21.02

Asm/x86/7zAsm.asm

@@ -1,5 +1,32 @@
 ; 7zAsm.asm -- ASM macros
-; 2018-02-03 : Igor Pavlov : Public domain
+; 2021-02-07 : Igor Pavlov : Public domain
+
+ifdef RAX
+  x64 equ 1
+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
+
 
 MY_ASM_START macro
   ifdef x64
@@ -14,8 +41,12 @@ endm
 MY_PROC macro name:req, numParams:req
   align 16
   proc_numParams = numParams
-  ifdef x64
+  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
@@ -23,18 +54,19 @@ MY_PROC macro name:req, numParams:req
 endm
 
 MY_ENDP macro
-  ifdef x64
-    ret
-  else
-    if proc_numParams LT 3
-      ret
+    if (IS_X64 gt 0)
+        ret
+    elseif (IS_CDECL gt 0)
+        ret
+    elseif (proc_numParams LT 3)
+        ret
     else
-      ret (proc_numParams - 2) * 4
+        ret (proc_numParams - 2) * 4
     endif
-  endif
   proc_name ENDP
 endm
 
+
 ifdef x64
   REG_SIZE equ 8
   REG_LOGAR_SIZE equ 3
@@ -103,6 +135,24 @@ else
   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
@@ -118,30 +168,91 @@ MY_POP_4_REGS macro
 endm
 
 
-ifdef x64
+; for fastcall and for WIN-x64
+REG_PARAM_0_x   equ x1
+REG_PARAM_0     equ r1
+REG_PARAM_1     equ r2
 
-; for WIN64-x64 ABI:
+ifndef x64
+; for x86-fastcall
 
-REG_PARAM_0 equ r1
-REG_PARAM_1 equ r2
+REG_ABI_PARAM_0_x equ REG_PARAM_0_x
+REG_ABI_PARAM_0   equ REG_PARAM_0
+REG_ABI_PARAM_1   equ REG_PARAM_1
+
+else
+; x64
+
+if  (IS_LINUX eq 0)
+
+; for WIN-x64:
 REG_PARAM_2 equ r8
 REG_PARAM_3 equ r9
 
-MY_PUSH_PRESERVED_REGS macro
-    MY_PUSH_4_REGS
-    push    r12
-    push    r13
-    push    r14
-    push    r15
+REG_ABI_PARAM_0_x equ REG_PARAM_0_x
+REG_ABI_PARAM_0   equ REG_PARAM_0
+REG_ABI_PARAM_1   equ REG_PARAM_1
+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 equ r6
+REG_LINUX_PARAM_2 equ r2
+REG_LINUX_PARAM_3 equ r1
+
+REG_ABI_PARAM_0_x equ REG_LINUX_PARAM_0_x
+REG_ABI_PARAM_0   equ REG_LINUX_PARAM_0
+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
+
+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_REGS macro
-    pop     r15
-    pop     r14
-    pop     r13
-    pop     r12
-    MY_POP_4_REGS
+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
+endif ; x64