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 201 54#define R_SH_GOTOFF20 202 55#define R_SH_GOTFUNCDESC 203 56#define R_SH_GOTFUNCDESC20 204 57#define R_SH_GOTOFFFUNCDESC 205 58#define R_SH_GOTOFFFUNCDESC20 206 59#define R_SH_FUNCDESC 207 60#define R_SH_FUNCDESC_VALUE 208 61 62/* SHmedia relocs */ 63#define R_SH_IMM_LOW16 246 64#define R_SH_IMM_LOW16_PCREL 247 65#define R_SH_IMM_MEDLOW16 248 66#define R_SH_IMM_MEDLOW16_PCREL 249 67/* Keep this the last entry. */ 68#define R_SH_NUM 256 69 70/* 71 * ELF register definitions.. 72 */ 73 74typedef unsigned long elf_greg_t; 75 76#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t)) 77typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 78 79typedef struct user_fpu_struct elf_fpregset_t; 80 81/* 82 * These are used to set parameters in the core dumps. 83 */ 84#define ELF_CLASS ELFCLASS32 85#ifdef __LITTLE_ENDIAN__ 86#define ELF_DATA ELFDATA2LSB 87#else 88#define ELF_DATA ELFDATA2MSB 89#endif 90#define ELF_ARCH EM_SH 91 92#ifdef __KERNEL__ 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#ifdef __SH5__ 136#define ELF_PLAT_INIT(_r, load_addr) \ 137 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 138 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 139 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 140 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \ 141 _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \ 142 _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \ 143 _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \ 144 _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \ 145 _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \ 146 _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \ 147 _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \ 148 _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \ 149 _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \ 150 _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \ 151 _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \ 152 _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \ 153 _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \ 154 _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \ 155 _r->sr = SR_FD | SR_MMU; } while (0) 156#else 157#define ELF_PLAT_INIT(_r, load_addr) \ 158 do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \ 159 _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \ 160 _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \ 161 _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \ 162 _r->sr = SR_FD; } while (0) 163 164#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \ 165 _dynamic_addr) \ 166do { \ 167 _r->regs[0] = 0; \ 168 _r->regs[1] = 0; \ 169 _r->regs[2] = 0; \ 170 _r->regs[3] = 0; \ 171 _r->regs[4] = 0; \ 172 _r->regs[5] = 0; \ 173 _r->regs[6] = 0; \ 174 _r->regs[7] = 0; \ 175 _r->regs[8] = _exec_map_addr; \ 176 _r->regs[9] = _interp_map_addr; \ 177 _r->regs[10] = _dynamic_addr; \ 178 _r->regs[11] = 0; \ 179 _r->regs[12] = 0; \ 180 _r->regs[13] = 0; \ 181 _r->regs[14] = 0; \ 182 _r->sr = SR_FD; \ 183} while (0) 184#endif 185 186#define SET_PERSONALITY(ex) \ 187 set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK))) 188 189#ifdef CONFIG_VSYSCALL 190/* vDSO has arch_setup_additional_pages */ 191#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 192struct linux_binprm; 193extern int arch_setup_additional_pages(struct linux_binprm *bprm, 194 int uses_interp); 195 196extern unsigned int vdso_enabled; 197extern void __kernel_vsyscall; 198 199#define VDSO_BASE ((unsigned long)current->mm->context.vdso) 200#define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x)) 201 202#define VSYSCALL_AUX_ENT \ 203 if (vdso_enabled) \ 204 NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \ 205 else \ 206 NEW_AUX_ENT(AT_IGNORE, 0) 207#else 208#define VSYSCALL_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0) 209#endif /* CONFIG_VSYSCALL */ 210 211#ifdef CONFIG_SH_FPU 212#define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT) 213#else 214#define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0) 215#endif 216 217extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; 218 219/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 220#define ARCH_DLINFO \ 221do { \ 222 /* Optional FPU initialization */ \ 223 FPU_AUX_ENT; \ 224 \ 225 /* Optional vsyscall entry */ \ 226 VSYSCALL_AUX_ENT; \ 227 \ 228 /* Cache desc */ \ 229 NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ 230 NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \ 231 NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \ 232} while (0) 233 234#endif /* __KERNEL__ */ 235#endif /* __ASM_SH_ELF_H */ 236