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1da177e4 LT |
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 | ||
8c65b4a6 | 99 | #include <linux/sched.h> /* for task_struct */ |
1da177e4 LT |
100 | #include <asm/ptrace.h> |
101 | #include <asm/user.h> | |
102 | #include <asm/system.h> /* for save_access_regs */ | |
103 | ||
104 | ||
105 | typedef s390_fp_regs elf_fpregset_t; | |
106 | typedef 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 | ||
154 | static inline int dump_regs(struct pt_regs *ptregs, elf_gregset_t *regs) | |
155 | { | |
156 | memcpy(®s->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 | ||
164 | static inline int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs) | |
165 | { | |
c7584fb6 | 166 | struct pt_regs *ptregs = task_pt_regs(tsk); |
1da177e4 LT |
167 | memcpy(®s->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 | ||
175 | static 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) \ | |
206 | do { \ | |
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 |