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Diffstat (limited to 'sysdeps/i386/sysdep.h')
| -rw-r--r-- | sysdeps/i386/sysdep.h | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/sysdeps/i386/sysdep.h b/sysdeps/i386/sysdep.h deleted file mode 100644 index d2b0860b99..0000000000 --- a/sysdeps/i386/sysdep.h +++ /dev/null @@ -1,159 +0,0 @@ -/* Assembler macros for i386. - Copyright (C) 1991-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdeps/generic/sysdep.h> - -#include <features.h> /* For __GNUC_PREREQ. */ - -/* It is desirable that the names of PIC thunks match those used by - GCC so that multiple copies are eliminated by the linker. Because - GCC 4.6 and earlier use __i686 in the names, it is necessary to - override that predefined macro. */ -#if defined __i686 && defined __ASSEMBLER__ -#undef __i686 -#define __i686 __i686 -#endif - -#ifdef __ASSEMBLER__ -# define GET_PC_THUNK(reg) __x86.get_pc_thunk.reg -#else -# define GET_PC_THUNK_STR(reg) "__x86.get_pc_thunk." #reg -#endif - -#ifdef __ASSEMBLER__ - -/* Syntactic details of assembler. */ - -/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */ -#define ALIGNARG(log2) 1<<log2 -#define ASM_SIZE_DIRECTIVE(name) .size name,.-name; - - -/* Define an entry point visible from C. - - There is currently a bug in gdb which prevents us from specifying - incomplete stabs information. Fake some entries here which specify - the current source file. */ -#define ENTRY(name) \ - .globl C_SYMBOL_NAME(name); \ - .type C_SYMBOL_NAME(name),@function; \ - .align ALIGNARG(4); \ - C_LABEL(name) \ - cfi_startproc; \ - CALL_MCOUNT - -#undef END -#define END(name) \ - cfi_endproc; \ - ASM_SIZE_DIRECTIVE(name) - -#define ENTRY_CHK(name) ENTRY (name) -#define END_CHK(name) END (name) - -/* If compiled for profiling, call `mcount' at the start of each function. */ -#ifdef PROF -/* The mcount code relies on a normal frame pointer being on the stack - to locate our caller, so push one just for its benefit. */ -#define CALL_MCOUNT \ - pushl %ebp; cfi_adjust_cfa_offset (4); movl %esp, %ebp; \ - cfi_def_cfa_register (ebp); call JUMPTARGET(mcount); \ - popl %ebp; cfi_def_cfa (esp, 4); -#else -#define CALL_MCOUNT /* Do nothing. */ -#endif - -/* Since C identifiers are not normally prefixed with an underscore - on this system, the asm identifier `syscall_error' intrudes on the - C name space. Make sure we use an innocuous name. */ -#define syscall_error __syscall_error -#define mcount _mcount - -#define PSEUDO(name, syscall_name, args) \ - .globl syscall_error; \ -lose: SYSCALL_PIC_SETUP \ - jmp JUMPTARGET(syscall_error); \ - ENTRY (name) \ - DO_CALL (syscall_name, args); \ - jb lose - -#undef PSEUDO_END -#define PSEUDO_END(name) \ - END (name) - -# define SETUP_PIC_REG(reg) \ - .ifndef GET_PC_THUNK(reg); \ - .section .gnu.linkonce.t.GET_PC_THUNK(reg),"ax",@progbits; \ - .globl GET_PC_THUNK(reg); \ - .hidden GET_PC_THUNK(reg); \ - .p2align 4; \ - .type GET_PC_THUNK(reg),@function; \ -GET_PC_THUNK(reg): \ - movl (%esp), %e##reg; \ - ret; \ - .size GET_PC_THUNK(reg), . - GET_PC_THUNK(reg); \ - .previous; \ - .endif; \ - call GET_PC_THUNK(reg) - -# define LOAD_PIC_REG(reg) \ - SETUP_PIC_REG(reg); addl $_GLOBAL_OFFSET_TABLE_, %e##reg - -#undef JUMPTARGET -#ifdef PIC -#define JUMPTARGET(name) name##@PLT -#define SYSCALL_PIC_SETUP \ - pushl %ebx; \ - cfi_adjust_cfa_offset (4); \ - call 0f; \ -0: popl %ebx; \ - cfi_adjust_cfa_offset (-4); \ - addl $_GLOBAL_OFFSET_TABLE_+[.-0b], %ebx; - -#else -#define JUMPTARGET(name) name -#define SYSCALL_PIC_SETUP /* Nothing. */ -#endif - -/* Local label name for asm code. */ -#ifndef L -#define L(name) .L##name -#endif - -#define atom_text_section .section ".text.atom", "ax" - -#else /* __ASSEMBLER__ */ - -# define SETUP_PIC_REG_STR(reg) \ - ".ifndef " GET_PC_THUNK_STR (reg) "\n" \ - ".section .gnu.linkonce.t." GET_PC_THUNK_STR (reg) ",\"ax\",@progbits\n" \ - ".globl " GET_PC_THUNK_STR (reg) "\n" \ - ".hidden " GET_PC_THUNK_STR (reg) "\n" \ - ".p2align 4\n" \ - ".type " GET_PC_THUNK_STR (reg) ",@function\n" \ -GET_PC_THUNK_STR (reg) ":" \ - "movl (%%esp), %%e" #reg "\n" \ - "ret\n" \ - ".size " GET_PC_THUNK_STR (reg) ", . - " GET_PC_THUNK_STR (reg) "\n" \ - ".previous\n" \ - ".endif\n" \ - "call " GET_PC_THUNK_STR (reg) - -# define LOAD_PIC_REG_STR(reg) \ - SETUP_PIC_REG_STR (reg) "\naddl $_GLOBAL_OFFSET_TABLE_, %%e" #reg - -#endif /* __ASSEMBLER__ */ |