arch/s390/include/asm/elf.h

   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 #define HWCAP_S390_VXRS         2048
 106
 107 /*
 108  * These are used to set parameters in the core dumps.
 109  */
 110 #define ELF_CLASS       ELFCLASS64
 111 #define ELF_DATA        ELFDATA2MSB
 112 #define ELF_ARCH        EM_S390
 113
 114 /*
 115  * ELF register definitions..
 116  */
 117
 118 #include <asm/ptrace.h>
 119 #include <asm/compat.h>
 120 #include <asm/syscall.h>
 121 #include <asm/user.h>
 122
 123 typedef s390_fp_regs elf_fpregset_t;
 124 typedef s390_regs elf_gregset_t;
 125
 126 typedef s390_fp_regs compat_elf_fpregset_t;
 127 typedef s390_compat_regs compat_elf_gregset_t;
 128
 129 #include <linux/sched.h>        /* for task_struct */
 130 #include <asm/mmu_context.h>
 131
 132 #include <asm/vdso.h>
 133
 134 extern unsigned int vdso_enabled;
 135
 136 /*
 137  * This is used to ensure we don't load something for the wrong architecture.
 138  */
 139 #define elf_check_arch(x) \
 140         (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
 141          && (x)->e_ident[EI_CLASS] == ELF_CLASS)
 142 #define compat_elf_check_arch(x) \
 143         (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
 144          && (x)->e_ident[EI_CLASS] == ELF_CLASS)
 145 #define compat_start_thread     start_thread31
 146
 147 /* For SVR4/S390 the function pointer to be registered with `atexit` is
 148    passed in R14. */
 149 #define ELF_PLAT_INIT(_r, load_addr) \
 150         do { \
 151                 _r->gprs[14] = 0; \
 152         } while (0)
 153
 154 #define CORE_DUMP_USE_REGSET
 155 #define ELF_EXEC_PAGESIZE       4096
 156
 157 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 158    use of this is to invoke "./ld.so someprog" to test out a new version of
 159    the loader.  We need to make sure that it is out of the way of the program
 160    that it will "exec", and that there is sufficient room for the brk. 64-bit
 161    tasks are aligned to 4GB. */
 162 #define ELF_ET_DYN_BASE (is_32bit_task() ? \
 163                                 (STACK_TOP / 3 * 2) : \
 164                                 (STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
 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_COMPAT
 184 #define SET_PERSONALITY(ex) \
 185 do {                                                            \
 186         set_personality(PER_LINUX |                             \
 187                 (current->personality & (~PER_MASK)));          \
 188         current_thread_info()->sys_call_table =                 \
 189                 (unsigned long) &sys_call_table;                \
 190 } while (0)
 191 #else /* CONFIG_COMPAT */
 192 #define SET_PERSONALITY(ex)                                     \
 193 do {                                                            \
 194         if (personality(current->personality) != PER_LINUX32)   \
 195                 set_personality(PER_LINUX |                     \
 196                         (current->personality & ~PER_MASK));    \
 197         if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {             \
 198                 set_thread_flag(TIF_31BIT);                     \
 199                 current_thread_info()->sys_call_table =         \
 200                         (unsigned long) &sys_call_table_emu;    \
 201         } else {                                                \
 202                 clear_thread_flag(TIF_31BIT);                   \
 203                 current_thread_info()->sys_call_table =         \
 204                         (unsigned long) &sys_call_table;        \
 205         }                                                       \
 206 } while (0)
 207 #endif /* CONFIG_COMPAT */
 208
 209 extern unsigned long mmap_rnd_mask;
 210
 211 #define STACK_RND_MASK  (test_thread_flag(TIF_31BIT) ? 0x7ff : mmap_rnd_mask)
 212
 213 #define ARCH_DLINFO                                                         \
 214 do {                                                                        \
 215         if (vdso_enabled)                                                   \
 216                 NEW_AUX_ENT(AT_SYSINFO_EHDR,                                \
 217                             (unsigned long)current->mm->context.vdso_base); \
 218 } while (0)
 219
 220 struct linux_binprm;
 221
 222 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 223 int arch_setup_additional_pages(struct linux_binprm *, int);
 224
 225 void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vxrs);
 226
 227 #endif