Linux kernel mirror (for testing)
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1#ifndef __PPC_ELF_H
2#define __PPC_ELF_H
3
4/*
5 * ELF register definitions..
6 */
7#include <asm/types.h>
8#include <asm/ptrace.h>
9#include <asm/cputable.h>
10#include <asm/auxvec.h>
11
12/* PowerPC relocations defined by the ABIs */
13#define R_PPC_NONE 0
14#define R_PPC_ADDR32 1 /* 32bit absolute address */
15#define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored. */
16#define R_PPC_ADDR16 3 /* 16bit absolute address */
17#define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */
18#define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */
19#define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */
20#define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */
21#define R_PPC_ADDR14_BRTAKEN 8
22#define R_PPC_ADDR14_BRNTAKEN 9
23#define R_PPC_REL24 10 /* PC relative 26 bit */
24#define R_PPC_REL14 11 /* PC relative 16 bit */
25#define R_PPC_REL14_BRTAKEN 12
26#define R_PPC_REL14_BRNTAKEN 13
27#define R_PPC_GOT16 14
28#define R_PPC_GOT16_LO 15
29#define R_PPC_GOT16_HI 16
30#define R_PPC_GOT16_HA 17
31#define R_PPC_PLTREL24 18
32#define R_PPC_COPY 19
33#define R_PPC_GLOB_DAT 20
34#define R_PPC_JMP_SLOT 21
35#define R_PPC_RELATIVE 22
36#define R_PPC_LOCAL24PC 23
37#define R_PPC_UADDR32 24
38#define R_PPC_UADDR16 25
39#define R_PPC_REL32 26
40#define R_PPC_PLT32 27
41#define R_PPC_PLTREL32 28
42#define R_PPC_PLT16_LO 29
43#define R_PPC_PLT16_HI 30
44#define R_PPC_PLT16_HA 31
45#define R_PPC_SDAREL16 32
46#define R_PPC_SECTOFF 33
47#define R_PPC_SECTOFF_LO 34
48#define R_PPC_SECTOFF_HI 35
49#define R_PPC_SECTOFF_HA 36
50/* Keep this the last entry. */
51#define R_PPC_NUM 37
52
53#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
54#define ELF_NFPREG 33 /* includes fpscr */
55#define ELF_NVRREG 33 /* includes vscr */
56#define ELF_NEVRREG 34 /* includes acc (as 2) */
57
58/*
59 * These are used to set parameters in the core dumps.
60 */
61#define ELF_ARCH EM_PPC
62#define ELF_CLASS ELFCLASS32
63#define ELF_DATA ELFDATA2MSB
64
65/* General registers */
66typedef unsigned long elf_greg_t;
67typedef elf_greg_t elf_gregset_t[ELF_NGREG];
68
69/* Floating point registers */
70typedef double elf_fpreg_t;
71typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
72
73/* Altivec registers */
74typedef __vector128 elf_vrreg_t;
75typedef elf_vrreg_t elf_vrregset_t[ELF_NVRREG];
76
77#ifdef __KERNEL__
78
79struct task_struct;
80
81/*
82 * This is used to ensure we don't load something for the wrong architecture.
83 */
84
85#define elf_check_arch(x) ((x)->e_machine == EM_PPC)
86
87/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
88 use of this is to invoke "./ld.so someprog" to test out a new version of
89 the loader. We need to make sure that it is out of the way of the program
90 that it will "exec", and that there is sufficient room for the brk. */
91
92#define ELF_ET_DYN_BASE (0x08000000)
93
94#define USE_ELF_CORE_DUMP
95#define ELF_EXEC_PAGESIZE 4096
96
97#define ELF_CORE_COPY_REGS(gregs, regs) \
98 memcpy((gregs), (regs), sizeof(struct pt_regs)); \
99 memset((char *)(gregs) + sizeof(struct pt_regs), 0, \
100 sizeof(elf_gregset_t) - sizeof(struct pt_regs));
101
102#define ELF_CORE_COPY_TASK_REGS(t, elfregs) \
103 ((t)->thread.regs? \
104 ({ ELF_CORE_COPY_REGS((elfregs), (t)->thread.regs); 1; }): 0)
105
106extern int dump_task_fpu(struct task_struct *t, elf_fpregset_t *fpu);
107#define ELF_CORE_COPY_FPREGS(t, fpu) dump_task_fpu((t), (fpu))
108
109/* This yields a mask that user programs can use to figure out what
110 instruction set this cpu supports. This could be done in userspace,
111 but it's not easy, and we've already done it here. */
112
113#define ELF_HWCAP (cur_cpu_spec[0]->cpu_user_features)
114
115/* This yields a string that ld.so will use to load implementation
116 specific libraries for optimization. This is more specific in
117 intent than poking at uname or /proc/cpuinfo.
118
119 For the moment, we have only optimizations for the Intel generations,
120 but that could change... */
121
122#define ELF_PLATFORM (NULL)
123
124#define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
125
126extern int dcache_bsize;
127extern int icache_bsize;
128extern int ucache_bsize;
129
130/*
131 * The requirements here are:
132 * - keep the final alignment of sp (sp & 0xf)
133 * - make sure the 32-bit value at the first 16 byte aligned position of
134 * AUXV is greater than 16 for glibc compatibility.
135 * AT_IGNOREPPC is used for that.
136 * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
137 * even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
138 */
139#define ARCH_DLINFO \
140do { \
141 /* Handle glibc compatibility. */ \
142 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
143 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
144 /* Cache size items */ \
145 NEW_AUX_ENT(AT_DCACHEBSIZE, dcache_bsize); \
146 NEW_AUX_ENT(AT_ICACHEBSIZE, icache_bsize); \
147 NEW_AUX_ENT(AT_UCACHEBSIZE, ucache_bsize); \
148 } while (0)
149
150#endif /* __KERNEL__ */
151#endif