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/*
* ELF definitions for the Hexagon architecture
*
* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __ASM_ELF_H
#define __ASM_ELF_H
#include <asm/ptrace.h>
#include <asm/user.h>
/*
* This should really be in linux/elf-em.h.
*/
#define EM_HEXAGON 164 /* QUALCOMM Hexagon */
struct elf32_hdr;
/*
* ELF header e_flags defines.
*/
/* should have stuff like "CPU type" and maybe "ABI version", etc */
/* Hexagon relocations */
/* V2 */
#define R_HEXAGON_NONE 0
#define R_HEXAGON_B22_PCREL 1
#define R_HEXAGON_B15_PCREL 2
#define R_HEXAGON_B7_PCREL 3
#define R_HEXAGON_LO16 4
#define R_HEXAGON_HI16 5
#define R_HEXAGON_32 6
#define R_HEXAGON_16 7
#define R_HEXAGON_8 8
#define R_HEXAGON_GPREL16_0 9
#define R_HEXAGON_GPREL16_1 10
#define R_HEXAGON_GPREL16_2 11
#define R_HEXAGON_GPREL16_3 12
#define R_HEXAGON_HL16 13
/* V3 */
#define R_HEXAGON_B13_PCREL 14
/* V4 */
#define R_HEXAGON_B9_PCREL 15
/* V4 (extenders) */
#define R_HEXAGON_B32_PCREL_X 16
#define R_HEXAGON_32_6_X 17
/* V4 (extended) */
#define R_HEXAGON_B22_PCREL_X 18
#define R_HEXAGON_B15_PCREL_X 19
#define R_HEXAGON_B13_PCREL_X 20
#define R_HEXAGON_B9_PCREL_X 21
#define R_HEXAGON_B7_PCREL_X 22
#define R_HEXAGON_16_X 23
#define R_HEXAGON_12_X 24
#define R_HEXAGON_11_X 25
#define R_HEXAGON_10_X 26
#define R_HEXAGON_9_X 27
#define R_HEXAGON_8_X 28
#define R_HEXAGON_7_X 29
#define R_HEXAGON_6_X 30
/* V2 PIC */
#define R_HEXAGON_32_PCREL 31
#define R_HEXAGON_COPY 32
#define R_HEXAGON_GLOB_DAT 33
#define R_HEXAGON_JMP_SLOT 34
#define R_HEXAGON_RELATIVE 35
#define R_HEXAGON_PLT_B22_PCREL 36
#define R_HEXAGON_GOTOFF_LO16 37
#define R_HEXAGON_GOTOFF_HI16 38
#define R_HEXAGON_GOTOFF_32 39
#define R_HEXAGON_GOT_LO16 40
#define R_HEXAGON_GOT_HI16 41
#define R_HEXAGON_GOT_32 42
#define R_HEXAGON_GOT_16 43
/*
* ELF register definitions..
*/
typedef unsigned long elf_greg_t;
typedef struct user_regs_struct elf_gregset_t;
#define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long))
/* Placeholder */
typedef unsigned long elf_fpregset_t;
/*
* Bypass the whole "regsets" thing for now and use the define.
*/
#if CONFIG_HEXAGON_ARCH_VERSION >= 4
#define CS_COPYREGS(DEST,REGS) \
do {\
DEST.cs0 = REGS->cs0;\
DEST.cs1 = REGS->cs1;\
} while (0)
#else
#define CS_COPYREGS(DEST,REGS)
#endif
#define ELF_CORE_COPY_REGS(DEST, REGS) \
do { \
DEST.r0 = REGS->r00; \
DEST.r1 = REGS->r01; \
DEST.r2 = REGS->r02; \
DEST.r3 = REGS->r03; \
DEST.r4 = REGS->r04; \
DEST.r5 = REGS->r05; \
DEST.r6 = REGS->r06; \
DEST.r7 = REGS->r07; \
DEST.r8 = REGS->r08; \
DEST.r9 = REGS->r09; \
DEST.r10 = REGS->r10; \
DEST.r11 = REGS->r11; \
DEST.r12 = REGS->r12; \
DEST.r13 = REGS->r13; \
DEST.r14 = REGS->r14; \
DEST.r15 = REGS->r15; \
DEST.r16 = REGS->r16; \
DEST.r17 = REGS->r17; \
DEST.r18 = REGS->r18; \
DEST.r19 = REGS->r19; \
DEST.r20 = REGS->r20; \
DEST.r21 = REGS->r21; \
DEST.r22 = REGS->r22; \
DEST.r23 = REGS->r23; \
DEST.r24 = REGS->r24; \
DEST.r25 = REGS->r25; \
DEST.r26 = REGS->r26; \
DEST.r27 = REGS->r27; \
DEST.r28 = REGS->r28; \
DEST.r29 = pt_psp(REGS); \
DEST.r30 = REGS->r30; \
DEST.r31 = REGS->r31; \
DEST.sa0 = REGS->sa0; \
DEST.lc0 = REGS->lc0; \
DEST.sa1 = REGS->sa1; \
DEST.lc1 = REGS->lc1; \
DEST.m0 = REGS->m0; \
DEST.m1 = REGS->m1; \
DEST.usr = REGS->usr; \
DEST.p3_0 = REGS->preds; \
DEST.gp = REGS->gp; \
DEST.ugp = REGS->ugp; \
CS_COPYREGS(DEST,REGS); \
DEST.pc = pt_elr(REGS); \
DEST.cause = pt_cause(REGS); \
DEST.badva = pt_badva(REGS); \
} while (0);
/*
* This is used to ensure we don't load something for the wrong architecture.
* Checks the machine and ABI type.
*/
#define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON)
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_HEXAGON
#if CONFIG_HEXAGON_ARCH_VERSION == 2
#define ELF_CORE_EFLAGS 0x1
#endif
#if CONFIG_HEXAGON_ARCH_VERSION == 3
#define ELF_CORE_EFLAGS 0x2
#endif
#if CONFIG_HEXAGON_ARCH_VERSION == 4
#define ELF_CORE_EFLAGS 0x3
#endif
/*
* Some architectures have ld.so set up a pointer to a function
* to be registered using atexit, to facilitate cleanup. So that
* static executables will be well-behaved, we would null the register
* in question here, in the pt_regs structure passed. For now,
* leave it a null macro.
*/
#define ELF_PLAT_INIT(regs, load_addr) do { } while (0)
#define USE_ELF_CORE_DUMP
#define CORE_DUMP_USE_REGSET
/* Hrm is this going to cause problems for changing PAGE_SIZE? */
#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 0x08000000UL
/*
* 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)
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
#endif
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