1 /* Low level interface to valgrind, for the remote server for GDB integrated
2 in valgrind.
3 Copyright (C) 2011
4 Free Software Foundation, Inc.
5
6 This file is part of VALGRIND.
7 It has been inspired from a file from gdbserver in gdb 6.6.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
23
24 #include "server.h"
25 #include "target.h"
26 #include "regdef.h"
27 #include "regcache.h"
28
29 #include "pub_core_machine.h"
30 #include "pub_core_threadstate.h"
31 #include "pub_core_transtab.h"
32 #include "pub_core_gdbserver.h"
33
34 #include "valgrind_low.h"
35
36 #include "libvex_guest_ppc64.h"
37
38 static struct reg regs[] = {
39 { "r0", 0, 64 },
40 { "r1", 64, 64 },
41 { "r2", 128, 64 },
42 { "r3", 192, 64 },
43 { "r4", 256, 64 },
44 { "r5", 320, 64 },
45 { "r6", 384, 64 },
46 { "r7", 448, 64 },
47 { "r8", 512, 64 },
48 { "r9", 576, 64 },
49 { "r10", 640, 64 },
50 { "r11", 704, 64 },
51 { "r12", 768, 64 },
52 { "r13", 832, 64 },
53 { "r14", 896, 64 },
54 { "r15", 960, 64 },
55 { "r16", 1024, 64 },
56 { "r17", 1088, 64 },
57 { "r18", 1152, 64 },
58 { "r19", 1216, 64 },
59 { "r20", 1280, 64 },
60 { "r21", 1344, 64 },
61 { "r22", 1408, 64 },
62 { "r23", 1472, 64 },
63 { "r24", 1536, 64 },
64 { "r25", 1600, 64 },
65 { "r26", 1664, 64 },
66 { "r27", 1728, 64 },
67 { "r28", 1792, 64 },
68 { "r29", 1856, 64 },
69 { "r30", 1920, 64 },
70 { "r31", 1984, 64 },
71 { "f0", 2048, 64 },
72 { "f1", 2112, 64 },
73 { "f2", 2176, 64 },
74 { "f3", 2240, 64 },
75 { "f4", 2304, 64 },
76 { "f5", 2368, 64 },
77 { "f6", 2432, 64 },
78 { "f7", 2496, 64 },
79 { "f8", 2560, 64 },
80 { "f9", 2624, 64 },
81 { "f10", 2688, 64 },
82 { "f11", 2752, 64 },
83 { "f12", 2816, 64 },
84 { "f13", 2880, 64 },
85 { "f14", 2944, 64 },
86 { "f15", 3008, 64 },
87 { "f16", 3072, 64 },
88 { "f17", 3136, 64 },
89 { "f18", 3200, 64 },
90 { "f19", 3264, 64 },
91 { "f20", 3328, 64 },
92 { "f21", 3392, 64 },
93 { "f22", 3456, 64 },
94 { "f23", 3520, 64 },
95 { "f24", 3584, 64 },
96 { "f25", 3648, 64 },
97 { "f26", 3712, 64 },
98 { "f27", 3776, 64 },
99 { "f28", 3840, 64 },
100 { "f29", 3904, 64 },
101 { "f30", 3968, 64 },
102 { "f31", 4032, 64 },
103 { "pc", 4096, 64 },
104 { "msr", 4160, 64 },
105 { "cr", 4224, 32 },
106 { "lr", 4256, 64 },
107 { "ctr", 4320, 64 },
108 { "xer", 4384, 32 },
109 { "fpscr", 4416, 32 },
110 { "orig_r3", 4448, 64 },
111 { "trap", 4512, 64 },
112 { "vr0", 4576, 128 },
113 { "vr1", 4704, 128 },
114 { "vr2", 4832, 128 },
115 { "vr3", 4960, 128 },
116 { "vr4", 5088, 128 },
117 { "vr5", 5216, 128 },
118 { "vr6", 5344, 128 },
119 { "vr7", 5472, 128 },
120 { "vr8", 5600, 128 },
121 { "vr9", 5728, 128 },
122 { "vr10", 5856, 128 },
123 { "vr11", 5984, 128 },
124 { "vr12", 6112, 128 },
125 { "vr13", 6240, 128 },
126 { "vr14", 6368, 128 },
127 { "vr15", 6496, 128 },
128 { "vr16", 6624, 128 },
129 { "vr17", 6752, 128 },
130 { "vr18", 6880, 128 },
131 { "vr19", 7008, 128 },
132 { "vr20", 7136, 128 },
133 { "vr21", 7264, 128 },
134 { "vr22", 7392, 128 },
135 { "vr23", 7520, 128 },
136 { "vr24", 7648, 128 },
137 { "vr25", 7776, 128 },
138 { "vr26", 7904, 128 },
139 { "vr27", 8032, 128 },
140 { "vr28", 8160, 128 },
141 { "vr29", 8288, 128 },
142 { "vr30", 8416, 128 },
143 { "vr31", 8544, 128 },
144 { "vscr", 8672, 32 },
145 { "vrsave", 8704, 32 },
146 };
147 static const char *expedite_regs[] = { "r1", "pc", 0 };
148 #define num_regs (sizeof (regs) / sizeof (regs[0]))
149
150 static
get_pc(void)151 CORE_ADDR get_pc (void)
152 {
153 unsigned long pc;
154
155 collect_register_by_name ("pc", &pc);
156
157 dlog(1, "stop pc is %p\n", (void *) pc);
158 return pc;
159 }
160
161 static
set_pc(CORE_ADDR newpc)162 void set_pc (CORE_ADDR newpc)
163 {
164 Bool mod;
165 supply_register_by_name ("pc", &newpc, &mod);
166 if (mod)
167 dlog(1, "set pc to %p\n", C2v (newpc));
168 else
169 dlog(1, "set pc not changed %p\n", C2v (newpc));
170 }
171
172 /* store registers in the guest state (gdbserver_to_valgrind)
173 or fetch register from the guest state (valgrind_to_gdbserver). */
174 static
transfer_register(ThreadId tid,int abs_regno,void * buf,transfer_direction dir,int size,Bool * mod)175 void transfer_register (ThreadId tid, int abs_regno, void * buf,
176 transfer_direction dir, int size, Bool *mod)
177 {
178 ThreadState* tst = VG_(get_ThreadState)(tid);
179 int set = abs_regno / num_regs;
180 int regno = abs_regno % num_regs;
181 *mod = False;
182
183 VexGuestPPC64State* ppc64 = (VexGuestPPC64State*) get_arch (set, tst);
184
185 switch (regno) {
186 // numbers here have to match the order of regs above
187 // Attention: gdb order does not match valgrind order.
188 case 0: VG_(transfer) (&ppc64->guest_GPR0, buf, dir, size, mod); break;
189 case 1: VG_(transfer) (&ppc64->guest_GPR1, buf, dir, size, mod); break;
190 case 2: VG_(transfer) (&ppc64->guest_GPR2, buf, dir, size, mod); break;
191 case 3: VG_(transfer) (&ppc64->guest_GPR3, buf, dir, size, mod); break;
192 case 4: VG_(transfer) (&ppc64->guest_GPR4, buf, dir, size, mod); break;
193 case 5: VG_(transfer) (&ppc64->guest_GPR5, buf, dir, size, mod); break;
194 case 6: VG_(transfer) (&ppc64->guest_GPR6, buf, dir, size, mod); break;
195 case 7: VG_(transfer) (&ppc64->guest_GPR7, buf, dir, size, mod); break;
196 case 8: VG_(transfer) (&ppc64->guest_GPR8, buf, dir, size, mod); break;
197 case 9: VG_(transfer) (&ppc64->guest_GPR9, buf, dir, size, mod); break;
198 case 10: VG_(transfer) (&ppc64->guest_GPR10, buf, dir, size, mod); break;
199 case 11: VG_(transfer) (&ppc64->guest_GPR11, buf, dir, size, mod); break;
200 case 12: VG_(transfer) (&ppc64->guest_GPR12, buf, dir, size, mod); break;
201 case 13: VG_(transfer) (&ppc64->guest_GPR13, buf, dir, size, mod); break;
202 case 14: VG_(transfer) (&ppc64->guest_GPR14, buf, dir, size, mod); break;
203 case 15: VG_(transfer) (&ppc64->guest_GPR15, buf, dir, size, mod); break;
204 case 16: VG_(transfer) (&ppc64->guest_GPR16, buf, dir, size, mod); break;
205 case 17: VG_(transfer) (&ppc64->guest_GPR17, buf, dir, size, mod); break;
206 case 18: VG_(transfer) (&ppc64->guest_GPR18, buf, dir, size, mod); break;
207 case 19: VG_(transfer) (&ppc64->guest_GPR19, buf, dir, size, mod); break;
208 case 20: VG_(transfer) (&ppc64->guest_GPR20, buf, dir, size, mod); break;
209 case 21: VG_(transfer) (&ppc64->guest_GPR21, buf, dir, size, mod); break;
210 case 22: VG_(transfer) (&ppc64->guest_GPR22, buf, dir, size, mod); break;
211 case 23: VG_(transfer) (&ppc64->guest_GPR23, buf, dir, size, mod); break;
212 case 24: VG_(transfer) (&ppc64->guest_GPR24, buf, dir, size, mod); break;
213 case 25: VG_(transfer) (&ppc64->guest_GPR25, buf, dir, size, mod); break;
214 case 26: VG_(transfer) (&ppc64->guest_GPR26, buf, dir, size, mod); break;
215 case 27: VG_(transfer) (&ppc64->guest_GPR27, buf, dir, size, mod); break;
216 case 28: VG_(transfer) (&ppc64->guest_GPR28, buf, dir, size, mod); break;
217 case 29: VG_(transfer) (&ppc64->guest_GPR29, buf, dir, size, mod); break;
218 case 30: VG_(transfer) (&ppc64->guest_GPR30, buf, dir, size, mod); break;
219 case 31: VG_(transfer) (&ppc64->guest_GPR31, buf, dir, size, mod); break;
220 case 32: VG_(transfer) (&ppc64->guest_VSR0, buf, dir, size, mod); break;
221 case 33: VG_(transfer) (&ppc64->guest_VSR1, buf, dir, size, mod); break;
222 case 34: VG_(transfer) (&ppc64->guest_VSR2, buf, dir, size, mod); break;
223 case 35: VG_(transfer) (&ppc64->guest_VSR3, buf, dir, size, mod); break;
224 case 36: VG_(transfer) (&ppc64->guest_VSR4, buf, dir, size, mod); break;
225 case 37: VG_(transfer) (&ppc64->guest_VSR5, buf, dir, size, mod); break;
226 case 38: VG_(transfer) (&ppc64->guest_VSR6, buf, dir, size, mod); break;
227 case 39: VG_(transfer) (&ppc64->guest_VSR7, buf, dir, size, mod); break;
228 case 40: VG_(transfer) (&ppc64->guest_VSR8, buf, dir, size, mod); break;
229 case 41: VG_(transfer) (&ppc64->guest_VSR9, buf, dir, size, mod); break;
230 case 42: VG_(transfer) (&ppc64->guest_VSR10, buf, dir, size, mod); break;
231 case 43: VG_(transfer) (&ppc64->guest_VSR11, buf, dir, size, mod); break;
232 case 44: VG_(transfer) (&ppc64->guest_VSR12, buf, dir, size, mod); break;
233 case 45: VG_(transfer) (&ppc64->guest_VSR13, buf, dir, size, mod); break;
234 case 46: VG_(transfer) (&ppc64->guest_VSR14, buf, dir, size, mod); break;
235 case 47: VG_(transfer) (&ppc64->guest_VSR15, buf, dir, size, mod); break;
236 case 48: VG_(transfer) (&ppc64->guest_VSR16, buf, dir, size, mod); break;
237 case 49: VG_(transfer) (&ppc64->guest_VSR17, buf, dir, size, mod); break;
238 case 50: VG_(transfer) (&ppc64->guest_VSR18, buf, dir, size, mod); break;
239 case 51: VG_(transfer) (&ppc64->guest_VSR19, buf, dir, size, mod); break;
240 case 52: VG_(transfer) (&ppc64->guest_VSR20, buf, dir, size, mod); break;
241 case 53: VG_(transfer) (&ppc64->guest_VSR21, buf, dir, size, mod); break;
242 case 54: VG_(transfer) (&ppc64->guest_VSR22, buf, dir, size, mod); break;
243 case 55: VG_(transfer) (&ppc64->guest_VSR23, buf, dir, size, mod); break;
244 case 56: VG_(transfer) (&ppc64->guest_VSR24, buf, dir, size, mod); break;
245 case 57: VG_(transfer) (&ppc64->guest_VSR25, buf, dir, size, mod); break;
246 case 58: VG_(transfer) (&ppc64->guest_VSR26, buf, dir, size, mod); break;
247 case 59: VG_(transfer) (&ppc64->guest_VSR27, buf, dir, size, mod); break;
248 case 60: VG_(transfer) (&ppc64->guest_VSR28, buf, dir, size, mod); break;
249 case 61: VG_(transfer) (&ppc64->guest_VSR29, buf, dir, size, mod); break;
250 case 62: VG_(transfer) (&ppc64->guest_VSR30, buf, dir, size, mod); break;
251 case 63: VG_(transfer) (&ppc64->guest_VSR31, buf, dir, size, mod); break;
252 case 64: VG_(transfer) (&ppc64->guest_CIA, buf, dir, size, mod); break;
253 case 65: *mod = False; break; // VEX does not model Machine State Register
254 case 66: {
255 UInt cr = LibVEX_GuestPPC64_get_CR (ppc64);
256 if (dir == valgrind_to_gdbserver) {
257 VG_(transfer) (&cr, buf, dir, size, mod);
258 } else {
259 UInt newcr;
260 VG_(transfer) (&newcr, buf, dir, size, mod);
261 *mod = newcr != cr;
262 LibVEX_GuestPPC64_put_CR (newcr, ppc64);
263 }
264 break;
265 }
266 case 67: VG_(transfer) (&ppc64->guest_LR, buf, dir, size, mod); break;
267 case 68: VG_(transfer) (&ppc64->guest_CTR, buf, dir, size, mod); break;
268 case 69: {
269 UInt xer = LibVEX_GuestPPC64_get_XER (ppc64);
270 if (dir == valgrind_to_gdbserver) {
271 VG_(transfer) (&xer, buf, dir, size, mod);
272 } else {
273 UInt newxer;
274 VG_(transfer) (&newxer, buf, dir, size, mod);
275 *mod = newxer != xer;
276 LibVEX_GuestPPC64_put_XER (newxer, ppc64);
277 }
278 break;
279 }
280 case 70: VG_(transfer) (&ppc64->guest_FPROUND, buf, dir, size, mod); break;
281 case 71: *mod = False; break; // GDBTD???? VEX { "orig_r3", 4448, 64 },
282 case 72: *mod = False; break; // GDBTD???? VEX { "trap", 4512, 64 },
283 case 73: VG_(transfer) (&ppc64->guest_VSR32, buf, dir, size, mod); break;
284 case 74: VG_(transfer) (&ppc64->guest_VSR33, buf, dir, size, mod); break;
285 case 75: VG_(transfer) (&ppc64->guest_VSR34, buf, dir, size, mod); break;
286 case 76: VG_(transfer) (&ppc64->guest_VSR35, buf, dir, size, mod); break;
287 case 77: VG_(transfer) (&ppc64->guest_VSR36, buf, dir, size, mod); break;
288 case 78: VG_(transfer) (&ppc64->guest_VSR37, buf, dir, size, mod); break;
289 case 79: VG_(transfer) (&ppc64->guest_VSR38, buf, dir, size, mod); break;
290 case 80: VG_(transfer) (&ppc64->guest_VSR39, buf, dir, size, mod); break;
291 case 81: VG_(transfer) (&ppc64->guest_VSR40, buf, dir, size, mod); break;
292 case 82: VG_(transfer) (&ppc64->guest_VSR41, buf, dir, size, mod); break;
293 case 83: VG_(transfer) (&ppc64->guest_VSR42, buf, dir, size, mod); break;
294 case 84: VG_(transfer) (&ppc64->guest_VSR43, buf, dir, size, mod); break;
295 case 85: VG_(transfer) (&ppc64->guest_VSR44, buf, dir, size, mod); break;
296 case 86: VG_(transfer) (&ppc64->guest_VSR45, buf, dir, size, mod); break;
297 case 87: VG_(transfer) (&ppc64->guest_VSR46, buf, dir, size, mod); break;
298 case 88: VG_(transfer) (&ppc64->guest_VSR47, buf, dir, size, mod); break;
299 case 89: VG_(transfer) (&ppc64->guest_VSR48, buf, dir, size, mod); break;
300 case 90: VG_(transfer) (&ppc64->guest_VSR49, buf, dir, size, mod); break;
301 case 91: VG_(transfer) (&ppc64->guest_VSR50, buf, dir, size, mod); break;
302 case 92: VG_(transfer) (&ppc64->guest_VSR51, buf, dir, size, mod); break;
303 case 93: VG_(transfer) (&ppc64->guest_VSR52, buf, dir, size, mod); break;
304 case 94: VG_(transfer) (&ppc64->guest_VSR53, buf, dir, size, mod); break;
305 case 95: VG_(transfer) (&ppc64->guest_VSR54, buf, dir, size, mod); break;
306 case 96: VG_(transfer) (&ppc64->guest_VSR55, buf, dir, size, mod); break;
307 case 97: VG_(transfer) (&ppc64->guest_VSR56, buf, dir, size, mod); break;
308 case 98: VG_(transfer) (&ppc64->guest_VSR57, buf, dir, size, mod); break;
309 case 99: VG_(transfer) (&ppc64->guest_VSR58, buf, dir, size, mod); break;
310 case 100: VG_(transfer) (&ppc64->guest_VSR59, buf, dir, size, mod); break;
311 case 101: VG_(transfer) (&ppc64->guest_VSR60, buf, dir, size, mod); break;
312 case 102: VG_(transfer) (&ppc64->guest_VSR61, buf, dir, size, mod); break;
313 case 103: VG_(transfer) (&ppc64->guest_VSR62, buf, dir, size, mod); break;
314 case 104: VG_(transfer) (&ppc64->guest_VSR63, buf, dir, size, mod); break;
315 case 105: VG_(transfer) (&ppc64->guest_VSCR, buf, dir, size, mod); break;
316 case 106: VG_(transfer) (&ppc64->guest_VRSAVE, buf, dir, size, mod); break;
317 default: vg_assert(0);
318 }
319 }
320
321 static
target_xml(Bool shadow_mode)322 const char* target_xml (Bool shadow_mode)
323 {
324 if (shadow_mode) {
325 return "powerpc-altivec64l-valgrind.xml";
326 } else {
327 return "powerpc-altivec64l.xml";
328 }
329 }
330
target_get_dtv(ThreadState * tst)331 static CORE_ADDR** target_get_dtv (ThreadState *tst)
332 {
333 VexGuestPPC64State* ppc64 = (VexGuestPPC64State*)&tst->arch.vex;
334 // ppc64 dtv is located just before the tcb, which is 0x7000 before
335 // the thread id (r13)
336 return (CORE_ADDR**)((CORE_ADDR)ppc64->guest_GPR13
337 - 0x7000 - sizeof(CORE_ADDR));
338 }
339
340 static struct valgrind_target_ops low_target = {
341 num_regs,
342 regs,
343 1, //r1
344 transfer_register,
345 get_pc,
346 set_pc,
347 "ppc64",
348 target_xml,
349 target_get_dtv
350 };
351
ppc64_init_architecture(struct valgrind_target_ops * target)352 void ppc64_init_architecture (struct valgrind_target_ops *target)
353 {
354 *target = low_target;
355 set_register_cache (regs, num_regs);
356 gdbserver_expedite_regs = expedite_regs;
357 }
358