ag/cpython-source-deps
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86: Convert to gas generated unwind info

Browse Source
This commit is contained in:
Richard Henderson
2014-10-31 12:07:02 -07:00
parent e7b0056d60
commit 159d3788eb
1 changed files with 20 additions and 153 deletions
Download Patch File Download Diff File Expand all files Collapse all files

173
src/x86/sysv.S
View File

@@ -30,6 +30,7 @@
#define LIBFFI_ASM
#include <fficonfig.h>
#include <ffi.h>
#include <ffi_cfi.h>
.text
@@ -40,11 +41,12 @@
.type ffi_call_SYSV,@function
ffi_call_SYSV:
.LFB1:
cfi_startproc
pushl %ebp
.LCFI0:
cfi_adjust_cfa_offset(4)
cfi_rel_offset(%ebp, 0)
movl %esp,%ebp
.LCFI1:
cfi_def_cfa_register(%ebp)
/* Make room for all of the new args. */
movl 16(%ebp),%ecx
subl %ecx,%esp
@@ -163,7 +165,7 @@ epilogue:
movl %ebp,%esp
popl %ebp
ret
.LFE1:
cfi_endproc
.ffi_call_SYSV_end:
.size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
@@ -173,11 +175,12 @@ FFI_HIDDEN (ffi_closure_SYSV)
.type ffi_closure_SYSV, @function
ffi_closure_SYSV:
.LFB2:
cfi_startproc
pushl %ebp
.LCFI2:
cfi_adjust_cfa_offset(4)
cfi_rel_offset(%ebp, 0)
movl %esp, %ebp
.LCFI3:
cfi_def_cfa_register(%ebp)
subl $40, %esp
leal -24(%ebp), %edx
movl %edx, -12(%ebp) /* resp */
@@ -199,12 +202,13 @@ ffi_closure_SYSV:
call ffi_closure_SYSV_inner
#else
movl %ebx, 8(%esp)
.LCFI7:
cfi_offset(%ebx, -40)
call 1f
1: popl %ebx
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
call ffi_closure_SYSV_inner@PLT
movl 8(%esp), %ebx
cfi_restore(%ebx)
#endif
movl -12(%ebp), %ecx
cmpl $FFI_TYPE_INT, %eax
@@ -251,7 +255,7 @@ ffi_closure_SYSV:
movl %ebp, %esp
popl %ebp
ret $4
.LFE2:
cfi_endproc
.size ffi_closure_SYSV, .-ffi_closure_SYSV
#if !FFI_NO_RAW_API
@@ -278,13 +282,14 @@ FFI_HIDDEN (ffi_closure_raw_SYSV)
.type ffi_closure_raw_SYSV, @function
ffi_closure_raw_SYSV:
.LFB3:
cfi_startproc
pushl %ebp
.LCFI4:
cfi_adjust_cfa_offset(4)
cfi_rel_offset(%ebp, 0)
movl %esp, %ebp
.LCFI5:
cfi_def_cfa_register(%ebp)
pushl %esi
.LCFI6:
cfi_offset(%esi, -12)
subl $36, %esp
movl RAW_CLOSURE_CIF_OFFSET(%eax), %esi /* closure->cif */
movl RAW_CLOSURE_USER_DATA_OFFSET(%eax), %edx /* closure->user_data */
@@ -335,149 +340,11 @@ ffi_closure_raw_SYSV:
movl -24(%ebp), %eax
movl -20(%ebp), %edx
jmp .Lrcls_epilogue
.LFE3:
cfi_endproc
.size ffi_closure_raw_SYSV, .-ffi_closure_raw_SYSV
#endif
#if defined __GNUC__
/* Only emit dwarf unwind info when building with GNU toolchain. */
#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 */
#ifdef HAVE_AS_ASCII_PSEUDO_OP
#ifdef __PIC__
.ascii "zR\0" /* CIE Augmentation */
#else
.ascii "\0" /* CIE Augmentation */
#endif
#elif defined HAVE_AS_STRING_PSEUDO_OP
#ifdef __PIC__
.string "zR" /* CIE Augmentation */
#else
.string "" /* CIE Augmentation */
#endif
#else
#error missing .ascii/.string
#endif
.byte 0x1 /* .uleb128 0x1; CIE Code Alignment Factor */
.byte 0x7c /* .sleb128 -4; CIE Data Alignment Factor */
.byte 0x8 /* CIE RA Column */
#ifdef __PIC__
.byte 0x1 /* .uleb128 0x1; Augmentation size */
.byte FDE_ENCODING
#endif
.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 */
#ifdef __PIC__
.byte 0x0 /* .uleb128 0x0; Augmentation size */
#endif
.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 */
.align 4
.LEFDE1:
.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 */
#ifdef __PIC__
.byte 0x0 /* .uleb128 0x0; Augmentation size */
#endif
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI2-.LFB2
.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 .LCFI3-.LCFI2
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0x5 /* .uleb128 0x5 */
#if !defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE && defined __PIC__
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI7-.LCFI3
.byte 0x83 /* DW_CFA_offset, column 0x3 */
.byte 0xa /* .uleb128 0xa */
#endif
.align 4
.LEFDE2:
#if !FFI_NO_RAW_API
.LSFDE3:
.long .LEFDE3-.LASFDE3 /* FDE Length */
.LASFDE3:
.long .LASFDE3-.Lframe1 /* FDE CIE offset */
.long FDE_ENCODE(.LFB3) /* FDE initial location */
.long .LFE3-.LFB3 /* FDE address range */
#ifdef __PIC__
.byte 0x0 /* .uleb128 0x0; Augmentation size */
#endif
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI4-.LFB3
.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 .LCFI5-.LCFI4
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0x5 /* .uleb128 0x5 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.long .LCFI6-.LCFI5
.byte 0x86 /* DW_CFA_offset, column 0x6 */
.byte 0x3 /* .uleb128 0x3 */
.align 4
.LEFDE3:
#endif
#endif
#endif /* !FFI_NO_RAW_API */
#endif /* ifndef __x86_64__ */
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif