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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | /* |
| 3 | * S390 version |
| 4 | * |
| 5 | * Derived from "include/asm-i386/elf.h" |
| 6 | */ |
| 7 | |
| 8 | #ifndef __ASMS390_ELF_H |
| 9 | #define __ASMS390_ELF_H |
| 10 | |
| 11 | /* s390 relocations defined by the ABIs */ |
| 12 | #define R_390_NONE 0 /* No reloc. */ |
| 13 | #define R_390_8 1 /* Direct 8 bit. */ |
| 14 | #define R_390_12 2 /* Direct 12 bit. */ |
| 15 | #define R_390_16 3 /* Direct 16 bit. */ |
| 16 | #define R_390_32 4 /* Direct 32 bit. */ |
| 17 | #define R_390_PC32 5 /* PC relative 32 bit. */ |
| 18 | #define R_390_GOT12 6 /* 12 bit GOT offset. */ |
| 19 | #define R_390_GOT32 7 /* 32 bit GOT offset. */ |
| 20 | #define R_390_PLT32 8 /* 32 bit PC relative PLT address. */ |
| 21 | #define R_390_COPY 9 /* Copy symbol at runtime. */ |
| 22 | #define R_390_GLOB_DAT 10 /* Create GOT entry. */ |
| 23 | #define R_390_JMP_SLOT 11 /* Create PLT entry. */ |
| 24 | #define R_390_RELATIVE 12 /* Adjust by program base. */ |
| 25 | #define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */ |
| 26 | #define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */ |
| 27 | #define R_390_GOT16 15 /* 16 bit GOT offset. */ |
| 28 | #define R_390_PC16 16 /* PC relative 16 bit. */ |
| 29 | #define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */ |
| 30 | #define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */ |
| 31 | #define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */ |
| 32 | #define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */ |
| 33 | #define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */ |
| 34 | #define R_390_64 22 /* Direct 64 bit. */ |
| 35 | #define R_390_PC64 23 /* PC relative 64 bit. */ |
| 36 | #define R_390_GOT64 24 /* 64 bit GOT offset. */ |
| 37 | #define R_390_PLT64 25 /* 64 bit PC relative PLT address. */ |
| 38 | #define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */ |
| 39 | #define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */ |
| 40 | #define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */ |
| 41 | #define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */ |
| 42 | #define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */ |
| 43 | #define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */ |
| 44 | #define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */ |
| 45 | #define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */ |
| 46 | #define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */ |
| 47 | #define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */ |
| 48 | #define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */ |
| 49 | #define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */ |
| 50 | #define R_390_TLS_GDCALL 38 /* Tag for function call in general |
| 51 | dynamic TLS code. */ |
| 52 | #define R_390_TLS_LDCALL 39 /* Tag for function call in local |
| 53 | dynamic TLS code. */ |
| 54 | #define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic |
| 55 | thread local data. */ |
| 56 | #define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic |
| 57 | thread local data. */ |
| 58 | #define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS |
| 59 | block offset. */ |
| 60 | #define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS |
| 61 | block offset. */ |
| 62 | #define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS |
| 63 | block offset. */ |
| 64 | #define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic |
| 65 | thread local data in LD code. */ |
| 66 | #define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic |
| 67 | thread local data in LD code. */ |
| 68 | #define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for |
| 69 | negated static TLS block offset. */ |
| 70 | #define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for |
| 71 | negated static TLS block offset. */ |
| 72 | #define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for |
| 73 | negated static TLS block offset. */ |
| 74 | #define R_390_TLS_LE32 50 /* 32 bit negated offset relative to |
| 75 | static TLS block. */ |
| 76 | #define R_390_TLS_LE64 51 /* 64 bit negated offset relative to |
| 77 | static TLS block. */ |
| 78 | #define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS |
| 79 | block. */ |
| 80 | #define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS |
| 81 | block. */ |
| 82 | #define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */ |
| 83 | #define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */ |
| 84 | #define R_390_TLS_TPOFF 56 /* Negate offset in static TLS |
| 85 | block. */ |
| 86 | #define R_390_20 57 /* Direct 20 bit. */ |
| 87 | #define R_390_GOT20 58 /* 20 bit GOT offset. */ |
| 88 | #define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */ |
| 89 | #define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS |
| 90 | block offset. */ |
| 91 | /* Keep this the last entry. */ |
| 92 | #define R_390_NUM 61 |
| 93 | |
| 94 | /* |
| 95 | * HWCAP flags - for AT_HWCAP |
| 96 | * |
| 97 | * Bits 32-63 are reserved for use by libc. |
| 98 | * Bit 31 is reserved and will be used by libc to determine if a second |
| 99 | * argument is passed to IFUNC resolvers. This will be implemented when |
| 100 | * there is a need for AT_HWCAP2. |
| 101 | */ |
| 102 | enum { |
| 103 | HWCAP_NR_ESAN3 = 0, |
| 104 | HWCAP_NR_ZARCH = 1, |
| 105 | HWCAP_NR_STFLE = 2, |
| 106 | HWCAP_NR_MSA = 3, |
| 107 | HWCAP_NR_LDISP = 4, |
| 108 | HWCAP_NR_EIMM = 5, |
| 109 | HWCAP_NR_DFP = 6, |
| 110 | HWCAP_NR_HPAGE = 7, |
| 111 | HWCAP_NR_ETF3EH = 8, |
| 112 | HWCAP_NR_HIGH_GPRS = 9, |
| 113 | HWCAP_NR_TE = 10, |
| 114 | HWCAP_NR_VXRS = 11, |
| 115 | HWCAP_NR_VXRS_BCD = 12, |
| 116 | HWCAP_NR_VXRS_EXT = 13, |
| 117 | HWCAP_NR_GS = 14, |
| 118 | HWCAP_NR_VXRS_EXT2 = 15, |
| 119 | HWCAP_NR_VXRS_PDE = 16, |
| 120 | HWCAP_NR_SORT = 17, |
| 121 | HWCAP_NR_DFLT = 18, |
| 122 | HWCAP_NR_VXRS_PDE2 = 19, |
| 123 | HWCAP_NR_NNPA = 20, |
| 124 | HWCAP_NR_PCI_MIO = 21, |
| 125 | HWCAP_NR_SIE = 22, |
| 126 | HWCAP_NR_MAX |
| 127 | }; |
| 128 | |
| 129 | /* Bits present in AT_HWCAP. */ |
| 130 | #define HWCAP_ESAN3 BIT(HWCAP_NR_ESAN3) |
| 131 | #define HWCAP_ZARCH BIT(HWCAP_NR_ZARCH) |
| 132 | #define HWCAP_STFLE BIT(HWCAP_NR_STFLE) |
| 133 | #define HWCAP_MSA BIT(HWCAP_NR_MSA) |
| 134 | #define HWCAP_LDISP BIT(HWCAP_NR_LDISP) |
| 135 | #define HWCAP_EIMM BIT(HWCAP_NR_EIMM) |
| 136 | #define HWCAP_DFP BIT(HWCAP_NR_DFP) |
| 137 | #define HWCAP_HPAGE BIT(HWCAP_NR_HPAGE) |
| 138 | #define HWCAP_ETF3EH BIT(HWCAP_NR_ETF3EH) |
| 139 | #define HWCAP_HIGH_GPRS BIT(HWCAP_NR_HIGH_GPRS) |
| 140 | #define HWCAP_TE BIT(HWCAP_NR_TE) |
| 141 | #define HWCAP_VXRS BIT(HWCAP_NR_VXRS) |
| 142 | #define HWCAP_VXRS_BCD BIT(HWCAP_NR_VXRS_BCD) |
| 143 | #define HWCAP_VXRS_EXT BIT(HWCAP_NR_VXRS_EXT) |
| 144 | #define HWCAP_GS BIT(HWCAP_NR_GS) |
| 145 | #define HWCAP_VXRS_EXT2 BIT(HWCAP_NR_VXRS_EXT2) |
| 146 | #define HWCAP_VXRS_PDE BIT(HWCAP_NR_VXRS_PDE) |
| 147 | #define HWCAP_SORT BIT(HWCAP_NR_SORT) |
| 148 | #define HWCAP_DFLT BIT(HWCAP_NR_DFLT) |
| 149 | #define HWCAP_VXRS_PDE2 BIT(HWCAP_NR_VXRS_PDE2) |
| 150 | #define HWCAP_NNPA BIT(HWCAP_NR_NNPA) |
| 151 | #define HWCAP_PCI_MIO BIT(HWCAP_NR_PCI_MIO) |
| 152 | #define HWCAP_SIE BIT(HWCAP_NR_SIE) |
| 153 | |
| 154 | /* |
| 155 | * These are used to set parameters in the core dumps. |
| 156 | */ |
| 157 | #define ELF_CLASS ELFCLASS64 |
| 158 | #define ELF_DATA ELFDATA2MSB |
| 159 | #define ELF_ARCH EM_S390 |
| 160 | |
| 161 | /* |
| 162 | * ELF register definitions.. |
| 163 | */ |
| 164 | |
| 165 | #include <asm/ptrace.h> |
| 166 | #include <asm/syscall.h> |
| 167 | #include <asm/user.h> |
| 168 | |
| 169 | typedef s390_fp_regs elf_fpregset_t; |
| 170 | typedef s390_regs elf_gregset_t; |
| 171 | |
| 172 | #include <linux/sched/mm.h> /* for task_struct */ |
| 173 | #include <asm/mmu_context.h> |
| 174 | |
| 175 | /* |
| 176 | * This is used to ensure we don't load something for the wrong architecture. |
| 177 | */ |
| 178 | #define elf_check_arch(x) \ |
| 179 | (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \ |
| 180 | && (x)->e_ident[EI_CLASS] == ELF_CLASS) |
| 181 | |
| 182 | /* For SVR4/S390 the function pointer to be registered with `atexit` is |
| 183 | passed in R14. */ |
| 184 | #define ELF_PLAT_INIT(_r, load_addr) \ |
| 185 | do { \ |
| 186 | _r->gprs[14] = 0; \ |
| 187 | } while (0) |
| 188 | |
| 189 | #define CORE_DUMP_USE_REGSET |
| 190 | #define ELF_EXEC_PAGESIZE PAGE_SIZE |
| 191 | |
| 192 | /* This is the location that an ET_DYN program is loaded if exec'ed. Typical |
| 193 | use of this is to invoke "./ld.so someprog" to test out a new version of |
| 194 | the loader. We need to make sure that it is out of the way of the program |
| 195 | that it will "exec", and that there is sufficient room for the brk. 64-bit |
| 196 | tasks are aligned to 4GB. */ |
| 197 | #define ELF_ET_DYN_BASE ((STACK_TOP / 3 * 2) & ~((1UL << 32) - 1)) |
| 198 | |
| 199 | /* This yields a mask that user programs can use to figure out what |
| 200 | instruction set this CPU supports. */ |
| 201 | |
| 202 | extern unsigned long elf_hwcap; |
| 203 | #define ELF_HWCAP (elf_hwcap) |
| 204 | |
| 205 | /* This yields a string that ld.so will use to load implementation |
| 206 | specific libraries for optimization. This is more specific in |
| 207 | intent than poking at uname or /proc/cpuinfo. |
| 208 | |
| 209 | For the moment, we have only optimizations for the Intel generations, |
| 210 | but that could change... */ |
| 211 | |
| 212 | #define ELF_PLATFORM_SIZE 8 |
| 213 | extern char elf_platform[]; |
| 214 | #define ELF_PLATFORM (elf_platform) |
| 215 | |
| 216 | #define SET_PERSONALITY(ex) \ |
| 217 | do { \ |
| 218 | set_personality(PER_LINUX | \ |
| 219 | (current->personality & (~PER_MASK))); \ |
| 220 | } while (0) |
| 221 | |
| 222 | /* |
| 223 | * Cache aliasing on the latest machines calls for a mapping granularity |
| 224 | * of 512KB for the anonymous mapping base. Use a 512KB alignment and a |
| 225 | * randomization of up to 1GB. |
| 226 | * For the additional randomization of the program break use 32MB. |
| 227 | */ |
| 228 | #define BRK_RND_MASK (0x1fffUL) |
| 229 | #define MMAP_RND_MASK (0x3ff80UL) |
| 230 | #define MMAP_ALIGN_MASK (0x7fUL) |
| 231 | #define STACK_RND_MASK MMAP_RND_MASK |
| 232 | |
| 233 | /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ |
| 234 | #define ARCH_DLINFO \ |
| 235 | do { \ |
| 236 | NEW_AUX_ENT(AT_SYSINFO_EHDR, \ |
| 237 | (unsigned long)current->mm->context.vdso_base); \ |
| 238 | } while (0) |
| 239 | |
| 240 | struct linux_binprm; |
| 241 | |
| 242 | #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 |
| 243 | int arch_setup_additional_pages(struct linux_binprm *, int); |
| 244 | |
| 245 | #endif |
| 246 |
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