1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASMm68k_ELF_H 3 #define __ASMm68k_ELF_H 4 5 /* 6 * ELF register definitions.. 7 */ 8 9 #include <asm/ptrace.h> 10 #include <asm/user.h> 11 12 /* 13 * 68k ELF relocation types 14 */ 15 #define R_68K_NONE 0 16 #define R_68K_32 1 17 #define R_68K_16 2 18 #define R_68K_8 3 19 #define R_68K_PC32 4 20 #define R_68K_PC16 5 21 #define R_68K_PC8 6 22 #define R_68K_GOT32 7 23 #define R_68K_GOT16 8 24 #define R_68K_GOT8 9 25 #define R_68K_GOT32O 10 26 #define R_68K_GOT16O 11 27 #define R_68K_GOT8O 12 28 #define R_68K_PLT32 13 29 #define R_68K_PLT16 14 30 #define R_68K_PLT8 15 31 #define R_68K_PLT32O 16 32 #define R_68K_PLT16O 17 33 #define R_68K_PLT8O 18 34 #define R_68K_COPY 19 35 #define R_68K_GLOB_DAT 20 36 #define R_68K_JMP_SLOT 21 37 #define R_68K_RELATIVE 22 38 39 typedef unsigned long elf_greg_t; 40 41 #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t)) 42 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 43 44 typedef struct user_m68kfp_struct elf_fpregset_t; 45 46 /* 47 * This is used to ensure we don't load something for the wrong architecture. 48 */ 49 #define elf_check_arch(x) ((x)->e_machine == EM_68K) 50 51 /* 52 * These are used to set parameters in the core dumps. 53 */ 54 #define ELF_CLASS ELFCLASS32 55 #define ELF_DATA ELFDATA2MSB 56 #define ELF_ARCH EM_68K 57 58 /* For SVR4/m68k the function pointer to be registered with `atexit' is 59 passed in %a1. Although my copy of the ABI has no such statement, it 60 is actually used on ASV. */ 61 #define ELF_PLAT_INIT(_r, load_addr) _r->a1 = 0 62 63 #if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE) 64 #define ELF_EXEC_PAGESIZE 8192 65 #else 66 #define ELF_EXEC_PAGESIZE 4096 67 #endif 68 69 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical 70 use of this is to invoke "./ld.so someprog" to test out a new version of 71 the loader. We need to make sure that it is out of the way of the program 72 that it will "exec", and that there is sufficient room for the brk. */ 73 74 #ifndef CONFIG_SUN3 75 #define ELF_ET_DYN_BASE 0xD0000000UL 76 #else 77 #define ELF_ET_DYN_BASE 0x0D800000UL 78 #endif 79 80 #define ELF_CORE_COPY_REGS(pr_reg, regs) \ 81 /* Bleech. */ \ 82 pr_reg[0] = regs->d1; \ 83 pr_reg[1] = regs->d2; \ 84 pr_reg[2] = regs->d3; \ 85 pr_reg[3] = regs->d4; \ 86 pr_reg[4] = regs->d5; \ 87 pr_reg[7] = regs->a0; \ 88 pr_reg[8] = regs->a1; \ 89 pr_reg[9] = regs->a2; \ 90 pr_reg[14] = regs->d0; \ 91 pr_reg[15] = rdusp(); \ 92 pr_reg[16] = regs->orig_d0; \ 93 pr_reg[17] = regs->sr; \ 94 pr_reg[18] = regs->pc; \ 95 pr_reg[19] = (regs->format << 12) | regs->vector; \ 96 { \ 97 struct switch_stack *sw = ((struct switch_stack *)regs) - 1; \ 98 pr_reg[5] = sw->d6; \ 99 pr_reg[6] = sw->d7; \ 100 pr_reg[10] = sw->a3; \ 101 pr_reg[11] = sw->a4; \ 102 pr_reg[12] = sw->a5; \ 103 pr_reg[13] = sw->a6; \ 104 } 105 106 /* This yields a mask that user programs can use to figure out what 107 instruction set this cpu supports. */ 108 109 #define ELF_HWCAP (0) 110 111 /* This yields a string that ld.so will use to load implementation 112 specific libraries for optimization. This is more specific in 113 intent than poking at uname or /proc/cpuinfo. */ 114 115 #define ELF_PLATFORM (NULL) 116 117 #endif 118