Merge branch 'upstream'
[linux-2.6] / include / asm-um / elf-i386.h
1 /*
2  * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
3  * Licensed under the GPL
4  */
5 #ifndef __UM_ELF_I386_H
6 #define __UM_ELF_I386_H
7
8 #include <asm/user.h>
9
10 #define R_386_NONE      0
11 #define R_386_32        1
12 #define R_386_PC32      2
13 #define R_386_GOT32     3
14 #define R_386_PLT32     4
15 #define R_386_COPY      5
16 #define R_386_GLOB_DAT  6
17 #define R_386_JMP_SLOT  7
18 #define R_386_RELATIVE  8
19 #define R_386_GOTOFF    9
20 #define R_386_GOTPC     10
21 #define R_386_NUM       11
22
23 typedef unsigned long elf_greg_t;
24
25 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
26 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
27
28 typedef struct user_i387_struct elf_fpregset_t;
29
30 /*
31  * This is used to ensure we don't load something for the wrong architecture.
32  */
33 #define elf_check_arch(x) \
34         (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
35
36 #define ELF_CLASS       ELFCLASS32
37 #define ELF_DATA        ELFDATA2LSB
38 #define ELF_ARCH        EM_386
39
40 #define ELF_PLAT_INIT(regs, load_addr) do { \
41         PT_REGS_EBX(regs) = 0; \
42         PT_REGS_ECX(regs) = 0; \
43         PT_REGS_EDX(regs) = 0; \
44         PT_REGS_ESI(regs) = 0; \
45         PT_REGS_EDI(regs) = 0; \
46         PT_REGS_EBP(regs) = 0; \
47         PT_REGS_EAX(regs) = 0; \
48 } while(0)
49
50 #define USE_ELF_CORE_DUMP
51 #define ELF_EXEC_PAGESIZE 4096
52
53 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
54
55 /* Shamelessly stolen from include/asm-i386/elf.h */
56
57 #define ELF_CORE_COPY_REGS(pr_reg, regs) do {   \
58         pr_reg[0] = PT_REGS_EBX(regs);          \
59         pr_reg[1] = PT_REGS_ECX(regs);          \
60         pr_reg[2] = PT_REGS_EDX(regs);          \
61         pr_reg[3] = PT_REGS_ESI(regs);          \
62         pr_reg[4] = PT_REGS_EDI(regs);          \
63         pr_reg[5] = PT_REGS_EBP(regs);          \
64         pr_reg[6] = PT_REGS_EAX(regs);          \
65         pr_reg[7] = PT_REGS_DS(regs);           \
66         pr_reg[8] = PT_REGS_ES(regs);           \
67         /* fake once used fs and gs selectors? */       \
68         pr_reg[9] = PT_REGS_DS(regs);           \
69         pr_reg[10] = PT_REGS_DS(regs);          \
70         pr_reg[11] = PT_REGS_SYSCALL_NR(regs);  \
71         pr_reg[12] = PT_REGS_IP(regs);          \
72         pr_reg[13] = PT_REGS_CS(regs);          \
73         pr_reg[14] = PT_REGS_EFLAGS(regs);      \
74         pr_reg[15] = PT_REGS_SP(regs);          \
75         pr_reg[16] = PT_REGS_SS(regs);          \
76 } while(0);
77
78 extern long elf_aux_hwcap;
79 #define ELF_HWCAP (elf_aux_hwcap)
80
81 extern char * elf_aux_platform;
82 #define ELF_PLATFORM (elf_aux_platform)
83
84 #define SET_PERSONALITY(ex, ibcs2) do ; while(0)
85
86 extern unsigned long vsyscall_ehdr;
87 extern unsigned long vsyscall_end;
88 extern unsigned long __kernel_vsyscall;
89
90 #define VSYSCALL_BASE vsyscall_ehdr
91 #define VSYSCALL_END vsyscall_end
92
93 /*
94  * This is the range that is readable by user mode, and things
95  * acting like user mode such as get_user_pages.
96  */
97 #define FIXADDR_USER_START      VSYSCALL_BASE
98 #define FIXADDR_USER_END        VSYSCALL_END
99
100 /*
101  * Architecture-neutral AT_ values in 0-17, leave some room
102  * for more of them, start the x86-specific ones at 32.
103  */
104 #define AT_SYSINFO              32
105 #define AT_SYSINFO_EHDR         33
106
107 #define ARCH_DLINFO                                             \
108 do {                                                            \
109         if ( vsyscall_ehdr ) {                                  \
110                 NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall);     \
111                 NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr);    \
112         }                                                       \
113 } while (0)
114
115 /*
116  * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
117  * extra segments containing the vsyscall DSO contents.  Dumping its
118  * contents makes post-mortem fully interpretable later without matching up
119  * the same kernel and hardware config to see what PC values meant.
120  * Dumping its extra ELF program headers includes all the other information
121  * a debugger needs to easily find how the vsyscall DSO was being used.
122  */
123 #define ELF_CORE_EXTRA_PHDRS                                                  \
124         (vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0 )
125
126 #define ELF_CORE_WRITE_EXTRA_PHDRS                                            \
127 if ( vsyscall_ehdr ) {                                                        \
128         const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr;    \
129         const struct elf_phdr *const phdrp =                                  \
130                 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);   \
131         int i;                                                                \
132         Elf32_Off ofs = 0;                                                    \
133         for (i = 0; i < ehdrp->e_phnum; ++i) {                                \
134                 struct elf_phdr phdr = phdrp[i];                              \
135                 if (phdr.p_type == PT_LOAD) {                                 \
136                         ofs = phdr.p_offset = offset;                         \
137                         offset += phdr.p_filesz;                              \
138                 }                                                             \
139                 else                                                          \
140                         phdr.p_offset += ofs;                                 \
141                 phdr.p_paddr = 0; /* match other core phdrs */                \
142                 DUMP_WRITE(&phdr, sizeof(phdr));                              \
143         }                                                                     \
144 }
145 #define ELF_CORE_WRITE_EXTRA_DATA                                             \
146 if ( vsyscall_ehdr ) {                                                        \
147         const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr;    \
148         const struct elf_phdr *const phdrp =                                  \
149                 (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);   \
150         int i;                                                                \
151         for (i = 0; i < ehdrp->e_phnum; ++i) {                                \
152                 if (phdrp[i].p_type == PT_LOAD)                               \
153                         DUMP_WRITE((void *) phdrp[i].p_vaddr,                 \
154                                    phdrp[i].p_filesz);                        \
155         }                                                                     \
156 }
157
158 #endif
159
160 /*
161  * Overrides for Emacs so that we follow Linus's tabbing style.
162  * Emacs will notice this stuff at the end of the file and automatically
163  * adjust the settings for this buffer only.  This must remain at the end
164  * of the file.
165  * ---------------------------------------------------------------------------
166  * Local variables:
167  * c-file-style: "linux"
168  * End:
169  */