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* Port on Texas Instruments TMS320C6x architecture
*
* Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated
* Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_C6X_ELF_H
#define _ASM_C6X_ELF_H
/*
* ELF register definitions..
*/
#include <asm/ptrace.h>
typedef unsigned long elf_greg_t;
typedef unsigned long elf_fpreg_t;
#define ELF_NGREG 58
#define ELF_NFPREG 1
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) ((x)->e_machine == EM_TI_C6000)
#define elf_check_fdpic(x) (1)
#define elf_check_const_displacement(x) (0)
#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map, _interp_map, _dynamic_addr) \
do { \
_regs->b4 = (_exec_map); \
_regs->a6 = (_interp_map); \
_regs->b6 = (_dynamic_addr); \
} while (0)
#define ELF_FDPIC_CORE_EFLAGS 0
#define ELF_CORE_COPY_FPREGS(...) 0 /* No FPU regs to copy */
/*
* These are used to set parameters in the core dumps.
*/
#ifdef __LITTLE_ENDIAN__
#define ELF_DATA ELFDATA2LSB
#else
#define ELF_DATA ELFDATA2MSB
#endif
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_TI_C6000
/* Nothing for now. Need to setup DP... */
#define ELF_PLAT_INIT(_r)
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#define ELF_CORE_COPY_REGS(_dest, _regs) \
memcpy((char *) &_dest, (char *) _regs, \
sizeof(struct pt_regs));
/* This yields a mask that user programs can use to figure out what
instruction set this cpu supports. */
#define ELF_HWCAP (0)
/* This yields a string that ld.so will use to load implementation
specific libraries for optimization. This is more specific in
intent than poking at uname or /proc/cpuinfo. */
#define ELF_PLATFORM (NULL)
/* C6X specific section types */
#define SHT_C6000_UNWIND 0x70000001
#define SHT_C6000_PREEMPTMAP 0x70000002
#define SHT_C6000_ATTRIBUTES 0x70000003
/* C6X specific DT_ tags */
#define DT_C6000_DSBT_BASE 0x70000000
#define DT_C6000_DSBT_SIZE 0x70000001
#define DT_C6000_PREEMPTMAP 0x70000002
#define DT_C6000_DSBT_INDEX 0x70000003
/* C6X specific relocs */
#define R_C6000_NONE 0
#define R_C6000_ABS32 1
#define R_C6000_ABS16 2
#define R_C6000_ABS8 3
#define R_C6000_PCR_S21 4
#define R_C6000_PCR_S12 5
#define R_C6000_PCR_S10 6
#define R_C6000_PCR_S7 7
#define R_C6000_ABS_S16 8
#define R_C6000_ABS_L16 9
#define R_C6000_ABS_H16 10
#define R_C6000_SBR_U15_B 11
#define R_C6000_SBR_U15_H 12
#define R_C6000_SBR_U15_W 13
#define R_C6000_SBR_S16 14
#define R_C6000_SBR_L16_B 15
#define R_C6000_SBR_L16_H 16
#define R_C6000_SBR_L16_W 17
#define R_C6000_SBR_H16_B 18
#define R_C6000_SBR_H16_H 19
#define R_C6000_SBR_H16_W 20
#define R_C6000_SBR_GOT_U15_W 21
#define R_C6000_SBR_GOT_L16_W 22
#define R_C6000_SBR_GOT_H16_W 23
#define R_C6000_DSBT_INDEX 24
#define R_C6000_PREL31 25
#define R_C6000_COPY 26
#define R_C6000_ALIGN 253
#define R_C6000_FPHEAD 254
#define R_C6000_NOCMP 255
#endif /*_ASM_C6X_ELF_H */
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