1 #ifndef __ASM_SH_ELF_H 2 #define __ASM_SH_ELF_H 3 4 #include <linux/utsname.h> 5 #include <asm/auxvec.h> 6 #include <asm/ptrace.h> 7 #include <asm/user.h> 8 9 /* ELF header e_flags defines */ 10 #define EF_SH_PIC 0x100 /* -fpic */ 11 #define EF_SH_FDPIC 0x8000 /* -mfdpic */ 12 13 /* SH (particularly SHcompact) relocation types */ 14 #define R_SH_NONE 0 15 #define R_SH_DIR32 1 16 #define R_SH_REL32 2 17 #define R_SH_DIR8WPN 3 18 #define R_SH_IND12W 4 19 #define R_SH_DIR8WPL 5 20 #define R_SH_DIR8WPZ 6 21 #define R_SH_DIR8BP 7 22 #define R_SH_DIR8W 8 23 #define R_SH_DIR8L 9 24 #define R_SH_SWITCH16 25 25 #define R_SH_SWITCH32 26 26 #define R_SH_USES 27 27 #define R_SH_COUNT 28 28 #define R_SH_ALIGN 29 29 #define R_SH_CODE 30 30 #define R_SH_DATA 31 31 #define R_SH_LABEL 32 32 #define R_SH_SWITCH8 33 33 #define R_SH_GNU_VTINHERIT 34 34 #define R_SH_GNU_VTENTRY 35 35 #define R_SH_TLS_GD_32 144 36 #define R_SH_TLS_LD_32 145 37 #define R_SH_TLS_LDO_32 146 38 #define R_SH_TLS_IE_32 147 39 #define R_SH_TLS_LE_32 148 40 #define R_SH_TLS_DTPMOD32 149 41 #define R_SH_TLS_DTPOFF32 150 42 #define R_SH_TLS_TPOFF32 151 43 #define R_SH_GOT32 160 44 #define R_SH_PLT32 161 45 #define R_SH_COPY 162 46 #define R_SH_GLOB_DAT 163 47 #define R_SH_JMP_SLOT 164 48 #define R_SH_RELATIVE 165 49 #define R_SH_GOTOFF 166 50 #define R_SH_GOTPC 167 51 52 /* FDPIC relocs */ 53 #define R_SH_GOT20 70 54 #define R_SH_GOTOFF20 71 55 #define R_SH_GOTFUNCDESC 72 56 #define R_SH_GOTFUNCDESC20 73 57 #define R_SH_GOTOFFFUNCDESC 74 58 #define R_SH_GOTOFFFUNCDESC20 75 59 #define R_SH_FUNCDESC 76 60 #define R_SH_FUNCDESC_VALUE 77 61 62 #if 0 /* XXX - later .. */ 63 #define R_SH_GOT20 198 64 #define R_SH_GOTOFF20 199 65 #define R_SH_GOTFUNCDESC 200 66 #define R_SH_GOTFUNCDESC20 201 67 #define R_SH_GOTOFFFUNCDESC 202 68 #define R_SH_GOTOFFFUNCDESC20 203 69 #define R_SH_FUNCDESC 204 70 #define R_SH_FUNCDESC_VALUE 205 71 #endif 72 73 /* SHmedia relocs */ 74 #define R_SH_IMM_LOW16 246 75 #define R_SH_IMM_LOW16_PCREL 247 76 #define R_SH_IMM_MEDLOW16 248 77 #define R_SH_IMM_MEDLOW16_PCREL 249 78 /* Keep this the last entry. */ 79 #define R_SH_NUM 256 80 81 /* 82 * ELF register definitions.. 83 */ 84 85 typedef unsigned long elf_greg_t; 86 87 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t)) 88 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 89 90 typedef struct user_fpu_struct elf_fpregset_t; 91 92 /* 93 * These are used to set parameters in the core dumps. 94 */ 95 #define ELF_CLASS ELFCLASS32 96 #ifdef __LITTLE_ENDIAN__ 97 #define ELF_DATA ELFDATA2LSB 98 #else 99 #define ELF_DATA ELFDATA2MSB 100 #endif 101 #define ELF_ARCH EM_SH 102 103 #ifdef __KERNEL__ 104 /* 105 * This is used to ensure we don't load something for the wrong architecture. 106 */ 107 #define elf_check_arch(x) ((x)->e_machine == EM_SH) 108 #define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC) 109 #define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC) 110 111 #ifdef CONFIG_SUPERH32 112 /* 113 * Enable dump using regset. 114 * This covers all of general/DSP/FPU regs. 115 */ 116 #define CORE_DUMP_USE_REGSET 117 #endif 118 119 #define USE_ELF_CORE_DUMP 120 #define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC 121 #define ELF_EXEC_PAGESIZE PAGE_SIZE 122 123 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 124 use of this is to invoke "./ld.so someprog" to test out a new version of 125 the loader. We need to make sure that it is out of the way of the program 126 that it will "exec", and that there is sufficient room for the brk. */ 127 128 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) 129 130 #define ELF_CORE_COPY_REGS(_dest,_regs) \ 131 memcpy((char *) &_dest, (char *) _regs, \ 132 sizeof(struct pt_regs)); 133 134 /* This yields a mask that user programs can use to figure out what 135 instruction set this CPU supports. This could be done in user space, 136 but it's not easy, and we've already done it here. */ 137 138 #define ELF_HWCAP (boot_cpu_data.flags) 139 140 /* This yields a string that ld.so will use to load implementation 141 specific libraries for optimization. This is more specific in 142 intent than poking at uname or /proc/cpuinfo. 143 144 For the moment, we have only optimizations for the Intel generations, 145 but that could change... */ 146 147 #define ELF_PLATFORM (utsname()->machine) 148 149 #ifdef __SH5__ 150 #define ELF_PLAT_INIT(_r, load_addr) \ 151 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 152 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 153 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 154 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \ 155 _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \ 156 _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \ 157 _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \ 158 _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \ 159 _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \ 160 _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \ 161 _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \ 162 _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \ 163 _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \ 164 _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \ 165 _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \ 166 _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \ 167 _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \ 168 _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \ 169 _r->sr = SR_FD | SR_MMU; } while (0) 170 #else 171 #define ELF_PLAT_INIT(_r, load_addr) \ 172 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 173 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 174 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 175 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \ 176 _r->sr = SR_FD; } while (0) 177 178 #define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \ 179 _dynamic_addr) \ 180 do { \ 181 _r->regs[0] = 0; \ 182 _r->regs[1] = 0; \ 183 _r->regs[2] = 0; \ 184 _r->regs[3] = 0; \ 185 _r->regs[4] = 0; \ 186 _r->regs[5] = 0; \ 187 _r->regs[6] = 0; \ 188 _r->regs[7] = 0; \ 189 _r->regs[8] = _exec_map_addr; \ 190 _r->regs[9] = _interp_map_addr; \ 191 _r->regs[10] = _dynamic_addr; \ 192 _r->regs[11] = 0; \ 193 _r->regs[12] = 0; \ 194 _r->regs[13] = 0; \ 195 _r->regs[14] = 0; \ 196 _r->sr = SR_FD; \ 197 } while (0) 198 #endif 199 200 #define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT) 201 202 #ifdef CONFIG_VSYSCALL 203 /* vDSO has arch_setup_additional_pages */ 204 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 205 struct linux_binprm; 206 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 207 int executable_stack); 208 209 extern unsigned int vdso_enabled; 210 extern void __kernel_vsyscall; 211 212 #define VDSO_BASE ((unsigned long)current->mm->context.vdso) 213 #define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x)) 214 215 #define VSYSCALL_AUX_ENT \ 216 if (vdso_enabled) \ 217 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); 218 #else 219 #define VSYSCALL_AUX_ENT 220 #endif /* CONFIG_VSYSCALL */ 221 222 #ifdef CONFIG_SH_FPU 223 #define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT) 224 #else 225 #define FPU_AUX_ENT 226 #endif 227 228 extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; 229 230 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 231 #define ARCH_DLINFO \ 232 do { \ 233 /* Optional FPU initialization */ \ 234 FPU_AUX_ENT; \ 235 \ 236 /* Optional vsyscall entry */ \ 237 VSYSCALL_AUX_ENT; \ 238 \ 239 /* Cache desc */ \ 240 NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ 241 NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \ 242 NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \ 243 } while (0) 244 245 #endif /* __KERNEL__ */ 246 #endif /* __ASM_SH_ELF_H */ 247