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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ASMARM_ELF_H
2#define __ASMARM_ELF_H
3
Dan Williamsf393e992007-07-20 02:07:36 +01004#include <asm/hwcap.h>
5
Linus Torvalds1da177e2005-04-16 15:20:36 -07006/*
7 * ELF register definitions..
8 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <asm/ptrace.h>
10#include <asm/user.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
Andrew Mortonea5ce652010-04-27 14:09:12 -070012struct task_struct;
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014typedef unsigned long elf_greg_t;
15typedef unsigned long elf_freg_t[3];
16
Russell King4a5222c2006-11-09 14:07:52 +000017#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;
Russell King4a5222c2006-11-09 14:07:52 +000021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#define EM_ARM 40
Russell King8ec53662008-09-07 17:16:54 +010023
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Paul Gortmakerae51e602009-05-07 16:18:40 +010050#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
Catalin Marinasadca6dc2009-07-24 12:32:59 +010060#define R_ARM_THM_CALL 10
61#define R_ARM_THM_JUMP24 30
62
Linus Torvalds1da177e2005-04-16 15:20:36 -070063/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 * These are used to set parameters in the core dumps.
65 */
66#define ELF_CLASS ELFCLASS32
67#ifdef __ARMEB__
Mike Frysinger718a30a2005-06-03 20:52:26 +010068#define ELF_DATA ELFDATA2MSB
Linus Torvalds1da177e2005-04-16 15:20:36 -070069#else
Mike Frysinger718a30a2005-06-03 20:52:26 +010070#define ELF_DATA ELFDATA2LSB
Linus Torvalds1da177e2005-04-16 15:20:36 -070071#endif
72#define ELF_ARCH EM_ARM
73
Russell King4a5222c2006-11-09 14:07:52 +000074/*
Russell King4a5222c2006-11-09 14:07:52 +000075 * 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[];
Russell King4a5222c2006-11-09 14:07:52 +000091
Russell King8ec53662008-09-07 17:16:54 +010092struct elf32_hdr;
93
David Woodhouse6ff63402006-09-21 08:34:39 +010094/*
95 * This is used to ensure we don't load something for the wrong architecture.
96 */
Russell King8ec53662008-09-07 17:16:54 +010097extern int elf_check_arch(const struct elf32_hdr *);
98#define elf_check_arch elf_check_arch
Russell King4a5222c2006-11-09 14:07:52 +000099
Russell King8ec53662008-09-07 17:16:54 +0100100extern 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)
David Woodhouse6ff63402006-09-21 08:34:39 +0100102
Mikael Petterssonbb355792010-03-11 12:28:31 +0100103struct task_struct;
Artem Bityutskiycde3f862009-10-13 08:54:30 +0100104int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
105#define ELF_CORE_COPY_TASK_REGS dump_task_regs
106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107#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
Russell King8ec53662008-09-07 17:16:54 +0100121extern void elf_set_personality(const struct elf32_hdr *);
Martin Schwidefsky0b592682008-10-16 15:39:57 +0200122#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123
Russell King392c57a2010-07-26 11:02:31 +0100124struct mm_struct;
Nicolas Pitre990cb8a2010-06-14 16:27:19 -0400125extern unsigned long arch_randomize_brk(struct mm_struct *mm);
126#define arch_randomize_brk arch_randomize_brk
127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128#endif