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review.evervolv.com / android_kernel_htc_msm8960 / cee9e8c5cb1554e9e85ad764d27b6c808555ed89 / . / include / asm-s390 / elf.h
blob: c0d629d61d3e835ab3031a3207c5b841884aec62 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
2 * include/asm-s390/elf.h
3 *
4 * S390 version
5 *
6 * Derived from "include/asm-i386/elf.h"
7 */
8
9#ifndef __ASMS390_ELF_H
10#define __ASMS390_ELF_H
11
12/* s390 relocations defined by the ABIs */
13#define R_390_NONE 0 /* No reloc. */
14#define R_390_8 1 /* Direct 8 bit. */
15#define R_390_12 2 /* Direct 12 bit. */
16#define R_390_16 3 /* Direct 16 bit. */
17#define R_390_32 4 /* Direct 32 bit. */
18#define R_390_PC32 5 /* PC relative 32 bit. */
19#define R_390_GOT12 6 /* 12 bit GOT offset. */
20#define R_390_GOT32 7 /* 32 bit GOT offset. */
21#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
22#define R_390_COPY 9 /* Copy symbol at runtime. */
23#define R_390_GLOB_DAT 10 /* Create GOT entry. */
24#define R_390_JMP_SLOT 11 /* Create PLT entry. */
25#define R_390_RELATIVE 12 /* Adjust by program base. */
26#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
27#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
28#define R_390_GOT16 15 /* 16 bit GOT offset. */
29#define R_390_PC16 16 /* PC relative 16 bit. */
30#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
31#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
32#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
33#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
34#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
35#define R_390_64 22 /* Direct 64 bit. */
36#define R_390_PC64 23 /* PC relative 64 bit. */
37#define R_390_GOT64 24 /* 64 bit GOT offset. */
38#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
39#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
40#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
41#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
42#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
43#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
44#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
45#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
46#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
47#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
48#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
49#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
50#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
51#define R_390_TLS_GDCALL 38 /* Tag for function call in general
52 dynamic TLS code. */
53#define R_390_TLS_LDCALL 39 /* Tag for function call in local
54 dynamic TLS code. */
55#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
56 thread local data. */
57#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
58 thread local data. */
59#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
60 block offset. */
61#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
62 block offset. */
63#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
64 block offset. */
65#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
66 thread local data in LD code. */
67#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
68 thread local data in LD code. */
69#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
70 negated static TLS block offset. */
71#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
72 negated static TLS block offset. */
73#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
74 negated static TLS block offset. */
75#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
76 static TLS block. */
77#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
78 static TLS block. */
79#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
80 block. */
81#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
82 block. */
83#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
84#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
85#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
86 block. */
87#define R_390_20 57 /* Direct 20 bit. */
88#define R_390_GOT20 58 /* 20 bit GOT offset. */
89#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */
90#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS
91 block offset. */
92/* Keep this the last entry. */
93#define R_390_NUM 61
94
95/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]96 * These are used to set parameters in the core dumps.
97 */
98#ifndef __s390x__
99#define ELF_CLASS ELFCLASS32
100#else /* __s390x__ */
101#define ELF_CLASS ELFCLASS64
102#endif /* __s390x__ */
103#define ELF_DATA ELFDATA2MSB
104#define ELF_ARCH EM_S390
105
106/*
David Woodhouse124b51c2006-09-16 12:15:46 -0700[diff] [blame]107 * ELF register definitions..
108 */
109
110#include <asm/ptrace.h>
111#include <asm/user.h>
112
113typedef s390_fp_regs elf_fpregset_t;
114typedef s390_regs elf_gregset_t;
115
116#ifdef __KERNEL__
117#include <linux/sched.h> /* for task_struct */
118#include <asm/system.h> /* for save_access_regs */
119
120/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]121 * This is used to ensure we don't load something for the wrong architecture.
122 */
123#define elf_check_arch(x) \
124 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
125 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
126
127/* For SVR4/S390 the function pointer to be registered with `atexit` is
128 passed in R14. */
129#define ELF_PLAT_INIT(_r, load_addr) \
130 do { \
131 _r->gprs[14] = 0; \
132 } while (0)
133
134#define USE_ELF_CORE_DUMP
135#define ELF_EXEC_PAGESIZE 4096
136
137/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
138 use of this is to invoke "./ld.so someprog" to test out a new version of
139 the loader. We need to make sure that it is out of the way of the program
140 that it will "exec", and that there is sufficient room for the brk. */
141
142#ifndef __s390x__
143#define ELF_ET_DYN_BASE ((TASK_SIZE & 0x80000000) \
144 ? TASK_SIZE / 3 * 2 \
145 : 2 * TASK_SIZE / 3)
146#else /* __s390x__ */
147#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
148#endif /* __s390x__ */
149
150/* Wow, the "main" arch needs arch dependent functions too.. :) */
151
152/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
153 now struct_user_regs, they are different) */
154
155static inline int dump_regs(struct pt_regs *ptregs, elf_gregset_t *regs)
156{
157 memcpy(&regs->psw, &ptregs->psw, sizeof(regs->psw)+sizeof(regs->gprs));
158 save_access_regs(regs->acrs);
159 regs->orig_gpr2 = ptregs->orig_gpr2;
160 return 1;
161}
162
163#define ELF_CORE_COPY_REGS(pr_reg, regs) dump_regs(regs, &pr_reg);
164
165static inline int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
166{
Al Viroc7584fb2006-01-12 01:05:49 -0800[diff] [blame]167 struct pt_regs *ptregs = task_pt_regs(tsk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]168 memcpy(&regs->psw, &ptregs->psw, sizeof(regs->psw)+sizeof(regs->gprs));
169 memcpy(regs->acrs, tsk->thread.acrs, sizeof(regs->acrs));
170 regs->orig_gpr2 = ptregs->orig_gpr2;
171 return 1;
172}
173
174#define ELF_CORE_COPY_TASK_REGS(tsk, regs) dump_task_regs(tsk, regs)
175
176static inline int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs)
177{
178 if (tsk == current)
179 save_fp_regs(fpregs);
180 else
181 memcpy(fpregs, &tsk->thread.fp_regs, sizeof(elf_fpregset_t));
182 return 1;
183}
184
185#define ELF_CORE_COPY_FPREGS(tsk, fpregs) dump_task_fpu(tsk, fpregs)
186
187
188/* This yields a mask that user programs can use to figure out what
189 instruction set this CPU supports. */
190
191#define ELF_HWCAP (0)
192
193/* This yields a string that ld.so will use to load implementation
194 specific libraries for optimization. This is more specific in
195 intent than poking at uname or /proc/cpuinfo.
196
197 For the moment, we have only optimizations for the Intel generations,
198 but that could change... */
199
200#define ELF_PLATFORM (NULL)
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]202#ifndef __s390x__
203#define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
204#else /* __s390x__ */
205#define SET_PERSONALITY(ex, ibcs2) \
206do { \
207 if (ibcs2) \
208 set_personality(PER_SVR4); \
209 else if (current->personality != PER_LINUX32) \
210 set_personality(PER_LINUX); \
211 clear_thread_flag(TIF_31BIT); \
212} while (0)
213#endif /* __s390x__ */
214#endif
215
216#endif