1 /* 2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.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 #include "skas.h" 10 11 #define R_386_NONE 0 12 #define R_386_32 1 13 #define R_386_PC32 2 14 #define R_386_GOT32 3 15 #define R_386_PLT32 4 16 #define R_386_COPY 5 17 #define R_386_GLOB_DAT 6 18 #define R_386_JMP_SLOT 7 19 #define R_386_RELATIVE 8 20 #define R_386_GOTOFF 9 21 #define R_386_GOTPC 10 22 #define R_386_NUM 11 23 24 typedef unsigned long elf_greg_t; 25 26 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) 27 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 28 29 typedef struct user_i387_struct elf_fpregset_t; 30 31 /* 32 * This is used to ensure we don't load something for the wrong architecture. 33 */ 34 #define elf_check_arch(x) \ 35 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) 36 37 #define ELF_CLASS ELFCLASS32 38 #define ELF_DATA ELFDATA2LSB 39 #define ELF_ARCH EM_386 40 41 #define ELF_PLAT_INIT(regs, load_addr) do { \ 42 PT_REGS_EBX(regs) = 0; \ 43 PT_REGS_ECX(regs) = 0; \ 44 PT_REGS_EDX(regs) = 0; \ 45 PT_REGS_ESI(regs) = 0; \ 46 PT_REGS_EDI(regs) = 0; \ 47 PT_REGS_EBP(regs) = 0; \ 48 PT_REGS_EAX(regs) = 0; \ 49 } while (0) 50 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 78 #define task_pt_regs(t) (&(t)->thread.regs) 79 80 struct task_struct; 81 82 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu); 83 84 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu) 85 86 extern long elf_aux_hwcap; 87 #define ELF_HWCAP (elf_aux_hwcap) 88 89 extern char * elf_aux_platform; 90 #define ELF_PLATFORM (elf_aux_platform) 91 92 #define SET_PERSONALITY(ex) do { } while (0) 93 94 extern unsigned long vsyscall_ehdr; 95 extern unsigned long vsyscall_end; 96 extern unsigned long __kernel_vsyscall; 97 98 #define VSYSCALL_BASE vsyscall_ehdr 99 #define VSYSCALL_END vsyscall_end 100 101 /* 102 * This is the range that is readable by user mode, and things 103 * acting like user mode such as get_user_pages. 104 */ 105 #define FIXADDR_USER_START VSYSCALL_BASE 106 #define FIXADDR_USER_END VSYSCALL_END 107 108 /* 109 * Architecture-neutral AT_ values in 0-17, leave some room 110 * for more of them, start the x86-specific ones at 32. 111 */ 112 #define AT_SYSINFO 32 113 #define AT_SYSINFO_EHDR 33 114 115 #define ARCH_DLINFO \ 116 do { \ 117 if ( vsyscall_ehdr ) { \ 118 NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall); \ 119 NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr); \ 120 } \ 121 } while (0) 122 123 #endif 124