/arch/arm/include/asm/elf.h

  1#ifndef __ASMARM_ELF_H
  2#define __ASMARM_ELF_H
  3
  4#include <asm/hwcap.h>
  5
  6/*
  7 * ELF register definitions..
  8 */
  9#include <asm/ptrace.h>
 10#include <asm/user.h>
 11
 12struct task_struct;
 13
 14typedef unsigned long elf_greg_t;
 15typedef unsigned long elf_freg_t[3];
 16
 17#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
 18typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 19
 20typedef struct user_fp elf_fpregset_t;
 21
 22#define EM_ARM	40
 23
 24#define EF_ARM_EABI_MASK	0xff000000
 25#define EF_ARM_EABI_UNKNOWN	0x00000000
 26#define EF_ARM_EABI_VER1	0x01000000
 27#define EF_ARM_EABI_VER2	0x02000000
 28#define EF_ARM_EABI_VER3	0x03000000
 29#define EF_ARM_EABI_VER4	0x04000000
 30#define EF_ARM_EABI_VER5	0x05000000
 31
 32#define EF_ARM_BE8		0x00800000	/* ABI 4,5 */
 33#define EF_ARM_LE8		0x00400000	/* ABI 4,5 */
 34#define EF_ARM_MAVERICK_FLOAT	0x00000800	/* ABI 0 */
 35#define EF_ARM_VFP_FLOAT	0x00000400	/* ABI 0 */
 36#define EF_ARM_SOFT_FLOAT	0x00000200	/* ABI 0 */
 37#define EF_ARM_OLD_ABI		0x00000100	/* ABI 0 */
 38#define EF_ARM_NEW_ABI		0x00000080	/* ABI 0 */
 39#define EF_ARM_ALIGN8		0x00000040	/* ABI 0 */
 40#define EF_ARM_PIC		0x00000020	/* ABI 0 */
 41#define EF_ARM_MAPSYMSFIRST	0x00000010	/* ABI 2 */
 42#define EF_ARM_APCS_FLOAT	0x00000010	/* ABI 0, floats in fp regs */
 43#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008	/* ABI 2 */
 44#define EF_ARM_APCS_26		0x00000008	/* ABI 0 */
 45#define EF_ARM_SYMSARESORTED	0x00000004	/* ABI 1,2 */
 46#define EF_ARM_INTERWORK	0x00000004	/* ABI 0 */
 47#define EF_ARM_HASENTRY		0x00000002	/* All */
 48#define EF_ARM_RELEXEC		0x00000001	/* All */
 49
 50#define R_ARM_NONE		0
 51#define R_ARM_PC24		1
 52#define R_ARM_ABS32		2
 53#define R_ARM_CALL		28
 54#define R_ARM_JUMP24		29
 55#define R_ARM_V4BX		40
 56#define R_ARM_PREL31		42
 57#define R_ARM_MOVW_ABS_NC	43
 58#define R_ARM_MOVT_ABS		44
 59
 60#define R_ARM_THM_CALL		10
 61#define R_ARM_THM_JUMP24	30
 62
 63/*
 64 * These are used to set parameters in the core dumps.
 65 */
 66#define ELF_CLASS	ELFCLASS32
 67#ifdef __ARMEB__
 68#define ELF_DATA	ELFDATA2MSB
 69#else
 70#define ELF_DATA	ELFDATA2LSB
 71#endif
 72#define ELF_ARCH	EM_ARM
 73
 74/*
 75 * This yields a string that ld.so will use to load implementation
 76 * specific libraries for optimization.  This is more specific in
 77 * intent than poking at uname or /proc/cpuinfo.
 78 *
 79 * For now we just provide a fairly general string that describes the
 80 * processor family.  This could be made more specific later if someone
 81 * implemented optimisations that require it.  26-bit CPUs give you
 82 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
 83 * supported).  32-bit CPUs give you "v3[lb]" for anything based on an
 84 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
 85 * core.
 86 */
 87#define ELF_PLATFORM_SIZE 8
 88#define ELF_PLATFORM	(elf_platform)
 89
 90extern char elf_platform[];
 91
 92struct elf32_hdr;
 93
 94/*
 95 * This is used to ensure we don't load something for the wrong architecture.
 96 */
 97extern int elf_check_arch(const struct elf32_hdr *);
 98#define elf_check_arch elf_check_arch
 99
100extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
101#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
102
103struct task_struct;
104int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
105#define ELF_CORE_COPY_TASK_REGS dump_task_regs
106
107#define ELF_EXEC_PAGESIZE	4096
108
109/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
110   use of this is to invoke "./ld.so someprog" to test out a new version of
111   the loader.  We need to make sure that it is out of the way of the program
112   that it will "exec", and that there is sufficient room for the brk.  */
113
114#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)
115
116/* When the program starts, a1 contains a pointer to a function to be 
117   registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
118   have no such handler.  */
119#define ELF_PLAT_INIT(_r, load_addr)	(_r)->ARM_r0 = 0
120
121extern void elf_set_personality(const struct elf32_hdr *);
122#define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
123
124#endif