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| 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 | #define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \ |
| 64 | do { \ |
| 65 | (_r)->d3 = _exec_map_addr; \ |
| 66 | (_r)->d4 = _interp_map_addr; \ |
| 67 | (_r)->d5 = dynamic_addr; \ |
| 68 | } while(0) |
| 69 | |
| 70 | #if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE) |
| 71 | #define ELF_EXEC_PAGESIZE 8192 |
| 72 | #else |
| 73 | #define ELF_EXEC_PAGESIZE 4096 |
| 74 | #endif |
| 75 | |
| 76 | /* This is the location that an ET_DYN program is loaded if exec'ed. Typical |
| 77 | use of this is to invoke "./ld.so someprog" to test out a new version of |
| 78 | the loader. We need to make sure that it is out of the way of the program |
| 79 | that it will "exec", and that there is sufficient room for the brk. */ |
| 80 | |
| 81 | #ifndef CONFIG_SUN3 |
| 82 | #define ELF_ET_DYN_BASE 0xD0000000UL |
| 83 | #else |
| 84 | #define ELF_ET_DYN_BASE 0x0D800000UL |
| 85 | #endif |
| 86 | |
| 87 | #define ELF_CORE_COPY_REGS(pr_reg, regs) \ |
| 88 | /* Bleech. */ \ |
| 89 | pr_reg[0] = regs->d1; \ |
| 90 | pr_reg[1] = regs->d2; \ |
| 91 | pr_reg[2] = regs->d3; \ |
| 92 | pr_reg[3] = regs->d4; \ |
| 93 | pr_reg[4] = regs->d5; \ |
| 94 | pr_reg[7] = regs->a0; \ |
| 95 | pr_reg[8] = regs->a1; \ |
| 96 | pr_reg[9] = regs->a2; \ |
| 97 | pr_reg[14] = regs->d0; \ |
| 98 | pr_reg[15] = rdusp(); \ |
| 99 | pr_reg[16] = regs->orig_d0; \ |
| 100 | pr_reg[17] = regs->sr; \ |
| 101 | pr_reg[18] = regs->pc; \ |
| 102 | pr_reg[19] = (regs->format << 12) | regs->vector; \ |
| 103 | { \ |
| 104 | struct switch_stack *sw = ((struct switch_stack *)regs) - 1; \ |
| 105 | pr_reg[5] = sw->d6; \ |
| 106 | pr_reg[6] = sw->d7; \ |
| 107 | pr_reg[10] = sw->a3; \ |
| 108 | pr_reg[11] = sw->a4; \ |
| 109 | pr_reg[12] = sw->a5; \ |
| 110 | pr_reg[13] = sw->a6; \ |
| 111 | } |
| 112 | |
| 113 | /* This yields a mask that user programs can use to figure out what |
| 114 | instruction set this cpu supports. */ |
| 115 | |
| 116 | #define ELF_HWCAP (0) |
| 117 | |
| 118 | /* This yields a string that ld.so will use to load implementation |
| 119 | specific libraries for optimization. This is more specific in |
| 120 | intent than poking at uname or /proc/cpuinfo. */ |
| 121 | |
| 122 | #define ELF_PLATFORM (NULL) |
| 123 | |
| 124 | #define ELF_FDPIC_CORE_EFLAGS 0 |
| 125 | |
| 126 | #endif |
| 127 |
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