1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_IA64_ELF_H 3 #define _ASM_IA64_ELF_H 4 5 /* 6 * ELF-specific definitions. 7 * 8 * Copyright (C) 1998-1999, 2002-2004 Hewlett-Packard Co 9 * David Mosberger-Tang <davidm@hpl.hp.com> 10 */ 11 12 13 #include <asm/fpu.h> 14 #include <asm/page.h> 15 #include <asm/auxvec.h> 16 17 /* 18 * This is used to ensure we don't load something for the wrong architecture. 19 */ 20 #define elf_check_arch(x) ((x)->e_machine == EM_IA_64) 21 22 /* 23 * These are used to set parameters in the core dumps. 24 */ 25 #define ELF_CLASS ELFCLASS64 26 #define ELF_DATA ELFDATA2LSB 27 #define ELF_ARCH EM_IA_64 28 29 #define CORE_DUMP_USE_REGSET 30 31 /* Least-significant four bits of ELF header's e_flags are OS-specific. The bits are 32 interpreted as follows by Linux: */ 33 #define EF_IA_64_LINUX_EXECUTABLE_STACK 0x1 /* is stack (& heap) executable by default? */ 34 35 #define ELF_EXEC_PAGESIZE PAGE_SIZE 36 37 /* 38 * This is the location that an ET_DYN program is loaded if exec'ed. 39 * Typical use of this is to invoke "./ld.so someprog" to test out a 40 * new version of the loader. We need to make sure that it is out of 41 * the way of the program that it will "exec", and that there is 42 * sufficient room for the brk. 43 */ 44 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x800000000UL) 45 46 #define PT_IA_64_UNWIND 0x70000001 47 48 /* IA-64 relocations: */ 49 #define R_IA64_NONE 0x00 /* none */ 50 #define R_IA64_IMM14 0x21 /* symbol + addend, add imm14 */ 51 #define R_IA64_IMM22 0x22 /* symbol + addend, add imm22 */ 52 #define R_IA64_IMM64 0x23 /* symbol + addend, mov imm64 */ 53 #define R_IA64_DIR32MSB 0x24 /* symbol + addend, data4 MSB */ 54 #define R_IA64_DIR32LSB 0x25 /* symbol + addend, data4 LSB */ 55 #define R_IA64_DIR64MSB 0x26 /* symbol + addend, data8 MSB */ 56 #define R_IA64_DIR64LSB 0x27 /* symbol + addend, data8 LSB */ 57 #define R_IA64_GPREL22 0x2a /* @gprel(sym+add), add imm22 */ 58 #define R_IA64_GPREL64I 0x2b /* @gprel(sym+add), mov imm64 */ 59 #define R_IA64_GPREL32MSB 0x2c /* @gprel(sym+add), data4 MSB */ 60 #define R_IA64_GPREL32LSB 0x2d /* @gprel(sym+add), data4 LSB */ 61 #define R_IA64_GPREL64MSB 0x2e /* @gprel(sym+add), data8 MSB */ 62 #define R_IA64_GPREL64LSB 0x2f /* @gprel(sym+add), data8 LSB */ 63 #define R_IA64_LTOFF22 0x32 /* @ltoff(sym+add), add imm22 */ 64 #define R_IA64_LTOFF64I 0x33 /* @ltoff(sym+add), mov imm64 */ 65 #define R_IA64_PLTOFF22 0x3a /* @pltoff(sym+add), add imm22 */ 66 #define R_IA64_PLTOFF64I 0x3b /* @pltoff(sym+add), mov imm64 */ 67 #define R_IA64_PLTOFF64MSB 0x3e /* @pltoff(sym+add), data8 MSB */ 68 #define R_IA64_PLTOFF64LSB 0x3f /* @pltoff(sym+add), data8 LSB */ 69 #define R_IA64_FPTR64I 0x43 /* @fptr(sym+add), mov imm64 */ 70 #define R_IA64_FPTR32MSB 0x44 /* @fptr(sym+add), data4 MSB */ 71 #define R_IA64_FPTR32LSB 0x45 /* @fptr(sym+add), data4 LSB */ 72 #define R_IA64_FPTR64MSB 0x46 /* @fptr(sym+add), data8 MSB */ 73 #define R_IA64_FPTR64LSB 0x47 /* @fptr(sym+add), data8 LSB */ 74 #define R_IA64_PCREL60B 0x48 /* @pcrel(sym+add), brl */ 75 #define R_IA64_PCREL21B 0x49 /* @pcrel(sym+add), ptb, call */ 76 #define R_IA64_PCREL21M 0x4a /* @pcrel(sym+add), chk.s */ 77 #define R_IA64_PCREL21F 0x4b /* @pcrel(sym+add), fchkf */ 78 #define R_IA64_PCREL32MSB 0x4c /* @pcrel(sym+add), data4 MSB */ 79 #define R_IA64_PCREL32LSB 0x4d /* @pcrel(sym+add), data4 LSB */ 80 #define R_IA64_PCREL64MSB 0x4e /* @pcrel(sym+add), data8 MSB */ 81 #define R_IA64_PCREL64LSB 0x4f /* @pcrel(sym+add), data8 LSB */ 82 #define R_IA64_LTOFF_FPTR22 0x52 /* @ltoff(@fptr(s+a)), imm22 */ 83 #define R_IA64_LTOFF_FPTR64I 0x53 /* @ltoff(@fptr(s+a)), imm64 */ 84 #define R_IA64_LTOFF_FPTR32MSB 0x54 /* @ltoff(@fptr(s+a)), 4 MSB */ 85 #define R_IA64_LTOFF_FPTR32LSB 0x55 /* @ltoff(@fptr(s+a)), 4 LSB */ 86 #define R_IA64_LTOFF_FPTR64MSB 0x56 /* @ltoff(@fptr(s+a)), 8 MSB */ 87 #define R_IA64_LTOFF_FPTR64LSB 0x57 /* @ltoff(@fptr(s+a)), 8 LSB */ 88 #define R_IA64_SEGREL32MSB 0x5c /* @segrel(sym+add), data4 MSB */ 89 #define R_IA64_SEGREL32LSB 0x5d /* @segrel(sym+add), data4 LSB */ 90 #define R_IA64_SEGREL64MSB 0x5e /* @segrel(sym+add), data8 MSB */ 91 #define R_IA64_SEGREL64LSB 0x5f /* @segrel(sym+add), data8 LSB */ 92 #define R_IA64_SECREL32MSB 0x64 /* @secrel(sym+add), data4 MSB */ 93 #define R_IA64_SECREL32LSB 0x65 /* @secrel(sym+add), data4 LSB */ 94 #define R_IA64_SECREL64MSB 0x66 /* @secrel(sym+add), data8 MSB */ 95 #define R_IA64_SECREL64LSB 0x67 /* @secrel(sym+add), data8 LSB */ 96 #define R_IA64_REL32MSB 0x6c /* data 4 + REL */ 97 #define R_IA64_REL32LSB 0x6d /* data 4 + REL */ 98 #define R_IA64_REL64MSB 0x6e /* data 8 + REL */ 99 #define R_IA64_REL64LSB 0x6f /* data 8 + REL */ 100 #define R_IA64_LTV32MSB 0x74 /* symbol + addend, data4 MSB */ 101 #define R_IA64_LTV32LSB 0x75 /* symbol + addend, data4 LSB */ 102 #define R_IA64_LTV64MSB 0x76 /* symbol + addend, data8 MSB */ 103 #define R_IA64_LTV64LSB 0x77 /* symbol + addend, data8 LSB */ 104 #define R_IA64_PCREL21BI 0x79 /* @pcrel(sym+add), ptb, call */ 105 #define R_IA64_PCREL22 0x7a /* @pcrel(sym+add), imm22 */ 106 #define R_IA64_PCREL64I 0x7b /* @pcrel(sym+add), imm64 */ 107 #define R_IA64_IPLTMSB 0x80 /* dynamic reloc, imported PLT, MSB */ 108 #define R_IA64_IPLTLSB 0x81 /* dynamic reloc, imported PLT, LSB */ 109 #define R_IA64_COPY 0x84 /* dynamic reloc, data copy */ 110 #define R_IA64_SUB 0x85 /* -symbol + addend, add imm22 */ 111 #define R_IA64_LTOFF22X 0x86 /* LTOFF22, relaxable. */ 112 #define R_IA64_LDXMOV 0x87 /* Use of LTOFF22X. */ 113 #define R_IA64_TPREL14 0x91 /* @tprel(sym+add), add imm14 */ 114 #define R_IA64_TPREL22 0x92 /* @tprel(sym+add), add imm22 */ 115 #define R_IA64_TPREL64I 0x93 /* @tprel(sym+add), add imm64 */ 116 #define R_IA64_TPREL64MSB 0x96 /* @tprel(sym+add), data8 MSB */ 117 #define R_IA64_TPREL64LSB 0x97 /* @tprel(sym+add), data8 LSB */ 118 #define R_IA64_LTOFF_TPREL22 0x9a /* @ltoff(@tprel(s+a)), add imm22 */ 119 #define R_IA64_DTPMOD64MSB 0xa6 /* @dtpmod(sym+add), data8 MSB */ 120 #define R_IA64_DTPMOD64LSB 0xa7 /* @dtpmod(sym+add), data8 LSB */ 121 #define R_IA64_LTOFF_DTPMOD22 0xaa /* @ltoff(@dtpmod(s+a)), imm22 */ 122 #define R_IA64_DTPREL14 0xb1 /* @dtprel(sym+add), imm14 */ 123 #define R_IA64_DTPREL22 0xb2 /* @dtprel(sym+add), imm22 */ 124 #define R_IA64_DTPREL64I 0xb3 /* @dtprel(sym+add), imm64 */ 125 #define R_IA64_DTPREL32MSB 0xb4 /* @dtprel(sym+add), data4 MSB */ 126 #define R_IA64_DTPREL32LSB 0xb5 /* @dtprel(sym+add), data4 LSB */ 127 #define R_IA64_DTPREL64MSB 0xb6 /* @dtprel(sym+add), data8 MSB */ 128 #define R_IA64_DTPREL64LSB 0xb7 /* @dtprel(sym+add), data8 LSB */ 129 #define R_IA64_LTOFF_DTPREL22 0xba /* @ltoff(@dtprel(s+a)), imm22 */ 130 131 /* IA-64 specific section flags: */ 132 #define SHF_IA_64_SHORT 0x10000000 /* section near gp */ 133 134 /* 135 * We use (abuse?) this macro to insert the (empty) vm_area that is 136 * used to map the register backing store. I don't see any better 137 * place to do this, but we should discuss this with Linus once we can 138 * talk to him... 139 */ 140 extern void ia64_init_addr_space (void); 141 #define ELF_PLAT_INIT(_r, load_addr) ia64_init_addr_space() 142 143 /* ELF register definitions. This is needed for core dump support. */ 144 145 /* 146 * elf_gregset_t contains the application-level state in the following order: 147 * r0-r31 148 * NaT bits (for r0-r31; bit N == 1 iff rN is a NaT) 149 * predicate registers (p0-p63) 150 * b0-b7 151 * ip cfm psr 152 * ar.rsc ar.bsp ar.bspstore ar.rnat 153 * ar.ccv ar.unat ar.fpsr ar.pfs ar.lc ar.ec ar.csd ar.ssd 154 */ 155 #define ELF_NGREG 128 /* we really need just 72 but let's leave some headroom... */ 156 #define ELF_NFPREG 128 /* f0 and f1 could be omitted, but so what... */ 157 158 /* elf_gregset_t register offsets */ 159 #define ELF_GR_0_OFFSET 0 160 #define ELF_NAT_OFFSET (32 * sizeof(elf_greg_t)) 161 #define ELF_PR_OFFSET (33 * sizeof(elf_greg_t)) 162 #define ELF_BR_0_OFFSET (34 * sizeof(elf_greg_t)) 163 #define ELF_CR_IIP_OFFSET (42 * sizeof(elf_greg_t)) 164 #define ELF_CFM_OFFSET (43 * sizeof(elf_greg_t)) 165 #define ELF_CR_IPSR_OFFSET (44 * sizeof(elf_greg_t)) 166 #define ELF_GR_OFFSET(i) (ELF_GR_0_OFFSET + i * sizeof(elf_greg_t)) 167 #define ELF_BR_OFFSET(i) (ELF_BR_0_OFFSET + i * sizeof(elf_greg_t)) 168 #define ELF_AR_RSC_OFFSET (45 * sizeof(elf_greg_t)) 169 #define ELF_AR_BSP_OFFSET (46 * sizeof(elf_greg_t)) 170 #define ELF_AR_BSPSTORE_OFFSET (47 * sizeof(elf_greg_t)) 171 #define ELF_AR_RNAT_OFFSET (48 * sizeof(elf_greg_t)) 172 #define ELF_AR_CCV_OFFSET (49 * sizeof(elf_greg_t)) 173 #define ELF_AR_UNAT_OFFSET (50 * sizeof(elf_greg_t)) 174 #define ELF_AR_FPSR_OFFSET (51 * sizeof(elf_greg_t)) 175 #define ELF_AR_PFS_OFFSET (52 * sizeof(elf_greg_t)) 176 #define ELF_AR_LC_OFFSET (53 * sizeof(elf_greg_t)) 177 #define ELF_AR_EC_OFFSET (54 * sizeof(elf_greg_t)) 178 #define ELF_AR_CSD_OFFSET (55 * sizeof(elf_greg_t)) 179 #define ELF_AR_SSD_OFFSET (56 * sizeof(elf_greg_t)) 180 #define ELF_AR_END_OFFSET (57 * sizeof(elf_greg_t)) 181 182 typedef unsigned long elf_greg_t; 183 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 184 185 typedef struct ia64_fpreg elf_fpreg_t; 186 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 187 188 189 190 struct pt_regs; /* forward declaration... */ 191 extern void ia64_elf_core_copy_regs (struct pt_regs *src, elf_gregset_t dst); 192 #define ELF_CORE_COPY_REGS(_dest,_regs) ia64_elf_core_copy_regs(_regs, _dest); 193 194 /* This macro yields a bitmask that programs can use to figure out 195 what instruction set this CPU supports. */ 196 #define ELF_HWCAP 0 197 198 /* This macro yields a string that ld.so will use to load 199 implementation specific libraries for optimization. Not terribly 200 relevant until we have real hardware to play with... */ 201 #define ELF_PLATFORM NULL 202 203 #define elf_read_implies_exec(ex, executable_stack) \ 204 ((executable_stack!=EXSTACK_DISABLE_X) && ((ex).e_flags & EF_IA_64_LINUX_EXECUTABLE_STACK) != 0) 205 206 struct task_struct; 207 208 #define GATE_EHDR ((const struct elfhdr *) GATE_ADDR) 209 210 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 211 #define ARCH_DLINFO \ 212 do { \ 213 extern char __kernel_syscall_via_epc[]; \ 214 NEW_AUX_ENT(AT_SYSINFO, (unsigned long) __kernel_syscall_via_epc); \ 215 NEW_AUX_ENT(AT_SYSINFO_EHDR, (unsigned long) GATE_EHDR); \ 216 } while (0) 217 218 /* 219 * format for entries in the Global Offset Table 220 */ 221 struct got_entry { 222 uint64_t val; 223 }; 224 225 /* 226 * Layout of the Function Descriptor 227 */ 228 struct fdesc { 229 uint64_t addr; 230 uint64_t gp; 231 }; 232 233 #endif /* _ASM_IA64_ELF_H */ 234