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| 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 | /* |
| 94 | * This is used to ensure we don't load something for the wrong architecture. |
| 95 | */ |
| 96 | #define elf_check_arch(x) ((x)->e_machine == EM_SH) |
| 97 | #define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC) |
| 98 | #define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC) |
| 99 | |
| 100 | /* |
| 101 | * Enable dump using regset. |
| 102 | * This covers all of general/DSP/FPU regs. |
| 103 | */ |
| 104 | #define CORE_DUMP_USE_REGSET |
| 105 | |
| 106 | #define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC |
| 107 | #define ELF_EXEC_PAGESIZE PAGE_SIZE |
| 108 | |
| 109 | /* This is the location that an ET_DYN program is loaded if exec'ed. Typical |
| 110 | use of this is to invoke "./ld.so someprog" to test out a new version of |
| 111 | the loader. We need to make sure that it is out of the way of the program |
| 112 | that it will "exec", and that there is sufficient room for the brk. */ |
| 113 | |
| 114 | #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) |
| 115 | |
| 116 | #define ELF_CORE_COPY_REGS(_dest,_regs) \ |
| 117 | memcpy((char *) &_dest, (char *) _regs, \ |
| 118 | sizeof(struct pt_regs)); |
| 119 | |
| 120 | /* This yields a mask that user programs can use to figure out what |
| 121 | instruction set this CPU supports. This could be done in user space, |
| 122 | but it's not easy, and we've already done it here. */ |
| 123 | |
| 124 | #define ELF_HWCAP (boot_cpu_data.flags) |
| 125 | |
| 126 | /* This yields a string that ld.so will use to load implementation |
| 127 | specific libraries for optimization. This is more specific in |
| 128 | intent than poking at uname or /proc/cpuinfo. |
| 129 | |
| 130 | For the moment, we have only optimizations for the Intel generations, |
| 131 | but that could change... */ |
| 132 | |
| 133 | #define ELF_PLATFORM (utsname()->machine) |
| 134 | |
| 135 | #define ELF_PLAT_INIT(_r, load_addr) \ |
| 136 | do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ |
| 137 | _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ |
| 138 | _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ |
| 139 | _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \ |
| 140 | _r->sr = SR_FD; } while (0) |
| 141 | |
| 142 | #define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \ |
| 143 | _dynamic_addr) \ |
| 144 | do { \ |
| 145 | _r->regs[0] = 0; \ |
| 146 | _r->regs[1] = 0; \ |
| 147 | _r->regs[2] = 0; \ |
| 148 | _r->regs[3] = 0; \ |
| 149 | _r->regs[4] = 0; \ |
| 150 | _r->regs[5] = 0; \ |
| 151 | _r->regs[6] = 0; \ |
| 152 | _r->regs[7] = 0; \ |
| 153 | _r->regs[8] = _exec_map_addr; \ |
| 154 | _r->regs[9] = _interp_map_addr; \ |
| 155 | _r->regs[10] = _dynamic_addr; \ |
| 156 | _r->regs[11] = 0; \ |
| 157 | _r->regs[12] = 0; \ |
| 158 | _r->regs[13] = 0; \ |
| 159 | _r->regs[14] = 0; \ |
| 160 | _r->sr = SR_FD; \ |
| 161 | } while (0) |
| 162 | |
| 163 | #define SET_PERSONALITY(ex) \ |
| 164 | set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK))) |
| 165 | |
| 166 | #ifdef CONFIG_VSYSCALL |
| 167 | /* vDSO has arch_setup_additional_pages */ |
| 168 | #define ARCH_HAS_SETUP_ADDITIONAL_PAGES |
| 169 | struct linux_binprm; |
| 170 | extern int arch_setup_additional_pages(struct linux_binprm *bprm, |
| 171 | int uses_interp); |
| 172 | |
| 173 | extern unsigned int vdso_enabled; |
| 174 | extern void __kernel_vsyscall; |
| 175 | |
| 176 | #define VDSO_BASE ((unsigned long)current->mm->context.vdso) |
| 177 | #define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x)) |
| 178 | |
| 179 | #define VSYSCALL_AUX_ENT \ |
| 180 | if (vdso_enabled) \ |
| 181 | NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \ |
| 182 | else \ |
| 183 | NEW_AUX_ENT(AT_IGNORE, 0) |
| 184 | #else |
| 185 | #define VSYSCALL_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0) |
| 186 | #endif /* CONFIG_VSYSCALL */ |
| 187 | |
| 188 | #ifdef CONFIG_SH_FPU |
| 189 | #define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT) |
| 190 | #else |
| 191 | #define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0) |
| 192 | #endif |
| 193 | |
| 194 | extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; |
| 195 | |
| 196 | /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ |
| 197 | #define ARCH_DLINFO \ |
| 198 | do { \ |
| 199 | /* Optional FPU initialization */ \ |
| 200 | FPU_AUX_ENT; \ |
| 201 | \ |
| 202 | /* Optional vsyscall entry */ \ |
| 203 | VSYSCALL_AUX_ENT; \ |
| 204 | \ |
| 205 | /* Cache desc */ \ |
| 206 | NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ |
| 207 | NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \ |
| 208 | NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \ |
| 209 | } while (0) |
| 210 | |
| 211 | #endif /* __ASM_SH_ELF_H */ |
| 212 |
Warning: This file is not a C or C++ file. It does not have highlighting.