Commit | Line | Data |
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dbc35cc7 | 1 | /* |
009ec2a9 | 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
dbc35cc7 BS |
3 | * Licensed under the GPL |
4 | */ | |
5 | #ifndef __UM_ELF_I386_H | |
6 | #define __UM_ELF_I386_H | |
7 | ||
8192ab42 | 8 | #include <asm/user.h> |
058ac308 | 9 | #include "skas.h" |
dbc35cc7 BS |
10 | |
11 | #define R_386_NONE 0 | |
12 | #define R_386_32 1 | |
13 | #define R_386_PC32 2 | |
14 | #define R_386_GOT32 3 | |
15 | #define R_386_PLT32 4 | |
16 | #define R_386_COPY 5 | |
17 | #define R_386_GLOB_DAT 6 | |
18 | #define R_386_JMP_SLOT 7 | |
19 | #define R_386_RELATIVE 8 | |
20 | #define R_386_GOTOFF 9 | |
21 | #define R_386_GOTPC 10 | |
22 | #define R_386_NUM 11 | |
23 | ||
24 | typedef unsigned long elf_greg_t; | |
25 | ||
26 | #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) | |
27 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; | |
28 | ||
29 | typedef struct user_i387_struct elf_fpregset_t; | |
30 | ||
31 | /* | |
32 | * This is used to ensure we don't load something for the wrong architecture. | |
33 | */ | |
34 | #define elf_check_arch(x) \ | |
35 | (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) | |
36 | ||
37 | #define ELF_CLASS ELFCLASS32 | |
38 | #define ELF_DATA ELFDATA2LSB | |
39 | #define ELF_ARCH EM_386 | |
40 | ||
41 | #define ELF_PLAT_INIT(regs, load_addr) do { \ | |
42 | PT_REGS_EBX(regs) = 0; \ | |
43 | PT_REGS_ECX(regs) = 0; \ | |
44 | PT_REGS_EDX(regs) = 0; \ | |
45 | PT_REGS_ESI(regs) = 0; \ | |
46 | PT_REGS_EDI(regs) = 0; \ | |
47 | PT_REGS_EBP(regs) = 0; \ | |
48 | PT_REGS_EAX(regs) = 0; \ | |
009ec2a9 | 49 | } while (0) |
dbc35cc7 BS |
50 | |
51 | #define USE_ELF_CORE_DUMP | |
52 | #define ELF_EXEC_PAGESIZE 4096 | |
53 | ||
54 | #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) | |
55 | ||
56 | /* Shamelessly stolen from include/asm-i386/elf.h */ | |
57 | ||
58 | #define ELF_CORE_COPY_REGS(pr_reg, regs) do { \ | |
59 | pr_reg[0] = PT_REGS_EBX(regs); \ | |
60 | pr_reg[1] = PT_REGS_ECX(regs); \ | |
61 | pr_reg[2] = PT_REGS_EDX(regs); \ | |
62 | pr_reg[3] = PT_REGS_ESI(regs); \ | |
63 | pr_reg[4] = PT_REGS_EDI(regs); \ | |
64 | pr_reg[5] = PT_REGS_EBP(regs); \ | |
65 | pr_reg[6] = PT_REGS_EAX(regs); \ | |
66 | pr_reg[7] = PT_REGS_DS(regs); \ | |
67 | pr_reg[8] = PT_REGS_ES(regs); \ | |
68 | /* fake once used fs and gs selectors? */ \ | |
69 | pr_reg[9] = PT_REGS_DS(regs); \ | |
70 | pr_reg[10] = PT_REGS_DS(regs); \ | |
71 | pr_reg[11] = PT_REGS_SYSCALL_NR(regs); \ | |
72 | pr_reg[12] = PT_REGS_IP(regs); \ | |
73 | pr_reg[13] = PT_REGS_CS(regs); \ | |
74 | pr_reg[14] = PT_REGS_EFLAGS(regs); \ | |
75 | pr_reg[15] = PT_REGS_SP(regs); \ | |
76 | pr_reg[16] = PT_REGS_SS(regs); \ | |
009ec2a9 | 77 | } while (0); |
dbc35cc7 | 78 | |
8192ab42 | 79 | extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu); |
058ac308 JD |
80 | |
81 | #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu) | |
82 | ||
dbc35cc7 BS |
83 | extern long elf_aux_hwcap; |
84 | #define ELF_HWCAP (elf_aux_hwcap) | |
85 | ||
86 | extern char * elf_aux_platform; | |
87 | #define ELF_PLATFORM (elf_aux_platform) | |
88 | ||
009ec2a9 | 89 | #define SET_PERSONALITY(ex, ibcs2) do { } while (0) |
dbc35cc7 BS |
90 | |
91 | extern unsigned long vsyscall_ehdr; | |
92 | extern unsigned long vsyscall_end; | |
93 | extern unsigned long __kernel_vsyscall; | |
94 | ||
95 | #define VSYSCALL_BASE vsyscall_ehdr | |
96 | #define VSYSCALL_END vsyscall_end | |
97 | ||
98 | /* | |
99 | * This is the range that is readable by user mode, and things | |
100 | * acting like user mode such as get_user_pages. | |
101 | */ | |
102 | #define FIXADDR_USER_START VSYSCALL_BASE | |
103 | #define FIXADDR_USER_END VSYSCALL_END | |
104 | ||
105 | /* | |
106 | * Architecture-neutral AT_ values in 0-17, leave some room | |
107 | * for more of them, start the x86-specific ones at 32. | |
108 | */ | |
109 | #define AT_SYSINFO 32 | |
110 | #define AT_SYSINFO_EHDR 33 | |
111 | ||
112 | #define ARCH_DLINFO \ | |
113 | do { \ | |
114 | if ( vsyscall_ehdr ) { \ | |
115 | NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall); \ | |
116 | NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr); \ | |
117 | } \ | |
118 | } while (0) | |
119 | ||
120 | /* | |
121 | * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out | |
122 | * extra segments containing the vsyscall DSO contents. Dumping its | |
123 | * contents makes post-mortem fully interpretable later without matching up | |
124 | * the same kernel and hardware config to see what PC values meant. | |
125 | * Dumping its extra ELF program headers includes all the other information | |
126 | * a debugger needs to easily find how the vsyscall DSO was being used. | |
127 | */ | |
128 | #define ELF_CORE_EXTRA_PHDRS \ | |
129 | (vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0 ) | |
130 | ||
131 | #define ELF_CORE_WRITE_EXTRA_PHDRS \ | |
132 | if ( vsyscall_ehdr ) { \ | |
133 | const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \ | |
134 | const struct elf_phdr *const phdrp = \ | |
135 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \ | |
136 | int i; \ | |
137 | Elf32_Off ofs = 0; \ | |
138 | for (i = 0; i < ehdrp->e_phnum; ++i) { \ | |
139 | struct elf_phdr phdr = phdrp[i]; \ | |
140 | if (phdr.p_type == PT_LOAD) { \ | |
141 | ofs = phdr.p_offset = offset; \ | |
142 | offset += phdr.p_filesz; \ | |
143 | } \ | |
144 | else \ | |
145 | phdr.p_offset += ofs; \ | |
146 | phdr.p_paddr = 0; /* match other core phdrs */ \ | |
147 | DUMP_WRITE(&phdr, sizeof(phdr)); \ | |
148 | } \ | |
149 | } | |
150 | #define ELF_CORE_WRITE_EXTRA_DATA \ | |
151 | if ( vsyscall_ehdr ) { \ | |
152 | const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \ | |
153 | const struct elf_phdr *const phdrp = \ | |
154 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \ | |
155 | int i; \ | |
156 | for (i = 0; i < ehdrp->e_phnum; ++i) { \ | |
157 | if (phdrp[i].p_type == PT_LOAD) \ | |
158 | DUMP_WRITE((void *) phdrp[i].p_vaddr, \ | |
159 | phdrp[i].p_filesz); \ | |
160 | } \ | |
161 | } | |
162 | ||
163 | #endif |