summaryrefslogtreecommitdiffstats
path: root/arch/um/include/sysdep-x86_64/ptrace.h
blob: b3412b64cbea6ab661ef3bbb2b14313ea62654f0 (plain)
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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
/*
 * Copyright 2003 PathScale, Inc.
 * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 *
 * Licensed under the GPL
 */

#ifndef __SYSDEP_X86_64_PTRACE_H
#define __SYSDEP_X86_64_PTRACE_H

#include "uml-config.h"
#include "user_constants.h"
#include "sysdep/faultinfo.h"

#define MAX_REG_OFFSET (UM_FRAME_SIZE)
#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))

#include "skas_ptregs.h"

#define REGS_IP(r) ((r)[HOST_IP])
#define REGS_SP(r) ((r)[HOST_SP])

#define REGS_RBX(r) ((r)[HOST_RBX])
#define REGS_RCX(r) ((r)[HOST_RCX])
#define REGS_RDX(r) ((r)[HOST_RDX])
#define REGS_RSI(r) ((r)[HOST_RSI])
#define REGS_RDI(r) ((r)[HOST_RDI])
#define REGS_RBP(r) ((r)[HOST_RBP])
#define REGS_RAX(r) ((r)[HOST_RAX])
#define REGS_R8(r) ((r)[HOST_R8])
#define REGS_R9(r) ((r)[HOST_R9])
#define REGS_R10(r) ((r)[HOST_R10])
#define REGS_R11(r) ((r)[HOST_R11])
#define REGS_R12(r) ((r)[HOST_R12])
#define REGS_R13(r) ((r)[HOST_R13])
#define REGS_R14(r) ((r)[HOST_R14])
#define REGS_R15(r) ((r)[HOST_R15])
#define REGS_CS(r) ((r)[HOST_CS])
#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
#define REGS_SS(r) ((r)[HOST_SS])

#define HOST_FS_BASE 21
#define HOST_GS_BASE 22
#define HOST_DS 23
#define HOST_ES 24
#define HOST_FS 25
#define HOST_GS 26

/* Also defined in asm/ptrace-x86_64.h, but not in libc headers.  So, these
 * are already defined for kernel code, but not for userspace code.
 */
#ifndef FS_BASE
/* These aren't defined in ptrace.h, but exist in struct user_regs_struct,
 * which is what x86_64 ptrace actually uses.
 */
#define FS_BASE (HOST_FS_BASE * sizeof(long))
#define GS_BASE (HOST_GS_BASE * sizeof(long))
#define DS (HOST_DS * sizeof(long))
#define ES (HOST_ES * sizeof(long))
#define FS (HOST_FS * sizeof(long))
#define GS (HOST_GS * sizeof(long))
#endif

#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE])
#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE])
#define REGS_DS(r) ((r)[HOST_DS])
#define REGS_ES(r) ((r)[HOST_ES])
#define REGS_FS(r) ((r)[HOST_FS])
#define REGS_GS(r) ((r)[HOST_GS])

#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX])

#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res)

#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))

#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type)

#define REGS_FAULT_ADDR(r) ((r)->fault_addr)

#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)

#define REGS_TRAP(r) ((r)->trap_type)

#define REGS_ERR(r) ((r)->fault_type)

/* XXX */
union uml_pt_regs {
	struct skas_regs {
		unsigned long regs[MAX_REG_NR];
		unsigned long fp[HOST_FP_SIZE];
                struct faultinfo faultinfo;
		long syscall;
		int is_user;
	} skas;
};

#define EMPTY_UML_PT_REGS { }

#define UPT_RBX(r) REGS_RBX((r)->skas.regs)
#define UPT_RCX(r) REGS_RCX((r)->skas.regs)
#define UPT_RDX(r) REGS_RDX((r)->skas.regs)
#define UPT_RSI(r) REGS_RSI((r)->skas.regs)
#define UPT_RDI(r) REGS_RDI((r)->skas.regs)
#define UPT_RBP(r) REGS_RBP((r)->skas.regs)
#define UPT_RAX(r) REGS_RAX((r)->skas.regs)
#define UPT_R8(r) REGS_R8((r)->skas.regs)
#define UPT_R9(r) REGS_R9((r)->skas.regs)
#define UPT_R10(r) REGS_R10((r)->skas.regs)
#define UPT_R11(r) REGS_R11((r)->skas.regs)
#define UPT_R12(r) REGS_R12((r)->skas.regs)
#define UPT_R13(r) REGS_R13((r)->skas.regs)
#define UPT_R14(r) REGS_R14((r)->skas.regs)
#define UPT_R15(r) REGS_R15((r)->skas.regs)
#define UPT_CS(r) REGS_CS((r)->skas.regs)
#define UPT_FS_BASE(r) \
	REGS_FS_BASE((r)->skas.regs)
#define UPT_FS(r) REGS_FS((r)->skas.regs)
#define UPT_GS_BASE(r) \
	REGS_GS_BASE((r)->skas.regs)
#define UPT_GS(r) REGS_GS((r)->skas.regs)
#define UPT_DS(r) REGS_DS((r)->skas.regs)
#define UPT_ES(r) REGS_ES((r)->skas.regs)
#define UPT_CS(r) REGS_CS((r)->skas.regs)
#define UPT_SS(r) REGS_SS((r)->skas.regs)
#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->skas.regs)

#define UPT_IP(r) REGS_IP((r)->skas.regs)
#define UPT_SP(r) REGS_SP((r)->skas.regs)

#define UPT_EFLAGS(r) REGS_EFLAGS((r)->skas.regs)
#define UPT_SC(r) ((r)->tt.sc)
#define UPT_SYSCALL_NR(r) ((r)->skas.syscall)
#define UPT_SYSCALL_RET(r) UPT_RAX(r)

extern int user_context(unsigned long sp);

#define UPT_IS_USER(r) ((r)->skas.is_user)

#define UPT_SYSCALL_ARG1(r) UPT_RDI(r)
#define UPT_SYSCALL_ARG2(r) UPT_RSI(r)
#define UPT_SYSCALL_ARG3(r) UPT_RDX(r)
#define UPT_SYSCALL_ARG4(r) UPT_R10(r)
#define UPT_SYSCALL_ARG5(r) UPT_R8(r)
#define UPT_SYSCALL_ARG6(r) UPT_R9(r)

struct syscall_args {
	unsigned long args[6];
};

#define SYSCALL_ARGS(r) ((struct syscall_args) \
                        { .args = { UPT_SYSCALL_ARG1(r), \
                                    UPT_SYSCALL_ARG2(r), \
 			            UPT_SYSCALL_ARG3(r), \
                                    UPT_SYSCALL_ARG4(r), \
		                    UPT_SYSCALL_ARG5(r), \
                                    UPT_SYSCALL_ARG6(r) } } )

#define UPT_REG(regs, reg) \
        ({      unsigned long val; \
                switch(reg){ \
		case R8: val = UPT_R8(regs); break; \
		case R9: val = UPT_R9(regs); break; \
		case R10: val = UPT_R10(regs); break; \
		case R11: val = UPT_R11(regs); break; \
		case R12: val = UPT_R12(regs); break; \
		case R13: val = UPT_R13(regs); break; \
		case R14: val = UPT_R14(regs); break; \
		case R15: val = UPT_R15(regs); break; \
                case RIP: val = UPT_IP(regs); break; \
                case RSP: val = UPT_SP(regs); break; \
                case RAX: val = UPT_RAX(regs); break; \
                case RBX: val = UPT_RBX(regs); break; \
                case RCX: val = UPT_RCX(regs); break; \
                case RDX: val = UPT_RDX(regs); break; \
                case RSI: val = UPT_RSI(regs); break; \
                case RDI: val = UPT_RDI(regs); break; \
                case RBP: val = UPT_RBP(regs); break; \
                case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \
                case CS: val = UPT_CS(regs); break; \
                case SS: val = UPT_SS(regs); break; \
		case FS_BASE: val = UPT_FS_BASE(regs); break; \
                case GS_BASE: val = UPT_GS_BASE(regs); break; \
                case DS: val = UPT_DS(regs); break; \
                case ES: val = UPT_ES(regs); break; \
                case FS : val = UPT_FS (regs); break; \
		case GS: val = UPT_GS(regs); break;	    \
                case EFLAGS: val = UPT_EFLAGS(regs); break; \
                default :  \
                        panic("Bad register in UPT_REG : %d\n", reg);  \
                        val = -1; \
                } \
                val; \
        })


#define UPT_SET(regs, reg, val) \
        ({      unsigned long __upt_val = val; \
                switch(reg){ \
                case R8: UPT_R8(regs) = __upt_val; break; \
                case R9: UPT_R9(regs) = __upt_val; break; \
                case R10: UPT_R10(regs) = __upt_val; break; \
                case R11: UPT_R11(regs) = __upt_val; break; \
                case R12: UPT_R12(regs) = __upt_val; break; \
                case R13: UPT_R13(regs) = __upt_val; break; \
                case R14: UPT_R14(regs) = __upt_val; break; \
                case R15: UPT_R15(regs) = __upt_val; break; \
                case RIP: UPT_IP(regs) = __upt_val; break; \
                case RSP: UPT_SP(regs) = __upt_val; break; \
                case RAX: UPT_RAX(regs) = __upt_val; break; \
                case RBX: UPT_RBX(regs) = __upt_val; break; \
                case RCX: UPT_RCX(regs) = __upt_val; break; \
                case RDX: UPT_RDX(regs) = __upt_val; break; \
                case RSI: UPT_RSI(regs) = __upt_val; break; \
                case RDI: UPT_RDI(regs) = __upt_val; break; \
                case RBP: UPT_RBP(regs) = __upt_val; break; \
                case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
                case CS: UPT_CS(regs) = __upt_val; break; \
                case SS: UPT_SS(regs) = __upt_val; break; \
                case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \
                case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \
                case DS: UPT_DS(regs) = __upt_val; break; \
                case ES: UPT_ES(regs) = __upt_val; break; \
                case FS: UPT_FS(regs) = __upt_val; break; \
                case GS: UPT_GS(regs) = __upt_val; break; \
                case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
                default :  \
                        panic("Bad register in UPT_SET : %d\n", reg);  \
			break; \
                } \
                __upt_val; \
        })

#define UPT_SET_SYSCALL_RETURN(r, res) \
	REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res))

#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->skas.regs)

#define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas)

#define UPT_FAULTINFO(r) (&(r)->skas.faultinfo)

#endif
OpenPOWER on IntegriCloud