Merge branch 'fix/hda' into for-linus
[pandora-kernel.git] / arch / x86 / include / asm / elf.h
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
43 #else
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 #include <asm/vdso.h>
76
77 extern unsigned int vdso_enabled;
78
79 /*
80  * This is used to ensure we don't load something for the wrong architecture.
81  */
82 #define elf_check_arch_ia32(x) \
83         (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
84
85 #include <asm/processor.h>
86 #include <asm/system.h>
87
88 #ifdef CONFIG_X86_32
89 #include <asm/desc.h>
90
91 #define elf_check_arch(x)       elf_check_arch_ia32(x)
92
93 /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
94    contains a pointer to a function which might be registered using `atexit'.
95    This provides a mean for the dynamic linker to call DT_FINI functions for
96    shared libraries that have been loaded before the code runs.
97
98    A value of 0 tells we have no such handler.
99
100    We might as well make sure everything else is cleared too (except for %esp),
101    just to make things more deterministic.
102  */
103 #define ELF_PLAT_INIT(_r, load_addr)            \
104         do {                                    \
105         _r->bx = 0; _r->cx = 0; _r->dx = 0;     \
106         _r->si = 0; _r->di = 0; _r->bp = 0;     \
107         _r->ax = 0;                             \
108 } while (0)
109
110 /*
111  * regs is struct pt_regs, pr_reg is elf_gregset_t (which is
112  * now struct_user_regs, they are different)
113  */
114
115 #define ELF_CORE_COPY_REGS_COMMON(pr_reg, regs) \
116 do {                                            \
117         pr_reg[0] = regs->bx;                   \
118         pr_reg[1] = regs->cx;                   \
119         pr_reg[2] = regs->dx;                   \
120         pr_reg[3] = regs->si;                   \
121         pr_reg[4] = regs->di;                   \
122         pr_reg[5] = regs->bp;                   \
123         pr_reg[6] = regs->ax;                   \
124         pr_reg[7] = regs->ds & 0xffff;          \
125         pr_reg[8] = regs->es & 0xffff;          \
126         pr_reg[9] = regs->fs & 0xffff;          \
127         pr_reg[11] = regs->orig_ax;             \
128         pr_reg[12] = regs->ip;                  \
129         pr_reg[13] = regs->cs & 0xffff;         \
130         pr_reg[14] = regs->flags;               \
131         pr_reg[15] = regs->sp;                  \
132         pr_reg[16] = regs->ss & 0xffff;         \
133 } while (0);
134
135 #define ELF_CORE_COPY_REGS(pr_reg, regs)        \
136 do {                                            \
137         ELF_CORE_COPY_REGS_COMMON(pr_reg, regs);\
138         pr_reg[10] = get_user_gs(regs);         \
139 } while (0);
140
141 #define ELF_CORE_COPY_KERNEL_REGS(pr_reg, regs) \
142 do {                                            \
143         ELF_CORE_COPY_REGS_COMMON(pr_reg, regs);\
144         savesegment(gs, pr_reg[10]);            \
145 } while (0);
146
147 #define ELF_PLATFORM    (utsname()->machine)
148 #define set_personality_64bit() do { } while (0)
149
150 #else /* CONFIG_X86_32 */
151
152 /*
153  * This is used to ensure we don't load something for the wrong architecture.
154  */
155 #define elf_check_arch(x)                       \
156         ((x)->e_machine == EM_X86_64)
157
158 #define compat_elf_check_arch(x)        elf_check_arch_ia32(x)
159
160 static inline void elf_common_init(struct thread_struct *t,
161                                    struct pt_regs *regs, const u16 ds)
162 {
163         regs->ax = regs->bx = regs->cx = regs->dx = 0;
164         regs->si = regs->di = regs->bp = 0;
165         regs->r8 = regs->r9 = regs->r10 = regs->r11 = 0;
166         regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
167         t->fs = t->gs = 0;
168         t->fsindex = t->gsindex = 0;
169         t->ds = t->es = ds;
170 }
171
172 #define ELF_PLAT_INIT(_r, load_addr)                    \
173 do {                                                    \
174         elf_common_init(&current->thread, _r, 0);       \
175         clear_thread_flag(TIF_IA32);                    \
176 } while (0)
177
178 #define COMPAT_ELF_PLAT_INIT(regs, load_addr)           \
179         elf_common_init(&current->thread, regs, __USER_DS)
180
181 void start_thread_ia32(struct pt_regs *regs, u32 new_ip, u32 new_sp);
182 #define compat_start_thread start_thread_ia32
183
184 #define COMPAT_SET_PERSONALITY(ex)                      \
185 do {                                                    \
186         if (test_thread_flag(TIF_IA32))                 \
187                 clear_thread_flag(TIF_ABI_PENDING);     \
188         else                                            \
189                 set_thread_flag(TIF_ABI_PENDING);       \
190         current->personality |= force_personality32;    \
191 } while (0)
192
193 #define COMPAT_ELF_PLATFORM                     ("i686")
194
195 /*
196  * regs is struct pt_regs, pr_reg is elf_gregset_t (which is
197  * now struct_user_regs, they are different). Assumes current is the process
198  * getting dumped.
199  */
200
201 #define ELF_CORE_COPY_REGS(pr_reg, regs)                        \
202 do {                                                            \
203         unsigned v;                                             \
204         (pr_reg)[0] = (regs)->r15;                              \
205         (pr_reg)[1] = (regs)->r14;                              \
206         (pr_reg)[2] = (regs)->r13;                              \
207         (pr_reg)[3] = (regs)->r12;                              \
208         (pr_reg)[4] = (regs)->bp;                               \
209         (pr_reg)[5] = (regs)->bx;                               \
210         (pr_reg)[6] = (regs)->r11;                              \
211         (pr_reg)[7] = (regs)->r10;                              \
212         (pr_reg)[8] = (regs)->r9;                               \
213         (pr_reg)[9] = (regs)->r8;                               \
214         (pr_reg)[10] = (regs)->ax;                              \
215         (pr_reg)[11] = (regs)->cx;                              \
216         (pr_reg)[12] = (regs)->dx;                              \
217         (pr_reg)[13] = (regs)->si;                              \
218         (pr_reg)[14] = (regs)->di;                              \
219         (pr_reg)[15] = (regs)->orig_ax;                         \
220         (pr_reg)[16] = (regs)->ip;                              \
221         (pr_reg)[17] = (regs)->cs;                              \
222         (pr_reg)[18] = (regs)->flags;                           \
223         (pr_reg)[19] = (regs)->sp;                              \
224         (pr_reg)[20] = (regs)->ss;                              \
225         (pr_reg)[21] = current->thread.fs;                      \
226         (pr_reg)[22] = current->thread.gs;                      \
227         asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v;       \
228         asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v;       \
229         asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v;       \
230         asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v;       \
231 } while (0);
232
233 /* I'm not sure if we can use '-' here */
234 #define ELF_PLATFORM       ("x86_64")
235 extern void set_personality_64bit(void);
236 extern unsigned int sysctl_vsyscall32;
237 extern int force_personality32;
238
239 #endif /* !CONFIG_X86_32 */
240
241 #define CORE_DUMP_USE_REGSET
242 #define ELF_EXEC_PAGESIZE       4096
243
244 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
245    use of this is to invoke "./ld.so someprog" to test out a new version of
246    the loader.  We need to make sure that it is out of the way of the program
247    that it will "exec", and that there is sufficient room for the brk.  */
248
249 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
250
251 /* This yields a mask that user programs can use to figure out what
252    instruction set this CPU supports.  This could be done in user space,
253    but it's not easy, and we've already done it here.  */
254
255 #define ELF_HWCAP               (boot_cpu_data.x86_capability[0])
256
257 /* This yields a string that ld.so will use to load implementation
258    specific libraries for optimization.  This is more specific in
259    intent than poking at uname or /proc/cpuinfo.
260
261    For the moment, we have only optimizations for the Intel generations,
262    but that could change... */
263
264 #define SET_PERSONALITY(ex) set_personality_64bit()
265
266 /*
267  * An executable for which elf_read_implies_exec() returns TRUE will
268  * have the READ_IMPLIES_EXEC personality flag set automatically.
269  */
270 #define elf_read_implies_exec(ex, executable_stack)     \
271         (executable_stack != EXSTACK_DISABLE_X)
272
273 struct task_struct;
274
275 #define ARCH_DLINFO_IA32(vdso_enabled)                                  \
276 do {                                                                    \
277         if (vdso_enabled) {                                             \
278                 NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY);                    \
279                 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);        \
280         }                                                               \
281 } while (0)
282
283 #ifdef CONFIG_X86_32
284
285 #define STACK_RND_MASK (0x7ff)
286
287 #define VDSO_HIGH_BASE          (__fix_to_virt(FIX_VDSO))
288
289 #define ARCH_DLINFO             ARCH_DLINFO_IA32(vdso_enabled)
290
291 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
292
293 #else /* CONFIG_X86_32 */
294
295 #define VDSO_HIGH_BASE          0xffffe000U /* CONFIG_COMPAT_VDSO address */
296
297 /* 1GB for 64bit, 8MB for 32bit */
298 #define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
299
300 #define ARCH_DLINFO                                                     \
301 do {                                                                    \
302         if (vdso_enabled)                                               \
303                 NEW_AUX_ENT(AT_SYSINFO_EHDR,                            \
304                             (unsigned long)current->mm->context.vdso);  \
305 } while (0)
306
307 #define AT_SYSINFO              32
308
309 #define COMPAT_ARCH_DLINFO      ARCH_DLINFO_IA32(sysctl_vsyscall32)
310
311 #define COMPAT_ELF_ET_DYN_BASE  (TASK_UNMAPPED_BASE + 0x1000000)
312
313 #endif /* !CONFIG_X86_32 */
314
315 #define VDSO_CURRENT_BASE       ((unsigned long)current->mm->context.vdso)
316
317 #define VDSO_ENTRY                                                      \
318         ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
319
320 struct linux_binprm;
321
322 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
323 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
324                                        int uses_interp);
325
326 extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
327 #define compat_arch_setup_additional_pages      syscall32_setup_pages
328
329 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
330 #define arch_randomize_brk arch_randomize_brk
331
332 #endif /* _ASM_X86_ELF_H */