2 * include/asm-s390/elf.h
6 * Derived from "include/asm-i386/elf.h"
9 #ifndef __ASMS390_ELF_H
10 #define __ASMS390_ELF_H
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
53 #define R_390_TLS_LDCALL 39 /* Tag for function call in local
55 #define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
57 #define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
59 #define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
61 #define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
63 #define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
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
77 #define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
79 #define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
81 #define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
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
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
92 /* Keep this the last entry. */
96 * ELF register definitions..
99 #include <linux/sched.h> /* for task_struct */
100 #include <asm/ptrace.h>
101 #include <asm/user.h>
102 #include <asm/system.h> /* for save_access_regs */
105 typedef s390_fp_regs elf_fpregset_t;
106 typedef s390_regs elf_gregset_t;
109 * These are used to set parameters in the core dumps.
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
120 * This is used to ensure we don't load something for the wrong architecture.
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)
126 /* For SVR4/S390 the function pointer to be registered with `atexit` is
128 #define ELF_PLAT_INIT(_r, load_addr) \
133 #define USE_ELF_CORE_DUMP
134 #define ELF_EXEC_PAGESIZE 4096
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. */
142 #define ELF_ET_DYN_BASE ((TASK_SIZE & 0x80000000) \
143 ? TASK_SIZE / 3 * 2 \
145 #else /* __s390x__ */
146 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
147 #endif /* __s390x__ */
149 /* Wow, the "main" arch needs arch dependent functions too.. :) */
151 /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
152 now struct_user_regs, they are different) */
154 static inline int dump_regs(struct pt_regs *ptregs, elf_gregset_t *regs)
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;
162 #define ELF_CORE_COPY_REGS(pr_reg, regs) dump_regs(regs, &pr_reg);
164 static inline int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
166 struct pt_regs *ptregs = task_pt_regs(tsk);
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;
173 #define ELF_CORE_COPY_TASK_REGS(tsk, regs) dump_task_regs(tsk, regs)
175 static inline int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs)
178 save_fp_regs(fpregs);
180 memcpy(fpregs, &tsk->thread.fp_regs, sizeof(elf_fpregset_t));
184 #define ELF_CORE_COPY_FPREGS(tsk, fpregs) dump_task_fpu(tsk, fpregs)
187 /* This yields a mask that user programs can use to figure out what
188 instruction set this CPU supports. */
190 #define ELF_HWCAP (0)
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.
196 For the moment, we have only optimizations for the Intel generations,
197 but that could change... */
199 #define ELF_PLATFORM (NULL)
203 #define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
204 #else /* __s390x__ */
205 #define SET_PERSONALITY(ex, ibcs2) \
208 set_personality(PER_SVR4); \
209 else if (current->personality != PER_LINUX32) \
210 set_personality(PER_LINUX); \
211 clear_thread_flag(TIF_31BIT); \
213 #endif /* __s390x__ */