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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * S390 version
3 *
4 * Derived from "include/asm-i386/elf.h"
5 */
6
7#ifndef __ASMS390_ELF_H
8#define __ASMS390_ELF_H
9
10/* s390 relocations defined by the ABIs */
11#define R_390_NONE 0 /* No reloc. */
12#define R_390_8 1 /* Direct 8 bit. */
13#define R_390_12 2 /* Direct 12 bit. */
14#define R_390_16 3 /* Direct 16 bit. */
15#define R_390_32 4 /* Direct 32 bit. */
16#define R_390_PC32 5 /* PC relative 32 bit. */
17#define R_390_GOT12 6 /* 12 bit GOT offset. */
18#define R_390_GOT32 7 /* 32 bit GOT offset. */
19#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
20#define R_390_COPY 9 /* Copy symbol at runtime. */
21#define R_390_GLOB_DAT 10 /* Create GOT entry. */
22#define R_390_JMP_SLOT 11 /* Create PLT entry. */
23#define R_390_RELATIVE 12 /* Adjust by program base. */
24#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
25#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
26#define R_390_GOT16 15 /* 16 bit GOT offset. */
27#define R_390_PC16 16 /* PC relative 16 bit. */
28#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
29#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
30#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
31#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
32#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
33#define R_390_64 22 /* Direct 64 bit. */
34#define R_390_PC64 23 /* PC relative 64 bit. */
35#define R_390_GOT64 24 /* 64 bit GOT offset. */
36#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
37#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
38#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
39#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
40#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
41#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
42#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
43#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
44#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
45#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
46#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
47#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
48#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
49#define R_390_TLS_GDCALL 38 /* Tag for function call in general
50 dynamic TLS code. */
51#define R_390_TLS_LDCALL 39 /* Tag for function call in local
52 dynamic TLS code. */
53#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
54 thread local data. */
55#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
56 thread local data. */
57#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
58 block offset. */
59#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
60 block offset. */
61#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
62 block offset. */
63#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
64 thread local data in LD code. */
65#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
66 thread local data in LD code. */
67#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
68 negated static TLS block offset. */
69#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
70 negated static TLS block offset. */
71#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
72 negated static TLS block offset. */
73#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
74 static TLS block. */
75#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
76 static TLS block. */
77#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
78 block. */
79#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
80 block. */
81#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
82#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
83#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
84 block. */
85#define R_390_20 57 /* Direct 20 bit. */
86#define R_390_GOT20 58 /* 20 bit GOT offset. */
87#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */
88#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS
89 block offset. */
90/* Keep this the last entry. */
91#define R_390_NUM 61
92
Heiko Carstensea2a4d32009-10-06 10:34:13 +020093/* Bits present in AT_HWCAP. */
94#define HWCAP_S390_ESAN3 1
95#define HWCAP_S390_ZARCH 2
96#define HWCAP_S390_STFLE 4
97#define HWCAP_S390_MSA 8
98#define HWCAP_S390_LDISP 16
99#define HWCAP_S390_EIMM 32
100#define HWCAP_S390_DFP 64
101#define HWCAP_S390_HPAGE 128
102#define HWCAP_S390_ETF3EH 256
103#define HWCAP_S390_HIGH_GPRS 512
Martin Schwidefskyd35339a2012-07-31 11:03:04 +0200104#define HWCAP_S390_TE 1024
Heiko Carstensea2a4d32009-10-06 10:34:13 +0200105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 * These are used to set parameters in the core dumps.
108 */
Heiko Carstensf4815ac2012-05-23 16:24:51 +0200109#ifndef CONFIG_64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110#define ELF_CLASS ELFCLASS32
Heiko Carstensf4815ac2012-05-23 16:24:51 +0200111#else /* CONFIG_64BIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112#define ELF_CLASS ELFCLASS64
Heiko Carstensf4815ac2012-05-23 16:24:51 +0200113#endif /* CONFIG_64BIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114#define ELF_DATA ELFDATA2MSB
115#define ELF_ARCH EM_S390
116
117/*
David Woodhouse124b51c2006-09-16 12:15:46 -0700118 * ELF register definitions..
119 */
120
121#include <asm/ptrace.h>
122#include <asm/user.h>
123
124typedef s390_fp_regs elf_fpregset_t;
125typedef s390_regs elf_gregset_t;
126
Martin Schwidefsky63506c42008-07-14 09:58:54 +0200127typedef s390_fp_regs compat_elf_fpregset_t;
128typedef s390_compat_regs compat_elf_gregset_t;
129
David Woodhouse124b51c2006-09-16 12:15:46 -0700130#include <linux/sched.h> /* for task_struct */
Martin Schwidefsky146e4b32008-02-09 18:24:35 +0100131#include <asm/mmu_context.h>
David Woodhouse124b51c2006-09-16 12:15:46 -0700132
Martin Schwidefskyb0206322008-12-25 13:38:36 +0100133#include <asm/vdso.h>
134
135extern unsigned int vdso_enabled;
136
David Woodhouse124b51c2006-09-16 12:15:46 -0700137/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 * This is used to ensure we don't load something for the wrong architecture.
139 */
140#define elf_check_arch(x) \
141 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
142 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
Martin Schwidefsky63506c42008-07-14 09:58:54 +0200143#define compat_elf_check_arch(x) \
144 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
145 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
146#define compat_start_thread start_thread31
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
148/* For SVR4/S390 the function pointer to be registered with `atexit` is
149 passed in R14. */
150#define ELF_PLAT_INIT(_r, load_addr) \
151 do { \
152 _r->gprs[14] = 0; \
153 } while (0)
154
Martin Schwidefsky63506c42008-07-14 09:58:54 +0200155#define CORE_DUMP_USE_REGSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156#define ELF_EXEC_PAGESIZE 4096
157
158/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
159 use of this is to invoke "./ld.so someprog" to test out a new version of
160 the loader. We need to make sure that it is out of the way of the program
161 that it will "exec", and that there is sufficient room for the brk. */
Heiko Carstensd2c9dfc2011-01-12 09:55:31 +0100162
163extern unsigned long randomize_et_dyn(unsigned long base);
164#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166/* This yields a mask that user programs can use to figure out what
167 instruction set this CPU supports. */
168
Martin Schwidefskycf8ba7a2007-05-04 18:48:28 +0200169extern unsigned long elf_hwcap;
170#define ELF_HWCAP (elf_hwcap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
172/* This yields a string that ld.so will use to load implementation
173 specific libraries for optimization. This is more specific in
174 intent than poking at uname or /proc/cpuinfo.
175
176 For the moment, we have only optimizations for the Intel generations,
177 but that could change... */
178
Martin Schwidefskycf8ba7a2007-05-04 18:48:28 +0200179#define ELF_PLATFORM_SIZE 8
180extern char elf_platform[];
181#define ELF_PLATFORM (elf_platform)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Al Viroe72837e2013-02-17 17:47:04 -0500183#ifdef CONFIG_64BIT
Heiko Carstens03e4c492009-01-23 16:40:23 +0100184#define SET_PERSONALITY(ex) \
185do { \
186 if (personality(current->personality) != PER_LINUX32) \
Martin Schwidefskyf9783ec2011-09-26 16:40:33 +0200187 set_personality(PER_LINUX | \
188 (current->personality & ~PER_MASK)); \
Heiko Carstens03e4c492009-01-23 16:40:23 +0100189 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
190 set_thread_flag(TIF_31BIT); \
191 else \
192 clear_thread_flag(TIF_31BIT); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193} while (0)
Heiko Carstensf4815ac2012-05-23 16:24:51 +0200194#endif /* CONFIG_64BIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
Heiko Carstens9046e402011-01-12 09:55:22 +0100196#define STACK_RND_MASK 0x7ffUL
197
Martin Schwidefskyb0206322008-12-25 13:38:36 +0100198#define ARCH_DLINFO \
199do { \
200 if (vdso_enabled) \
201 NEW_AUX_ENT(AT_SYSINFO_EHDR, \
202 (unsigned long)current->mm->context.vdso_base); \
203} while (0)
204
205struct linux_binprm;
206
207#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
208int arch_setup_additional_pages(struct linux_binprm *, int);
209
Heiko Carstens33519182011-01-12 09:55:30 +0100210extern unsigned long arch_randomize_brk(struct mm_struct *mm);
211#define arch_randomize_brk arch_randomize_brk
212
Heiko Carstens6b563d82012-09-14 14:11:32 +0200213void *fill_cpu_elf_notes(void *ptr, struct save_area *sa);
214
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215#endif