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 * These are used to set parameters in the core dumps. 97 */ 98 #ifndef __s390x__ 99 #define ELF_CLASS ELFCLASS32 100 #else /* __s390x__ */ 101 #define ELF_CLASS ELFCLASS64 102 #endif /* __s390x__ */ 103 #define ELF_DATA ELFDATA2MSB 104 #define ELF_ARCH EM_S390 105 106 /* 107 * ELF register definitions.. 108 */ 109 110 #include <asm/ptrace.h> 111 #include <asm/user.h> 112 113 typedef s390_fp_regs elf_fpregset_t; 114 typedef s390_regs elf_gregset_t; 115 116 typedef s390_fp_regs compat_elf_fpregset_t; 117 typedef s390_compat_regs compat_elf_gregset_t; 118 119 #include <linux/sched.h> /* for task_struct */ 120 #include <asm/system.h> /* for save_access_regs */ 121 #include <asm/mmu_context.h> 122 123 /* 124 * This is used to ensure we don't load something for the wrong architecture. 125 */ 126 #define elf_check_arch(x) \ 127 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \ 128 && (x)->e_ident[EI_CLASS] == ELF_CLASS) 129 #define compat_elf_check_arch(x) \ 130 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \ 131 && (x)->e_ident[EI_CLASS] == ELF_CLASS) 132 #define compat_start_thread start_thread31 133 134 /* For SVR4/S390 the function pointer to be registered with `atexit` is 135 passed in R14. */ 136 #define ELF_PLAT_INIT(_r, load_addr) \ 137 do { \ 138 _r->gprs[14] = 0; \ 139 } while (0) 140 141 #define CORE_DUMP_USE_REGSET 142 #define USE_ELF_CORE_DUMP 143 #define ELF_EXEC_PAGESIZE 4096 144 145 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 146 use of this is to invoke "./ld.so someprog" to test out a new version of 147 the loader. We need to make sure that it is out of the way of the program 148 that it will "exec", and that there is sufficient room for the brk. */ 149 #define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2) 150 151 /* This yields a mask that user programs can use to figure out what 152 instruction set this CPU supports. */ 153 154 extern unsigned long elf_hwcap; 155 #define ELF_HWCAP (elf_hwcap) 156 157 /* This yields a string that ld.so will use to load implementation 158 specific libraries for optimization. This is more specific in 159 intent than poking at uname or /proc/cpuinfo. 160 161 For the moment, we have only optimizations for the Intel generations, 162 but that could change... */ 163 164 #define ELF_PLATFORM_SIZE 8 165 extern char elf_platform[]; 166 #define ELF_PLATFORM (elf_platform) 167 168 #ifndef __s390x__ 169 #define SET_PERSONALITY(ex) set_personality(PER_LINUX) 170 #else /* __s390x__ */ 171 #define SET_PERSONALITY(ex) \ 172 do { \ 173 if (current->personality != PER_LINUX32) \ 174 set_personality(PER_LINUX); \ 175 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ 176 set_thread_flag(TIF_31BIT); \ 177 else \ 178 clear_thread_flag(TIF_31BIT); \ 179 } while (0) 180 #endif /* __s390x__ */ 181 182 /* 183 * An executable for which elf_read_implies_exec() returns TRUE will 184 * have the READ_IMPLIES_EXEC personality flag set automatically. 185 */ 186 #define elf_read_implies_exec(ex, executable_stack) \ 187 ({ \ 188 if (current->mm->context.noexec && \ 189 executable_stack != EXSTACK_DISABLE_X) \ 190 disable_noexec(current->mm, current); \ 191 current->mm->context.noexec == 0; \ 192 }) 193 194 #endif 195