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