1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_SH_ELF_H 3 #define __ASM_SH_ELF_H 4 5 #include <linux/utsname.h> 6 #include <asm/auxvec.h> 7 #include <asm/ptrace.h> 8 #include <asm/user.h> 9 10 /* ELF header e_flags defines */ 11 #define EF_SH_PIC 0x100 /* -fpic */ 12 #define EF_SH_FDPIC 0x8000 /* -mfdpic */ 13 14 /* SH (particularly SHcompact) relocation types */ 15 #define R_SH_NONE 0 16 #define R_SH_DIR32 1 17 #define R_SH_REL32 2 18 #define R_SH_DIR8WPN 3 19 #define R_SH_IND12W 4 20 #define R_SH_DIR8WPL 5 21 #define R_SH_DIR8WPZ 6 22 #define R_SH_DIR8BP 7 23 #define R_SH_DIR8W 8 24 #define R_SH_DIR8L 9 25 #define R_SH_SWITCH16 25 26 #define R_SH_SWITCH32 26 27 #define R_SH_USES 27 28 #define R_SH_COUNT 28 29 #define R_SH_ALIGN 29 30 #define R_SH_CODE 30 31 #define R_SH_DATA 31 32 #define R_SH_LABEL 32 33 #define R_SH_SWITCH8 33 34 #define R_SH_GNU_VTINHERIT 34 35 #define R_SH_GNU_VTENTRY 35 36 #define R_SH_TLS_GD_32 144 37 #define R_SH_TLS_LD_32 145 38 #define R_SH_TLS_LDO_32 146 39 #define R_SH_TLS_IE_32 147 40 #define R_SH_TLS_LE_32 148 41 #define R_SH_TLS_DTPMOD32 149 42 #define R_SH_TLS_DTPOFF32 150 43 #define R_SH_TLS_TPOFF32 151 44 #define R_SH_GOT32 160 45 #define R_SH_PLT32 161 46 #define R_SH_COPY 162 47 #define R_SH_GLOB_DAT 163 48 #define R_SH_JMP_SLOT 164 49 #define R_SH_RELATIVE 165 50 #define R_SH_GOTOFF 166 51 #define R_SH_GOTPC 167 52 53 /* FDPIC relocs */ 54 #define R_SH_GOT20 201 55 #define R_SH_GOTOFF20 202 56 #define R_SH_GOTFUNCDESC 203 57 #define R_SH_GOTFUNCDESC20 204 58 #define R_SH_GOTOFFFUNCDESC 205 59 #define R_SH_GOTOFFFUNCDESC20 206 60 #define R_SH_FUNCDESC 207 61 #define R_SH_FUNCDESC_VALUE 208 62 63 /* SHmedia relocs */ 64 #define R_SH_IMM_LOW16 246 65 #define R_SH_IMM_LOW16_PCREL 247 66 #define R_SH_IMM_MEDLOW16 248 67 #define R_SH_IMM_MEDLOW16_PCREL 249 68 /* Keep this the last entry. */ 69 #define R_SH_NUM 256 70 71 /* 72 * ELF register definitions.. 73 */ 74 75 typedef unsigned long elf_greg_t; 76 77 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t)) 78 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 79 80 typedef struct user_fpu_struct elf_fpregset_t; 81 82 /* 83 * These are used to set parameters in the core dumps. 84 */ 85 #define ELF_CLASS ELFCLASS32 86 #ifdef __LITTLE_ENDIAN__ 87 #define ELF_DATA ELFDATA2LSB 88 #else 89 #define ELF_DATA ELFDATA2MSB 90 #endif 91 #define ELF_ARCH EM_SH 92 93 #ifdef __KERNEL__ 94 /* 95 * This is used to ensure we don't load something for the wrong architecture. 96 */ 97 #define elf_check_arch(x) ((x)->e_machine == EM_SH) 98 #define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC) 99 #define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC) 100 101 /* 102 * Enable dump using regset. 103 * This covers all of general/DSP/FPU regs. 104 */ 105 #define CORE_DUMP_USE_REGSET 106 107 #define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC 108 #define ELF_EXEC_PAGESIZE PAGE_SIZE 109 110 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 111 use of this is to invoke "./ld.so someprog" to test out a new version of 112 the loader. We need to make sure that it is out of the way of the program 113 that it will "exec", and that there is sufficient room for the brk. */ 114 115 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) 116 117 #define ELF_CORE_COPY_REGS(_dest,_regs) \ 118 memcpy((char *) &_dest, (char *) _regs, \ 119 sizeof(struct pt_regs)); 120 121 /* This yields a mask that user programs can use to figure out what 122 instruction set this CPU supports. This could be done in user space, 123 but it's not easy, and we've already done it here. */ 124 125 #define ELF_HWCAP (boot_cpu_data.flags) 126 127 /* This yields a string that ld.so will use to load implementation 128 specific libraries for optimization. This is more specific in 129 intent than poking at uname or /proc/cpuinfo. 130 131 For the moment, we have only optimizations for the Intel generations, 132 but that could change... */ 133 134 #define ELF_PLATFORM (utsname()->machine) 135 136 #ifdef __SH5__ 137 #define ELF_PLAT_INIT(_r, load_addr) \ 138 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 139 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 140 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 141 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \ 142 _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \ 143 _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \ 144 _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \ 145 _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \ 146 _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \ 147 _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \ 148 _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \ 149 _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \ 150 _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \ 151 _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \ 152 _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \ 153 _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \ 154 _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \ 155 _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \ 156 _r->sr = SR_FD | SR_MMU; } while (0) 157 #else 158 #define ELF_PLAT_INIT(_r, load_addr) \ 159 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 160 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 161 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 162 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \ 163 _r->sr = SR_FD; } while (0) 164 165 #define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \ 166 _dynamic_addr) \ 167 do { \ 168 _r->regs[0] = 0; \ 169 _r->regs[1] = 0; \ 170 _r->regs[2] = 0; \ 171 _r->regs[3] = 0; \ 172 _r->regs[4] = 0; \ 173 _r->regs[5] = 0; \ 174 _r->regs[6] = 0; \ 175 _r->regs[7] = 0; \ 176 _r->regs[8] = _exec_map_addr; \ 177 _r->regs[9] = _interp_map_addr; \ 178 _r->regs[10] = _dynamic_addr; \ 179 _r->regs[11] = 0; \ 180 _r->regs[12] = 0; \ 181 _r->regs[13] = 0; \ 182 _r->regs[14] = 0; \ 183 _r->sr = SR_FD; \ 184 } while (0) 185 #endif 186 187 #define SET_PERSONALITY(ex) \ 188 set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK))) 189 190 #ifdef CONFIG_VSYSCALL 191 /* vDSO has arch_setup_additional_pages */ 192 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 193 struct linux_binprm; 194 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 195 int uses_interp); 196 197 extern unsigned int vdso_enabled; 198 extern void __kernel_vsyscall; 199 200 #define VDSO_BASE ((unsigned long)current->mm->context.vdso) 201 #define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x)) 202 203 #define VSYSCALL_AUX_ENT \ 204 if (vdso_enabled) \ 205 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \ 206 else \ 207 NEW_AUX_ENT(AT_IGNORE, 0) 208 #else 209 #define VSYSCALL_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0) 210 #endif /* CONFIG_VSYSCALL */ 211 212 #ifdef CONFIG_SH_FPU 213 #define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT) 214 #else 215 #define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0) 216 #endif 217 218 extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; 219 220 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 221 #define ARCH_DLINFO \ 222 do { \ 223 /* Optional FPU initialization */ \ 224 FPU_AUX_ENT; \ 225 \ 226 /* Optional vsyscall entry */ \ 227 VSYSCALL_AUX_ENT; \ 228 \ 229 /* Cache desc */ \ 230 NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ 231 NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \ 232 NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \ 233 } while (0) 234 235 #endif /* __KERNEL__ */ 236 #endif /* __ASM_SH_ELF_H */ 237