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 16typedef unsigned long elf_greg_t; 17typedef unsigned long elf_fpreg_t; 18 19#define ELF_NGREG 58 20#define ELF_NFPREG 1 21 22typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 23typedef 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) \ 34do { \ 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