Save all callee-saved x64 integer regs for unwinding.

Temporary measure. Does not cover xmm saves on WIN64.
May have to use unwind info or waste another 160 bytes per CFRAME.

3 files changed, 30 insertions, 22 deletions

diff --git a/src/buildvm_x86.dasc b/src/buildvm_x86.dasc
index d2bb80df..3b89debb 100644
--- a/src/buildvm_x86.dasc
+++ b/src/buildvm_x86.dasc
@@ -165,22 +165,28 @@
 |.define CFRAME_SPACE,  aword*5                 // Delta for rsp (see <--).
 |.macro saveregs
 |  push rbp; push rdi; push rsi; push rbx
+|  push r15; push r14; push r13; push r12
 |  sub rsp, CFRAME_SPACE
 |.endmacro
 |.macro restoreregs
 |  add rsp, CFRAME_SPACE
+|  pop r12; pop r13; pop r14; pop r15
 |  pop rbx; pop rsi; pop rdi; pop rbp
 |.endmacro
 |
-|.define SAVE_CFRAME,   aword [rsp+aword*13]
-|.define SAVE_PC,       dword [rsp+dword*25]
-|.define SAVE_L,        dword [rsp+dword*24]
-|.define SAVE_ERRF,     dword [rsp+dword*23]
-|.define SAVE_NRES,     dword [rsp+dword*22]
-|.define TMP2,          dword [rsp+dword*21]
-|.define TMP1,          dword [rsp+dword*20]
+|.define SAVE_CFRAME,   aword [rsp+aword*17]
+|.define SAVE_PC,       dword [rsp+dword*33]
+|.define SAVE_L,        dword [rsp+dword*32]
+|.define SAVE_ERRF,     dword [rsp+dword*31]
+|.define SAVE_NRES,     dword [rsp+dword*30]
+|.define TMP2,          dword [rsp+dword*29]
+|.define TMP1,          dword [rsp+dword*28]
 |//----- 16 byte aligned, ^^^ 32 byte register save area, owned by interpreter
-|.define SAVE_RET,      aword [rsp+aword*9]     //<-- rsp entering interpreter.
+|.define SAVE_RET,      aword [rsp+aword*13]    //<-- rsp entering interpreter.
+|.define SAVE_R8,       aword [rsp+aword*12]
+|.define SAVE_R7,       aword [rsp+aword*11]
+|.define SAVE_R6,       aword [rsp+aword*10]
+|.define SAVE_R5,       aword [rsp+aword*9]
 |.define SAVE_R4,       aword [rsp+aword*8]
 |.define SAVE_R3,       aword [rsp+aword*7]
 |.define SAVE_R2,       aword [rsp+aword*6]
@@ -204,16 +210,18 @@
 |
 |.define CFRAME_SPACE,  aword*5                 // Delta for rsp (see <--).
 |.macro saveregs
-|  push rbp; push r14; push r15; push rbx
+|  push rbp; push rbx; push r15; push r14; push r13; push r12
 |  sub rsp, CFRAME_SPACE
 |.endmacro
 |.macro restoreregs
 |  add rsp, CFRAME_SPACE
-|  pop rbx; pop r15; pop r14; pop rbp
+|  pop r12; pop r13; pop r14; pop r15; pop rbx; pop rbp
 |.endmacro
 |
 |//----- 16 byte aligned,
-|.define SAVE_RET,      aword [rsp+aword*9]     //<-- rsp entering interpreter.
+|.define SAVE_RET,      aword [rsp+aword*11]    //<-- rsp entering interpreter.
+|.define SAVE_R6,       aword [rsp+aword*10]
+|.define SAVE_R5,       aword [rsp+aword*9]
 |.define SAVE_R4,       aword [rsp+aword*8]
 |.define SAVE_R3,       aword [rsp+aword*7]
 |.define SAVE_R2,       aword [rsp+aword*6]
diff --git a/src/lj_arch.h b/src/lj_arch.h
index abdb5af9..0b69e574 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -48,7 +48,7 @@
 #define LJ_TARGET_X64           1
 #define LJ_TARGET_X86ORX64      1
 #define LJ_PAGESIZE             4096
-#error "No support for x64 architecture (yet)"
+#define LJ_ARCH_NOJIT           1       /* NYI */
 #else
 #error "No target architecture defined"
 #endif
diff --git a/src/lj_frame.h b/src/lj_frame.h
index 14d640cd..398ec4e5 100644
--- a/src/lj_frame.h
+++ b/src/lj_frame.h
@@ -66,19 +66,19 @@ enum {
 #define CFRAME_SIZE             (12*4)
 #elif LJ_TARGET_X64
 #if _WIN64
-#define CFRAME_OFS_ERRF         (23*4)
-#define CFRAME_OFS_NRES         (22*4)
-#define CFRAME_OFS_PREV         (13*8)
-#define CFRAME_OFS_L            (24*4)
-#define CFRAME_OFS_PC           (25*4)
-#define CFRAME_SIZE             (10*8)
+#define CFRAME_OFS_PREV         (17*8)
+#define CFRAME_OFS_PC           (33*4)
+#define CFRAME_OFS_L            (32*4)
+#define CFRAME_OFS_ERRF         (31*4)
+#define CFRAME_OFS_NRES         (30*4)
+#define CFRAME_SIZE             (14*8)
 #else
-#define CFRAME_OFS_ERRF         (3*4)
-#define CFRAME_OFS_NRES         (2*4)
 #define CFRAME_OFS_PREV         (4*8)
-#define CFRAME_OFS_L            (4*4)
 #define CFRAME_OFS_PC           (5*4)
-#define CFRAME_SIZE             (10*8)
+#define CFRAME_OFS_L            (4*4)
+#define CFRAME_OFS_ERRF         (3*4)
+#define CFRAME_OFS_NRES         (2*4)
+#define CFRAME_SIZE             (12*8)
 #endif
 #else
 #error "Missing CFRAME_* definitions for this architecture"