1/* 2 * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) 3 * Licensed under the GPL 4 */ 5#ifndef __UM_ELF_I386_H 6#define __UM_ELF_I386_H 7 8#include <asm/user.h> 9 10#define R_386_NONE 0 11#define R_386_32 1 12#define R_386_PC32 2 13#define R_386_GOT32 3 14#define R_386_PLT32 4 15#define R_386_COPY 5 16#define R_386_GLOB_DAT 6 17#define R_386_JMP_SLOT 7 18#define R_386_RELATIVE 8 19#define R_386_GOTOFF 9 20#define R_386_GOTPC 10 21#define R_386_NUM 11 22 23typedef unsigned long elf_greg_t; 24 25#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) 26typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 27 28typedef struct user_i387_struct elf_fpregset_t; 29 30/* 31 * This is used to ensure we don't load something for the wrong architecture. 32 */ 33#define elf_check_arch(x) \ 34 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) 35 36#define ELF_CLASS ELFCLASS32 37#define ELF_DATA ELFDATA2LSB 38#define ELF_ARCH EM_386 39 40#define ELF_PLAT_INIT(regs, load_addr) do { \ 41 PT_REGS_EBX(regs) = 0; \ 42 PT_REGS_ECX(regs) = 0; \ 43 PT_REGS_EDX(regs) = 0; \ 44 PT_REGS_ESI(regs) = 0; \ 45 PT_REGS_EDI(regs) = 0; \ 46 PT_REGS_EBP(regs) = 0; \ 47 PT_REGS_EAX(regs) = 0; \ 48} while(0) 49 50#define USE_ELF_CORE_DUMP 51#define ELF_EXEC_PAGESIZE 4096 52 53#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) 54 55/* Shamelessly stolen from include/asm-i386/elf.h */ 56 57#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \ 58 pr_reg[0] = PT_REGS_EBX(regs); \ 59 pr_reg[1] = PT_REGS_ECX(regs); \ 60 pr_reg[2] = PT_REGS_EDX(regs); \ 61 pr_reg[3] = PT_REGS_ESI(regs); \ 62 pr_reg[4] = PT_REGS_EDI(regs); \ 63 pr_reg[5] = PT_REGS_EBP(regs); \ 64 pr_reg[6] = PT_REGS_EAX(regs); \ 65 pr_reg[7] = PT_REGS_DS(regs); \ 66 pr_reg[8] = PT_REGS_ES(regs); \ 67 /* fake once used fs and gs selectors? */ \ 68 pr_reg[9] = PT_REGS_DS(regs); \ 69 pr_reg[10] = PT_REGS_DS(regs); \ 70 pr_reg[11] = PT_REGS_SYSCALL_NR(regs); \ 71 pr_reg[12] = PT_REGS_IP(regs); \ 72 pr_reg[13] = PT_REGS_CS(regs); \ 73 pr_reg[14] = PT_REGS_EFLAGS(regs); \ 74 pr_reg[15] = PT_REGS_SP(regs); \ 75 pr_reg[16] = PT_REGS_SS(regs); \ 76} while(0); 77 78extern long elf_aux_hwcap; 79#define ELF_HWCAP (elf_aux_hwcap) 80 81extern char * elf_aux_platform; 82#define ELF_PLATFORM (elf_aux_platform) 83 84#define SET_PERSONALITY(ex, ibcs2) do ; while(0) 85 86extern unsigned long vsyscall_ehdr; 87extern unsigned long vsyscall_end; 88extern unsigned long __kernel_vsyscall; 89 90#define VSYSCALL_BASE vsyscall_ehdr 91#define VSYSCALL_END vsyscall_end 92 93/* 94 * This is the range that is readable by user mode, and things 95 * acting like user mode such as get_user_pages. 96 */ 97#define FIXADDR_USER_START VSYSCALL_BASE 98#define FIXADDR_USER_END VSYSCALL_END 99 100/* 101 * Architecture-neutral AT_ values in 0-17, leave some room 102 * for more of them, start the x86-specific ones at 32. 103 */ 104#define AT_SYSINFO 32 105#define AT_SYSINFO_EHDR 33 106 107#define ARCH_DLINFO \ 108do { \ 109 if ( vsyscall_ehdr ) { \ 110 NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall); \ 111 NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr); \ 112 } \ 113} while (0) 114 115/* 116 * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out 117 * extra segments containing the vsyscall DSO contents. Dumping its 118 * contents makes post-mortem fully interpretable later without matching up 119 * the same kernel and hardware config to see what PC values meant. 120 * Dumping its extra ELF program headers includes all the other information 121 * a debugger needs to easily find how the vsyscall DSO was being used. 122 */ 123#define ELF_CORE_EXTRA_PHDRS \ 124 (vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0 ) 125 126#define ELF_CORE_WRITE_EXTRA_PHDRS \ 127if ( vsyscall_ehdr ) { \ 128 const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \ 129 const struct elf_phdr *const phdrp = \ 130 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \ 131 int i; \ 132 Elf32_Off ofs = 0; \ 133 for (i = 0; i < ehdrp->e_phnum; ++i) { \ 134 struct elf_phdr phdr = phdrp[i]; \ 135 if (phdr.p_type == PT_LOAD) { \ 136 ofs = phdr.p_offset = offset; \ 137 offset += phdr.p_filesz; \ 138 } \ 139 else \ 140 phdr.p_offset += ofs; \ 141 phdr.p_paddr = 0; /* match other core phdrs */ \ 142 DUMP_WRITE(&phdr, sizeof(phdr)); \ 143 } \ 144} 145#define ELF_CORE_WRITE_EXTRA_DATA \ 146if ( vsyscall_ehdr ) { \ 147 const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \ 148 const struct elf_phdr *const phdrp = \ 149 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \ 150 int i; \ 151 for (i = 0; i < ehdrp->e_phnum; ++i) { \ 152 if (phdrp[i].p_type == PT_LOAD) \ 153 DUMP_WRITE((void *) phdrp[i].p_vaddr, \ 154 phdrp[i].p_filesz); \ 155 } \ 156} 157 158#endif 159 160/* 161 * Overrides for Emacs so that we follow Linus's tabbing style. 162 * Emacs will notice this stuff at the end of the file and automatically 163 * adjust the settings for this buffer only. This must remain at the end 164 * of the file. 165 * --------------------------------------------------------------------------- 166 * Local variables: 167 * c-file-style: "linux" 168 * End: 169 */ 170