164 lines
4.8 KiB
C
164 lines
4.8 KiB
C
/*
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* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_ELF_I386_H
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#define __UM_ELF_I386_H
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#include <asm/user.h>
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#include "skas.h"
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#define R_386_NONE 0
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#define R_386_32 1
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#define R_386_PC32 2
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#define R_386_GOT32 3
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#define R_386_PLT32 4
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#define R_386_COPY 5
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#define R_386_GLOB_DAT 6
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#define R_386_JMP_SLOT 7
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#define R_386_RELATIVE 8
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#define R_386_GOTOFF 9
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#define R_386_GOTPC 10
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#define R_386_NUM 11
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typedef unsigned long elf_greg_t;
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#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef struct user_i387_struct elf_fpregset_t;
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch(x) \
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(((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
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#define ELF_CLASS ELFCLASS32
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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_386
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#define ELF_PLAT_INIT(regs, load_addr) do { \
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PT_REGS_EBX(regs) = 0; \
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PT_REGS_ECX(regs) = 0; \
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PT_REGS_EDX(regs) = 0; \
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PT_REGS_ESI(regs) = 0; \
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PT_REGS_EDI(regs) = 0; \
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PT_REGS_EBP(regs) = 0; \
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PT_REGS_EAX(regs) = 0; \
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} while (0)
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#define USE_ELF_CORE_DUMP
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#define ELF_EXEC_PAGESIZE 4096
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#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
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/* Shamelessly stolen from include/asm-i386/elf.h */
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#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \
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pr_reg[0] = PT_REGS_EBX(regs); \
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pr_reg[1] = PT_REGS_ECX(regs); \
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pr_reg[2] = PT_REGS_EDX(regs); \
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pr_reg[3] = PT_REGS_ESI(regs); \
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pr_reg[4] = PT_REGS_EDI(regs); \
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pr_reg[5] = PT_REGS_EBP(regs); \
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pr_reg[6] = PT_REGS_EAX(regs); \
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pr_reg[7] = PT_REGS_DS(regs); \
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pr_reg[8] = PT_REGS_ES(regs); \
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/* fake once used fs and gs selectors? */ \
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pr_reg[9] = PT_REGS_DS(regs); \
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pr_reg[10] = PT_REGS_DS(regs); \
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pr_reg[11] = PT_REGS_SYSCALL_NR(regs); \
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pr_reg[12] = PT_REGS_IP(regs); \
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pr_reg[13] = PT_REGS_CS(regs); \
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pr_reg[14] = PT_REGS_EFLAGS(regs); \
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pr_reg[15] = PT_REGS_SP(regs); \
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pr_reg[16] = PT_REGS_SS(regs); \
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} while (0);
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extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
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#define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
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extern long elf_aux_hwcap;
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#define ELF_HWCAP (elf_aux_hwcap)
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extern char * elf_aux_platform;
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#define ELF_PLATFORM (elf_aux_platform)
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#define SET_PERSONALITY(ex) do { } while (0)
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extern unsigned long vsyscall_ehdr;
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extern unsigned long vsyscall_end;
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extern unsigned long __kernel_vsyscall;
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#define VSYSCALL_BASE vsyscall_ehdr
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#define VSYSCALL_END vsyscall_end
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/*
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* This is the range that is readable by user mode, and things
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* acting like user mode such as get_user_pages.
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*/
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#define FIXADDR_USER_START VSYSCALL_BASE
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#define FIXADDR_USER_END VSYSCALL_END
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/*
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* Architecture-neutral AT_ values in 0-17, leave some room
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* for more of them, start the x86-specific ones at 32.
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*/
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#define AT_SYSINFO 32
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#define AT_SYSINFO_EHDR 33
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#define ARCH_DLINFO \
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do { \
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if ( vsyscall_ehdr ) { \
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NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall); \
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NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr); \
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} \
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} while (0)
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/*
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* These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
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* extra segments containing the vsyscall DSO contents. Dumping its
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* contents makes post-mortem fully interpretable later without matching up
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* the same kernel and hardware config to see what PC values meant.
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* Dumping its extra ELF program headers includes all the other information
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* a debugger needs to easily find how the vsyscall DSO was being used.
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*/
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#define ELF_CORE_EXTRA_PHDRS \
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(vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0 )
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#define ELF_CORE_WRITE_EXTRA_PHDRS \
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if ( vsyscall_ehdr ) { \
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const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \
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const struct elf_phdr *const phdrp = \
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(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \
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int i; \
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Elf32_Off ofs = 0; \
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for (i = 0; i < ehdrp->e_phnum; ++i) { \
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struct elf_phdr phdr = phdrp[i]; \
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if (phdr.p_type == PT_LOAD) { \
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ofs = phdr.p_offset = offset; \
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offset += phdr.p_filesz; \
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} \
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else \
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phdr.p_offset += ofs; \
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phdr.p_paddr = 0; /* match other core phdrs */ \
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DUMP_WRITE(&phdr, sizeof(phdr)); \
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} \
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}
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#define ELF_CORE_WRITE_EXTRA_DATA \
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if ( vsyscall_ehdr ) { \
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const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \
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const struct elf_phdr *const phdrp = \
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(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \
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int i; \
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for (i = 0; i < ehdrp->e_phnum; ++i) { \
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if (phdrp[i].p_type == PT_LOAD) \
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DUMP_WRITE((void *) phdrp[i].p_vaddr, \
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phdrp[i].p_filesz); \
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} \
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}
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#endif
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