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authorThomas Gleixner <tglx@linutronix.de>2007-10-23 16:37:23 -0400
committerThomas Gleixner <tglx@linutronix.de>2007-10-23 16:37:23 -0400
commit2439a791977a85bea2a11736c8c7ea2e25c49597 (patch)
tree66f08358840f219c593e12503602923f127a9ce7 /include/asm-x86
parentacbbbe9f5ab52da90a8edec02ec973e7f44dae81 (diff)
x86: merge elf_32/64.h
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86')
-rw-r--r--include/asm-x86/Kbuild2
-rw-r--r--include/asm-x86/elf.h299
-rw-r--r--include/asm-x86/elf_32.h165
-rw-r--r--include/asm-x86/elf_64.h180
4 files changed, 288 insertions, 358 deletions
diff --git a/include/asm-x86/Kbuild b/include/asm-x86/Kbuild
index 26b0dcda5ace..2beec5949399 100644
--- a/include/asm-x86/Kbuild
+++ b/include/asm-x86/Kbuild
@@ -12,8 +12,6 @@ header-y += ucontext.h
12header-y += vsyscall32.h 12header-y += vsyscall32.h
13 13
14unifdef-y += e820.h 14unifdef-y += e820.h
15unifdef-y += elf_32.h
16unifdef-y += elf_64.h
17unifdef-y += ist.h 15unifdef-y += ist.h
18unifdef-y += mce.h 16unifdef-y += mce.h
19unifdef-y += msgbuf_32.h 17unifdef-y += msgbuf_32.h
diff --git a/include/asm-x86/elf.h b/include/asm-x86/elf.h
index ed6bb6e546b9..ec42a4d2e83b 100644
--- a/include/asm-x86/elf.h
+++ b/include/asm-x86/elf.h
@@ -1,13 +1,290 @@
1#ifdef __KERNEL__ 1#ifndef _ASM_X86_ELF_H
2# ifdef CONFIG_X86_32 2#define _ASM_X86_ELF_H
3# include "elf_32.h" 3
4# else 4/*
5# include "elf_64.h" 5 * ELF register definitions..
6# endif 6 */
7
8#include <asm/ptrace.h>
9#include <asm/user.h>
10#include <asm/auxvec.h>
11
12typedef unsigned long elf_greg_t;
13
14#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
15typedef elf_greg_t elf_gregset_t[ELF_NGREG];
16
17typedef struct user_i387_struct elf_fpregset_t;
18
19#ifdef __i386__
20
21typedef 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
7#else 43#else
8# ifdef __i386__ 44
9# include "elf_32.h" 45/* x86-64 relocation types */
10# else 46#define R_X86_64_NONE 0 /* No reloc */
11# include "elf_64.h" 47#define R_X86_64_64 1 /* Direct 64 bit */
12# endif 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
77#ifdef CONFIG_X86_32
78#include <asm/processor.h>
79#include <asm/system.h> /* for savesegment */
80#include <asm/desc.h>
81
82/*
83 * This is used to ensure we don't load something for the wrong architecture.
84 */
85#define elf_check_arch(x) \
86 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
87
88/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
89 contains a pointer to a function which might be registered using `atexit'.
90 This provides a mean for the dynamic linker to call DT_FINI functions for
91 shared libraries that have been loaded before the code runs.
92
93 A value of 0 tells we have no such handler.
94
95 We might as well make sure everything else is cleared too (except for %esp),
96 just to make things more deterministic.
97 */
98#define ELF_PLAT_INIT(_r, load_addr) do { \
99 _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \
100 _r->esi = 0; _r->edi = 0; _r->ebp = 0; \
101 _r->eax = 0; \
102} while (0)
103
104/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
105 now struct_user_regs, they are different) */
106
107#define ELF_CORE_COPY_REGS(pr_reg, regs) \
108 pr_reg[0] = regs->ebx; \
109 pr_reg[1] = regs->ecx; \
110 pr_reg[2] = regs->edx; \
111 pr_reg[3] = regs->esi; \
112 pr_reg[4] = regs->edi; \
113 pr_reg[5] = regs->ebp; \
114 pr_reg[6] = regs->eax; \
115 pr_reg[7] = regs->xds & 0xffff; \
116 pr_reg[8] = regs->xes & 0xffff; \
117 pr_reg[9] = regs->xfs & 0xffff; \
118 savesegment(gs,pr_reg[10]); \
119 pr_reg[11] = regs->orig_eax; \
120 pr_reg[12] = regs->eip; \
121 pr_reg[13] = regs->xcs & 0xffff; \
122 pr_reg[14] = regs->eflags; \
123 pr_reg[15] = regs->esp; \
124 pr_reg[16] = regs->xss & 0xffff;
125
126#define ELF_PLATFORM (utsname()->machine)
127#define set_personality_64bit() do { } while (0)
128extern unsigned int vdso_enabled;
129
130#else /* CONFIG_X86_32 */
131
132#include <asm/processor.h>
133
134/*
135 * This is used to ensure we don't load something for the wrong architecture.
136 */
137#define elf_check_arch(x) \
138 ((x)->e_machine == EM_X86_64)
139
140#define ELF_PLAT_INIT(_r, load_addr) do { \
141 struct task_struct *cur = current; \
142 (_r)->rbx = 0; (_r)->rcx = 0; (_r)->rdx = 0; \
143 (_r)->rsi = 0; (_r)->rdi = 0; (_r)->rbp = 0; \
144 (_r)->rax = 0; \
145 (_r)->r8 = 0; \
146 (_r)->r9 = 0; \
147 (_r)->r10 = 0; \
148 (_r)->r11 = 0; \
149 (_r)->r12 = 0; \
150 (_r)->r13 = 0; \
151 (_r)->r14 = 0; \
152 (_r)->r15 = 0; \
153 cur->thread.fs = 0; cur->thread.gs = 0; \
154 cur->thread.fsindex = 0; cur->thread.gsindex = 0; \
155 cur->thread.ds = 0; cur->thread.es = 0; \
156 clear_thread_flag(TIF_IA32); \
157} while (0)
158
159/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
160 now struct_user_regs, they are different). Assumes current is the process
161 getting dumped. */
162
163#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \
164 unsigned v; \
165 (pr_reg)[0] = (regs)->r15; \
166 (pr_reg)[1] = (regs)->r14; \
167 (pr_reg)[2] = (regs)->r13; \
168 (pr_reg)[3] = (regs)->r12; \
169 (pr_reg)[4] = (regs)->rbp; \
170 (pr_reg)[5] = (regs)->rbx; \
171 (pr_reg)[6] = (regs)->r11; \
172 (pr_reg)[7] = (regs)->r10; \
173 (pr_reg)[8] = (regs)->r9; \
174 (pr_reg)[9] = (regs)->r8; \
175 (pr_reg)[10] = (regs)->rax; \
176 (pr_reg)[11] = (regs)->rcx; \
177 (pr_reg)[12] = (regs)->rdx; \
178 (pr_reg)[13] = (regs)->rsi; \
179 (pr_reg)[14] = (regs)->rdi; \
180 (pr_reg)[15] = (regs)->orig_rax; \
181 (pr_reg)[16] = (regs)->rip; \
182 (pr_reg)[17] = (regs)->cs; \
183 (pr_reg)[18] = (regs)->eflags; \
184 (pr_reg)[19] = (regs)->rsp; \
185 (pr_reg)[20] = (regs)->ss; \
186 (pr_reg)[21] = current->thread.fs; \
187 (pr_reg)[22] = current->thread.gs; \
188 asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
189 asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
190 asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
191 asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \
192} while(0);
193
194/* I'm not sure if we can use '-' here */
195#define ELF_PLATFORM ("x86_64")
196extern void set_personality_64bit(void);
197extern int vdso_enabled;
198
199#endif /* !CONFIG_X86_32 */
200
201#define USE_ELF_CORE_DUMP
202#define ELF_EXEC_PAGESIZE 4096
203
204/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
205 use of this is to invoke "./ld.so someprog" to test out a new version of
206 the loader. We need to make sure that it is out of the way of the program
207 that it will "exec", and that there is sufficient room for the brk. */
208
209#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
210
211/* This yields a mask that user programs can use to figure out what
212 instruction set this CPU supports. This could be done in user space,
213 but it's not easy, and we've already done it here. */
214
215#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
216
217/* This yields a string that ld.so will use to load implementation
218 specific libraries for optimization. This is more specific in
219 intent than poking at uname or /proc/cpuinfo.
220
221 For the moment, we have only optimizations for the Intel generations,
222 but that could change... */
223
224#define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
225
226/*
227 * An executable for which elf_read_implies_exec() returns TRUE will
228 * have the READ_IMPLIES_EXEC personality flag set automatically.
229 */
230#define elf_read_implies_exec(ex, executable_stack) \
231 (executable_stack != EXSTACK_DISABLE_X)
232
233struct task_struct;
234
235extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
236extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
237
238#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
239#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
240
241#ifdef CONFIG_X86_32
242extern int dump_task_extended_fpu (struct task_struct *,
243 struct user_fxsr_struct *);
244#define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) \
245 dump_task_extended_fpu(tsk, elf_xfpregs)
246#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
247
248#define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
249#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
250#define VDSO_PRELINK 0
251
252#define VDSO_SYM(x) \
253 (VDSO_CURRENT_BASE + (unsigned long)(x) - VDSO_PRELINK)
254
255#define VDSO_HIGH_EHDR ((const struct elfhdr *) VDSO_HIGH_BASE)
256#define VDSO_EHDR ((const struct elfhdr *) VDSO_CURRENT_BASE)
257
258extern void __kernel_vsyscall;
259
260#define VDSO_ENTRY VDSO_SYM(&__kernel_vsyscall)
261
262/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
263
264#define ARCH_DLINFO \
265do if (vdso_enabled) { \
266 NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
267 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
268} while (0)
269
270#else /* CONFIG_X86_32 */
271
272/* 1GB for 64bit, 8MB for 32bit */
273#define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
274
275#define ARCH_DLINFO \
276do if (vdso_enabled) { \
277 NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\
278} while (0)
279
280#endif /* !CONFIG_X86_32 */
281
282struct linux_binprm;
283
284#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
285extern int arch_setup_additional_pages(struct linux_binprm *bprm,
286 int executable_stack);
287
288#endif /* __KERNEL__ */
289
13#endif 290#endif
diff --git a/include/asm-x86/elf_32.h b/include/asm-x86/elf_32.h
deleted file mode 100644
index b3f694eaaf37..000000000000
--- a/include/asm-x86/elf_32.h
+++ /dev/null
@@ -1,165 +0,0 @@
1#ifndef __ASMi386_ELF_H
2#define __ASMi386_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#define R_386_NONE 0
13#define R_386_32 1
14#define R_386_PC32 2
15#define R_386_GOT32 3
16#define R_386_PLT32 4
17#define R_386_COPY 5
18#define R_386_GLOB_DAT 6
19#define R_386_JMP_SLOT 7
20#define R_386_RELATIVE 8
21#define R_386_GOTOFF 9
22#define R_386_GOTPC 10
23#define R_386_NUM 11
24
25typedef unsigned long elf_greg_t;
26
27#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
28typedef elf_greg_t elf_gregset_t[ELF_NGREG];
29
30typedef struct user_i387_struct elf_fpregset_t;
31typedef struct user_fxsr_struct elf_fpxregset_t;
32
33/*
34 * This is used to ensure we don't load something for the wrong architecture.
35 */
36#define elf_check_arch(x) \
37 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
38
39/*
40 * These are used to set parameters in the core dumps.
41 */
42#define ELF_CLASS ELFCLASS32
43#define ELF_DATA ELFDATA2LSB
44#define ELF_ARCH EM_386
45
46#ifdef __KERNEL__
47
48#include <asm/processor.h>
49#include <asm/system.h> /* for savesegment */
50#include <asm/desc.h>
51
52/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
53 contains a pointer to a function which might be registered using `atexit'.
54 This provides a mean for the dynamic linker to call DT_FINI functions for
55 shared libraries that have been loaded before the code runs.
56
57 A value of 0 tells we have no such handler.
58
59 We might as well make sure everything else is cleared too (except for %esp),
60 just to make things more deterministic.
61 */
62#define ELF_PLAT_INIT(_r, load_addr) do { \
63 _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \
64 _r->esi = 0; _r->edi = 0; _r->ebp = 0; \
65 _r->eax = 0; \
66} while (0)
67
68#define USE_ELF_CORE_DUMP
69#define ELF_EXEC_PAGESIZE 4096
70
71/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
72 use of this is to invoke "./ld.so someprog" to test out a new version of
73 the loader. We need to make sure that it is out of the way of the program
74 that it will "exec", and that there is sufficient room for the brk. */
75
76#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
77
78/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
79 now struct_user_regs, they are different) */
80
81#define ELF_CORE_COPY_REGS(pr_reg, regs) \
82 pr_reg[0] = regs->ebx; \
83 pr_reg[1] = regs->ecx; \
84 pr_reg[2] = regs->edx; \
85 pr_reg[3] = regs->esi; \
86 pr_reg[4] = regs->edi; \
87 pr_reg[5] = regs->ebp; \
88 pr_reg[6] = regs->eax; \
89 pr_reg[7] = regs->xds & 0xffff; \
90 pr_reg[8] = regs->xes & 0xffff; \
91 pr_reg[9] = regs->xfs & 0xffff; \
92 savesegment(gs,pr_reg[10]); \
93 pr_reg[11] = regs->orig_eax; \
94 pr_reg[12] = regs->eip; \
95 pr_reg[13] = regs->xcs & 0xffff; \
96 pr_reg[14] = regs->eflags; \
97 pr_reg[15] = regs->esp; \
98 pr_reg[16] = regs->xss & 0xffff;
99
100/* This yields a mask that user programs can use to figure out what
101 instruction set this CPU supports. This could be done in user space,
102 but it's not easy, and we've already done it here. */
103
104#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
105
106/* This yields a string that ld.so will use to load implementation
107 specific libraries for optimization. This is more specific in
108 intent than poking at uname or /proc/cpuinfo.
109
110 For the moment, we have only optimizations for the Intel generations,
111 but that could change... */
112
113#define ELF_PLATFORM (utsname()->machine)
114
115#define SET_PERSONALITY(ex, ibcs2) do { } while (0)
116
117/*
118 * An executable for which elf_read_implies_exec() returns TRUE will
119 * have the READ_IMPLIES_EXEC personality flag set automatically.
120 */
121#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X)
122
123struct task_struct;
124
125extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
126extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
127extern int dump_task_extended_fpu (struct task_struct *, struct user_fxsr_struct *);
128
129#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
130#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
131#define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) dump_task_extended_fpu(tsk, elf_xfpregs)
132#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
133
134#define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
135#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
136#define VDSO_PRELINK 0
137
138#define VDSO_SYM(x) \
139 (VDSO_CURRENT_BASE + (unsigned long)(x) - VDSO_PRELINK)
140
141#define VDSO_HIGH_EHDR ((const struct elfhdr *) VDSO_HIGH_BASE)
142#define VDSO_EHDR ((const struct elfhdr *) VDSO_CURRENT_BASE)
143
144extern void __kernel_vsyscall;
145
146#define VDSO_ENTRY VDSO_SYM(&__kernel_vsyscall)
147
148struct linux_binprm;
149
150#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
151extern int arch_setup_additional_pages(struct linux_binprm *bprm,
152 int executable_stack);
153
154extern unsigned int vdso_enabled;
155
156/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
157#define ARCH_DLINFO \
158do if (vdso_enabled) { \
159 NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
160 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
161} while (0)
162
163#endif
164
165#endif
diff --git a/include/asm-x86/elf_64.h b/include/asm-x86/elf_64.h
deleted file mode 100644
index b4fbe47f6ccd..000000000000
--- a/include/asm-x86/elf_64.h
+++ /dev/null
@@ -1,180 +0,0 @@
1#ifndef __ASM_X86_64_ELF_H
2#define __ASM_X86_64_ELF_H
3
4/*
5 * ELF register definitions..
6 */
7
8#include <asm/ptrace.h>
9#include <asm/user.h>
10
11/* x86-64 relocation types */
12#define R_X86_64_NONE 0 /* No reloc */
13#define R_X86_64_64 1 /* Direct 64 bit */
14#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
15#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
16#define R_X86_64_PLT32 4 /* 32 bit PLT address */
17#define R_X86_64_COPY 5 /* Copy symbol at runtime */
18#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
19#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
20#define R_X86_64_RELATIVE 8 /* Adjust by program base */
21#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative
22 offset to GOT */
23#define R_X86_64_32 10 /* Direct 32 bit zero extended */
24#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
25#define R_X86_64_16 12 /* Direct 16 bit zero extended */
26#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
27#define R_X86_64_8 14 /* Direct 8 bit sign extended */
28#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
29
30#define R_X86_64_NUM 16
31
32typedef unsigned long elf_greg_t;
33
34#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
35typedef elf_greg_t elf_gregset_t[ELF_NGREG];
36
37typedef struct user_i387_struct elf_fpregset_t;
38
39/*
40 * These are used to set parameters in the core dumps.
41 */
42#define ELF_CLASS ELFCLASS64
43#define ELF_DATA ELFDATA2LSB
44#define ELF_ARCH EM_X86_64
45
46#ifdef __KERNEL__
47#include <asm/processor.h>
48
49/*
50 * This is used to ensure we don't load something for the wrong architecture.
51 */
52#define elf_check_arch(x) \
53 ((x)->e_machine == EM_X86_64)
54
55
56/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
57 contains a pointer to a function which might be registered using `atexit'.
58 This provides a mean for the dynamic linker to call DT_FINI functions for
59 shared libraries that have been loaded before the code runs.
60
61 A value of 0 tells we have no such handler.
62
63 We might as well make sure everything else is cleared too (except for %esp),
64 just to make things more deterministic.
65 */
66#define ELF_PLAT_INIT(_r, load_addr) do { \
67 struct task_struct *cur = current; \
68 (_r)->rbx = 0; (_r)->rcx = 0; (_r)->rdx = 0; \
69 (_r)->rsi = 0; (_r)->rdi = 0; (_r)->rbp = 0; \
70 (_r)->rax = 0; \
71 (_r)->r8 = 0; \
72 (_r)->r9 = 0; \
73 (_r)->r10 = 0; \
74 (_r)->r11 = 0; \
75 (_r)->r12 = 0; \
76 (_r)->r13 = 0; \
77 (_r)->r14 = 0; \
78 (_r)->r15 = 0; \
79 cur->thread.fs = 0; cur->thread.gs = 0; \
80 cur->thread.fsindex = 0; cur->thread.gsindex = 0; \
81 cur->thread.ds = 0; cur->thread.es = 0; \
82 clear_thread_flag(TIF_IA32); \
83} while (0)
84
85#define USE_ELF_CORE_DUMP
86#define ELF_EXEC_PAGESIZE 4096
87
88/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
89 use of this is to invoke "./ld.so someprog" to test out a new version of
90 the loader. We need to make sure that it is out of the way of the program
91 that it will "exec", and that there is sufficient room for the brk. */
92
93#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
94
95/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
96 now struct_user_regs, they are different). Assumes current is the process
97 getting dumped. */
98
99#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \
100 unsigned v; \
101 (pr_reg)[0] = (regs)->r15; \
102 (pr_reg)[1] = (regs)->r14; \
103 (pr_reg)[2] = (regs)->r13; \
104 (pr_reg)[3] = (regs)->r12; \
105 (pr_reg)[4] = (regs)->rbp; \
106 (pr_reg)[5] = (regs)->rbx; \
107 (pr_reg)[6] = (regs)->r11; \
108 (pr_reg)[7] = (regs)->r10; \
109 (pr_reg)[8] = (regs)->r9; \
110 (pr_reg)[9] = (regs)->r8; \
111 (pr_reg)[10] = (regs)->rax; \
112 (pr_reg)[11] = (regs)->rcx; \
113 (pr_reg)[12] = (regs)->rdx; \
114 (pr_reg)[13] = (regs)->rsi; \
115 (pr_reg)[14] = (regs)->rdi; \
116 (pr_reg)[15] = (regs)->orig_rax; \
117 (pr_reg)[16] = (regs)->rip; \
118 (pr_reg)[17] = (regs)->cs; \
119 (pr_reg)[18] = (regs)->eflags; \
120 (pr_reg)[19] = (regs)->rsp; \
121 (pr_reg)[20] = (regs)->ss; \
122 (pr_reg)[21] = current->thread.fs; \
123 (pr_reg)[22] = current->thread.gs; \
124 asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
125 asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
126 asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
127 asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \
128} while(0);
129
130/* This yields a mask that user programs can use to figure out what
131 instruction set this CPU supports. This could be done in user space,
132 but it's not easy, and we've already done it here. */
133
134#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
135
136/* This yields a string that ld.so will use to load implementation
137 specific libraries for optimization. This is more specific in
138 intent than poking at uname or /proc/cpuinfo.
139
140 For the moment, we have only optimizations for the Intel generations,
141 but that could change... */
142
143/* I'm not sure if we can use '-' here */
144#define ELF_PLATFORM ("x86_64")
145
146extern void set_personality_64bit(void);
147#define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
148/*
149 * An executable for which elf_read_implies_exec() returns TRUE will
150 * have the READ_IMPLIES_EXEC personality flag set automatically.
151 */
152#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X)
153
154struct task_struct;
155
156extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
157extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
158
159#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
160#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
161
162/* 1GB for 64bit, 8MB for 32bit */
163#define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
164
165
166#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
167struct linux_binprm;
168extern int arch_setup_additional_pages(struct linux_binprm *bprm,
169 int executable_stack);
170
171extern int vdso_enabled;
172
173#define ARCH_DLINFO \
174do if (vdso_enabled) { \
175 NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\
176} while (0)
177
178#endif
179
180#endif
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