1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Port on Texas Instruments TMS320C6x architecture 4 * 5 * Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated 6 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) 7 */ 8 #ifndef _ASM_C6X_ELF_H 9 #define _ASM_C6X_ELF_H 10 11 /* 12 * ELF register definitions.. 13 */ 14 #include <asm/ptrace.h> 15 16 typedef unsigned long elf_greg_t; 17 typedef unsigned long elf_fpreg_t; 18 19 #define ELF_NGREG 58 20 #define ELF_NFPREG 1 21 22 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 23 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 24 25 /* 26 * This is used to ensure we don't load something for the wrong architecture. 27 */ 28 #define elf_check_arch(x) ((x)->e_machine == EM_TI_C6000) 29 30 #define elf_check_fdpic(x) (1) 31 #define elf_check_const_displacement(x) (0) 32 33 #define ELF_FDPIC_PLAT_INIT(_regs, _exec_map, _interp_map, _dynamic_addr) \ 34 do { \ 35 _regs->b4 = (_exec_map); \ 36 _regs->a6 = (_interp_map); \ 37 _regs->b6 = (_dynamic_addr); \ 38 } while (0) 39 40 #define ELF_FDPIC_CORE_EFLAGS 0 41 42 #define ELF_CORE_COPY_FPREGS(...) 0 /* No FPU regs to copy */ 43 44 /* 45 * These are used to set parameters in the core dumps. 46 */ 47 #ifdef __LITTLE_ENDIAN__ 48 #define ELF_DATA ELFDATA2LSB 49 #else 50 #define ELF_DATA ELFDATA2MSB 51 #endif 52 53 #define ELF_CLASS ELFCLASS32 54 #define ELF_ARCH EM_TI_C6000 55 56 /* Nothing for now. Need to setup DP... */ 57 #define ELF_PLAT_INIT(_r) 58 59 #define USE_ELF_CORE_DUMP 60 #define ELF_EXEC_PAGESIZE 4096 61 62 #define ELF_CORE_COPY_REGS(_dest, _regs) \ 63 memcpy((char *) &_dest, (char *) _regs, \ 64 sizeof(struct pt_regs)); 65 66 /* This yields a mask that user programs can use to figure out what 67 instruction set this cpu supports. */ 68 69 #define ELF_HWCAP (0) 70 71 /* This yields a string that ld.so will use to load implementation 72 specific libraries for optimization. This is more specific in 73 intent than poking at uname or /proc/cpuinfo. */ 74 75 #define ELF_PLATFORM (NULL) 76 77 /* C6X specific section types */ 78 #define SHT_C6000_UNWIND 0x70000001 79 #define SHT_C6000_PREEMPTMAP 0x70000002 80 #define SHT_C6000_ATTRIBUTES 0x70000003 81 82 /* C6X specific DT_ tags */ 83 #define DT_C6000_DSBT_BASE 0x70000000 84 #define DT_C6000_DSBT_SIZE 0x70000001 85 #define DT_C6000_PREEMPTMAP 0x70000002 86 #define DT_C6000_DSBT_INDEX 0x70000003 87 88 /* C6X specific relocs */ 89 #define R_C6000_NONE 0 90 #define R_C6000_ABS32 1 91 #define R_C6000_ABS16 2 92 #define R_C6000_ABS8 3 93 #define R_C6000_PCR_S21 4 94 #define R_C6000_PCR_S12 5 95 #define R_C6000_PCR_S10 6 96 #define R_C6000_PCR_S7 7 97 #define R_C6000_ABS_S16 8 98 #define R_C6000_ABS_L16 9 99 #define R_C6000_ABS_H16 10 100 #define R_C6000_SBR_U15_B 11 101 #define R_C6000_SBR_U15_H 12 102 #define R_C6000_SBR_U15_W 13 103 #define R_C6000_SBR_S16 14 104 #define R_C6000_SBR_L16_B 15 105 #define R_C6000_SBR_L16_H 16 106 #define R_C6000_SBR_L16_W 17 107 #define R_C6000_SBR_H16_B 18 108 #define R_C6000_SBR_H16_H 19 109 #define R_C6000_SBR_H16_W 20 110 #define R_C6000_SBR_GOT_U15_W 21 111 #define R_C6000_SBR_GOT_L16_W 22 112 #define R_C6000_SBR_GOT_H16_W 23 113 #define R_C6000_DSBT_INDEX 24 114 #define R_C6000_PREL31 25 115 #define R_C6000_COPY 26 116 #define R_C6000_ALIGN 253 117 #define R_C6000_FPHEAD 254 118 #define R_C6000_NOCMP 255 119 120 #endif /*_ASM_C6X_ELF_H */ 121