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 #define USE_ELF_CORE_DUMP 112 #define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC 113 #define ELF_EXEC_PAGESIZE PAGE_SIZE 114 115 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 116 use of this is to invoke "./ld.so someprog" to test out a new version of 117 the loader. We need to make sure that it is out of the way of the program 118 that it will "exec", and that there is sufficient room for the brk. */ 119 120 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) 121 122 #define ELF_CORE_COPY_REGS(_dest,_regs) \ 123 memcpy((char *) &_dest, (char *) _regs, \ 124 sizeof(struct pt_regs)); 125 126 /* This yields a mask that user programs can use to figure out what 127 instruction set this CPU supports. This could be done in user space, 128 but it's not easy, and we've already done it here. */ 129 130 #define ELF_HWCAP (boot_cpu_data.flags) 131 132 /* This yields a string that ld.so will use to load implementation 133 specific libraries for optimization. This is more specific in 134 intent than poking at uname or /proc/cpuinfo. 135 136 For the moment, we have only optimizations for the Intel generations, 137 but that could change... */ 138 139 #define ELF_PLATFORM (utsname()->machine) 140 141 #ifdef __SH5__ 142 #define ELF_PLAT_INIT(_r, load_addr) \ 143 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 144 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 145 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 146 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \ 147 _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \ 148 _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \ 149 _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \ 150 _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \ 151 _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \ 152 _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \ 153 _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \ 154 _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \ 155 _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \ 156 _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \ 157 _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \ 158 _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \ 159 _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \ 160 _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \ 161 _r->sr = SR_FD | SR_MMU; } while (0) 162 #else 163 #define ELF_PLAT_INIT(_r, load_addr) \ 164 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 165 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 166 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 167 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \ 168 _r->sr = SR_FD; } while (0) 169 170 #define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \ 171 _dynamic_addr) \ 172 do { \ 173 _r->regs[0] = 0; \ 174 _r->regs[1] = 0; \ 175 _r->regs[2] = 0; \ 176 _r->regs[3] = 0; \ 177 _r->regs[4] = 0; \ 178 _r->regs[5] = 0; \ 179 _r->regs[6] = 0; \ 180 _r->regs[7] = 0; \ 181 _r->regs[8] = _exec_map_addr; \ 182 _r->regs[9] = _interp_map_addr; \ 183 _r->regs[10] = _dynamic_addr; \ 184 _r->regs[11] = 0; \ 185 _r->regs[12] = 0; \ 186 _r->regs[13] = 0; \ 187 _r->regs[14] = 0; \ 188 _r->sr = SR_FD; \ 189 } while (0) 190 #endif 191 192 #define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX_32BIT) 193 struct task_struct; 194 extern int dump_task_regs (struct task_struct *, elf_gregset_t *); 195 extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *); 196 197 #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs) 198 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs) 199 200 #ifdef CONFIG_VSYSCALL 201 /* vDSO has arch_setup_additional_pages */ 202 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 203 struct linux_binprm; 204 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 205 int executable_stack); 206 207 extern unsigned int vdso_enabled; 208 extern void __kernel_vsyscall; 209 210 #define VDSO_BASE ((unsigned long)current->mm->context.vdso) 211 #define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x)) 212 213 #define VSYSCALL_AUX_ENT \ 214 if (vdso_enabled) \ 215 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); 216 #else 217 #define VSYSCALL_AUX_ENT 218 #endif /* CONFIG_VSYSCALL */ 219 220 #ifdef CONFIG_SH_FPU 221 #define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT) 222 #else 223 #define FPU_AUX_ENT 224 #endif 225 226 extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; 227 228 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 229 #define ARCH_DLINFO \ 230 do { \ 231 /* Optional FPU initialization */ \ 232 FPU_AUX_ENT; \ 233 \ 234 /* Optional vsyscall entry */ \ 235 VSYSCALL_AUX_ENT; \ 236 \ 237 /* Cache desc */ \ 238 NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ 239 NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \ 240 NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \ 241 } while (0) 242 243 #endif /* __KERNEL__ */ 244 #endif /* __ASM_SH_ELF_H */ 245