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/* Internal bits, not exposed via elf */ 108#define HWCAP_INT_SIE 1UL 109 110/* 111 * These are used to set parameters in the core dumps. 112 */ 113#define ELF_CLASS ELFCLASS64 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/compat.h> 123#include <asm/syscall.h> 124#include <asm/user.h> 125 126typedef s390_fp_regs elf_fpregset_t; 127typedef s390_regs elf_gregset_t; 128 129typedef s390_fp_regs compat_elf_fpregset_t; 130typedef s390_compat_regs compat_elf_gregset_t; 131 132#include <linux/compat.h> 133#include <linux/sched.h> /* for task_struct */ 134#include <asm/mmu_context.h> 135 136#include <asm/vdso.h> 137 138extern unsigned int vdso_enabled; 139 140/* 141 * This is used to ensure we don't load something for the wrong architecture. 142 */ 143#define 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_elf_check_arch(x) \ 147 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \ 148 && (x)->e_ident[EI_CLASS] == ELF_CLASS) 149#define compat_start_thread start_thread31 150 151/* For SVR4/S390 the function pointer to be registered with `atexit` is 152 passed in R14. */ 153#define ELF_PLAT_INIT(_r, load_addr) \ 154 do { \ 155 _r->gprs[14] = 0; \ 156 } while (0) 157 158#define CORE_DUMP_USE_REGSET 159#define ELF_EXEC_PAGESIZE 4096 160 161/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 162 use of this is to invoke "./ld.so someprog" to test out a new version of 163 the loader. We need to make sure that it is out of the way of the program 164 that it will "exec", and that there is sufficient room for the brk. 64-bit 165 tasks are aligned to 4GB. */ 166#define ELF_ET_DYN_BASE (is_compat_task() ? \ 167 (STACK_TOP / 3 * 2) : \ 168 (STACK_TOP / 3 * 2) & ~((1UL << 32) - 1)) 169 170/* This yields a mask that user programs can use to figure out what 171 instruction set this CPU supports. */ 172 173extern unsigned long elf_hwcap; 174#define ELF_HWCAP (elf_hwcap) 175 176/* Internal hardware capabilities, not exposed via elf */ 177 178extern unsigned long int_hwcap; 179 180/* This yields a string that ld.so will use to load implementation 181 specific libraries for optimization. This is more specific in 182 intent than poking at uname or /proc/cpuinfo. 183 184 For the moment, we have only optimizations for the Intel generations, 185 but that could change... */ 186 187#define ELF_PLATFORM_SIZE 8 188extern char elf_platform[]; 189#define ELF_PLATFORM (elf_platform) 190 191#ifndef CONFIG_COMPAT 192#define SET_PERSONALITY(ex) \ 193do { \ 194 set_personality(PER_LINUX | \ 195 (current->personality & (~PER_MASK))); \ 196 current_thread_info()->sys_call_table = \ 197 (unsigned long) &sys_call_table; \ 198} while (0) 199#else /* CONFIG_COMPAT */ 200#define SET_PERSONALITY(ex) \ 201do { \ 202 if (personality(current->personality) != PER_LINUX32) \ 203 set_personality(PER_LINUX | \ 204 (current->personality & ~PER_MASK)); \ 205 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \ 206 set_thread_flag(TIF_31BIT); \ 207 current_thread_info()->sys_call_table = \ 208 (unsigned long) &sys_call_table_emu; \ 209 } else { \ 210 clear_thread_flag(TIF_31BIT); \ 211 current_thread_info()->sys_call_table = \ 212 (unsigned long) &sys_call_table; \ 213 } \ 214} while (0) 215#endif /* CONFIG_COMPAT */ 216 217/* 218 * Cache aliasing on the latest machines calls for a mapping granularity 219 * of 512KB. For 64-bit processes use a 512KB alignment and a randomization 220 * of up to 1GB. For 31-bit processes the virtual address space is limited, 221 * use no alignment and limit the randomization to 8MB. 222 */ 223#define BRK_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ffffUL) 224#define MMAP_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ff80UL) 225#define MMAP_ALIGN_MASK (is_compat_task() ? 0 : 0x7fUL) 226#define STACK_RND_MASK MMAP_RND_MASK 227 228/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 229#define ARCH_DLINFO \ 230do { \ 231 if (vdso_enabled) \ 232 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 233 (unsigned long)current->mm->context.vdso_base); \ 234} while (0) 235 236struct linux_binprm; 237 238#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 239int arch_setup_additional_pages(struct linux_binprm *, int); 240 241#endif 242