source: svn/newcon3bcm2_21bu/toolchain/mips-linux-uclibc/include/asm/elf.h @ 43

Last change on this file since 43 was 43, checked in by megakiss, 11 years ago

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1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 */
6#ifndef _ASM_ELF_H
7#define _ASM_ELF_H
8
9
10/* ELF header e_flags defines. */
11/* MIPS architecture level. */
12#define EF_MIPS_ARCH_1          0x00000000      /* -mips1 code.  */
13#define EF_MIPS_ARCH_2          0x10000000      /* -mips2 code.  */
14#define EF_MIPS_ARCH_3          0x20000000      /* -mips3 code.  */
15#define EF_MIPS_ARCH_4          0x30000000      /* -mips4 code.  */
16#define EF_MIPS_ARCH_5          0x40000000      /* -mips5 code.  */
17#define EF_MIPS_ARCH_32         0x50000000      /* MIPS32 code.  */
18#define EF_MIPS_ARCH_64         0x60000000      /* MIPS64 code.  */
19
20/* The ABI of a file. */
21#define EF_MIPS_ABI_O32         0x00001000      /* O32 ABI.  */
22#define EF_MIPS_ABI_O64         0x00002000      /* O32 extended for 64 bit.  */
23
24#define PT_MIPS_REGINFO         0x70000000
25#define PT_MIPS_RTPROC          0x70000001
26#define PT_MIPS_OPTIONS         0x70000002
27
28/* Flags in the e_flags field of the header */
29#define EF_MIPS_NOREORDER       0x00000001
30#define EF_MIPS_PIC             0x00000002
31#define EF_MIPS_CPIC            0x00000004
32#define EF_MIPS_ABI2            0x00000020
33#define EF_MIPS_OPTIONS_FIRST   0x00000080
34#define EF_MIPS_32BITMODE       0x00000100
35#define EF_MIPS_ABI             0x0000f000
36#define EF_MIPS_ARCH            0xf0000000
37
38#define DT_MIPS_RLD_VERSION     0x70000001
39#define DT_MIPS_TIME_STAMP      0x70000002
40#define DT_MIPS_ICHECKSUM       0x70000003
41#define DT_MIPS_IVERSION        0x70000004
42#define DT_MIPS_FLAGS           0x70000005
43        #define RHF_NONE        0x00000000
44        #define RHF_HARDWAY     0x00000001
45        #define RHF_NOTPOT      0x00000002
46        #define RHF_SGI_ONLY    0x00000010
47#define DT_MIPS_BASE_ADDRESS    0x70000006
48#define DT_MIPS_CONFLICT        0x70000008
49#define DT_MIPS_LIBLIST         0x70000009
50#define DT_MIPS_LOCAL_GOTNO     0x7000000a
51#define DT_MIPS_CONFLICTNO      0x7000000b
52#define DT_MIPS_LIBLISTNO       0x70000010
53#define DT_MIPS_SYMTABNO        0x70000011
54#define DT_MIPS_UNREFEXTNO      0x70000012
55#define DT_MIPS_GOTSYM          0x70000013
56#define DT_MIPS_HIPAGENO        0x70000014
57#define DT_MIPS_RLD_MAP         0x70000016
58
59#define R_MIPS_NONE             0
60#define R_MIPS_16               1
61#define R_MIPS_32               2
62#define R_MIPS_REL32            3
63#define R_MIPS_26               4
64#define R_MIPS_HI16             5
65#define R_MIPS_LO16             6
66#define R_MIPS_GPREL16          7
67#define R_MIPS_LITERAL          8
68#define R_MIPS_GOT16            9
69#define R_MIPS_PC16             10
70#define R_MIPS_CALL16           11
71#define R_MIPS_GPREL32          12
72/* The remaining relocs are defined on Irix, although they are not
73   in the MIPS ELF ABI.  */
74#define R_MIPS_UNUSED1          13
75#define R_MIPS_UNUSED2          14
76#define R_MIPS_UNUSED3          15
77#define R_MIPS_SHIFT5           16
78#define R_MIPS_SHIFT6           17
79#define R_MIPS_64               18
80#define R_MIPS_GOT_DISP         19
81#define R_MIPS_GOT_PAGE         20
82#define R_MIPS_GOT_OFST         21
83/*
84 * The following two relocation types are specified in the MIPS ABI
85 * conformance guide version 1.2 but not yet in the psABI.
86 */
87#define R_MIPS_GOTHI16          22
88#define R_MIPS_GOTLO16          23
89#define R_MIPS_SUB              24
90#define R_MIPS_INSERT_A         25
91#define R_MIPS_INSERT_B         26
92#define R_MIPS_DELETE           27
93#define R_MIPS_HIGHER           28
94#define R_MIPS_HIGHEST          29
95/*
96 * The following two relocation types are specified in the MIPS ABI
97 * conformance guide version 1.2 but not yet in the psABI.
98 */
99#define R_MIPS_CALLHI16         30
100#define R_MIPS_CALLLO16         31
101/*
102 * This range is reserved for vendor specific relocations.
103 */
104#define R_MIPS_LOVENDOR         100
105#define R_MIPS_HIVENDOR         127
106
107#define SHN_MIPS_ACCOMON        0xff00
108
109#define SHT_MIPS_LIST           0x70000000
110#define SHT_MIPS_CONFLICT       0x70000002
111#define SHT_MIPS_GPTAB          0x70000003
112#define SHT_MIPS_UCODE          0x70000004
113
114#define SHF_MIPS_GPREL  0x10000000
115
116#ifndef ELF_ARCH
117/* ELF register definitions */
118#define ELF_NGREG       45
119#define ELF_NFPREG      33
120
121typedef unsigned long elf_greg_t;
122typedef elf_greg_t elf_gregset_t[ELF_NGREG];
123
124typedef double elf_fpreg_t;
125typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
126
127#ifndef __mips64
128
129/*
130 * This is used to ensure we don't load something for the wrong architecture.
131 */
132#define elf_check_arch(hdr)                                             \
133({                                                                      \
134        int __res = 1;                                                  \
135        struct elfhdr *__h = (hdr);                                     \
136                                                                        \
137        if (__h->e_machine != EM_MIPS)                                  \
138                __res = 0;                                              \
139        if (__h->e_ident[EI_CLASS] != ELFCLASS32)                       \
140                __res = 0;                                              \
141        if ((__h->e_flags & EF_MIPS_ABI2) != 0)                         \
142                __res = 0;                                              \
143        if (((__h->e_flags & EF_MIPS_ABI) != 0) &&                      \
144            ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))          \
145                __res = 0;                                              \
146                                                                        \
147        __res;                                                          \
148})
149
150/*
151 * These are used to set parameters in the core dumps.
152 */
153#define ELF_CLASS       ELFCLASS32
154
155#endif /* CONFIG_MIPS32 */
156
157#ifdef __mips64
158/*
159 * This is used to ensure we don't load something for the wrong architecture.
160 */
161#define elf_check_arch(hdr)                                             \
162({                                                                      \
163        int __res = 1;                                                  \
164        struct elfhdr *__h = (hdr);                                     \
165                                                                        \
166        if (__h->e_machine != EM_MIPS)                                  \
167                __res = 0;                                              \
168        if (__h->e_ident[EI_CLASS] != ELFCLASS64)                       \
169                __res = 0;                                              \
170                                                                        \
171        __res;                                                          \
172})
173
174/*
175 * These are used to set parameters in the core dumps.
176 */
177#define ELF_CLASS       ELFCLASS64
178
179#endif /* CONFIG_MIPS64 */
180
181/*
182 * These are used to set parameters in the core dumps.
183 */
184#ifdef __MIPSEB__
185#define ELF_DATA        ELFDATA2MSB
186#elif __MIPSEL__
187#define ELF_DATA        ELFDATA2LSB
188#endif
189#define ELF_ARCH        EM_MIPS
190
191#endif /* !defined(ELF_ARCH) */
192
193
194/* This one accepts IRIX binaries.  */
195#define irix_elf_check_arch(hdr)        ((hdr)->e_machine == EM_MIPS)
196
197#define USE_ELF_CORE_DUMP
198#define ELF_EXEC_PAGESIZE       PAGE_SIZE
199
200#define ELF_CORE_COPY_REGS(_dest,_regs)                         \
201        memcpy((char *) &_dest, (char *) _regs,                 \
202               sizeof(struct pt_regs));
203
204/* This yields a mask that user programs can use to figure out what
205   instruction set this cpu supports.  This could be done in userspace,
206   but it's not easy, and we've already done it here.  */
207
208#define ELF_HWCAP       (0)
209
210/* This yields a string that ld.so will use to load implementation
211   specific libraries for optimization.  This is more specific in
212   intent than poking at uname or /proc/cpuinfo.
213
214   For the moment, we have only optimizations for the Intel generations,
215   but that could change... */
216
217#define ELF_PLATFORM  (NULL)
218
219extern void dump_regs(elf_greg_t *, struct pt_regs *regs);
220extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
221
222#define ELF_CORE_COPY_REGS(elf_regs, regs)                      \
223        dump_regs((elf_greg_t *)&(elf_regs), regs);
224#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs)                   \
225        dump_task_fpu(tsk, elf_fpregs)
226
227/*
228 * See comments in asm-alpha/elf.h, this is the same thing
229 * on the MIPS.
230 */
231#define ELF_PLAT_INIT(_r, load_addr)    do { \
232        _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;      \
233        _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;      \
234        _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;   \
235        _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;  \
236        _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;  \
237        _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;  \
238        _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;  \
239        _r->regs[30] = _r->regs[31] = 0;                                \
240} while (0)
241
242/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
243   use of this is to invoke "./ld.so someprog" to test out a new version of
244   the loader.  We need to make sure that it is out of the way of the program
245   that it will "exec", and that there is sufficient room for the brk.  */
246
247#ifndef ELF_ET_DYN_BASE
248#define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
249#endif
250
251#endif /* _ASM_ELF_H */
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