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 #include <asm/processor.h>
79 #include <asm/system.h> /* for savesegment */
84 * This is used to ensure we don't load something for the wrong architecture.
86 #define elf_check_arch(x) \
87 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
89 /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
90 contains a pointer to a function which might be registered using `atexit'.
91 This provides a mean for the dynamic linker to call DT_FINI functions for
92 shared libraries that have been loaded before the code runs.
94 A value of 0 tells we have no such handler.
96 We might as well make sure everything else is cleared too (except for %esp),
97 just to make things more deterministic.
99 #define ELF_PLAT_INIT(_r, load_addr) do { \
100 _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \
101 _r->esi = 0; _r->edi = 0; _r->ebp = 0; \
105 /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
106 now struct_user_regs, they are different) */
108 #define ELF_CORE_COPY_REGS(pr_reg, regs) \
109 pr_reg[0] = regs->ebx; \
110 pr_reg[1] = regs->ecx; \
111 pr_reg[2] = regs->edx; \
112 pr_reg[3] = regs->esi; \
113 pr_reg[4] = regs->edi; \
114 pr_reg[5] = regs->ebp; \
115 pr_reg[6] = regs->eax; \
116 pr_reg[7] = regs->xds & 0xffff; \
117 pr_reg[8] = regs->xes & 0xffff; \
118 pr_reg[9] = regs->xfs & 0xffff; \
119 savesegment(gs,pr_reg[10]); \
120 pr_reg[11] = regs->orig_eax; \
121 pr_reg[12] = regs->eip; \
122 pr_reg[13] = regs->xcs & 0xffff; \
123 pr_reg[14] = regs->eflags; \
124 pr_reg[15] = regs->esp; \
125 pr_reg[16] = regs->xss & 0xffff;
127 #define ELF_PLATFORM (utsname()->machine)
128 #define set_personality_64bit() do { } while (0)
129 extern unsigned int vdso_enabled;
131 #else /* CONFIG_X86_32 */
133 #include <asm/processor.h>
136 * This is used to ensure we don't load something for the wrong architecture.
138 #define elf_check_arch(x) \
139 ((x)->e_machine == EM_X86_64)
141 #define ELF_PLAT_INIT(_r, load_addr) do { \
142 struct task_struct *cur = current; \
143 (_r)->rbx = 0; (_r)->rcx = 0; (_r)->rdx = 0; \
144 (_r)->rsi = 0; (_r)->rdi = 0; (_r)->rbp = 0; \
154 cur->thread.fs = 0; cur->thread.gs = 0; \
155 cur->thread.fsindex = 0; cur->thread.gsindex = 0; \
156 cur->thread.ds = 0; cur->thread.es = 0; \
157 clear_thread_flag(TIF_IA32); \
160 /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
161 now struct_user_regs, they are different). Assumes current is the process
164 #define ELF_CORE_COPY_REGS(pr_reg, regs) do { \
166 (pr_reg)[0] = (regs)->r15; \
167 (pr_reg)[1] = (regs)->r14; \
168 (pr_reg)[2] = (regs)->r13; \
169 (pr_reg)[3] = (regs)->r12; \
170 (pr_reg)[4] = (regs)->rbp; \
171 (pr_reg)[5] = (regs)->rbx; \
172 (pr_reg)[6] = (regs)->r11; \
173 (pr_reg)[7] = (regs)->r10; \
174 (pr_reg)[8] = (regs)->r9; \
175 (pr_reg)[9] = (regs)->r8; \
176 (pr_reg)[10] = (regs)->rax; \
177 (pr_reg)[11] = (regs)->rcx; \
178 (pr_reg)[12] = (regs)->rdx; \
179 (pr_reg)[13] = (regs)->rsi; \
180 (pr_reg)[14] = (regs)->rdi; \
181 (pr_reg)[15] = (regs)->orig_rax; \
182 (pr_reg)[16] = (regs)->rip; \
183 (pr_reg)[17] = (regs)->cs; \
184 (pr_reg)[18] = (regs)->eflags; \
185 (pr_reg)[19] = (regs)->rsp; \
186 (pr_reg)[20] = (regs)->ss; \
187 (pr_reg)[21] = current->thread.fs; \
188 (pr_reg)[22] = current->thread.gs; \
189 asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
190 asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
191 asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
192 asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \
195 /* I'm not sure if we can use '-' here */
196 #define ELF_PLATFORM ("x86_64")
197 extern void set_personality_64bit(void);
198 extern int vdso_enabled;
200 #endif /* !CONFIG_X86_32 */
202 #define USE_ELF_CORE_DUMP
203 #define ELF_EXEC_PAGESIZE 4096
205 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
206 use of this is to invoke "./ld.so someprog" to test out a new version of
207 the loader. We need to make sure that it is out of the way of the program
208 that it will "exec", and that there is sufficient room for the brk. */
210 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
212 /* This yields a mask that user programs can use to figure out what
213 instruction set this CPU supports. This could be done in user space,
214 but it's not easy, and we've already done it here. */
216 #define ELF_HWCAP (boot_cpu_data.x86_capability[0])
218 /* This yields a string that ld.so will use to load implementation
219 specific libraries for optimization. This is more specific in
220 intent than poking at uname or /proc/cpuinfo.
222 For the moment, we have only optimizations for the Intel generations,
223 but that could change... */
225 #define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
228 * An executable for which elf_read_implies_exec() returns TRUE will
229 * have the READ_IMPLIES_EXEC personality flag set automatically.
231 #define elf_read_implies_exec(ex, executable_stack) \
232 (executable_stack != EXSTACK_DISABLE_X)
236 extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
237 extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
239 #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
240 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
243 extern int dump_task_extended_fpu (struct task_struct *,
244 struct user_fxsr_struct *);
245 #define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) \
246 dump_task_extended_fpu(tsk, elf_xfpregs)
247 #define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
249 #define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
250 #define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
253 ((unsigned long) VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
255 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
257 #define ARCH_DLINFO \
258 do if (vdso_enabled) { \
259 NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
260 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
263 #else /* CONFIG_X86_32 */
265 /* 1GB for 64bit, 8MB for 32bit */
266 #define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
268 #define ARCH_DLINFO \
269 do if (vdso_enabled) { \
270 NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\
273 #endif /* !CONFIG_X86_32 */
277 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
278 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
279 int executable_stack);
281 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
282 #define arch_randomize_brk arch_randomize_brk
284 #endif /* __KERNEL__ */