diff options
Diffstat (limited to 'libffi/src/x86/win32.S')
| -rw-r--r-- | libffi/src/x86/win32.S | 55 |
1 files changed, 42 insertions, 13 deletions
diff --git a/libffi/src/x86/win32.S b/libffi/src/x86/win32.S index 34ec0fd82be..e472d623c06 100644 --- a/libffi/src/x86/win32.S +++ b/libffi/src/x86/win32.S @@ -45,6 +45,7 @@ _TEXT SEGMENT ffi_call_win32 PROC NEAR, ffi_prep_args : NEAR PTR DWORD, ecif : NEAR PTR DWORD, + cif_abi : DWORD, cif_bytes : DWORD, cif_flags : DWORD, rvalue : NEAR PTR DWORD, @@ -64,6 +65,19 @@ ffi_call_win32 PROC NEAR, ;; Return stack to previous state and call the function add esp, 8 + ;; Handle thiscall and fastcall + cmp cif_abi, 3 ;; FFI_THISCALL + jz do_thiscall + cmp cif_abi, 4 ;; FFI_FASTCALL + jnz do_stdcall + mov ecx, DWORD PTR [esp] + mov edx, DWORD PTR [esp+4] + add esp, 8 + jmp do_stdcall +do_thiscall: + mov ecx, DWORD PTR [esp] + add esp, 4 +do_stdcall: call fn ;; cdecl: we restore esp in the epilogue, so there's no need to @@ -405,7 +419,7 @@ _ffi_call_win32: movl %esp,%ebp .LCFI1: # Make room for all of the new args. - movl 16(%ebp),%ecx + movl 20(%ebp),%ecx subl %ecx,%esp movl %esp,%eax @@ -417,19 +431,34 @@ _ffi_call_win32: # Return stack to previous state and call the function addl $8,%esp - + + # Handle fastcall and thiscall + cmpl $3, 16(%ebp) # FFI_THISCALL + jz .do_thiscall + cmpl $4, 16(%ebp) # FFI_FASTCALL + jnz .do_fncall + movl (%esp), %ecx + movl 4(%esp), %edx + addl $8, %esp + jmp .do_fncall +.do_thiscall: + movl (%esp), %ecx + addl $4, %esp + +.do_fncall: + # FIXME: Align the stack to a 128-bit boundary to avoid # potential performance hits. - call *28(%ebp) + call *32(%ebp) # stdcall functions pop arguments off the stack themselves # Load %ecx with the return type code - movl 20(%ebp),%ecx + movl 24(%ebp),%ecx # If the return value pointer is NULL, assume no return value. - cmpl $0,24(%ebp) + cmpl $0,28(%ebp) jne 0f # Even if there is no space for the return value, we are @@ -488,50 +517,50 @@ _ffi_call_win32: .Lretint: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx movl %eax,0(%ecx) jmp .Lepilogue .Lretfloat: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx fstps (%ecx) jmp .Lepilogue .Lretdouble: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx fstpl (%ecx) jmp .Lepilogue .Lretlongdouble: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx fstpt (%ecx) jmp .Lepilogue .Lretint64: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx movl %eax,0(%ecx) movl %edx,4(%ecx) jmp .Lepilogue .Lretstruct1b: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx movb %al,0(%ecx) jmp .Lepilogue .Lretstruct2b: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx movw %ax,0(%ecx) jmp .Lepilogue .Lretstruct4b: # Load %ecx with the pointer to storage for the return value - movl 24(%ebp),%ecx + movl 28(%ebp),%ecx movl %eax,0(%ecx) jmp .Lepilogue |