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2439a791 TG |
1 | #ifndef _ASM_X86_ELF_H |
2 | #define _ASM_X86_ELF_H | |
3 | ||
4 | /* | |
5 | * ELF register definitions.. | |
6 | */ | |
7 | ||
8 | #include <asm/ptrace.h> | |
9 | #include <asm/user.h> | |
10 | #include <asm/auxvec.h> | |
11 | ||
12 | typedef unsigned long elf_greg_t; | |
13 | ||
14 | #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) | |
15 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; | |
16 | ||
17 | typedef struct user_i387_struct elf_fpregset_t; | |
18 | ||
19 | #ifdef __i386__ | |
20 | ||
21 | typedef struct user_fxsr_struct elf_fpxregset_t; | |
22 | ||
23 | #define R_386_NONE 0 | |
24 | #define R_386_32 1 | |
25 | #define R_386_PC32 2 | |
26 | #define R_386_GOT32 3 | |
27 | #define R_386_PLT32 4 | |
28 | #define R_386_COPY 5 | |
29 | #define R_386_GLOB_DAT 6 | |
30 | #define R_386_JMP_SLOT 7 | |
31 | #define R_386_RELATIVE 8 | |
32 | #define R_386_GOTOFF 9 | |
33 | #define R_386_GOTPC 10 | |
34 | #define R_386_NUM 11 | |
35 | ||
36 | /* | |
37 | * These are used to set parameters in the core dumps. | |
38 | */ | |
39 | #define ELF_CLASS ELFCLASS32 | |
40 | #define ELF_DATA ELFDATA2LSB | |
41 | #define ELF_ARCH EM_386 | |
42 | ||
96a388de | 43 | #else |
2439a791 TG |
44 | |
45 | /* x86-64 relocation types */ | |
46 | #define R_X86_64_NONE 0 /* No reloc */ | |
47 | #define R_X86_64_64 1 /* Direct 64 bit */ | |
48 | #define R_X86_64_PC32 2 /* PC relative 32 bit signed */ | |
49 | #define R_X86_64_GOT32 3 /* 32 bit GOT entry */ | |
50 | #define R_X86_64_PLT32 4 /* 32 bit PLT address */ | |
51 | #define R_X86_64_COPY 5 /* Copy symbol at runtime */ | |
52 | #define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ | |
53 | #define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ | |
54 | #define R_X86_64_RELATIVE 8 /* Adjust by program base */ | |
55 | #define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative | |
56 | offset to GOT */ | |
57 | #define R_X86_64_32 10 /* Direct 32 bit zero extended */ | |
58 | #define R_X86_64_32S 11 /* Direct 32 bit sign extended */ | |
59 | #define R_X86_64_16 12 /* Direct 16 bit zero extended */ | |
60 | #define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */ | |
61 | #define R_X86_64_8 14 /* Direct 8 bit sign extended */ | |
62 | #define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */ | |
63 | ||
64 | #define R_X86_64_NUM 16 | |
65 | ||
66 | /* | |
67 | * These are used to set parameters in the core dumps. | |
68 | */ | |
69 | #define ELF_CLASS ELFCLASS64 | |
70 | #define ELF_DATA ELFDATA2LSB | |
71 | #define ELF_ARCH EM_X86_64 | |
72 | ||
73 | #endif | |
74 | ||
75 | #ifdef __KERNEL__ | |
76 | ||
af65d648 RM |
77 | /* |
78 | * This is used to ensure we don't load something for the wrong architecture. | |
79 | */ | |
80 | #define elf_check_arch_ia32(x) \ | |
81 | (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) | |
82 | ||
2439a791 TG |
83 | #ifdef CONFIG_X86_32 |
84 | #include <asm/processor.h> | |
85 | #include <asm/system.h> /* for savesegment */ | |
86 | #include <asm/desc.h> | |
6c3652ef | 87 | #include <asm/vdso.h> |
2439a791 | 88 | |
af65d648 | 89 | #define elf_check_arch(x) elf_check_arch_ia32(x) |
2439a791 TG |
90 | |
91 | /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx | |
92 | contains a pointer to a function which might be registered using `atexit'. | |
93 | This provides a mean for the dynamic linker to call DT_FINI functions for | |
94 | shared libraries that have been loaded before the code runs. | |
95 | ||
96 | A value of 0 tells we have no such handler. | |
97 | ||
98 | We might as well make sure everything else is cleared too (except for %esp), | |
99 | just to make things more deterministic. | |
100 | */ | |
101 | #define ELF_PLAT_INIT(_r, load_addr) do { \ | |
65ea5b03 PA |
102 | _r->bx = 0; _r->cx = 0; _r->dx = 0; \ |
103 | _r->si = 0; _r->di = 0; _r->bp = 0; \ | |
104 | _r->ax = 0; \ | |
2439a791 TG |
105 | } while (0) |
106 | ||
2439a791 TG |
107 | #define ELF_PLATFORM (utsname()->machine) |
108 | #define set_personality_64bit() do { } while (0) | |
109 | extern unsigned int vdso_enabled; | |
110 | ||
111 | #else /* CONFIG_X86_32 */ | |
112 | ||
113 | #include <asm/processor.h> | |
114 | ||
115 | /* | |
116 | * This is used to ensure we don't load something for the wrong architecture. | |
117 | */ | |
118 | #define elf_check_arch(x) \ | |
119 | ((x)->e_machine == EM_X86_64) | |
120 | ||
121 | #define ELF_PLAT_INIT(_r, load_addr) do { \ | |
122 | struct task_struct *cur = current; \ | |
65ea5b03 PA |
123 | (_r)->bx = 0; (_r)->cx = 0; (_r)->dx = 0; \ |
124 | (_r)->si = 0; (_r)->di = 0; (_r)->bp = 0; \ | |
125 | (_r)->ax = 0; \ | |
2439a791 TG |
126 | (_r)->r8 = 0; \ |
127 | (_r)->r9 = 0; \ | |
128 | (_r)->r10 = 0; \ | |
129 | (_r)->r11 = 0; \ | |
130 | (_r)->r12 = 0; \ | |
131 | (_r)->r13 = 0; \ | |
132 | (_r)->r14 = 0; \ | |
133 | (_r)->r15 = 0; \ | |
134 | cur->thread.fs = 0; cur->thread.gs = 0; \ | |
135 | cur->thread.fsindex = 0; cur->thread.gsindex = 0; \ | |
136 | cur->thread.ds = 0; cur->thread.es = 0; \ | |
137 | clear_thread_flag(TIF_IA32); \ | |
138 | } while (0) | |
139 | ||
2439a791 TG |
140 | /* I'm not sure if we can use '-' here */ |
141 | #define ELF_PLATFORM ("x86_64") | |
142 | extern void set_personality_64bit(void); | |
143 | extern int vdso_enabled; | |
144 | ||
145 | #endif /* !CONFIG_X86_32 */ | |
146 | ||
975511be | 147 | #define CORE_DUMP_USE_REGSET |
2439a791 TG |
148 | #define USE_ELF_CORE_DUMP |
149 | #define ELF_EXEC_PAGESIZE 4096 | |
150 | ||
151 | /* This is the location that an ET_DYN program is loaded if exec'ed. Typical | |
152 | use of this is to invoke "./ld.so someprog" to test out a new version of | |
153 | the loader. We need to make sure that it is out of the way of the program | |
154 | that it will "exec", and that there is sufficient room for the brk. */ | |
155 | ||
156 | #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) | |
157 | ||
158 | /* This yields a mask that user programs can use to figure out what | |
159 | instruction set this CPU supports. This could be done in user space, | |
160 | but it's not easy, and we've already done it here. */ | |
161 | ||
162 | #define ELF_HWCAP (boot_cpu_data.x86_capability[0]) | |
163 | ||
164 | /* This yields a string that ld.so will use to load implementation | |
165 | specific libraries for optimization. This is more specific in | |
166 | intent than poking at uname or /proc/cpuinfo. | |
167 | ||
168 | For the moment, we have only optimizations for the Intel generations, | |
169 | but that could change... */ | |
170 | ||
171 | #define SET_PERSONALITY(ex, ibcs2) set_personality_64bit() | |
172 | ||
173 | /* | |
174 | * An executable for which elf_read_implies_exec() returns TRUE will | |
175 | * have the READ_IMPLIES_EXEC personality flag set automatically. | |
176 | */ | |
177 | #define elf_read_implies_exec(ex, executable_stack) \ | |
178 | (executable_stack != EXSTACK_DISABLE_X) | |
179 | ||
180 | struct task_struct; | |
181 | ||
2439a791 | 182 | #ifdef CONFIG_X86_32 |
2439a791 TG |
183 | |
184 | #define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO)) | |
2439a791 TG |
185 | |
186 | /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ | |
187 | ||
188 | #define ARCH_DLINFO \ | |
189 | do if (vdso_enabled) { \ | |
190 | NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ | |
191 | NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \ | |
192 | } while (0) | |
193 | ||
194 | #else /* CONFIG_X86_32 */ | |
195 | ||
af65d648 RM |
196 | #define VDSO_HIGH_BASE 0xffffe000U /* CONFIG_COMPAT_VDSO address */ |
197 | ||
2439a791 TG |
198 | /* 1GB for 64bit, 8MB for 32bit */ |
199 | #define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff) | |
200 | ||
201 | #define ARCH_DLINFO \ | |
202 | do if (vdso_enabled) { \ | |
203 | NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\ | |
204 | } while (0) | |
205 | ||
206 | #endif /* !CONFIG_X86_32 */ | |
207 | ||
af65d648 RM |
208 | #define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) |
209 | ||
210 | #define VDSO_ENTRY \ | |
211 | ((unsigned long) VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) | |
212 | ||
2439a791 TG |
213 | struct linux_binprm; |
214 | ||
215 | #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 | |
216 | extern int arch_setup_additional_pages(struct linux_binprm *bprm, | |
217 | int executable_stack); | |
218 | ||
c1d171a0 JK |
219 | extern unsigned long arch_randomize_brk(struct mm_struct *mm); |
220 | #define arch_randomize_brk arch_randomize_brk | |
221 | ||
2439a791 TG |
222 | #endif /* __KERNEL__ */ |
223 | ||
96a388de | 224 | #endif |