elf.h

  1/*
  2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  3 * Licensed under the GPL
  4 */
  5#ifndef __UM_ELF_X86_H
  6#define __UM_ELF_X86_H
  7
  8#include <asm/user.h>
  9#include <skas.h>
 10
 11#define CORE_DUMP_USE_REGSET
 12
 13#ifdef CONFIG_X86_32
 14
 15#define R_386_NONE	0
 16#define R_386_32	1
 17#define R_386_PC32	2
 18#define R_386_GOT32	3
 19#define R_386_PLT32	4
 20#define R_386_COPY	5
 21#define R_386_GLOB_DAT	6
 22#define R_386_JMP_SLOT	7
 23#define R_386_RELATIVE	8
 24#define R_386_GOTOFF	9
 25#define R_386_GOTPC	10
 26#define R_386_NUM	11
 27
 28/*
 29 * This is used to ensure we don't load something for the wrong architecture.
 30 */
 31#define elf_check_arch(x) \
 32	(((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
 33
 34#define ELF_CLASS	ELFCLASS32
 35#define ELF_DATA        ELFDATA2LSB
 36#define ELF_ARCH        EM_386
 37
 38#define ELF_PLAT_INIT(regs, load_addr) do { \
 39	PT_REGS_BX(regs) = 0; \
 40	PT_REGS_CX(regs) = 0; \
 41	PT_REGS_DX(regs) = 0; \
 42	PT_REGS_SI(regs) = 0; \
 43	PT_REGS_DI(regs) = 0; \
 44	PT_REGS_BP(regs) = 0; \
 45	PT_REGS_AX(regs) = 0; \
 46} while (0)
 47
 48/* Shamelessly stolen from include/asm-i386/elf.h */
 49
 50#define ELF_CORE_COPY_REGS(pr_reg, regs) do {	\
 51	pr_reg[0] = PT_REGS_BX(regs);		\
 52	pr_reg[1] = PT_REGS_CX(regs);		\
 53	pr_reg[2] = PT_REGS_DX(regs);		\
 54	pr_reg[3] = PT_REGS_SI(regs);		\
 55	pr_reg[4] = PT_REGS_DI(regs);		\
 56	pr_reg[5] = PT_REGS_BP(regs);		\
 57	pr_reg[6] = PT_REGS_AX(regs);		\
 58	pr_reg[7] = PT_REGS_DS(regs);		\
 59	pr_reg[8] = PT_REGS_ES(regs);		\
 60	/* fake once used fs and gs selectors? */	\
 61	pr_reg[9] = PT_REGS_DS(regs);		\
 62	pr_reg[10] = PT_REGS_DS(regs);		\
 63	pr_reg[11] = PT_REGS_SYSCALL_NR(regs);	\
 64	pr_reg[12] = PT_REGS_IP(regs);		\
 65	pr_reg[13] = PT_REGS_CS(regs);		\
 66	pr_reg[14] = PT_REGS_EFLAGS(regs);	\
 67	pr_reg[15] = PT_REGS_SP(regs);		\
 68	pr_reg[16] = PT_REGS_SS(regs);		\
 69} while (0);
 70
 71#define ELF_PLATFORM_FALLBACK "i586"
 72
 73#else
 74
 75/* x86-64 relocation types, taken from asm-x86_64/elf.h */
 76#define R_X86_64_NONE		0	/* No reloc */
 77#define R_X86_64_64		1	/* Direct 64 bit  */
 78#define R_X86_64_PC32		2	/* PC relative 32 bit signed */
 79#define R_X86_64_GOT32		3	/* 32 bit GOT entry */
 80#define R_X86_64_PLT32		4	/* 32 bit PLT address */
 81#define R_X86_64_COPY		5	/* Copy symbol at runtime */
 82#define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
 83#define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
 84#define R_X86_64_RELATIVE	8	/* Adjust by program base */
 85#define R_X86_64_GOTPCREL	9	/* 32 bit signed pc relative
 86					   offset to GOT */
 87#define R_X86_64_32		10	/* Direct 32 bit zero extended */
 88#define R_X86_64_32S		11	/* Direct 32 bit sign extended */
 89#define R_X86_64_16		12	/* Direct 16 bit zero extended */
 90#define R_X86_64_PC16		13	/* 16 bit sign extended pc relative */
 91#define R_X86_64_8		14	/* Direct 8 bit sign extended  */
 92#define R_X86_64_PC8		15	/* 8 bit sign extended pc relative */
 93#define R_X86_64_PC64		24	/* Place relative 64-bit signed */
 94
 95/*
 96 * This is used to ensure we don't load something for the wrong architecture.
 97 */
 98#define elf_check_arch(x) \
 99	((x)->e_machine == EM_X86_64)
100
101#define ELF_CLASS	ELFCLASS64
102#define ELF_DATA        ELFDATA2LSB
103#define ELF_ARCH        EM_X86_64
104
105#define ELF_PLAT_INIT(regs, load_addr)    do { \
106	PT_REGS_BX(regs) = 0; \
107	PT_REGS_CX(regs) = 0; \
108	PT_REGS_DX(regs) = 0; \
109	PT_REGS_SI(regs) = 0; \
110	PT_REGS_DI(regs) = 0; \
111	PT_REGS_BP(regs) = 0; \
112	PT_REGS_AX(regs) = 0; \
113	PT_REGS_R8(regs) = 0; \
114	PT_REGS_R9(regs) = 0; \
115	PT_REGS_R10(regs) = 0; \
116	PT_REGS_R11(regs) = 0; \
117	PT_REGS_R12(regs) = 0; \
118	PT_REGS_R13(regs) = 0; \
119	PT_REGS_R14(regs) = 0; \
120	PT_REGS_R15(regs) = 0; \
121} while (0)
122
123#define ELF_CORE_COPY_REGS(pr_reg, _regs)		\
124	(pr_reg)[0] = (_regs)->regs.gp[0];			\
125	(pr_reg)[1] = (_regs)->regs.gp[1];			\
126	(pr_reg)[2] = (_regs)->regs.gp[2];			\
127	(pr_reg)[3] = (_regs)->regs.gp[3];			\
128	(pr_reg)[4] = (_regs)->regs.gp[4];			\
129	(pr_reg)[5] = (_regs)->regs.gp[5];			\
130	(pr_reg)[6] = (_regs)->regs.gp[6];			\
131	(pr_reg)[7] = (_regs)->regs.gp[7];			\
132	(pr_reg)[8] = (_regs)->regs.gp[8];			\
133	(pr_reg)[9] = (_regs)->regs.gp[9];			\
134	(pr_reg)[10] = (_regs)->regs.gp[10];			\
135	(pr_reg)[11] = (_regs)->regs.gp[11];			\
136	(pr_reg)[12] = (_regs)->regs.gp[12];			\
137	(pr_reg)[13] = (_regs)->regs.gp[13];			\
138	(pr_reg)[14] = (_regs)->regs.gp[14];			\
139	(pr_reg)[15] = (_regs)->regs.gp[15];			\
140	(pr_reg)[16] = (_regs)->regs.gp[16];			\
141	(pr_reg)[17] = (_regs)->regs.gp[17];			\
142	(pr_reg)[18] = (_regs)->regs.gp[18];			\
143	(pr_reg)[19] = (_regs)->regs.gp[19];			\
144	(pr_reg)[20] = (_regs)->regs.gp[20];			\
145	(pr_reg)[21] = (_regs)->regs.gp[21];			\
146	(pr_reg)[22] = (_regs)->regs.gp[22];			\
147	(pr_reg)[23] = 0;					\
148	(pr_reg)[24] = 0;					\
149	(pr_reg)[25] = 0;					\
150	(pr_reg)[26] = 0;
151
152#define ELF_PLATFORM_FALLBACK "x86_64"
153
154#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
155struct linux_binprm;
156extern int arch_setup_additional_pages(struct linux_binprm *bprm,
157	int uses_interp);
158
159extern unsigned long um_vdso_addr;
160#define AT_SYSINFO_EHDR 33
161#define ARCH_DLINFO	NEW_AUX_ENT(AT_SYSINFO_EHDR, um_vdso_addr)
162
163#endif
164
165typedef unsigned long elf_greg_t;
166
167#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
168typedef elf_greg_t elf_gregset_t[ELF_NGREG];
169
170typedef struct user_i387_struct elf_fpregset_t;
171
172struct task_struct;
173
174#define ELF_EXEC_PAGESIZE 4096
175
176#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
177
178extern long elf_aux_hwcap;
179#define ELF_HWCAP (elf_aux_hwcap)
180
181extern char *elf_aux_platform;
182#define ELF_PLATFORM (elf_aux_platform ?: ELF_PLATFORM_FALLBACK)
183
184#define SET_PERSONALITY(ex) do {} while(0)
185
186#endif