/
win64_intel.S
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/
win64_intel.S
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#define LIBFFI_ASM
#include <fficonfig.h>
#include <ffi.h>
#include <ffi_cfi.h>
#include "asmnames.h"
#if defined(HAVE_AS_CFI_PSEUDO_OP)
.cfi_sections .debug_frame
#endif
#ifdef X86_WIN64
#define SEH(...) __VA_ARGS__
#define arg0 rcx
#define arg1 rdx
#define arg2 r8
#define arg3 r9
#else
#define SEH(...)
#define arg0 rdi
#define arg1 rsi
#define arg2 rdx
#define arg3 rcx
#endif
/* This macro allows the safe creation of jump tables without an
actual table. The entry points into the table are all 8 bytes.
The use of ORG asserts that we're at the correct location. */
/* ??? The clang assembler doesn't handle .org with symbolic expressions. */
#if defined(__clang__) || defined(__APPLE__) || (defined (__sun__) && defined(__svr4__))
# define E(BASE, X) ALIGN 8
#else
# define E(BASE, X) ALIGN 8; ORG BASE + (X) * 8
#endif
.CODE
extern PLT(C(abort)):near
extern C(ffi_closure_win64_inner):near
/* ffi_call_win64 (void *stack, struct win64_call_frame *frame, void *r10)
Bit o trickiness here -- FRAME is the base of the stack frame
for this function. This has been allocated by ffi_call. We also
deallocate some of the stack that has been alloca'd. */
ALIGN 8
PUBLIC C(ffi_call_win64)
; SEH(.safesh ffi_call_win64)
C(ffi_call_win64) proc SEH(frame)
cfi_startproc
/* Set up the local stack frame and install it in rbp/rsp. */
mov RAX, [RSP] ; movq (%rsp), %rax
mov [arg1], RBP ; movq %rbp, (arg1)
mov [arg1 + 8], RAX; movq %rax, 8(arg1)
mov RBP, arg1; movq arg1, %rbp
cfi_def_cfa(rbp, 16)
cfi_rel_offset(rbp, 0)
SEH(.pushreg rbp)
SEH(.setframe rbp, 0)
SEH(.endprolog)
mov RSP, arg0 ; movq arg0, %rsp
mov R10, arg2 ; movq arg2, %r10
/* Load all slots into both general and xmm registers. */
mov RCX, [RSP] ; movq (%rsp), %rcx
movsd XMM0, qword ptr [RSP] ; movsd (%rsp), %xmm0
mov RDX, [RSP + 8] ;movq 8(%rsp), %rdx
movsd XMM1, qword ptr [RSP + 8]; movsd 8(%rsp), %xmm1
mov R8, [RSP + 16] ; movq 16(%rsp), %r8
movsd XMM2, qword ptr [RSP + 16] ; movsd 16(%rsp), %xmm2
mov R9, [RSP + 24] ; movq 24(%rsp), %r9
movsd XMM3, qword ptr [RSP + 24] ;movsd 24(%rsp), %xmm3
CALL qword ptr [RBP + 16] ; call *16(%rbp)
mov ECX, [RBP + 24] ; movl 24(%rbp), %ecx
mov R8, [RBP + 32] ; movq 32(%rbp), %r8
LEA R10, ffi_call_win64_tab ; leaq 0f(%rip), %r10
CMP ECX, FFI_TYPE_SMALL_STRUCT_4B ; cmpl $FFI_TYPE_SMALL_STRUCT_4B, %ecx
LEA R10, [R10 + RCX*8] ; leaq (%r10, %rcx, 8), %r10
JA L99 ; ja 99f
JMP R10 ; jmp *%r10
/* Below, we're space constrained most of the time. Thus we eschew the
modern "mov, pop, ret" sequence (5 bytes) for "leave, ret" (2 bytes). */
epilogue macro
LEAVE
cfi_remember_state
cfi_def_cfa(rsp, 8)
cfi_restore(rbp)
RET
cfi_restore_state
endm
ALIGN 8
ffi_call_win64_tab LABEL NEAR
E(0b, FFI_TYPE_VOID)
epilogue
E(0b, FFI_TYPE_INT)
movsxd rax, eax ; movslq %eax, %rax
mov qword ptr [r8], rax; movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_FLOAT)
movss dword ptr [r8], xmm0 ; movss %xmm0, (%r8)
epilogue
E(0b, FFI_TYPE_DOUBLE)
movsd qword ptr[r8], xmm0; movsd %xmm0, (%r8)
epilogue
// FFI_TYPE_LONGDOUBLE may be FFI_TYPE_DOUBLE but we need a different value here.
E(0b, FFI_TYPE_DOUBLE + 1)
call PLT(C(abort))
E(0b, FFI_TYPE_UINT8)
movzx eax, al ;movzbl %al, %eax
mov qword ptr[r8], rax; movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_SINT8)
movsx rax, al ; movsbq %al, %rax
jmp L98
E(0b, FFI_TYPE_UINT16)
movzx eax, ax ; movzwl %ax, %eax
mov qword ptr[r8], rax; movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_SINT16)
movsx rax, ax; movswq %ax, %rax
jmp L98
E(0b, FFI_TYPE_UINT32)
mov eax, eax; movl %eax, %eax
mov qword ptr[r8], rax ; movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_SINT32)
movsxd rax, eax; movslq %eax, %rax
mov qword ptr [r8], rax; movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_UINT64)
L98 LABEL near
mov qword ptr [r8], rax ; movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_SINT64)
mov qword ptr [r8], rax;movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_STRUCT)
epilogue
E(0b, FFI_TYPE_POINTER)
mov qword ptr [r8], rax ;movq %rax, (%r8)
epilogue
E(0b, FFI_TYPE_COMPLEX)
call PLT(C(abort))
E(0b, FFI_TYPE_SMALL_STRUCT_1B)
mov byte ptr [r8], al ; movb %al, (%r8)
epilogue
E(0b, FFI_TYPE_SMALL_STRUCT_2B)
mov word ptr [r8], ax ; movw %ax, (%r8)
epilogue
E(0b, FFI_TYPE_SMALL_STRUCT_4B)
mov dword ptr [r8], eax ; movl %eax, (%r8)
epilogue
align 8
L99 LABEL near
call PLT(C(abort))
epilogue
cfi_endproc
C(ffi_call_win64) endp
/* 32 bytes of outgoing register stack space, 8 bytes of alignment,
16 bytes of result, 32 bytes of xmm registers. */
#define ffi_clo_FS (32+8+16+32)
#define ffi_clo_OFF_R (32+8)
#define ffi_clo_OFF_X (32+8+16)
align 8
PUBLIC C(ffi_go_closure_win64)
C(ffi_go_closure_win64) proc
cfi_startproc
/* Save all integer arguments into the incoming reg stack space. */
mov qword ptr [rsp + 8], rcx; movq %rcx, 8(%rsp)
mov qword ptr [rsp + 16], rdx; movq %rdx, 16(%rsp)
mov qword ptr [rsp + 24], r8; movq %r8, 24(%rsp)
mov qword ptr [rsp + 32], r9 ;movq %r9, 32(%rsp)
mov rcx, qword ptr [r10 + 8]; movq 8(%r10), %rcx /* load cif */
mov rdx, qword ptr [r10 + 16]; movq 16(%r10), %rdx /* load fun */
mov r8, r10 ; movq %r10, %r8 /* closure is user_data */
jmp ffi_closure_win64_2
cfi_endproc
C(ffi_go_closure_win64) endp
align 8
PUBLIC C(ffi_closure_win64)
C(ffi_closure_win64) PROC FRAME
cfi_startproc
/* Save all integer arguments into the incoming reg stack space. */
mov qword ptr [rsp + 8], rcx; movq %rcx, 8(%rsp)
mov qword ptr [rsp + 16], rdx; movq %rdx, 16(%rsp)
mov qword ptr [rsp + 24], r8; movq %r8, 24(%rsp)
mov qword ptr [rsp + 32], r9; movq %r9, 32(%rsp)
mov rcx, qword ptr [FFI_TRAMPOLINE_SIZE + r10] ;movq FFI_TRAMPOLINE_SIZE(%r10), %rcx /* load cif */
mov rdx, qword ptr [FFI_TRAMPOLINE_SIZE + 8 + r10] ; movq FFI_TRAMPOLINE_SIZE+8(%r10), %rdx /* load fun */
mov r8, qword ptr [FFI_TRAMPOLINE_SIZE+16+r10] ;movq FFI_TRAMPOLINE_SIZE+16(%r10), %r8 /* load user_data */
ffi_closure_win64_2 LABEL near
sub rsp, ffi_clo_FS ;subq $ffi_clo_FS, %rsp
cfi_adjust_cfa_offset(ffi_clo_FS)
SEH(.allocstack ffi_clo_FS)
SEH(.endprolog)
/* Save all sse arguments into the stack frame. */
movsd qword ptr [ffi_clo_OFF_X + rsp], xmm0 ; movsd %xmm0, ffi_clo_OFF_X(%rsp)
movsd qword ptr [ffi_clo_OFF_X+8+rsp], xmm1 ; movsd %xmm1, ffi_clo_OFF_X+8(%rsp)
movsd qword ptr [ffi_clo_OFF_X+16+rsp], xmm2 ; movsd %xmm2, ffi_clo_OFF_X+16(%rsp)
movsd qword ptr [ffi_clo_OFF_X+24+rsp], xmm3 ; movsd %xmm3, ffi_clo_OFF_X+24(%rsp)
lea r9, [ffi_clo_OFF_R + rsp] ; leaq ffi_clo_OFF_R(%rsp), %r9
call C(ffi_closure_win64_inner)
/* Load the result into both possible result registers. */
mov rax, qword ptr [ffi_clo_OFF_R + rsp] ;movq ffi_clo_OFF_R(%rsp), %rax
movsd xmm0, qword ptr [rsp + ffi_clo_OFF_R] ;movsd ffi_clo_OFF_R(%rsp), %xmm0
add rsp, ffi_clo_FS ;addq $ffi_clo_FS, %rsp
cfi_adjust_cfa_offset(-ffi_clo_FS)
ret
cfi_endproc
C(ffi_closure_win64) endp
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
_text ends
end