1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_ALPHA_ELF_H 3 #define __ASM_ALPHA_ELF_H 4 5 #include <asm/auxvec.h> 6 #include <asm/special_insns.h> 7 8 /* Special values for the st_other field in the symbol table. */ 9 10 #define STO_ALPHA_NOPV 0x80 11 #define STO_ALPHA_STD_GPLOAD 0x88 12 13 /* 14 * Alpha ELF relocation types 15 */ 16 #define R_ALPHA_NONE 0 /* No reloc */ 17 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */ 18 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */ 19 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */ 20 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */ 21 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */ 22 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */ 23 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */ 24 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */ 25 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */ 26 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */ 27 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */ 28 #define R_ALPHA_GPRELHIGH 17 /* GP relative 32 bit, high 16 bits */ 29 #define R_ALPHA_GPRELLOW 18 /* GP relative 32 bit, low 16 bits */ 30 #define R_ALPHA_GPREL16 19 /* GP relative 16 bit */ 31 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */ 32 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */ 33 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */ 34 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */ 35 #define R_ALPHA_BRSGP 28 36 #define R_ALPHA_TLSGD 29 37 #define R_ALPHA_TLS_LDM 30 38 #define R_ALPHA_DTPMOD64 31 39 #define R_ALPHA_GOTDTPREL 32 40 #define R_ALPHA_DTPREL64 33 41 #define R_ALPHA_DTPRELHI 34 42 #define R_ALPHA_DTPRELLO 35 43 #define R_ALPHA_DTPREL16 36 44 #define R_ALPHA_GOTTPREL 37 45 #define R_ALPHA_TPREL64 38 46 #define R_ALPHA_TPRELHI 39 47 #define R_ALPHA_TPRELLO 40 48 #define R_ALPHA_TPREL16 41 49 50 #define SHF_ALPHA_GPREL 0x10000000 51 52 /* Legal values for e_flags field of Elf64_Ehdr. */ 53 54 #define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */ 55 56 /* 57 * ELF register definitions.. 58 */ 59 60 /* 61 * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long. 62 * I have no idea why that is so. For now, we just leave it at 33 63 * (32 general regs + processor status word). 64 */ 65 #define ELF_NGREG 33 66 #define ELF_NFPREG 32 67 68 typedef unsigned long elf_greg_t; 69 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 70 71 typedef double elf_fpreg_t; 72 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 73 74 /* 75 * This is used to ensure we don't load something for the wrong architecture. 76 */ 77 #define elf_check_arch(x) ((x)->e_machine == EM_ALPHA) 78 79 /* 80 * These are used to set parameters in the core dumps. 81 */ 82 #define ELF_CLASS ELFCLASS64 83 #define ELF_DATA ELFDATA2LSB 84 #define ELF_ARCH EM_ALPHA 85 86 #define ELF_EXEC_PAGESIZE 8192 87 88 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 89 use of this is to invoke "./ld.so someprog" to test out a new version of 90 the loader. We need to make sure that it is out of the way of the program 91 that it will "exec", and that there is sufficient room for the brk. */ 92 93 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) 94 95 /* $0 is set by ld.so to a pointer to a function which might be 96 registered using atexit. This provides a mean for the dynamic 97 linker to call DT_FINI functions for shared libraries that have 98 been loaded before the code runs. 99 100 So that we can use the same startup file with static executables, 101 we start programs with a value of 0 to indicate that there is no 102 such function. */ 103 104 #define ELF_PLAT_INIT(_r, load_addr) _r->r0 = 0 105 106 /* The registers are laid out in pt_regs for PAL and syscall 107 convenience. Re-order them for the linear elf_gregset_t. */ 108 109 struct pt_regs; 110 struct thread_info; 111 struct task_struct; 112 extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt, 113 struct thread_info *ti); 114 #define ELF_CORE_COPY_REGS(DEST, REGS) \ 115 dump_elf_thread(DEST, REGS, current_thread_info()); 116 117 /* Similar, but for a thread other than current. */ 118 119 extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task); 120 #define ELF_CORE_COPY_TASK_REGS(TASK, DEST) \ 121 dump_elf_task(*(DEST), TASK) 122 123 /* This yields a mask that user programs can use to figure out what 124 instruction set this CPU supports. This is trivial on Alpha, 125 but not so on other machines. */ 126 127 #define ELF_HWCAP (~amask(-1)) 128 129 /* This yields a string that ld.so will use to load implementation 130 specific libraries for optimization. This is more specific in 131 intent than poking at uname or /proc/cpuinfo. */ 132 133 #define ELF_PLATFORM \ 134 ({ \ 135 enum implver_enum i_ = implver(); \ 136 ( i_ == IMPLVER_EV4 ? "ev4" \ 137 : i_ == IMPLVER_EV5 \ 138 ? (amask(AMASK_BWX) ? "ev5" : "ev56") \ 139 : amask (AMASK_CIX) ? "ev6" : "ev67"); \ 140 }) 141 142 #define SET_PERSONALITY(EX) \ 143 set_personality(((EX).e_flags & EF_ALPHA_32BIT) \ 144 ? PER_LINUX_32BIT : PER_LINUX) 145 146 extern int alpha_l1i_cacheshape; 147 extern int alpha_l1d_cacheshape; 148 extern int alpha_l2_cacheshape; 149 extern int alpha_l3_cacheshape; 150 151 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ 152 #define ARCH_DLINFO \ 153 do { \ 154 NEW_AUX_ENT(AT_L1I_CACHESHAPE, alpha_l1i_cacheshape); \ 155 NEW_AUX_ENT(AT_L1D_CACHESHAPE, alpha_l1d_cacheshape); \ 156 NEW_AUX_ENT(AT_L2_CACHESHAPE, alpha_l2_cacheshape); \ 157 NEW_AUX_ENT(AT_L3_CACHESHAPE, alpha_l3_cacheshape); \ 158 } while (0) 159 160 #endif /* __ASM_ALPHA_ELF_H */ 161