Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm / 497992917edf03994088ec8757b8262e1d9f568a / . / include / asm-s390 / elf.h
blob: 710646e64f7d6e4a062596d0796d0eb7b19c1a6a [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/*
96 * ELF register definitions..
97 */
98
Tim Schmielau8c65b4a2005-11-07 00:59:43 -0800[diff] [blame]99#include <linux/sched.h> /* for task_struct */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]100#include <asm/ptrace.h>
101#include <asm/user.h>
102#include <asm/system.h> /* for save_access_regs */
103
104
105typedef s390_fp_regs elf_fpregset_t;
106typedef s390_regs elf_gregset_t;
107
108/*
109 * These are used to set parameters in the core dumps.
110 */
111#ifndef __s390x__
112#define ELF_CLASS ELFCLASS32
113#else /* __s390x__ */
114#define ELF_CLASS ELFCLASS64
115#endif /* __s390x__ */
116#define ELF_DATA ELFDATA2MSB
117#define ELF_ARCH EM_S390
118
119/*
120 * This is used to ensure we don't load something for the wrong architecture.
121 */
122#define elf_check_arch(x) \
123 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
124 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
125
126/* For SVR4/S390 the function pointer to be registered with `atexit` is
127 passed in R14. */
128#define ELF_PLAT_INIT(_r, load_addr) \
129 do { \
130 _r->gprs[14] = 0; \
131 } while (0)
132
133#define USE_ELF_CORE_DUMP
134#define ELF_EXEC_PAGESIZE 4096
135
136/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
137 use of this is to invoke "./ld.so someprog" to test out a new version of
138 the loader. We need to make sure that it is out of the way of the program
139 that it will "exec", and that there is sufficient room for the brk. */
140
141#ifndef __s390x__
142#define ELF_ET_DYN_BASE ((TASK_SIZE & 0x80000000) \
143 ? TASK_SIZE / 3 * 2 \
144 : 2 * TASK_SIZE / 3)
145#else /* __s390x__ */
146#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
147#endif /* __s390x__ */
148
149/* Wow, the "main" arch needs arch dependent functions too.. :) */
150
151/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
152 now struct_user_regs, they are different) */
153
154static inline int dump_regs(struct pt_regs *ptregs, elf_gregset_t *regs)
155{
156 memcpy(&regs->psw, &ptregs->psw, sizeof(regs->psw)+sizeof(regs->gprs));
157 save_access_regs(regs->acrs);
158 regs->orig_gpr2 = ptregs->orig_gpr2;
159 return 1;
160}
161
162#define ELF_CORE_COPY_REGS(pr_reg, regs) dump_regs(regs, &pr_reg);
163
164static inline int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
165{
Al Viroc7584fb2006-01-12 01:05:49 -0800[diff] [blame]166 struct pt_regs *ptregs = task_pt_regs(tsk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]167 memcpy(&regs->psw, &ptregs->psw, sizeof(regs->psw)+sizeof(regs->gprs));
168 memcpy(regs->acrs, tsk->thread.acrs, sizeof(regs->acrs));
169 regs->orig_gpr2 = ptregs->orig_gpr2;
170 return 1;
171}
172
173#define ELF_CORE_COPY_TASK_REGS(tsk, regs) dump_task_regs(tsk, regs)
174
175static inline int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs)
176{
177 if (tsk == current)
178 save_fp_regs(fpregs);
179 else
180 memcpy(fpregs, &tsk->thread.fp_regs, sizeof(elf_fpregset_t));
181 return 1;
182}
183
184#define ELF_CORE_COPY_FPREGS(tsk, fpregs) dump_task_fpu(tsk, fpregs)
185
186
187/* This yields a mask that user programs can use to figure out what
188 instruction set this CPU supports. */
189
190#define ELF_HWCAP (0)
191
192/* This yields a string that ld.so will use to load implementation
193 specific libraries for optimization. This is more specific in
194 intent than poking at uname or /proc/cpuinfo.
195
196 For the moment, we have only optimizations for the Intel generations,
197 but that could change... */
198
199#define ELF_PLATFORM (NULL)
200
201#ifdef __KERNEL__
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