5 * ELF register definitions..
8 #include <asm/ptrace.h>
10 #include <asm/auxvec.h>
12 typedef unsigned long elf_greg_t;
14 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
15 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
17 typedef struct user_i387_struct elf_fpregset_t;
21 typedef struct user_fxsr_struct elf_fpxregset_t;
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
37 * These are used to set parameters in the core dumps.
39 #define ELF_CLASS ELFCLASS32
40 #define ELF_DATA ELFDATA2LSB
41 #define ELF_ARCH EM_386
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
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 */
64 #define R_X86_64_NUM 16
67 * These are used to set parameters in the core dumps.
69 #define ELF_CLASS ELFCLASS64
70 #define ELF_DATA ELFDATA2LSB
71 #define ELF_ARCH EM_X86_64
78 * This is used to ensure we don't load something for the wrong architecture.
80 #define elf_check_arch_ia32(x) \
81 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
84 #include <asm/processor.h>
85 #include <asm/system.h> /* for savesegment */
89 #define elf_check_arch(x) elf_check_arch_ia32(x)
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.
96 A value of 0 tells we have no such handler.
98 We might as well make sure everything else is cleared too (except for %esp),
99 just to make things more deterministic.
101 #define ELF_PLAT_INIT(_r, load_addr) do { \
102 _r->bx = 0; _r->cx = 0; _r->dx = 0; \
103 _r->si = 0; _r->di = 0; _r->bp = 0; \
107 #define ELF_PLATFORM (utsname()->machine)
108 #define set_personality_64bit() do { } while (0)
109 extern unsigned int vdso_enabled;
111 #else /* CONFIG_X86_32 */
113 #include <asm/processor.h>
116 * This is used to ensure we don't load something for the wrong architecture.
118 #define elf_check_arch(x) \
119 ((x)->e_machine == EM_X86_64)
121 #define ELF_PLAT_INIT(_r, load_addr) do { \
122 struct task_struct *cur = current; \
123 (_r)->bx = 0; (_r)->cx = 0; (_r)->dx = 0; \
124 (_r)->si = 0; (_r)->di = 0; (_r)->bp = 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); \
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;
145 #endif /* !CONFIG_X86_32 */
147 #define CORE_DUMP_USE_REGSET
148 #define USE_ELF_CORE_DUMP
149 #define ELF_EXEC_PAGESIZE 4096
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. */
156 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
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. */
162 #define ELF_HWCAP (boot_cpu_data.x86_capability[0])
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.
168 For the moment, we have only optimizations for the Intel generations,
169 but that could change... */
171 #define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
174 * An executable for which elf_read_implies_exec() returns TRUE will
175 * have the READ_IMPLIES_EXEC personality flag set automatically.
177 #define elf_read_implies_exec(ex, executable_stack) \
178 (executable_stack != EXSTACK_DISABLE_X)
184 #define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
186 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
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); \
194 #else /* CONFIG_X86_32 */
196 #define VDSO_HIGH_BASE 0xffffe000U /* CONFIG_COMPAT_VDSO address */
198 /* 1GB for 64bit, 8MB for 32bit */
199 #define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
201 #define ARCH_DLINFO \
202 do if (vdso_enabled) { \
203 NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\
206 #endif /* !CONFIG_X86_32 */
208 #define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
211 ((unsigned long) VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
215 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
216 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
217 int executable_stack);
219 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
220 #define arch_randomize_brk arch_randomize_brk
222 #endif /* __KERNEL__ */