Commit | Line | Data |
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265f716b DJ |
1 | /* GNU/Linux S/390 specific low level interface, for the remote server |
2 | for GDB. | |
b811d2c2 | 3 | Copyright (C) 2001-2020 Free Software Foundation, Inc. |
265f716b DJ |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
265f716b DJ |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
265f716b DJ |
19 | |
20 | /* This file is used for both 31-bit and 64-bit S/390 systems. */ | |
21 | ||
22 | #include "server.h" | |
23 | #include "linux-low.h" | |
c642a434 | 24 | #include "elf/common.h" |
f39e8743 MK |
25 | #include "ax.h" |
26 | #include "tracepoint.h" | |
265f716b DJ |
27 | |
28 | #include <asm/ptrace.h> | |
5826e159 | 29 | #include "nat/gdb_ptrace.h" |
c642a434 | 30 | #include <sys/uio.h> |
7803799a | 31 | #include <elf.h> |
abd9baf9 MK |
32 | #include <inttypes.h> |
33 | ||
34 | #include "linux-s390-tdesc.h" | |
265f716b | 35 | |
7803799a UW |
36 | #ifndef HWCAP_S390_HIGH_GPRS |
37 | #define HWCAP_S390_HIGH_GPRS 512 | |
38 | #endif | |
d05b4ac3 | 39 | |
6682d959 AA |
40 | #ifndef HWCAP_S390_TE |
41 | #define HWCAP_S390_TE 1024 | |
42 | #endif | |
43 | ||
bf2d68ab AA |
44 | #ifndef HWCAP_S390_VX |
45 | #define HWCAP_S390_VX 2048 | |
46 | #endif | |
47 | ||
ad339634 AA |
48 | #ifndef HWCAP_S390_GS |
49 | #define HWCAP_S390_GS 16384 | |
50 | #endif | |
51 | ||
c642a434 | 52 | #define s390_num_regs 52 |
265f716b | 53 | |
ef0478f6 TBA |
54 | /* Linux target op definitions for the S/390 architecture. */ |
55 | ||
56 | class s390_target : public linux_process_target | |
57 | { | |
58 | public: | |
59 | ||
aa8d21c9 TBA |
60 | const regs_info *get_regs_info () override; |
61 | ||
797bcff5 TBA |
62 | protected: |
63 | ||
64 | void low_arch_setup () override; | |
ef0478f6 TBA |
65 | }; |
66 | ||
67 | /* The singleton target ops object. */ | |
68 | ||
69 | static s390_target the_s390_target; | |
70 | ||
2ec06d2e | 71 | static int s390_regmap[] = { |
265f716b DJ |
72 | PT_PSWMASK, PT_PSWADDR, |
73 | ||
74 | PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3, | |
75 | PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7, | |
76 | PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11, | |
77 | PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15, | |
78 | ||
79 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
80 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
81 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
82 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
83 | ||
265f716b DJ |
84 | PT_FPC, |
85 | ||
d0f54f9d | 86 | #ifndef __s390x__ |
265f716b DJ |
87 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, |
88 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, | |
89 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, | |
90 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, | |
91 | #else | |
92 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, | |
93 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, | |
94 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, | |
95 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, | |
96 | #endif | |
c642a434 UW |
97 | |
98 | PT_ORIGGPR2, | |
265f716b DJ |
99 | }; |
100 | ||
c642a434 | 101 | #define s390_num_regs_3264 68 |
7803799a | 102 | |
ab503087 | 103 | #ifdef __s390x__ |
7803799a UW |
104 | static int s390_regmap_3264[] = { |
105 | PT_PSWMASK, PT_PSWADDR, | |
106 | ||
493e2a69 MS |
107 | PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1, |
108 | PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3, | |
109 | PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5, | |
110 | PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7, | |
111 | PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9, | |
112 | PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11, | |
113 | PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13, | |
114 | PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15, | |
7803799a UW |
115 | |
116 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
117 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
118 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
119 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
120 | ||
121 | PT_FPC, | |
122 | ||
123 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, | |
124 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, | |
125 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, | |
126 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, | |
c642a434 UW |
127 | |
128 | PT_ORIGGPR2, | |
7803799a | 129 | }; |
ab503087 MK |
130 | #else |
131 | static int s390_regmap_3264[] = { | |
132 | PT_PSWMASK, PT_PSWADDR, | |
133 | ||
134 | -1, PT_GPR0, -1, PT_GPR1, | |
135 | -1, PT_GPR2, -1, PT_GPR3, | |
136 | -1, PT_GPR4, -1, PT_GPR5, | |
137 | -1, PT_GPR6, -1, PT_GPR7, | |
138 | -1, PT_GPR8, -1, PT_GPR9, | |
139 | -1, PT_GPR10, -1, PT_GPR11, | |
140 | -1, PT_GPR12, -1, PT_GPR13, | |
141 | -1, PT_GPR14, -1, PT_GPR15, | |
142 | ||
143 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
144 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
145 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
146 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
147 | ||
148 | PT_FPC, | |
149 | ||
150 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, | |
151 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, | |
152 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, | |
153 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, | |
154 | ||
155 | PT_ORIGGPR2, | |
156 | }; | |
7803799a UW |
157 | #endif |
158 | ||
159 | ||
2ec06d2e DJ |
160 | static int |
161 | s390_cannot_fetch_register (int regno) | |
265f716b | 162 | { |
265f716b DJ |
163 | return 0; |
164 | } | |
165 | ||
2ec06d2e DJ |
166 | static int |
167 | s390_cannot_store_register (int regno) | |
265f716b | 168 | { |
265f716b DJ |
169 | return 0; |
170 | } | |
2ec06d2e | 171 | |
ee1a7ae4 | 172 | static void |
442ea881 | 173 | s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf) |
ee1a7ae4 | 174 | { |
3aee8918 | 175 | int size = register_size (regcache->tdesc, regno); |
aa8d21c9 | 176 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
ab503087 MK |
177 | struct usrregs_info *usr = regs_info->usrregs; |
178 | int regaddr = usr->regmap[regno]; | |
179 | ||
ee1a7ae4 UW |
180 | if (size < sizeof (long)) |
181 | { | |
182 | memset (buf, 0, sizeof (long)); | |
183 | ||
3aee8918 PA |
184 | if ((regno ^ 1) < usr->num_regs |
185 | && usr->regmap[regno ^ 1] == regaddr) | |
7803799a | 186 | { |
18f5de3b JK |
187 | collect_register (regcache, regno & ~1, buf); |
188 | collect_register (regcache, (regno & ~1) + 1, | |
189 | buf + sizeof (long) - size); | |
7803799a | 190 | } |
d6db1fab UW |
191 | else if (regaddr == PT_PSWMASK) |
192 | { | |
193 | /* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying | |
194 | the basic addressing mode bit from the PSW address. */ | |
3451269c | 195 | gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1)); |
d6db1fab UW |
196 | collect_register (regcache, regno, buf); |
197 | collect_register (regcache, regno ^ 1, addr); | |
198 | buf[1] &= ~0x8; | |
199 | buf[size] |= (addr[0] & 0x80); | |
200 | } | |
201 | else if (regaddr == PT_PSWADDR) | |
202 | { | |
203 | /* Convert 4-byte PSW address to 8 bytes by clearing the addressing | |
204 | mode bit (which gets copied to the PSW mask instead). */ | |
205 | collect_register (regcache, regno, buf + sizeof (long) - size); | |
206 | buf[sizeof (long) - size] &= ~0x80; | |
207 | } | |
c642a434 UW |
208 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
209 | || regaddr == PT_ORIGGPR2) | |
442ea881 | 210 | collect_register (regcache, regno, buf + sizeof (long) - size); |
ee1a7ae4 | 211 | else |
442ea881 | 212 | collect_register (regcache, regno, buf); |
ee1a7ae4 | 213 | } |
ab503087 | 214 | else if (regaddr != -1) |
18f5de3b | 215 | collect_register (regcache, regno, buf); |
ee1a7ae4 UW |
216 | } |
217 | ||
218 | static void | |
493e2a69 MS |
219 | s390_supply_ptrace_register (struct regcache *regcache, |
220 | int regno, const char *buf) | |
ee1a7ae4 | 221 | { |
3aee8918 | 222 | int size = register_size (regcache->tdesc, regno); |
aa8d21c9 | 223 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
ab503087 MK |
224 | struct usrregs_info *usr = regs_info->usrregs; |
225 | int regaddr = usr->regmap[regno]; | |
226 | ||
ee1a7ae4 UW |
227 | if (size < sizeof (long)) |
228 | { | |
3aee8918 PA |
229 | if ((regno ^ 1) < usr->num_regs |
230 | && usr->regmap[regno ^ 1] == regaddr) | |
7803799a | 231 | { |
18f5de3b JK |
232 | supply_register (regcache, regno & ~1, buf); |
233 | supply_register (regcache, (regno & ~1) + 1, | |
234 | buf + sizeof (long) - size); | |
7803799a | 235 | } |
d6db1fab UW |
236 | else if (regaddr == PT_PSWMASK) |
237 | { | |
238 | /* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying | |
239 | the basic addressing mode into the PSW address. */ | |
3451269c PA |
240 | gdb_byte *mask = (gdb_byte *) alloca (size); |
241 | gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1)); | |
d6db1fab UW |
242 | memcpy (mask, buf, size); |
243 | mask[1] |= 0x8; | |
244 | supply_register (regcache, regno, mask); | |
245 | ||
246 | collect_register (regcache, regno ^ 1, addr); | |
247 | addr[0] &= ~0x80; | |
248 | addr[0] |= (buf[size] & 0x80); | |
249 | supply_register (regcache, regno ^ 1, addr); | |
250 | } | |
251 | else if (regaddr == PT_PSWADDR) | |
252 | { | |
253 | /* Convert 8-byte PSW address to 4 bytes by truncating, but | |
254 | keeping the addressing mode bit (which was set from the mask). */ | |
3451269c | 255 | gdb_byte *addr = (gdb_byte *) alloca (size); |
d6db1fab UW |
256 | char amode; |
257 | collect_register (regcache, regno, addr); | |
258 | amode = addr[0] & 0x80; | |
259 | memcpy (addr, buf + sizeof (long) - size, size); | |
260 | addr[0] &= ~0x80; | |
261 | addr[0] |= amode; | |
262 | supply_register (regcache, regno, addr); | |
263 | } | |
c642a434 UW |
264 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
265 | || regaddr == PT_ORIGGPR2) | |
442ea881 | 266 | supply_register (regcache, regno, buf + sizeof (long) - size); |
ee1a7ae4 | 267 | else |
442ea881 | 268 | supply_register (regcache, regno, buf); |
ee1a7ae4 | 269 | } |
ab503087 | 270 | else if (regaddr != -1) |
442ea881 | 271 | supply_register (regcache, regno, buf); |
ee1a7ae4 UW |
272 | } |
273 | ||
b7149293 UW |
274 | /* Provide only a fill function for the general register set. ps_lgetregs |
275 | will use this for NPTL support. */ | |
276 | ||
3aee8918 PA |
277 | static void |
278 | s390_fill_gregset (struct regcache *regcache, void *buf) | |
b7149293 UW |
279 | { |
280 | int i; | |
aa8d21c9 | 281 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
3aee8918 | 282 | struct usrregs_info *usr = regs_info->usrregs; |
b7149293 | 283 | |
3aee8918 | 284 | for (i = 0; i < usr->num_regs; i++) |
7803799a | 285 | { |
3aee8918 PA |
286 | if (usr->regmap[i] < PT_PSWMASK |
287 | || usr->regmap[i] > PT_ACR15) | |
7803799a UW |
288 | continue; |
289 | ||
3aee8918 PA |
290 | s390_collect_ptrace_register (regcache, i, |
291 | (char *) buf + usr->regmap[i]); | |
7803799a | 292 | } |
b7149293 UW |
293 | } |
294 | ||
c642a434 UW |
295 | /* Fill and store functions for extended register sets. */ |
296 | ||
ab503087 MK |
297 | #ifndef __s390x__ |
298 | static void | |
299 | s390_fill_gprs_high (struct regcache *regcache, void *buf) | |
300 | { | |
301 | int r0h = find_regno (regcache->tdesc, "r0h"); | |
302 | int i; | |
303 | ||
304 | for (i = 0; i < 16; i++) | |
305 | collect_register (regcache, r0h + 2 * i, (char *) buf + 4 * i); | |
306 | } | |
307 | ||
308 | static void | |
309 | s390_store_gprs_high (struct regcache *regcache, const void *buf) | |
310 | { | |
311 | int r0h = find_regno (regcache->tdesc, "r0h"); | |
312 | int i; | |
313 | ||
314 | for (i = 0; i < 16; i++) | |
315 | supply_register (regcache, r0h + 2 * i, (const char *) buf + 4 * i); | |
316 | } | |
317 | #endif | |
318 | ||
c642a434 UW |
319 | static void |
320 | s390_store_last_break (struct regcache *regcache, const void *buf) | |
321 | { | |
3aee8918 PA |
322 | const char *p; |
323 | ||
324 | p = (const char *) buf + 8 - register_size (regcache->tdesc, 0); | |
325 | supply_register_by_name (regcache, "last_break", p); | |
c642a434 UW |
326 | } |
327 | ||
328 | static void | |
329 | s390_fill_system_call (struct regcache *regcache, void *buf) | |
330 | { | |
331 | collect_register_by_name (regcache, "system_call", buf); | |
332 | } | |
333 | ||
334 | static void | |
335 | s390_store_system_call (struct regcache *regcache, const void *buf) | |
336 | { | |
337 | supply_register_by_name (regcache, "system_call", buf); | |
338 | } | |
339 | ||
e5a9158d AA |
340 | static void |
341 | s390_store_tdb (struct regcache *regcache, const void *buf) | |
342 | { | |
343 | int tdb0 = find_regno (regcache->tdesc, "tdb0"); | |
344 | int tr0 = find_regno (regcache->tdesc, "tr0"); | |
345 | int i; | |
346 | ||
347 | for (i = 0; i < 4; i++) | |
348 | supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i); | |
349 | ||
350 | for (i = 0; i < 16; i++) | |
351 | supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i)); | |
352 | } | |
353 | ||
bf2d68ab AA |
354 | static void |
355 | s390_fill_vxrs_low (struct regcache *regcache, void *buf) | |
356 | { | |
357 | int v0 = find_regno (regcache->tdesc, "v0l"); | |
358 | int i; | |
359 | ||
360 | for (i = 0; i < 16; i++) | |
361 | collect_register (regcache, v0 + i, (char *) buf + 8 * i); | |
362 | } | |
363 | ||
364 | static void | |
365 | s390_store_vxrs_low (struct regcache *regcache, const void *buf) | |
366 | { | |
367 | int v0 = find_regno (regcache->tdesc, "v0l"); | |
368 | int i; | |
369 | ||
370 | for (i = 0; i < 16; i++) | |
371 | supply_register (regcache, v0 + i, (const char *) buf + 8 * i); | |
372 | } | |
373 | ||
374 | static void | |
375 | s390_fill_vxrs_high (struct regcache *regcache, void *buf) | |
376 | { | |
377 | int v16 = find_regno (regcache->tdesc, "v16"); | |
378 | int i; | |
379 | ||
380 | for (i = 0; i < 16; i++) | |
381 | collect_register (regcache, v16 + i, (char *) buf + 16 * i); | |
382 | } | |
383 | ||
384 | static void | |
385 | s390_store_vxrs_high (struct regcache *regcache, const void *buf) | |
386 | { | |
387 | int v16 = find_regno (regcache->tdesc, "v16"); | |
388 | int i; | |
389 | ||
390 | for (i = 0; i < 16; i++) | |
391 | supply_register (regcache, v16 + i, (const char *) buf + 16 * i); | |
392 | } | |
393 | ||
ad339634 AA |
394 | static void |
395 | s390_store_gs (struct regcache *regcache, const void *buf) | |
396 | { | |
397 | int gsd = find_regno (regcache->tdesc, "gsd"); | |
398 | int i; | |
399 | ||
400 | for (i = 0; i < 3; i++) | |
401 | supply_register (regcache, gsd + i, (const char *) buf + 8 * (i + 1)); | |
402 | } | |
403 | ||
ad339634 AA |
404 | static void |
405 | s390_store_gsbc (struct regcache *regcache, const void *buf) | |
406 | { | |
407 | int bc_gsd = find_regno (regcache->tdesc, "bc_gsd"); | |
408 | int i; | |
409 | ||
410 | for (i = 0; i < 3; i++) | |
411 | supply_register (regcache, bc_gsd + i, (const char *) buf + 8 * (i + 1)); | |
412 | } | |
413 | ||
3aee8918 | 414 | static struct regset_info s390_regsets[] = { |
1570b33e | 415 | { 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL }, |
ab503087 MK |
416 | #ifndef __s390x__ |
417 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_HIGH_GPRS, 0, | |
418 | EXTENDED_REGS, s390_fill_gprs_high, s390_store_gprs_high }, | |
419 | #endif | |
feea5f36 AA |
420 | /* Last break address is read-only; no fill function. */ |
421 | { PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS, | |
422 | NULL, s390_store_last_break }, | |
c642a434 UW |
423 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0, |
424 | EXTENDED_REGS, s390_fill_system_call, s390_store_system_call }, | |
e5a9158d AA |
425 | /* TDB is read-only. */ |
426 | { PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS, | |
427 | NULL, s390_store_tdb }, | |
bf2d68ab AA |
428 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_LOW, 0, |
429 | EXTENDED_REGS, s390_fill_vxrs_low, s390_store_vxrs_low }, | |
430 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_HIGH, 0, | |
431 | EXTENDED_REGS, s390_fill_vxrs_high, s390_store_vxrs_high }, | |
c49bd90b AA |
432 | /* Guarded storage registers are read-only. */ |
433 | { PTRACE_GETREGSET, -1, NT_S390_GS_CB, 0, EXTENDED_REGS, | |
434 | NULL, s390_store_gs }, | |
435 | { PTRACE_GETREGSET, -1, NT_S390_GS_BC, 0, EXTENDED_REGS, | |
436 | NULL, s390_store_gsbc }, | |
50bc912a | 437 | NULL_REGSET |
b7149293 UW |
438 | }; |
439 | ||
b0ded00b | 440 | |
dd373349 | 441 | static const gdb_byte s390_breakpoint[] = { 0, 1 }; |
b0ded00b UW |
442 | #define s390_breakpoint_len 2 |
443 | ||
dd373349 AT |
444 | /* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */ |
445 | ||
446 | static const gdb_byte * | |
447 | s390_sw_breakpoint_from_kind (int kind, int *size) | |
448 | { | |
449 | *size = s390_breakpoint_len; | |
450 | return s390_breakpoint; | |
451 | } | |
452 | ||
b0ded00b | 453 | static CORE_ADDR |
442ea881 | 454 | s390_get_pc (struct regcache *regcache) |
b0ded00b | 455 | { |
3aee8918 | 456 | if (register_size (regcache->tdesc, 0) == 4) |
d61ddec4 | 457 | { |
d6db1fab UW |
458 | unsigned int pswa; |
459 | collect_register_by_name (regcache, "pswa", &pswa); | |
460 | return pswa & 0x7fffffff; | |
d61ddec4 UW |
461 | } |
462 | else | |
463 | { | |
464 | unsigned long pc; | |
442ea881 | 465 | collect_register_by_name (regcache, "pswa", &pc); |
d61ddec4 UW |
466 | return pc; |
467 | } | |
b0ded00b UW |
468 | } |
469 | ||
470 | static void | |
442ea881 | 471 | s390_set_pc (struct regcache *regcache, CORE_ADDR newpc) |
b0ded00b | 472 | { |
3aee8918 | 473 | if (register_size (regcache->tdesc, 0) == 4) |
d61ddec4 | 474 | { |
d6db1fab UW |
475 | unsigned int pswa; |
476 | collect_register_by_name (regcache, "pswa", &pswa); | |
477 | pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff); | |
478 | supply_register_by_name (regcache, "pswa", &pswa); | |
d61ddec4 UW |
479 | } |
480 | else | |
481 | { | |
482 | unsigned long pc = newpc; | |
442ea881 | 483 | supply_register_by_name (regcache, "pswa", &pc); |
d61ddec4 | 484 | } |
b0ded00b UW |
485 | } |
486 | ||
7edb9bd3 AA |
487 | /* Determine the word size for the given PID, in bytes. */ |
488 | ||
489 | #ifdef __s390x__ | |
490 | static int | |
491 | s390_get_wordsize (int pid) | |
492 | { | |
493 | errno = 0; | |
494 | PTRACE_XFER_TYPE pswm = ptrace (PTRACE_PEEKUSER, pid, | |
495 | (PTRACE_TYPE_ARG3) 0, | |
496 | (PTRACE_TYPE_ARG4) 0); | |
f69c5afb AA |
497 | if (errno != 0) |
498 | { | |
422186a9 | 499 | warning (_("Couldn't determine word size, assuming 64-bit.")); |
f69c5afb AA |
500 | return 8; |
501 | } | |
7edb9bd3 AA |
502 | /* Derive word size from extended addressing mode (PSW bit 31). */ |
503 | return pswm & (1L << 32) ? 8 : 4; | |
504 | } | |
505 | #else | |
506 | #define s390_get_wordsize(pid) 4 | |
507 | #endif | |
508 | ||
c642a434 UW |
509 | static int |
510 | s390_check_regset (int pid, int regset, int regsize) | |
511 | { | |
3451269c | 512 | void *buf = alloca (regsize); |
c642a434 UW |
513 | struct iovec iov; |
514 | ||
515 | iov.iov_base = buf; | |
516 | iov.iov_len = regsize; | |
517 | ||
4ac33720 UW |
518 | if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0 |
519 | || errno == ENODATA) | |
c642a434 | 520 | return 1; |
4ac33720 | 521 | return 0; |
c642a434 UW |
522 | } |
523 | ||
3aee8918 PA |
524 | /* For a 31-bit inferior, whether the kernel supports using the full |
525 | 64-bit GPRs. */ | |
526 | static int have_hwcap_s390_high_gprs = 0; | |
abd9baf9 | 527 | static int have_hwcap_s390_vx = 0; |
3aee8918 | 528 | |
797bcff5 TBA |
529 | void |
530 | s390_target::low_arch_setup () | |
d61ddec4 | 531 | { |
3aee8918 | 532 | const struct target_desc *tdesc; |
c642a434 UW |
533 | struct regset_info *regset; |
534 | ||
7edb9bd3 | 535 | /* Determine word size and HWCAP. */ |
0bfdf32f | 536 | int pid = pid_of (current_thread); |
7edb9bd3 | 537 | int wordsize = s390_get_wordsize (pid); |
974c89e0 | 538 | unsigned long hwcap = linux_get_hwcap (wordsize); |
7edb9bd3 AA |
539 | |
540 | /* Check whether the kernel supports extra register sets. */ | |
c642a434 UW |
541 | int have_regset_last_break |
542 | = s390_check_regset (pid, NT_S390_LAST_BREAK, 8); | |
543 | int have_regset_system_call | |
544 | = s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4); | |
7edb9bd3 AA |
545 | int have_regset_tdb |
546 | = (s390_check_regset (pid, NT_S390_TDB, 256) | |
547 | && (hwcap & HWCAP_S390_TE) != 0); | |
548 | int have_regset_vxrs | |
549 | = (s390_check_regset (pid, NT_S390_VXRS_LOW, 128) | |
550 | && s390_check_regset (pid, NT_S390_VXRS_HIGH, 256) | |
551 | && (hwcap & HWCAP_S390_VX) != 0); | |
552 | int have_regset_gs | |
553 | = (s390_check_regset (pid, NT_S390_GS_CB, 32) | |
554 | && s390_check_regset (pid, NT_S390_GS_BC, 32) | |
555 | && (hwcap & HWCAP_S390_GS) != 0); | |
d61ddec4 | 556 | |
d61ddec4 | 557 | { |
ab503087 | 558 | #ifdef __s390x__ |
7edb9bd3 | 559 | if (wordsize == 8) |
c642a434 | 560 | { |
ad339634 AA |
561 | if (have_regset_gs) |
562 | tdesc = tdesc_s390x_gs_linux64; | |
563 | else if (have_regset_vxrs) | |
bf2d68ab AA |
564 | tdesc = (have_regset_tdb ? tdesc_s390x_tevx_linux64 : |
565 | tdesc_s390x_vx_linux64); | |
566 | else if (have_regset_tdb) | |
4ac33720 | 567 | tdesc = tdesc_s390x_te_linux64; |
6682d959 | 568 | else if (have_regset_system_call) |
3aee8918 | 569 | tdesc = tdesc_s390x_linux64v2; |
c642a434 | 570 | else if (have_regset_last_break) |
3aee8918 | 571 | tdesc = tdesc_s390x_linux64v1; |
c642a434 | 572 | else |
3aee8918 | 573 | tdesc = tdesc_s390x_linux64; |
c642a434 | 574 | } |
7803799a UW |
575 | |
576 | /* For a 31-bit inferior, check whether the kernel supports | |
577 | using the full 64-bit GPRs. */ | |
ab503087 MK |
578 | else |
579 | #endif | |
7edb9bd3 | 580 | if (hwcap & HWCAP_S390_HIGH_GPRS) |
7803799a | 581 | { |
3aee8918 | 582 | have_hwcap_s390_high_gprs = 1; |
ad339634 AA |
583 | if (have_regset_gs) |
584 | tdesc = tdesc_s390_gs_linux64; | |
585 | else if (have_regset_vxrs) | |
bf2d68ab AA |
586 | tdesc = (have_regset_tdb ? tdesc_s390_tevx_linux64 : |
587 | tdesc_s390_vx_linux64); | |
588 | else if (have_regset_tdb) | |
4ac33720 UW |
589 | tdesc = tdesc_s390_te_linux64; |
590 | else if (have_regset_system_call) | |
3aee8918 | 591 | tdesc = tdesc_s390_linux64v2; |
c642a434 | 592 | else if (have_regset_last_break) |
3aee8918 | 593 | tdesc = tdesc_s390_linux64v1; |
c642a434 | 594 | else |
3aee8918 | 595 | tdesc = tdesc_s390_linux64; |
7803799a | 596 | } |
7edb9bd3 AA |
597 | else |
598 | { | |
599 | /* Assume 31-bit inferior process. */ | |
600 | if (have_regset_system_call) | |
601 | tdesc = tdesc_s390_linux32v2; | |
602 | else if (have_regset_last_break) | |
603 | tdesc = tdesc_s390_linux32v1; | |
604 | else | |
605 | tdesc = tdesc_s390_linux32; | |
606 | } | |
abd9baf9 MK |
607 | |
608 | have_hwcap_s390_vx = have_regset_vxrs; | |
d61ddec4 | 609 | } |
6682d959 AA |
610 | |
611 | /* Update target_regsets according to available register sets. */ | |
feea5f36 | 612 | for (regset = s390_regsets; regset->size >= 0; regset++) |
6682d959 AA |
613 | if (regset->get_request == PTRACE_GETREGSET) |
614 | switch (regset->nt_type) | |
615 | { | |
ab503087 MK |
616 | #ifndef __s390x__ |
617 | case NT_S390_HIGH_GPRS: | |
618 | regset->size = have_hwcap_s390_high_gprs ? 64 : 0; | |
619 | break; | |
620 | #endif | |
6682d959 | 621 | case NT_S390_LAST_BREAK: |
ab503087 | 622 | regset->size = have_regset_last_break ? 8 : 0; |
6682d959 AA |
623 | break; |
624 | case NT_S390_SYSTEM_CALL: | |
ab503087 | 625 | regset->size = have_regset_system_call ? 4 : 0; |
6682d959 AA |
626 | break; |
627 | case NT_S390_TDB: | |
628 | regset->size = have_regset_tdb ? 256 : 0; | |
bf2d68ab AA |
629 | break; |
630 | case NT_S390_VXRS_LOW: | |
631 | regset->size = have_regset_vxrs ? 128 : 0; | |
632 | break; | |
633 | case NT_S390_VXRS_HIGH: | |
634 | regset->size = have_regset_vxrs ? 256 : 0; | |
635 | break; | |
ad339634 AA |
636 | case NT_S390_GS_CB: |
637 | case NT_S390_GS_BC: | |
638 | regset->size = have_regset_gs ? 32 : 0; | |
6682d959 AA |
639 | default: |
640 | break; | |
641 | } | |
642 | ||
3aee8918 | 643 | current_process ()->tdesc = tdesc; |
d61ddec4 UW |
644 | } |
645 | ||
646 | ||
b0ded00b UW |
647 | static int |
648 | s390_breakpoint_at (CORE_ADDR pc) | |
649 | { | |
650 | unsigned char c[s390_breakpoint_len]; | |
651 | read_inferior_memory (pc, c, s390_breakpoint_len); | |
652 | return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0; | |
653 | } | |
654 | ||
b00b61e1 MK |
655 | /* Breakpoint/Watchpoint support. */ |
656 | ||
657 | /* The "supports_z_point_type" linux_target_ops method. */ | |
658 | ||
659 | static int | |
660 | s390_supports_z_point_type (char z_type) | |
661 | { | |
662 | switch (z_type) | |
663 | { | |
664 | case Z_PACKET_SW_BP: | |
665 | return 1; | |
666 | default: | |
667 | return 0; | |
668 | } | |
669 | } | |
670 | ||
7d00775e AT |
671 | /* Support for hardware single step. */ |
672 | ||
673 | static int | |
674 | s390_supports_hardware_single_step (void) | |
675 | { | |
676 | return 1; | |
677 | } | |
678 | ||
3aee8918 PA |
679 | static struct usrregs_info s390_usrregs_info = |
680 | { | |
681 | s390_num_regs, | |
682 | s390_regmap, | |
683 | }; | |
684 | ||
685 | static struct regsets_info s390_regsets_info = | |
686 | { | |
687 | s390_regsets, /* regsets */ | |
688 | 0, /* num_regsets */ | |
689 | NULL, /* disabled_regsets */ | |
690 | }; | |
691 | ||
aa8d21c9 | 692 | static struct regs_info myregs_info = |
3aee8918 PA |
693 | { |
694 | NULL, /* regset_bitmap */ | |
695 | &s390_usrregs_info, | |
696 | &s390_regsets_info | |
697 | }; | |
698 | ||
3aee8918 PA |
699 | static struct usrregs_info s390_usrregs_info_3264 = |
700 | { | |
701 | s390_num_regs_3264, | |
702 | s390_regmap_3264 | |
703 | }; | |
704 | ||
705 | static struct regsets_info s390_regsets_info_3264 = | |
706 | { | |
707 | s390_regsets, /* regsets */ | |
708 | 0, /* num_regsets */ | |
709 | NULL, /* disabled_regsets */ | |
710 | }; | |
711 | ||
712 | static struct regs_info regs_info_3264 = | |
713 | { | |
714 | NULL, /* regset_bitmap */ | |
715 | &s390_usrregs_info_3264, | |
716 | &s390_regsets_info_3264 | |
717 | }; | |
3aee8918 | 718 | |
aa8d21c9 TBA |
719 | const regs_info * |
720 | s390_target::get_regs_info () | |
3aee8918 | 721 | { |
3aee8918 PA |
722 | if (have_hwcap_s390_high_gprs) |
723 | { | |
ab503087 | 724 | #ifdef __s390x__ |
3aee8918 PA |
725 | const struct target_desc *tdesc = current_process ()->tdesc; |
726 | ||
727 | if (register_size (tdesc, 0) == 4) | |
728 | return ®s_info_3264; | |
ab503087 MK |
729 | #else |
730 | return ®s_info_3264; | |
3aee8918 | 731 | #endif |
ab503087 | 732 | } |
aa8d21c9 | 733 | return &myregs_info; |
3aee8918 | 734 | } |
b0ded00b | 735 | |
a4105d04 MK |
736 | /* The "supports_tracepoints" linux_target_ops method. */ |
737 | ||
738 | static int | |
739 | s390_supports_tracepoints (void) | |
740 | { | |
741 | return 1; | |
742 | } | |
743 | ||
abd9baf9 MK |
744 | /* Implementation of linux_target_ops method "get_thread_area". */ |
745 | ||
746 | static int | |
747 | s390_get_thread_area (int lwpid, CORE_ADDR *addrp) | |
748 | { | |
749 | CORE_ADDR res = ptrace (PTRACE_PEEKUSER, lwpid, (long) PT_ACR0, (long) 0); | |
750 | #ifdef __s390x__ | |
751 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
752 | ||
753 | if (register_size (regcache->tdesc, 0) == 4) | |
754 | res &= 0xffffffffull; | |
755 | #endif | |
756 | *addrp = res; | |
757 | return 0; | |
758 | } | |
759 | ||
760 | ||
761 | /* Fast tracepoint support. | |
762 | ||
763 | The register save area on stack is identical for all targets: | |
764 | ||
765 | 0x000+i*0x10: VR0-VR31 | |
766 | 0x200+i*8: GR0-GR15 | |
767 | 0x280+i*4: AR0-AR15 | |
768 | 0x2c0: PSWM [64-bit] | |
769 | 0x2c8: PSWA [64-bit] | |
770 | 0x2d0: FPC | |
771 | ||
772 | If we're on 31-bit linux, we just don't store the high parts of the GPRs. | |
773 | Likewise, if there's no VX support, we just store the FRs into the slots | |
774 | of low VR halves. The agent code is responsible for rearranging that | |
775 | into regcache. */ | |
776 | ||
777 | /* Code sequence saving GPRs for 31-bit target with no high GPRs. There's | |
778 | one trick used at the very beginning: since there's no way to allocate | |
779 | stack space without destroying CC (lay instruction can do it, but it's | |
780 | only supported on later CPUs), we take 4 different execution paths for | |
781 | every possible value of CC, allocate stack space, save %r0, stuff the | |
782 | CC value in %r0 (shifted to match its position in PSWM high word), | |
783 | then branch to common path. */ | |
784 | ||
785 | static const unsigned char s390_ft_entry_gpr_esa[] = { | |
786 | 0xa7, 0x14, 0x00, 0x1e, /* jo .Lcc3 */ | |
787 | 0xa7, 0x24, 0x00, 0x14, /* jh .Lcc2 */ | |
788 | 0xa7, 0x44, 0x00, 0x0a, /* jl .Lcc1 */ | |
789 | /* CC = 0 */ | |
790 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
791 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
792 | 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */ | |
793 | 0xa7, 0xf4, 0x00, 0x18, /* j .Lccdone */ | |
794 | /* .Lcc1: */ | |
795 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
796 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
797 | 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */ | |
798 | 0xa7, 0xf4, 0x00, 0x10, /* j .Lccdone */ | |
799 | /* .Lcc2: */ | |
800 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
801 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
802 | 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */ | |
803 | 0xa7, 0xf4, 0x00, 0x08, /* j .Lccdone */ | |
804 | /* .Lcc3: */ | |
805 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
806 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
807 | 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */ | |
808 | /* .Lccdone: */ | |
809 | 0x50, 0x10, 0xf2, 0x0c, /* st %r1, 0x20c(%r15) */ | |
810 | 0x50, 0x20, 0xf2, 0x14, /* st %r2, 0x214(%r15) */ | |
811 | 0x50, 0x30, 0xf2, 0x1c, /* st %r3, 0x21c(%r15) */ | |
812 | 0x50, 0x40, 0xf2, 0x24, /* st %r4, 0x224(%r15) */ | |
813 | 0x50, 0x50, 0xf2, 0x2c, /* st %r5, 0x22c(%r15) */ | |
814 | 0x50, 0x60, 0xf2, 0x34, /* st %r6, 0x234(%r15) */ | |
815 | 0x50, 0x70, 0xf2, 0x3c, /* st %r7, 0x23c(%r15) */ | |
816 | 0x50, 0x80, 0xf2, 0x44, /* st %r8, 0x244(%r15) */ | |
817 | 0x50, 0x90, 0xf2, 0x4c, /* st %r9, 0x24c(%r15) */ | |
818 | 0x50, 0xa0, 0xf2, 0x54, /* st %r10, 0x254(%r15) */ | |
819 | 0x50, 0xb0, 0xf2, 0x5c, /* st %r11, 0x25c(%r15) */ | |
820 | 0x50, 0xc0, 0xf2, 0x64, /* st %r12, 0x264(%r15) */ | |
821 | 0x50, 0xd0, 0xf2, 0x6c, /* st %r13, 0x26c(%r15) */ | |
822 | 0x50, 0xe0, 0xf2, 0x74, /* st %r14, 0x274(%r15) */ | |
823 | /* Compute original value of %r15 and store it. We use ahi instead | |
824 | of la to preserve the whole value, and not just the low 31 bits. | |
825 | This is not particularly important here, but essential in the | |
826 | zarch case where someone might be using the high word of %r15 | |
827 | as an extra register. */ | |
828 | 0x18, 0x1f, /* lr %r1, %r15 */ | |
829 | 0xa7, 0x1a, 0x03, 0x00, /* ahi %r1, 0x300 */ | |
830 | 0x50, 0x10, 0xf2, 0x7c, /* st %r1, 0x27c(%r15) */ | |
831 | }; | |
832 | ||
833 | /* Code sequence saving GPRs for 31-bit target with high GPRs and for 64-bit | |
834 | target. Same as above, except this time we can use load/store multiple, | |
835 | since the 64-bit regs are tightly packed. */ | |
836 | ||
837 | static const unsigned char s390_ft_entry_gpr_zarch[] = { | |
838 | 0xa7, 0x14, 0x00, 0x21, /* jo .Lcc3 */ | |
839 | 0xa7, 0x24, 0x00, 0x16, /* jh .Lcc2 */ | |
840 | 0xa7, 0x44, 0x00, 0x0b, /* jl .Lcc1 */ | |
841 | /* CC = 0 */ | |
842 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
843 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
844 | 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */ | |
845 | 0xa7, 0xf4, 0x00, 0x1b, /* j .Lccdone */ | |
846 | /* .Lcc1: */ | |
847 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
848 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
849 | 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */ | |
850 | 0xa7, 0xf4, 0x00, 0x12, /* j .Lccdone */ | |
851 | /* .Lcc2: */ | |
852 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
853 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
854 | 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */ | |
855 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lccdone */ | |
856 | /* .Lcc3: */ | |
857 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
858 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
859 | 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */ | |
860 | /* .Lccdone: */ | |
861 | 0xb9, 0x04, 0x00, 0x1f, /* lgr %r1, %r15 */ | |
862 | 0xa7, 0x1b, 0x03, 0x00, /* aghi %r1, 0x300 */ | |
863 | 0xe3, 0x10, 0xf2, 0x78, 0x00, 0x24, /* stg %r1, 0x278(%r15) */ | |
864 | }; | |
865 | ||
866 | /* Code sequence saving ARs, PSWM and FPC. PSWM has to be assembled from | |
867 | current PSWM (read by epsw) and CC from entry (in %r0). */ | |
868 | ||
869 | static const unsigned char s390_ft_entry_misc[] = { | |
870 | 0x9b, 0x0f, 0xf2, 0x80, /* stam %a0, %a15, 0x20(%%r15) */ | |
871 | 0xb9, 0x8d, 0x00, 0x23, /* epsw %r2, %r3 */ | |
872 | 0xa7, 0x18, 0xcf, 0xff, /* lhi %r1, ~0x3000 */ | |
873 | 0x14, 0x21, /* nr %r2, %r1 */ | |
874 | 0x16, 0x20, /* or %r2, %r0 */ | |
875 | 0x50, 0x20, 0xf2, 0xc0, /* st %r2, 0x2c0(%r15) */ | |
876 | 0x50, 0x30, 0xf2, 0xc4, /* st %r3, 0x2c4(%r15) */ | |
877 | 0xb2, 0x9c, 0xf2, 0xd0, /* stfpc 0x2d0(%r15) */ | |
878 | }; | |
879 | ||
880 | /* Code sequence saving FRs, used if VX not supported. */ | |
881 | ||
882 | static const unsigned char s390_ft_entry_fr[] = { | |
883 | 0x60, 0x00, 0xf0, 0x00, /* std %f0, 0x000(%r15) */ | |
884 | 0x60, 0x10, 0xf0, 0x10, /* std %f1, 0x010(%r15) */ | |
885 | 0x60, 0x20, 0xf0, 0x20, /* std %f2, 0x020(%r15) */ | |
886 | 0x60, 0x30, 0xf0, 0x30, /* std %f3, 0x030(%r15) */ | |
887 | 0x60, 0x40, 0xf0, 0x40, /* std %f4, 0x040(%r15) */ | |
888 | 0x60, 0x50, 0xf0, 0x50, /* std %f5, 0x050(%r15) */ | |
889 | 0x60, 0x60, 0xf0, 0x60, /* std %f6, 0x060(%r15) */ | |
890 | 0x60, 0x70, 0xf0, 0x70, /* std %f7, 0x070(%r15) */ | |
891 | 0x60, 0x80, 0xf0, 0x80, /* std %f8, 0x080(%r15) */ | |
892 | 0x60, 0x90, 0xf0, 0x90, /* std %f9, 0x090(%r15) */ | |
893 | 0x60, 0xa0, 0xf0, 0xa0, /* std %f10, 0x0a0(%r15) */ | |
894 | 0x60, 0xb0, 0xf0, 0xb0, /* std %f11, 0x0b0(%r15) */ | |
895 | 0x60, 0xc0, 0xf0, 0xc0, /* std %f12, 0x0c0(%r15) */ | |
896 | 0x60, 0xd0, 0xf0, 0xd0, /* std %f13, 0x0d0(%r15) */ | |
897 | 0x60, 0xe0, 0xf0, 0xe0, /* std %f14, 0x0e0(%r15) */ | |
898 | 0x60, 0xf0, 0xf0, 0xf0, /* std %f15, 0x0f0(%r15) */ | |
899 | }; | |
900 | ||
901 | /* Code sequence saving VRs, used if VX not supported. */ | |
902 | ||
903 | static const unsigned char s390_ft_entry_vr[] = { | |
904 | 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x3e, /* vstm %v0, %v15, 0x000(%r15) */ | |
905 | 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x3e, /* vstm %v16, %v31, 0x100(%r15) */ | |
906 | }; | |
907 | ||
908 | /* Code sequence doing the collection call for 31-bit target. %r1 contains | |
909 | the address of the literal pool. */ | |
910 | ||
911 | static const unsigned char s390_ft_main_31[] = { | |
912 | /* Load the literals into registers. */ | |
913 | 0x58, 0x50, 0x10, 0x00, /* l %r5, 0x0(%r1) */ | |
914 | 0x58, 0x20, 0x10, 0x04, /* l %r2, 0x4(%r1) */ | |
915 | 0x58, 0x40, 0x10, 0x08, /* l %r4, 0x8(%r1) */ | |
916 | 0x58, 0x60, 0x10, 0x0c, /* l %r6, 0xc(%r1) */ | |
917 | /* Save original PSWA (tracepoint address | 0x80000000). */ | |
918 | 0x50, 0x50, 0xf2, 0xcc, /* st %r5, 0x2cc(%r15) */ | |
919 | /* Construct a collecting_t object at %r15+0x2e0. */ | |
920 | 0x50, 0x20, 0xf2, 0xe0, /* st %r2, 0x2e0(%r15) */ | |
921 | 0x9b, 0x00, 0xf2, 0xe4, /* stam %a0, %a0, 0x2e4(%r15) */ | |
922 | /* Move its address to %r0. */ | |
923 | 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */ | |
924 | /* Take the lock. */ | |
925 | /* .Lloop: */ | |
926 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */ | |
927 | 0xba, 0x10, 0x60, 0x00, /* cs %r1, %r0, 0(%r6) */ | |
928 | 0xa7, 0x74, 0xff, 0xfc, /* jne .Lloop */ | |
929 | /* Address of the register save block to %r3. */ | |
930 | 0x18, 0x3f, /* lr %r3, %r15 */ | |
931 | /* Make a stack frame, so that we can call the collector. */ | |
932 | 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */ | |
933 | /* Call it. */ | |
934 | 0x0d, 0xe4, /* basr %r14, %r4 */ | |
935 | /* And get rid of the stack frame again. */ | |
936 | 0x41, 0xf0, 0xf0, 0x60, /* la %r15, 0x60(%r15) */ | |
937 | /* Leave the lock. */ | |
938 | 0x07, 0xf0, /* br %r0 */ | |
939 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */ | |
940 | 0x50, 0x10, 0x60, 0x00, /* st %t1, 0(%r6) */ | |
941 | }; | |
942 | ||
943 | /* Code sequence doing the collection call for 64-bit target. %r1 contains | |
944 | the address of the literal pool. */ | |
945 | ||
946 | static const unsigned char s390_ft_main_64[] = { | |
947 | /* Load the literals into registers. */ | |
948 | 0xe3, 0x50, 0x10, 0x00, 0x00, 0x04, /* lg %r5, 0x00(%r1) */ | |
949 | 0xe3, 0x20, 0x10, 0x08, 0x00, 0x04, /* lg %r2, 0x08(%r1) */ | |
950 | 0xe3, 0x40, 0x10, 0x10, 0x00, 0x04, /* lg %r4, 0x10(%r1) */ | |
951 | 0xe3, 0x60, 0x10, 0x18, 0x00, 0x04, /* lg %r6, 0x18(%r1) */ | |
952 | /* Save original PSWA (tracepoint address). */ | |
953 | 0xe3, 0x50, 0xf2, 0xc8, 0x00, 0x24, /* stg %r5, 0x2c8(%r15) */ | |
954 | /* Construct a collecting_t object at %r15+0x2e0. */ | |
955 | 0xe3, 0x20, 0xf2, 0xe0, 0x00, 0x24, /* stg %r2, 0x2e0(%r15) */ | |
956 | 0x9b, 0x01, 0xf2, 0xe8, /* stam %a0, %a1, 0x2e8(%r15) */ | |
957 | /* Move its address to %r0. */ | |
958 | 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */ | |
959 | /* Take the lock. */ | |
960 | /* .Lloop: */ | |
961 | 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */ | |
962 | 0xeb, 0x10, 0x60, 0x00, 0x00, 0x30, /* csg %r1, %r0, 0(%r6) */ | |
963 | 0xa7, 0x74, 0xff, 0xfb, /* jne .Lloop */ | |
964 | /* Address of the register save block to %r3. */ | |
965 | 0xb9, 0x04, 0x00, 0x3f, /* lgr %r3, %r15 */ | |
966 | /* Make a stack frame, so that we can call the collector. */ | |
967 | 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */ | |
968 | /* Call it. */ | |
969 | 0x0d, 0xe4, /* basr %r14, %r4 */ | |
970 | /* And get rid of the stack frame again. */ | |
971 | 0x41, 0xf0, 0xf0, 0xa0, /* la %r15, 0xa0(%r15) */ | |
972 | /* Leave the lock. */ | |
973 | 0x07, 0xf0, /* br %r0 */ | |
974 | 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */ | |
975 | 0xe3, 0x10, 0x60, 0x00, 0x00, 0x24, /* stg %t1, 0(%r6) */ | |
976 | }; | |
977 | ||
978 | /* Code sequence restoring FRs, for targets with no VX support. */ | |
979 | ||
980 | static const unsigned char s390_ft_exit_fr[] = { | |
981 | 0x68, 0x00, 0xf0, 0x00, /* ld %f0, 0x000(%r15) */ | |
982 | 0x68, 0x10, 0xf0, 0x10, /* ld %f1, 0x010(%r15) */ | |
983 | 0x68, 0x20, 0xf0, 0x20, /* ld %f2, 0x020(%r15) */ | |
984 | 0x68, 0x30, 0xf0, 0x30, /* ld %f3, 0x030(%r15) */ | |
985 | 0x68, 0x40, 0xf0, 0x40, /* ld %f4, 0x040(%r15) */ | |
986 | 0x68, 0x50, 0xf0, 0x50, /* ld %f5, 0x050(%r15) */ | |
987 | 0x68, 0x60, 0xf0, 0x60, /* ld %f6, 0x060(%r15) */ | |
988 | 0x68, 0x70, 0xf0, 0x70, /* ld %f7, 0x070(%r15) */ | |
989 | 0x68, 0x80, 0xf0, 0x80, /* ld %f8, 0x080(%r15) */ | |
990 | 0x68, 0x90, 0xf0, 0x90, /* ld %f9, 0x090(%r15) */ | |
991 | 0x68, 0xa0, 0xf0, 0xa0, /* ld %f10, 0x0a0(%r15) */ | |
992 | 0x68, 0xb0, 0xf0, 0xb0, /* ld %f11, 0x0b0(%r15) */ | |
993 | 0x68, 0xc0, 0xf0, 0xc0, /* ld %f12, 0x0c0(%r15) */ | |
994 | 0x68, 0xd0, 0xf0, 0xd0, /* ld %f13, 0x0d0(%r15) */ | |
995 | 0x68, 0xe0, 0xf0, 0xe0, /* ld %f14, 0x0e0(%r15) */ | |
996 | 0x68, 0xf0, 0xf0, 0xf0, /* ld %f15, 0x0f0(%r15) */ | |
997 | }; | |
998 | ||
999 | /* Code sequence restoring VRs. */ | |
1000 | ||
1001 | static const unsigned char s390_ft_exit_vr[] = { | |
1002 | 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x36, /* vlm %v0, %v15, 0x000(%r15) */ | |
1003 | 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x36, /* vlm %v16, %v31, 0x100(%r15) */ | |
1004 | }; | |
1005 | ||
1006 | /* Code sequence restoring misc registers. As for PSWM, only CC should be | |
1007 | modified by C code, so we use the alr instruction to restore it by | |
1008 | manufacturing an operand that'll result in the original flags. */ | |
1009 | ||
1010 | static const unsigned char s390_ft_exit_misc[] = { | |
1011 | 0xb2, 0x9d, 0xf2, 0xd0, /* lfpc 0x2d0(%r15) */ | |
1012 | 0x58, 0x00, 0xf2, 0xc0, /* l %r0, 0x2c0(%r15) */ | |
1013 | /* Extract CC to high 2 bits of %r0. */ | |
1014 | 0x88, 0x00, 0x00, 0x0c, /* srl %r0, 12 */ | |
1015 | 0x89, 0x00, 0x00, 0x1e, /* sll %r0, 30 */ | |
1016 | /* Add %r0 to itself. Result will be nonzero iff CC bit 0 is set, and | |
1017 | will have carry iff CC bit 1 is set - resulting in the same flags | |
1018 | as the original. */ | |
1019 | 0x1e, 0x00, /* alr %r0, %r0 */ | |
1020 | 0x9a, 0x0f, 0xf2, 0x80, /* lam %a0, %a15, 0x280(%r15) */ | |
1021 | }; | |
1022 | ||
1023 | /* Code sequence restoring GPRs, for 31-bit targets with no high GPRs. */ | |
1024 | ||
1025 | static const unsigned char s390_ft_exit_gpr_esa[] = { | |
1026 | 0x58, 0x00, 0xf2, 0x04, /* l %r0, 0x204(%r15) */ | |
1027 | 0x58, 0x10, 0xf2, 0x0c, /* l %r1, 0x20c(%r15) */ | |
1028 | 0x58, 0x20, 0xf2, 0x14, /* l %r2, 0x214(%r15) */ | |
1029 | 0x58, 0x30, 0xf2, 0x1c, /* l %r3, 0x21c(%r15) */ | |
1030 | 0x58, 0x40, 0xf2, 0x24, /* l %r4, 0x224(%r15) */ | |
1031 | 0x58, 0x50, 0xf2, 0x2c, /* l %r5, 0x22c(%r15) */ | |
1032 | 0x58, 0x60, 0xf2, 0x34, /* l %r6, 0x234(%r15) */ | |
1033 | 0x58, 0x70, 0xf2, 0x3c, /* l %r7, 0x23c(%r15) */ | |
1034 | 0x58, 0x80, 0xf2, 0x44, /* l %r8, 0x244(%r15) */ | |
1035 | 0x58, 0x90, 0xf2, 0x4c, /* l %r9, 0x24c(%r15) */ | |
1036 | 0x58, 0xa0, 0xf2, 0x54, /* l %r10, 0x254(%r15) */ | |
1037 | 0x58, 0xb0, 0xf2, 0x5c, /* l %r11, 0x25c(%r15) */ | |
1038 | 0x58, 0xc0, 0xf2, 0x64, /* l %r12, 0x264(%r15) */ | |
1039 | 0x58, 0xd0, 0xf2, 0x6c, /* l %r13, 0x26c(%r15) */ | |
1040 | 0x58, 0xe0, 0xf2, 0x74, /* l %r14, 0x274(%r15) */ | |
1041 | 0x58, 0xf0, 0xf2, 0x7c, /* l %r15, 0x27c(%r15) */ | |
1042 | }; | |
1043 | ||
1044 | /* Code sequence restoring GPRs, for 64-bit targets and 31-bit targets | |
1045 | with high GPRs. */ | |
1046 | ||
1047 | static const unsigned char s390_ft_exit_gpr_zarch[] = { | |
1048 | 0xeb, 0x0f, 0xf2, 0x00, 0x00, 0x04, /* lmg %r0, %r15, 0x200(%r15) */ | |
1049 | }; | |
1050 | ||
1051 | /* Writes instructions to target, updating the to pointer. */ | |
1052 | ||
1053 | static void | |
1054 | append_insns (CORE_ADDR *to, size_t len, const unsigned char *buf) | |
1055 | { | |
4196ab2a | 1056 | target_write_memory (*to, buf, len); |
abd9baf9 MK |
1057 | *to += len; |
1058 | } | |
1059 | ||
1060 | /* Relocates an instruction from oldloc to *to, updating to. */ | |
1061 | ||
1062 | static int | |
1063 | s390_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc, int is_64) | |
1064 | { | |
1065 | gdb_byte buf[6]; | |
1066 | int ilen; | |
1067 | int op2; | |
1068 | /* 0: no fixup, 1: PC16DBL fixup, 2: PC32DBL fixup. */ | |
1069 | int mode = 0; | |
1070 | int is_bras = 0; | |
1071 | read_inferior_memory (oldloc, buf, sizeof buf); | |
1072 | if (buf[0] < 0x40) | |
1073 | ilen = 2; | |
1074 | else if (buf[0] < 0xc0) | |
1075 | ilen = 4; | |
1076 | else | |
1077 | ilen = 6; | |
1078 | switch (buf[0]) | |
1079 | { | |
1080 | case 0x05: /* BALR */ | |
1081 | case 0x0c: /* BASSM */ | |
1082 | case 0x0d: /* BASR */ | |
1083 | case 0x45: /* BAL */ | |
1084 | case 0x4d: /* BAS */ | |
1085 | /* These save a return address and mess around with registers. | |
1086 | We can't relocate them. */ | |
1087 | return 1; | |
1088 | case 0x84: /* BRXH */ | |
1089 | case 0x85: /* BRXLE */ | |
1090 | mode = 1; | |
1091 | break; | |
1092 | case 0xa7: | |
1093 | op2 = buf[1] & 0xf; | |
1094 | /* BRC, BRAS, BRCT, BRCTG */ | |
1095 | if (op2 >= 4 && op2 <= 7) | |
1096 | mode = 1; | |
1097 | /* BRAS */ | |
1098 | if (op2 == 5) | |
1099 | is_bras = 1; | |
1100 | break; | |
1101 | case 0xc0: | |
1102 | op2 = buf[1] & 0xf; | |
1103 | /* LARL, BRCL, BRASL */ | |
1104 | if (op2 == 0 || op2 == 4 || op2 == 5) | |
1105 | mode = 2; | |
1106 | /* BRASL */ | |
1107 | if (op2 == 5) | |
1108 | is_bras = 1; | |
1109 | break; | |
1110 | case 0xc4: | |
1111 | case 0xc6: | |
1112 | /* PC-relative addressing instructions. */ | |
1113 | mode = 2; | |
1114 | break; | |
1115 | case 0xc5: /* BPRP */ | |
1116 | case 0xc7: /* BPP */ | |
1117 | /* Branch prediction - just skip it. */ | |
1118 | return 0; | |
1119 | case 0xcc: | |
1120 | op2 = buf[1] & 0xf; | |
1121 | /* BRCTH */ | |
1122 | if (op2 == 6) | |
1123 | mode = 2; | |
1124 | break; | |
1125 | case 0xec: | |
1126 | op2 = buf[5]; | |
1127 | switch (op2) | |
1128 | { | |
1129 | case 0x44: /* BRXHG */ | |
1130 | case 0x45: /* BRXLG */ | |
1131 | case 0x64: /* CGRJ */ | |
1132 | case 0x65: /* CLGRJ */ | |
1133 | case 0x76: /* CRJ */ | |
1134 | case 0x77: /* CLRJ */ | |
1135 | mode = 1; | |
1136 | break; | |
1137 | } | |
1138 | break; | |
1139 | } | |
1140 | ||
1141 | if (mode != 0) | |
1142 | { | |
1143 | /* We'll have to relocate an instruction with a PC-relative field. | |
1144 | First, compute the target. */ | |
1145 | int64_t loffset = 0; | |
1146 | CORE_ADDR target; | |
1147 | if (mode == 1) | |
1148 | { | |
1149 | int16_t soffset = 0; | |
1150 | memcpy (&soffset, buf + 2, 2); | |
1151 | loffset = soffset; | |
1152 | } | |
1153 | else if (mode == 2) | |
1154 | { | |
1155 | int32_t soffset = 0; | |
1156 | memcpy (&soffset, buf + 2, 4); | |
1157 | loffset = soffset; | |
1158 | } | |
1159 | target = oldloc + loffset * 2; | |
1160 | if (!is_64) | |
1161 | target &= 0x7fffffff; | |
1162 | ||
1163 | if (is_bras) | |
1164 | { | |
1165 | /* BRAS or BRASL was used. We cannot just relocate those, since | |
1166 | they save the return address in a register. We can, however, | |
1167 | replace them with a LARL+JG sequence. */ | |
1168 | ||
1169 | /* Make the LARL. */ | |
1170 | int32_t soffset; | |
1171 | buf[0] = 0xc0; | |
1172 | buf[1] &= 0xf0; | |
1173 | loffset = oldloc + ilen - *to; | |
1174 | loffset >>= 1; | |
1175 | soffset = loffset; | |
1176 | if (soffset != loffset && is_64) | |
1177 | return 1; | |
1178 | memcpy (buf + 2, &soffset, 4); | |
1179 | append_insns (to, 6, buf); | |
1180 | ||
1181 | /* Note: this is not fully correct. In 31-bit mode, LARL will write | |
1182 | an address with the top bit 0, while BRAS/BRASL will write it | |
1183 | with top bit 1. It should not matter much, since linux compilers | |
1184 | use BR and not BSM to return from functions, but it could confuse | |
1185 | some poor stack unwinder. */ | |
1186 | ||
1187 | /* We'll now be writing a JG. */ | |
1188 | mode = 2; | |
1189 | buf[0] = 0xc0; | |
1190 | buf[1] = 0xf4; | |
1191 | ilen = 6; | |
1192 | } | |
1193 | ||
1194 | /* Compute the new offset and write it to the buffer. */ | |
1195 | loffset = target - *to; | |
1196 | loffset >>= 1; | |
1197 | ||
1198 | if (mode == 1) | |
1199 | { | |
1200 | int16_t soffset = loffset; | |
1201 | if (soffset != loffset) | |
1202 | return 1; | |
1203 | memcpy (buf + 2, &soffset, 2); | |
1204 | } | |
1205 | else if (mode == 2) | |
1206 | { | |
1207 | int32_t soffset = loffset; | |
1208 | if (soffset != loffset && is_64) | |
1209 | return 1; | |
1210 | memcpy (buf + 2, &soffset, 4); | |
1211 | } | |
1212 | } | |
1213 | append_insns (to, ilen, buf); | |
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | /* Implementation of linux_target_ops method | |
1218 | "install_fast_tracepoint_jump_pad". */ | |
1219 | ||
1220 | static int | |
1221 | s390_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint, | |
1222 | CORE_ADDR tpaddr, | |
1223 | CORE_ADDR collector, | |
1224 | CORE_ADDR lockaddr, | |
1225 | ULONGEST orig_size, | |
1226 | CORE_ADDR *jump_entry, | |
1227 | CORE_ADDR *trampoline, | |
1228 | ULONGEST *trampoline_size, | |
1229 | unsigned char *jjump_pad_insn, | |
1230 | ULONGEST *jjump_pad_insn_size, | |
1231 | CORE_ADDR *adjusted_insn_addr, | |
1232 | CORE_ADDR *adjusted_insn_addr_end, | |
1233 | char *err) | |
1234 | { | |
1235 | int i; | |
1236 | int64_t loffset; | |
1237 | int32_t offset; | |
1238 | unsigned char jbuf[6] = { 0xc0, 0xf4, 0, 0, 0, 0 }; /* jg ... */ | |
1239 | CORE_ADDR buildaddr = *jump_entry; | |
1240 | #ifdef __s390x__ | |
1241 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
1242 | int is_64 = register_size (regcache->tdesc, 0) == 8; | |
1243 | int is_zarch = is_64 || have_hwcap_s390_high_gprs; | |
1244 | int has_vx = have_hwcap_s390_vx; | |
1245 | #else | |
1246 | int is_64 = 0, is_zarch = 0, has_vx = 0; | |
1247 | #endif | |
1248 | CORE_ADDR literals[4] = { | |
1249 | tpaddr, | |
1250 | tpoint, | |
1251 | collector, | |
1252 | lockaddr, | |
1253 | }; | |
1254 | ||
1255 | /* First, store the GPRs. */ | |
1256 | if (is_zarch) | |
1257 | append_insns (&buildaddr, sizeof s390_ft_entry_gpr_zarch, | |
1258 | s390_ft_entry_gpr_zarch); | |
1259 | else | |
1260 | append_insns (&buildaddr, sizeof s390_ft_entry_gpr_esa, | |
1261 | s390_ft_entry_gpr_esa); | |
1262 | ||
1263 | /* Second, misc registers (ARs, PSWM, FPC). PSWA will be stored below. */ | |
1264 | append_insns (&buildaddr, sizeof s390_ft_entry_misc, s390_ft_entry_misc); | |
1265 | ||
1266 | /* Third, FRs or VRs. */ | |
1267 | if (has_vx) | |
1268 | append_insns (&buildaddr, sizeof s390_ft_entry_vr, s390_ft_entry_vr); | |
1269 | else | |
1270 | append_insns (&buildaddr, sizeof s390_ft_entry_fr, s390_ft_entry_fr); | |
1271 | ||
1272 | /* Now, the main part of code - store PSWA, take lock, call collector, | |
1273 | leave lock. First, we'll need to fetch 4 literals. */ | |
1274 | if (is_64) { | |
1275 | unsigned char buf[] = { | |
1276 | 0x07, 0x07, /* nopr %r7 */ | |
1277 | 0x07, 0x07, /* nopr %r7 */ | |
1278 | 0x07, 0x07, /* nopr %r7 */ | |
1279 | 0xa7, 0x15, 0x00, 0x12, /* bras %r1, .Lend */ | |
1280 | 0, 0, 0, 0, 0, 0, 0, 0, /* tpaddr */ | |
1281 | 0, 0, 0, 0, 0, 0, 0, 0, /* tpoint */ | |
1282 | 0, 0, 0, 0, 0, 0, 0, 0, /* collector */ | |
1283 | 0, 0, 0, 0, 0, 0, 0, 0, /* lockaddr */ | |
1284 | /* .Lend: */ | |
1285 | }; | |
1286 | /* Find the proper start place in buf, so that literals will be | |
1287 | aligned. */ | |
1288 | int bufpos = (buildaddr + 2) & 7; | |
1289 | /* Stuff the literals into the buffer. */ | |
1290 | for (i = 0; i < 4; i++) { | |
1291 | uint64_t lit = literals[i]; | |
1292 | memcpy (&buf[sizeof buf - 32 + i * 8], &lit, 8); | |
1293 | } | |
1294 | append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos); | |
1295 | append_insns (&buildaddr, sizeof s390_ft_main_64, s390_ft_main_64); | |
1296 | } else { | |
1297 | unsigned char buf[] = { | |
1298 | 0x07, 0x07, /* nopr %r7 */ | |
1299 | 0xa7, 0x15, 0x00, 0x0a, /* bras %r1, .Lend */ | |
1300 | 0, 0, 0, 0, /* tpaddr */ | |
1301 | 0, 0, 0, 0, /* tpoint */ | |
1302 | 0, 0, 0, 0, /* collector */ | |
1303 | 0, 0, 0, 0, /* lockaddr */ | |
1304 | /* .Lend: */ | |
1305 | }; | |
1306 | /* Find the proper start place in buf, so that literals will be | |
1307 | aligned. */ | |
1308 | int bufpos = (buildaddr + 2) & 3; | |
1309 | /* First literal will be saved as the PSWA, make sure it has the high bit | |
1310 | set. */ | |
1311 | literals[0] |= 0x80000000; | |
1312 | /* Stuff the literals into the buffer. */ | |
1313 | for (i = 0; i < 4; i++) { | |
1314 | uint32_t lit = literals[i]; | |
1315 | memcpy (&buf[sizeof buf - 16 + i * 4], &lit, 4); | |
1316 | } | |
1317 | append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos); | |
1318 | append_insns (&buildaddr, sizeof s390_ft_main_31, s390_ft_main_31); | |
1319 | } | |
1320 | ||
1321 | /* Restore FRs or VRs. */ | |
1322 | if (has_vx) | |
1323 | append_insns (&buildaddr, sizeof s390_ft_exit_vr, s390_ft_exit_vr); | |
1324 | else | |
1325 | append_insns (&buildaddr, sizeof s390_ft_exit_fr, s390_ft_exit_fr); | |
1326 | ||
1327 | /* Restore misc registers. */ | |
1328 | append_insns (&buildaddr, sizeof s390_ft_exit_misc, s390_ft_exit_misc); | |
1329 | ||
1330 | /* Restore the GPRs. */ | |
1331 | if (is_zarch) | |
1332 | append_insns (&buildaddr, sizeof s390_ft_exit_gpr_zarch, | |
1333 | s390_ft_exit_gpr_zarch); | |
1334 | else | |
1335 | append_insns (&buildaddr, sizeof s390_ft_exit_gpr_esa, | |
1336 | s390_ft_exit_gpr_esa); | |
1337 | ||
1338 | /* Now, adjust the original instruction to execute in the jump | |
1339 | pad. */ | |
1340 | *adjusted_insn_addr = buildaddr; | |
1341 | if (s390_relocate_instruction (&buildaddr, tpaddr, is_64)) | |
1342 | { | |
1343 | sprintf (err, "E.Could not relocate instruction for tracepoint."); | |
1344 | return 1; | |
1345 | } | |
1346 | *adjusted_insn_addr_end = buildaddr; | |
1347 | ||
1348 | /* Finally, write a jump back to the program. */ | |
1349 | ||
1350 | loffset = (tpaddr + orig_size) - buildaddr; | |
1351 | loffset >>= 1; | |
1352 | offset = loffset; | |
1353 | if (is_64 && offset != loffset) | |
1354 | { | |
1355 | sprintf (err, | |
1356 | "E.Jump back from jump pad too far from tracepoint " | |
1357 | "(offset 0x%" PRIx64 " > int33).", loffset); | |
1358 | return 1; | |
1359 | } | |
1360 | memcpy (jbuf + 2, &offset, 4); | |
1361 | append_insns (&buildaddr, sizeof jbuf, jbuf); | |
1362 | ||
1363 | /* The jump pad is now built. Wire in a jump to our jump pad. This | |
1364 | is always done last (by our caller actually), so that we can | |
1365 | install fast tracepoints with threads running. This relies on | |
1366 | the agent's atomic write support. */ | |
1367 | loffset = *jump_entry - tpaddr; | |
1368 | loffset >>= 1; | |
1369 | offset = loffset; | |
1370 | if (is_64 && offset != loffset) | |
1371 | { | |
1372 | sprintf (err, | |
1373 | "E.Jump back from jump pad too far from tracepoint " | |
1374 | "(offset 0x%" PRIx64 " > int33).", loffset); | |
1375 | return 1; | |
1376 | } | |
1377 | memcpy (jbuf + 2, &offset, 4); | |
1378 | memcpy (jjump_pad_insn, jbuf, sizeof jbuf); | |
1379 | *jjump_pad_insn_size = sizeof jbuf; | |
1380 | ||
1381 | /* Return the end address of our pad. */ | |
1382 | *jump_entry = buildaddr; | |
1383 | ||
1384 | return 0; | |
1385 | } | |
1386 | ||
1387 | /* Implementation of linux_target_ops method | |
1388 | "get_min_fast_tracepoint_insn_len". */ | |
1389 | ||
1390 | static int | |
1391 | s390_get_min_fast_tracepoint_insn_len (void) | |
1392 | { | |
1393 | /* We only support using 6-byte jumps to reach the tracepoint code. | |
1394 | If the tracepoint buffer were allocated sufficiently close (64kiB) | |
1395 | to the executable code, and the traced instruction itself was close | |
1396 | enough to the beginning, we could use 4-byte jumps, but this doesn't | |
1397 | seem to be worth the effort. */ | |
1398 | return 6; | |
1399 | } | |
1400 | ||
1401 | /* Implementation of linux_target_ops method "get_ipa_tdesc_idx". */ | |
1402 | ||
1403 | static int | |
1404 | s390_get_ipa_tdesc_idx (void) | |
1405 | { | |
1406 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
1407 | const struct target_desc *tdesc = regcache->tdesc; | |
1408 | ||
1409 | #ifdef __s390x__ | |
1410 | if (tdesc == tdesc_s390x_linux64) | |
1411 | return S390_TDESC_64; | |
1412 | if (tdesc == tdesc_s390x_linux64v1) | |
1413 | return S390_TDESC_64V1; | |
1414 | if (tdesc == tdesc_s390x_linux64v2) | |
1415 | return S390_TDESC_64V2; | |
1416 | if (tdesc == tdesc_s390x_te_linux64) | |
1417 | return S390_TDESC_TE; | |
1418 | if (tdesc == tdesc_s390x_vx_linux64) | |
1419 | return S390_TDESC_VX; | |
1420 | if (tdesc == tdesc_s390x_tevx_linux64) | |
1421 | return S390_TDESC_TEVX; | |
ce29f843 AA |
1422 | if (tdesc == tdesc_s390x_gs_linux64) |
1423 | return S390_TDESC_GS; | |
abd9baf9 MK |
1424 | #endif |
1425 | ||
1426 | if (tdesc == tdesc_s390_linux32) | |
1427 | return S390_TDESC_32; | |
1428 | if (tdesc == tdesc_s390_linux32v1) | |
1429 | return S390_TDESC_32V1; | |
1430 | if (tdesc == tdesc_s390_linux32v2) | |
1431 | return S390_TDESC_32V2; | |
1432 | if (tdesc == tdesc_s390_linux64) | |
1433 | return S390_TDESC_64; | |
1434 | if (tdesc == tdesc_s390_linux64v1) | |
1435 | return S390_TDESC_64V1; | |
1436 | if (tdesc == tdesc_s390_linux64v2) | |
1437 | return S390_TDESC_64V2; | |
1438 | if (tdesc == tdesc_s390_te_linux64) | |
1439 | return S390_TDESC_TE; | |
1440 | if (tdesc == tdesc_s390_vx_linux64) | |
1441 | return S390_TDESC_VX; | |
1442 | if (tdesc == tdesc_s390_tevx_linux64) | |
1443 | return S390_TDESC_TEVX; | |
ce29f843 AA |
1444 | if (tdesc == tdesc_s390_gs_linux64) |
1445 | return S390_TDESC_GS; | |
abd9baf9 MK |
1446 | |
1447 | return 0; | |
1448 | } | |
1449 | ||
f39e8743 MK |
1450 | /* Appends given buffer to current_insn_ptr in the target. */ |
1451 | ||
1452 | static void | |
1453 | add_insns (const unsigned char *start, int len) | |
1454 | { | |
1455 | CORE_ADDR buildaddr = current_insn_ptr; | |
1456 | ||
1457 | if (debug_threads) | |
1458 | debug_printf ("Adding %d bytes of insn at %s\n", | |
1459 | len, paddress (buildaddr)); | |
1460 | ||
1461 | append_insns (&buildaddr, len, start); | |
1462 | current_insn_ptr = buildaddr; | |
1463 | } | |
1464 | ||
1465 | /* Register usage in emit: | |
1466 | ||
1467 | - %r0, %r1: temp | |
1468 | - %r2: top of stack (high word for 31-bit) | |
1469 | - %r3: low word of top of stack (for 31-bit) | |
1470 | - %r4, %r5: temp | |
1471 | - %r6, %r7, %r8: don't use | |
1472 | - %r9: saved arg1 | |
1473 | - %r10: saved arg2 | |
1474 | - %r11: frame pointer | |
1475 | - %r12: saved top of stack for void_call_2 (high word for 31-bit) | |
1476 | - %r13: low word of saved top of stack (for 31-bit) | |
1477 | - %r14: return address for calls | |
1478 | - %r15: stack pointer | |
1479 | ||
1480 | */ | |
1481 | ||
1482 | /* The "emit_prologue" emit_ops method for s390. */ | |
1483 | ||
1484 | static void | |
1485 | s390_emit_prologue (void) | |
1486 | { | |
1487 | static const unsigned char buf[] = { | |
1488 | 0x90, 0x9f, 0xf0, 0x24, /* stm %r9, %r15, 0x24(%r15) */ | |
1489 | 0x18, 0x92, /* lr %r9, %r2 */ | |
1490 | 0x18, 0xa3, /* lr %r10, %r3 */ | |
1491 | 0x18, 0xbf, /* lr %r11, %r15 */ | |
1492 | }; | |
1493 | add_insns (buf, sizeof buf); | |
1494 | } | |
1495 | ||
1496 | /* The "emit_epilogue" emit_ops method for s390. */ | |
1497 | ||
1498 | static void | |
1499 | s390_emit_epilogue (void) | |
1500 | { | |
1501 | static const unsigned char buf[] = { | |
1502 | 0x90, 0x23, 0xa0, 0x00, /* stm %r2, %r3, 0(%r10) */ | |
1503 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1504 | 0x98, 0x9f, 0xb0, 0x24, /* lm %r9, %r15, 0x24(%r11) */ | |
1505 | 0x07, 0xfe, /* br %r14 */ | |
1506 | }; | |
1507 | add_insns (buf, sizeof buf); | |
1508 | } | |
1509 | ||
1510 | /* The "emit_add" emit_ops method for s390. */ | |
1511 | ||
1512 | static void | |
1513 | s390_emit_add (void) | |
1514 | { | |
1515 | static const unsigned char buf[] = { | |
1516 | 0x5e, 0x30, 0xf0, 0x04, /* al %r3, 4(%r15) */ | |
1517 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x98, /* al %r2, 0(%r15) */ | |
1518 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1519 | }; | |
1520 | add_insns (buf, sizeof buf); | |
1521 | } | |
1522 | ||
1523 | /* The "emit_sub" emit_ops method for s390. */ | |
1524 | ||
1525 | static void | |
1526 | s390_emit_sub (void) | |
1527 | { | |
1528 | static const unsigned char buf[] = { | |
1529 | 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */ | |
1530 | 0x1f, 0x53, /* slr %r5, %r3 */ | |
1531 | 0xb9, 0x99, 0x00, 0x42, /* slbr %r4, %r2 */ | |
1532 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1533 | 0x18, 0x35, /* lr %r3, %r5 */ | |
1534 | 0x18, 0x24, /* lr %r2, %r4 */ | |
1535 | }; | |
1536 | add_insns (buf, sizeof buf); | |
1537 | } | |
1538 | ||
1539 | /* The "emit_mul" emit_ops method for s390. */ | |
1540 | ||
1541 | static void | |
1542 | s390_emit_mul (void) | |
1543 | { | |
1544 | emit_error = 1; | |
1545 | } | |
1546 | ||
1547 | /* The "emit_lsh" emit_ops method for s390. */ | |
1548 | ||
1549 | static void | |
1550 | s390_emit_lsh (void) | |
1551 | { | |
1552 | static const unsigned char buf[] = { | |
1553 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1554 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1555 | 0x8d, 0x20, 0x40, 0x00, /* sldl %r2, 0(%r4) */ | |
1556 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1557 | }; | |
1558 | add_insns (buf, sizeof buf); | |
1559 | } | |
1560 | ||
1561 | /* The "emit_rsh_signed" emit_ops method for s390. */ | |
1562 | ||
1563 | static void | |
1564 | s390_emit_rsh_signed (void) | |
1565 | { | |
1566 | static const unsigned char buf[] = { | |
1567 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1568 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1569 | 0x8e, 0x20, 0x40, 0x00, /* srda %r2, 0(%r4) */ | |
1570 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1571 | }; | |
1572 | add_insns (buf, sizeof buf); | |
1573 | } | |
1574 | ||
1575 | /* The "emit_rsh_unsigned" emit_ops method for s390. */ | |
1576 | ||
1577 | static void | |
1578 | s390_emit_rsh_unsigned (void) | |
1579 | { | |
1580 | static const unsigned char buf[] = { | |
1581 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1582 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1583 | 0x8c, 0x20, 0x40, 0x00, /* srdl %r2, 0(%r4) */ | |
1584 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1585 | }; | |
1586 | add_insns (buf, sizeof buf); | |
1587 | } | |
1588 | ||
1589 | /* The "emit_ext" emit_ops method for s390. */ | |
1590 | ||
1591 | static void | |
1592 | s390_emit_ext (int arg) | |
1593 | { | |
1594 | unsigned char buf[] = { | |
b4f183d2 TT |
1595 | 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */ |
1596 | 0x8e, 0x20, 0x00, (unsigned char) (64 - arg), /* srda %r2, <64-arg> */ | |
f39e8743 MK |
1597 | }; |
1598 | add_insns (buf, sizeof buf); | |
1599 | } | |
1600 | ||
1601 | /* The "emit_log_not" emit_ops method for s390. */ | |
1602 | ||
1603 | static void | |
1604 | s390_emit_log_not (void) | |
1605 | { | |
1606 | static const unsigned char buf[] = { | |
1607 | 0x16, 0x23, /* or %r2, %r3 */ | |
1608 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1609 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1610 | 0xa7, 0x74, 0x00, 0x04, /* jne .Lskip */ | |
1611 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1612 | /* .Lskip: */ | |
1613 | }; | |
1614 | add_insns (buf, sizeof buf); | |
1615 | } | |
1616 | ||
1617 | /* The "emit_bit_and" emit_ops method for s390. */ | |
1618 | ||
1619 | static void | |
1620 | s390_emit_bit_and (void) | |
1621 | { | |
1622 | static const unsigned char buf[] = { | |
1623 | 0x54, 0x20, 0xf0, 0x00, /* n %r2, 0(%r15) */ | |
1624 | 0x54, 0x30, 0xf0, 0x04, /* n %r3, 4(%r15) */ | |
1625 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1626 | }; | |
1627 | add_insns (buf, sizeof buf); | |
1628 | } | |
1629 | ||
1630 | /* The "emit_bit_or" emit_ops method for s390. */ | |
1631 | ||
1632 | static void | |
1633 | s390_emit_bit_or (void) | |
1634 | { | |
1635 | static const unsigned char buf[] = { | |
1636 | 0x56, 0x20, 0xf0, 0x00, /* o %r2, 0(%r15) */ | |
1637 | 0x56, 0x30, 0xf0, 0x04, /* o %r3, 4(%r15) */ | |
1638 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1639 | }; | |
1640 | add_insns (buf, sizeof buf); | |
1641 | } | |
1642 | ||
1643 | /* The "emit_bit_xor" emit_ops method for s390. */ | |
1644 | ||
1645 | static void | |
1646 | s390_emit_bit_xor (void) | |
1647 | { | |
1648 | static const unsigned char buf[] = { | |
1649 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
1650 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
1651 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1652 | }; | |
1653 | add_insns (buf, sizeof buf); | |
1654 | } | |
1655 | ||
1656 | /* The "emit_bit_not" emit_ops method for s390. */ | |
1657 | ||
1658 | static void | |
1659 | s390_emit_bit_not (void) | |
1660 | { | |
1661 | static const unsigned char buf[] = { | |
1662 | 0xa7, 0x48, 0xff, 0xff, /* lhi %r4, -1 */ | |
1663 | 0x17, 0x24, /* xr %r2, %r4 */ | |
1664 | 0x17, 0x34, /* xr %r3, %r4 */ | |
1665 | }; | |
1666 | add_insns (buf, sizeof buf); | |
1667 | } | |
1668 | ||
1669 | /* The "emit_equal" emit_ops method for s390. */ | |
1670 | ||
1671 | static void | |
1672 | s390_emit_equal (void) | |
1673 | { | |
1674 | s390_emit_bit_xor (); | |
1675 | s390_emit_log_not (); | |
1676 | } | |
1677 | ||
1678 | /* The "emit_less_signed" emit_ops method for s390. */ | |
1679 | ||
1680 | static void | |
1681 | s390_emit_less_signed (void) | |
1682 | { | |
1683 | static const unsigned char buf[] = { | |
1684 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
1685 | 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */ | |
1686 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */ | |
1687 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
1688 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */ | |
1689 | /* .Lhigh: */ | |
1690 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1691 | 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */ | |
1692 | /* .Lless: */ | |
1693 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1694 | /* .Lend: */ | |
1695 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1696 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1697 | }; | |
1698 | add_insns (buf, sizeof buf); | |
1699 | } | |
1700 | ||
1701 | /* The "emit_less_unsigned" emit_ops method for s390. */ | |
1702 | ||
1703 | static void | |
1704 | s390_emit_less_unsigned (void) | |
1705 | { | |
1706 | static const unsigned char buf[] = { | |
1707 | 0x55, 0x20, 0xf0, 0x00, /* cl %r2, 0(%r15) */ | |
1708 | 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */ | |
1709 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */ | |
1710 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
1711 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */ | |
1712 | /* .Lhigh: */ | |
1713 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1714 | 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */ | |
1715 | /* .Lless: */ | |
1716 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1717 | /* .Lend: */ | |
1718 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1719 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1720 | }; | |
1721 | add_insns (buf, sizeof buf); | |
1722 | } | |
1723 | ||
1724 | /* The "emit_ref" emit_ops method for s390. */ | |
1725 | ||
1726 | static void | |
1727 | s390_emit_ref (int size) | |
1728 | { | |
1729 | static const unsigned char buf1[] = { | |
1730 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1731 | 0x43, 0x30, 0x30, 0x00, /* ic %r3, 0(%r3) */ | |
1732 | }; | |
1733 | static const unsigned char buf2[] = { | |
1734 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1735 | 0x48, 0x30, 0x30, 0x00, /* lh %r3, 0(%r3) */ | |
1736 | }; | |
1737 | static const unsigned char buf4[] = { | |
1738 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1739 | 0x58, 0x30, 0x30, 0x00, /* l %r3, 0(%r3) */ | |
1740 | }; | |
1741 | static const unsigned char buf8[] = { | |
1742 | 0x98, 0x23, 0x30, 0x00, /* lm %r2, %r3, 0(%r3) */ | |
1743 | }; | |
1744 | switch (size) | |
1745 | { | |
1746 | case 1: | |
1747 | add_insns (buf1, sizeof buf1); | |
1748 | break; | |
1749 | case 2: | |
1750 | add_insns (buf2, sizeof buf2); | |
1751 | break; | |
1752 | case 4: | |
1753 | add_insns (buf4, sizeof buf4); | |
1754 | break; | |
1755 | case 8: | |
1756 | add_insns (buf8, sizeof buf8); | |
1757 | break; | |
1758 | default: | |
1759 | emit_error = 1; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | /* The "emit_if_goto" emit_ops method for s390. */ | |
1764 | ||
1765 | static void | |
1766 | s390_emit_if_goto (int *offset_p, int *size_p) | |
1767 | { | |
1768 | static const unsigned char buf[] = { | |
1769 | 0x16, 0x23, /* or %r2, %r3 */ | |
1770 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1771 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1772 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00 /* jgne <fillme> */ | |
1773 | }; | |
1774 | add_insns (buf, sizeof buf); | |
1775 | if (offset_p) | |
1776 | *offset_p = 12; | |
1777 | if (size_p) | |
1778 | *size_p = 4; | |
1779 | } | |
1780 | ||
1781 | /* The "emit_goto" emit_ops method for s390 and s390x. */ | |
1782 | ||
1783 | static void | |
1784 | s390_emit_goto (int *offset_p, int *size_p) | |
1785 | { | |
1786 | static const unsigned char buf[] = { | |
1787 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
1788 | }; | |
1789 | add_insns (buf, sizeof buf); | |
1790 | if (offset_p) | |
1791 | *offset_p = 2; | |
1792 | if (size_p) | |
1793 | *size_p = 4; | |
1794 | } | |
1795 | ||
1796 | /* The "write_goto_address" emit_ops method for s390 and s390x. */ | |
1797 | ||
1798 | static void | |
1799 | s390_write_goto_address (CORE_ADDR from, CORE_ADDR to, int size) | |
1800 | { | |
1801 | long diff = ((long) (to - (from - 2))) / 2; | |
1802 | int sdiff = diff; | |
1803 | unsigned char buf[sizeof sdiff]; | |
1804 | ||
1805 | /* We're only doing 4-byte sizes at the moment. */ | |
1806 | if (size != sizeof sdiff || sdiff != diff) | |
1807 | { | |
1808 | emit_error = 1; | |
1809 | return; | |
1810 | } | |
1811 | ||
1812 | memcpy (buf, &sdiff, sizeof sdiff); | |
4196ab2a | 1813 | target_write_memory (from, buf, sizeof sdiff); |
f39e8743 MK |
1814 | } |
1815 | ||
1816 | /* Preparation for emitting a literal pool of given size. Loads the address | |
1817 | of the pool into %r1, and jumps over it. Called should emit the pool data | |
1818 | immediately afterwards. Used for both s390 and s390x. */ | |
1819 | ||
1820 | static void | |
1821 | s390_emit_litpool (int size) | |
1822 | { | |
1823 | static const unsigned char nop[] = { | |
1824 | 0x07, 0x07, | |
1825 | }; | |
1826 | unsigned char buf[] = { | |
b4f183d2 TT |
1827 | 0xa7, 0x15, 0x00, |
1828 | (unsigned char) ((size + 4) / 2), /* bras %r1, .Lend+size */ | |
f39e8743 MK |
1829 | /* .Lend: */ |
1830 | }; | |
1831 | if (size == 4) | |
1832 | { | |
1833 | /* buf needs to start at even halfword for litpool to be aligned */ | |
1834 | if (current_insn_ptr & 2) | |
1835 | add_insns (nop, sizeof nop); | |
1836 | } | |
1837 | else | |
1838 | { | |
1839 | while ((current_insn_ptr & 6) != 4) | |
1840 | add_insns (nop, sizeof nop); | |
1841 | } | |
1842 | add_insns (buf, sizeof buf); | |
1843 | } | |
1844 | ||
1845 | /* The "emit_const" emit_ops method for s390. */ | |
1846 | ||
1847 | static void | |
1848 | s390_emit_const (LONGEST num) | |
1849 | { | |
1850 | unsigned long long n = num; | |
1851 | unsigned char buf_s[] = { | |
b4f183d2 TT |
1852 | /* lhi %r3, <num> */ |
1853 | 0xa7, 0x38, | |
1854 | (unsigned char) (num >> 8), (unsigned char) num, | |
1855 | /* xr %r2, %r2 */ | |
1856 | 0x17, 0x22, | |
f39e8743 MK |
1857 | }; |
1858 | static const unsigned char buf_l[] = { | |
1859 | 0x98, 0x23, 0x10, 0x00, /* lm %r2, %r3, 0(%r1) */ | |
1860 | }; | |
1861 | if (num < 0x8000 && num >= 0) | |
1862 | { | |
1863 | add_insns (buf_s, sizeof buf_s); | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | s390_emit_litpool (8); | |
1868 | add_insns ((unsigned char *) &n, sizeof n); | |
1869 | add_insns (buf_l, sizeof buf_l); | |
1870 | } | |
1871 | } | |
1872 | ||
1873 | /* The "emit_call" emit_ops method for s390. */ | |
1874 | ||
1875 | static void | |
1876 | s390_emit_call (CORE_ADDR fn) | |
1877 | { | |
1878 | unsigned int n = fn; | |
1879 | static const unsigned char buf[] = { | |
1880 | 0x58, 0x10, 0x10, 0x00, /* l %r1, 0(%r1) */ | |
1881 | 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */ | |
1882 | 0x0d, 0xe1, /* basr %r14, %r1 */ | |
1883 | 0xa7, 0xfa, 0x00, 0x60, /* ahi %r15, 0x60 */ | |
1884 | }; | |
1885 | s390_emit_litpool (4); | |
1886 | add_insns ((unsigned char *) &n, sizeof n); | |
1887 | add_insns (buf, sizeof buf); | |
1888 | } | |
1889 | ||
1890 | /* The "emit_reg" emit_ops method for s390. */ | |
1891 | ||
1892 | static void | |
1893 | s390_emit_reg (int reg) | |
1894 | { | |
1895 | unsigned char bufpre[] = { | |
b4f183d2 TT |
1896 | /* lr %r2, %r9 */ |
1897 | 0x18, 0x29, | |
1898 | /* lhi %r3, <reg> */ | |
1899 | 0xa7, 0x38, (unsigned char) (reg >> 8), (unsigned char) reg, | |
f39e8743 MK |
1900 | }; |
1901 | add_insns (bufpre, sizeof bufpre); | |
1902 | s390_emit_call (get_raw_reg_func_addr ()); | |
1903 | } | |
1904 | ||
1905 | /* The "emit_pop" emit_ops method for s390. */ | |
1906 | ||
1907 | static void | |
1908 | s390_emit_pop (void) | |
1909 | { | |
1910 | static const unsigned char buf[] = { | |
1911 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1912 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1913 | }; | |
1914 | add_insns (buf, sizeof buf); | |
1915 | } | |
1916 | ||
1917 | /* The "emit_stack_flush" emit_ops method for s390. */ | |
1918 | ||
1919 | static void | |
1920 | s390_emit_stack_flush (void) | |
1921 | { | |
1922 | static const unsigned char buf[] = { | |
1923 | 0xa7, 0xfa, 0xff, 0xf8, /* ahi %r15, -8 */ | |
1924 | 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */ | |
1925 | }; | |
1926 | add_insns (buf, sizeof buf); | |
1927 | } | |
1928 | ||
1929 | /* The "emit_zero_ext" emit_ops method for s390. */ | |
1930 | ||
1931 | static void | |
1932 | s390_emit_zero_ext (int arg) | |
1933 | { | |
1934 | unsigned char buf[] = { | |
b4f183d2 TT |
1935 | 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */ |
1936 | 0x8c, 0x20, 0x00, (unsigned char) (64 - arg), /* srdl %r2, <64-arg> */ | |
f39e8743 MK |
1937 | }; |
1938 | add_insns (buf, sizeof buf); | |
1939 | } | |
1940 | ||
1941 | /* The "emit_swap" emit_ops method for s390. */ | |
1942 | ||
1943 | static void | |
1944 | s390_emit_swap (void) | |
1945 | { | |
1946 | static const unsigned char buf[] = { | |
1947 | 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */ | |
1948 | 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */ | |
1949 | 0x18, 0x24, /* lr %r2, %r4 */ | |
1950 | 0x18, 0x35, /* lr %r3, %r5 */ | |
1951 | }; | |
1952 | add_insns (buf, sizeof buf); | |
1953 | } | |
1954 | ||
1955 | /* The "emit_stack_adjust" emit_ops method for s390. */ | |
1956 | ||
1957 | static void | |
1958 | s390_emit_stack_adjust (int n) | |
1959 | { | |
1960 | unsigned char buf[] = { | |
b4f183d2 TT |
1961 | /* ahi %r15, 8*n */ |
1962 | 0xa7, 0xfa, | |
1963 | (unsigned char ) (n * 8 >> 8), (unsigned char) (n * 8), | |
f39e8743 MK |
1964 | }; |
1965 | add_insns (buf, sizeof buf); | |
1966 | } | |
1967 | ||
1968 | /* Sets %r2 to a 32-bit constant. */ | |
1969 | ||
1970 | static void | |
1971 | s390_emit_set_r2 (int arg1) | |
1972 | { | |
1973 | unsigned char buf_s[] = { | |
b4f183d2 TT |
1974 | /* lhi %r2, <arg1> */ |
1975 | 0xa7, 0x28, (unsigned char) (arg1 >> 8), (unsigned char) arg1, | |
f39e8743 MK |
1976 | }; |
1977 | static const unsigned char buf_l[] = { | |
1978 | 0x58, 0x20, 0x10, 0x00, /* l %r2, 0(%r1) */ | |
1979 | }; | |
1980 | if (arg1 < 0x8000 && arg1 >= -0x8000) | |
1981 | { | |
1982 | add_insns (buf_s, sizeof buf_s); | |
1983 | } | |
1984 | else | |
1985 | { | |
1986 | s390_emit_litpool (4); | |
1987 | add_insns ((unsigned char *) &arg1, sizeof arg1); | |
1988 | add_insns (buf_l, sizeof buf_l); | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | /* The "emit_int_call_1" emit_ops method for s390. */ | |
1993 | ||
1994 | static void | |
1995 | s390_emit_int_call_1 (CORE_ADDR fn, int arg1) | |
1996 | { | |
1997 | /* FN's prototype is `LONGEST(*fn)(int)'. */ | |
1998 | s390_emit_set_r2 (arg1); | |
1999 | s390_emit_call (fn); | |
2000 | } | |
2001 | ||
2002 | /* The "emit_void_call_2" emit_ops method for s390. */ | |
2003 | ||
2004 | static void | |
2005 | s390_emit_void_call_2 (CORE_ADDR fn, int arg1) | |
2006 | { | |
2007 | /* FN's prototype is `void(*fn)(int,LONGEST)'. */ | |
2008 | static const unsigned char buf[] = { | |
2009 | 0x18, 0xc2, /* lr %r12, %r2 */ | |
2010 | 0x18, 0xd3, /* lr %r13, %r3 */ | |
2011 | 0x18, 0x43, /* lr %r4, %r3 */ | |
2012 | 0x18, 0x32, /* lr %r3, %r2 */ | |
2013 | }; | |
2014 | static const unsigned char buf2[] = { | |
2015 | 0x18, 0x2c, /* lr %r2, %r12 */ | |
2016 | 0x18, 0x3d, /* lr %r3, %r13 */ | |
2017 | }; | |
2018 | add_insns (buf, sizeof buf); | |
2019 | s390_emit_set_r2 (arg1); | |
2020 | s390_emit_call (fn); | |
2021 | add_insns (buf2, sizeof buf2); | |
2022 | } | |
2023 | ||
2024 | /* The "emit_eq_goto" emit_ops method for s390. */ | |
2025 | ||
782c1122 | 2026 | static void |
f39e8743 MK |
2027 | s390_emit_eq_goto (int *offset_p, int *size_p) |
2028 | { | |
2029 | static const unsigned char buf[] = { | |
2030 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
2031 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
2032 | 0x16, 0x23, /* or %r2, %r3 */ | |
2033 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2034 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2035 | 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */ | |
2036 | }; | |
2037 | add_insns (buf, sizeof buf); | |
2038 | if (offset_p) | |
2039 | *offset_p = 20; | |
2040 | if (size_p) | |
2041 | *size_p = 4; | |
2042 | } | |
2043 | ||
2044 | /* The "emit_ne_goto" emit_ops method for s390. */ | |
2045 | ||
782c1122 | 2046 | static void |
f39e8743 MK |
2047 | s390_emit_ne_goto (int *offset_p, int *size_p) |
2048 | { | |
2049 | static const unsigned char buf[] = { | |
2050 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
2051 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
2052 | 0x16, 0x23, /* or %r2, %r3 */ | |
2053 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2054 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2055 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2056 | }; | |
2057 | add_insns (buf, sizeof buf); | |
2058 | if (offset_p) | |
2059 | *offset_p = 20; | |
2060 | if (size_p) | |
2061 | *size_p = 4; | |
2062 | } | |
2063 | ||
2064 | /* The "emit_lt_goto" emit_ops method for s390. */ | |
2065 | ||
782c1122 | 2066 | static void |
f39e8743 MK |
2067 | s390_emit_lt_goto (int *offset_p, int *size_p) |
2068 | { | |
2069 | static const unsigned char buf[] = { | |
2070 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2071 | 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */ | |
2072 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */ | |
2073 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2074 | 0xa7, 0x24, 0x00, 0x08, /* jh .Ltrue */ | |
2075 | /* .Lfalse: */ | |
2076 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2077 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2078 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2079 | /* .Ltrue: */ | |
2080 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2081 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2082 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2083 | /* .Lend: */ | |
2084 | }; | |
2085 | add_insns (buf, sizeof buf); | |
2086 | if (offset_p) | |
2087 | *offset_p = 42; | |
2088 | if (size_p) | |
2089 | *size_p = 4; | |
2090 | } | |
2091 | ||
2092 | /* The "emit_le_goto" emit_ops method for s390. */ | |
2093 | ||
782c1122 | 2094 | static void |
f39e8743 MK |
2095 | s390_emit_le_goto (int *offset_p, int *size_p) |
2096 | { | |
2097 | static const unsigned char buf[] = { | |
2098 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2099 | 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */ | |
2100 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */ | |
2101 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2102 | 0xa7, 0xa4, 0x00, 0x08, /* jhe .Ltrue */ | |
2103 | /* .Lfalse: */ | |
2104 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2105 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2106 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2107 | /* .Ltrue: */ | |
2108 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2109 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2110 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2111 | /* .Lend: */ | |
2112 | }; | |
2113 | add_insns (buf, sizeof buf); | |
2114 | if (offset_p) | |
2115 | *offset_p = 42; | |
2116 | if (size_p) | |
2117 | *size_p = 4; | |
2118 | } | |
2119 | ||
2120 | /* The "emit_gt_goto" emit_ops method for s390. */ | |
2121 | ||
782c1122 | 2122 | static void |
f39e8743 MK |
2123 | s390_emit_gt_goto (int *offset_p, int *size_p) |
2124 | { | |
2125 | static const unsigned char buf[] = { | |
2126 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2127 | 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */ | |
2128 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */ | |
2129 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2130 | 0xa7, 0x44, 0x00, 0x08, /* jl .Ltrue */ | |
2131 | /* .Lfalse: */ | |
2132 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2133 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2134 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2135 | /* .Ltrue: */ | |
2136 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2137 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2138 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2139 | /* .Lend: */ | |
2140 | }; | |
2141 | add_insns (buf, sizeof buf); | |
2142 | if (offset_p) | |
2143 | *offset_p = 42; | |
2144 | if (size_p) | |
2145 | *size_p = 4; | |
2146 | } | |
2147 | ||
2148 | /* The "emit_ge_goto" emit_ops method for s390. */ | |
2149 | ||
782c1122 | 2150 | static void |
f39e8743 MK |
2151 | s390_emit_ge_goto (int *offset_p, int *size_p) |
2152 | { | |
2153 | static const unsigned char buf[] = { | |
2154 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2155 | 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */ | |
2156 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */ | |
2157 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2158 | 0xa7, 0xc4, 0x00, 0x08, /* jle .Ltrue */ | |
2159 | /* .Lfalse: */ | |
2160 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2161 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2162 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2163 | /* .Ltrue: */ | |
2164 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2165 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2166 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2167 | /* .Lend: */ | |
2168 | }; | |
2169 | add_insns (buf, sizeof buf); | |
2170 | if (offset_p) | |
2171 | *offset_p = 42; | |
2172 | if (size_p) | |
2173 | *size_p = 4; | |
2174 | } | |
2175 | ||
2176 | /* The "emit_ops" structure for s390. Named _impl to avoid name | |
2177 | collision with s390_emit_ops function. */ | |
2178 | ||
782c1122 | 2179 | static struct emit_ops s390_emit_ops_impl = |
f39e8743 MK |
2180 | { |
2181 | s390_emit_prologue, | |
2182 | s390_emit_epilogue, | |
2183 | s390_emit_add, | |
2184 | s390_emit_sub, | |
2185 | s390_emit_mul, | |
2186 | s390_emit_lsh, | |
2187 | s390_emit_rsh_signed, | |
2188 | s390_emit_rsh_unsigned, | |
2189 | s390_emit_ext, | |
2190 | s390_emit_log_not, | |
2191 | s390_emit_bit_and, | |
2192 | s390_emit_bit_or, | |
2193 | s390_emit_bit_xor, | |
2194 | s390_emit_bit_not, | |
2195 | s390_emit_equal, | |
2196 | s390_emit_less_signed, | |
2197 | s390_emit_less_unsigned, | |
2198 | s390_emit_ref, | |
2199 | s390_emit_if_goto, | |
2200 | s390_emit_goto, | |
2201 | s390_write_goto_address, | |
2202 | s390_emit_const, | |
2203 | s390_emit_call, | |
2204 | s390_emit_reg, | |
2205 | s390_emit_pop, | |
2206 | s390_emit_stack_flush, | |
2207 | s390_emit_zero_ext, | |
2208 | s390_emit_swap, | |
2209 | s390_emit_stack_adjust, | |
2210 | s390_emit_int_call_1, | |
2211 | s390_emit_void_call_2, | |
2212 | s390_emit_eq_goto, | |
2213 | s390_emit_ne_goto, | |
2214 | s390_emit_lt_goto, | |
2215 | s390_emit_le_goto, | |
2216 | s390_emit_gt_goto, | |
2217 | s390_emit_ge_goto | |
2218 | }; | |
2219 | ||
2220 | #ifdef __s390x__ | |
2221 | ||
2222 | /* The "emit_prologue" emit_ops method for s390x. */ | |
2223 | ||
2224 | static void | |
2225 | s390x_emit_prologue (void) | |
2226 | { | |
2227 | static const unsigned char buf[] = { | |
2228 | 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x24, /* stmg %r9, %r15, 0x48(%r15) */ | |
2229 | 0xb9, 0x04, 0x00, 0x92, /* lgr %r9, %r2 */ | |
2230 | 0xb9, 0x04, 0x00, 0xa3, /* lgr %r10, %r3 */ | |
2231 | 0xb9, 0x04, 0x00, 0xbf, /* lgr %r11, %r15 */ | |
2232 | }; | |
2233 | add_insns (buf, sizeof buf); | |
2234 | } | |
2235 | ||
2236 | /* The "emit_epilogue" emit_ops method for s390x. */ | |
2237 | ||
2238 | static void | |
2239 | s390x_emit_epilogue (void) | |
2240 | { | |
2241 | static const unsigned char buf[] = { | |
2242 | 0xe3, 0x20, 0xa0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r10) */ | |
2243 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2244 | 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x04, /* lmg %r9, %r15, 0x48(%r15) */ | |
2245 | 0x07, 0xfe, /* br %r14 */ | |
2246 | }; | |
2247 | add_insns (buf, sizeof buf); | |
2248 | } | |
2249 | ||
2250 | /* The "emit_add" emit_ops method for s390x. */ | |
2251 | ||
2252 | static void | |
2253 | s390x_emit_add (void) | |
2254 | { | |
2255 | static const unsigned char buf[] = { | |
2256 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x0a, /* alg %r2, 0(%r15) */ | |
2257 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2258 | }; | |
2259 | add_insns (buf, sizeof buf); | |
2260 | } | |
2261 | ||
2262 | /* The "emit_sub" emit_ops method for s390x. */ | |
2263 | ||
2264 | static void | |
2265 | s390x_emit_sub (void) | |
2266 | { | |
2267 | static const unsigned char buf[] = { | |
2268 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2269 | 0xb9, 0x0b, 0x00, 0x32, /* slgr %r3, %r2 */ | |
2270 | 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */ | |
2271 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2272 | }; | |
2273 | add_insns (buf, sizeof buf); | |
2274 | } | |
2275 | ||
2276 | /* The "emit_mul" emit_ops method for s390x. */ | |
2277 | ||
2278 | static void | |
2279 | s390x_emit_mul (void) | |
2280 | { | |
2281 | emit_error = 1; | |
2282 | } | |
2283 | ||
2284 | /* The "emit_lsh" emit_ops method for s390x. */ | |
2285 | ||
2286 | static void | |
2287 | s390x_emit_lsh (void) | |
2288 | { | |
2289 | static const unsigned char buf[] = { | |
2290 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2291 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0d, /* sllg %r2, %r3, 0(%r2) */ | |
2292 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2293 | }; | |
2294 | add_insns (buf, sizeof buf); | |
2295 | } | |
2296 | ||
2297 | /* The "emit_rsh_signed" emit_ops method for s390x. */ | |
2298 | ||
2299 | static void | |
2300 | s390x_emit_rsh_signed (void) | |
2301 | { | |
2302 | static const unsigned char buf[] = { | |
2303 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2304 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0a, /* srag %r2, %r3, 0(%r2) */ | |
2305 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2306 | }; | |
2307 | add_insns (buf, sizeof buf); | |
2308 | } | |
2309 | ||
2310 | /* The "emit_rsh_unsigned" emit_ops method for s390x. */ | |
2311 | ||
2312 | static void | |
2313 | s390x_emit_rsh_unsigned (void) | |
2314 | { | |
2315 | static const unsigned char buf[] = { | |
2316 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2317 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0c, /* srlg %r2, %r3, 0(%r2) */ | |
2318 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2319 | }; | |
2320 | add_insns (buf, sizeof buf); | |
2321 | } | |
2322 | ||
2323 | /* The "emit_ext" emit_ops method for s390x. */ | |
2324 | ||
2325 | static void | |
2326 | s390x_emit_ext (int arg) | |
2327 | { | |
2328 | unsigned char buf[] = { | |
b4f183d2 TT |
2329 | /* sllg %r2, %r2, <64-arg> */ |
2330 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d, | |
2331 | /* srag %r2, %r2, <64-arg> */ | |
2332 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0a, | |
f39e8743 MK |
2333 | }; |
2334 | add_insns (buf, sizeof buf); | |
2335 | } | |
2336 | ||
2337 | /* The "emit_log_not" emit_ops method for s390x. */ | |
2338 | ||
2339 | static void | |
2340 | s390x_emit_log_not (void) | |
2341 | { | |
2342 | static const unsigned char buf[] = { | |
2343 | 0xb9, 0x00, 0x00, 0x22, /* lpgr %r2, %r2 */ | |
2344 | 0xa7, 0x2b, 0xff, 0xff, /* aghi %r2, -1 */ | |
2345 | 0xeb, 0x22, 0x00, 0x3f, 0x00, 0x0c, /* srlg %r2, %r2, 63 */ | |
2346 | }; | |
2347 | add_insns (buf, sizeof buf); | |
2348 | } | |
2349 | ||
2350 | /* The "emit_bit_and" emit_ops method for s390x. */ | |
2351 | ||
2352 | static void | |
2353 | s390x_emit_bit_and (void) | |
2354 | { | |
2355 | static const unsigned char buf[] = { | |
2356 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x80, /* ng %r2, 0(%r15) */ | |
2357 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2358 | }; | |
2359 | add_insns (buf, sizeof buf); | |
2360 | } | |
2361 | ||
2362 | /* The "emit_bit_or" emit_ops method for s390x. */ | |
2363 | ||
2364 | static void | |
2365 | s390x_emit_bit_or (void) | |
2366 | { | |
2367 | static const unsigned char buf[] = { | |
2368 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x81, /* og %r2, 0(%r15) */ | |
2369 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2370 | }; | |
2371 | add_insns (buf, sizeof buf); | |
2372 | } | |
2373 | ||
2374 | /* The "emit_bit_xor" emit_ops method for s390x. */ | |
2375 | ||
2376 | static void | |
2377 | s390x_emit_bit_xor (void) | |
2378 | { | |
2379 | static const unsigned char buf[] = { | |
2380 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x82, /* xg %r2, 0(%r15) */ | |
2381 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2382 | }; | |
2383 | add_insns (buf, sizeof buf); | |
2384 | } | |
2385 | ||
2386 | /* The "emit_bit_not" emit_ops method for s390x. */ | |
2387 | ||
2388 | static void | |
2389 | s390x_emit_bit_not (void) | |
2390 | { | |
2391 | static const unsigned char buf[] = { | |
2392 | 0xa7, 0x39, 0xff, 0xff, /* lghi %r3, -1 */ | |
2393 | 0xb9, 0x82, 0x00, 0x23, /* xgr %r2, %r3 */ | |
2394 | }; | |
2395 | add_insns (buf, sizeof buf); | |
2396 | } | |
2397 | ||
2398 | /* The "emit_equal" emit_ops method for s390x. */ | |
2399 | ||
2400 | static void | |
2401 | s390x_emit_equal (void) | |
2402 | { | |
2403 | s390x_emit_bit_xor (); | |
2404 | s390x_emit_log_not (); | |
2405 | } | |
2406 | ||
2407 | /* The "emit_less_signed" emit_ops method for s390x. */ | |
2408 | ||
2409 | static void | |
2410 | s390x_emit_less_signed (void) | |
2411 | { | |
2412 | static const unsigned char buf[] = { | |
2413 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2414 | 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */ | |
2415 | 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */ | |
2416 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2417 | /* .Lend: */ | |
2418 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2419 | }; | |
2420 | add_insns (buf, sizeof buf); | |
2421 | } | |
2422 | ||
2423 | /* The "emit_less_unsigned" emit_ops method for s390x. */ | |
2424 | ||
2425 | static void | |
2426 | s390x_emit_less_unsigned (void) | |
2427 | { | |
2428 | static const unsigned char buf[] = { | |
2429 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x21, /* clg %r2, 0(%r15) */ | |
2430 | 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */ | |
2431 | 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */ | |
2432 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2433 | /* .Lend: */ | |
2434 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2435 | }; | |
2436 | add_insns (buf, sizeof buf); | |
2437 | } | |
2438 | ||
2439 | /* The "emit_ref" emit_ops method for s390x. */ | |
2440 | ||
2441 | static void | |
2442 | s390x_emit_ref (int size) | |
2443 | { | |
2444 | static const unsigned char buf1[] = { | |
2445 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x90, /* llgc %r2, 0(%r2) */ | |
2446 | }; | |
2447 | static const unsigned char buf2[] = { | |
2448 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x91 /* llgh %r2, 0(%r2) */ | |
2449 | }; | |
2450 | static const unsigned char buf4[] = { | |
2451 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x16, /* llgf %r2, 0(%r2) */ | |
2452 | }; | |
2453 | static const unsigned char buf8[] = { | |
2454 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x04, /* lg %r2, 0(%r2) */ | |
2455 | }; | |
2456 | switch (size) | |
2457 | { | |
2458 | case 1: | |
2459 | add_insns (buf1, sizeof buf1); | |
2460 | break; | |
2461 | case 2: | |
2462 | add_insns (buf2, sizeof buf2); | |
2463 | break; | |
2464 | case 4: | |
2465 | add_insns (buf4, sizeof buf4); | |
2466 | break; | |
2467 | case 8: | |
2468 | add_insns (buf8, sizeof buf8); | |
2469 | break; | |
2470 | default: | |
2471 | emit_error = 1; | |
2472 | } | |
2473 | } | |
2474 | ||
2475 | /* The "emit_if_goto" emit_ops method for s390x. */ | |
2476 | ||
2477 | static void | |
2478 | s390x_emit_if_goto (int *offset_p, int *size_p) | |
2479 | { | |
2480 | static const unsigned char buf[] = { | |
2481 | 0xb9, 0x02, 0x00, 0x22, /* ltgr %r2, %r2 */ | |
2482 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */ | |
2483 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2484 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2485 | }; | |
2486 | add_insns (buf, sizeof buf); | |
2487 | if (offset_p) | |
2488 | *offset_p = 16; | |
2489 | if (size_p) | |
2490 | *size_p = 4; | |
2491 | } | |
2492 | ||
2493 | /* The "emit_const" emit_ops method for s390x. */ | |
2494 | ||
2495 | static void | |
2496 | s390x_emit_const (LONGEST num) | |
2497 | { | |
2498 | unsigned long long n = num; | |
2499 | unsigned char buf_s[] = { | |
b4f183d2 TT |
2500 | /* lghi %r2, <num> */ |
2501 | 0xa7, 0x29, (unsigned char) (num >> 8), (unsigned char) num, | |
f39e8743 MK |
2502 | }; |
2503 | static const unsigned char buf_l[] = { | |
2504 | 0xe3, 0x20, 0x10, 0x00, 0x00, 0x04, /* lg %r2, 0(%r1) */ | |
2505 | }; | |
2506 | if (num < 0x8000 && num >= -0x8000) | |
2507 | { | |
2508 | add_insns (buf_s, sizeof buf_s); | |
2509 | } | |
2510 | else | |
2511 | { | |
2512 | s390_emit_litpool (8); | |
2513 | add_insns ((unsigned char *) &n, sizeof n); | |
2514 | add_insns (buf_l, sizeof buf_l); | |
2515 | } | |
2516 | } | |
2517 | ||
2518 | /* The "emit_call" emit_ops method for s390x. */ | |
2519 | ||
2520 | static void | |
2521 | s390x_emit_call (CORE_ADDR fn) | |
2522 | { | |
2523 | unsigned long n = fn; | |
2524 | static const unsigned char buf[] = { | |
2525 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1, 0(%r1) */ | |
2526 | 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */ | |
2527 | 0x0d, 0xe1, /* basr %r14, %r1 */ | |
2528 | 0xa7, 0xfb, 0x00, 0xa0, /* aghi %r15, 0xa0 */ | |
2529 | }; | |
2530 | s390_emit_litpool (8); | |
2531 | add_insns ((unsigned char *) &n, sizeof n); | |
2532 | add_insns (buf, sizeof buf); | |
2533 | } | |
2534 | ||
2535 | /* The "emit_reg" emit_ops method for s390x. */ | |
2536 | ||
2537 | static void | |
2538 | s390x_emit_reg (int reg) | |
2539 | { | |
2540 | unsigned char buf[] = { | |
b4f183d2 TT |
2541 | /* lgr %r2, %r9 */ |
2542 | 0xb9, 0x04, 0x00, 0x29, | |
2543 | /* lghi %r3, <reg> */ | |
2544 | 0xa7, 0x39, (unsigned char) (reg >> 8), (unsigned char) reg, | |
f39e8743 MK |
2545 | }; |
2546 | add_insns (buf, sizeof buf); | |
2547 | s390x_emit_call (get_raw_reg_func_addr ()); | |
2548 | } | |
2549 | ||
2550 | /* The "emit_pop" emit_ops method for s390x. */ | |
2551 | ||
2552 | static void | |
2553 | s390x_emit_pop (void) | |
2554 | { | |
2555 | static const unsigned char buf[] = { | |
2556 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */ | |
2557 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2558 | }; | |
2559 | add_insns (buf, sizeof buf); | |
2560 | } | |
2561 | ||
2562 | /* The "emit_stack_flush" emit_ops method for s390x. */ | |
2563 | ||
2564 | static void | |
2565 | s390x_emit_stack_flush (void) | |
2566 | { | |
2567 | static const unsigned char buf[] = { | |
2568 | 0xa7, 0xfb, 0xff, 0xf8, /* aghi %r15, -8 */ | |
2569 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */ | |
2570 | }; | |
2571 | add_insns (buf, sizeof buf); | |
2572 | } | |
2573 | ||
2574 | /* The "emit_zero_ext" emit_ops method for s390x. */ | |
2575 | ||
2576 | static void | |
2577 | s390x_emit_zero_ext (int arg) | |
2578 | { | |
2579 | unsigned char buf[] = { | |
b4f183d2 TT |
2580 | /* sllg %r2, %r2, <64-arg> */ |
2581 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d, | |
2582 | /* srlg %r2, %r2, <64-arg> */ | |
2583 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0c, | |
f39e8743 MK |
2584 | }; |
2585 | add_insns (buf, sizeof buf); | |
2586 | } | |
2587 | ||
2588 | /* The "emit_swap" emit_ops method for s390x. */ | |
2589 | ||
2590 | static void | |
2591 | s390x_emit_swap (void) | |
2592 | { | |
2593 | static const unsigned char buf[] = { | |
2594 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2595 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */ | |
2596 | 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */ | |
2597 | }; | |
2598 | add_insns (buf, sizeof buf); | |
2599 | } | |
2600 | ||
2601 | /* The "emit_stack_adjust" emit_ops method for s390x. */ | |
2602 | ||
2603 | static void | |
2604 | s390x_emit_stack_adjust (int n) | |
2605 | { | |
2606 | unsigned char buf[] = { | |
b4f183d2 TT |
2607 | /* aghi %r15, 8*n */ |
2608 | 0xa7, 0xfb, | |
2609 | (unsigned char) (n * 8 >> 8), (unsigned char) (n * 8), | |
f39e8743 MK |
2610 | }; |
2611 | add_insns (buf, sizeof buf); | |
2612 | } | |
2613 | ||
2614 | /* The "emit_int_call_1" emit_ops method for s390x. */ | |
2615 | ||
2616 | static void | |
2617 | s390x_emit_int_call_1 (CORE_ADDR fn, int arg1) | |
2618 | { | |
2619 | /* FN's prototype is `LONGEST(*fn)(int)'. */ | |
2620 | s390x_emit_const (arg1); | |
2621 | s390x_emit_call (fn); | |
2622 | } | |
2623 | ||
2624 | /* The "emit_void_call_2" emit_ops method for s390x. */ | |
2625 | ||
2626 | static void | |
2627 | s390x_emit_void_call_2 (CORE_ADDR fn, int arg1) | |
2628 | { | |
2629 | /* FN's prototype is `void(*fn)(int,LONGEST)'. */ | |
2630 | static const unsigned char buf[] = { | |
2631 | 0xb9, 0x04, 0x00, 0x32, /* lgr %r3, %r2 */ | |
2632 | 0xb9, 0x04, 0x00, 0xc2, /* lgr %r12, %r2 */ | |
2633 | }; | |
2634 | static const unsigned char buf2[] = { | |
2635 | 0xb9, 0x04, 0x00, 0x2c, /* lgr %r2, %r12 */ | |
2636 | }; | |
2637 | add_insns (buf, sizeof buf); | |
2638 | s390x_emit_const (arg1); | |
2639 | s390x_emit_call (fn); | |
2640 | add_insns (buf2, sizeof buf2); | |
2641 | } | |
2642 | ||
2643 | /* The "emit_eq_goto" emit_ops method for s390x. */ | |
2644 | ||
782c1122 | 2645 | static void |
f39e8743 MK |
2646 | s390x_emit_eq_goto (int *offset_p, int *size_p) |
2647 | { | |
2648 | static const unsigned char buf[] = { | |
2649 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2650 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2651 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2652 | 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */ | |
2653 | }; | |
2654 | add_insns (buf, sizeof buf); | |
2655 | if (offset_p) | |
2656 | *offset_p = 18; | |
2657 | if (size_p) | |
2658 | *size_p = 4; | |
2659 | } | |
2660 | ||
2661 | /* The "emit_ne_goto" emit_ops method for s390x. */ | |
2662 | ||
782c1122 | 2663 | static void |
f39e8743 MK |
2664 | s390x_emit_ne_goto (int *offset_p, int *size_p) |
2665 | { | |
2666 | static const unsigned char buf[] = { | |
2667 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2668 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2669 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2670 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2671 | }; | |
2672 | add_insns (buf, sizeof buf); | |
2673 | if (offset_p) | |
2674 | *offset_p = 18; | |
2675 | if (size_p) | |
2676 | *size_p = 4; | |
2677 | } | |
2678 | ||
2679 | /* The "emit_lt_goto" emit_ops method for s390x. */ | |
2680 | ||
782c1122 | 2681 | static void |
f39e8743 MK |
2682 | s390x_emit_lt_goto (int *offset_p, int *size_p) |
2683 | { | |
2684 | static const unsigned char buf[] = { | |
2685 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2686 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2687 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2688 | 0xc0, 0x24, 0x00, 0x00, 0x00, 0x00, /* jgh <fillme> */ | |
2689 | }; | |
2690 | add_insns (buf, sizeof buf); | |
2691 | if (offset_p) | |
2692 | *offset_p = 18; | |
2693 | if (size_p) | |
2694 | *size_p = 4; | |
2695 | } | |
2696 | ||
2697 | /* The "emit_le_goto" emit_ops method for s390x. */ | |
2698 | ||
782c1122 | 2699 | static void |
f39e8743 MK |
2700 | s390x_emit_le_goto (int *offset_p, int *size_p) |
2701 | { | |
2702 | static const unsigned char buf[] = { | |
2703 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2704 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2705 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2706 | 0xc0, 0xa4, 0x00, 0x00, 0x00, 0x00, /* jghe <fillme> */ | |
2707 | }; | |
2708 | add_insns (buf, sizeof buf); | |
2709 | if (offset_p) | |
2710 | *offset_p = 18; | |
2711 | if (size_p) | |
2712 | *size_p = 4; | |
2713 | } | |
2714 | ||
2715 | /* The "emit_gt_goto" emit_ops method for s390x. */ | |
2716 | ||
782c1122 | 2717 | static void |
f39e8743 MK |
2718 | s390x_emit_gt_goto (int *offset_p, int *size_p) |
2719 | { | |
2720 | static const unsigned char buf[] = { | |
2721 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2722 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2723 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2724 | 0xc0, 0x44, 0x00, 0x00, 0x00, 0x00, /* jgl <fillme> */ | |
2725 | }; | |
2726 | add_insns (buf, sizeof buf); | |
2727 | if (offset_p) | |
2728 | *offset_p = 18; | |
2729 | if (size_p) | |
2730 | *size_p = 4; | |
2731 | } | |
2732 | ||
2733 | /* The "emit_ge_goto" emit_ops method for s390x. */ | |
2734 | ||
782c1122 | 2735 | static void |
f39e8743 MK |
2736 | s390x_emit_ge_goto (int *offset_p, int *size_p) |
2737 | { | |
2738 | static const unsigned char buf[] = { | |
2739 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2740 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2741 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2742 | 0xc0, 0xc4, 0x00, 0x00, 0x00, 0x00, /* jgle <fillme> */ | |
2743 | }; | |
2744 | add_insns (buf, sizeof buf); | |
2745 | if (offset_p) | |
2746 | *offset_p = 18; | |
2747 | if (size_p) | |
2748 | *size_p = 4; | |
2749 | } | |
2750 | ||
2751 | /* The "emit_ops" structure for s390x. */ | |
2752 | ||
782c1122 | 2753 | static struct emit_ops s390x_emit_ops = |
f39e8743 MK |
2754 | { |
2755 | s390x_emit_prologue, | |
2756 | s390x_emit_epilogue, | |
2757 | s390x_emit_add, | |
2758 | s390x_emit_sub, | |
2759 | s390x_emit_mul, | |
2760 | s390x_emit_lsh, | |
2761 | s390x_emit_rsh_signed, | |
2762 | s390x_emit_rsh_unsigned, | |
2763 | s390x_emit_ext, | |
2764 | s390x_emit_log_not, | |
2765 | s390x_emit_bit_and, | |
2766 | s390x_emit_bit_or, | |
2767 | s390x_emit_bit_xor, | |
2768 | s390x_emit_bit_not, | |
2769 | s390x_emit_equal, | |
2770 | s390x_emit_less_signed, | |
2771 | s390x_emit_less_unsigned, | |
2772 | s390x_emit_ref, | |
2773 | s390x_emit_if_goto, | |
2774 | s390_emit_goto, | |
2775 | s390_write_goto_address, | |
2776 | s390x_emit_const, | |
2777 | s390x_emit_call, | |
2778 | s390x_emit_reg, | |
2779 | s390x_emit_pop, | |
2780 | s390x_emit_stack_flush, | |
2781 | s390x_emit_zero_ext, | |
2782 | s390x_emit_swap, | |
2783 | s390x_emit_stack_adjust, | |
2784 | s390x_emit_int_call_1, | |
2785 | s390x_emit_void_call_2, | |
2786 | s390x_emit_eq_goto, | |
2787 | s390x_emit_ne_goto, | |
2788 | s390x_emit_lt_goto, | |
2789 | s390x_emit_le_goto, | |
2790 | s390x_emit_gt_goto, | |
2791 | s390x_emit_ge_goto | |
2792 | }; | |
2793 | #endif | |
2794 | ||
2795 | /* The "emit_ops" linux_target_ops method. */ | |
2796 | ||
2797 | static struct emit_ops * | |
2798 | s390_emit_ops (void) | |
2799 | { | |
2800 | #ifdef __s390x__ | |
2801 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
2802 | ||
2803 | if (register_size (regcache->tdesc, 0) == 8) | |
2804 | return &s390x_emit_ops; | |
2805 | else | |
2806 | #endif | |
2807 | return &s390_emit_ops_impl; | |
2808 | } | |
2809 | ||
2ec06d2e | 2810 | struct linux_target_ops the_low_target = { |
2ec06d2e DJ |
2811 | s390_cannot_fetch_register, |
2812 | s390_cannot_store_register, | |
c14dfd32 | 2813 | NULL, /* fetch_register */ |
b0ded00b UW |
2814 | s390_get_pc, |
2815 | s390_set_pc, | |
dd373349 AT |
2816 | NULL, /* breakpoint_kind_from_pc */ |
2817 | s390_sw_breakpoint_from_kind, | |
b0ded00b UW |
2818 | NULL, |
2819 | s390_breakpoint_len, | |
2820 | s390_breakpoint_at, | |
b00b61e1 | 2821 | s390_supports_z_point_type, |
ee1a7ae4 UW |
2822 | NULL, |
2823 | NULL, | |
2824 | NULL, | |
2825 | NULL, | |
2826 | s390_collect_ptrace_register, | |
2827 | s390_supply_ptrace_register, | |
7d00775e AT |
2828 | NULL, /* siginfo_fixup */ |
2829 | NULL, /* new_process */ | |
04ec7890 | 2830 | NULL, /* delete_process */ |
7d00775e | 2831 | NULL, /* new_thread */ |
466eecee | 2832 | NULL, /* delete_thread */ |
7d00775e AT |
2833 | NULL, /* new_fork */ |
2834 | NULL, /* prepare_to_resume */ | |
2835 | NULL, /* process_qsupported */ | |
a4105d04 | 2836 | s390_supports_tracepoints, |
abd9baf9 MK |
2837 | s390_get_thread_area, |
2838 | s390_install_fast_tracepoint_jump_pad, | |
f39e8743 | 2839 | s390_emit_ops, |
abd9baf9 | 2840 | s390_get_min_fast_tracepoint_insn_len, |
7d00775e AT |
2841 | NULL, /* supports_range_stepping */ |
2842 | NULL, /* breakpoint_kind_from_current_state */ | |
2843 | s390_supports_hardware_single_step, | |
abd9baf9 MK |
2844 | NULL, /* get_syscall_trapinfo */ |
2845 | s390_get_ipa_tdesc_idx, | |
2ec06d2e | 2846 | }; |
3aee8918 | 2847 | |
ef0478f6 TBA |
2848 | /* The linux target ops object. */ |
2849 | ||
2850 | linux_process_target *the_linux_target = &the_s390_target; | |
2851 | ||
3aee8918 PA |
2852 | void |
2853 | initialize_low_arch (void) | |
2854 | { | |
2855 | /* Initialize the Linux target descriptions. */ | |
2856 | ||
2857 | init_registers_s390_linux32 (); | |
2858 | init_registers_s390_linux32v1 (); | |
2859 | init_registers_s390_linux32v2 (); | |
2860 | init_registers_s390_linux64 (); | |
2861 | init_registers_s390_linux64v1 (); | |
2862 | init_registers_s390_linux64v2 (); | |
4ac33720 | 2863 | init_registers_s390_te_linux64 (); |
bf2d68ab AA |
2864 | init_registers_s390_vx_linux64 (); |
2865 | init_registers_s390_tevx_linux64 (); | |
ad339634 | 2866 | init_registers_s390_gs_linux64 (); |
abd9baf9 | 2867 | #ifdef __s390x__ |
3aee8918 PA |
2868 | init_registers_s390x_linux64 (); |
2869 | init_registers_s390x_linux64v1 (); | |
2870 | init_registers_s390x_linux64v2 (); | |
4ac33720 | 2871 | init_registers_s390x_te_linux64 (); |
bf2d68ab AA |
2872 | init_registers_s390x_vx_linux64 (); |
2873 | init_registers_s390x_tevx_linux64 (); | |
ad339634 | 2874 | init_registers_s390x_gs_linux64 (); |
abd9baf9 | 2875 | #endif |
3aee8918 PA |
2876 | |
2877 | initialize_regsets_info (&s390_regsets_info); | |
3aee8918 | 2878 | initialize_regsets_info (&s390_regsets_info_3264); |
3aee8918 | 2879 | } |