1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* Copyright 2010 Tilera Corporation. 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
* as published by the Free Software Foundation, version 2.
*
* 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, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
#ifndef _ASM_TILE_ELF_H
#define _ASM_TILE_ELF_H
/*
* ELF register definitions.
*/
#include <arch/chip.h>
#include <linux/ptrace.h>
#include <asm/byteorder.h>
#include <asm/page.h>
typedef unsigned long elf_greg_t;
#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
#define EM_TILEPRO 188
#define EM_TILEGX 191
/* Provide a nominal data structure. */
#define ELF_NFPREG 0
typedef double elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
#ifdef __tilegx__
#define ELF_CLASS ELFCLASS64
#else
#define ELF_CLASS ELFCLASS32
#endif
#ifdef __BIG_ENDIAN__
#define ELF_DATA ELFDATA2MSB
#else
#define ELF_DATA ELFDATA2LSB
#endif
/*
* There seems to be a bug in how compat_binfmt_elf.c works: it
* #undefs ELF_ARCH, but it is then used in binfmt_elf.c for fill_note_info().
* Hack around this by providing an enum value of ELF_ARCH.
*/
enum { ELF_ARCH = CHIP_ELF_TYPE() };
#define ELF_ARCH ELF_ARCH
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) \
((x)->e_ident[EI_CLASS] == ELF_CLASS && \
(x)->e_ident[EI_DATA] == ELF_DATA && \
(x)->e_machine == CHIP_ELF_TYPE())
/* The module loader only handles a few relocation types. */
#ifndef __tilegx__
#define R_TILE_32 1
#define R_TILE_JOFFLONG_X1 15
#define R_TILE_IMM16_X0_LO 25
#define R_TILE_IMM16_X1_LO 26
#define R_TILE_IMM16_X0_HA 29
#define R_TILE_IMM16_X1_HA 30
#else
#define R_TILEGX_64 1
#define R_TILEGX_JUMPOFF_X1 21
#define R_TILEGX_IMM16_X0_HW0 36
#define R_TILEGX_IMM16_X1_HW0 37
#define R_TILEGX_IMM16_X0_HW1 38
#define R_TILEGX_IMM16_X1_HW1 39
#define R_TILEGX_IMM16_X0_HW2_LAST 48
#define R_TILEGX_IMM16_X1_HW2_LAST 49
#endif
/* Use standard page size for core dumps. */
#define ELF_EXEC_PAGESIZE PAGE_SIZE
/*
* 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 (TASK_SIZE / 3 * 2)
#define ELF_CORE_COPY_REGS(_dest, _regs) \
memcpy((char *) &_dest, (char *) _regs, \
sizeof(struct pt_regs));
/* No additional FP registers to copy. */
#define ELF_CORE_COPY_FPREGS(t, fpu) 0
/*
* This yields a mask that user programs can use to figure out what
* instruction set this CPU supports. This could be done in user space,
* but it's not easy, and we've already done it here.
*/
#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)
extern void elf_plat_init(struct pt_regs *regs, unsigned long load_addr);
#define ELF_PLAT_INIT(_r, load_addr) elf_plat_init(_r, load_addr)
extern int dump_task_regs(struct task_struct *, elf_gregset_t *);
#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
/* Tilera Linux has no personalities currently, so no need to do anything. */
#define SET_PERSONALITY(ex) do { } while (0)
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
/* Support auto-mapping of the user interrupt vectors. */
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int executable_stack);
#define ARCH_DLINFO \
do { \
NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \
} while (0)
struct mm_struct;
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
#ifdef CONFIG_COMPAT
#define COMPAT_ELF_PLATFORM "tilegx-m32"
/*
* "Compat" binaries have the same machine type, but 32-bit class,
* since they're not a separate machine type, but just a 32-bit
* variant of the standard 64-bit architecture.
*/
#define compat_elf_check_arch(x) \
((x)->e_ident[EI_CLASS] == ELFCLASS32 && \
(x)->e_machine == CHIP_ELF_TYPE())
#define compat_start_thread(regs, ip, usp) do { \
regs->pc = ptr_to_compat_reg((void *)(ip)); \
regs->sp = ptr_to_compat_reg((void *)(usp)); \
single_step_execve(); \
} while (0)
/*
* Use SET_PERSONALITY to indicate compatibility via TS_COMPAT.
*/
#undef SET_PERSONALITY
#define SET_PERSONALITY(ex) \
do { \
set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
current_thread_info()->status &= ~TS_COMPAT; \
} while (0)
#define COMPAT_SET_PERSONALITY(ex) \
do { \
set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
current_thread_info()->status |= TS_COMPAT; \
} while (0)
#define COMPAT_ELF_ET_DYN_BASE (0xffffffff / 3 * 2)
#endif /* CONFIG_COMPAT */
#define CORE_DUMP_USE_REGSET
#endif /* _ASM_TILE_ELF_H */
|
