1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _ASM_X86_ELF_H 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _ASM_X86_ELF_H 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ELF register definitions.. 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/ptrace.h> 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/user.h> 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/auxvec.h> 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef unsigned long elf_greg_t; 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef elf_greg_t elf_gregset_t[ELF_NGREG]; 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef struct user_i387_struct elf_fpregset_t; 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __i386__ 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef struct user_fxsr_struct elf_fpxregset_t; 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_NONE 0 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_32 1 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_PC32 2 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_GOT32 3 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_PLT32 4 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_COPY 5 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_GLOB_DAT 6 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_JMP_SLOT 7 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_RELATIVE 8 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_GOTOFF 9 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_GOTPC 10 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_386_NUM 11 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * These are used to set parameters in the core dumps. 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CLASS ELFCLASS32 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_DATA ELFDATA2LSB 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_ARCH EM_386 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* x86-64 relocation types */ 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_NONE 0 /* No reloc */ 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_64 1 /* Direct 64 bit */ 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_PC32 2 /* PC relative 32 bit signed */ 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_GOT32 3 /* 32 bit GOT entry */ 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_PLT32 4 /* 32 bit PLT address */ 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_COPY 5 /* Copy symbol at runtime */ 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_RELATIVE 8 /* Adjust by program base */ 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru offset to GOT */ 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_32 10 /* Direct 32 bit zero extended */ 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_32S 11 /* Direct 32 bit sign extended */ 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_16 12 /* Direct 16 bit zero extended */ 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */ 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_8 14 /* Direct 8 bit sign extended */ 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */ 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define R_X86_64_NUM 16 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * These are used to set parameters in the core dumps. 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CLASS ELFCLASS64 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_DATA ELFDATA2LSB 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_ARCH EM_X86_64 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef CONFIG_X86_32 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/processor.h> 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/system.h> /* for savesegment */ 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/desc.h> 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This is used to ensure we don't load something for the wrong architecture. 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define elf_check_arch(x) \ 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru contains a pointer to a function which might be registered using `atexit'. 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru This provides a mean for the dynamic linker to call DT_FINI functions for 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru shared libraries that have been loaded before the code runs. 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru A value of 0 tells we have no such handler. 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru We might as well make sure everything else is cleared too (except for %esp), 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru just to make things more deterministic. 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_PLAT_INIT(_r, load_addr) do { \ 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \ 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru _r->esi = 0; _r->edi = 0; _r->ebp = 0; \ 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru _r->eax = 0; \ 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} while (0) 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru now struct_user_regs, they are different) */ 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CORE_COPY_REGS(pr_reg, regs) \ 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[0] = regs->ebx; \ 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[1] = regs->ecx; \ 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[2] = regs->edx; \ 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[3] = regs->esi; \ 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[4] = regs->edi; \ 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[5] = regs->ebp; \ 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[6] = regs->eax; \ 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[7] = regs->xds & 0xffff; \ 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[8] = regs->xes & 0xffff; \ 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[9] = regs->xfs & 0xffff; \ 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru savesegment(gs,pr_reg[10]); \ 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[11] = regs->orig_eax; \ 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[12] = regs->eip; \ 121c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[13] = regs->xcs & 0xffff; \ 122c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[14] = regs->eflags; \ 123c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[15] = regs->esp; \ 124c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pr_reg[16] = regs->xss & 0xffff; 125c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 126c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_PLATFORM (utsname()->machine) 127c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define set_personality_64bit() do { } while (0) 128c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern unsigned int vdso_enabled; 129c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 130c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else /* CONFIG_X86_32 */ 131c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 132c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/processor.h> 133c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 134c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 135c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This is used to ensure we don't load something for the wrong architecture. 136c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 137c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define elf_check_arch(x) \ 138c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru ((x)->e_machine == EM_X86_64) 139c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 140c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_PLAT_INIT(_r, load_addr) do { \ 141c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct task_struct *cur = current; \ 142c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->rbx = 0; (_r)->rcx = 0; (_r)->rdx = 0; \ 143c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->rsi = 0; (_r)->rdi = 0; (_r)->rbp = 0; \ 144c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->rax = 0; \ 145c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r8 = 0; \ 146c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r9 = 0; \ 147c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r10 = 0; \ 148c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r11 = 0; \ 149c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r12 = 0; \ 150c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r13 = 0; \ 151c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r14 = 0; \ 152c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (_r)->r15 = 0; \ 153c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru cur->thread.fs = 0; cur->thread.gs = 0; \ 154c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru cur->thread.fsindex = 0; cur->thread.gsindex = 0; \ 155c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru cur->thread.ds = 0; cur->thread.es = 0; \ 156c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru clear_thread_flag(TIF_IA32); \ 157c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} while (0) 158c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 159c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is 160c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru now struct_user_regs, they are different). Assumes current is the process 161c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru getting dumped. */ 162c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 163c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \ 164c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned v; \ 165c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[0] = (regs)->r15; \ 166c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[1] = (regs)->r14; \ 167c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[2] = (regs)->r13; \ 168c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[3] = (regs)->r12; \ 169c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[4] = (regs)->rbp; \ 170c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[5] = (regs)->rbx; \ 171c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[6] = (regs)->r11; \ 172c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[7] = (regs)->r10; \ 173c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[8] = (regs)->r9; \ 174c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[9] = (regs)->r8; \ 175c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[10] = (regs)->rax; \ 176c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[11] = (regs)->rcx; \ 177c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[12] = (regs)->rdx; \ 178c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[13] = (regs)->rsi; \ 179c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[14] = (regs)->rdi; \ 180c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[15] = (regs)->orig_rax; \ 181c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[16] = (regs)->rip; \ 182c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[17] = (regs)->cs; \ 183c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[18] = (regs)->eflags; \ 184c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[19] = (regs)->rsp; \ 185c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[20] = (regs)->ss; \ 186c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[21] = current->thread.fs; \ 187c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (pr_reg)[22] = current->thread.gs; \ 188c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \ 189c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \ 190c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \ 191c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \ 192c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} while(0); 193c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 194c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* I'm not sure if we can use '-' here */ 195c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_PLATFORM ("x86_64") 196c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void set_personality_64bit(void); 197c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int vdso_enabled; 198c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 199c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* !CONFIG_X86_32 */ 200c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 201c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define USE_ELF_CORE_DUMP 202c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_EXEC_PAGESIZE 4096 203c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 204c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 205c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru use of this is to invoke "./ld.so someprog" to test out a new version of 206c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru the loader. We need to make sure that it is out of the way of the program 207c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru that it will "exec", and that there is sufficient room for the brk. */ 208c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 209c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) 210c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 211c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* This yields a mask that user programs can use to figure out what 212c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru instruction set this CPU supports. This could be done in user space, 213c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru but it's not easy, and we've already done it here. */ 214c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 215c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_HWCAP (boot_cpu_data.x86_capability[0]) 216c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 217c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* This yields a string that ld.so will use to load implementation 218c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru specific libraries for optimization. This is more specific in 219c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru intent than poking at uname or /proc/cpuinfo. 220c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 221c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru For the moment, we have only optimizations for the Intel generations, 222c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru but that could change... */ 223c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 224c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define SET_PERSONALITY(ex, ibcs2) set_personality_64bit() 225c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 226c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 227c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * An executable for which elf_read_implies_exec() returns TRUE will 228c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * have the READ_IMPLIES_EXEC personality flag set automatically. 229c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 230c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define elf_read_implies_exec(ex, executable_stack) \ 231c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (executable_stack != EXSTACK_DISABLE_X) 232c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 233c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct task_struct; 234c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 235c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int dump_task_regs (struct task_struct *, elf_gregset_t *); 236c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int dump_task_fpu (struct task_struct *, elf_fpregset_t *); 237c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 238c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs) 239c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs) 240c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 241c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef CONFIG_X86_32 242c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int dump_task_extended_fpu (struct task_struct *, 243c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct user_fxsr_struct *); 244c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) \ 245c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru dump_task_extended_fpu(tsk, elf_xfpregs) 246c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG 247c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 248c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO)) 249c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) 250c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_PRELINK 0 251c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 252c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_SYM(x) \ 253c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (VDSO_CURRENT_BASE + (unsigned long)(x) - VDSO_PRELINK) 254c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 255c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_HIGH_EHDR ((const struct elfhdr *) VDSO_HIGH_BASE) 256c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_EHDR ((const struct elfhdr *) VDSO_CURRENT_BASE) 257c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 258c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void __kernel_vsyscall; 259c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 260c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define VDSO_ENTRY VDSO_SYM(&__kernel_vsyscall) 261c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 262c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 263c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 264c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ARCH_DLINFO \ 265c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querudo if (vdso_enabled) { \ 266c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ 267c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \ 268c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} while (0) 269c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 270c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else /* CONFIG_X86_32 */ 271c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 272c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 1GB for 64bit, 8MB for 32bit */ 273c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff) 274c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 275c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ARCH_DLINFO \ 276c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querudo if (vdso_enabled) { \ 277c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\ 278c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} while (0) 279c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 280c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* !CONFIG_X86_32 */ 281c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 282c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct linux_binprm; 283c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 284c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 285c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int arch_setup_additional_pages(struct linux_binprm *bprm, 286c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int executable_stack); 287c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 288c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 289c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 290c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 291