1 #ifndef __ASM_ALPHA_ELF_H 2 #define __ASM_ALPHA_ELF_H 3 4 #include <asm/auxvec.h> 5 #include <asm/special_insns.h> 6 7 /* Special values for the st_other field in the symbol table. */ 8 9 #define STO_ALPHA_NOPV 0x80 10 #define STO_ALPHA_STD_GPLOAD 0x88 11 12 /* 13 * Alpha ELF relocation types 14 */ 15 #define R_ALPHA_NONE 0 /* No reloc */ 16 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */ 17 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */ 18 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */ 19 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */ 20 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */ 21 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */ 22 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */ 23 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */ 24 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */ 25 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */ 26 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */ 27 #define R_ALPHA_GPRELHIGH 17 /* GP relative 32 bit, high 16 bits */ 28 #define R_ALPHA_GPRELLOW 18 /* GP relative 32 bit, low 16 bits */ 29 #define R_ALPHA_GPREL16 19 /* GP relative 16 bit */ 30 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */ 31 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */ 32 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */ 33 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */ 34 #define R_ALPHA_BRSGP 28 35 #define R_ALPHA_TLSGD 29 36 #define R_ALPHA_TLS_LDM 30 37 #define R_ALPHA_DTPMOD64 31 38 #define R_ALPHA_GOTDTPREL 32 39 #define R_ALPHA_DTPREL64 33 40 #define R_ALPHA_DTPRELHI 34 41 #define R_ALPHA_DTPRELLO 35 42 #define R_ALPHA_DTPREL16 36 43 #define R_ALPHA_GOTTPREL 37 44 #define R_ALPHA_TPREL64 38 45 #define R_ALPHA_TPRELHI 39 46 #define R_ALPHA_TPRELLO 40 47 #define R_ALPHA_TPREL16 41 48 49 #define SHF_ALPHA_GPREL 0x10000000 50 51 /* Legal values for e_flags field of Elf64_Ehdr. */ 52 53 #define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */ 54 55 /* 56 * ELF register definitions.. 57 */ 58 59 /* 60 * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long. 61 * I have no idea why that is so. For now, we just leave it at 33 62 * (32 general regs + processor status word). 63 */ 64 #define ELF_NGREG 33 65 #define ELF_NFPREG 32 66 67 typedef unsigned long elf_greg_t; 68 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 69 70 typedef double elf_fpreg_t; 71 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 72 73 /* 74 * This is used to ensure we don't load something for the wrong architecture. 75 */ 76 #define elf_check_arch(x) ((x)->e_machine == EM_ALPHA) 77 78 /* 79 * These are used to set parameters in the core dumps. 80 */ 81 #define ELF_CLASS ELFCLASS64 82 #define ELF_DATA ELFDATA2LSB 83 #define ELF_ARCH EM_ALPHA 84 85 #define ELF_EXEC_PAGESIZE 8192 86 87 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 88 use of this is to invoke "./ld.so someprog" to test out a new version of 89 the loader. We need to make sure that it is out of the way of the program 90 that it will "exec", and that there is sufficient room for the brk. */ 91 92 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) 93 94 /* $0 is set by ld.so to a pointer to a function which might be 95 registered using atexit. This provides a mean for the dynamic 96 linker to call DT_FINI functions for shared libraries that have 97 been loaded before the code runs. 98 99 So that we can use the same startup file with static executables, 100 we start programs with a value of 0 to indicate that there is no 101 such function. */ 102 103 #define ELF_PLAT_INIT(_r, load_addr) _r->r0 = 0 104 105 /* The registers are laid out in pt_regs for PAL and syscall 106 convenience. Re-order them for the linear elf_gregset_t. */ 107 108 struct pt_regs; 109 struct thread_info; 110 struct task_struct; 111 extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt, 112 struct thread_info *ti); 113 #define ELF_CORE_COPY_REGS(DEST, REGS) \ 114 dump_elf_thread(DEST, REGS, current_thread_info()); 115 116 /* Similar, but for a thread other than current. */ 117 118 extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task); 119 #define ELF_CORE_COPY_TASK_REGS(TASK, DEST) \ 120 dump_elf_task(*(DEST), TASK) 121 122 /* Similar, but for the FP registers. */ 123 124 extern int dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task); 125 #define ELF_CORE_COPY_FPREGS(TASK, DEST) \ 126 dump_elf_task_fp(*(DEST), TASK) 127 128 /* This yields a mask that user programs can use to figure out what 129 instruction set this CPU supports. This is trivial on Alpha, 130 but not so on other machines. */ 131 132 #define ELF_HWCAP (~amask(-1)) 133 134 /* This yields a string that ld.so will use to load implementation 135 specific libraries for optimization. This is more specific in 136 intent than poking at uname or /proc/cpuinfo. */ 137 138 #define ELF_PLATFORM \ 139 ({ \ 140 enum implver_enum i_ = implver(); \ 141 ( i_ == IMPLVER_EV4 ? "ev4" \ 142 : i_ == IMPLVER_EV5 \ 143 ? (amask(AMASK_BWX) ? "ev5" : "ev56") \ 144 : amask (AMASK_CIX) ? "ev6" : "ev67"); \ 145 }) 146 147 #define SET_PERSONALITY(EX) \ 148 set_personality(((EX).e_flags & EF_ALPHA_32BIT) \ 149 ? PER_LINUX_32BIT : PER_LINUX) 150 151 extern int alpha_l1i_cacheshape; 152 extern int alpha_l1d_cacheshape; 153 extern int alpha_l2_cacheshape; 154 extern int alpha_l3_cacheshape; 155 156 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 157 #define ARCH_DLINFO \ 158 do { \ 159 NEW_AUX_ENT(AT_L1I_CACHESHAPE, alpha_l1i_cacheshape); \ 160 NEW_AUX_ENT(AT_L1D_CACHESHAPE, alpha_l1d_cacheshape); \ 161 NEW_AUX_ENT(AT_L2_CACHESHAPE, alpha_l2_cacheshape); \ 162 NEW_AUX_ENT(AT_L3_CACHESHAPE, alpha_l3_cacheshape); \ 163 } while (0) 164 165 #endif /* __ASM_ALPHA_ELF_H */ 166