/* * 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 USE_ELF_CORE_DUMP #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, ibcs2) 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