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
|
#ifndef __ASM_X86_64_ELF_H
#define __ASM_X86_64_ELF_H
/*
* ELF register definitions..
*/
#include <asm/ptrace.h>
#include <asm/user.h>
#include <asm/processor.h>
/* x86-64 relocation types */
#define R_X86_64_NONE 0 /* No reloc */
#define R_X86_64_64 1 /* Direct 64 bit */
#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
#define R_X86_64_PLT32 4 /* 32 bit PLT address */
#define R_X86_64_COPY 5 /* Copy symbol at runtime */
#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
#define R_X86_64_RELATIVE 8 /* Adjust by program base */
#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative
offset to GOT */
#define R_X86_64_32 10 /* Direct 32 bit zero extended */
#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
#define R_X86_64_16 12 /* Direct 16 bit zero extended */
#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
#define R_X86_64_8 14 /* Direct 8 bit sign extended */
#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
#define R_X86_64_NUM 16
typedef unsigned long elf_greg_t;
#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct user_i387_struct elf_fpregset_t;
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) \
((x)->e_machine == EM_X86_64)
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS64
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_X86_64
/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
contains a pointer to a function which might be registered using `atexit'.
This provides a mean for the dynamic linker to call DT_FINI functions for
shared libraries that have been loaded before the code runs.
A value of 0 tells we have no such handler.
We might as well make sure everything else is cleared too (except for %esp),
just to make things more deterministic.
*/
#define ELF_PLAT_INIT(_r, load_addr) do { \
struct task_struct *cur = current; \
(_r)->rbx = 0; (_r)->rcx = 0; (_r)->rdx = 0; \
(_r)->rsi = 0; (_r)->rdi = 0; (_r)->rbp = 0; \
(_r)->rax = 0; \
(_r)->r8 = 0; \
(_r)->r9 = 0; \
(_r)->r10 = 0; \
(_r)->r11 = 0; \
(_r)->r12 = 0; \
(_r)->r13 = 0; \
(_r)->r14 = 0; \
(_r)->r15 = 0; \
cur->thread.fs = 0; cur->thread.gs = 0; \
cur->thread.fsindex = 0; cur->thread.gsindex = 0; \
cur->thread.ds = 0; cur->thread.es = 0; \
clear_thread_flag(TIF_IA32); \
} while (0)
#define USE_ELF_CORE_DUMP
#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)
/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
now struct_user_regs, they are different). Assumes current is the process
getting dumped. */
#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \
unsigned v; \
(pr_reg)[0] = (regs)->r15; \
(pr_reg)[1] = (regs)->r14; \
(pr_reg)[2] = (regs)->r13; \
(pr_reg)[3] = (regs)->r12; \
(pr_reg)[4] = (regs)->rbp; \
(pr_reg)[5] = (regs)->rbx; \
(pr_reg)[6] = (regs)->r11; \
(pr_reg)[7] = (regs)->r10; \
(pr_reg)[8] = (regs)->r9; \
(pr_reg)[9] = (regs)->r8; \
(pr_reg)[10] = (regs)->rax; \
(pr_reg)[11] = (regs)->rcx; \
(pr_reg)[12] = (regs)->rdx; \
(pr_reg)[13] = (regs)->rsi; \
(pr_reg)[14] = (regs)->rdi; \
(pr_reg)[15] = (regs)->orig_rax; \
(pr_reg)[16] = (regs)->rip; \
(pr_reg)[17] = (regs)->cs; \
(pr_reg)[18] = (regs)->eflags; \
(pr_reg)[19] = (regs)->rsp; \
(pr_reg)[20] = (regs)->ss; \
(pr_reg)[21] = current->thread.fs; \
(pr_reg)[22] = current->thread.gs; \
asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \
} while(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 (boot_cpu_data.x86_capability[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.
For the moment, we have only optimizations for the Intel generations,
but that could change... */
/* I'm not sure if we can use '-' here */
#define ELF_PLATFORM ("x86_64")
#ifdef __KERNEL__
extern void set_personality_64bit(void);
#define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
/*
* An executable for which elf_read_implies_exec() returns TRUE will
* have the READ_IMPLIES_EXEC personality flag set automatically.
*/
#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X)
struct task_struct;
extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
#endif
#endif
|
