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/* Copyright 2013 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file.
MakeFunc 386 assembly code. */
#include "config.h"
.globl reflect.makeFuncStub
#ifdef __ELF__
.type reflect.makeFuncStub,@function
#endif
reflect.makeFuncStub:
.LFB1:
/* Go does not provide any equivalent to the regparm function
attribute, so on Go we do not need to worry about passing
parameters in registers. We just pass a pointer to the
arguments on the stack.
We do need to pick up the return values, though, so we pass
a pointer to a struct that looks like this.
struct {
esp uint32 // 0x0
eax uint32 // 0x4
st0 float64 // 0x8
sr bool // 0x10
sf bool // 0x11
}
The sr field is set by the function to a non-zero value if
the function takes a struct hidden pointer that must be
popped off the stack. */
pushl %ebp
.LCFI0:
movl %esp, %ebp
.LCFI1:
pushl %ebx /* In case this is PIC. */
subl $36, %esp /* Enough for args and to align stack. */
.LCFI2:
#ifdef __PIC__
call __x86.get_pc_thunk.bx
addl $_GLOBAL_OFFSET_TABLE_, %ebx
#endif
leal 8(%ebp), %eax /* Set esp field in struct. */
movl %eax, -24(%ebp)
/* For MakeFunc functions that call recover. */
movl 4(%ebp), %eax
movl %eax, (%esp)
#ifdef __PIC__
call __go_makefunc_can_recover@PLT
#else
call __go_makefunc_can_recover
#endif
#ifdef __PIC__
call __go_get_closure@PLT
#else
call __go_get_closure
#endif
movl %eax, 4(%esp)
leal -24(%ebp), %eax
movl %eax, (%esp)
#ifdef __PIC__
call reflect.MakeFuncStubGo@PLT
#else
call reflect.MakeFuncStubGo
#endif
/* MakeFunc functions can no longer call recover. */
#ifdef __PIC__
call __go_makefunc_returning@PLT
#else
call __go_makefunc_returning
#endif
/* Set return registers. */
movl -20(%ebp), %eax
cmpb $0, -7(%ebp)
je 2f
fldl -16(%ebp)
#ifdef __SSE2__
/* In case we are compiling with -msseregparm. This won't work
correctly if only SSE1 is supported, but that seems unlikely. */
movsd -16(%ebp), %xmm0
#endif
2:
movb -8(%ebp), %dl
addl $36, %esp
popl %ebx
.LCFI3:
popl %ebp
.LCFI4:
testb %dl,%dl
jne 1f
ret
1:
ret $4
.LFE1:
#ifdef __ELF__
.size reflect.makeFuncStub, . - reflect.makeFuncStub
#endif
#ifdef __PIC__
#ifdef HAVE_AS_COMDAT_GAS
.section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
#else
/* Sun as needs a different syntax. */
.section .text.__x86.get_pc_thunk.bx%__x86.get_pc_thunk.bx,"ax",@progbits
.group __x86.get_pc_thunk.bx,.text.__x86.get_pc_thunk.bx%__x86.get_pc_thunk.bx,#comdat
#endif
.globl __x86.get_pc_thunk.bx
.hidden __x86.get_pc_thunk.bx
#ifdef __ELF__
.type __x86.get_pc_thunk.bx, @function
#endif
__x86.get_pc_thunk.bx:
.LFB2:
movl (%esp), %ebx
ret
.LFE2:
#ifdef __ELF__
.size __x86.get_pc_thunk.bx, . - __x86.get_pc_thunk.bx
#endif
#endif
#ifdef __ELF__
#if defined __PIC__
# if defined __sun__ && defined __svr4__
/* 32-bit Solaris 2/x86 uses datarel encoding for PIC. GNU ld before 2.22
doesn't correctly sort .eh_frame_hdr with mixed encodings, so match this. */
# define FDE_ENCODING 0x30 /* datarel */
# define FDE_ENCODE(X) X@GOTOFF
# else
# define FDE_ENCODING 0x1b /* pcrel sdata4 */
# if defined HAVE_AS_X86_PCREL
# define FDE_ENCODE(X) X-.
# else
# define FDE_ENCODE(X) X@rel
# endif
# endif
#else
# define FDE_ENCODING 0 /* absolute */
# define FDE_ENCODE(X) X
#endif
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.long .LECIE1-.LSCIE1 /* Length of Common Information Entry */
.LSCIE1:
.long 0x0 /* CIE Identifier Tag */
.byte 0x1 /* CIE Version */
.ascii "zR\0" /* CIE Augmentation */
.byte 0x1 /* .uleb128 0x1; CIE Code Alignment Factor */
.byte 0x7c /* .sleb128 -4; CIE Data Alignment Factor */
.byte 0x8 /* CIE RA Column */
.byte 0x1 /* .uleb128 0x1; Augmentation size */
.byte FDE_ENCODING
.byte 0xc /* DW_CFA_def_cfa */
.byte 0x4 /* .uleb128 0x4 */
.byte 0x4 /* .uleb128 0x4 */
.byte 0x88 /* DW_CFA_offset, column 0x8 */
.byte 0x1 /* .uleb128 0x1 */
.align 4
.LECIE1:
.LSFDE1:
.long .LEFDE1-.LASFDE1 /* FDE Length */
.LASFDE1:
.long .LASFDE1-.Lframe1 /* FDE CIE offset */
.long FDE_ENCODE(.LFB1) /* FDE initial location */
.long .LFE1-.LFB1 /* FDE address range */
.byte 0x0 /* .uleb128 0x0; Augmentation size */
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI0-.LFB1
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x8 /* .uleb128 0x8 */
.byte 0x85 /* DW_CFA_offset, column 0x5 */
.byte 0x2 /* .uleb128 0x2 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI1-.LCFI0
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0x5 /* .uleb128 0x5 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI2-.LCFI1
.byte 0x83 /* .DW_CFA_offset, column 0x3 */
.byte 0x3 /* .uleb128 0x3 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI3-.LCFI2
.byte 0xc3 /* DW_CFA_restore, column 0x3 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI4-.LCFI3
.byte 0xc5 /* DW_CFA_restore, column 0x5 */
.byte 0xc /* DW_CFA_def_cfa */
.byte 0x4 /* .uleb128 0x4 */
.byte 0x4 /* .uleb128 0x4 */
.align 4
.LEFDE1:
#ifdef __PIC__
.LSFDE2:
.long .LEFDE2-.LASFDE2 /* FDE Length */
.LASFDE2:
.long .LASFDE2-.Lframe1 /* FDE CIE offset */
.long FDE_ENCODE(.LFB2) /* FDE initial location */
.long .LFE2-.LFB2 /* FDE address range */
.byte 0x0 /* .uleb128 0x0; Augmentation size */
.align 4
.LEFDE2:
#endif /* __PIC__ */
#endif /* __ELF__ */
#if defined(__ELF__) && defined(__linux__)
.section .note.GNU-stack,"",@progbits
.section .note.GNU-split-stack,"",@progbits
.section .note.GNU-no-split-stack,"",@progbits
#endif
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