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nios2: ELF definitions 

This patch adds definitions for the ELF format

Signed-off-by: Ley Foon Tan <lftan@altera.com>
hifive-unleashed-5.1
Ley Foon Tan 2014-11-06 15:19:55 +08:00
parent 4fdace8d4f
commit 19f4c6b5af
2 changed files with 168 additions and 0 deletions
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101
arch/nios2/include/asm/elf.h 100644
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/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef _ASM_NIOS2_ELF_H
#define _ASM_NIOS2_ELF_H
#include <uapi/asm/elf.h>
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) ((x)->e_machine == EM_ALTERA_NIOS2)
#define ELF_PLAT_INIT(_r, load_addr)
#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE 4096
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke "./ld.so someprog" to test out a new version of
the loader. We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
#define ELF_ET_DYN_BASE 0xD0000000UL
/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
now struct_user_regs, they are different) */
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
#define ELF_CORE_COPY_REGS(pr_reg, regs) \
{ do { \
/* Bleech. */ \
pr_reg[0] = regs->r8; \
pr_reg[1] = regs->r9; \
pr_reg[2] = regs->r10; \
pr_reg[3] = regs->r11; \
pr_reg[4] = regs->r12; \
pr_reg[5] = regs->r13; \
pr_reg[6] = regs->r14; \
pr_reg[7] = regs->r15; \
pr_reg[8] = regs->r1; \
pr_reg[9] = regs->r2; \
pr_reg[10] = regs->r3; \
pr_reg[11] = regs->r4; \
pr_reg[12] = regs->r5; \
pr_reg[13] = regs->r6; \
pr_reg[14] = regs->r7; \
pr_reg[15] = regs->orig_r2; \
pr_reg[16] = regs->ra; \
pr_reg[17] = regs->fp; \
pr_reg[18] = regs->sp; \
pr_reg[19] = regs->gp; \
pr_reg[20] = regs->estatus; \
pr_reg[21] = regs->ea; \
pr_reg[22] = regs->orig_r7; \
{ \
struct switch_stack *sw = ((struct switch_stack *)regs) - 1; \
pr_reg[23] = sw->r16; \
pr_reg[24] = sw->r17; \
pr_reg[25] = sw->r18; \
pr_reg[26] = sw->r19; \
pr_reg[27] = sw->r20; \
pr_reg[28] = sw->r21; \
pr_reg[29] = sw->r22; \
pr_reg[30] = sw->r23; \
pr_reg[31] = sw->fp; \
pr_reg[32] = sw->gp; \
pr_reg[33] = sw->ra; \
} \
} while (0); }
/* 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)
#endif /* _ASM_NIOS2_ELF_H */

67
arch/nios2/include/uapi/asm/elf.h 100644
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/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef _UAPI_ASM_NIOS2_ELF_H
#define _UAPI_ASM_NIOS2_ELF_H
#include <linux/ptrace.h>
/* Relocation types */
#define R_NIOS2_NONE 0
#define R_NIOS2_S16 1
#define R_NIOS2_U16 2
#define R_NIOS2_PCREL16 3
#define R_NIOS2_CALL26 4
#define R_NIOS2_IMM5 5
#define R_NIOS2_CACHE_OPX 6
#define R_NIOS2_IMM6 7
#define R_NIOS2_IMM8 8
#define R_NIOS2_HI16 9
#define R_NIOS2_LO16 10
#define R_NIOS2_HIADJ16 11
#define R_NIOS2_BFD_RELOC_32 12
#define R_NIOS2_BFD_RELOC_16 13
#define R_NIOS2_BFD_RELOC_8 14
#define R_NIOS2_GPREL 15
#define R_NIOS2_GNU_VTINHERIT 16
#define R_NIOS2_GNU_VTENTRY 17
#define R_NIOS2_UJMP 18
#define R_NIOS2_CJMP 19
#define R_NIOS2_CALLR 20
#define R_NIOS2_ALIGN 21
/* Keep this the last entry. */
#define R_NIOS2_NUM 22
typedef unsigned long elf_greg_t;
#define ELF_NGREG \
((sizeof(struct pt_regs) + sizeof(struct switch_stack)) / \
sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef unsigned long elf_fpregset_t;
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_ALTERA_NIOS2
#endif /* _UAPI_ASM_NIOS2_ELF_H */