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1 #ifndef __ASMARM_ELF_H
2 #define __ASMARM_ELF_H
3 
4 #include <asm/auxvec.h>
5 #include <asm/hwcap.h>
6 #include <asm/vdso_datapage.h>
7 
8 /*
9  * ELF register definitions..
10  */
11 #include <asm/ptrace.h>
12 #include <asm/user.h>
13 
14 struct task_struct;
15 
16 typedef unsigned long elf_greg_t;
17 typedef unsigned long elf_freg_t[3];
18 
19 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
20 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
21 
22 typedef struct user_fp elf_fpregset_t;
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_TARGET1		38
56 #define R_ARM_V4BX		40
57 #define R_ARM_PREL31		42
58 #define R_ARM_MOVW_ABS_NC	43
59 #define R_ARM_MOVT_ABS		44
60 
61 #define R_ARM_THM_CALL		10
62 #define R_ARM_THM_JUMP24	30
63 #define R_ARM_THM_MOVW_ABS_NC	47
64 #define R_ARM_THM_MOVT_ABS	48
65 
66 /*
67  * These are used to set parameters in the core dumps.
68  */
69 #define ELF_CLASS	ELFCLASS32
70 #ifdef __ARMEB__
71 #define ELF_DATA	ELFDATA2MSB
72 #else
73 #define ELF_DATA	ELFDATA2LSB
74 #endif
75 #define ELF_ARCH	EM_ARM
76 
77 /*
78  * This yields a string that ld.so will use to load implementation
79  * specific libraries for optimization.  This is more specific in
80  * intent than poking at uname or /proc/cpuinfo.
81  *
82  * For now we just provide a fairly general string that describes the
83  * processor family.  This could be made more specific later if someone
84  * implemented optimisations that require it.  26-bit CPUs give you
85  * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
86  * supported).  32-bit CPUs give you "v3[lb]" for anything based on an
87  * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
88  * core.
89  */
90 #define ELF_PLATFORM_SIZE 8
91 #define ELF_PLATFORM	(elf_platform)
92 
93 extern char elf_platform[];
94 
95 struct elf32_hdr;
96 
97 /*
98  * This is used to ensure we don't load something for the wrong architecture.
99  */
100 extern int elf_check_arch(const struct elf32_hdr *);
101 #define elf_check_arch elf_check_arch
102 
103 #define vmcore_elf64_check_arch(x) (0)
104 
105 extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
106 #define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
107 
108 struct task_struct;
109 int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
110 #define ELF_CORE_COPY_TASK_REGS dump_task_regs
111 
112 #define CORE_DUMP_USE_REGSET
113 #define ELF_EXEC_PAGESIZE	4096
114 
115 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
116    use of this is to invoke "./ld.so someprog" to test out a new version of
117    the loader.  We need to make sure that it is out of the way of the program
118    that it will "exec", and that there is sufficient room for the brk.  */
119 
120 #define ELF_ET_DYN_BASE	(TASK_SIZE / 3 * 2)
121 
122 /* When the program starts, a1 contains a pointer to a function to be
123    registered with atexit, as per the SVR4 ABI.  A value of 0 means we
124    have no such handler.  */
125 #define ELF_PLAT_INIT(_r, load_addr)	(_r)->ARM_r0 = 0
126 
127 extern void elf_set_personality(const struct elf32_hdr *);
128 #define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
129 
130 #ifdef CONFIG_MMU
131 #ifdef CONFIG_VDSO
132 #define ARCH_DLINFO						\
133 do {								\
134 	NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
135 		    (elf_addr_t)current->mm->context.vdso);	\
136 } while (0)
137 #endif
138 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
139 struct linux_binprm;
140 int arch_setup_additional_pages(struct linux_binprm *, int);
141 #endif
142 
143 #endif
144