1 | /* Dump registers. |
2 | Copyright (C) 2001-2016 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <sys/uio.h> |
20 | #include <_itoa.h> |
21 | |
22 | /* We will print the register dump in this format: |
23 | |
24 | RAX: XXXXXXXXXXXXXXXX RBX: XXXXXXXXXXXXXXXX RCX: XXXXXXXXXXXXXXXX |
25 | RDX: XXXXXXXXXXXXXXXX RSI: XXXXXXXXXXXXXXXX RDI: XXXXXXXXXXXXXXXX |
26 | RBP: XXXXXXXXXXXXXXXX R8 : XXXXXXXXXXXXXXXX R9 : XXXXXXXXXXXXXXXX |
27 | R10: XXXXXXXXXXXXXXXX R11: XXXXXXXXXXXXXXXX R12: XXXXXXXXXXXXXXXX |
28 | R13: XXXXXXXXXXXXXXXX R14: XXXXXXXXXXXXXXXX R15: XXXXXXXXXXXXXXXX |
29 | RSP: XXXXXXXXXXXXXXXX |
30 | |
31 | RIP: XXXXXXXXXXXXXXXX EFLAGS: XXXXXXXX |
32 | |
33 | CS: XXXX DS: XXXX ES: XXXX FS: XXXX GS: XXXX |
34 | |
35 | Trap: XXXXXXXX Error: XXXXXXXX OldMask: XXXXXXXX |
36 | RSP/SIGNAL: XXXXXXXXXXXXXXXX CR2: XXXXXXXX |
37 | |
38 | FPUCW: XXXXXXXX FPUSW: XXXXXXXX TAG: XXXXXXXX |
39 | IPOFF: XXXXXXXX CSSEL: XXXX DATAOFF: XXXXXXXX DATASEL: XXXX |
40 | |
41 | ST(0) XXXX XXXXXXXXXXXXXXXX ST(1) XXXX XXXXXXXXXXXXXXXX |
42 | ST(2) XXXX XXXXXXXXXXXXXXXX ST(3) XXXX XXXXXXXXXXXXXXXX |
43 | ST(4) XXXX XXXXXXXXXXXXXXXX ST(5) XXXX XXXXXXXXXXXXXXXX |
44 | ST(6) XXXX XXXXXXXXXXXXXXXX ST(7) XXXX XXXXXXXXXXXXXXXX |
45 | |
46 | mxcsr: XXXX |
47 | XMM0 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM1 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
48 | XMM2 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM3 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
49 | XMM4 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM5 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
50 | XMM6 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM7 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
51 | XMM8 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM9 : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
52 | XMM10: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM11: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
53 | XMM12: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM13: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
54 | XMM14: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XMM15: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
55 | |
56 | */ |
57 | |
58 | static void |
59 | hexvalue (unsigned long int value, char *buf, size_t len) |
60 | { |
61 | char *cp = _itoa_word (value, buf + len, 16, 0); |
62 | while (cp > buf) |
63 | *--cp = '0'; |
64 | } |
65 | |
66 | static void |
67 | register_dump (int fd, struct ucontext *ctx) |
68 | { |
69 | char regs[25][16]; |
70 | char fpregs[30][8]; |
71 | char xmmregs[16][32]; |
72 | struct iovec iov[147]; |
73 | size_t nr = 0; |
74 | int i; |
75 | |
76 | #define ADD_STRING(str) \ |
77 | iov[nr].iov_base = (char *) str; \ |
78 | iov[nr].iov_len = strlen (str); \ |
79 | ++nr |
80 | #define ADD_MEM(str, len) \ |
81 | iov[nr].iov_base = str; \ |
82 | iov[nr].iov_len = len; \ |
83 | ++nr |
84 | |
85 | /* Generate strings of register contents. */ |
86 | hexvalue (ctx->uc_mcontext.gregs[REG_RAX], regs[0], 16); |
87 | hexvalue (ctx->uc_mcontext.gregs[REG_RBX], regs[1], 16); |
88 | hexvalue (ctx->uc_mcontext.gregs[REG_RCX], regs[2], 16); |
89 | hexvalue (ctx->uc_mcontext.gregs[REG_RDX], regs[3], 16); |
90 | hexvalue (ctx->uc_mcontext.gregs[REG_RSI], regs[4], 16); |
91 | hexvalue (ctx->uc_mcontext.gregs[REG_RDI], regs[5], 16); |
92 | hexvalue (ctx->uc_mcontext.gregs[REG_RBP], regs[6], 16); |
93 | hexvalue (ctx->uc_mcontext.gregs[REG_R8], regs[7], 16); |
94 | hexvalue (ctx->uc_mcontext.gregs[REG_R9], regs[8], 16); |
95 | hexvalue (ctx->uc_mcontext.gregs[REG_R10], regs[9], 16); |
96 | hexvalue (ctx->uc_mcontext.gregs[REG_R11], regs[10], 16); |
97 | hexvalue (ctx->uc_mcontext.gregs[REG_R12], regs[11], 16); |
98 | hexvalue (ctx->uc_mcontext.gregs[REG_R13], regs[12], 16); |
99 | hexvalue (ctx->uc_mcontext.gregs[REG_R14], regs[13], 16); |
100 | hexvalue (ctx->uc_mcontext.gregs[REG_R15], regs[14], 16); |
101 | hexvalue (ctx->uc_mcontext.gregs[REG_RSP], regs[15], 16); |
102 | hexvalue (ctx->uc_mcontext.gregs[REG_RIP], regs[16], 16); |
103 | |
104 | hexvalue (ctx->uc_mcontext.gregs[REG_EFL], regs[17], 8); |
105 | hexvalue (ctx->uc_mcontext.gregs[REG_CSGSFS] & 0xffff, regs[18], 4); |
106 | hexvalue ((ctx->uc_mcontext.gregs[REG_CSGSFS] >> 16) & 0xffff, regs[19], 4); |
107 | hexvalue ((ctx->uc_mcontext.gregs[REG_CSGSFS] >> 32) & 0xffff, regs[20], 4); |
108 | /* hexvalue (ctx->ss, regs[23], 4); */ |
109 | hexvalue (ctx->uc_mcontext.gregs[REG_TRAPNO], regs[21], 8); |
110 | hexvalue (ctx->uc_mcontext.gregs[REG_ERR], regs[22], 8); |
111 | hexvalue (ctx->uc_mcontext.gregs[REG_OLDMASK], regs[23], 8); |
112 | hexvalue (ctx->uc_mcontext.gregs[REG_CR2], regs[24], 8); |
113 | |
114 | /* Generate the output. */ |
115 | ADD_STRING ("Register dump:\n\n RAX: " ); |
116 | ADD_MEM (regs[0], 16); |
117 | ADD_STRING (" RBX: " ); |
118 | ADD_MEM (regs[1], 16); |
119 | ADD_STRING (" RCX: " ); |
120 | ADD_MEM (regs[2], 16); |
121 | ADD_STRING ("\n RDX: " ); |
122 | ADD_MEM (regs[3], 16); |
123 | ADD_STRING (" RSI: " ); |
124 | ADD_MEM (regs[4], 16); |
125 | ADD_STRING (" RDI: " ); |
126 | ADD_MEM (regs[5], 16); |
127 | ADD_STRING ("\n RBP: " ); |
128 | ADD_MEM (regs[6], 16); |
129 | ADD_STRING (" R8 : " ); |
130 | ADD_MEM (regs[7], 16); |
131 | ADD_STRING (" R9 : " ); |
132 | ADD_MEM (regs[8], 16); |
133 | ADD_STRING ("\n R10: " ); |
134 | ADD_MEM (regs[9], 16); |
135 | ADD_STRING (" R11: " ); |
136 | ADD_MEM (regs[10], 16); |
137 | ADD_STRING (" R12: " ); |
138 | ADD_MEM (regs[11], 16); |
139 | ADD_STRING ("\n R13: " ); |
140 | ADD_MEM (regs[12], 16); |
141 | ADD_STRING (" R14: " ); |
142 | ADD_MEM (regs[13], 16); |
143 | ADD_STRING (" R15: " ); |
144 | ADD_MEM (regs[14], 16); |
145 | ADD_STRING ("\n RSP: " ); |
146 | ADD_MEM (regs[15], 16); |
147 | ADD_STRING ("\n\n RIP: " ); |
148 | ADD_MEM (regs[16], 16); |
149 | ADD_STRING (" EFLAGS: " ); |
150 | ADD_MEM (regs[17], 8); |
151 | ADD_STRING ("\n\n CS: " ); |
152 | ADD_MEM (regs[18], 4); |
153 | ADD_STRING (" FS: " ); |
154 | ADD_MEM (regs[19], 4); |
155 | ADD_STRING (" GS: " ); |
156 | ADD_MEM (regs[20], 4); |
157 | /* |
158 | ADD_STRING (" SS: "); |
159 | ADD_MEM (regs[23], 4); |
160 | */ |
161 | ADD_STRING ("\n\n Trap: " ); |
162 | ADD_MEM (regs[21], 8); |
163 | ADD_STRING (" Error: " ); |
164 | ADD_MEM (regs[22], 8); |
165 | ADD_STRING (" OldMask: " ); |
166 | ADD_MEM (regs[23], 8); |
167 | ADD_STRING (" CR2: " ); |
168 | ADD_MEM (regs[24], 8); |
169 | |
170 | if (ctx->uc_mcontext.fpregs != NULL) |
171 | { |
172 | |
173 | /* Generate output for the FPU control/status registers. */ |
174 | hexvalue (ctx->uc_mcontext.fpregs->cwd, fpregs[0], 8); |
175 | hexvalue (ctx->uc_mcontext.fpregs->swd, fpregs[1], 8); |
176 | hexvalue (ctx->uc_mcontext.fpregs->ftw, fpregs[2], 8); |
177 | hexvalue (ctx->uc_mcontext.fpregs->rip, fpregs[3], 8); |
178 | hexvalue (ctx->uc_mcontext.fpregs->rdp, fpregs[4], 8); |
179 | |
180 | ADD_STRING ("\n\n FPUCW: " ); |
181 | ADD_MEM (fpregs[0], 8); |
182 | ADD_STRING (" FPUSW: " ); |
183 | ADD_MEM (fpregs[1], 8); |
184 | ADD_STRING (" TAG: " ); |
185 | ADD_MEM (fpregs[2], 8); |
186 | ADD_STRING ("\n RIP: " ); |
187 | ADD_MEM (fpregs[3], 8); |
188 | ADD_STRING (" RDP: " ); |
189 | ADD_MEM (fpregs[4], 8); |
190 | |
191 | /* Now the real FPU registers. */ |
192 | hexvalue (ctx->uc_mcontext.fpregs->_st[0].exponent, fpregs[5], 8); |
193 | hexvalue (ctx->uc_mcontext.fpregs->_st[0].significand[3] << 16 |
194 | | ctx->uc_mcontext.fpregs->_st[0].significand[2], fpregs[6], |
195 | 8); |
196 | hexvalue (ctx->uc_mcontext.fpregs->_st[0].significand[1] << 16 |
197 | | ctx->uc_mcontext.fpregs->_st[0].significand[0], fpregs[7], |
198 | 8); |
199 | hexvalue (ctx->uc_mcontext.fpregs->_st[1].exponent, fpregs[8], 8); |
200 | hexvalue (ctx->uc_mcontext.fpregs->_st[1].significand[3] << 16 |
201 | | ctx->uc_mcontext.fpregs->_st[1].significand[2], fpregs[9], |
202 | 8); |
203 | hexvalue (ctx->uc_mcontext.fpregs->_st[1].significand[1] << 16 |
204 | | ctx->uc_mcontext.fpregs->_st[1].significand[0], fpregs[10], |
205 | 8); |
206 | hexvalue (ctx->uc_mcontext.fpregs->_st[2].exponent, fpregs[11], 8); |
207 | hexvalue (ctx->uc_mcontext.fpregs->_st[2].significand[3] << 16 |
208 | | ctx->uc_mcontext.fpregs->_st[2].significand[2], fpregs[12], |
209 | 8); |
210 | hexvalue (ctx->uc_mcontext.fpregs->_st[2].significand[1] << 16 |
211 | | ctx->uc_mcontext.fpregs->_st[2].significand[0], fpregs[13], |
212 | 8); |
213 | hexvalue (ctx->uc_mcontext.fpregs->_st[3].exponent, fpregs[14], 8); |
214 | hexvalue (ctx->uc_mcontext.fpregs->_st[3].significand[3] << 16 |
215 | | ctx->uc_mcontext.fpregs->_st[3].significand[2], fpregs[15], |
216 | 8); |
217 | hexvalue (ctx->uc_mcontext.fpregs->_st[3].significand[1] << 16 |
218 | | ctx->uc_mcontext.fpregs->_st[3].significand[0], fpregs[16], |
219 | 8); |
220 | hexvalue (ctx->uc_mcontext.fpregs->_st[4].exponent, fpregs[17], 8); |
221 | hexvalue (ctx->uc_mcontext.fpregs->_st[4].significand[3] << 16 |
222 | | ctx->uc_mcontext.fpregs->_st[4].significand[2], fpregs[18], |
223 | 8); |
224 | hexvalue (ctx->uc_mcontext.fpregs->_st[4].significand[1] << 16 |
225 | | ctx->uc_mcontext.fpregs->_st[4].significand[0], fpregs[19], |
226 | 8); |
227 | hexvalue (ctx->uc_mcontext.fpregs->_st[5].exponent, fpregs[20], 8); |
228 | hexvalue (ctx->uc_mcontext.fpregs->_st[5].significand[3] << 16 |
229 | | ctx->uc_mcontext.fpregs->_st[5].significand[2], fpregs[21], |
230 | 8); |
231 | hexvalue (ctx->uc_mcontext.fpregs->_st[5].significand[1] << 16 |
232 | | ctx->uc_mcontext.fpregs->_st[5].significand[0], fpregs[22], |
233 | 8); |
234 | hexvalue (ctx->uc_mcontext.fpregs->_st[6].exponent, fpregs[23], 8); |
235 | hexvalue (ctx->uc_mcontext.fpregs->_st[6].significand[3] << 16 |
236 | | ctx->uc_mcontext.fpregs->_st[6].significand[2], fpregs[24], |
237 | 8); |
238 | hexvalue (ctx->uc_mcontext.fpregs->_st[6].significand[1] << 16 |
239 | | ctx->uc_mcontext.fpregs->_st[6].significand[0], fpregs[25], |
240 | 8); |
241 | hexvalue (ctx->uc_mcontext.fpregs->_st[7].exponent, fpregs[26], 8); |
242 | hexvalue (ctx->uc_mcontext.fpregs->_st[7].significand[3] << 16 |
243 | | ctx->uc_mcontext.fpregs->_st[7].significand[2], fpregs[27], |
244 | 8); |
245 | hexvalue (ctx->uc_mcontext.fpregs->_st[7].significand[1] << 16 |
246 | | ctx->uc_mcontext.fpregs->_st[7].significand[0], fpregs[28], |
247 | 8); |
248 | |
249 | hexvalue (ctx->uc_mcontext.fpregs->mxcsr, fpregs[29], 4); |
250 | |
251 | for (i = 0; i < 16; i++) |
252 | hexvalue (ctx->uc_mcontext.fpregs->_xmm[i].element[3] << 24 |
253 | | ctx->uc_mcontext.fpregs->_xmm[i].element[2] << 16 |
254 | | ctx->uc_mcontext.fpregs->_xmm[i].element[1] << 8 |
255 | | ctx->uc_mcontext.fpregs->_xmm[i].element[0], xmmregs[i], |
256 | 32); |
257 | |
258 | |
259 | ADD_STRING ("\n\n ST(0) " ); |
260 | ADD_MEM (fpregs[5], 4); |
261 | ADD_STRING (" " ); |
262 | ADD_MEM (fpregs[6], 8); |
263 | ADD_MEM (fpregs[7], 8); |
264 | ADD_STRING (" ST(1) " ); |
265 | ADD_MEM (fpregs[8], 4); |
266 | ADD_STRING (" " ); |
267 | ADD_MEM (fpregs[9], 8); |
268 | ADD_MEM (fpregs[10], 8); |
269 | ADD_STRING ("\n ST(2) " ); |
270 | ADD_MEM (fpregs[11], 4); |
271 | ADD_STRING (" " ); |
272 | ADD_MEM (fpregs[12], 8); |
273 | ADD_MEM (fpregs[13], 8); |
274 | ADD_STRING (" ST(3) " ); |
275 | ADD_MEM (fpregs[14], 4); |
276 | ADD_STRING (" " ); |
277 | ADD_MEM (fpregs[15], 8); |
278 | ADD_MEM (fpregs[16], 8); |
279 | ADD_STRING ("\n ST(4) " ); |
280 | ADD_MEM (fpregs[17], 4); |
281 | ADD_STRING (" " ); |
282 | ADD_MEM (fpregs[18], 8); |
283 | ADD_MEM (fpregs[19], 8); |
284 | ADD_STRING (" ST(5) " ); |
285 | ADD_MEM (fpregs[20], 4); |
286 | ADD_STRING (" " ); |
287 | ADD_MEM (fpregs[21], 8); |
288 | ADD_MEM (fpregs[22], 8); |
289 | ADD_STRING ("\n ST(6) " ); |
290 | ADD_MEM (fpregs[23], 4); |
291 | ADD_STRING (" " ); |
292 | ADD_MEM (fpregs[24], 8); |
293 | ADD_MEM (fpregs[25], 8); |
294 | ADD_STRING (" ST(7) " ); |
295 | ADD_MEM (fpregs[27], 4); |
296 | ADD_STRING (" " ); |
297 | ADD_MEM (fpregs[27], 8); |
298 | ADD_MEM (fpregs[28], 8); |
299 | |
300 | ADD_STRING ("\n mxcsr: " ); |
301 | ADD_MEM (fpregs[29], 4); |
302 | |
303 | ADD_STRING ("\n XMM0: " ); |
304 | ADD_MEM (xmmregs[0], 32); |
305 | ADD_STRING (" XMM1: " ); |
306 | ADD_MEM (xmmregs[0], 32); |
307 | ADD_STRING ("\n XMM2: " ); |
308 | ADD_MEM (xmmregs[0], 32); |
309 | ADD_STRING (" XMM3: " ); |
310 | ADD_MEM (xmmregs[0], 32); |
311 | ADD_STRING ("\n XMM4: " ); |
312 | ADD_MEM (xmmregs[0], 32); |
313 | ADD_STRING (" XMM5: " ); |
314 | ADD_MEM (xmmregs[0], 32); |
315 | ADD_STRING ("\n XMM6: " ); |
316 | ADD_MEM (xmmregs[0], 32); |
317 | ADD_STRING (" XMM7: " ); |
318 | ADD_MEM (xmmregs[0], 32); |
319 | ADD_STRING ("\n XMM8: " ); |
320 | ADD_MEM (xmmregs[0], 32); |
321 | ADD_STRING (" XMM9: " ); |
322 | ADD_MEM (xmmregs[0], 32); |
323 | ADD_STRING ("\n XMM10: " ); |
324 | ADD_MEM (xmmregs[0], 32); |
325 | ADD_STRING (" XMM11: " ); |
326 | ADD_MEM (xmmregs[0], 32); |
327 | ADD_STRING ("\n XMM12: " ); |
328 | ADD_MEM (xmmregs[0], 32); |
329 | ADD_STRING (" XMM13: " ); |
330 | ADD_MEM (xmmregs[0], 32); |
331 | ADD_STRING ("\n XMM14: " ); |
332 | ADD_MEM (xmmregs[0], 32); |
333 | ADD_STRING (" XMM15: " ); |
334 | ADD_MEM (xmmregs[0], 32); |
335 | |
336 | } |
337 | |
338 | ADD_STRING ("\n" ); |
339 | |
340 | /* Write the stuff out. */ |
341 | writev (fd, iov, nr); |
342 | } |
343 | |
344 | |
345 | #define REGISTER_DUMP register_dump (fd, ctx) |
346 | |