1. 根目录:
2. arch
3. arm
4. include
5. asm
6. elf.h

#ifndef __ASMARM_ELF_H
#define __ASMARM_ELF_H

#include <asm/hwcap.h>

/*
 * ELF register definitions..
 */
#include <asm/ptrace.h>
#include <asm/user.h>

struct task_struct;

typedef unsigned long elf_greg_t;
typedef unsigned long elf_freg_t[3];

#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef struct user_fp elf_fpregset_t;

#define EF_ARM_EABI_MASK	0xff000000
#define EF_ARM_EABI_UNKNOWN	0x00000000
#define EF_ARM_EABI_VER1	0x01000000
#define EF_ARM_EABI_VER2	0x02000000
#define EF_ARM_EABI_VER3	0x03000000
#define EF_ARM_EABI_VER4	0x04000000
#define EF_ARM_EABI_VER5	0x05000000

#define EF_ARM_BE8		0x00800000	/* ABI 4,5 */
#define EF_ARM_LE8		0x00400000	/* ABI 4,5 */
#define EF_ARM_MAVERICK_FLOAT	0x00000800	/* ABI 0 */
#define EF_ARM_VFP_FLOAT	0x00000400	/* ABI 0 */
#define EF_ARM_SOFT_FLOAT	0x00000200	/* ABI 0 */
#define EF_ARM_OLD_ABI		0x00000100	/* ABI 0 */
#define EF_ARM_NEW_ABI		0x00000080	/* ABI 0 */
#define EF_ARM_ALIGN8		0x00000040	/* ABI 0 */
#define EF_ARM_PIC		0x00000020	/* ABI 0 */
#define EF_ARM_MAPSYMSFIRST	0x00000010	/* ABI 2 */
#define EF_ARM_APCS_FLOAT	0x00000010	/* ABI 0, floats in fp regs */
#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008	/* ABI 2 */
#define EF_ARM_APCS_26		0x00000008	/* ABI 0 */
#define EF_ARM_SYMSARESORTED	0x00000004	/* ABI 1,2 */
#define EF_ARM_INTERWORK	0x00000004	/* ABI 0 */
#define EF_ARM_HASENTRY		0x00000002	/* All */
#define EF_ARM_RELEXEC		0x00000001	/* All */

#define R_ARM_NONE		0
#define R_ARM_PC24		1
#define R_ARM_ABS32		2
#define R_ARM_CALL		28
#define R_ARM_JUMP24		29
#define R_ARM_V4BX		40
#define R_ARM_PREL31		42
#define R_ARM_MOVW_ABS_NC	43
#define R_ARM_MOVT_ABS		44

#define R_ARM_THM_CALL		10
#define R_ARM_THM_JUMP24	30
#define R_ARM_THM_MOVW_ABS_NC	47
#define R_ARM_THM_MOVT_ABS	48

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32
#ifdef __ARMEB__
#define ELF_DATA	ELFDATA2MSB
#else
#define ELF_DATA	ELFDATA2LSB
#endif
#define ELF_ARCH	EM_ARM

/*
 * 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.
 *
 * For now we just provide a fairly general string that describes the
 * processor family.  This could be made more specific later if someone
 * implemented optimisations that require it.  26-bit CPUs give you
 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
 * supported).  32-bit CPUs give you "v3[lb]" for anything based on an
 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
 * core.
 */
#define ELF_PLATFORM_SIZE 8
#define ELF_PLATFORM	(elf_platform)

extern char elf_platform[];

struct elf32_hdr;

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
extern int elf_check_arch(const struct elf32_hdr *);
#define elf_check_arch elf_check_arch

#define vmcore_elf64_check_arch(x) (0)

extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)

struct task_struct;
int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
#define ELF_CORE_COPY_TASK_REGS dump_task_regs

#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	(2 * TASK_SIZE / 3)

/* When the program starts, a1 contains a pointer to a function to be 
   registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
   have no such handler.  */
#define ELF_PLAT_INIT(_r, load_addr)	(_r)->ARM_r0 = 0

extern void elf_set_personality(const struct elf32_hdr *);
#define SET_PERSONALITY(ex)	elf_set_personality(&(ex))

struct mm_struct;
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk

#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;
int arch_setup_additional_pages(struct linux_binprm *, int);

#endif