1 files changed, 284 insertions, 0 deletions

diff --git a/Asm/x86/7zAsm.asm b/Asm/x86/7zAsm.asm
new file mode 100644
index 0000000..6275bb7
--- /dev/null
+++ b/Asm/x86/7zAsm.asm
@@ -0,0 +1,284 @@
+; 7zAsm.asm -- ASM macros
+; 2021-12-25 : Igor Pavlov : Public domain
+
+
+ifdef @wordsize
+; @wordsize is defined only in JWASM and ASMC and is not defined in MASM
+; @wordsize eq 8 for 64-bit x64
+; @wordsize eq 2 for 32-bit x86
+if @wordsize eq 8
+  x64 equ 1
+endif
+else
+ifdef RAX
+  x64 equ 1
+endif
+endif
+
+
+ifdef x64
+  IS_X64 equ 1
+else
+  IS_X64 equ 0
+endif
+
+ifdef ABI_LINUX
+  IS_LINUX equ 1
+else
+  IS_LINUX equ 0
+endif
+
+ifndef x64
+; Use ABI_CDECL for x86 (32-bit) only
+; if ABI_CDECL is not defined, we use fastcall abi
+ifdef ABI_CDECL
+  IS_CDECL equ 1
+else
+  IS_CDECL equ 0
+endif
+endif
+
+OPTION PROLOGUE:NONE 
+OPTION EPILOGUE:NONE
+
+MY_ASM_START macro
+  ifdef x64
+    .code
+  else
+    .386
+    .model flat
+    _TEXT$00 SEGMENT PARA PUBLIC 'CODE'
+  endif
+endm
+
+MY_PROC macro name:req, numParams:req
+  align 16
+  proc_numParams = numParams
+  if (IS_X64 gt 0)
+    proc_name equ name
+  elseif (IS_LINUX gt 0)
+    proc_name equ name
+  elseif (IS_CDECL gt 0)
+    proc_name equ @CatStr(_,name)
+  else
+    proc_name equ @CatStr(@,name,@, %numParams * 4)
+  endif
+  proc_name PROC
+endm
+
+MY_ENDP macro
+    if (IS_X64 gt 0)
+        ret
+    elseif (IS_CDECL gt 0)
+        ret
+    elseif (proc_numParams LT 3)
+        ret
+    else
+        ret (proc_numParams - 2) * 4
+    endif
+  proc_name ENDP
+endm
+
+
+ifdef x64
+  REG_SIZE equ 8
+  REG_LOGAR_SIZE equ 3
+else
+  REG_SIZE equ 4
+  REG_LOGAR_SIZE equ 2
+endif
+
+  x0 equ EAX
+  x1 equ ECX
+  x2 equ EDX
+  x3 equ EBX
+  x4 equ ESP
+  x5 equ EBP
+  x6 equ ESI
+  x7 equ EDI
+
+  x0_W equ AX
+  x1_W equ CX
+  x2_W equ DX
+  x3_W equ BX
+
+  x5_W equ BP
+  x6_W equ SI
+  x7_W equ DI
+
+  x0_L equ AL
+  x1_L equ CL
+  x2_L equ DL
+  x3_L equ BL
+
+  x0_H equ AH
+  x1_H equ CH
+  x2_H equ DH
+  x3_H equ BH
+
+ifdef x64
+  x5_L equ BPL
+  x6_L equ SIL
+  x7_L equ DIL
+
+  r0 equ RAX
+  r1 equ RCX
+  r2 equ RDX
+  r3 equ RBX
+  r4 equ RSP
+  r5 equ RBP
+  r6 equ RSI
+  r7 equ RDI
+  x8 equ r8d
+  x9 equ r9d
+  x10 equ r10d
+  x11 equ r11d
+  x12 equ r12d
+  x13 equ r13d
+  x14 equ r14d
+  x15 equ r15d
+else
+  r0 equ x0
+  r1 equ x1
+  r2 equ x2
+  r3 equ x3
+  r4 equ x4
+  r5 equ x5
+  r6 equ x6
+  r7 equ x7
+endif
+
+
+ifdef x64
+ifdef ABI_LINUX
+
+MY_PUSH_2_REGS macro
+    push    r3
+    push    r5
+endm
+
+MY_POP_2_REGS macro
+    pop     r5
+    pop     r3
+endm
+
+endif
+endif
+
+
+MY_PUSH_4_REGS macro
+    push    r3
+    push    r5
+    push    r6
+    push    r7
+endm
+
+MY_POP_4_REGS macro
+    pop     r7
+    pop     r6
+    pop     r5
+    pop     r3
+endm
+
+
+; for fastcall and for WIN-x64
+REG_PARAM_0_x   equ x1
+REG_PARAM_0     equ r1
+REG_PARAM_1_x   equ x2
+REG_PARAM_1     equ r2
+
+ifndef x64
+; for x86-fastcall
+
+REG_ABI_PARAM_0_x equ REG_PARAM_0_x
+REG_ABI_PARAM_0   equ REG_PARAM_0
+REG_ABI_PARAM_1_x equ REG_PARAM_1_x
+REG_ABI_PARAM_1   equ REG_PARAM_1
+
+else
+; x64
+
+if  (IS_LINUX eq 0)
+
+; for WIN-x64:
+REG_PARAM_2_x   equ x8
+REG_PARAM_2     equ r8
+REG_PARAM_3     equ r9
+
+REG_ABI_PARAM_0_x equ REG_PARAM_0_x
+REG_ABI_PARAM_0   equ REG_PARAM_0
+REG_ABI_PARAM_1_x equ REG_PARAM_1_x
+REG_ABI_PARAM_1   equ REG_PARAM_1
+REG_ABI_PARAM_2_x equ REG_PARAM_2_x
+REG_ABI_PARAM_2   equ REG_PARAM_2
+REG_ABI_PARAM_3   equ REG_PARAM_3
+
+else
+; for LINUX-x64:
+REG_LINUX_PARAM_0_x equ x7
+REG_LINUX_PARAM_0   equ r7
+REG_LINUX_PARAM_1_x equ x6
+REG_LINUX_PARAM_1   equ r6
+REG_LINUX_PARAM_2   equ r2
+REG_LINUX_PARAM_3   equ r1
+REG_LINUX_PARAM_4_x equ x8
+REG_LINUX_PARAM_4   equ r8
+REG_LINUX_PARAM_5   equ r9
+
+REG_ABI_PARAM_0_x equ REG_LINUX_PARAM_0_x
+REG_ABI_PARAM_0   equ REG_LINUX_PARAM_0
+REG_ABI_PARAM_1_x equ REG_LINUX_PARAM_1_x
+REG_ABI_PARAM_1   equ REG_LINUX_PARAM_1
+REG_ABI_PARAM_2   equ REG_LINUX_PARAM_2
+REG_ABI_PARAM_3   equ REG_LINUX_PARAM_3
+REG_ABI_PARAM_4_x equ REG_LINUX_PARAM_4_x
+REG_ABI_PARAM_4   equ REG_LINUX_PARAM_4
+REG_ABI_PARAM_5   equ REG_LINUX_PARAM_5
+
+MY_ABI_LINUX_TO_WIN_2 macro
+        mov     r2, r6
+        mov     r1, r7
+endm
+
+MY_ABI_LINUX_TO_WIN_3 macro
+        mov     r8, r2
+        mov     r2, r6
+        mov     r1, r7
+endm
+
+MY_ABI_LINUX_TO_WIN_4 macro
+        mov     r9, r1
+        mov     r8, r2
+        mov     r2, r6
+        mov     r1, r7
+endm
+
+endif ; IS_LINUX
+
+
+MY_PUSH_PRESERVED_ABI_REGS macro
+    if  (IS_LINUX gt 0)
+        MY_PUSH_2_REGS
+    else
+        MY_PUSH_4_REGS
+    endif
+        push    r12
+        push    r13
+        push    r14
+        push    r15
+endm
+
+
+MY_POP_PRESERVED_ABI_REGS macro
+        pop     r15
+        pop     r14
+        pop     r13
+        pop     r12
+    if  (IS_LINUX gt 0)
+        MY_POP_2_REGS
+    else
+        MY_POP_4_REGS
+    endif
+endm
+
+endif ; x64