1 /* 2 * ELF definitions for the Hexagon architecture 3 * 4 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 and 8 * only version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA. 19 */ 20 21 #ifndef __ASM_ELF_H 22 #define __ASM_ELF_H 23 24 #include <asm/ptrace.h> 25 #include <asm/user.h> 26 27 /* 28 * This should really be in linux/elf-em.h. 29 */ 30 #define EM_HEXAGON 164 /* QUALCOMM Hexagon */ 31 32 struct elf32_hdr; 33 34 /* 35 * ELF header e_flags defines. 36 */ 37 38 /* should have stuff like "CPU type" and maybe "ABI version", etc */ 39 40 /* Hexagon relocations */ 41 /* V2 */ 42 #define R_HEXAGON_NONE 0 43 #define R_HEXAGON_B22_PCREL 1 44 #define R_HEXAGON_B15_PCREL 2 45 #define R_HEXAGON_B7_PCREL 3 46 #define R_HEXAGON_LO16 4 47 #define R_HEXAGON_HI16 5 48 #define R_HEXAGON_32 6 49 #define R_HEXAGON_16 7 50 #define R_HEXAGON_8 8 51 #define R_HEXAGON_GPREL16_0 9 52 #define R_HEXAGON_GPREL16_1 10 53 #define R_HEXAGON_GPREL16_2 11 54 #define R_HEXAGON_GPREL16_3 12 55 #define R_HEXAGON_HL16 13 56 /* V3 */ 57 #define R_HEXAGON_B13_PCREL 14 58 /* V4 */ 59 #define R_HEXAGON_B9_PCREL 15 60 /* V4 (extenders) */ 61 #define R_HEXAGON_B32_PCREL_X 16 62 #define R_HEXAGON_32_6_X 17 63 /* V4 (extended) */ 64 #define R_HEXAGON_B22_PCREL_X 18 65 #define R_HEXAGON_B15_PCREL_X 19 66 #define R_HEXAGON_B13_PCREL_X 20 67 #define R_HEXAGON_B9_PCREL_X 21 68 #define R_HEXAGON_B7_PCREL_X 22 69 #define R_HEXAGON_16_X 23 70 #define R_HEXAGON_12_X 24 71 #define R_HEXAGON_11_X 25 72 #define R_HEXAGON_10_X 26 73 #define R_HEXAGON_9_X 27 74 #define R_HEXAGON_8_X 28 75 #define R_HEXAGON_7_X 29 76 #define R_HEXAGON_6_X 30 77 /* V2 PIC */ 78 #define R_HEXAGON_32_PCREL 31 79 #define R_HEXAGON_COPY 32 80 #define R_HEXAGON_GLOB_DAT 33 81 #define R_HEXAGON_JMP_SLOT 34 82 #define R_HEXAGON_RELATIVE 35 83 #define R_HEXAGON_PLT_B22_PCREL 36 84 #define R_HEXAGON_GOTOFF_LO16 37 85 #define R_HEXAGON_GOTOFF_HI16 38 86 #define R_HEXAGON_GOTOFF_32 39 87 #define R_HEXAGON_GOT_LO16 40 88 #define R_HEXAGON_GOT_HI16 41 89 #define R_HEXAGON_GOT_32 42 90 #define R_HEXAGON_GOT_16 43 91 92 /* 93 * ELF register definitions.. 94 */ 95 typedef unsigned long elf_greg_t; 96 97 typedef struct user_regs_struct elf_gregset_t; 98 #define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long)) 99 100 /* Placeholder */ 101 typedef unsigned long elf_fpregset_t; 102 103 /* 104 * Bypass the whole "regsets" thing for now and use the define. 105 */ 106 107 #if CONFIG_HEXAGON_ARCH_VERSION >= 4 108 #define CS_COPYREGS(DEST,REGS) \ 109 do {\ 110 DEST.cs0 = REGS->cs0;\ 111 DEST.cs1 = REGS->cs1;\ 112 } while (0) 113 #else 114 #define CS_COPYREGS(DEST,REGS) 115 #endif 116 117 #define ELF_CORE_COPY_REGS(DEST, REGS) \ 118 do { \ 119 DEST.r0 = REGS->r00; \ 120 DEST.r1 = REGS->r01; \ 121 DEST.r2 = REGS->r02; \ 122 DEST.r3 = REGS->r03; \ 123 DEST.r4 = REGS->r04; \ 124 DEST.r5 = REGS->r05; \ 125 DEST.r6 = REGS->r06; \ 126 DEST.r7 = REGS->r07; \ 127 DEST.r8 = REGS->r08; \ 128 DEST.r9 = REGS->r09; \ 129 DEST.r10 = REGS->r10; \ 130 DEST.r11 = REGS->r11; \ 131 DEST.r12 = REGS->r12; \ 132 DEST.r13 = REGS->r13; \ 133 DEST.r14 = REGS->r14; \ 134 DEST.r15 = REGS->r15; \ 135 DEST.r16 = REGS->r16; \ 136 DEST.r17 = REGS->r17; \ 137 DEST.r18 = REGS->r18; \ 138 DEST.r19 = REGS->r19; \ 139 DEST.r20 = REGS->r20; \ 140 DEST.r21 = REGS->r21; \ 141 DEST.r22 = REGS->r22; \ 142 DEST.r23 = REGS->r23; \ 143 DEST.r24 = REGS->r24; \ 144 DEST.r25 = REGS->r25; \ 145 DEST.r26 = REGS->r26; \ 146 DEST.r27 = REGS->r27; \ 147 DEST.r28 = REGS->r28; \ 148 DEST.r29 = pt_psp(REGS); \ 149 DEST.r30 = REGS->r30; \ 150 DEST.r31 = REGS->r31; \ 151 DEST.sa0 = REGS->sa0; \ 152 DEST.lc0 = REGS->lc0; \ 153 DEST.sa1 = REGS->sa1; \ 154 DEST.lc1 = REGS->lc1; \ 155 DEST.m0 = REGS->m0; \ 156 DEST.m1 = REGS->m1; \ 157 DEST.usr = REGS->usr; \ 158 DEST.p3_0 = REGS->preds; \ 159 DEST.gp = REGS->gp; \ 160 DEST.ugp = REGS->ugp; \ 161 CS_COPYREGS(DEST,REGS); \ 162 DEST.pc = pt_elr(REGS); \ 163 DEST.cause = pt_cause(REGS); \ 164 DEST.badva = pt_badva(REGS); \ 165 } while (0); 166 167 /* 168 * This is used to ensure we don't load something for the wrong architecture. 169 * Checks the machine and ABI type. 170 */ 171 #define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON) 172 173 /* 174 * These are used to set parameters in the core dumps. 175 */ 176 #define ELF_CLASS ELFCLASS32 177 #define ELF_DATA ELFDATA2LSB 178 #define ELF_ARCH EM_HEXAGON 179 180 #if CONFIG_HEXAGON_ARCH_VERSION == 2 181 #define ELF_CORE_EFLAGS 0x1 182 #endif 183 184 #if CONFIG_HEXAGON_ARCH_VERSION == 3 185 #define ELF_CORE_EFLAGS 0x2 186 #endif 187 188 #if CONFIG_HEXAGON_ARCH_VERSION == 4 189 #define ELF_CORE_EFLAGS 0x3 190 #endif 191 192 /* 193 * Some architectures have ld.so set up a pointer to a function 194 * to be registered using atexit, to facilitate cleanup. So that 195 * static executables will be well-behaved, we would null the register 196 * in question here, in the pt_regs structure passed. For now, 197 * leave it a null macro. 198 */ 199 #define ELF_PLAT_INIT(regs, load_addr) do { } while (0) 200 201 #define USE_ELF_CORE_DUMP 202 #define CORE_DUMP_USE_REGSET 203 204 /* Hrm is this going to cause problems for changing PAGE_SIZE? */ 205 #define ELF_EXEC_PAGESIZE PAGE_SIZE 206 207 /* 208 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 209 * use of this is to invoke "./ld.so someprog" to test out a new version of 210 * the loader. We need to make sure that it is out of the way of the program 211 * that it will "exec", and that there is sufficient room for the brk. 212 */ 213 #define ELF_ET_DYN_BASE 0x08000000UL 214 215 /* 216 * This yields a mask that user programs can use to figure out what 217 * instruction set this cpu supports. 218 */ 219 #define ELF_HWCAP (0) 220 221 /* 222 * This yields a string that ld.so will use to load implementation 223 * specific libraries for optimization. This is more specific in 224 * intent than poking at uname or /proc/cpuinfo. 225 */ 226 #define ELF_PLATFORM (NULL) 227 228 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 229 struct linux_binprm; 230 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 231 int uses_interp); 232 233 234 #endif 235