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elf.h
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1 /*
2  * 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 
93 /* 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
104 #define HWCAP_S390_TE 1024
105 
106 /*
107  * These are used to set parameters in the core dumps.
108  */
109 #ifndef CONFIG_64BIT
110 #define ELF_CLASS ELFCLASS32
111 #else /* CONFIG_64BIT */
112 #define ELF_CLASS ELFCLASS64
113 #endif /* CONFIG_64BIT */
114 #define ELF_DATA ELFDATA2MSB
115 #define ELF_ARCH EM_S390
116 
117 /*
118  * ELF register definitions..
119  */
120 
121 #include <asm/ptrace.h>
122 #include <asm/user.h>
123 
124 typedef s390_fp_regs elf_fpregset_t;
125 typedef s390_regs elf_gregset_t;
126 
127 typedef s390_fp_regs compat_elf_fpregset_t;
128 typedef s390_compat_regs compat_elf_gregset_t;
129 
130 #include <linux/sched.h> /* for task_struct */
131 #include <asm/mmu_context.h>
132 
133 #include <asm/vdso.h>
134 
135 extern unsigned int vdso_enabled;
136 
137 /*
138  * 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)
143 #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
147 
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 
155 #define CORE_DUMP_USE_REGSET
156 #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. */
162 
163 extern unsigned long randomize_et_dyn(unsigned long base);
164 #define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2))
165 
166 /* This yields a mask that user programs can use to figure out what
167  instruction set this CPU supports. */
168 
169 extern unsigned long elf_hwcap;
170 #define ELF_HWCAP (elf_hwcap)
171 
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 
179 #define ELF_PLATFORM_SIZE 8
180 extern char elf_platform[];
181 #define ELF_PLATFORM (elf_platform)
182 
183 #ifndef CONFIG_64BIT
184 #define SET_PERSONALITY(ex) \
185  set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
186 #else /* CONFIG_64BIT */
187 #define SET_PERSONALITY(ex) \
188 do { \
189  if (personality(current->personality) != PER_LINUX32) \
190  set_personality(PER_LINUX | \
191  (current->personality & ~PER_MASK)); \
192  if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
193  set_thread_flag(TIF_31BIT); \
194  else \
195  clear_thread_flag(TIF_31BIT); \
196 } while (0)
197 #endif /* CONFIG_64BIT */
198 
199 #define STACK_RND_MASK 0x7ffUL
200 
201 #define ARCH_DLINFO \
202 do { \
203  if (vdso_enabled) \
204  NEW_AUX_ENT(AT_SYSINFO_EHDR, \
205  (unsigned long)current->mm->context.vdso_base); \
206 } while (0)
207 
208 struct linux_binprm;
209 
210 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
211 int arch_setup_additional_pages(struct linux_binprm *, int);
212 
213 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
214 #define arch_randomize_brk arch_randomize_brk
215 
216 void *fill_cpu_elf_notes(void *ptr, struct save_area *sa);
217 
218 #endif
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