ucontext.h revision ae0f8f1e48a464b227fc3b68e0817a246e73db9b 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _SYS_UCONTEXT_H_
30#define _SYS_UCONTEXT_H_
31
32#include <signal.h>
33#include <sys/user.h>
34
35__BEGIN_DECLS
36
37#if defined(__arm__)
38
39enum {
40  REG_R0 = 0,
41  REG_R1,
42  REG_R2,
43  REG_R3,
44  REG_R4,
45  REG_R5,
46  REG_R6,
47  REG_R7,
48  REG_R8,
49  REG_R9,
50  REG_R10,
51  REG_R11,
52  REG_R12,
53  REG_R13,
54  REG_R14,
55  REG_R15,
56};
57
58#define NGREG 18 /* Like glibc. */
59
60typedef int greg_t;
61typedef greg_t gregset_t[NGREG];
62
63#include <asm/sigcontext.h>
64typedef struct sigcontext mcontext_t;
65
66typedef struct ucontext {
67  unsigned long uc_flags;
68  struct ucontext* uc_link;
69  stack_t uc_stack;
70  mcontext_t uc_mcontext;
71  sigset_t uc_sigmask;
72  char __padding[128 - sizeof(sigset_t)];
73  unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
74} ucontext_t;
75
76#elif defined(__aarch64__)
77
78#include <asm/sigcontext.h>
79typedef struct sigcontext mcontext_t;
80
81typedef struct ucontext {
82  unsigned long uc_flags;
83  struct ucontext *uc_link;
84  stack_t uc_stack;
85  sigset_t uc_sigmask;
86  char __padding[128 - sizeof(sigset_t)];
87  mcontext_t uc_mcontext;
88} ucontext_t;
89
90#elif defined(__i386__)
91
92enum {
93  REG_GS = 0,
94  REG_FS,
95  REG_ES,
96  REG_DS,
97  REG_EDI,
98  REG_ESI,
99  REG_EBP,
100  REG_ESP,
101  REG_EBX,
102  REG_EDX,
103  REG_ECX,
104  REG_EAX,
105  REG_TRAPNO,
106  REG_ERR,
107  REG_EIP,
108  REG_CS,
109  REG_EFL,
110  REG_UESP,
111  REG_SS,
112  NGREG
113};
114
115typedef int greg_t;
116typedef greg_t gregset_t[NGREG];
117
118struct _libc_fpreg {
119  unsigned short significand[4];
120  unsigned short exponent;
121};
122
123struct _libc_fpstate {
124  unsigned long cw;
125  unsigned long sw;
126  unsigned long tag;
127  unsigned long ipoff;
128  unsigned long cssel;
129  unsigned long dataoff;
130  unsigned long datasel;
131  struct _libc_fpreg _st[8];
132  unsigned long status;
133};
134
135typedef struct _libc_fpstate* fpregset_t;
136
137typedef struct {
138  gregset_t gregs;
139  fpregset_t fpregs;
140  unsigned long oldmask;
141  unsigned long cr2;
142} mcontext_t;
143
144typedef struct ucontext {
145  unsigned long uc_flags;
146  struct ucontext* uc_link;
147  stack_t uc_stack;
148  mcontext_t uc_mcontext;
149  sigset_t uc_sigmask;
150  char __padding[128 - sizeof(sigset_t)];
151  struct _libc_fpstate __fpregs_mem;
152} ucontext_t;
153
154#elif defined(__mips__)
155
156/* glibc doesn't have names for MIPS registers. */
157
158#define NGREG 32
159#define NFPREG 32
160
161typedef unsigned long long greg_t;
162typedef greg_t gregset_t[NGREG];
163
164typedef struct fpregset {
165  union {
166    double fp_dregs[NFPREG];
167    struct {
168      float _fp_fregs;
169      unsigned _fp_pad;
170    } fp_fregs[NFPREG];
171  } fp_r;
172} fpregset_t;
173
174typedef struct {
175  unsigned regmask;
176  unsigned status;
177  greg_t pc;
178  gregset_t gregs;
179  fpregset_t fpregs;
180  unsigned fp_owned;
181  unsigned fpc_csr;
182  unsigned fpc_eir;
183  unsigned used_math;
184  unsigned dsp;
185  greg_t mdhi;
186  greg_t mdlo;
187  unsigned long hi1;
188  unsigned long lo1;
189  unsigned long hi2;
190  unsigned long lo2;
191  unsigned long hi3;
192  unsigned long lo3;
193} mcontext_t;
194
195typedef struct ucontext {
196  unsigned long uc_flags;
197  struct ucontext* uc_link;
198  stack_t uc_stack;
199  mcontext_t uc_mcontext;
200  sigset_t uc_sigmask;
201  char __padding[128 - sizeof(sigset_t)];
202} ucontext_t;
203
204#elif defined(__mips64__)
205
206#error TODO
207
208#elif defined(__x86_64__)
209
210enum {
211  REG_R8 = 0,
212  REG_R9,
213  REG_R10,
214  REG_R11,
215  REG_R12,
216  REG_R13,
217  REG_R14,
218  REG_R15,
219  REG_RDI,
220  REG_RSI,
221  REG_RBP,
222  REG_RBX,
223  REG_RDX,
224  REG_RAX,
225  REG_RCX,
226  REG_RSP,
227  REG_RIP,
228  REG_EFL,
229  REG_CSGSFS,
230  REG_ERR,
231  REG_TRAPNO,
232  REG_OLDMASK,
233  REG_CR2,
234  NGREG
235};
236
237typedef long greg_t;
238typedef greg_t gregset_t[NGREG];
239
240struct _libc_fpxreg {
241  unsigned short significand[4];
242  unsigned short exponent;
243  unsigned short padding[3];
244};
245
246struct _libc_xmmreg {
247  uint32_t element[4];
248};
249
250struct _libc_fpstate {
251  uint16_t cwd;
252  uint16_t swd;
253  uint16_t ftw;
254  uint16_t fop;
255  uint64_t rip;
256  uint64_t rdp;
257  uint32_t mxcsr;
258  uint32_t mxcr_mask;
259  struct _libc_fpxreg _st[8];
260  struct _libc_xmmreg _xmm[16];
261  uint32_t padding[24];
262};
263
264typedef struct _libc_fpstate* fpregset_t;
265
266typedef struct {
267  gregset_t gregs;
268  fpregset_t fpregs;
269  unsigned long __reserved1[8];
270} mcontext_t;
271
272typedef struct ucontext {
273  unsigned long uc_flags;
274  struct ucontext* uc_link;
275  stack_t uc_stack;
276  mcontext_t uc_mcontext;
277  sigset_t uc_sigmask;
278  char __padding[128 - sizeof(sigset_t)];
279  struct _libc_fpstate __fpregs_mem;
280} ucontext_t;
281
282#endif
283
284__END_DECLS
285
286#endif /* _SYS_UCONTEXT_H_ */
287