1/* 2 * Port on Texas Instruments TMS320C6x architecture 3 * 4 * Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated 5 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11#ifndef _ASM_C6X_ELF_H 12#define _ASM_C6X_ELF_H 13 14/* 15 * ELF register definitions.. 16 */ 17#include <asm/ptrace.h> 18 19typedef unsigned long elf_greg_t; 20typedef unsigned long elf_fpreg_t; 21 22#define ELF_NGREG 58 23#define ELF_NFPREG 1 24 25typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 26typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 27 28/* 29 * This is used to ensure we don't load something for the wrong architecture. 30 */ 31#define elf_check_arch(x) ((x)->e_machine == EM_TI_C6000) 32 33#define elf_check_fdpic(x) (1) 34#define elf_check_const_displacement(x) (0) 35 36#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map, _interp_map, _dynamic_addr) \ 37do { \ 38 _regs->b4 = (_exec_map); \ 39 _regs->a6 = (_interp_map); \ 40 _regs->b6 = (_dynamic_addr); \ 41} while (0) 42 43#define ELF_FDPIC_CORE_EFLAGS 0 44 45#define ELF_CORE_COPY_FPREGS(...) 0 /* No FPU regs to copy */ 46 47/* 48 * These are used to set parameters in the core dumps. 49 */ 50#ifdef __LITTLE_ENDIAN__ 51#define ELF_DATA ELFDATA2LSB 52#else 53#define ELF_DATA ELFDATA2MSB 54#endif 55 56#define ELF_CLASS ELFCLASS32 57#define ELF_ARCH EM_TI_C6000 58 59/* Nothing for now. Need to setup DP... */ 60#define ELF_PLAT_INIT(_r) 61 62#define USE_ELF_CORE_DUMP 63#define ELF_EXEC_PAGESIZE 4096 64 65#define ELF_CORE_COPY_REGS(_dest, _regs) \ 66 memcpy((char *) &_dest, (char *) _regs, \ 67 sizeof(struct pt_regs)); 68 69/* This yields a mask that user programs can use to figure out what 70 instruction set this cpu supports. */ 71 72#define ELF_HWCAP (0) 73 74/* This yields a string that ld.so will use to load implementation 75 specific libraries for optimization. This is more specific in 76 intent than poking at uname or /proc/cpuinfo. */ 77 78#define ELF_PLATFORM (NULL) 79 80/* C6X specific section types */ 81#define SHT_C6000_UNWIND 0x70000001 82#define SHT_C6000_PREEMPTMAP 0x70000002 83#define SHT_C6000_ATTRIBUTES 0x70000003 84 85/* C6X specific DT_ tags */ 86#define DT_C6000_DSBT_BASE 0x70000000 87#define DT_C6000_DSBT_SIZE 0x70000001 88#define DT_C6000_PREEMPTMAP 0x70000002 89#define DT_C6000_DSBT_INDEX 0x70000003 90 91/* C6X specific relocs */ 92#define R_C6000_NONE 0 93#define R_C6000_ABS32 1 94#define R_C6000_ABS16 2 95#define R_C6000_ABS8 3 96#define R_C6000_PCR_S21 4 97#define R_C6000_PCR_S12 5 98#define R_C6000_PCR_S10 6 99#define R_C6000_PCR_S7 7 100#define R_C6000_ABS_S16 8 101#define R_C6000_ABS_L16 9 102#define R_C6000_ABS_H16 10 103#define R_C6000_SBR_U15_B 11 104#define R_C6000_SBR_U15_H 12 105#define R_C6000_SBR_U15_W 13 106#define R_C6000_SBR_S16 14 107#define R_C6000_SBR_L16_B 15 108#define R_C6000_SBR_L16_H 16 109#define R_C6000_SBR_L16_W 17 110#define R_C6000_SBR_H16_B 18 111#define R_C6000_SBR_H16_H 19 112#define R_C6000_SBR_H16_W 20 113#define R_C6000_SBR_GOT_U15_W 21 114#define R_C6000_SBR_GOT_L16_W 22 115#define R_C6000_SBR_GOT_H16_W 23 116#define R_C6000_DSBT_INDEX 24 117#define R_C6000_PREL31 25 118#define R_C6000_COPY 26 119#define R_C6000_ALIGN 253 120#define R_C6000_FPHEAD 254 121#define R_C6000_NOCMP 255 122 123#endif /*_ASM_C6X_ELF_H */ 124