diff options
Diffstat (limited to 'include/asm-um/elf.h')
| -rw-r--r-- | include/asm-um/elf.h | 174 |
1 files changed, 153 insertions, 21 deletions
diff --git a/include/asm-um/elf.h b/include/asm-um/elf.h index d41112bfb29..ebf7c63886e 100644 --- a/include/asm-um/elf.h +++ b/include/asm-um/elf.h @@ -1,25 +1,11 @@ -#ifndef __UM_ELF_H -#define __UM_ELF_H +/* + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ +#ifndef __UM_ELF_I386_H +#define __UM_ELF_I386_H -#include "linux/config.h" -#include "asm/archparam.h" - -extern long elf_aux_hwcap; -#define ELF_HWCAP (elf_aux_hwcap) - -#define SET_PERSONALITY(ex, ibcs2) do ; while(0) - -#define ELF_EXEC_PAGESIZE 4096 - -#define elf_check_arch(x) (1) - -#ifdef CONFIG_64BIT -#define ELF_CLASS ELFCLASS64 -#else -#define ELF_CLASS ELFCLASS32 -#endif - -#define USE_ELF_CORE_DUMP +#include "user.h" #if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT) @@ -61,4 +47,150 @@ extern long elf_aux_hwcap; #endif +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 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 + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ |