/* -----------------------------------------------------------------------
unix64.S - Copyright (c) 2002 Bo Thorsen <bo@suse.de>
x86-64 Foreign Function Interface
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#ifdef __x86_64__
#define LIBFFI_ASM
#include <ffi.h>
.section .rodata
.LC0:
.string "asm in progress %lld\n"
.LC1:
.string "asm in progress\n"
.text
.align 2
.globl ffi_call_UNIX64
.type ffi_call_UNIX64,@function
ffi_call_UNIX64:
.LFB1:
pushq %rbp
.LCFI0:
movq %rsp, %rbp
.LCFI1:
/* Save all arguments */
subq $48, %rsp
.LCFI2:
movq %rdi, -8(%rbp) /* ffi_prep_args */
movq %rsi, -16(%rbp) /* ffi_fill_return_value */
movq %rdx, -24(%rbp) /* ecif */
movq %rcx, -32(%rbp) /* cif->bytes */
movq %r8, -40(%rbp) /* ecif.rvalue */
movq %r9, -48(%rbp) /* fn */
/* Make room for all of the new args and the register args */
addl $176, %ecx
.LCFI3:
subq %rcx, %rsp
.LCFI4:
/* Setup the call to ffi_prep_args. */
movq %rdi, %rax /* &ffi_prep_args */
movq %rsp, %rdi /* stackLayout */
movq %rdx, %rsi /* ecif */
call *%rax /* ffi_prep_args(stackLayout, ecif) /* ffi_prep_args have put all the register contents into the */
/* stackLayout struct. Now put the register values in place. */
movq (%rsp), %rdi
movq 8(%rsp), %rsi
movq 16(%rsp), %rdx
movq 24(%rsp), %rcx
movq 32(%rsp), %r8
movq 40(%rsp), %r9
movaps 48(%rsp), %xmm0
movaps 64(%rsp), %xmm1
movaps 80(%rsp), %xmm2
movaps 96(%rsp), %xmm3
movaps 112(%rsp), %xmm4
movaps 128(%rsp), %xmm5
movaps 144(%rsp), %xmm6
movaps 160(%rsp), %xmm7
/* Remove space for stackLayout so stack arguments are placed
correctly for the call. */
.LCFI5:
addq $176, %rsp
.LCFI6:
/* Call the user function. */
call *-48(%rbp)
/* Make stack space for the return_value struct. */
subq $64, %rsp
/* Fill in all potential return values to this struct. */
movq %rax, (%rsp)
movq %rdx, 8(%rsp)
movaps %xmm0, 16(%rsp)
movaps %xmm1, 32(%rsp)
fstpt 48(%rsp)
/* Now call ffi_fill_return_value. */
movq %rsp, %rdi /* struct return_value */
movq -24(%rbp), %rsi /* ecif */
movq -16(%rbp), %rax /* &ffi_fill_return_value */
call *%rax /* call it */
/* And the work is done. */
leave
ret
.LFE1:
.ffi_call_UNIX64_end:
.size ffi_call_UNIX64,.ffi_call_UNIX64_end-ffi_call_UNIX64
.text
.align 2
.globl float2sse
.type float2sse,@function
float2sse:
/* Save the contents of this sse-float in a pointer. */
movaps %xmm0, (%rdi)
ret
.align 2
.globl floatfloat2sse
.type floatfloat2sse,@function
floatfloat2sse:
/* Save the contents of these two sse-floats in a pointer. */
movq (%rdi), %xmm0
movaps %xmm0, (%rsi)
ret
.align 2
.globl double2sse
.type double2sse,@function
double2sse:
/* Save the contents of this sse-double in a pointer. */
movaps %xmm0, (%rdi)
ret
.align 2
.globl sse2float
.type sse2float,@function
sse2float:
/* Save the contents of this sse-float in a pointer. */
movaps (%rdi), %xmm0
ret
.align 2
.globl sse2double
.type sse2double,@function
sse2double:
/* Save the contents of this pointer in a sse-double. */
movaps (%rdi), %xmm0
ret
.align 2
.globl sse2floatfloat
.type sse2floatfloat,@function
sse2floatfloat:
/* Save the contents of this pointer in two sse-floats. */
movaps (%rdi), %xmm0
movq %xmm0, (%rsi)
ret
.align 2
.globl ffi_closure_UNIX64
.type ffi_closure_UNIX64,@function
ffi_closure_UNIX64:
.LFB2:
pushq %rbp
.LCFI10:
movq %rsp, %rbp
.LCFI11:
subq $240, %rsp
.LCFI12:
movq %rdi, -176(%rbp)
movq %rsi, -168(%rbp)
movq %rdx, -160(%rbp)
movq %rcx, -152(%rbp)
movq %r8, -144(%rbp)
movq %r9, -136(%rbp)
/* FIXME: We can avoid all this stashing of XMM registers by
(in ffi_prep_closure) computing the number of
floating-point args and moving it into %rax before calling
this function. Once this is done, uncomment the next few
lines and only the essential XMM registers will be written
to memory. This is a significant saving. */
/* movzbl %al, %eax */
/* movq %rax, %rdx */
/* leaq 0(,%rdx,4), %rax */
/* leaq 2f(%rip), %rdx */
/* subq %rax, %rdx */
leaq -1(%rbp), %rax
/* jmp *%rdx */
movaps %xmm7, -15(%rax)
movaps %xmm6, -31(%rax)
movaps %xmm5, -47(%rax)
movaps %xmm4, -63(%rax)
movaps %xmm3, -79(%rax)
movaps %xmm2, -95(%rax)
movaps %xmm1, -111(%rax)
movaps %xmm0, -127(%rax)
2:
movl %edi, -180(%rbp)
movl $0, -224(%rbp)
movl $48, -220(%rbp)
leaq 16(%rbp), %rax
movq %rax, -216(%rbp)
leaq -176(%rbp), %rdx
movq %rdx, -208(%rbp)
leaq -224(%rbp), %rsi
movq %r10, %rdi
movq %rsp, %rdx
call ffi_closure_UNIX64_inner@PLT
cmpl $FFI_TYPE_FLOAT, %eax
je 1f
cmpl $FFI_TYPE_DOUBLE, %eax
je 2f
cmpl $FFI_TYPE_LONGDOUBLE, %eax
je 3f
cmpl $FFI_TYPE_STRUCT, %eax
je 4f
popq %rax
leave
ret
1:
2:
3:
movaps -240(%rbp), %xmm0
leave
ret
4:
leave
ret
.LFE2:
.section .eh_frame,"a",@progbits
.Lframe0:
.long .LECIE1-.LSCIE1
.LSCIE1:
.long 0x0
.byte 0x1
.string "zR"
.uleb128 0x1
.sleb128 -8
.byte 0x10
.uleb128 0x1
.byte 0x1b
.byte 0xc
.uleb128 0x7
.uleb128 0x8
.byte 0x90
.uleb128 0x1
.align 8
.LECIE1:
.LSFDE1:
.long .LEFDE1-.LASFDE1
.LASFDE1:
.long .LASFDE1-.Lframe0
.long .LFB1-.
.long .LFE1-.LFB1
.uleb128 0x0
.byte 0x4 # DW_CFA_advance_loc4
.long .LCFI0-.LFB1
.byte 0xe # DW_CFA_def_cfa_offset
.uleb128 0x10
.byte 0x86 # DW_CFA_offset: r6 at cfa-16
.uleb128 0x2
.byte 0x4 # DW_CFA_advance_loc4
.long .LCFI1-.LCFI0
.byte 0x86 # DW_CFA_offset: r6 at cfa-16
.uleb128 0x2
.byte 0xd # DW_CFA_def_cfa_reg: r6
.uleb128 0x6
.align 8
.LEFDE1:
.LSFDE3:
.long .LEFDE3-.LASFDE3 # FDE Length
.LASFDE3:
.long .LASFDE3-.Lframe0 # FDE CIE offset
.long .LFB2-. # FDE initial location
.long .LFE2-.LFB2 # FDE address range
.uleb128 0x0 # Augmentation size
.byte 0x4 # DW_CFA_advance_loc4
.long .LCFI10-.LFB2
.byte 0xe # DW_CFA_def_cfa_offset
.uleb128 0x10
.byte 0x86 # DW_CFA_offset, column 0x6
.uleb128 0x2
.byte 0x4 # DW_CFA_advance_loc4
.long .LCFI11-.LCFI10
.byte 0xd # DW_CFA_def_cfa_register
.uleb128 0x6
.align 8
.LEFDE3:
#endif /* __x86_64__ */