC_RET_Z
612 |. li TISNUM, LJ_TISNUM
613 | b ->vm_return
614 |. nop
615 |
616 |->vm_pcall: // Setup protected C frame and enter VM.
617 | // (lua_State *L, TValue *base, int nres1, ptrdiff_t ef)
618 | saveregs
619 | sw CARG4, SAVE_ERRF
620 | b >1
621 |. li PC, FRAME_CP
622 |
623 |->vm_call: // Setup C frame and enter VM.
624 | // (lua_State *L, TValue *base, int nres1)
625 | saveregs
626 | li PC, FRAME_C
627 |
628 |1: // Entry point for vm_pcall above (PC = ftype).
629 | ld TMP1, L:CARG1->cframe
630 | move L, CARG1
631 | sw CARG3, SAVE_NRES
632 | ld DISPATCH, L->glref // Setup pointer to dispatch table.
633 | sd CARG1, SAVE_L
634 | move BASE, CARG2
635 | daddiu DISPATCH, DISPATCH, GG_G2DISP
636 | sd CARG1, SAVE_PC // Any value outside of bytecode is ok.
637 | sd TMP1, SAVE_CFRAME
638 | sd sp, L->cframe // Add our C frame to cframe chain.
639 |
640 |3: // Entry point for vm_cpcall/vm_resume (BASE = base, PC = ftype).
641 | sd L, DISPATCH_GL(cur_L)(DISPATCH)
642 | ld TMP2, L->base // TMP2 = old base (used in vmeta_call).
643 | .FPU lui TMP3, 0x59c0 // TOBIT = 2^52 + 2^51 (float).
644 | ld TMP1, L->top
645 | .FPU mtc1 TMP3, TOBIT
646 | daddu PC, PC, BASE
647 | dsubu NARGS8:RC, TMP1, BASE
648 | li TISNUM, LJ_TISNUM
649 | dsubu PC, PC, TMP2 // PC = frame delta + frame type
650 | .FPU cvt.d.s TOBIT, TOBIT
651 | li_vmstate INTERP
652 | li TISNIL, LJ_TNIL
653 | st_vmstate
654 |
655 |->vm_call_dispatch:
656 | // TMP2 = old base, BASE = new base, RC = nargs*8, PC = caller PC
657 | ld LFUNC:RB, FRAME_FUNC(BASE)
658 | checkfunc LFUNC:RB, ->vmeta_call
659 |
660 |->vm_call_dispatch_f:
661 | ins_call
662 | // BASE = new base, RB = func, RC = nargs*8, PC = caller PC
663 |
664 |->vm_cpcall: // Setup protected C frame, call C.
665 | // (lua_State *L, lua_CFunction func, void *ud, lua_CPFunction cp)
666 | saveregs
667 | move L, CARG1
668 | ld TMP0, L:CARG1->stack
669 | sd CARG1, SAVE_L
670 | ld TMP1, L->top
671 | ld DISPATCH, L->glref // Setup pointer to dispatch table.
672 | sd CARG1, SAVE_PC // Any value outside of bytecode is ok.
673 | dsubu TMP0, TMP0, TMP1 // Compute -savestack(L, L->top).
674 | ld TMP1, L->cframe
675 | daddiu DISPATCH, DISPATCH, GG_G2DISP
676 | sw TMP0, SAVE_NRES // Neg. delta means cframe w/o frame.
677 | sw r0, SAVE_ERRF // No error function.
678 | sd TMP1, SAVE_CFRAME
679 | sd sp, L->cframe // Add our C frame to cframe chain.
680 | sd L, DISPATCH_GL(cur_L)(DISPATCH)
681 | jalr CARG4 // (lua_State *L, lua_CFunction func, void *ud)
682 |. move CFUNCADDR, CARG4
683 | move BASE, CRET1
684 | bnez CRET1, <3 // Else continue with the call.
685 |. li PC, FRAME_CP
686 | b ->vm_leave_cp // No base? Just remove C frame.
687 |. nop
688 |
689 |//-----------------------------------------------------------------------
690 |//-- Metamethod handling ------------------------------------------------
691 |//-----------------------------------------------------------------------
692 |
693 |// The lj_meta_* functions (except for lj_meta_cat) don't reallocate the
694 |// stack, so BASE doesn't need to be reloaded across these calls.
695 |
696 |//-- Continuation dispatch ----------------------------------------------
697 |
698 |->cont_dispatch:
699 | // BASE = meta base, RA = resultptr, RD = (nresults+1)*8
700 | ld TMP0, -32(BASE) // Continuation.
701 | move RB, BASE
702 | move BASE, TMP2 // Restore caller BASE.
703 | ld LFUNC:TMP1, FRAME_FUNC(TMP2)
704 |.if FFI
705 | sltiu AT, TMP0, 2
706 |.endif
707 | ld PC, -24(RB) // Restore PC from [cont|PC].
708 | cleartp LFUNC:TMP1
709 | daddu TMP2, RA, RD
710 | ld TMP1, LFUNC:TMP1->pc
711 |.if FFI
712 | bnez AT, >1
713 |.endif
714 |. sd TISNIL, -8(TMP2) // Ensure one valid arg.
715 | // BASE = base, RA = resultptr, RB = meta base
716 | jr TMP0 // Jump to continuation.
717 |. ld KBASE, PC2PROTO(k)(TMP1)
718 |
719 |.if FFI
720 |1:
721 | bnez TMP0, ->cont_ffi_callback // cont = 1: return from FFI callback.
722 | // cont = 0: tailcall from C function.
723 |. daddiu TMP1, RB, -32
724 | b ->vm_call_tail
725 |. dsubu RC, TMP1, BASE
726 |.endif
727 |
728 |->cont_cat: // RA = resultptr, RB = meta base
729 | lw INS, -4(PC)
730 | daddiu CARG2, RB, -32
731 | ld CRET1, 0(RA)
732 | decode_RB8a MULTRES, INS
733 | decode_RA8a RA, INS
734 | decode_RB8b MULTRES
735 | decode_RA8b RA
736 | daddu TMP1, BASE, MULTRES
737 | sd BASE, L->base
738 | dsubu CARG3, CARG2, TMP1
739 | bne TMP1, CARG2, ->BC_CAT_Z
740 |. sd CRET1, 0(CARG2)
741 | daddu RA, BASE, RA
742 | b ->cont_nop
743 |. sd CRET1, 0(RA)
744 |
745 |//-- Table indexing metamethods -----------------------------------------
746 |
747 |->vmeta_tgets1:
748 | daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv)
749 | li TMP0, LJ_TSTR
750 | settp STR:RC, TMP0
751 | b >1
752 |. sd STR:RC, 0(CARG3)
753 |
754 |->vmeta_tgets:
755 | daddiu CARG2, DISPATCH, DISPATCH_GL(tmptv)
756 | li TMP0, LJ_TTAB
757 | li TMP1, LJ_TSTR
758 | settp TAB:RB, TMP0
759 | daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv2)
760 | sd TAB:RB, 0(CARG2)
761 | settp STR:RC, TMP1
762 | b >1
763 |. sd STR:RC, 0(CARG3)
764 |
765 |->vmeta_tgetb: // TMP0 = index
766 | daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv)
767 | settp TMP0, TISNUM
768 | sd TMP0, 0(CARG3)
769 |
770 |->vmeta_tgetv:
771 |1:
772 | load_got lj_meta_tget
773 | sd BASE, L->base
774 | sd PC, SAVE_PC
775 | call_intern lj_meta_tget // (lua_State *L, TValue *o, TValue *k)
776 |. move CARG1, L
777 | // Returns TValue * (finished) or NULL (metamethod).
778 | beqz CRET1, >3
779 |. daddiu TMP1, BASE, -FRAME_CONT
780 | ld CARG1, 0(CRET1)
781 | ins_next1
782 | sd CARG1, 0(RA)
783 | ins_next2
784 |
785 |3: // Call __index metamethod.
786 | // BASE = base, L->top = new base, stack = cont/func/t/k
787 | ld BASE, L->top
788 | sd PC, -24(BASE) // [cont|PC]
789 | dsubu PC, BASE, TMP1
790 | ld LFUNC:RB, FRAME_FUNC(BASE) // Guaranteed to be a function here.
791 | cleartp LFUNC:RB
792 | b ->vm_call_dispatch_f
793 |. li NARGS8:RC, 16 // 2 args for func(t, k).
794 |
795 |->vmeta_tgetr:
796 | load_got lj_tab_getinth
797 | call_intern lj_tab_getinth // (GCtab *t, int32_t key)
798 |. nop
799 | // Returns cTValue * or NULL.
800 | beqz CRET1, ->BC_TGETR_Z
801 |. move CARG2, TISNIL
802 | b ->BC_TGETR_Z
803 |. ld CARG2, 0(CRET1)
804 |
805 |//-----------------------------------------------------------------------
806 |
807 |->vmeta_tsets1:
808 | daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv)
809 | li TMP0, LJ_TSTR
810 | settp STR:RC, TMP0
811 | b >1
812 |. sd STR:RC, 0(CARG3)
813 |
814 |->vmeta_tsets:
815 | daddiu CARG2, DISPATCH, DISPATCH_GL(tmptv)
816 | li TMP0, LJ_TTAB
817 | li TMP1, LJ_TSTR
818 | settp TAB:RB, TMP0
819 | daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv2)
820 | sd TAB:RB, 0(CARG2)
821 | settp STR:RC, TMP1
822 | b >1
823 |. sd STR:RC, 0(CARG3)
824 |
825 |->vmeta_tsetb: // TMP0 = index
826 | daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv)
827 | settp TMP0, TISNUM
828 | sd TMP0, 0(CARG3)
829 |
830 |->vmeta_tsetv:
831 |1:
832 | load_got lj_meta_tset
833 | sd BASE, L->base
834 | sd PC, SAVE_PC
835 | call_intern lj_meta_tset // (lua_State *L, TValue *o, TValue *k)
836 |. move CARG1, L
837 | // Returns TValue * (finished) or NULL (metamethod).
838 | beqz CRET1, >3
839 |. ld CARG1, 0(RA)
840 | // NOBARRIER: lj_meta_tset ensures the table is not black.
841 | ins_next1
842 | sd CARG1, 0(CRET1)
843 | ins_next2
844 |
845 |3: // Call __newindex metamethod.
846 | // BASE = base, L->top = new base, stack = cont/func/t/k/(v)
847 | daddiu TMP1, BASE, -FRAME_CONT
848 | ld BASE, L->top
849 | sd PC, -24(BASE) // [cont|PC]
850 | dsubu PC, BASE, TMP1
851 | ld LFUNC:RB, FRAME_FUNC(BASE) // Guaranteed to be a function here.
852 | cleartp LFUNC:RB
853 | sd CARG1, 16(BASE) // Copy value to third argument.
854 | b ->vm_call_dispatch_f
855 |. li NARGS8:RC, 24 // 3 args for func(t, k, v)
856 |
857 |->vmeta_tsetr:
858 | load_got lj_tab_setinth
859 | sd BASE, L->base
860 | sd PC, SAVE_PC
861 | call_intern lj_tab_setinth // (lua_State *L, GCtab *t, int32_t key)
862 |. move CARG1, L
863 | // Returns TValue *.
864 | b ->BC_TSETR_Z
865 |. nop
866 |
867 |//-- Comparison metamethods ---------------------------------------------
868 |
869 |->vmeta_comp:
870 | // RA/RD point to o1/o2.
871 | move CARG2, RA
872 | move CARG3, RD
873 | load_got lj_meta_comp
874 | daddiu PC, PC, -4
875 | sd BASE, L->base
876 | sd PC, SAVE_PC
877 | decode_OP1 CARG4, INS
878 | call_intern lj_meta_comp // (lua_State *L, TValue *o1, *o2, int op)
879 |. move CARG1, L
880 | // Returns 0/1 or TValue * (metamethod).
881 |3:
882 | sltiu AT, CRET1, 2
883 | beqz AT, ->vmeta_binop
884 | negu TMP2, CRET1
885 |4:
886 | lhu RD, OFS_RD(PC)
887 | daddiu PC, PC, 4
888 | lui TMP1, (-(BCBIAS_J*4 >> 16) & 65535)
889 | sll RD, RD, 2
890 | addu RD, RD, TMP1
891 | and RD, RD, TMP2
892 | daddu PC, PC, RD
893 |->cont_nop:
894 | ins_next
895 |
896 |->cont_ra: // RA = resultptr
897 | lbu TMP1, -4+OFS_RA(PC)
898 | ld CRET1, 0(RA)
899 | sll TMP1, TMP1, 3
900 | daddu TMP1, BASE, TMP1
901 | b ->cont_nop
902 |. sd CRET1, 0(TMP1)
903 |
904 |->cont_condt: // RA = resultptr
905 | ld TMP0, 0(RA)
906 | gettp TMP0, TMP0
907 | sltiu AT, TMP0, LJ_TISTRUECOND
908 | b <4
909 |. negu TMP2, AT // Branch if result is true.
910 |
911 |->cont_condf: // RA = resultptr
912 | ld TMP0, 0(RA)
913 | gettp TMP0, TMP0
914 | sltiu AT, TMP0, LJ_TISTRUECOND
915 | b <4
916 |. addiu TMP2, AT, -1 // Branch if result is false.
917 |
918 |->vmeta_equal:
919 | // CARG1/CARG2 point to o1/o2. TMP0 is set to 0/1.
920 | load_got lj_meta_equal
921 | cleartp LFUNC:CARG3, CARG2
922 | cleartp LFUNC:CARG2, CARG1
923 | move CARG4, TMP0
924 | daddiu PC, PC, -4
925 | sd BASE, L->base
926 | sd PC, SAVE_PC
927 | call_intern lj_meta_equal // (lua_State *L, GCobj *o1, *o2, int ne)
928 |. move CARG1, L
929 | // Returns 0/1 or TValue * (metamethod).
930 | b <3
931 |. nop
932 |
933 |->vmeta_equal_cd:
934 |.if FFI
935 | load_got lj_meta_equal_cd
936 | move CARG2, INS
937 | daddiu PC, PC, -4
938 | sd BASE, L->base
939 | sd PC, SAVE_PC
940 | call_intern lj_meta_equal_cd // (lua_State *L, BCIns op)
941 |. move CARG1, L
942 | // Returns 0/1 or TValue * (metamethod).
943 | b <3
944 |. nop
945 |.endif
946 |
947 |->vmeta_istype:
948 | load_got lj_meta_istype
949 | daddiu PC, PC, -4
950 | sd BASE, L->base
951 | srl CARG2, RA, 3
952 | srl CARG3, RD, 3
953 | sd PC, SAVE_PC
954 | call_intern lj_meta_istype // (lua_State *L, BCReg ra, BCReg tp)
955 |. move CARG1, L
956 | b ->cont_nop
957 |. nop
958 |
959 |//-- Arithmetic metamethods ---------------------------------------------
960 |
961 |->vmeta_unm:
962 | move RC, RB
963 |
964 |->vmeta_arith:
965 | load_got lj_meta_arith
966 | sd BASE, L->base
967 | move CARG2, RA
968 | sd PC, SAVE_PC
969 | move CARG3, RB
970 | move CARG4, RC
971 | decode_OP1 CARG5, INS // CARG5 == RB.
972 | call_intern lj_meta_arith // (lua_State *L, TValue *ra,*rb,*rc, BCReg op)
973 |. move CARG1, L
974 | // Returns NULL (finished) or TValue * (metamethod).
975 | beqz CRET1, ->cont_nop
976 |. nop
977 |
978 | // Call metamethod for binary op.
979 |->vmeta_binop:
980 | // BASE = old base, CRET1 = new base, stack = cont/func/o1/o2
981 | dsubu TMP1, CRET1, BASE
982 | sd PC, -24(CRET1) // [cont|PC]
983 | move TMP2, BASE
984 | daddiu PC, TMP1, FRAME_CONT
985 | move BASE, CRET1
986 | b ->vm_call_dispatch
987 |. li NARGS8:RC, 16 // 2 args for func(o1, o2).
988 |
989 |->vmeta_len:
990 | // CARG2 already set by BC_LEN.
991#if LJ_52
992 | move MULTRES, CARG1
993#endif
994 | load_got lj_meta_len
995 | sd BASE, L->base
996 | sd PC, SAVE_PC
997 | call_intern lj_meta_len // (lua_State *L, TValue *o)
998 |. move CARG1, L
999 | // Returns NULL (retry) or TValue * (metamethod base).
1000#if LJ_52
1001 | bnez CRET1, ->vmeta_binop // Binop call for compatibility.
1002 |. nop
1003 | b ->BC_LEN_Z
1004 |. move CARG1, MULTRES
1005#else
1006 | b ->vmeta_binop // Binop call for compatibility.
1007 |. nop
1008#endif
1009 |
1010 |//-- Call metamethod ----------------------------------------------------
1011 |
1012 |->vmeta_call: // Resolve and call __call metamethod.
1013 | // TMP2 = old base, BASE = new base, RC = nargs*8
1014 | load_got lj_meta_call
1015 | sd TMP2, L->base // This is the callers base!
1016 | daddiu CARG2, BASE, -16
1017 | sd PC, SAVE_PC
1018 | daddu CARG3, BASE, RC
1019 | move MULTRES, NARGS8:RC
1020 | call_intern lj_meta_call // (lua_State *L, TValue *func, TValue *top)
1021 |. move CARG1, L
1022 | ld LFUNC:RB, FRAME_FUNC(BASE) // Guaranteed to be a function here.
1023 | daddiu NARGS8:RC, MULTRES, 8 // Got one more argument now.
1024 | cleartp LFUNC:RB
1025 | ins_call
1026 |
1027 |->vmeta_callt: // Resolve __call for BC_CALLT.
1028 | // BASE = old base, RA = new base, RC = nargs*8
1029 | load_got lj_meta_call
1030 | sd BASE, L->base
1031 | daddiu CARG2, RA, -16
1032 | sd PC, SAVE_PC
1033 | daddu CARG3, RA, RC
1034 | move MULTRES, NARGS8:RC
1035 | call_intern lj_meta_call // (lua_State *L, TValue *func, TValue *top)
1036 |. move CARG1, L
1037 | ld RB, FRAME_FUNC(RA) // Guaranteed to be a function here.
1038 | ld TMP1, FRAME_PC(BASE)
1039 | daddiu NARGS8:RC, MULTRES, 8 // Got one more argument now.
1040 | b ->BC_CALLT_Z
1041 |. cleartp LFUNC:CARG3, RB
1042 |
1043 |//-- Argument coercion for 'for' statement ------------------------------
1044 |
1045 |->vmeta_for:
1046 | load_got lj_meta_for
1047 | sd BASE, L->base
1048 | move CARG2, RA
1049 | sd PC, SAVE_PC
1050 | move MULTRES, INS
1051 | call_intern lj_meta_for // (lua_State *L, TValue *base)
1052 |. move CARG1, L
1053 |.if JIT
1054 | decode_OP1 TMP0, MULTRES
1055 | li AT, BC_JFORI
1056 |.endif
1057 | decode_RA8a RA, MULTRES
1058 | decode_RD8a RD, MULTRES
1059 | decode_RA8b RA
1060 |.if JIT
1061 | beq TMP0, AT, =>BC_JFORI
1062 |. decode_RD8b RD
1063 | b =>BC_FORI
1064 |. nop
1065 |.else
1066 | b =>BC_FORI
1067 |. decode_RD8b RD
1068 |.endif
1069 |
1070 |//-----------------------------------------------------------------------
1071 |//-- Fast functions -----------------------------------------------------
1072 |//-----------------------------------------------------------------------
1073 |
1074 |.macro .ffunc, name
1075 |->ff_ .. name:
1076 |.endmacro
1077 |
1078 |.macro .ffunc_1, name
1079 |->ff_ .. name:
1080 | beqz NARGS8:RC, ->fff_fallback
1081 |. ld CARG1, 0(BASE)
1082 |.endmacro
1083 |
1084 |.macro .ffunc_2, name
1085 |->ff_ .. name:
1086 | sltiu AT, NARGS8:RC, 16
1087 | ld CARG1, 0(BASE)
1088 | bnez AT, ->fff_fallback
1089 |. ld CARG2, 8(BASE)
1090 |.endmacro
1091 |
1092 |.macro .ffunc_n, name // Caveat: has delay slot!
1093 |->ff_ .. name:
1094 | ld CARG1, 0(BASE)
1095 | beqz NARGS8:RC, ->fff_fallback
1096 | // Either ldc1 or the 1st instruction of checknum is in the delay slot.
1097 | .FPU ldc1 FARG1, 0(BASE)
1098 | checknum CARG1, ->fff_fallback
1099 |.endmacro
1100 |
1101 |.macro .ffunc_nn, name // Caveat: has delay slot!
1102 |->ff_ .. name:
1103 | ld CARG1, 0(BASE)
1104 | sltiu AT, NARGS8:RC, 16
1105 | ld CARG2, 8(BASE)
1106 | bnez AT, ->fff_fallback
1107 |. gettp TMP0, CARG1
1108 | gettp TMP1, CARG2
1109 | sltiu TMP0, TMP0, LJ_TISNUM
1110 | sltiu TMP1, TMP1, LJ_TISNUM
1111 | .FPU ldc1 FARG1, 0(BASE)
1112 | and TMP0, TMP0, TMP1
1113 | .FPU ldc1 FARG2, 8(BASE)
1114 | beqz TMP0, ->fff_fallback
1115 |.endmacro
1116 |
1117 |// Inlined GC threshold check. Caveat: uses TMP0 and TMP1 and has delay slot!
1118 |.macro ffgccheck
1119 | ld TMP0, DISPATCH_GL(gc.total)(DISPATCH)
1120 | ld TMP1, DISPATCH_GL(gc.threshold)(DISPATCH)
1121 | dsubu AT, TMP0, TMP1
1122 | bgezal AT, ->fff_gcstep
1123 |.endmacro
1124 |
1125 |//-- Base library: checks -----------------------------------------------
1126 |.ffunc_1 assert
1127 | gettp AT, CARG1
1128 | sltiu AT, AT, LJ_TISTRUECOND
1129 | beqz AT, ->fff_fallback
1130 |. daddiu RA, BASE, -16
1131 | ld PC, FRAME_PC(BASE)
1132 | addiu RD, NARGS8:RC, 8 // Compute (nresults+1)*8.
1133 | daddu TMP2, RA, RD
1134 | daddiu TMP1, BASE, 8
1135 | beq BASE, TMP2, ->fff_res // Done if exactly 1 argument.
1136 |. sd CARG1, 0(RA)
1137 |1:
1138 | ld CRET1, 0(TMP1)
1139 | sd CRET1, -16(TMP1)
1140 | bne TMP1, TMP2, <1
1141 |. daddiu TMP1, TMP1, 8
1142 | b ->fff_res
1143 |. nop
1144 |
1145 |.ffunc_1 type
1146 | gettp TMP0, CARG1
1147 | sltu TMP1, TISNUM, TMP0
1148 | not TMP2, TMP0
1149 | li TMP3, ~LJ_TISNUM
1150 | movz TMP2, TMP3, TMP1
1151 | dsll TMP2, TMP2, 3
1152 | daddu TMP2, CFUNC:RB, TMP2
1153 | b ->fff_restv
1154 |. ld CARG1, CFUNC:TMP2->upvalue
1155 |
1156 |//-- Base library: getters and setters ---------------------------------
1157 |
1158 |.ffunc_1 getmetatable
1159 | gettp TMP2, CARG1
1160 | daddiu TMP0, TMP2, -LJ_TTAB
1161 | daddiu TMP1, TMP2, -LJ_TUDATA
1162 | movn TMP0, TMP1, TMP0
1163 | bnez TMP0, >6
1164 |. cleartp TAB:CARG1
1165 |1: // Field metatable must be at same offset for GCtab and GCudata!
1166 | ld TAB:RB, TAB:CARG1->metatable
1167 |2:
1168 | ld STR:RC, DISPATCH_GL(gcroot[GCROOT_MMNAME+MM_metatable])(DISPATCH)
1169 | beqz TAB:RB, ->fff_restv
1170 |. li CARG1, LJ_TNIL
1171 | lw TMP0, TAB:RB->hmask
1172 | lw TMP1, STR:RC->hash
1173 | ld NODE:TMP2, TAB:RB->node
1174 | and TMP1, TMP1, TMP0 // idx = str->hash & tab->hmask
1175 | dsll TMP0, TMP1, 5
1176 | dsll TMP1, TMP1, 3
1177 | dsubu TMP1, TMP0, TMP1
1178 | daddu NODE:TMP2, NODE:TMP2, TMP1 // node = tab->node + (idx*32-idx*8)
1179 | li CARG4, LJ_TSTR
1180 | settp STR:RC, CARG4 // Tagged key to look for.
1181 |3: // Rearranged logic, because we expect _not_ to find the key.
1182 | ld TMP0, NODE:TMP2->key
1183 | ld CARG1, NODE:TMP2->val
1184 | ld NODE:TMP2, NODE:TMP2->next
1185 | beq RC, TMP0, >5
1186 |. li AT, LJ_TTAB
1187 | bnez NODE:TMP2, <3
1188 |. nop
1189 |4:
1190 | move CARG1, RB
1191 | b ->fff_restv // Not found, keep default result.
1192 |. settp CARG1, AT
1193 |5:
1194 | bne CARG1, TISNIL, ->fff_restv
1195 |. nop
1196 | b <4 // Ditto for nil value.
1197 |. nop
1198 |
1199 |6:
1200 | sltiu AT, TMP2, LJ_TISNUM
1201 | movn TMP2, TISNUM, AT
1202 | dsll TMP2, TMP2, 3
1203 | dsubu TMP0, DISPATCH, TMP2
1204 | b <2
1205 |. ld TAB:RB, DISPATCH_GL(gcroot[GCROOT_BASEMT])-8(TMP0)
1206 |
1207 |.ffunc_2 setmetatable
1208 | // Fast path: no mt for table yet and not clearing the mt.
1209 | checktp TMP1, CARG1, -LJ_TTAB, ->fff_fallback
1210 | gettp TMP3, CARG2
1211 | ld TAB:TMP0, TAB:TMP1->metatable
1212 | lbu TMP2, TAB:TMP1->marked
1213 | daddiu AT, TMP3, -LJ_TTAB
1214 | cleartp TAB:CARG2
1215 | or AT, AT, TAB:TMP0
1216 | bnez AT, ->fff_fallback
1217 |. andi AT, TMP2, LJ_GC_BLACK // isblack(table)
1218 | beqz AT, ->fff_restv
1219 |. sd TAB:CARG2, TAB:TMP1->metatable
1220 | barrierback TAB:TMP1, TMP2, TMP0, ->fff_restv
1221 |
1222 |.ffunc rawget
1223 | ld CARG2, 0(BASE)
1224 | sltiu AT, NARGS8:RC, 16
1225 | load_got lj_tab_get
1226 | gettp TMP0, CARG2
1227 | cleartp CARG2
1228 | daddiu TMP0, TMP0, -LJ_TTAB
1229 | or AT, AT, TMP0
1230 | bnez AT, ->fff_fallback
1231 |. daddiu CARG3, BASE, 8
1232 | call_intern lj_tab_get // (lua_State *L, GCtab *t, cTValue *key)
1233 |. move CARG1, L
1234 | b ->fff_restv
1235 |. ld CARG1, 0(CRET1)
1236 |
1237 |//-- Base library: conversions ------------------------------------------
1238 |
1239 |.ffunc tonumber
1240 | // Only handles the number case inline (without a base argument).
1241 | ld CARG1, 0(BASE)
1242 | xori AT, NARGS8:RC, 8 // Exactly one number argument.
1243 | gettp TMP1, CARG1
1244 | sltu TMP0, TISNUM, TMP1
1245 | or AT, AT, TMP0
1246 | bnez AT, ->fff_fallback
1247 |. nop
1248 | b ->fff_restv
1249 |. nop
1250 |
1251 |.ffunc_1 tostring
1252 | // Only handles the string or number case inline.
1253 | gettp TMP0, CARG1
1254 | daddiu AT, TMP0, -LJ_TSTR
1255 | // A __tostring method in the string base metatable is ignored.
1256 | beqz AT, ->fff_restv // String key?
1257 | // Handle numbers inline, unless a number base metatable is present.
1258 |. ld TMP1, DISPATCH_GL(gcroot[GCROOT_BASEMT_NUM])(DISPATCH)
1259 | sltu TMP0, TISNUM, TMP0
1260 | or TMP0, TMP0, TMP1
1261 | bnez TMP0, ->fff_fallback
1262 |. sd BASE, L->base // Add frame since C call can throw.
1263 | ffgccheck
1264 |. sd PC, SAVE_PC // Redundant (but a defined value).
1265 | load_got lj_strfmt_number
1266 | move CARG1, L
1267 | call_intern lj_strfmt_number // (lua_State *L, cTValue *o)
1268 |. move CARG2, BASE
1269 | // Returns GCstr *.
1270 | li AT, LJ_TSTR
1271 | settp CRET1, AT
1272 | b ->fff_restv
1273 |. move CARG1, CRET1
1274 |
1275 |//-- Base library: iterators -------------------------------------------
1276 |
1277 |.ffunc_1 next
1278 | checktp CARG2, CARG1, -LJ_TTAB, ->fff_fallback
1279 | daddu TMP2, BASE, NARGS8:RC
1280 | sd TISNIL, 0(TMP2) // Set missing 2nd arg to nil.
1281 | ld PC, FRAME_PC(BASE)
1282 | load_got lj_tab_next
1283 | sd BASE, L->base // Add frame since C call can throw.
1284 | sd BASE, L->top // Dummy frame length is ok.
1285 | daddiu CARG3, BASE, 8
1286 | sd PC, SAVE_PC
1287 | call_intern lj_tab_next // (lua_State *L, GCtab *t, TValue *key)
1288 |. move CARG1, L
1289 | // Returns 0 at end of traversal.
1290 | beqz CRET1, ->fff_restv // End of traversal: return nil.
1291 |. move CARG1, TISNIL
1292 | ld TMP0, 8(BASE)
1293 | daddiu RA, BASE, -16
1294 | ld TMP2, 16(BASE)
1295 | sd TMP0, 0(RA)
1296 | sd TMP2, 8(RA)
1297 | b ->fff_res
1298 |. li RD, (2+1)*8
1299 |
1300 |.ffunc_1 pairs
1301 | checktp TAB:TMP1, CARG1, -LJ_TTAB, ->fff_fallback
1302 | ld PC, FRAME_PC(BASE)
1303#if LJ_52
1304 | ld TAB:TMP2, TAB:TMP1->metatable
1305 | ld TMP0, CFUNC:RB->upvalue[0]
1306 | bnez TAB:TMP2, ->fff_fallback
1307#else
1308 | ld TMP0, CFUNC:RB->upvalue[0]
1309#endif
1310 |. daddiu RA, BASE, -16
1311 | sd TISNIL, 0(BASE)
1312 | sd CARG1, -8(BASE)
1313 | sd TMP0, 0(RA)
1314 | b ->fff_res
1315 |. li RD, (3+1)*8
1316 |
1317 |.ffunc_2 ipairs_aux
1318 | checktab CARG1, ->fff_fallback
1319 | checkint CARG2, ->fff_fallback
1320 |. lw TMP0, TAB:CARG1->asize
1321 | ld TMP1, TAB:CARG1->array
1322 | ld PC, FRAME_PC(BASE)
1323 | sextw TMP2, CARG2
1324 | addiu TMP2, TMP2, 1
1325 | sltu AT, TMP2, TMP0
1326 | daddiu RA, BASE, -16
1327 | zextw TMP0, TMP2
1328 | settp TMP0, TISNUM
1329 | beqz AT, >2 // Not in array part?
1330 |. sd TMP0, 0(RA)
1331 | dsll TMP3, TMP2, 3
1332 | daddu TMP3, TMP1, TMP3
1333 | ld TMP1, 0(TMP3)
1334 |1:
1335 | beq TMP1, TISNIL, ->fff_res // End of iteration, return 0 results.
1336 |. li RD, (0+1)*8
1337 | sd TMP1, -8(BASE)
1338 | b ->fff_res
1339 |. li RD, (2+1)*8
1340 |2: // Check for empty hash part first. Otherwise call C function.
1341 | lw TMP0, TAB:CARG1->hmask
1342 | load_got lj_tab_getinth
1343 | beqz TMP0, ->fff_res
1344 |. li RD, (0+1)*8
1345 | call_intern lj_tab_getinth // (GCtab *t, int32_t key)
1346 |. move CARG2, TMP2
1347 | // Returns cTValue * or NULL.
1348 | beqz CRET1, ->fff_res
1349 |. li RD, (0+1)*8
1350 | b <1
1351 |. ld TMP1, 0(CRET1)
1352 |
1353 |.ffunc_1 ipairs
1354 | checktp TAB:TMP1, CARG1, -LJ_TTAB, ->fff_fallback
1355 | ld PC, FRAME_PC(BASE)
1356#if LJ_52
1357 | ld TAB:TMP2, TAB:TMP1->metatable
1358 | ld CFUNC:TMP0, CFUNC:RB->upvalue[0]
1359 | bnez TAB:TMP2, ->fff_fallback
1360#else
1361 | ld TMP0, CFUNC:RB->upvalue[0]
1362#endif
1363 | daddiu RA, BASE, -16
1364 | dsll AT, TISNUM, 47
1365 | sd CARG1, -8(BASE)
1366 | sd AT, 0(BASE)
1367 | sd CFUNC:TMP0, 0(RA)
1368 | b ->fff_res
1369 |. li RD, (3+1)*8
1370 |
1371 |//-- Base library: catch errors ----------------------------------------
1372 |
1373 |.ffunc pcall
1374 | daddiu NARGS8:RC, NARGS8:RC, -8
1375 | lbu TMP3, DISPATCH_GL(hookmask)(DISPATCH)
1376 | bltz NARGS8:RC, ->fff_fallback
1377 |. move TMP2, BASE
1378 | daddiu BASE, BASE, 16
1379 | // Remember active hook before pcall.
1380 | srl TMP3, TMP3, HOOK_ACTIVE_SHIFT
1381 | andi TMP3, TMP3, 1
1382 | daddiu PC, TMP3, 16+FRAME_PCALL
1383 | beqz NARGS8:RC, ->vm_call_dispatch
1384 |1:
1385 |. daddu TMP0, BASE, NARGS8:RC
1386 |2:
1387 | ld TMP1, -16(TMP0)
1388 | sd TMP1, -8(TMP0)
1389 | daddiu TMP0, TMP0, -8
1390 | bne TMP0, BASE, <2
1391 |. nop
1392 | b ->vm_call_dispatch
1393 |. nop
1394 |
1395 |.ffunc xpcall
1396 | daddiu NARGS8:RC, NARGS8:RC, -16
1397 | ld CARG1, 0(BASE)
1398 | ld CARG2, 8(BASE)
1399 | bltz NARGS8:RC, ->fff_fallback
1400 |. lbu TMP1, DISPATCH_GL(hookmask)(DISPATCH)
1401 | gettp AT, CARG2
1402 | daddiu AT, AT, -LJ_TFUNC
1403 | bnez AT, ->fff_fallback // Traceback must be a function.
1404 |. move TMP2, BASE
1405 | daddiu BASE, BASE, 24
1406 | // Remember active hook before pcall.
1407 | srl TMP3, TMP3, HOOK_ACTIVE_SHIFT
1408 | sd CARG2, 0(TMP2) // Swap function and traceback.
1409 | andi TMP3, TMP3, 1
1410 | sd CARG1, 8(TMP2)
1411 | beqz NARGS8:RC, ->vm_call_dispatch
1412 |. daddiu PC, TMP3, 24+FRAME_PCALL
1413 | b <1
1414 |. nop
1415 |
1416 |//-- Coroutine library --------------------------------------------------
1417 |
1418 |.macro coroutine_resume_wrap, resume
1419 |.if resume
1420 |.ffunc_1 coroutine_resume
1421 | checktp CARG1, CARG1, -LJ_TTHREAD, ->fff_fallback
1422 |.else
1423 |.ffunc coroutine_wrap_aux
1424 | ld L:CARG1, CFUNC:RB->upvalue[0].gcr
1425 | cleartp L:CARG1
1426 |.endif
1427 | lbu TMP0, L:CARG1->status
1428 | ld TMP1, L:CARG1->cframe
1429 | ld CARG2, L:CARG1->top
1430 | ld TMP2, L:CARG1->base
1431 | addiu AT, TMP0, -LUA_YIELD
1432 | daddu CARG3, CARG2, TMP0
1433 | daddiu TMP3, CARG2, 8
1434 | bgtz AT, ->fff_fallback // st > LUA_YIELD?
1435 |. movn CARG2, TMP3, AT
1436 | xor TMP2, TMP2, CARG3
1437 | bnez TMP1, ->fff_fallback // cframe != 0?
1438 |. or AT, TMP2, TMP0
1439 | ld TMP0, L:CARG1->maxstack
1440 | beqz AT, ->fff_fallback // base == top && st == 0?
1441 |. ld PC, FRAME_PC(BASE)
1442 | daddu TMP2, CARG2, NARGS8:RC
1443 | sltu AT, TMP0, TMP2
1444 | bnez AT, ->fff_fallback // Stack overflow?
1445 |. sd PC, SAVE_PC
1446 | sd BASE, L->base
1447 |1:
1448 |.if resume
1449 | daddiu BASE, BASE, 8 // Keep resumed thread in stack for GC.
1450 | daddiu NARGS8:RC, NARGS8:RC, -8
1451 | daddiu TMP2, TMP2, -8
1452 |.endif
1453 | sd TMP2, L:CARG1->top
1454 | daddu TMP1, BASE, NARGS8:RC
1455 | move CARG3, CARG2
1456 | sd BASE, L->top
1457 |2: // Move args to coroutine.
1458 | ld CRET1, 0(BASE)
1459 | sltu AT, BASE, TMP1
1460 | beqz AT, >3
1461 |. daddiu BASE, BASE, 8
1462 | sd CRET1, 0(CARG3)
1463 | b <2
1464 |. daddiu CARG3, CARG3, 8
1465 |3:
1466 | bal ->vm_resume // (lua_State *L, TValue *base, 0, 0)
1467 |. move L:RA, L:CARG1
1468 | // Returns thread status.
1469 |4:
1470 | ld TMP2, L:RA->base
1471 | sltiu AT, CRET1, LUA_YIELD+1
1472 | ld TMP3, L:RA->top
1473 | li_vmstate INTERP
1474 | ld BASE, L->base
1475 | sd L, DISPATCH_GL(cur_L)(DISPATCH)
1476 | st_vmstate
1477 | beqz AT, >8
1478 |. dsubu RD, TMP3, TMP2
1479 | ld TMP0, L->maxstack
1480 | beqz RD, >6 // No results?
1481 |. daddu TMP1, BASE, RD
1482 | sltu AT, TMP0, TMP1
1483 | bnez AT, >9 // Need to grow stack?
1484 |. daddu TMP3, TMP2, RD
1485 | sd TMP2, L:RA->top // Clear coroutine stack.
1486 | move TMP1, BASE
1487 |5: // Move results from coroutine.
1488 | ld CRET1, 0(TMP2)
1489 | daddiu TMP2, TMP2, 8
1490 | sltu AT, TMP2, TMP3
1491 | sd CRET1, 0(TMP1)
1492 | bnez AT, <5
1493 |. daddiu TMP1, TMP1, 8
1494 |6:
1495 | andi TMP0, PC, FRAME_TYPE
1496 |.if resume
1497 | mov_true TMP1
1498 | daddiu RA, BASE, -8
1499 | sd TMP1, -8(BASE) // Prepend true to results.
1500 | daddiu RD, RD, 16
1501 |.else
1502 | move RA, BASE
1503 | daddiu RD, RD, 8
1504 |.endif
1505 |7:
1506 | sd PC, SAVE_PC
1507 | beqz TMP0, ->BC_RET_Z
1508 |. move MULTRES, RD
1509 | b ->vm_return
1510 |. nop
1511 |
1512 |8: // Coroutine returned with error (at co->top-1).
1513 |.if resume
1514 | daddiu TMP3, TMP3, -8
1515 | mov_false TMP1
1516 | ld CRET1, 0(TMP3)
1517 | sd TMP3, L:RA->top // Remove error from coroutine stack.
1518 | li RD, (2+1)*8
1519 | sd TMP1, -8(BASE) // Prepend false to results.
1520 | daddiu RA, BASE, -8
1521 | sd CRET1, 0(BASE) // Copy error message.
1522 | b <7
1523 |. andi TMP0, PC, FRAME_TYPE
1524 |.else
1525 | load_got lj_ffh_coroutine_wrap_err
1526 | move CARG2, L:RA
1527 | call_intern lj_ffh_coroutine_wrap_err // (lua_State *L, lua_State *co)
1528 |. move CARG1, L
1529 |.endif
1530 |
1531 |9: // Handle stack expansion on return from yield.
1532 | load_got lj_state_growstack
1533 | srl CARG2, RD, 3
1534 | call_intern lj_state_growstack // (lua_State *L, int n)
1535 |. move CARG1, L
1536 | b <4
1537 |. li CRET1, 0
1538 |.endmacro
1539 |
1540 | coroutine_resume_wrap 1 // coroutine.resume
1541 | coroutine_resume_wrap 0 // coroutine.wrap
1542 |
1543 |.ffunc coroutine_yield
1544 | ld TMP0, L->cframe
1545 | daddu TMP1, BASE, NARGS8:RC
1546 | sd BASE, L->base
1547 | andi TMP0, TMP0, CFRAME_RESUME
1548 | sd TMP1, L->top
1549 | beqz TMP0, ->fff_fallback
1550 |. li CRET1, LUA_YIELD
1551 | sd r0, L->cframe
1552 | b ->vm_leave_unw
1553 |. sb CRET1, L->status
1554 |
1555 |//-- Math library -------------------------------------------------------
1556 |
1557 |.ffunc_1 math_abs
1558 | gettp CARG2, CARG1
1559 | daddiu AT, CARG2, -LJ_TISNUM
1560 | bnez AT, >1
1561 |. sextw TMP1, CARG1
1562 | sra TMP0, TMP1, 31 // Extract sign.
1563 | xor TMP1, TMP1, TMP0
1564 | dsubu CARG1, TMP1, TMP0
1565 | dsll TMP3, CARG1, 32
1566 | bgez TMP3, ->fff_restv
1567 |. settp CARG1, TISNUM
1568 | li CARG1, 0x41e0 // 2^31 as a double.
1569 | b ->fff_restv
1570 |. dsll CARG1, CARG1, 48
1571 |1:
1572 | sltiu AT, CARG2, LJ_TISNUM
1573 | beqz AT, ->fff_fallback
1574 |. dextm CARG1, CARG1, 0, 30
1575 |// fallthrough
1576 |
1577 |->fff_restv:
1578 | // CARG1 = TValue result.
1579 | ld PC, FRAME_PC(BASE)
1580 | daddiu RA, BASE, -16
1581 | sd CARG1, -16(BASE)
1582 |->fff_res1:
1583 | // RA = results, PC = return.
1584 | li RD, (1+1)*8
1585 |->fff_res:
1586 | // RA = results, RD = (nresults+1)*8, PC = return.
1587 | andi TMP0, PC, FRAME_TYPE
1588 | bnez TMP0, ->vm_return
1589 |. move MULTRES, RD
1590 | lw INS, -4(PC)
1591 | decode_RB8a RB, INS
1592 | decode_RB8b RB
1593 |5:
1594 | sltu AT, RD, RB
1595 | bnez AT, >6 // More results expected?
1596 |. decode_RA8a TMP0, INS
1597 | decode_RA8b TMP0
1598 | ins_next1
1599 | // Adjust BASE. KBASE is assumed to be set for the calling frame.
1600 | dsubu BASE, RA, TMP0
1601 | ins_next2
1602 |
1603 |6: // Fill up results with nil.
1604 | daddu TMP1, RA, RD
1605 | daddiu RD, RD, 8
1606 | b <5
1607 |. sd TISNIL, -8(TMP1)
1608 |
1609 |.macro math_extern, func
1610 | .ffunc_n math_ .. func
1611 | load_got func
1612 | call_extern
1613 |. nop
1614 | b ->fff_resn
1615 |. nop
1616 |.endmacro
1617 |
1618 |.macro math_extern2, func
1619 | .ffunc_nn math_ .. func
1620 |. load_got func
1621 | call_extern
1622 |. nop
1623 | b ->fff_resn
1624 |. nop
1625 |.endmacro
1626 |
1627 |// TODO: Return integer type if result is integer (own sf implementation).
1628 |.macro math_round, func
1629 |->ff_math_ .. func:
1630 | ld CARG1, 0(BASE)
1631 | beqz NARGS8:RC, ->fff_fallback
1632 |. gettp TMP0, CARG1
1633 | beq TMP0, TISNUM, ->fff_restv
1634 |. sltu AT, TMP0, TISNUM
1635 | beqz AT, ->fff_fallback
1636 |.if FPU
1637 |. ldc1 FARG1, 0(BASE)
1638 | bal ->vm_ .. func
1639 |. nop
1640 |.else
1641 |. load_got func
1642 | call_extern
1643 |. nop
1644 |.endif
1645 | b ->fff_resn
1646 |. nop
1647 |.endmacro
1648 |
1649 | math_round floor
1650 | math_round ceil
1651 |
1652 |.ffunc math_log
1653 | li AT, 8
1654 | bne NARGS8:RC, AT, ->fff_fallback // Exactly 1 argument.
1655 |. ld CARG1, 0(BASE)
1656 | checknum CARG1, ->fff_fallback
1657 |. load_got log
1658 |.if FPU
1659 | call_extern
1660 |. ldc1 FARG1, 0(BASE)
1661 |.else
1662 | call_extern
1663 |. nop
1664 |.endif
1665 | b ->fff_resn
1666 |. nop
1667 |
1668 | math_extern log10
1669 | math_extern exp
1670 | math_extern sin
1671 | math_extern cos
1672 | math_extern tan
1673 | math_extern asin
1674 | math_extern acos
1675 | math_extern atan
1676 | math_extern sinh
1677 | math_extern cosh
1678 | math_extern tanh
1679 | math_extern2 pow
1680 | math_extern2 atan2
1681 | math_extern2 fmod
1682 |
1683 |.if FPU
1684 |.ffunc_n math_sqrt
1685 |. sqrt.d FRET1, FARG1
1686 |// fallthrough to ->fff_resn
1687 |.else
1688 | math_extern sqrt
1689 |.endif
1690 |
1691 |->fff_resn:
1692 | ld PC, FRAME_PC(BASE)
1693 | daddiu RA, BASE, -16
1694 | b ->fff_res1
1695 |.if FPU
1696 |. sdc1 FRET1, 0(RA)
1697 |.else
1698 |. sd CRET1, 0(RA)
1699 |.endif
1700 |
1701 |
1702 |.ffunc_2 math_ldexp
1703 | checknum CARG1, ->fff_fallback
1704 | checkint CARG2, ->fff_fallback
1705 |. load_got ldexp
1706 | .FPU ldc1 FARG1, 0(BASE)
1707 | call_extern
1708 |. lw CARG2, 8+LO(BASE)
1709 | b ->fff_resn
1710 |. nop
1711 |
1712 |.ffunc_n math_frexp
1713 | load_got frexp
1714 | ld PC, FRAME_PC(BASE)
1715 | call_extern
1716 |. daddiu CARG2, DISPATCH, DISPATCH_GL(tmptv)
1717 | lw TMP1, DISPATCH_GL(tmptv)(DISPATCH)
1718 | daddiu RA, BASE, -16
1719 |.if FPU
1720 | mtc1 TMP1, FARG2
1721 | sdc1 FRET1, 0(RA)
1722 | cvt.d.w FARG2, FARG2
1723 | sdc1 FARG2, 8(RA)
1724 |.else
1725 | sd CRET1, 0(RA)
1726 | zextw TMP1, TMP1
1727 | settp TMP1, TISNUM
1728 | sd TMP1, 8(RA)
1729 |.endif
1730 | b ->fff_res
1731 |. li RD, (2+1)*8
1732 |
1733 |.ffunc_n math_modf
1734 | load_got modf
1735 | ld PC, FRAME_PC(BASE)
1736 | call_extern
1737 |. daddiu CARG2, BASE, -16
1738 | daddiu RA, BASE, -16
1739 |.if FPU
1740 | sdc1 FRET1, -8(BASE)
1741 |.else
1742 | sd CRET1, -8(BASE)
1743 |.endif
1744 | b ->fff_res
1745 |. li RD, (2+1)*8
1746 |
1747 |.macro math_minmax, name, intins, fpins
1748 | .ffunc_1 name
1749 | daddu TMP3, BASE, NARGS8:RC
1750 | checkint CARG1, >5
1751 |. daddiu TMP2, BASE, 8
1752 |1: // Handle integers.
1753 | beq TMP2, TMP3, ->fff_restv
1754 |. ld CARG2, 0(TMP2)
1755 | checkint CARG2, >3
1756 |. sextw CARG1, CARG1
1757 | lw CARG2, LO(TMP2)
1758 |. slt AT, CARG1, CARG2
1759 | intins CARG1, CARG2, AT
1760 | daddiu TMP2, TMP2, 8
1761 | zextw CARG1, CARG1
1762 | b <1
1763 |. settp CARG1, TISNUM
1764 |
1765 |3: // Convert intermediate result to number and continue with number loop.
1766 | checknum CARG2, ->fff_fallback
1767 |.if FPU
1768 |. mtc1 CARG1, FRET1
1769 | cvt.d.w FRET1, FRET1
1770 | b >7
1771 |. ldc1 FARG1, 0(TMP2)
1772 |.else
1773 |. nop
1774 | bal ->vm_sfi2d_1
1775 |. nop
1776 | b >7
1777 |. nop
1778 |.endif
1779 |
1780 |5:
1781 | .FPU ldc1 FRET1, 0(BASE)
1782 | checknum CARG1, ->fff_fallback
1783 |6: // Handle numbers.
1784 |. ld CARG2, 0(TMP2)
1785 | beq TMP2, TMP3, ->fff_resn
1786 |.if FPU
1787 | ldc1 FARG1, 0(TMP2)
1788 |.else
1789 | move CRET1, CARG1
1790 |.endif
1791 | checknum CARG2, >8
1792 |. nop
1793 |7:
1794 |.if FPU
1795 | c.olt.d FRET1, FARG1
1796 | fpins FRET1, FARG1
1797 |.else
1798 | bal ->vm_sfcmpolt
1799 |. nop
1800 | intins CARG1, CARG2, CRET1
1801 |.endif
1802 | b <6
1803 |. daddiu TMP2, TMP2, 8
1804 |
1805 |8: // Convert integer to number and continue with number loop.
1806 | checkint CARG2, ->fff_fallback
1807 |.if FPU
1808 |. lwc1 FARG1, LO(TMP2)
1809 | b <7
1810 |. cvt.d.w FARG1, FARG1
1811 |.else
1812 |. lw CARG2, LO(TMP2)
1813 | bal ->vm_sfi2d_2
1814 |. nop
1815 | b <7
1816 |. nop
1817 |.endif
1818 |
1819 |.endmacro
1820 |
1821 | math_minmax math_min, movz, movf.d
1822 | math_minmax math_max, movn, movt.d
1823 |
1824 |//-- String library -----------------------------------------------------
1825 |
1826 |.ffunc string_byte // Only handle the 1-arg case here.
1827 | ld CARG1, 0(BASE)
1828 | gettp TMP0, CARG1
1829 | xori AT, NARGS8:RC, 8
1830 | daddiu TMP0, TMP0, -LJ_TSTR
1831 | or AT, AT, TMP0
1832 | bnez AT, ->fff_fallback // Need exactly 1 string argument.
1833 |. cleartp STR:CARG1
1834 | lw TMP0, STR:CARG1->len
1835 | daddiu RA, BASE, -16
1836 | ld PC, FRAME_PC(BASE)
1837 | sltu RD, r0, TMP0
1838 | lbu TMP1, STR:CARG1[1] // Access is always ok (NUL at end).
1839 | addiu RD, RD, 1
1840 | sll RD, RD, 3 // RD = ((str->len != 0)+1)*8
1841 | settp TMP1, TISNUM
1842 | b ->fff_res
1843 |. sd TMP1, 0(RA)
1844 |
1845 |.ffunc string_char // Only handle the 1-arg case here.
1846 | ffgccheck
1847 |. nop
1848 | ld CARG1, 0(BASE)
1849 | gettp TMP0, CARG1
1850 | xori AT, NARGS8:RC, 8 // Exactly 1 argument.
1851 | daddiu TMP0, TMP0, -LJ_TISNUM // Integer.
1852 | li TMP1, 255
1853 | sextw CARG1, CARG1
1854 | or AT, AT, TMP0
1855 | sltu TMP1, TMP1, CARG1 // !(255 < n).
1856 | or AT, AT, TMP1
1857 | bnez AT, ->fff_fallback
1858 |. li CARG3, 1
1859 | daddiu CARG2, sp, TMPD_OFS
1860 | sb CARG1, TMPD
1861 |->fff_newstr:
1862 | load_got lj_str_new
1863 | sd BASE, L->base
1864 | sd PC, SAVE_PC
1865 | call_intern lj_str_new // (lua_State *L, char *str, size_t l)
1866 |. move CARG1, L
1867 | // Returns GCstr *.
1868 | ld BASE, L->base
1869 |->fff_resstr:
1870 | li AT, LJ_TSTR
1871 | settp CRET1, AT
1872 | b ->fff_restv
1873 |. move CARG1, CRET1
1874 |
1875 |.ffunc string_sub
1876 | ffgccheck
1877 |. nop
1878 | addiu AT, NARGS8:RC, -16
1879 | ld TMP0, 0(BASE)
1880 | bltz AT, ->fff_fallback
1881 |. gettp TMP3, TMP0
1882 | cleartp STR:CARG1, TMP0
1883 | ld CARG2, 8(BASE)
1884 | beqz AT, >1
1885 |. li CARG4, -1
1886 | ld CARG3, 16(BASE)
1887 | checkint CARG3, ->fff_fallback
1888 |. sextw CARG4, CARG3
1889 |1:
1890 | checkint CARG2, ->fff_fallback
1891 |. li AT, LJ_TSTR
1892 | bne TMP3, AT, ->fff_fallback
1893 |. sextw CARG3, CARG2
1894 | lw CARG2, STR:CARG1->len
1895 | // STR:CARG1 = str, CARG2 = str->len, CARG3 = start, CARG4 = end
1896 | slt AT, CARG4, r0
1897 | addiu TMP0, CARG2, 1
1898 | addu TMP1, CARG4, TMP0
1899 | slt TMP3, CARG3, r0
1900 | movn CARG4, TMP1, AT // if (end < 0) end += len+1
1901 | addu TMP1, CARG3, TMP0
1902 | movn CARG3, TMP1, TMP3 // if (start < 0) start += len+1
1903 | li TMP2, 1
1904 | slt AT, CARG4, r0
1905 | slt TMP3, r0, CARG3
1906 | movn CARG4, r0, AT // if (end < 0) end = 0
1907 | movz CARG3, TMP2, TMP3 // if (start < 1) start = 1
1908 | slt AT, CARG2, CARG4
1909 | movn CARG4, CARG2, AT // if (end > len) end = len
1910 | daddu CARG2, STR:CARG1, CARG3
1911 | subu CARG3, CARG4, CARG3 // len = end - start
1912 | daddiu CARG2, CARG2, sizeof(GCstr)-1
1913 | bgez CARG3, ->fff_newstr
1914 |. addiu CARG3, CARG3, 1 // len++
1915 |->fff_emptystr: // Return empty string.
1916 | li AT, LJ_TSTR
1917 | daddiu STR:CARG1, DISPATCH, DISPATCH_GL(strempty)
1918 | b ->fff_restv
1919 |. settp CARG1, AT
1920 |
1921 |.macro ffstring_op, name
1922 | .ffunc string_ .. name
1923 | ffgccheck
1924 |. nop
1925 | beqz NARGS8:RC, ->fff_fallback
1926 |. ld CARG2, 0(BASE)
1927 | checkstr STR:CARG2, ->fff_fallback
1928 | daddiu SBUF:CARG1, DISPATCH, DISPATCH_GL(tmpbuf)
1929 | load_got lj_buf_putstr_ .. name
1930 | ld TMP0, SBUF:CARG1->b
1931 | sd L, SBUF:CARG1->L
1932 | sd BASE, L->base
1933 | sd TMP0, SBUF:CARG1->p
1934 | call_intern extern lj_buf_putstr_ .. name
1935 |. sd PC, SAVE_PC
1936 | load_got lj_buf_tostr
1937 | call_intern lj_buf_tostr
1938 |. move SBUF:CARG1, SBUF:CRET1
1939 | b ->fff_resstr
1940 |. ld BASE, L->base
1941 |.endmacro
1942 |
1943 |ffstring_op reverse
1944 |ffstring_op lower
1945 |ffstring_op upper
1946 |
1947 |//-- Bit library --------------------------------------------------------
1948 |
1949 |->vm_tobit_fb:
1950 | beqz TMP1, ->fff_fallback
1951 |.if FPU
1952 |. ldc1 FARG1, 0(BASE)
1953 | add.d FARG1, FARG1, TOBIT
1954 | mfc1 CRET1, FARG1
1955 | jr ra
1956 |. zextw CRET1, CRET1
1957 |.else
1958 |// FP number to bit conversion for soft-float.
1959 |->vm_tobit:
1960 | dsll TMP0, CARG1, 1
1961 | li CARG3, 1076
1962 | dsrl AT, TMP0, 53
1963 | dsubu CARG3, CARG3, AT
1964 | sltiu AT, CARG3, 54
1965 | beqz AT, >1
1966 |. dextm TMP0, TMP0, 0, 20
1967 | dinsu TMP0, AT, 21, 21
1968 | slt AT, CARG1, r0
1969 | dsrlv CRET1, TMP0, CARG3
1970 | dsubu TMP0, r0, CRET1
1971 | movn CRET1, TMP0, AT
1972 | jr ra
1973 |. zextw CRET1, CRET1
1974 |1:
1975 | jr ra
1976 |. move CRET1, r0
1977 |.endif
1978 |
1979 |.macro .ffunc_bit, name
1980 | .ffunc_1 bit_..name
1981 | gettp TMP0, CARG1
1982 | beq TMP0, TISNUM, >6
1983 |. zextw CRET1, CARG1
1984 | bal ->vm_tobit_fb
1985 |. sltiu TMP1, TMP0, LJ_TISNUM
1986 |6:
1987 |.endmacro
1988 |
1989 |.macro .ffunc_bit_op, name, bins
1990 | .ffunc_bit name
1991 | daddiu TMP2, BASE, 8
1992 | daddu TMP3, BASE, NARGS8:RC
1993 |1:
1994 | beq TMP2, TMP3, ->fff_resi
1995 |. ld CARG1, 0(TMP2)
1996 | gettp TMP0, CARG1
1997 |.if FPU
1998 | bne TMP0, TISNUM, >2
1999 |. daddiu TMP2, TMP2, 8
2000 | zextw CARG1, CARG1
2001 | b <1
2002 |. bins CRET1, CRET1, CARG1
2003 |2:
2004 | ldc1 FARG1, -8(TMP2)
2005 | sltiu AT, TMP0, LJ_TISNUM
2006 | beqz AT, ->fff_fallback
2007 |. add.d FARG1, FARG1, TOBIT
2008 | mfc1 CARG1, FARG1
2009 | zextw CARG1, CARG1
2010 | b <1
2011 |. bins CRET1, CRET1, CARG1
2012 |.else
2013 | beq TMP0, TISNUM, >2
2014 |. move CRET2, CRET1
2015 | bal ->vm_tobit_fb
2016 |. sltiu TMP1, TMP0, LJ_TISNUM
2017 | move CARG1, CRET2
2018 |2:
2019 | zextw CARG1, CARG1
2020 | bins CRET1, CRET1, CARG1
2021 | b <1
2022 |. daddiu TMP2, TMP2, 8
2023 |.endif
2024 |.endmacro
2025 |
2026 |.ffunc_bit_op band, and
2027 |.ffunc_bit_op bor, or
2028 |.ffunc_bit_op bxor, xor
2029 |
2030 |.ffunc_bit bswap
2031 | dsrl TMP0, CRET1, 8
2032 | dsrl TMP1, CRET1, 24
2033 | andi TMP2, TMP0, 0xff00
2034 | dins TMP1, CRET1, 24, 31
2035 | dins TMP2, TMP0, 16, 23
2036 | b ->fff_resi
2037 |. or CRET1, TMP1, TMP2
2038 |
2039 |.ffunc_bit bnot
2040 | not CRET1, CRET1
2041 | b ->fff_resi
2042 |. zextw CRET1, CRET1
2043 |
2044 |.macro .ffunc_bit_sh, name, shins, shmod
2045 | .ffunc_2 bit_..name
2046 | gettp TMP0, CARG1
2047 | beq TMP0, TISNUM, >1
2048 |. nop
2049 | bal ->vm_tobit_fb
2050 |. sltiu TMP1, TMP0, LJ_TISNUM
2051 | move CARG1, CRET1
2052 |1:
2053 | gettp TMP0, CARG2
2054 | bne TMP0, TISNUM, ->fff_fallback
2055 |. zextw CARG2, CARG2
2056 | sextw CARG1, CARG1
2057 |.if shmod == 1
2058 | negu CARG2, CARG2
2059 |.endif
2060 | shins CRET1, CARG1, CARG2
2061 | b ->fff_resi
2062 |. zextw CRET1, CRET1
2063 |.endmacro
2064 |
2065 |.ffunc_bit_sh lshift, sllv, 0
2066 |.ffunc_bit_sh rshift, srlv, 0
2067 |.ffunc_bit_sh arshift, srav, 0
2068 |.ffunc_bit_sh rol, rotrv, 1
2069 |.ffunc_bit_sh ror, rotrv, 0
2070 |
2071 |.ffunc_bit tobit
2072 |->fff_resi:
2073 | ld PC, FRAME_PC(BASE)
2074 | daddiu RA, BASE, -16
2075 | settp CRET1, TISNUM
2076 | b ->fff_res1
2077 |. sd CRET1, -16(BASE)
2078 |
2079 |//-----------------------------------------------------------------------
2080 |->fff_fallback: // Call fast function fallback handler.
2081 | // BASE = new base, RB = CFUNC, RC = nargs*8
2082 | ld TMP3, CFUNC:RB->f
2083 | daddu TMP1, BASE, NARGS8:RC
2084 | ld PC, FRAME_PC(BASE) // Fallback may overwrite PC.
2085 | daddiu TMP0, TMP1, 8*LUA_MINSTACK
2086 | ld TMP2, L->maxstack
2087 | sd PC, SAVE_PC // Redundant (but a defined value).
2088 | sltu AT, TMP2, TMP0
2089 | sd BASE, L->base
2090 | sd TMP1, L->top
2091 | bnez AT, >5 // Need to grow stack.
2092 |. move CFUNCADDR, TMP3
2093 | jalr TMP3 // (lua_State *L)
2094 |. move CARG1, L
2095 | // Either throws an error, or recovers and returns -1, 0 or nresults+1.
2096 | ld BASE, L->base
2097 | sll RD, CRET1, 3
2098 | bgtz CRET1, ->fff_res // Returned nresults+1?
2099 |. daddiu RA, BASE, -16
2100 |1: // Returned 0 or -1: retry fast path.
2101 | ld LFUNC:RB, FRAME_FUNC(BASE)
2102 | ld TMP0, L->top
2103 | cleartp LFUNC:RB
2104 | bnez CRET1, ->vm_call_tail // Returned -1?
2105 |. dsubu NARGS8:RC, TMP0, BASE
2106 | ins_callt // Returned 0: retry fast path.
2107 |
2108 |// Reconstruct previous base for vmeta_call during tailcall.
2109 |->vm_call_tail:
2110 | andi TMP0, PC, FRAME_TYPE
2111 | li AT, -4
2112 | bnez TMP0, >3
2113 |. and TMP1, PC, AT
2114 | lbu TMP1, OFS_RA(PC)
2115 | sll TMP1, TMP1, 3
2116 | addiu TMP1, TMP1, 16
2117 |3:
2118 | b ->vm_call_dispatch // Resolve again for tailcall.
2119 |. dsubu TMP2, BASE, TMP1
2120 |
2121 |5: // Grow stack for fallback handler.
2122 | load_got lj_state_growstack
2123 | li CARG2, LUA_MINSTACK
2124 | call_intern lj_state_growstack // (lua_State *L, int n)
2125 |. move CARG1, L
2126 | ld BASE, L->base
2127 | b <1
2128 |. li CRET1, 0 // Force retry.
2129 |
2130 |->fff_gcstep: // Call GC step function.
2131 | // BASE = new base, RC = nargs*8
2132 | move MULTRES, ra
2133 | load_got lj_gc_step
2134 | sd BASE, L->base
2135 | daddu TMP0, BASE, NARGS8:RC
2136 | sd PC, SAVE_PC // Redundant (but a defined value).
2137 | sd TMP0, L->top
2138 | call_intern lj_gc_step // (lua_State *L)
2139 |. move CARG1, L
2140 | ld BASE, L->base
2141 | move ra, MULTRES
2142 | ld TMP0, L->top
2143 | ld CFUNC:RB, FRAME_FUNC(BASE)
2144 | cleartp CFUNC:RB
2145 | jr ra
2146 |. dsubu NARGS8:RC, TMP0, BASE
2147 |
2148 |//-----------------------------------------------------------------------
2149 |//-- Special dispatch targets -------------------------------------------
2150 |//-----------------------------------------------------------------------
2151 |
2152 |->vm_record: // Dispatch target for recording phase.
2153 | NYI
2154 |
2155 |->vm_rethook: // Dispatch target for return hooks.
2156 | lbu TMP3, DISPATCH_GL(hookmask)(DISPATCH)
2157 | andi AT, TMP3, HOOK_ACTIVE // Hook already active?
2158 | beqz AT, >1
2159 |5: // Re-dispatch to static ins.
2160 |. ld AT, GG_DISP2STATIC(TMP0) // Assumes TMP0 holds DISPATCH+OP*4.
2161 | jr AT
2162 |. nop
2163 |
2164 |->vm_inshook: // Dispatch target for instr/line hooks.
2165 | lbu TMP3, DISPATCH_GL(hookmask)(DISPATCH)
2166 | lw TMP2, DISPATCH_GL(hookcount)(DISPATCH)
2167 | andi AT, TMP3, HOOK_ACTIVE // Hook already active?
2168 | bnez AT, <5
2169 |. andi AT, TMP3, LUA_MASKLINE|LUA_MASKCOUNT
2170 | beqz AT, <5
2171 |. addiu TMP2, TMP2, -1
2172 | beqz TMP2, >1
2173 |. sw TMP2, DISPATCH_GL(hookcount)(DISPATCH)
2174 | andi AT, TMP3, LUA_MASKLINE
2175 | beqz AT, <5
2176 |1:
2177 |. load_got lj_dispatch_ins
2178 | sw MULTRES, SAVE_MULTRES
2179 | move CARG2, PC
2180 | sd BASE, L->base
2181 | // SAVE_PC must hold the _previous_ PC. The callee updates it with PC.
2182 | call_intern lj_dispatch_ins // (lua_State *L, const BCIns *pc)
2183 |. move CARG1, L
2184 |3:
2185 | ld BASE, L->base
2186 |4: // Re-dispatch to static ins.
2187 | lw INS, -4(PC)
2188 | decode_OP8a TMP1, INS
2189 | decode_OP8b TMP1
2190 | daddu TMP0, DISPATCH, TMP1
2191 | decode_RD8a RD, INS
2192 | ld AT, GG_DISP2STATIC(TMP0)
2193 | decode_RA8a RA, INS
2194 | decode_RD8b RD
2195 | jr AT
2196 | decode_RA8b RA
2197 |
2198 |->cont_hook: // Continue from hook yield.
2199 | daddiu PC, PC, 4
2200 | b <4
2201 |. lw MULTRES, -24+LO(RB) // Restore MULTRES for *M ins.
2202 |
2203 |->vm_hotloop: // Hot loop counter underflow.
2204 | NYI
2205 |
2206 |->vm_callhook: // Dispatch target for call hooks.
2207 |.if JIT
2208 | b >1
2209 |.endif
2210 |. move CARG2, PC
2211 |
2212 |->vm_hotcall: // Hot call counter underflow.
2213 |.if JIT
2214 | ori CARG2, PC, 1
2215 |1:
2216 |.endif
2217 | load_got lj_dispatch_call
2218 | daddu TMP0, BASE, RC
2219 | sd PC, SAVE_PC
2220 | sd BASE, L->base
2221 | dsubu RA, RA, BASE
2222 | sd TMP0, L->top
2223 | call_intern lj_dispatch_call // (lua_State *L, const BCIns *pc)
2224 |. move CARG1, L
2225 | // Returns ASMFunction.
2226 | ld BASE, L->base
2227 | ld TMP0, L->top
2228 | sd r0, SAVE_PC // Invalidate for subsequent line hook.
2229 | dsubu NARGS8:RC, TMP0, BASE
2230 | daddu RA, BASE, RA
2231 | ld LFUNC:RB, FRAME_FUNC(BASE)
2232 | cleartp LFUNC:RB
2233 | jr CRET1
2234 |. lw INS, -4(PC)
2235 |
2236 |->cont_stitch: // Trace stitching.
2237 |.if JIT
2238 | NYI
2239 |.endif
2240 |
2241 |->vm_profhook: // Dispatch target for profiler hook.
2242#if LJ_HASPROFILE
2243 | load_got lj_dispatch_profile
2244 | sw MULTRES, SAVE_MULTRES
2245 | move CARG2, PC
2246 | sw BASE, L->base
2247 | call_intern lj_dispatch_profile // (lua_State *L, const BCIns *pc)
2248 |. move CARG1, L
2249 | // HOOK_PROFILE is off again, so re-dispatch to dynamic instruction.
2250 | daddiu PC, PC, -4
2251 | b ->cont_nop
2252 |. lw BASE, L->base
2253#endif
2254 |
2255 |//-----------------------------------------------------------------------
2256 |//-- Trace exit handler -------------------------------------------------
2257 |//-----------------------------------------------------------------------
2258 |
2259 |.macro savex_, a, b
2260 |.if FPU
2261 | sdc1 f..a, a*8(sp)
2262 | sd r..a, 32*8+a*8(sp)
2263 | sd r..b, 32*8+b*8(sp)
2264 |.else
2265 | sd r..a, a*8(sp)
2266 | sd r..b, b*8(sp)
2267 |.endif
2268 |.endmacro
2269 |
2270 |->vm_exit_handler:
2271 |.if JIT
2272 | NYI
2273 |.endif
2274 |->vm_exit_interp:
2275 |.if JIT
2276 | NYI
2277 |.endif
2278 |
2279 |//-----------------------------------------------------------------------
2280 |//-- Math helper functions ----------------------------------------------
2281 |//-----------------------------------------------------------------------
2282 |
2283 |// Hard-float round to integer.
2284 |// Modifies AT, TMP0, FRET1, FRET2, f4. Keeps all others incl. FARG1.
2285 |.macro vm_round_hf, func
2286 | lui TMP0, 0x4330 // Hiword of 2^52 (double).
2287 | dsll TMP0, TMP0, 32
2288 | dmtc1 TMP0, f4
2289 | abs.d FRET2, FARG1 // |x|
2290 | dmfc1 AT, FARG1
2291 | c.olt.d 0, FRET2, f4
2292 | add.d FRET1, FRET2, f4 // (|x| + 2^52) - 2^52
2293 | bc1f 0, >1 // Truncate only if |x| < 2^52.
2294 |. sub.d FRET1, FRET1, f4
2295 | slt AT, AT, r0
2296 |.if "func" == "ceil"
2297 | lui TMP0, 0xbff0 // Hiword of -1 (double). Preserves -0.
2298 |.else
2299 | lui TMP0, 0x3ff0 // Hiword of +1 (double).
2300 |.endif
2301 |.if "func" == "trunc"
2302 | dsll TMP0, TMP0, 32
2303 | dmtc1 TMP0, f4
2304 | c.olt.d 0, FRET2, FRET1 // |x| < result?
2305 | sub.d FRET2, FRET1, f4
2306 | movt.d FRET1, FRET2, 0 // If yes, subtract +1.
2307 | neg.d FRET2, FRET1
2308 | jr ra
2309 |. movn.d FRET1, FRET2, AT // Merge sign bit back in.
2310 |.else
2311 | neg.d FRET2, FRET1
2312 | dsll TMP0, TMP0, 32
2313 | dmtc1 TMP0, f4
2314 | movn.d FRET1, FRET2, AT // Merge sign bit back in.
2315 |.if "func" == "ceil"
2316 | c.olt.d 0, FRET1, FARG1 // x > result?
2317 |.else
2318 | c.olt.d 0, FARG1, FRET1 // x < result?
2319 |.endif
2320 | sub.d FRET2, FRET1, f4 // If yes, subtract +-1.
2321 | jr ra
2322 |. movt.d FRET1, FRET2, 0
2323 |.endif
2324 |1:
2325 | jr ra
2326 |. mov.d FRET1, FARG1
2327 |.endmacro
2328 |
2329 |.macro vm_round, func
2330 |.if FPU
2331 | vm_round_hf, func
2332 |.endif
2333 |.endmacro
2334 |
2335 |->vm_floor:
2336 | vm_round floor
2337 |->vm_ceil:
2338 | vm_round ceil
2339 |->vm_trunc:
2340 |.if JIT
2341 | vm_round trunc
2342 |.endif
2343 |
2344 |// Soft-float integer to number conversion.
2345 |.macro sfi2d, ARG
2346 |.if not FPU
2347 | beqz ARG, >9 // Handle zero first.
2348 |. sra TMP0, ARG, 31
2349 | xor TMP1, ARG, TMP0
2350 | dsubu TMP1, TMP1, TMP0 // Absolute value in TMP1.
2351 | dclz ARG, TMP1
2352 | addiu ARG, ARG, -11
2353 | li AT, 0x3ff+63-11-1
2354 | dsllv TMP1, TMP1, ARG // Align mantissa left with leading 1.
2355 | subu ARG, AT, ARG // Exponent - 1.
2356 | ins ARG, TMP0, 11, 11 // Sign | Exponent.
2357 | dsll ARG, ARG, 52 // Align left.
2358 | jr ra
2359 |. daddu ARG, ARG, TMP1 // Add mantissa, increment exponent.
2360 |9:
2361 | jr ra
2362 |. nop
2363 |.endif
2364 |.endmacro
2365 |
2366 |// Input CARG1. Output: CARG1. Temporaries: AT, TMP0, TMP1.
2367 |->vm_sfi2d_1:
2368 | sfi2d CARG1
2369 |
2370 |// Input CARG2. Output: CARG2. Temporaries: AT, TMP0, TMP1.
2371 |->vm_sfi2d_2:
2372 | sfi2d CARG2
2373 |
2374 |// Soft-float comparison. Equivalent to c.eq.d.
2375 |// Input: CARG*. Output: CRET1. Temporaries: AT, TMP0, TMP1.
2376 |->vm_sfcmpeq:
2377 |.if not FPU
2378 | dsll AT, CARG1, 1
2379 | dsll TMP0, CARG2, 1
2380 | or TMP1, AT, TMP0
2381 | beqz TMP1, >8 // Both args +-0: return 1.
2382 |. lui TMP1, 0xffe0
2383 | dsll TMP1, TMP1, 32
2384 | sltu AT, TMP1, AT
2385 | sltu TMP0, TMP1, TMP0
2386 | or TMP1, AT, TMP0
2387 | bnez TMP1, >9 // Either arg is NaN: return 0;
2388 |. xor AT, CARG1, CARG2
2389 | jr ra
2390 |. sltiu CRET1, AT, 1 // Same values: return 1.
2391 |8:
2392 | jr ra
2393 |. li CRET1, 1
2394 |9:
2395 | jr ra
2396 |. li CRET1, 0
2397 |.endif
2398 |
2399 |// Soft-float comparison. Equivalent to c.ult.d and c.olt.d.
2400 |// Input: CARG1, CARG2. Output: CRET1. Temporaries: AT, TMP0, TMP1, CRET2.
2401 |->vm_sfcmpult:
2402 |.if not FPU
2403 | b >1
2404 |. li CRET2, 1
2405 |.endif
2406 |
2407 |->vm_sfcmpolt:
2408 |.if not FPU
2409 | li CRET2, 0
2410 |1:
2411 | dsll AT, CARG1, 1
2412 | dsll TMP0, CARG2, 1
2413 | or TMP1, AT, TMP0
2414 | beqz TMP1, >8 // Both args +-0: return 0.
2415 |. lui TMP1, 0xffe0
2416 | dsll TMP1, TMP1, 32
2417 | sltu AT, TMP1, AT
2418 | sltu TMP0, TMP1, TMP0
2419 | or TMP1, AT, TMP0
2420 | bnez TMP1, >9 // Either arg is NaN: return 0 or 1;
2421 |. and AT, CARG1, CARG2
2422 | bltz AT, >5 // Both args negative?
2423 |. nop
2424 | jr ra
2425 |. slt CRET1, CARG1, CARG2
2426 |5: // Swap conditions if both operands are negative.
2427 | jr ra
2428 |. slt CRET1, CARG2, CARG1
2429 |8:
2430 | jr ra
2431 |. nop
2432 |9:
2433 | jr ra
2434 |. move CRET1, CRET2
2435 |.endif
2436 |
2437 |// Soft-float comparison. Equivalent to c.ole.d a, b or c.ole.d b, a.
2438 |// Input: CARG1, CARG2, TMP3. Output: CRET1. Temporaries: AT, TMP0, TMP1.
2439 |->vm_sfcmpolex:
2440 |.if not FPU
2441 | dsll AT, CARG1, 1
2442 | dsll TMP0, CARG2, 1
2443 | or TMP1, AT, TMP0
2444 | beqz TMP1, >8 // Both args +-0: return 1.
2445 |. lui TMP1, 0xffe0
2446 | dsll TMP1, TMP1, 32
2447 | sltu AT, TMP1, AT
2448 | sltu TMP0, TMP1, TMP0
2449 | or TMP1, AT, TMP0
2450 | bnez TMP1, >9 // Either arg is NaN: return 0;
2451 |. and AT, CARG1, CARG2
2452 | xor AT, AT, TMP3
2453 | bltz AT, >5 // Both args negative?
2454 |. nop
2455 | jr ra
2456 |. slt CRET1, CARG2, CARG1
2457 |5: // Swap conditions if both operands are negative.
2458 | jr ra
2459 |. slt CRET1, CARG1, CARG2
2460 |8:
2461 | jr ra
2462 |. li CRET1, 1
2463 |9:
2464 | jr ra
2465 |. li CRET1, 0
2466 |.endif
2467 |
2468 |//-----------------------------------------------------------------------
2469 |//-- Miscellaneous functions --------------------------------------------
2470 |//-----------------------------------------------------------------------
2471 |
2472 |//-----------------------------------------------------------------------
2473 |//-- FFI helper functions -----------------------------------------------
2474 |//-----------------------------------------------------------------------
2475 |
2476 |// Handler for callback functions. Callback slot number in r1, g in r2.
2477 |->vm_ffi_callback:
2478 |.if FFI
2479 |.type CTSTATE, CTState, PC
2480 | saveregs
2481 | ld CTSTATE, GL:r2->ctype_state
2482 | daddiu DISPATCH, r2, GG_G2DISP
2483 | load_got lj_ccallback_enter
2484 | sw r1, CTSTATE->cb.slot
2485 | sd CARG1, CTSTATE->cb.gpr[0]
2486 | .FPU sdc1 FARG1, CTSTATE->cb.fpr[0]
2487 | sd CARG2, CTSTATE->cb.gpr[1]
2488 | .FPU sdc1 FARG2, CTSTATE->cb.fpr[1]
2489 | sd CARG3, CTSTATE->cb.gpr[2]
2490 | .FPU sdc1 FARG3, CTSTATE->cb.fpr[2]
2491 | sd CARG4, CTSTATE->cb.gpr[3]
2492 | .FPU sdc1 FARG4, CTSTATE->cb.fpr[3]
2493 | sd CARG5, CTSTATE->cb.gpr[4]
2494 | .FPU sdc1 FARG5, CTSTATE->cb.fpr[4]
2495 | sd CARG6, CTSTATE->cb.gpr[5]
2496 | .FPU sdc1 FARG6, CTSTATE->cb.fpr[5]
2497 | sd CARG7, CTSTATE->cb.gpr[6]
2498 | .FPU sdc1 FARG7, CTSTATE->cb.fpr[6]
2499 | sd CARG8, CTSTATE->cb.gpr[7]
2500 | .FPU sdc1 FARG8, CTSTATE->cb.fpr[7]
2501 | daddiu TMP0, sp, CFRAME_SPACE
2502 | sd TMP0, CTSTATE->cb.stack
2503 | sd r0, SAVE_PC // Any value outside of bytecode is ok.
2504 | move CARG2, sp
2505 | call_intern lj_ccallback_enter // (CTState *cts, void *cf)
2506 |. move CARG1, CTSTATE
2507 | // Returns lua_State *.
2508 | ld BASE, L:CRET1->base
2509 | ld RC, L:CRET1->top
2510 | move L, CRET1
2511 | .FPU lui TMP3, 0x59c0 // TOBIT = 2^52 + 2^51 (float).
2512 | ld LFUNC:RB, FRAME_FUNC(BASE)
2513 | .FPU mtc1 TMP3, TOBIT
2514 | li TISNIL, LJ_TNIL
2515 | li TISNUM, LJ_TISNUM
2516 | li_vmstate INTERP
2517 | subu RC, RC, BASE
2518 | cleartp LFUNC:RB
2519 | st_vmstate
2520 | .FPU cvt.d.s TOBIT, TOBIT
2521 | ins_callt
2522 |.endif
2523 |
2524 |->cont_ffi_callback: // Return from FFI callback.
2525 |.if FFI
2526 | load_got lj_ccallback_leave
2527 | ld CTSTATE, DISPATCH_GL(ctype_state)(DISPATCH)
2528 | sd BASE, L->base
2529 | sd RB, L->top
2530 | sd L, CTSTATE->L
2531 | move CARG2, RA
2532 | call_intern lj_ccallback_leave // (CTState *cts, TValue *o)
2533 |. move CARG1, CTSTATE
2534 | .FPU ldc1 FRET1, CTSTATE->cb.fpr[0]
2535 | ld CRET1, CTSTATE->cb.gpr[0]
2536 | .FPU ldc1 FRET2, CTSTATE->cb.fpr[1]
2537 | b ->vm_leave_unw
2538 |. ld CRET2, CTSTATE->cb.gpr[1]
2539 |.endif
2540 |
2541 |->vm_ffi_call: // Call C function via FFI.
2542 | // Caveat: needs special frame unwinding, see below.
2543 |.if FFI
2544 | .type CCSTATE, CCallState, CARG1
2545 | lw TMP1, CCSTATE->spadj
2546 | lbu CARG2, CCSTATE->nsp
2547 | move TMP2, sp
2548 | dsubu sp, sp, TMP1
2549 | sd ra, -8(TMP2)
2550 | sll CARG2, CARG2, 3
2551 | sd r16, -16(TMP2)
2552 | sd CCSTATE, -24(TMP2)
2553 | move r16, TMP2
2554 | daddiu TMP1, CCSTATE, offsetof(CCallState, stack)
2555 | move TMP2, sp
2556 | beqz CARG2, >2
2557 |. daddu TMP3, TMP1, CARG2
2558 |1:
2559 | ld TMP0, 0(TMP1)
2560 | daddiu TMP1, TMP1, 8
2561 | sltu AT, TMP1, TMP3
2562 | sd TMP0, 0(TMP2)
2563 | bnez AT, <1
2564 |. daddiu TMP2, TMP2, 8
2565 |2:
2566 | ld CFUNCADDR, CCSTATE->func
2567 | .FPU ldc1 FARG1, CCSTATE->gpr[0]
2568 | ld CARG2, CCSTATE->gpr[1]
2569 | .FPU ldc1 FARG2, CCSTATE->gpr[1]
2570 | ld CARG3, CCSTATE->gpr[2]
2571 | .FPU ldc1 FARG3, CCSTATE->gpr[2]
2572 | ld CARG4, CCSTATE->gpr[3]
2573 | .FPU ldc1 FARG4, CCSTATE->gpr[3]
2574 | ld CARG5, CCSTATE->gpr[4]
2575 | .FPU ldc1 FARG5, CCSTATE->gpr[4]
2576 | ld CARG6, CCSTATE->gpr[5]
2577 | .FPU ldc1 FARG6, CCSTATE->gpr[5]
2578 | ld CARG7, CCSTATE->gpr[6]
2579 | .FPU ldc1 FARG7, CCSTATE->gpr[6]
2580 | ld CARG8, CCSTATE->gpr[7]
2581 | .FPU ldc1 FARG8, CCSTATE->gpr[7]
2582 | jalr CFUNCADDR
2583 |. ld CARG1, CCSTATE->gpr[0] // Do this last, since CCSTATE is CARG1.
2584 | ld CCSTATE:TMP1, -24(r16)
2585 | ld TMP2, -16(r16)
2586 | ld ra, -8(r16)
2587 | sd CRET1, CCSTATE:TMP1->gpr[0]
2588 | sd CRET2, CCSTATE:TMP1->gpr[1]
2589 |.if FPU
2590 | sdc1 FRET1, CCSTATE:TMP1->fpr[0]
2591 | sdc1 FRET2, CCSTATE:TMP1->fpr[1]
2592 |.else
2593 | sd CARG1, CCSTATE:TMP1->gpr[2] // 2nd FP struct field for soft-float.
2594 |.endif
2595 | move sp, r16
2596 | jr ra
2597 |. move r16, TMP2
2598 |.endif
2599 |// Note: vm_ffi_call must be the last function in this object file!
2600 |
2601 |//-----------------------------------------------------------------------
2602}
2603
2604/* Generate the code for a single instruction. */
2605static void build_ins(BuildCtx *ctx, BCOp op, int defop)
2606{
2607 int vk = 0;
2608 |=>defop:
2609
2610 switch (op) {
2611
2612 /* -- Comparison ops ---------------------------------------------------- */
2613
2614 /* Remember: all ops branch for a true comparison, fall through otherwise. */
2615
2616 case BC_ISLT: case BC_ISGE: case BC_ISLE: case BC_ISGT:
2617 | // RA = src1*8, RD = src2*8, JMP with RD = target
2618 |.macro bc_comp, FRA, FRD, ARGRA, ARGRD, movop, fmovop, fcomp, sfcomp
2619 | daddu RA, BASE, RA
2620 | daddu RD, BASE, RD
2621 | ld ARGRA, 0(RA)
2622 | ld ARGRD, 0(RD)
2623 | lhu TMP2, OFS_RD(PC)
2624 | gettp CARG3, ARGRA
2625 | gettp CARG4, ARGRD
2626 | bne CARG3, TISNUM, >2
2627 |. daddiu PC, PC, 4
2628 | bne CARG4, TISNUM, >5
2629 |. decode_RD4b TMP2
2630 | sextw ARGRA, ARGRA
2631 | sextw ARGRD, ARGRD
2632 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2633 | slt AT, CARG1, CARG2
2634 | addu TMP2, TMP2, TMP3
2635 | movop TMP2, r0, AT
2636 |1:
2637 | daddu PC, PC, TMP2
2638 | ins_next
2639 |
2640 |2: // RA is not an integer.
2641 | sltiu AT, CARG3, LJ_TISNUM
2642 | beqz AT, ->vmeta_comp
2643 |. lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2644 | sltiu AT, CARG4, LJ_TISNUM
2645 | beqz AT, >4
2646 |. decode_RD4b TMP2
2647 |.if FPU
2648 | ldc1 FRA, 0(RA)
2649 | ldc1 FRD, 0(RD)
2650 |.endif
2651 |3: // RA and RD are both numbers.
2652 |.if FPU
2653 | fcomp f20, f22
2654 | addu TMP2, TMP2, TMP3
2655 | b <1
2656 |. fmovop TMP2, r0
2657 |.else
2658 | bal sfcomp
2659 |. addu TMP2, TMP2, TMP3
2660 | b <1
2661 |. movop TMP2, r0, CRET1
2662 |.endif
2663 |
2664 |4: // RA is a number, RD is not a number.
2665 | bne CARG4, TISNUM, ->vmeta_comp
2666 | // RA is a number, RD is an integer. Convert RD to a number.
2667 |.if FPU
2668 |. lwc1 FRD, LO(RD)
2669 | ldc1 FRA, 0(RA)
2670 | b <3
2671 |. cvt.d.w FRD, FRD
2672 |.else
2673 |.if "ARGRD" == "CARG1"
2674 |. sextw CARG1, CARG1
2675 | bal ->vm_sfi2d_1
2676 |. nop
2677 |.else
2678 |. sextw CARG2, CARG2
2679 | bal ->vm_sfi2d_2
2680 |. nop
2681 |.endif
2682 | b <3
2683 |. nop
2684 |.endif
2685 |
2686 |5: // RA is an integer, RD is not an integer
2687 | sltiu AT, CARG4, LJ_TISNUM
2688 | beqz AT, ->vmeta_comp
2689 |. lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2690 | // RA is an integer, RD is a number. Convert RA to a number.
2691 |.if FPU
2692 | lwc1 FRA, LO(RA)
2693 | ldc1 FRD, 0(RD)
2694 | b <3
2695 | cvt.d.w FRA, FRA
2696 |.else
2697 |.if "ARGRA" == "CARG1"
2698 | bal ->vm_sfi2d_1
2699 |. sextw CARG1, CARG1
2700 |.else
2701 | bal ->vm_sfi2d_2
2702 |. sextw CARG2, CARG2
2703 |.endif
2704 | b <3
2705 |. nop
2706 |.endif
2707 |.endmacro
2708 |
2709 if (op == BC_ISLT) {
2710 | bc_comp f20, f22, CARG1, CARG2, movz, movf, c.olt.d, ->vm_sfcmpolt
2711 } else if (op == BC_ISGE) {
2712 | bc_comp f20, f22, CARG1, CARG2, movn, movt, c.olt.d, ->vm_sfcmpolt
2713 } else if (op == BC_ISLE) {
2714 | bc_comp f22, f20, CARG2, CARG1, movn, movt, c.ult.d, ->vm_sfcmpult
2715 } else {
2716 | bc_comp f22, f20, CARG2, CARG1, movz, movf, c.ult.d, ->vm_sfcmpult
2717 }
2718 break;
2719
2720 case BC_ISEQV: case BC_ISNEV:
2721 vk = op == BC_ISEQV;
2722 | // RA = src1*8, RD = src2*8, JMP with RD = target
2723 | daddu RA, BASE, RA
2724 | daddiu PC, PC, 4
2725 | daddu RD, BASE, RD
2726 | ld CARG1, 0(RA)
2727 | lhu TMP2, -4+OFS_RD(PC)
2728 | ld CARG2, 0(RD)
2729 | gettp CARG3, CARG1
2730 | gettp CARG4, CARG2
2731 | sltu AT, TISNUM, CARG3
2732 | sltu TMP1, TISNUM, CARG4
2733 | or AT, AT, TMP1
2734 if (vk) {
2735 | beqz AT, ->BC_ISEQN_Z
2736 } else {
2737 | beqz AT, ->BC_ISNEN_Z
2738 }
2739 | // Either or both types are not numbers.
2740 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2741 |.if FFI
2742 |. li AT, LJ_TCDATA
2743 | beq CARG3, AT, ->vmeta_equal_cd
2744 |.endif
2745 | decode_RD4b TMP2
2746 |.if FFI
2747 | beq CARG4, AT, ->vmeta_equal_cd
2748 |. nop
2749 |.endif
2750 | bne CARG1, CARG2, >2
2751 |. addu TMP2, TMP2, TMP3
2752 | // Tag and value are equal.
2753 if (vk) {
2754 |->BC_ISEQV_Z:
2755 | daddu PC, PC, TMP2
2756 }
2757 |1:
2758 | ins_next
2759 |
2760 |2: // Check if the tags are the same and it's a table or userdata.
2761 | xor AT, CARG3, CARG4 // Same type?
2762 | sltiu TMP0, CARG3, LJ_TISTABUD+1 // Table or userdata?
2763 | movn TMP0, r0, AT
2764 if (vk) {
2765 | beqz TMP0, <1
2766 } else {
2767 | beqz TMP0, ->BC_ISEQV_Z // Reuse code from opposite instruction.
2768 }
2769 | // Different tables or userdatas. Need to check __eq metamethod.
2770 | // Field metatable must be at same offset for GCtab and GCudata!
2771 |. cleartp TAB:TMP1, CARG1
2772 | ld TAB:TMP3, TAB:TMP1->metatable
2773 if (vk) {
2774 | beqz TAB:TMP3, <1 // No metatable?
2775 |. nop
2776 | lbu TMP3, TAB:TMP3->nomm
2777 | andi TMP3, TMP3, 1<<MM_eq
2778 | bnez TMP3, >1 // Or 'no __eq' flag set?
2779 } else {
2780 | beqz TAB:TMP3,->BC_ISEQV_Z // No metatable?
2781 |. nop
2782 | lbu TMP3, TAB:TMP3->nomm
2783 | andi TMP3, TMP3, 1<<MM_eq
2784 | bnez TMP3, ->BC_ISEQV_Z // Or 'no __eq' flag set?
2785 }
2786 |. nop
2787 | b ->vmeta_equal // Handle __eq metamethod.
2788 |. li TMP0, 1-vk // ne = 0 or 1.
2789 break;
2790
2791 case BC_ISEQS: case BC_ISNES:
2792 vk = op == BC_ISEQS;
2793 | // RA = src*8, RD = str_const*8 (~), JMP with RD = target
2794 | daddu RA, BASE, RA
2795 | daddiu PC, PC, 4
2796 | ld CARG1, 0(RA)
2797 | dsubu RD, KBASE, RD
2798 | lhu TMP2, -4+OFS_RD(PC)
2799 | ld CARG2, -8(RD) // KBASE-8-str_const*8
2800 |.if FFI
2801 | gettp TMP0, CARG1
2802 | li AT, LJ_TCDATA
2803 |.endif
2804 | li TMP1, LJ_TSTR
2805 | decode_RD4b TMP2
2806 |.if FFI
2807 | beq TMP0, AT, ->vmeta_equal_cd
2808 |.endif
2809 |. settp CARG2, TMP1
2810 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2811 | xor TMP1, CARG1, CARG2
2812 | addu TMP2, TMP2, TMP3
2813 if (vk) {
2814 | movn TMP2, r0, TMP1
2815 } else {
2816 | movz TMP2, r0, TMP1
2817 }
2818 | daddu PC, PC, TMP2
2819 | ins_next
2820 break;
2821
2822 case BC_ISEQN: case BC_ISNEN:
2823 vk = op == BC_ISEQN;
2824 | // RA = src*8, RD = num_const*8, JMP with RD = target
2825 | daddu RA, BASE, RA
2826 | daddu RD, KBASE, RD
2827 | ld CARG1, 0(RA)
2828 | ld CARG2, 0(RD)
2829 | lhu TMP2, OFS_RD(PC)
2830 | gettp CARG3, CARG1
2831 | gettp CARG4, CARG2
2832 | daddiu PC, PC, 4
2833 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2834 if (vk) {
2835 |->BC_ISEQN_Z:
2836 } else {
2837 |->BC_ISNEN_Z:
2838 }
2839 | bne CARG3, TISNUM, >3
2840 |. decode_RD4b TMP2
2841 | bne CARG4, TISNUM, >6
2842 |. addu TMP2, TMP2, TMP3
2843 | xor AT, CARG1, CARG2
2844 if (vk) {
2845 | movn TMP2, r0, AT
2846 |1:
2847 | daddu PC, PC, TMP2
2848 |2:
2849 } else {
2850 | movz TMP2, r0, AT
2851 |1:
2852 |2:
2853 | daddu PC, PC, TMP2
2854 }
2855 | ins_next
2856 |
2857 |3: // RA is not an integer.
2858 | sltu AT, CARG3, TISNUM
2859 |.if FFI
2860 | beqz AT, >8
2861 |.else
2862 | beqz AT, <2
2863 |.endif
2864 |. addu TMP2, TMP2, TMP3
2865 | sltu AT, CARG4, TISNUM
2866 |.if FPU
2867 | ldc1 f20, 0(RA)
2868 | ldc1 f22, 0(RD)
2869 |.endif
2870 | beqz AT, >5
2871 |. nop
2872 |4: // RA and RD are both numbers.
2873 |.if FPU
2874 | c.eq.d f20, f22
2875 | b <1
2876 if (vk) {
2877 |. movf TMP2, r0
2878 } else {
2879 |. movt TMP2, r0
2880 }
2881 |.else
2882 | bal ->vm_sfcmpeq
2883 |. nop
2884 | b <1
2885 if (vk) {
2886 |. movz TMP2, r0, CRET1
2887 } else {
2888 |. movn TMP2, r0, CRET1
2889 }
2890 |.endif
2891 |
2892 |5: // RA is a number, RD is not a number.
2893 |.if FFI
2894 | bne CARG4, TISNUM, >9
2895 |.else
2896 | bne CARG4, TISNUM, <2
2897 |.endif
2898 | // RA is a number, RD is an integer. Convert RD to a number.
2899 |.if FPU
2900 |. lwc1 f22, LO(RD)
2901 | b <4
2902 |. cvt.d.w f22, f22
2903 |.else
2904 |. sextw CARG2, CARG2
2905 | bal ->vm_sfi2d_2
2906 |. nop
2907 | b <4
2908 |. nop
2909 |.endif
2910 |
2911 |6: // RA is an integer, RD is not an integer
2912 | sltu AT, CARG4, TISNUM
2913 |.if FFI
2914 | beqz AT, >9
2915 |.else
2916 | beqz AT, <2
2917 |.endif
2918 | // RA is an integer, RD is a number. Convert RA to a number.
2919 |.if FPU
2920 |. lwc1 f20, LO(RA)
2921 | ldc1 f22, 0(RD)
2922 | b <4
2923 | cvt.d.w f20, f20
2924 |.else
2925 |. sextw CARG1, CARG1
2926 | bal ->vm_sfi2d_1
2927 |. nop
2928 | b <4
2929 |. nop
2930 |.endif
2931 |
2932 |.if FFI
2933 |8:
2934 | li AT, LJ_TCDATA
2935 | bne CARG3, AT, <2
2936 |. nop
2937 | b ->vmeta_equal_cd
2938 |. nop
2939 |9:
2940 | li AT, LJ_TCDATA
2941 | bne CARG4, AT, <2
2942 |. nop
2943 | b ->vmeta_equal_cd
2944 |. nop
2945 |.endif
2946 break;
2947
2948 case BC_ISEQP: case BC_ISNEP:
2949 vk = op == BC_ISEQP;
2950 | // RA = src*8, RD = primitive_type*8 (~), JMP with RD = target
2951 | daddu RA, BASE, RA
2952 | srl TMP1, RD, 3
2953 | ld TMP0, 0(RA)
2954 | lhu TMP2, OFS_RD(PC)
2955 | not TMP1, TMP1
2956 | gettp TMP0, TMP0
2957 | daddiu PC, PC, 4
2958 |.if FFI
2959 | li AT, LJ_TCDATA
2960 | beq TMP0, AT, ->vmeta_equal_cd
2961 |.endif
2962 |. xor TMP0, TMP0, TMP1
2963 | decode_RD4b TMP2
2964 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2965 | addu TMP2, TMP2, TMP3
2966 if (vk) {
2967 | movn TMP2, r0, TMP0
2968 } else {
2969 | movz TMP2, r0, TMP0
2970 }
2971 | daddu PC, PC, TMP2
2972 | ins_next
2973 break;
2974
2975 /* -- Unary test and copy ops ------------------------------------------- */
2976
2977 case BC_ISTC: case BC_ISFC: case BC_IST: case BC_ISF:
2978 | // RA = dst*8 or unused, RD = src*8, JMP with RD = target
2979 | daddu RD, BASE, RD
2980 | lhu TMP2, OFS_RD(PC)
2981 | ld TMP0, 0(RD)
2982 | daddiu PC, PC, 4
2983 | gettp TMP0, TMP0
2984 | sltiu TMP0, TMP0, LJ_TISTRUECOND
2985 if (op == BC_IST || op == BC_ISF) {
2986 | decode_RD4b TMP2
2987 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
2988 | addu TMP2, TMP2, TMP3
2989 if (op == BC_IST) {
2990 | movz TMP2, r0, TMP0
2991 } else {
2992 | movn TMP2, r0, TMP0
2993 }
2994 | daddu PC, PC, TMP2
2995 } else {
2996 | ld CRET1, 0(RD)
2997 if (op == BC_ISTC) {
2998 | beqz TMP0, >1
2999 } else {
3000 | bnez TMP0, >1
3001 }
3002 |. daddu RA, BASE, RA
3003 | decode_RD4b TMP2
3004 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
3005 | addu TMP2, TMP2, TMP3
3006 | sd CRET1, 0(RA)
3007 | daddu PC, PC, TMP2
3008 |1:
3009 }
3010 | ins_next
3011 break;
3012
3013 case BC_ISTYPE:
3014 | // RA = src*8, RD = -type*8
3015 | daddu TMP2, BASE, RA
3016 | srl TMP1, RD, 3
3017 | ld TMP0, 0(TMP2)
3018 | ins_next1
3019 | gettp TMP0, TMP0
3020 | daddu AT, TMP0, TMP1
3021 | bnez AT, ->vmeta_istype
3022 |. ins_next2
3023 break;
3024 case BC_ISNUM:
3025 | // RA = src*8, RD = -(TISNUM-1)*8
3026 | daddu TMP2, BASE, RA
3027 | ld TMP0, 0(TMP2)
3028 | ins_next1
3029 | checknum TMP0, ->vmeta_istype
3030 |. ins_next2
3031 break;
3032
3033 /* -- Unary ops --------------------------------------------------------- */
3034
3035 case BC_MOV:
3036 | // RA = dst*8, RD = src*8
3037 | daddu RD, BASE, RD
3038 | daddu RA, BASE, RA
3039 | ld CRET1, 0(RD)
3040 | ins_next1
3041 | sd CRET1, 0(RA)
3042 | ins_next2
3043 break;
3044 case BC_NOT:
3045 | // RA = dst*8, RD = src*8
3046 | daddu RD, BASE, RD
3047 | daddu RA, BASE, RA
3048 | ld TMP0, 0(RD)
3049 | li AT, LJ_TTRUE
3050 | gettp TMP0, TMP0
3051 | sltu TMP0, AT, TMP0
3052 | addiu TMP0, TMP0, 1
3053 | dsll TMP0, TMP0, 47
3054 | not TMP0, TMP0
3055 | ins_next1
3056 | sd TMP0, 0(RA)
3057 | ins_next2
3058 break;
3059 case BC_UNM:
3060 | // RA = dst*8, RD = src*8
3061 | daddu RB, BASE, RD
3062 | ld CARG1, 0(RB)
3063 | daddu RA, BASE, RA
3064 | gettp CARG3, CARG1
3065 | bne CARG3, TISNUM, >2
3066 |. lui TMP1, 0x8000
3067 | sextw CARG1, CARG1
3068 | beq CARG1, TMP1, ->vmeta_unm // Meta handler deals with -2^31.
3069 |. negu CARG1, CARG1
3070 | zextw CARG1, CARG1
3071 | settp CARG1, TISNUM
3072 |1:
3073 | ins_next1
3074 | sd CARG1, 0(RA)
3075 | ins_next2
3076 |2:
3077 | sltiu AT, CARG3, LJ_TISNUM
3078 | beqz AT, ->vmeta_unm
3079 |. dsll TMP1, TMP1, 32
3080 | b <1
3081 |. xor CARG1, CARG1, TMP1
3082 break;
3083 case BC_LEN:
3084 | // RA = dst*8, RD = src*8
3085 | daddu CARG2, BASE, RD
3086 | daddu RA, BASE, RA
3087 | ld TMP0, 0(CARG2)
3088 | gettp TMP1, TMP0
3089 | daddiu AT, TMP1, -LJ_TSTR
3090 | bnez AT, >2
3091 |. cleartp STR:CARG1, TMP0
3092 | lw CRET1, STR:CARG1->len
3093 |1:
3094 | settp CRET1, TISNUM
3095 | ins_next1
3096 | sd CRET1, 0(RA)
3097 | ins_next2
3098 |2:
3099 | daddiu AT, TMP1, -LJ_TTAB
3100 | bnez AT, ->vmeta_len
3101 |. nop
3102#if LJ_52
3103 | ld TAB:TMP2, TAB:CARG1->metatable
3104 | bnez TAB:TMP2, >9
3105 |. nop
3106 |3:
3107#endif
3108 |->BC_LEN_Z:
3109 | load_got lj_tab_len
3110 | call_intern lj_tab_len // (GCtab *t)
3111 |. nop
3112 | // Returns uint32_t (but less than 2^31).
3113 | b <1
3114 |. nop
3115#if LJ_52
3116 |9:
3117 | lbu TMP0, TAB:TMP2->nomm
3118 | andi TMP0, TMP0, 1<<MM_len
3119 | bnez TMP0, <3 // 'no __len' flag set: done.
3120 |. nop
3121 | b ->vmeta_len
3122 |. nop
3123#endif
3124 break;
3125
3126 /* -- Binary ops -------------------------------------------------------- */
3127
3128 |.macro fpmod, a, b, c
3129 | bal ->vm_floor // floor(b/c)
3130 |. div.d FARG1, b, c
3131 | mul.d a, FRET1, c
3132 | sub.d a, b, a // b - floor(b/c)*c
3133 |.endmacro
3134
3135 |.macro sfpmod
3136 | daddiu sp, sp, -16
3137 |
3138 | load_got __divdf3
3139 | sd CARG1, 0(sp)
3140 | call_extern
3141 |. sd CARG2, 8(sp)
3142 |
3143 | load_got floor
3144 | call_extern
3145 |. move CARG1, CRET1
3146 |
3147 | load_got __muldf3
3148 | move CARG1, CRET1
3149 | call_extern
3150 |. ld CARG2, 8(sp)
3151 |
3152 | load_got __subdf3
3153 | ld CARG1, 0(sp)
3154 | call_extern
3155 |. move CARG2, CRET1
3156 |
3157 | daddiu sp, sp, 16
3158 |.endmacro
3159
3160 |.macro ins_arithpre, label
3161 ||vk = ((int)op - BC_ADDVN) / (BC_ADDNV-BC_ADDVN);
3162 | // RA = dst*8, RB = src1*8, RC = src2*8 | num_const*8
3163 ||switch (vk) {
3164 ||case 0:
3165 | decode_RB8a RB, INS
3166 | decode_RB8b RB
3167 | decode_RDtoRC8 RC, RD
3168 | // RA = dst*8, RB = src1*8, RC = num_const*8
3169 | daddu RB, BASE, RB
3170 |.if "label" ~= "none"
3171 | b label
3172 |.endif
3173 |. daddu RC, KBASE, RC
3174 || break;
3175 ||case 1:
3176 | decode_RB8a RC, INS
3177 | decode_RB8b RC
3178 | decode_RDtoRC8 RB, RD
3179 | // RA = dst*8, RB = num_const*8, RC = src1*8
3180 | daddu RC, BASE, RC
3181 |.if "label" ~= "none"
3182 | b label
3183 |.endif
3184 |. daddu RB, KBASE, RB
3185 || break;
3186 ||default:
3187 | decode_RB8a RB, INS
3188 | decode_RB8b RB
3189 | decode_RDtoRC8 RC, RD
3190 | // RA = dst*8, RB = src1*8, RC = src2*8
3191 | daddu RB, BASE, RB
3192 |.if "label" ~= "none"
3193 | b label
3194 |.endif
3195 |. daddu RC, BASE, RC
3196 || break;
3197 ||}
3198 |.endmacro
3199 |
3200 |.macro ins_arith, intins, fpins, fpcall, label
3201 | ins_arithpre none
3202 |
3203 |.if "label" ~= "none"
3204 |label:
3205 |.endif
3206 |
3207 |// Used in 5.
3208 | ld CARG1, 0(RB)
3209 | ld CARG2, 0(RC)
3210 | gettp TMP0, CARG1
3211 | gettp TMP1, CARG2
3212 |
3213 |.if "intins" ~= "div"
3214 |
3215 | // Check for two integers.
3216 | sextw CARG3, CARG1
3217 | bne TMP0, TISNUM, >5
3218 |. sextw CARG4, CARG2
3219 | bne TMP1, TISNUM, >5
3220 |
3221 |.if "intins" == "addu"
3222 |. intins CRET1, CARG3, CARG4
3223 | xor TMP1, CRET1, CARG3 // ((y^a) & (y^b)) < 0: overflow.
3224 | xor TMP2, CRET1, CARG4
3225 | and TMP1, TMP1, TMP2
3226 | bltz TMP1, ->vmeta_arith
3227 |. daddu RA, BASE, RA
3228 |.elif "intins" == "subu"
3229 |. intins CRET1, CARG3, CARG4
3230 | xor TMP1, CRET1, CARG3 // ((y^a) & (a^b)) < 0: overflow.
3231 | xor TMP2, CARG3, CARG4
3232 | and TMP1, TMP1, TMP2
3233 | bltz TMP1, ->vmeta_arith
3234 |. daddu RA, BASE, RA
3235 |.elif "intins" == "mult"
3236 |. intins CARG3, CARG4
3237 | mflo CRET1
3238 | mfhi TMP2
3239 | sra TMP1, CRET1, 31
3240 | bne TMP1, TMP2, ->vmeta_arith
3241 |. daddu RA, BASE, RA
3242 |.else
3243 |. load_got lj_vm_modi
3244 | beqz CARG4, ->vmeta_arith
3245 |. daddu RA, BASE, RA
3246 | move CARG1, CARG3
3247 | call_extern
3248 |. move CARG2, CARG4
3249 |.endif
3250 |
3251 | zextw CRET1, CRET1
3252 | settp CRET1, TISNUM
3253 | ins_next1
3254 | sd CRET1, 0(RA)
3255 |3:
3256 | ins_next2
3257 |
3258 |.endif
3259 |
3260 |5: // Check for two numbers.
3261 | .FPU ldc1 f20, 0(RB)
3262 | sltu AT, TMP0, TISNUM
3263 | sltu TMP0, TMP1, TISNUM
3264 | .FPU ldc1 f22, 0(RC)
3265 | and AT, AT, TMP0
3266 | beqz AT, ->vmeta_arith
3267 |. daddu RA, BASE, RA
3268 |
3269 |.if FPU
3270 | fpins FRET1, f20, f22
3271 |.elif "fpcall" == "sfpmod"
3272 | sfpmod
3273 |.else
3274 | load_got fpcall
3275 | call_extern
3276 |. nop
3277 |.endif
3278 |
3279 | ins_next1
3280 |.if "intins" ~= "div"
3281 | b <3
3282 |.endif
3283 |.if FPU
3284 |. sdc1 FRET1, 0(RA)
3285 |.else
3286 |. sd CRET1, 0(RA)
3287 |.endif
3288 |.if "intins" == "div"
3289 | ins_next2
3290 |.endif
3291 |
3292 |.endmacro
3293
3294 case BC_ADDVN: case BC_ADDNV: case BC_ADDVV:
3295 | ins_arith addu, add.d, __adddf3, none
3296 break;
3297 case BC_SUBVN: case BC_SUBNV: case BC_SUBVV:
3298 | ins_arith subu, sub.d, __subdf3, none
3299 break;
3300 case BC_MULVN: case BC_MULNV: case BC_MULVV:
3301 | ins_arith mult, mul.d, __muldf3, none
3302 break;
3303 case BC_DIVVN:
3304 | ins_arith div, div.d, __divdf3, ->BC_DIVVN_Z
3305 break;
3306 case BC_DIVNV: case BC_DIVVV:
3307 | ins_arithpre ->BC_DIVVN_Z
3308 break;
3309 case BC_MODVN:
3310 | ins_arith modi, fpmod, sfpmod, ->BC_MODVN_Z
3311 break;
3312 case BC_MODNV: case BC_MODVV:
3313 | ins_arithpre ->BC_MODVN_Z
3314 break;
3315 case BC_POW:
3316 | ins_arithpre none
3317 | ld CARG1, 0(RB)
3318 | ld CARG2, 0(RC)
3319 | gettp TMP0, CARG1
3320 | gettp TMP1, CARG2
3321 | sltiu TMP0, TMP0, LJ_TISNUM
3322 | sltiu TMP1, TMP1, LJ_TISNUM
3323 | and AT, TMP0, TMP1
3324 | load_got pow
3325 | beqz AT, ->vmeta_arith
3326 |. daddu RA, BASE, RA
3327 |.if FPU
3328 | ldc1 FARG1, 0(RB)
3329 | ldc1 FARG2, 0(RC)
3330 |.endif
3331 | call_extern
3332 |. nop
3333 | ins_next1
3334 |.if FPU
3335 | sdc1 FRET1, 0(RA)
3336 |.else
3337 | sd CRET1, 0(RA)
3338 |.endif
3339 | ins_next2
3340 break;
3341
3342 case BC_CAT:
3343 | // RA = dst*8, RB = src_start*8, RC = src_end*8
3344 | decode_RB8a RB, INS
3345 | decode_RB8b RB
3346 | decode_RDtoRC8 RC, RD
3347 | dsubu CARG3, RC, RB
3348 | sd BASE, L->base
3349 | daddu CARG2, BASE, RC
3350 | move MULTRES, RB
3351 |->BC_CAT_Z:
3352 | load_got lj_meta_cat
3353 | srl CARG3, CARG3, 3
3354 | sd PC, SAVE_PC
3355 | call_intern lj_meta_cat // (lua_State *L, TValue *top, int left)
3356 |. move CARG1, L
3357 | // Returns NULL (finished) or TValue * (metamethod).
3358 | bnez CRET1, ->vmeta_binop
3359 |. ld BASE, L->base
3360 | daddu RB, BASE, MULTRES
3361 | ld CRET1, 0(RB)
3362 | daddu RA, BASE, RA
3363 | ins_next1
3364 | sd CRET1, 0(RA)
3365 | ins_next2
3366 break;
3367
3368 /* -- Constant ops ------------------------------------------------------ */
3369
3370 case BC_KSTR:
3371 | // RA = dst*8, RD = str_const*8 (~)
3372 | dsubu TMP1, KBASE, RD
3373 | ins_next1
3374 | li TMP2, LJ_TSTR
3375 | ld TMP0, -8(TMP1) // KBASE-8-str_const*8
3376 | daddu RA, BASE, RA
3377 | settp TMP0, TMP2
3378 | sd TMP0, 0(RA)
3379 | ins_next2
3380 break;
3381 case BC_KCDATA:
3382 |.if FFI
3383 | // RA = dst*8, RD = cdata_const*8 (~)
3384 | dsubu TMP1, KBASE, RD
3385 | ins_next1
3386 | ld TMP0, -8(TMP1) // KBASE-8-cdata_const*8
3387 | li TMP2, LJ_TCDATA
3388 | daddu RA, BASE, RA
3389 | settp TMP0, TMP2
3390 | sd TMP0, 0(RA)
3391 | ins_next2
3392 |.endif
3393 break;
3394 case BC_KSHORT:
3395 | // RA = dst*8, RD = int16_literal*8
3396 | sra RD, INS, 16
3397 | daddu RA, BASE, RA
3398 | zextw RD, RD
3399 | ins_next1
3400 | settp RD, TISNUM
3401 | sd RD, 0(RA)
3402 | ins_next2
3403 break;
3404 case BC_KNUM:
3405 | // RA = dst*8, RD = num_const*8
3406 | daddu RD, KBASE, RD
3407 | daddu RA, BASE, RA
3408 | ld CRET1, 0(RD)
3409 | ins_next1
3410 | sd CRET1, 0(RA)
3411 | ins_next2
3412 break;
3413 case BC_KPRI:
3414 | // RA = dst*8, RD = primitive_type*8 (~)
3415 | daddu RA, BASE, RA
3416 | dsll TMP0, RD, 44
3417 | not TMP0, TMP0
3418 | ins_next1
3419 | sd TMP0, 0(RA)
3420 | ins_next2
3421 break;
3422 case BC_KNIL:
3423 | // RA = base*8, RD = end*8
3424 | daddu RA, BASE, RA
3425 | sd TISNIL, 0(RA)
3426 | daddiu RA, RA, 8
3427 | daddu RD, BASE, RD
3428 |1:
3429 | sd TISNIL, 0(RA)
3430 | slt AT, RA, RD
3431 | bnez AT, <1
3432 |. daddiu RA, RA, 8
3433 | ins_next_
3434 break;
3435
3436 /* -- Upvalue and function ops ------------------------------------------ */
3437
3438 case BC_UGET:
3439 | // RA = dst*8, RD = uvnum*8
3440 | ld LFUNC:RB, FRAME_FUNC(BASE)
3441 | daddu RA, BASE, RA
3442 | cleartp LFUNC:RB
3443 | daddu RD, RD, LFUNC:RB
3444 | ld UPVAL:RB, LFUNC:RD->uvptr
3445 | ins_next1
3446 | ld TMP1, UPVAL:RB->v
3447 | ld CRET1, 0(TMP1)
3448 | sd CRET1, 0(RA)
3449 | ins_next2
3450 break;
3451 case BC_USETV:
3452 | // RA = uvnum*8, RD = src*8
3453 | ld LFUNC:RB, FRAME_FUNC(BASE)
3454 | daddu RD, BASE, RD
3455 | cleartp LFUNC:RB
3456 | daddu RA, RA, LFUNC:RB
3457 | ld UPVAL:RB, LFUNC:RA->uvptr
3458 | ld CRET1, 0(RD)
3459 | lbu TMP3, UPVAL:RB->marked
3460 | ld CARG2, UPVAL:RB->v
3461 | andi TMP3, TMP3, LJ_GC_BLACK // isblack(uv)
3462 | lbu TMP0, UPVAL:RB->closed
3463 | gettp TMP2, RD
3464 | sd CRET1, 0(CARG2)
3465 | li AT, LJ_GC_BLACK|1
3466 | or TMP3, TMP3, TMP0
3467 | beq TMP3, AT, >2 // Upvalue is closed and black?
3468 |. daddiu TMP2, TMP2, -(LJ_TNUMX+1)
3469 |1:
3470 | ins_next
3471 |
3472 |2: // Check if new value is collectable.
3473 | sltiu AT, TMP2, LJ_TISGCV - (LJ_TNUMX+1)
3474 | beqz AT, <1 // tvisgcv(v)
3475 |. cleartp GCOBJ:TMP1, RB
3476 | lbu TMP3, GCOBJ:TMP1->gch.marked
3477 | andi TMP3, TMP3, LJ_GC_WHITES // iswhite(v)
3478 | beqz TMP3, <1
3479 |. load_got lj_gc_barrieruv
3480 | // Crossed a write barrier. Move the barrier forward.
3481 | call_intern lj_gc_barrieruv // (global_State *g, TValue *tv)
3482 |. daddiu CARG1, DISPATCH, GG_DISP2G
3483 | b <1
3484 |. nop
3485 break;
3486 case BC_USETS:
3487 | // RA = uvnum*8, RD = str_const*8 (~)
3488 | ld LFUNC:RB, FRAME_FUNC(BASE)
3489 | dsubu TMP1, KBASE, RD
3490 | cleartp LFUNC:RB
3491 | daddu RA, RA, LFUNC:RB
3492 | ld UPVAL:RB, LFUNC:RA->uvptr
3493 | ld STR:TMP1, -8(TMP1) // KBASE-8-str_const*8
3494 | lbu TMP2, UPVAL:RB->marked
3495 | ld CARG2, UPVAL:RB->v
3496 | lbu TMP3, STR:TMP1->marked
3497 | andi AT, TMP2, LJ_GC_BLACK // isblack(uv)
3498 | lbu TMP2, UPVAL:RB->closed
3499 | li TMP0, LJ_TSTR
3500 | settp TMP1, TMP0
3501 | bnez AT, >2
3502 |. sd TMP1, 0(CARG2)
3503 |1:
3504 | ins_next
3505 |
3506 |2: // Check if string is white and ensure upvalue is closed.
3507 | beqz TMP2, <1
3508 |. andi AT, TMP3, LJ_GC_WHITES // iswhite(str)
3509 | beqz AT, <1
3510 |. load_got lj_gc_barrieruv
3511 | // Crossed a write barrier. Move the barrier forward.
3512 | call_intern lj_gc_barrieruv // (global_State *g, TValue *tv)
3513 |. daddiu CARG1, DISPATCH, GG_DISP2G
3514 | b <1
3515 |. nop
3516 break;
3517 case BC_USETN:
3518 | // RA = uvnum*8, RD = num_const*8
3519 | ld LFUNC:RB, FRAME_FUNC(BASE)
3520 | daddu RD, KBASE, RD
3521 | cleartp LFUNC:RB
3522 | daddu RA, RA, LFUNC:RB
3523 | ld UPVAL:RB, LFUNC:RA->uvptr
3524 | ld CRET1, 0(RD)
3525 | ld TMP1, UPVAL:RB->v
3526 | ins_next1
3527 | sd CRET1, 0(TMP1)
3528 | ins_next2
3529 break;
3530 case BC_USETP:
3531 | // RA = uvnum*8, RD = primitive_type*8 (~)
3532 | ld LFUNC:RB, FRAME_FUNC(BASE)
3533 | dsll TMP0, RD, 44
3534 | cleartp LFUNC:RB
3535 | daddu RA, RA, LFUNC:RB
3536 | not TMP0, TMP0
3537 | ld UPVAL:RB, LFUNC:RA->uvptr
3538 | ins_next1
3539 | ld TMP1, UPVAL:RB->v
3540 | sd TMP0, 0(TMP1)
3541 | ins_next2
3542 break;
3543
3544 case BC_UCLO:
3545 | // RA = level*8, RD = target
3546 | ld TMP2, L->openupval
3547 | branch_RD // Do this first since RD is not saved.
3548 | load_got lj_func_closeuv
3549 | sd BASE, L->base
3550 | beqz TMP2, >1
3551 |. move CARG1, L
3552 | call_intern lj_func_closeuv // (lua_State *L, TValue *level)
3553 |. daddu CARG2, BASE, RA
3554 | ld BASE, L->base
3555 |1:
3556 | ins_next
3557 break;
3558
3559 case BC_FNEW:
3560 | // RA = dst*8, RD = proto_const*8 (~) (holding function prototype)
3561 | load_got lj_func_newL_gc
3562 | dsubu TMP1, KBASE, RD
3563 | ld CARG3, FRAME_FUNC(BASE)
3564 | ld CARG2, -8(TMP1) // KBASE-8-tab_const*8
3565 | sd BASE, L->base
3566 | sd PC, SAVE_PC
3567 | cleartp CARG3
3568 | // (lua_State *L, GCproto *pt, GCfuncL *parent)
3569 | call_intern lj_func_newL_gc
3570 |. move CARG1, L
3571 | // Returns GCfuncL *.
3572 | li TMP0, LJ_TFUNC
3573 | ld BASE, L->base
3574 | ins_next1
3575 | settp CRET1, TMP0
3576 | daddu RA, BASE, RA
3577 | sd CRET1, 0(RA)
3578 | ins_next2
3579 break;
3580
3581 /* -- Table ops --------------------------------------------------------- */
3582
3583 case BC_TNEW:
3584 case BC_TDUP:
3585 | // RA = dst*8, RD = (hbits|asize)*8 | tab_const*8 (~)
3586 | ld TMP0, DISPATCH_GL(gc.total)(DISPATCH)
3587 | ld TMP1, DISPATCH_GL(gc.threshold)(DISPATCH)
3588 | sd BASE, L->base
3589 | sd PC, SAVE_PC
3590 | sltu AT, TMP0, TMP1
3591 | beqz AT, >5
3592 |1:
3593 if (op == BC_TNEW) {
3594 | load_got lj_tab_new
3595 | srl CARG2, RD, 3
3596 | andi CARG2, CARG2, 0x7ff
3597 | li TMP0, 0x801
3598 | addiu AT, CARG2, -0x7ff
3599 | srl CARG3, RD, 14
3600 | movz CARG2, TMP0, AT
3601 | // (lua_State *L, int32_t asize, uint32_t hbits)
3602 | call_intern lj_tab_new
3603 |. move CARG1, L
3604 | // Returns Table *.
3605 } else {
3606 | load_got lj_tab_dup
3607 | dsubu TMP1, KBASE, RD
3608 | move CARG1, L
3609 | call_intern lj_tab_dup // (lua_State *L, Table *kt)
3610 |. ld CARG2, -8(TMP1) // KBASE-8-str_const*8
3611 | // Returns Table *.
3612 }
3613 | li TMP0, LJ_TTAB
3614 | ld BASE, L->base
3615 | ins_next1
3616 | daddu RA, BASE, RA
3617 | settp CRET1, TMP0
3618 | sd CRET1, 0(RA)
3619 | ins_next2
3620 |5:
3621 | load_got lj_gc_step_fixtop
3622 | move MULTRES, RD
3623 | call_intern lj_gc_step_fixtop // (lua_State *L)
3624 |. move CARG1, L
3625 | b <1
3626 |. move RD, MULTRES
3627 break;
3628
3629 case BC_GGET:
3630 | // RA = dst*8, RD = str_const*8 (~)
3631 case BC_GSET:
3632 | // RA = src*8, RD = str_const*8 (~)
3633 | ld LFUNC:TMP2, FRAME_FUNC(BASE)
3634 | dsubu TMP1, KBASE, RD
3635 | ld STR:RC, -8(TMP1) // KBASE-8-str_const*8
3636 | cleartp LFUNC:TMP2
3637 | ld TAB:RB, LFUNC:TMP2->env
3638 if (op == BC_GGET) {
3639 | b ->BC_TGETS_Z
3640 } else {
3641 | b ->BC_TSETS_Z
3642 }
3643 |. daddu RA, BASE, RA
3644 break;
3645
3646 case BC_TGETV:
3647 | // RA = dst*8, RB = table*8, RC = key*8
3648 | decode_RB8a RB, INS
3649 | decode_RB8b RB
3650 | decode_RDtoRC8 RC, RD
3651 | daddu CARG2, BASE, RB
3652 | daddu CARG3, BASE, RC
3653 | ld TAB:RB, 0(CARG2)
3654 | ld TMP2, 0(CARG3)
3655 | daddu RA, BASE, RA
3656 | checktab TAB:RB, ->vmeta_tgetv
3657 | gettp TMP3, TMP2
3658 | bne TMP3, TISNUM, >5 // Integer key?
3659 |. lw TMP0, TAB:RB->asize
3660 | sextw TMP2, TMP2
3661 | ld TMP1, TAB:RB->array
3662 | sltu AT, TMP2, TMP0
3663 | sll TMP2, TMP2, 3
3664 | beqz AT, ->vmeta_tgetv // Integer key and in array part?
3665 |. daddu TMP2, TMP1, TMP2
3666 | ld AT, 0(TMP2)
3667 | beq AT, TISNIL, >2
3668 |. ld CRET1, 0(TMP2)
3669 |1:
3670 | ins_next1
3671 | sd CRET1, 0(RA)
3672 | ins_next2
3673 |
3674 |2: // Check for __index if table value is nil.
3675 | ld TAB:TMP2, TAB:RB->metatable
3676 | beqz TAB:TMP2, <1 // No metatable: done.
3677 |. nop
3678 | lbu TMP0, TAB:TMP2->nomm
3679 | andi TMP0, TMP0, 1<<MM_index
3680 | bnez TMP0, <1 // 'no __index' flag set: done.
3681 |. nop
3682 | b ->vmeta_tgetv
3683 |. nop
3684 |
3685 |5:
3686 | li AT, LJ_TSTR
3687 | bne TMP3, AT, ->vmeta_tgetv
3688 |. cleartp RC, TMP2
3689 | b ->BC_TGETS_Z // String key?
3690 |. nop
3691 break;
3692 case BC_TGETS:
3693 | // RA = dst*8, RB = table*8, RC = str_const*8 (~)
3694 | decode_RB8a RB, INS
3695 | decode_RB8b RB
3696 | decode_RC8a RC, INS
3697 | daddu CARG2, BASE, RB
3698 | decode_RC8b RC
3699 | ld TAB:RB, 0(CARG2)
3700 | dsubu CARG3, KBASE, RC
3701 | daddu RA, BASE, RA
3702 | ld STR:RC, -8(CARG3) // KBASE-8-str_const*8
3703 | checktab TAB:RB, ->vmeta_tgets1
3704 |->BC_TGETS_Z:
3705 | // TAB:RB = GCtab *, STR:RC = GCstr *, RA = dst*8
3706 | lw TMP0, TAB:RB->hmask
3707 | lw TMP1, STR:RC->hash
3708 | ld NODE:TMP2, TAB:RB->node
3709 | and TMP1, TMP1, TMP0 // idx = str->hash & tab->hmask
3710 | sll TMP0, TMP1, 5
3711 | sll TMP1, TMP1, 3
3712 | subu TMP1, TMP0, TMP1
3713 | li TMP3, LJ_TSTR
3714 | daddu NODE:TMP2, NODE:TMP2, TMP1 // node = tab->node + (idx*32-idx*8)
3715 | settp STR:RC, TMP3 // Tagged key to look for.
3716 |1:
3717 | ld CARG1, NODE:TMP2->key
3718 | ld CRET1, NODE:TMP2->val
3719 | ld NODE:TMP1, NODE:TMP2->next
3720 | bne CARG1, RC, >4
3721 |. ld TAB:TMP3, TAB:RB->metatable
3722 | beq CRET1, TISNIL, >5 // Key found, but nil value?
3723 |. nop
3724 |3:
3725 | ins_next1
3726 | sd CRET1, 0(RA)
3727 | ins_next2
3728 |
3729 |4: // Follow hash chain.
3730 | bnez NODE:TMP1, <1
3731 |. move NODE:TMP2, NODE:TMP1
3732 | // End of hash chain: key not found, nil result.
3733 |
3734 |5: // Check for __index if table value is nil.
3735 | beqz TAB:TMP3, <3 // No metatable: done.
3736 |. move CRET1, TISNIL
3737 | lbu TMP0, TAB:TMP3->nomm
3738 | andi TMP0, TMP0, 1<<MM_index
3739 | bnez TMP0, <3 // 'no __index' flag set: done.
3740 |. nop
3741 | b ->vmeta_tgets
3742 |. nop
3743 break;
3744 case BC_TGETB:
3745 | // RA = dst*8, RB = table*8, RC = index*8
3746 | decode_RB8a RB, INS
3747 | decode_RB8b RB
3748 | daddu CARG2, BASE, RB
3749 | decode_RDtoRC8 RC, RD
3750 | ld TAB:RB, 0(CARG2)
3751 | daddu RA, BASE, RA
3752 | srl TMP0, RC, 3
3753 | checktab TAB:RB, ->vmeta_tgetb
3754 | lw TMP1, TAB:RB->asize
3755 | ld TMP2, TAB:RB->array
3756 | sltu AT, TMP0, TMP1
3757 | beqz AT, ->vmeta_tgetb
3758 |. daddu RC, TMP2, RC
3759 | ld AT, 0(RC)
3760 | beq AT, TISNIL, >5
3761 |. ld CRET1, 0(RC)
3762 |1:
3763 | ins_next1
3764 | sd CRET1, 0(RA)
3765 | ins_next2
3766 |
3767 |5: // Check for __index if table value is nil.
3768 | ld TAB:TMP2, TAB:RB->metatable
3769 | beqz TAB:TMP2, <1 // No metatable: done.
3770 |. nop
3771 | lbu TMP1, TAB:TMP2->nomm
3772 | andi TMP1, TMP1, 1<<MM_index
3773 | bnez TMP1, <1 // 'no __index' flag set: done.
3774 |. nop
3775 | b ->vmeta_tgetb // Caveat: preserve TMP0 and CARG2!
3776 |. nop
3777 break;
3778 case BC_TGETR:
3779 | // RA = dst*8, RB = table*8, RC = key*8
3780 | decode_RB8a RB, INS
3781 | decode_RB8b RB
3782 | decode_RDtoRC8 RC, RD
3783 | daddu RB, BASE, RB
3784 | daddu RC, BASE, RC
3785 | ld TAB:CARG1, 0(RB)
3786 | lw CARG2, LO(RC)
3787 | daddu RA, BASE, RA
3788 | cleartp TAB:CARG1
3789 | lw TMP0, TAB:CARG1->asize
3790 | ld TMP1, TAB:CARG1->array
3791 | sltu AT, CARG2, TMP0
3792 | sll TMP2, CARG2, 3
3793 | beqz AT, ->vmeta_tgetr // In array part?
3794 |. daddu CRET1, TMP1, TMP2
3795 | ld CARG2, 0(CRET1)
3796 |->BC_TGETR_Z:
3797 | ins_next1
3798 | sd CARG2, 0(RA)
3799 | ins_next2
3800 break;
3801
3802 case BC_TSETV:
3803 | // RA = src*8, RB = table*8, RC = key*8
3804 | decode_RB8a RB, INS
3805 | decode_RB8b RB
3806 | decode_RDtoRC8 RC, RD
3807 | daddu CARG2, BASE, RB
3808 | daddu CARG3, BASE, RC
3809 | ld RB, 0(CARG2)
3810 | ld TMP2, 0(CARG3)
3811 | daddu RA, BASE, RA
3812 | checktab RB, ->vmeta_tsetv
3813 | checkint TMP2, >5
3814 |. sextw RC, TMP2
3815 | lw TMP0, TAB:RB->asize
3816 | ld TMP1, TAB:RB->array
3817 | sltu AT, RC, TMP0
3818 | sll TMP2, RC, 3
3819 | beqz AT, ->vmeta_tsetv // Integer key and in array part?
3820 |. daddu TMP1, TMP1, TMP2
3821 | ld TMP0, 0(TMP1)
3822 | lbu TMP3, TAB:RB->marked
3823 | beq TMP0, TISNIL, >3
3824 |. ld CRET1, 0(RA)
3825 |1:
3826 | andi AT, TMP3, LJ_GC_BLACK // isblack(table)
3827 | bnez AT, >7
3828 |. sd CRET1, 0(TMP1)
3829 |2:
3830 | ins_next
3831 |
3832 |3: // Check for __newindex if previous value is nil.
3833 | ld TAB:TMP2, TAB:RB->metatable
3834 | beqz TAB:TMP2, <1 // No metatable: done.
3835 |. nop
3836 | lbu TMP2, TAB:TMP2->nomm
3837 | andi TMP2, TMP2, 1<<MM_newindex
3838 | bnez TMP2, <1 // 'no __newindex' flag set: done.
3839 |. nop
3840 | b ->vmeta_tsetv
3841 |. nop
3842 |
3843 |5:
3844 | gettp AT, TMP2
3845 | daddiu AT, AT, -LJ_TSTR
3846 | bnez AT, ->vmeta_tsetv
3847 |. nop
3848 | b ->BC_TSETS_Z // String key?
3849 |. cleartp STR:RC, TMP2
3850 |
3851 |7: // Possible table write barrier for the value. Skip valiswhite check.
3852 | barrierback TAB:RB, TMP3, TMP0, <2
3853 break;
3854 case BC_TSETS:
3855 | // RA = src*8, RB = table*8, RC = str_const*8 (~)
3856 | decode_RB8a RB, INS
3857 | decode_RB8b RB
3858 | daddu CARG2, BASE, RB
3859 | decode_RC8a RC, INS
3860 | ld TAB:RB, 0(CARG2)
3861 | decode_RC8b RC
3862 | dsubu CARG3, KBASE, RC
3863 | ld RC, -8(CARG3) // KBASE-8-str_const*8
3864 | daddu RA, BASE, RA
3865 | cleartp STR:RC
3866 | checktab TAB:RB, ->vmeta_tsets1
3867 |->BC_TSETS_Z:
3868 | // TAB:RB = GCtab *, STR:RC = GCstr *, RA = BASE+src*8
3869 | lw TMP0, TAB:RB->hmask
3870 | lw TMP1, STR:RC->hash
3871 | ld NODE:TMP2, TAB:RB->node
3872 | sb r0, TAB:RB->nomm // Clear metamethod cache.
3873 | and TMP1, TMP1, TMP0 // idx = str->hash & tab->hmask
3874 | sll TMP0, TMP1, 5
3875 | sll TMP1, TMP1, 3
3876 | subu TMP1, TMP0, TMP1
3877 | li TMP3, LJ_TSTR
3878 | daddu NODE:TMP2, NODE:TMP2, TMP1 // node = tab->node + (idx*32-idx*8)
3879 | settp STR:RC, TMP3 // Tagged key to look for.
3880 |.if FPU
3881 | ldc1 f20, 0(RA)
3882 |.else
3883 | ld CRET1, 0(RA)
3884 |.endif
3885 |1:
3886 | ld TMP0, NODE:TMP2->key
3887 | ld CARG2, NODE:TMP2->val
3888 | ld NODE:TMP1, NODE:TMP2->next
3889 | bne TMP0, RC, >5
3890 |. lbu TMP3, TAB:RB->marked
3891 | beq CARG2, TISNIL, >4 // Key found, but nil value?
3892 |. ld TAB:TMP0, TAB:RB->metatable
3893 |2:
3894 | andi AT, TMP3, LJ_GC_BLACK // isblack(table)
3895 | bnez AT, >7
3896 |.if FPU
3897 |. sdc1 f20, NODE:TMP2->val
3898 |.else
3899 |. sd CRET1, NODE:TMP2->val
3900 |.endif
3901 |3:
3902 | ins_next
3903 |
3904 |4: // Check for __newindex if previous value is nil.
3905 | beqz TAB:TMP0, <2 // No metatable: done.
3906 |. nop
3907 | lbu TMP0, TAB:TMP0->nomm
3908 | andi TMP0, TMP0, 1<<MM_newindex
3909 | bnez TMP0, <2 // 'no __newindex' flag set: done.
3910 |. nop
3911 | b ->vmeta_tsets
3912 |. nop
3913 |
3914 |5: // Follow hash chain.
3915 | bnez NODE:TMP1, <1
3916 |. move NODE:TMP2, NODE:TMP1
3917 | // End of hash chain: key not found, add a new one
3918 |
3919 | // But check for __newindex first.
3920 | ld TAB:TMP2, TAB:RB->metatable
3921 | beqz TAB:TMP2, >6 // No metatable: continue.
3922 |. daddiu CARG3, DISPATCH, DISPATCH_GL(tmptv)
3923 | lbu TMP0, TAB:TMP2->nomm
3924 | andi TMP0, TMP0, 1<<MM_newindex
3925 | beqz TMP0, ->vmeta_tsets // 'no __newindex' flag NOT set: check.
3926 |6:
3927 | load_got lj_tab_newkey
3928 | sd RC, 0(CARG3)
3929 | sd BASE, L->base
3930 | move CARG2, TAB:RB
3931 | sd PC, SAVE_PC
3932 | call_intern lj_tab_newkey // (lua_State *L, GCtab *t, TValue *k
3933 |. move CARG1, L
3934 | // Returns TValue *.
3935 | ld BASE, L->base
3936 |.if FPU
3937 | b <3 // No 2nd write barrier needed.
3938 |. sdc1 f20, 0(CRET1)
3939 |.else
3940 | ld CARG1, 0(RA)
3941 | b <3 // No 2nd write barrier needed.
3942 |. sd CARG1, 0(CRET1)
3943 |.endif
3944 |
3945 |7: // Possible table write barrier for the value. Skip valiswhite check.
3946 | barrierback TAB:RB, TMP3, TMP0, <3
3947 break;
3948 case BC_TSETB:
3949 | // RA = src*8, RB = table*8, RC = index*8
3950 | decode_RB8a RB, INS
3951 | decode_RB8b RB
3952 | daddu CARG2, BASE, RB
3953 | decode_RDtoRC8 RC, RD
3954 | ld TAB:RB, 0(CARG2)
3955 | daddu RA, BASE, RA
3956 | srl TMP0, RC, 3
3957 | checktab RB, ->vmeta_tsetb
3958 | lw TMP1, TAB:RB->asize
3959 | ld TMP2, TAB:RB->array
3960 | sltu AT, TMP0, TMP1
3961 | beqz AT, ->vmeta_tsetb
3962 |. daddu RC, TMP2, RC
3963 | ld TMP1, 0(RC)
3964 | lbu TMP3, TAB:RB->marked
3965 | beq TMP1, TISNIL, >5
3966 |1:
3967 |. ld CRET1, 0(RA)
3968 | andi AT, TMP3, LJ_GC_BLACK // isblack(table)
3969 | bnez AT, >7
3970 |. sd CRET1, 0(RC)
3971 |2:
3972 | ins_next
3973 |
3974 |5: // Check for __newindex if previous value is nil.
3975 | ld TAB:TMP2, TAB:RB->metatable
3976 | beqz TAB:TMP2, <1 // No metatable: done.
3977 |. nop
3978 | lbu TMP1, TAB:TMP2->nomm
3979 | andi TMP1, TMP1, 1<<MM_newindex
3980 | bnez TMP1, <1 // 'no __newindex' flag set: done.
3981 |. nop
3982 | b ->vmeta_tsetb // Caveat: preserve TMP0 and CARG2!
3983 |. nop
3984 |
3985 |7: // Possible table write barrier for the value. Skip valiswhite check.
3986 | barrierback TAB:RB, TMP3, TMP0, <2
3987 break;
3988 case BC_TSETR:
3989 | // RA = dst*8, RB = table*8, RC = key*8
3990 | decode_RB8a RB, INS
3991 | decode_RB8b RB
3992 | decode_RDtoRC8 RC, RD
3993 | daddu CARG1, BASE, RB
3994 | daddu CARG3, BASE, RC
3995 | ld TAB:CARG2, 0(CARG1)
3996 | lw CARG3, LO(CARG3)
3997 | cleartp TAB:CARG2
3998 | lbu TMP3, TAB:CARG2->marked
3999 | lw TMP0, TAB:CARG2->asize
4000 | ld TMP1, TAB:CARG2->array
4001 | andi AT, TMP3, LJ_GC_BLACK // isblack(table)
4002 | bnez AT, >7
4003 |. daddu RA, BASE, RA
4004 |2:
4005 | sltu AT, CARG3, TMP0
4006 | sll TMP2, CARG3, 3
4007 | beqz AT, ->vmeta_tsetr // In array part?
4008 |. daddu CRET1, TMP1, TMP2
4009 |->BC_TSETR_Z:
4010 | ld CARG1, 0(RA)
4011 | ins_next1
4012 | sd CARG1, 0(CRET1)
4013 | ins_next2
4014 |
4015 |7: // Possible table write barrier for the value. Skip valiswhite check.
4016 | barrierback TAB:RB, TMP3, TMP0, <2
4017 break;
4018
4019 case BC_TSETM:
4020 | // RA = base*8 (table at base-1), RD = num_const*8 (start index)
4021 | daddu RA, BASE, RA
4022 |1:
4023 | daddu TMP3, KBASE, RD
4024 | ld TAB:CARG2, -8(RA) // Guaranteed to be a table.
4025 | addiu TMP0, MULTRES, -8
4026 | lw TMP3, LO(TMP3) // Integer constant is in lo-word.
4027 | beqz TMP0, >4 // Nothing to copy?
4028 |. srl CARG3, TMP0, 3
4029 | cleartp CARG2
4030 | addu CARG3, CARG3, TMP3
4031 | lw TMP2, TAB:CARG2->asize
4032 | sll TMP1, TMP3, 3
4033 | lbu TMP3, TAB:CARG2->marked
4034 | ld CARG1, TAB:CARG2->array
4035 | sltu AT, TMP2, CARG3
4036 | bnez AT, >5
4037 |. daddu TMP2, RA, TMP0
4038 | daddu TMP1, TMP1, CARG1
4039 | andi TMP0, TMP3, LJ_GC_BLACK // isblack(table)
4040 |3: // Copy result slots to table.
4041 | ld CRET1, 0(RA)
4042 | daddiu RA, RA, 8
4043 | sltu AT, RA, TMP2
4044 | sd CRET1, 0(TMP1)
4045 | bnez AT, <3
4046 |. daddiu TMP1, TMP1, 8
4047 | bnez TMP0, >7
4048 |. nop
4049 |4:
4050 | ins_next
4051 |
4052 |5: // Need to resize array part.
4053 | load_got lj_tab_reasize
4054 | sd BASE, L->base
4055 | sd PC, SAVE_PC
4056 | move BASE, RD
4057 | call_intern lj_tab_reasize // (lua_State *L, GCtab *t, int nasize)
4058 |. move CARG1, L
4059 | // Must not reallocate the stack.
4060 | move RD, BASE
4061 | b <1
4062 |. ld BASE, L->base // Reload BASE for lack of a saved register.
4063 |
4064 |7: // Possible table write barrier for any value. Skip valiswhite check.
4065 | barrierback TAB:CARG2, TMP3, TMP0, <4
4066 break;
4067
4068 /* -- Calls and vararg handling ----------------------------------------- */
4069
4070 case BC_CALLM:
4071 | // RA = base*8, (RB = (nresults+1)*8,) RC = extra_nargs*8
4072 | decode_RDtoRC8 NARGS8:RC, RD
4073 | b ->BC_CALL_Z
4074 |. addu NARGS8:RC, NARGS8:RC, MULTRES
4075 break;
4076 case BC_CALL:
4077 | // RA = base*8, (RB = (nresults+1)*8,) RC = (nargs+1)*8
4078 | decode_RDtoRC8 NARGS8:RC, RD
4079 |->BC_CALL_Z:
4080 | move TMP2, BASE
4081 | daddu BASE, BASE, RA
4082 | ld LFUNC:RB, 0(BASE)
4083 | daddiu BASE, BASE, 16
4084 | addiu NARGS8:RC, NARGS8:RC, -8
4085 | checkfunc RB, ->vmeta_call
4086 | ins_call
4087 break;
4088
4089 case BC_CALLMT:
4090 | // RA = base*8, (RB = 0,) RC = extra_nargs*8
4091 | addu NARGS8:RD, NARGS8:RD, MULTRES // BC_CALLT gets RC from RD.
4092 | // Fall through. Assumes BC_CALLT follows.
4093 break;
4094 case BC_CALLT:
4095 | // RA = base*8, (RB = 0,) RC = (nargs+1)*8
4096 | daddu RA, BASE, RA
4097 | ld RB, 0(RA)
4098 | move NARGS8:RC, RD
4099 | ld TMP1, FRAME_PC(BASE)
4100 | daddiu RA, RA, 16
4101 | addiu NARGS8:RC, NARGS8:RC, -8
4102 | checktp CARG3, RB, -LJ_TFUNC, ->vmeta_callt
4103 |->BC_CALLT_Z:
4104 | andi TMP0, TMP1, FRAME_TYPE // Caveat: preserve TMP0 until the 'or'.
4105 | lbu TMP3, LFUNC:CARG3->ffid
4106 | bnez TMP0, >7
4107 |. xori TMP2, TMP1, FRAME_VARG
4108 |1:
4109 | sd RB, FRAME_FUNC(BASE) // Copy function down, but keep PC.
4110 | sltiu AT, TMP3, 2 // (> FF_C) Calling a fast function?
4111 | move TMP2, BASE
4112 | move RB, CARG3
4113 | beqz NARGS8:RC, >3
4114 |. move TMP3, NARGS8:RC
4115 |2:
4116 | ld CRET1, 0(RA)
4117 | daddiu RA, RA, 8
4118 | addiu TMP3, TMP3, -8
4119 | sd CRET1, 0(TMP2)
4120 | bnez TMP3, <2
4121 |. daddiu TMP2, TMP2, 8
4122 |3:
4123 | or TMP0, TMP0, AT
4124 | beqz TMP0, >5
4125 |. nop
4126 |4:
4127 | ins_callt
4128 |
4129 |5: // Tailcall to a fast function with a Lua frame below.
4130 | lw INS, -4(TMP1)
4131 | decode_RA8a RA, INS
4132 | decode_RA8b RA
4133 | dsubu TMP1, BASE, RA
4134 | ld TMP1, -32(TMP1)
4135 | cleartp LFUNC:TMP1
4136 | ld TMP1, LFUNC:TMP1->pc
4137 | b <4
4138 |. ld KBASE, PC2PROTO(k)(TMP1) // Need to prepare KBASE.
4139 |
4140 |7: // Tailcall from a vararg function.
4141 | andi AT, TMP2, FRAME_TYPEP
4142 | bnez AT, <1 // Vararg frame below?
4143 |. dsubu TMP2, BASE, TMP2 // Relocate BASE down.
4144 | move BASE, TMP2
4145 | ld TMP1, FRAME_PC(TMP2)
4146 | b <1
4147 |. andi TMP0, TMP1, FRAME_TYPE
4148 break;
4149
4150 case BC_ITERC:
4151 | // RA = base*8, (RB = (nresults+1)*8, RC = (nargs+1)*8 ((2+1)*8))
4152 | move TMP2, BASE // Save old BASE fir vmeta_call.
4153 | daddu BASE, BASE, RA
4154 | ld RB, -24(BASE)
4155 | ld CARG1, -16(BASE)
4156 | ld CARG2, -8(BASE)
4157 | li NARGS8:RC, 16 // Iterators get 2 arguments.
4158 | sd RB, 0(BASE) // Copy callable.
4159 | sd CARG1, 16(BASE) // Copy state.
4160 | sd CARG2, 24(BASE) // Copy control var.
4161 | daddiu BASE, BASE, 16
4162 | checkfunc RB, ->vmeta_call
4163 | ins_call
4164 break;
4165
4166 case BC_ITERN:
4167 | // RA = base*8, (RB = (nresults+1)*8, RC = (nargs+1)*8 (2+1)*8)
4168 |.if JIT
4169 | // NYI: add hotloop, record BC_ITERN.
4170 |.endif
4171 | daddu RA, BASE, RA
4172 | ld TAB:RB, -16(RA)
4173 | lw RC, -8+LO(RA) // Get index from control var.
4174 | cleartp TAB:RB
4175 | daddiu PC, PC, 4
4176 | lw TMP0, TAB:RB->asize
4177 | ld TMP1, TAB:RB->array
4178 | dsll CARG3, TISNUM, 47
4179 |1: // Traverse array part.
4180 | sltu AT, RC, TMP0
4181 | beqz AT, >5 // Index points after array part?
4182 |. sll TMP3, RC, 3
4183 | daddu TMP3, TMP1, TMP3
4184 | ld CARG1, 0(TMP3)
4185 | lhu RD, -4+OFS_RD(PC)
4186 | or TMP2, RC, CARG3
4187 | beq CARG1, TISNIL, <1 // Skip holes in array part.
4188 |. addiu RC, RC, 1
4189 | sd TMP2, 0(RA)
4190 | sd CARG1, 8(RA)
4191 | or TMP0, RC, CARG3
4192 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
4193 | decode_RD4b RD
4194 | daddu RD, RD, TMP3
4195 | sw TMP0, -8+LO(RA) // Update control var.
4196 | daddu PC, PC, RD
4197 |3:
4198 | ins_next
4199 |
4200 |5: // Traverse hash part.
4201 | lw TMP1, TAB:RB->hmask
4202 | subu RC, RC, TMP0
4203 | ld TMP2, TAB:RB->node
4204 |6:
4205 | sltu AT, TMP1, RC // End of iteration? Branch to ITERL+1.
4206 | bnez AT, <3
4207 |. sll TMP3, RC, 5
4208 | sll RB, RC, 3
4209 | subu TMP3, TMP3, RB
4210 | daddu NODE:TMP3, TMP3, TMP2
4211 | ld CARG1, 0(NODE:TMP3)
4212 | lhu RD, -4+OFS_RD(PC)
4213 | beq CARG1, TISNIL, <6 // Skip holes in hash part.
4214 |. addiu RC, RC, 1
4215 | ld CARG2, NODE:TMP3->key
4216 | lui TMP3, (-(BCBIAS_J*4 >> 16) & 65535)
4217 | sd CARG1, 8(RA)
4218 | addu RC, RC, TMP0
4219 | decode_RD4b RD
4220 | addu RD, RD, TMP3
4221 | sd CARG2, 0(RA)
4222 | daddu PC, PC, RD
4223 | b <3
4224 |. sw RC, -8+LO(RA) // Update control var.
4225 break;
4226
4227 case BC_ISNEXT:
4228 | // RA = base*8, RD = target (points to ITERN)
4229 | daddu RA, BASE, RA
4230 | srl TMP0, RD, 1
4231 | ld CFUNC:CARG1, -24(RA)
4232 | daddu TMP0, PC, TMP0
4233 | ld CARG2, -16(RA)
4234 | ld CARG3, -8(RA)
4235 | lui TMP2, (-(BCBIAS_J*4 >> 16) & 65535)
4236 | checkfunc CFUNC:CARG1, >5
4237 | gettp CARG2, CARG2
4238 | daddiu CARG2, CARG2, -LJ_TTAB
4239 | lbu TMP1, CFUNC:CARG1->ffid
4240 | daddiu CARG3, CARG3, -LJ_TNIL
4241 | or AT, CARG2, CARG3
4242 | daddiu TMP1, TMP1, -FF_next_N
4243 | or AT, AT, TMP1
4244 | bnez AT, >5
4245 |. lui TMP1, 0xfffe
4246 | daddu PC, TMP0, TMP2
4247 | ori TMP1, TMP1, 0x7fff
4248 | dsll TMP1, TMP1, 32
4249 | sd TMP1, -8(RA)
4250 |1:
4251 | ins_next
4252 |5: // Despecialize bytecode if any of the checks fail.
4253 | li TMP3, BC_JMP
4254 | li TMP1, BC_ITERC
4255 | sb TMP3, -4+OFS_OP(PC)
4256 | daddu PC, TMP0, TMP2
4257 | b <1
4258 |. sb TMP1, OFS_OP(PC)
4259 break;
4260
4261 case BC_VARG:
4262 | // RA = base*8, RB = (nresults+1)*8, RC = numparams*8
4263 | ld TMP0, FRAME_PC(BASE)
4264 | decode_RDtoRC8 RC, RD
4265 | decode_RB8a RB, INS
4266 | daddu RC, BASE, RC
4267 | decode_RB8b RB
4268 | daddu RA, BASE, RA
4269 | daddiu RC, RC, FRAME_VARG
4270 | daddu TMP2, RA, RB
4271 | daddiu TMP3, BASE, -16 // TMP3 = vtop
4272 | dsubu RC, RC, TMP0 // RC = vbase
4273 | // Note: RC may now be even _above_ BASE if nargs was < numparams.
4274 | beqz RB, >5 // Copy all varargs?
4275 |. dsubu TMP1, TMP3, RC
4276 | daddiu TMP2, TMP2, -16
4277 |1: // Copy vararg slots to destination slots.
4278 | ld CARG1, 0(RC)
4279 | sltu AT, RC, TMP3
4280 | daddiu RC, RC, 8
4281 | movz CARG1, TISNIL, AT
4282 | sd CARG1, 0(RA)
4283 | sltu AT, RA, TMP2
4284 | bnez AT, <1
4285 |. daddiu RA, RA, 8
4286 |3:
4287 | ins_next
4288 |
4289 |5: // Copy all varargs.
4290 | ld TMP0, L->maxstack
4291 | blez TMP1, <3 // No vararg slots?
4292 |. li MULTRES, 8 // MULTRES = (0+1)*8
4293 | daddu TMP2, RA, TMP1
4294 | sltu AT, TMP0, TMP2
4295 | bnez AT, >7
4296 |. daddiu MULTRES, TMP1, 8
4297 |6:
4298 | ld CRET1, 0(RC)
4299 | daddiu RC, RC, 8
4300 | sd CRET1, 0(RA)
4301 | sltu AT, RC, TMP3
4302 | bnez AT, <6 // More vararg slots?
4303 |. daddiu RA, RA, 8
4304 | b <3
4305 |. nop
4306 |
4307 |7: // Grow stack for varargs.
4308 | load_got lj_state_growstack
4309 | sd RA, L->top
4310 | dsubu RA, RA, BASE
4311 | sd BASE, L->base
4312 | dsubu BASE, RC, BASE // Need delta, because BASE may change.
4313 | sd PC, SAVE_PC
4314 | srl CARG2, TMP1, 3
4315 | call_intern lj_state_growstack // (lua_State *L, int n)
4316 |. move CARG1, L
4317 | move RC, BASE
4318 | ld BASE, L->base
4319 | daddu RA, BASE, RA
4320 | daddu RC, BASE, RC
4321 | b <6
4322 |. daddiu TMP3, BASE, -16
4323 break;
4324
4325 /* -- Returns ----------------------------------------------------------- */
4326
4327 case BC_RETM:
4328 | // RA = results*8, RD = extra_nresults*8
4329 | addu RD, RD, MULTRES // MULTRES >= 8, so RD >= 8.
4330 | // Fall through. Assumes BC_RET follows.
4331 break;
4332
4333 case BC_RET:
4334 | // RA = results*8, RD = (nresults+1)*8
4335 | ld PC, FRAME_PC(BASE)
4336 | daddu RA, BASE, RA
4337 | move MULTRES, RD
4338 |1:
4339 | andi TMP0, PC, FRAME_TYPE
4340 | bnez TMP0, ->BC_RETV_Z
4341 |. xori TMP1, PC, FRAME_VARG
4342 |
4343 |->BC_RET_Z:
4344 | // BASE = base, RA = resultptr, RD = (nresults+1)*8, PC = return
4345 | lw INS, -4(PC)
4346 | daddiu TMP2, BASE, -16
4347 | daddiu RC, RD, -8
4348 | decode_RA8a TMP0, INS
4349 | decode_RB8a RB, INS
4350 | decode_RA8b TMP0
4351 | decode_RB8b RB
4352 | daddu TMP3, TMP2, RB
4353 | beqz RC, >3
4354 |. dsubu BASE, TMP2, TMP0
4355 |2:
4356 | ld CRET1, 0(RA)
4357 | daddiu RA, RA, 8
4358 | daddiu RC, RC, -8
4359 | sd CRET1, 0(TMP2)
4360 | bnez RC, <2
4361 |. daddiu TMP2, TMP2, 8
4362 |3:
4363 | daddiu TMP3, TMP3, -8
4364 |5:
4365 | sltu AT, TMP2, TMP3
4366 | bnez AT, >6
4367 |. ld LFUNC:TMP1, FRAME_FUNC(BASE)
4368 | ins_next1
4369 | cleartp LFUNC:TMP1
4370 | ld TMP1, LFUNC:TMP1->pc
4371 | ld KBASE, PC2PROTO(k)(TMP1)
4372 | ins_next2
4373 |
4374 |6: // Fill up results with nil.
4375 | sd TISNIL, 0(TMP2)
4376 | b <5
4377 |. daddiu TMP2, TMP2, 8
4378 |
4379 |->BC_RETV_Z: // Non-standard return case.
4380 | andi TMP2, TMP1, FRAME_TYPEP
4381 | bnez TMP2, ->vm_return
4382 |. nop
4383 | // Return from vararg function: relocate BASE down.
4384 | dsubu BASE, BASE, TMP1
4385 | b <1
4386 |. ld PC, FRAME_PC(BASE)
4387 break;
4388
4389 case BC_RET0: case BC_RET1:
4390 | // RA = results*8, RD = (nresults+1)*8
4391 | ld PC, FRAME_PC(BASE)
4392 | daddu RA, BASE, RA
4393 | move MULTRES, RD
4394 | andi TMP0, PC, FRAME_TYPE
4395 | bnez TMP0, ->BC_RETV_Z
4396 |. xori TMP1, PC, FRAME_VARG
4397 | lw INS, -4(PC)
4398 | daddiu TMP2, BASE, -16
4399 if (op == BC_RET1) {
4400 | ld CRET1, 0(RA)
4401 }
4402 | decode_RB8a RB, INS
4403 | decode_RA8a RA, INS
4404 | decode_RB8b RB
4405 | decode_RA8b RA
4406 | dsubu BASE, TMP2, RA
4407 if (op == BC_RET1) {
4408 | sd CRET1, 0(TMP2)
4409 }
4410 |5:
4411 | sltu AT, RD, RB
4412 | bnez AT, >6
4413 |. ld TMP1, FRAME_FUNC(BASE)
4414 | ins_next1
4415 | cleartp LFUNC:TMP1
4416 | ld TMP1, LFUNC:TMP1->pc
4417 | ld KBASE, PC2PROTO(k)(TMP1)
4418 | ins_next2
4419 |
4420 |6: // Fill up results with nil.
4421 | daddiu TMP2, TMP2, 8
4422 | daddiu RD, RD, 8
4423 | b <5
4424 if (op == BC_RET1) {
4425 |. sd TISNIL, 0(TMP2)
4426 } else {
4427 |. sd TISNIL, -8(TMP2)
4428 }
4429 break;
4430
4431 /* -- Loops and branches ------------------------------------------------ */
4432
4433 case BC_FORL:
4434 |.if JIT
4435 | hotloop
4436 |.endif
4437 | // Fall through. Assumes BC_IFORL follows.
4438 break;
4439
4440 case BC_JFORI:
4441 case BC_JFORL:
4442#if !LJ_HASJIT
4443 break;
4444#endif
4445 case BC_FORI:
4446 case BC_IFORL:
4447 | // RA = base*8, RD = target (after end of loop or start of loop)
4448 vk = (op == BC_IFORL || op == BC_JFORL);
4449 | daddu RA, BASE, RA
4450 | ld CARG1, FORL_IDX*8(RA) // IDX CARG1 - CARG3 type
4451 | gettp CARG3, CARG1
4452 if (op != BC_JFORL) {
4453 | srl RD, RD, 1
4454 | lui TMP2, (-(BCBIAS_J*4 >> 16) & 65535)
4455 | daddu TMP2, RD, TMP2
4456 }
4457 if (!vk) {
4458 | ld CARG2, FORL_STOP*8(RA) // STOP CARG2 - CARG4 type
4459 | ld CRET1, FORL_STEP*8(RA) // STEP CRET1 - CRET2 type
4460 | gettp CARG4, CARG2
4461 | bne CARG3, TISNUM, >5
4462 |. gettp CRET2, CRET1
4463 | bne CARG4, TISNUM, ->vmeta_for
4464 |. sextw CARG3, CARG1
4465 | bne CRET2, TISNUM, ->vmeta_for
4466 |. sextw CARG2, CARG2
4467 | dext AT, CRET1, 31, 0
4468 | slt CRET1, CARG2, CARG3
4469 | slt TMP1, CARG3, CARG2
4470 | movn CRET1, TMP1, AT
4471 } else {
4472 | bne CARG3, TISNUM, >5
4473 |. ld CARG2, FORL_STEP*8(RA) // STEP CARG2 - CARG4 type
4474 | ld CRET1, FORL_STOP*8(RA) // STOP CRET1 - CRET2 type
4475 | sextw TMP3, CARG1
4476 | sextw CARG2, CARG2
4477 | sextw CRET1, CRET1
4478 | addu CARG1, TMP3, CARG2
4479 | xor TMP0, CARG1, TMP3
4480 | xor TMP1, CARG1, CARG2
4481 | and TMP0, TMP0, TMP1
4482 | slt TMP1, CARG1, CRET1
4483 | slt CRET1, CRET1, CARG1
4484 | slt AT, CARG2, r0
4485 | slt TMP0, TMP0, r0 // ((y^a) & (y^b)) < 0: overflow.
4486 | movn CRET1, TMP1, AT
4487 | or CRET1, CRET1, TMP0
4488 | zextw CARG1, CARG1
4489 | settp CARG1, TISNUM
4490 }
4491 |1:
4492 if (op == BC_FORI) {
4493 | movz TMP2, r0, CRET1
4494 | daddu PC, PC, TMP2
4495 } else if (op == BC_JFORI) {
4496 | daddu PC, PC, TMP2
4497 | lhu RD, -4+OFS_RD(PC)
4498 } else if (op == BC_IFORL) {
4499 | movn TMP2, r0, CRET1
4500 | daddu PC, PC, TMP2
4501 }
4502 if (vk) {
4503 | sd CARG1, FORL_IDX*8(RA)
4504 }
4505 | ins_next1
4506 | sd CARG1, FORL_EXT*8(RA)
4507 |2:
4508 if (op == BC_JFORI) {
4509 | beqz CRET1, =>BC_JLOOP
4510 |. decode_RD8b RD
4511 } else if (op == BC_JFORL) {
4512 | beqz CRET1, =>BC_JLOOP
4513 }
4514 | ins_next2
4515 |
4516 |5: // FP loop.
4517 |.if FPU
4518 if (!vk) {
4519 | ldc1 f0, FORL_IDX*8(RA)
4520 | ldc1 f2, FORL_STOP*8(RA)
4521 | sltiu TMP0, CARG3, LJ_TISNUM
4522 | sltiu TMP1, CARG4, LJ_TISNUM
4523 | sltiu AT, CRET2, LJ_TISNUM
4524 | ld TMP3, FORL_STEP*8(RA)
4525 | and TMP0, TMP0, TMP1
4526 | and AT, AT, TMP0
4527 | beqz AT, ->vmeta_for
4528 |. slt TMP3, TMP3, r0
4529 | c.ole.d 0, f0, f2
4530 | c.ole.d 1, f2, f0
4531 | li CRET1, 1
4532 | movt CRET1, r0, 0
4533 | movt AT, r0, 1
4534 | b <1
4535 |. movn CRET1, AT, TMP3
4536 } else {
4537 | ldc1 f0, FORL_IDX*8(RA)
4538 | ldc1 f4, FORL_STEP*8(RA)
4539 | ldc1 f2, FORL_STOP*8(RA)
4540 | ld TMP3, FORL_STEP*8(RA)
4541 | add.d f0, f0, f4
4542 | c.ole.d 0, f0, f2
4543 | c.ole.d 1, f2, f0
4544 | slt TMP3, TMP3, r0
4545 | li CRET1, 1
4546 | li AT, 1
4547 | movt CRET1, r0, 0
4548 | movt AT, r0, 1
4549 | movn CRET1, AT, TMP3
4550 if (op == BC_IFORL) {
4551 | movn TMP2, r0, CRET1
4552 | daddu PC, PC, TMP2
4553 }
4554 | sdc1 f0, FORL_IDX*8(RA)
4555 | ins_next1
4556 | b <2
4557 |. sdc1 f0, FORL_EXT*8(RA)
4558 }
4559 |.else
4560 if (!vk) {
4561 | sltiu TMP0, CARG3, LJ_TISNUM
4562 | sltiu TMP1, CARG4, LJ_TISNUM
4563 | sltiu AT, CRET2, LJ_TISNUM
4564 | and TMP0, TMP0, TMP1
4565 | and AT, AT, TMP0
4566 | beqz AT, ->vmeta_for
4567 |. nop
4568 | bal ->vm_sfcmpolex
4569 |. lw TMP3, FORL_STEP*8+HI(RA)
4570 | b <1
4571 |. nop
4572 } else {
4573 | load_got __adddf3
4574 | call_extern
4575 |. sw TMP2, TMPD
4576 | ld CARG2, FORL_STOP*8(RA)
4577 | move CARG1, CRET1
4578 if ( op == BC_JFORL ) {
4579 | lhu RD, -4+OFS_RD(PC)
4580 | decode_RD8b RD
4581 }
4582 | bal ->vm_sfcmpolex
4583 |. lw TMP3, FORL_STEP*8+HI(RA)
4584 | b <1
4585 |. lw TMP2, TMPD
4586 }
4587 |.endif
4588 break;
4589
4590 case BC_ITERL:
4591 |.if JIT
4592 | hotloop
4593 |.endif
4594 | // Fall through. Assumes BC_IITERL follows.
4595 break;
4596
4597 case BC_JITERL:
4598#if !LJ_HASJIT
4599 break;
4600#endif
4601 case BC_IITERL:
4602 | // RA = base*8, RD = target
4603 | daddu RA, BASE, RA
4604 | ld TMP1, 0(RA)
4605 | beq TMP1, TISNIL, >1 // Stop if iterator returned nil.
4606 |. nop
4607 if (op == BC_JITERL) {
4608 | b =>BC_JLOOP
4609 |. sd TMP1, -8(RA)
4610 } else {
4611 | branch_RD // Otherwise save control var + branch.
4612 | sd TMP1, -8(RA)
4613 }
4614 |1:
4615 | ins_next
4616 break;
4617
4618 case BC_LOOP:
4619 | // RA = base*8, RD = target (loop extent)
4620 | // Note: RA/RD is only used by trace recorder to determine scope/extent
4621 | // This opcode does NOT jump, it's only purpose is to detect a hot loop.
4622 |.if JIT
4623 | hotloop
4624 |.endif
4625 | // Fall through. Assumes BC_ILOOP follows.
4626 break;
4627
4628 case BC_ILOOP:
4629 | // RA = base*8, RD = target (loop extent)
4630 | ins_next
4631 break;
4632
4633 case BC_JLOOP:
4634 |.if JIT
4635 | NYI
4636 |.endif
4637 break;
4638
4639 case BC_JMP:
4640 | // RA = base*8 (only used by trace recorder), RD = target
4641 | branch_RD
4642 | ins_next
4643 break;
4644
4645 /* -- Function headers -------------------------------------------------- */
4646
4647 case BC_FUNCF:
4648 |.if JIT
4649 | hotcall
4650 |.endif
4651 case BC_FUNCV: /* NYI: compiled vararg functions. */
4652 | // Fall through. Assumes BC_IFUNCF/BC_IFUNCV follow.
4653 break;
4654
4655 case BC_JFUNCF:
4656#if !LJ_HASJIT
4657 break;
4658#endif
4659 case BC_IFUNCF:
4660 | // BASE = new base, RA = BASE+framesize*8, RB = LFUNC, RC = nargs*8
4661 | ld TMP2, L->maxstack
4662 | lbu TMP1, -4+PC2PROTO(numparams)(PC)
4663 | ld KBASE, -4+PC2PROTO(k)(PC)
4664 | sltu AT, TMP2, RA
4665 | bnez AT, ->vm_growstack_l
4666 |. sll TMP1, TMP1, 3
4667 if (op != BC_JFUNCF) {
4668 | ins_next1
4669 }
4670 |2:
4671 | sltu AT, NARGS8:RC, TMP1 // Check for missing parameters.
4672 | bnez AT, >3
4673 |. daddu AT, BASE, NARGS8:RC
4674 if (op == BC_JFUNCF) {
4675 | decode_RD8a RD, INS
4676 | b =>BC_JLOOP
4677 |. decode_RD8b RD
4678 } else {
4679 | ins_next2
4680 }
4681 |
4682 |3: // Clear missing parameters.
4683 | sd TISNIL, 0(AT)
4684 | b <2
4685 |. addiu NARGS8:RC, NARGS8:RC, 8
4686 break;
4687
4688 case BC_JFUNCV:
4689#if !LJ_HASJIT
4690 break;
4691#endif
4692 | NYI // NYI: compiled vararg functions
4693 break; /* NYI: compiled vararg functions. */
4694
4695 case BC_IFUNCV:
4696 | // BASE = new base, RA = BASE+framesize*8, RB = LFUNC, RC = nargs*8
4697 | daddu TMP1, BASE, RC
4698 | ld TMP2, L->maxstack
4699 | daddu TMP0, RA, RC
4700 | sd LFUNC:RB, 0(TMP1) // Store (untagged) copy of LFUNC.
4701 | daddiu TMP3, RC, 16+FRAME_VARG
4702 | sltu AT, TMP0, TMP2
4703 | ld KBASE, -4+PC2PROTO(k)(PC)
4704 | beqz AT, ->vm_growstack_l
4705 |. sd TMP3, 8(TMP1) // Store delta + FRAME_VARG.
4706 | lbu TMP2, -4+PC2PROTO(numparams)(PC)
4707 | move RA, BASE
4708 | move RC, TMP1
4709 | ins_next1
4710 | beqz TMP2, >3
4711 |. daddiu BASE, TMP1, 16
4712 |1:
4713 | ld TMP0, 0(RA)
4714 | sltu AT, RA, RC // Less args than parameters?
4715 | move CARG1, TMP0
4716 | movz TMP0, TISNIL, AT // Clear missing parameters.
4717 | movn CARG1, TISNIL, AT // Clear old fixarg slot (help the GC).
4718 | addiu TMP2, TMP2, -1
4719 | sd TMP0, 16(TMP1)
4720 | daddiu TMP1, TMP1, 8
4721 | sd CARG1, 0(RA)
4722 | bnez TMP2, <1
4723 |. daddiu RA, RA, 8
4724 |3:
4725 | ins_next2
4726 break;
4727
4728 case BC_FUNCC:
4729 case BC_FUNCCW:
4730 | // BASE = new base, RA = BASE+framesize*8, RB = CFUNC, RC = nargs*8
4731 if (op == BC_FUNCC) {
4732 | ld CFUNCADDR, CFUNC:RB->f
4733 } else {
4734 | ld CFUNCADDR, DISPATCH_GL(wrapf)(DISPATCH)
4735 }
4736 | daddu TMP1, RA, NARGS8:RC
4737 | ld TMP2, L->maxstack
4738 | daddu RC, BASE, NARGS8:RC
4739 | sd BASE, L->base
4740 | sltu AT, TMP2, TMP1
4741 | sd RC, L->top
4742 | li_vmstate C
4743 if (op == BC_FUNCCW) {
4744 | ld CARG2, CFUNC:RB->f
4745 }
4746 | bnez AT, ->vm_growstack_c // Need to grow stack.
4747 |. move CARG1, L
4748 | jalr CFUNCADDR // (lua_State *L [, lua_CFunction f])
4749 |. st_vmstate
4750 | // Returns nresults.
4751 | ld BASE, L->base
4752 | sll RD, CRET1, 3
4753 | ld TMP1, L->top
4754 | li_vmstate INTERP
4755 | ld PC, FRAME_PC(BASE) // Fetch PC of caller.
4756 | dsubu RA, TMP1, RD // RA = L->top - nresults*8
4757 | sd L, DISPATCH_GL(cur_L)(DISPATCH)
4758 | b ->vm_returnc
4759 |. st_vmstate
4760 break;
4761
4762 /* ---------------------------------------------------------------------- */
4763
4764 default:
4765 fprintf(stderr, "Error: undefined opcode BC_%s\n", bc_names[op]);
4766 exit(2);
4767 break;
4768 }
4769}
4770
4771static int build_backend(BuildCtx *ctx)
4772{
4773 int op;
4774
4775 dasm_growpc(Dst, BC__MAX);
4776
4777 build_subroutines(ctx);
4778
4779 |.code_op
4780 for (op = 0; op < BC__MAX; op++)
4781 build_ins(ctx, (BCOp)op, op);
4782
4783 return BC__MAX;
4784}
4785
4786/* Emit pseudo frame-info for all assembler functions. */
4787static void emit_asm_debug(BuildCtx *ctx)
4788{
4789 int fcofs = (int)((uint8_t *)ctx->glob[GLOB_vm_ffi_call] - ctx->code);
4790 int i;
4791 switch (ctx->mode) {
4792 case BUILD_elfasm:
4793 fprintf(ctx->fp, "\t.section .debug_frame,\"\",@progbits\n");
4794 fprintf(ctx->fp,
4795 ".Lframe0:\n"
4796 "\t.4byte .LECIE0-.LSCIE0\n"
4797 ".LSCIE0:\n"
4798 "\t.4byte 0xffffffff\n"
4799 "\t.byte 0x1\n"
4800 "\t.string \"\"\n"
4801 "\t.uleb128 0x1\n"
4802 "\t.sleb128 -4\n"
4803 "\t.byte 31\n"
4804 "\t.byte 0xc\n\t.uleb128 29\n\t.uleb128 0\n"
4805 "\t.align 2\n"
4806 ".LECIE0:\n\n");
4807 fprintf(ctx->fp,
4808 ".LSFDE0:\n"
4809 "\t.4byte .LEFDE0-.LASFDE0\n"
4810 ".LASFDE0:\n"
4811 "\t.4byte .Lframe0\n"
4812 "\t.8byte .Lbegin\n"
4813 "\t.8byte %d\n"
4814 "\t.byte 0xe\n\t.uleb128 %d\n"
4815 "\t.byte 0x9f\n\t.sleb128 2*5\n"
4816 "\t.byte 0x9e\n\t.sleb128 2*6\n",
4817 fcofs, CFRAME_SIZE);
4818 for (i = 23; i >= 16; i--)
4819 fprintf(ctx->fp, "\t.byte %d\n\t.uleb128 %d\n", 0x80+i, 2*(30-i));
4820#if !LJ_SOFTFP
4821 for (i = 31; i >= 24; i--)
4822 fprintf(ctx->fp, "\t.byte %d\n\t.uleb128 %d\n", 0x80+32+i, 2*(46-i));
4823#endif
4824 fprintf(ctx->fp,
4825 "\t.align 2\n"
4826 ".LEFDE0:\n\n");
4827#if LJ_HASFFI
4828 fprintf(ctx->fp,
4829 ".LSFDE1:\n"
4830 "\t.4byte .LEFDE1-.LASFDE1\n"
4831 ".LASFDE1:\n"
4832 "\t.4byte .Lframe0\n"
4833 "\t.4byte lj_vm_ffi_call\n"
4834 "\t.4byte %d\n"
4835 "\t.byte 0x9f\n\t.uleb128 2*1\n"
4836 "\t.byte 0x90\n\t.uleb128 2*2\n"
4837 "\t.byte 0xd\n\t.uleb128 0x10\n"
4838 "\t.align 2\n"
4839 ".LEFDE1:\n\n", (int)ctx->codesz - fcofs);
4840#endif
4841#if !LJ_NO_UNWIND
4842 /* NYI */
4843#endif
4844 break;
4845 default:
4846 break;
4847 }
4848}
4849
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-01-12 16:46:30 +0000