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; | |
daca57a7 TBA |
65 | |
66 | bool low_cannot_fetch_register (int regno) override; | |
67 | ||
68 | bool low_cannot_store_register (int regno) override; | |
ef0478f6 TBA |
69 | }; |
70 | ||
71 | /* The singleton target ops object. */ | |
72 | ||
73 | static s390_target the_s390_target; | |
74 | ||
2ec06d2e | 75 | static int s390_regmap[] = { |
265f716b DJ |
76 | PT_PSWMASK, PT_PSWADDR, |
77 | ||
78 | PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3, | |
79 | PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7, | |
80 | PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11, | |
81 | PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15, | |
82 | ||
83 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
84 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
85 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
86 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
87 | ||
265f716b DJ |
88 | PT_FPC, |
89 | ||
d0f54f9d | 90 | #ifndef __s390x__ |
265f716b DJ |
91 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, |
92 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, | |
93 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, | |
94 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, | |
95 | #else | |
96 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, | |
97 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, | |
98 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, | |
99 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, | |
100 | #endif | |
c642a434 UW |
101 | |
102 | PT_ORIGGPR2, | |
265f716b DJ |
103 | }; |
104 | ||
c642a434 | 105 | #define s390_num_regs_3264 68 |
7803799a | 106 | |
ab503087 | 107 | #ifdef __s390x__ |
7803799a UW |
108 | static int s390_regmap_3264[] = { |
109 | PT_PSWMASK, PT_PSWADDR, | |
110 | ||
493e2a69 MS |
111 | PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1, |
112 | PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3, | |
113 | PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5, | |
114 | PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7, | |
115 | PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9, | |
116 | PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11, | |
117 | PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13, | |
118 | PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15, | |
7803799a UW |
119 | |
120 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
121 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
122 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
123 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
124 | ||
125 | PT_FPC, | |
126 | ||
127 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, | |
128 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, | |
129 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, | |
130 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, | |
c642a434 UW |
131 | |
132 | PT_ORIGGPR2, | |
7803799a | 133 | }; |
ab503087 MK |
134 | #else |
135 | static int s390_regmap_3264[] = { | |
136 | PT_PSWMASK, PT_PSWADDR, | |
137 | ||
138 | -1, PT_GPR0, -1, PT_GPR1, | |
139 | -1, PT_GPR2, -1, PT_GPR3, | |
140 | -1, PT_GPR4, -1, PT_GPR5, | |
141 | -1, PT_GPR6, -1, PT_GPR7, | |
142 | -1, PT_GPR8, -1, PT_GPR9, | |
143 | -1, PT_GPR10, -1, PT_GPR11, | |
144 | -1, PT_GPR12, -1, PT_GPR13, | |
145 | -1, PT_GPR14, -1, PT_GPR15, | |
146 | ||
147 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
148 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
149 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
150 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
151 | ||
152 | PT_FPC, | |
153 | ||
154 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, | |
155 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, | |
156 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, | |
157 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, | |
158 | ||
159 | PT_ORIGGPR2, | |
160 | }; | |
7803799a UW |
161 | #endif |
162 | ||
163 | ||
daca57a7 TBA |
164 | bool |
165 | s390_target::low_cannot_fetch_register (int regno) | |
265f716b | 166 | { |
daca57a7 | 167 | return false; |
265f716b DJ |
168 | } |
169 | ||
daca57a7 TBA |
170 | bool |
171 | s390_target::low_cannot_store_register (int regno) | |
265f716b | 172 | { |
daca57a7 | 173 | return false; |
265f716b | 174 | } |
2ec06d2e | 175 | |
ee1a7ae4 | 176 | static void |
442ea881 | 177 | s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf) |
ee1a7ae4 | 178 | { |
3aee8918 | 179 | int size = register_size (regcache->tdesc, regno); |
aa8d21c9 | 180 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
ab503087 MK |
181 | struct usrregs_info *usr = regs_info->usrregs; |
182 | int regaddr = usr->regmap[regno]; | |
183 | ||
ee1a7ae4 UW |
184 | if (size < sizeof (long)) |
185 | { | |
186 | memset (buf, 0, sizeof (long)); | |
187 | ||
3aee8918 PA |
188 | if ((regno ^ 1) < usr->num_regs |
189 | && usr->regmap[regno ^ 1] == regaddr) | |
7803799a | 190 | { |
18f5de3b JK |
191 | collect_register (regcache, regno & ~1, buf); |
192 | collect_register (regcache, (regno & ~1) + 1, | |
193 | buf + sizeof (long) - size); | |
7803799a | 194 | } |
d6db1fab UW |
195 | else if (regaddr == PT_PSWMASK) |
196 | { | |
197 | /* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying | |
198 | the basic addressing mode bit from the PSW address. */ | |
3451269c | 199 | gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1)); |
d6db1fab UW |
200 | collect_register (regcache, regno, buf); |
201 | collect_register (regcache, regno ^ 1, addr); | |
202 | buf[1] &= ~0x8; | |
203 | buf[size] |= (addr[0] & 0x80); | |
204 | } | |
205 | else if (regaddr == PT_PSWADDR) | |
206 | { | |
207 | /* Convert 4-byte PSW address to 8 bytes by clearing the addressing | |
208 | mode bit (which gets copied to the PSW mask instead). */ | |
209 | collect_register (regcache, regno, buf + sizeof (long) - size); | |
210 | buf[sizeof (long) - size] &= ~0x80; | |
211 | } | |
c642a434 UW |
212 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
213 | || regaddr == PT_ORIGGPR2) | |
442ea881 | 214 | collect_register (regcache, regno, buf + sizeof (long) - size); |
ee1a7ae4 | 215 | else |
442ea881 | 216 | collect_register (regcache, regno, buf); |
ee1a7ae4 | 217 | } |
ab503087 | 218 | else if (regaddr != -1) |
18f5de3b | 219 | collect_register (regcache, regno, buf); |
ee1a7ae4 UW |
220 | } |
221 | ||
222 | static void | |
493e2a69 MS |
223 | s390_supply_ptrace_register (struct regcache *regcache, |
224 | int regno, const char *buf) | |
ee1a7ae4 | 225 | { |
3aee8918 | 226 | int size = register_size (regcache->tdesc, regno); |
aa8d21c9 | 227 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
ab503087 MK |
228 | struct usrregs_info *usr = regs_info->usrregs; |
229 | int regaddr = usr->regmap[regno]; | |
230 | ||
ee1a7ae4 UW |
231 | if (size < sizeof (long)) |
232 | { | |
3aee8918 PA |
233 | if ((regno ^ 1) < usr->num_regs |
234 | && usr->regmap[regno ^ 1] == regaddr) | |
7803799a | 235 | { |
18f5de3b JK |
236 | supply_register (regcache, regno & ~1, buf); |
237 | supply_register (regcache, (regno & ~1) + 1, | |
238 | buf + sizeof (long) - size); | |
7803799a | 239 | } |
d6db1fab UW |
240 | else if (regaddr == PT_PSWMASK) |
241 | { | |
242 | /* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying | |
243 | the basic addressing mode into the PSW address. */ | |
3451269c PA |
244 | gdb_byte *mask = (gdb_byte *) alloca (size); |
245 | gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1)); | |
d6db1fab UW |
246 | memcpy (mask, buf, size); |
247 | mask[1] |= 0x8; | |
248 | supply_register (regcache, regno, mask); | |
249 | ||
250 | collect_register (regcache, regno ^ 1, addr); | |
251 | addr[0] &= ~0x80; | |
252 | addr[0] |= (buf[size] & 0x80); | |
253 | supply_register (regcache, regno ^ 1, addr); | |
254 | } | |
255 | else if (regaddr == PT_PSWADDR) | |
256 | { | |
257 | /* Convert 8-byte PSW address to 4 bytes by truncating, but | |
258 | keeping the addressing mode bit (which was set from the mask). */ | |
3451269c | 259 | gdb_byte *addr = (gdb_byte *) alloca (size); |
d6db1fab UW |
260 | char amode; |
261 | collect_register (regcache, regno, addr); | |
262 | amode = addr[0] & 0x80; | |
263 | memcpy (addr, buf + sizeof (long) - size, size); | |
264 | addr[0] &= ~0x80; | |
265 | addr[0] |= amode; | |
266 | supply_register (regcache, regno, addr); | |
267 | } | |
c642a434 UW |
268 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
269 | || regaddr == PT_ORIGGPR2) | |
442ea881 | 270 | supply_register (regcache, regno, buf + sizeof (long) - size); |
ee1a7ae4 | 271 | else |
442ea881 | 272 | supply_register (regcache, regno, buf); |
ee1a7ae4 | 273 | } |
ab503087 | 274 | else if (regaddr != -1) |
442ea881 | 275 | supply_register (regcache, regno, buf); |
ee1a7ae4 UW |
276 | } |
277 | ||
b7149293 UW |
278 | /* Provide only a fill function for the general register set. ps_lgetregs |
279 | will use this for NPTL support. */ | |
280 | ||
3aee8918 PA |
281 | static void |
282 | s390_fill_gregset (struct regcache *regcache, void *buf) | |
b7149293 UW |
283 | { |
284 | int i; | |
aa8d21c9 | 285 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
3aee8918 | 286 | struct usrregs_info *usr = regs_info->usrregs; |
b7149293 | 287 | |
3aee8918 | 288 | for (i = 0; i < usr->num_regs; i++) |
7803799a | 289 | { |
3aee8918 PA |
290 | if (usr->regmap[i] < PT_PSWMASK |
291 | || usr->regmap[i] > PT_ACR15) | |
7803799a UW |
292 | continue; |
293 | ||
3aee8918 PA |
294 | s390_collect_ptrace_register (regcache, i, |
295 | (char *) buf + usr->regmap[i]); | |
7803799a | 296 | } |
b7149293 UW |
297 | } |
298 | ||
c642a434 UW |
299 | /* Fill and store functions for extended register sets. */ |
300 | ||
ab503087 MK |
301 | #ifndef __s390x__ |
302 | static void | |
303 | s390_fill_gprs_high (struct regcache *regcache, void *buf) | |
304 | { | |
305 | int r0h = find_regno (regcache->tdesc, "r0h"); | |
306 | int i; | |
307 | ||
308 | for (i = 0; i < 16; i++) | |
309 | collect_register (regcache, r0h + 2 * i, (char *) buf + 4 * i); | |
310 | } | |
311 | ||
312 | static void | |
313 | s390_store_gprs_high (struct regcache *regcache, const void *buf) | |
314 | { | |
315 | int r0h = find_regno (regcache->tdesc, "r0h"); | |
316 | int i; | |
317 | ||
318 | for (i = 0; i < 16; i++) | |
319 | supply_register (regcache, r0h + 2 * i, (const char *) buf + 4 * i); | |
320 | } | |
321 | #endif | |
322 | ||
c642a434 UW |
323 | static void |
324 | s390_store_last_break (struct regcache *regcache, const void *buf) | |
325 | { | |
3aee8918 PA |
326 | const char *p; |
327 | ||
328 | p = (const char *) buf + 8 - register_size (regcache->tdesc, 0); | |
329 | supply_register_by_name (regcache, "last_break", p); | |
c642a434 UW |
330 | } |
331 | ||
332 | static void | |
333 | s390_fill_system_call (struct regcache *regcache, void *buf) | |
334 | { | |
335 | collect_register_by_name (regcache, "system_call", buf); | |
336 | } | |
337 | ||
338 | static void | |
339 | s390_store_system_call (struct regcache *regcache, const void *buf) | |
340 | { | |
341 | supply_register_by_name (regcache, "system_call", buf); | |
342 | } | |
343 | ||
e5a9158d AA |
344 | static void |
345 | s390_store_tdb (struct regcache *regcache, const void *buf) | |
346 | { | |
347 | int tdb0 = find_regno (regcache->tdesc, "tdb0"); | |
348 | int tr0 = find_regno (regcache->tdesc, "tr0"); | |
349 | int i; | |
350 | ||
351 | for (i = 0; i < 4; i++) | |
352 | supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i); | |
353 | ||
354 | for (i = 0; i < 16; i++) | |
355 | supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i)); | |
356 | } | |
357 | ||
bf2d68ab AA |
358 | static void |
359 | s390_fill_vxrs_low (struct regcache *regcache, void *buf) | |
360 | { | |
361 | int v0 = find_regno (regcache->tdesc, "v0l"); | |
362 | int i; | |
363 | ||
364 | for (i = 0; i < 16; i++) | |
365 | collect_register (regcache, v0 + i, (char *) buf + 8 * i); | |
366 | } | |
367 | ||
368 | static void | |
369 | s390_store_vxrs_low (struct regcache *regcache, const void *buf) | |
370 | { | |
371 | int v0 = find_regno (regcache->tdesc, "v0l"); | |
372 | int i; | |
373 | ||
374 | for (i = 0; i < 16; i++) | |
375 | supply_register (regcache, v0 + i, (const char *) buf + 8 * i); | |
376 | } | |
377 | ||
378 | static void | |
379 | s390_fill_vxrs_high (struct regcache *regcache, void *buf) | |
380 | { | |
381 | int v16 = find_regno (regcache->tdesc, "v16"); | |
382 | int i; | |
383 | ||
384 | for (i = 0; i < 16; i++) | |
385 | collect_register (regcache, v16 + i, (char *) buf + 16 * i); | |
386 | } | |
387 | ||
388 | static void | |
389 | s390_store_vxrs_high (struct regcache *regcache, const void *buf) | |
390 | { | |
391 | int v16 = find_regno (regcache->tdesc, "v16"); | |
392 | int i; | |
393 | ||
394 | for (i = 0; i < 16; i++) | |
395 | supply_register (regcache, v16 + i, (const char *) buf + 16 * i); | |
396 | } | |
397 | ||
ad339634 AA |
398 | static void |
399 | s390_store_gs (struct regcache *regcache, const void *buf) | |
400 | { | |
401 | int gsd = find_regno (regcache->tdesc, "gsd"); | |
402 | int i; | |
403 | ||
404 | for (i = 0; i < 3; i++) | |
405 | supply_register (regcache, gsd + i, (const char *) buf + 8 * (i + 1)); | |
406 | } | |
407 | ||
ad339634 AA |
408 | static void |
409 | s390_store_gsbc (struct regcache *regcache, const void *buf) | |
410 | { | |
411 | int bc_gsd = find_regno (regcache->tdesc, "bc_gsd"); | |
412 | int i; | |
413 | ||
414 | for (i = 0; i < 3; i++) | |
415 | supply_register (regcache, bc_gsd + i, (const char *) buf + 8 * (i + 1)); | |
416 | } | |
417 | ||
3aee8918 | 418 | static struct regset_info s390_regsets[] = { |
1570b33e | 419 | { 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL }, |
ab503087 MK |
420 | #ifndef __s390x__ |
421 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_HIGH_GPRS, 0, | |
422 | EXTENDED_REGS, s390_fill_gprs_high, s390_store_gprs_high }, | |
423 | #endif | |
feea5f36 AA |
424 | /* Last break address is read-only; no fill function. */ |
425 | { PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS, | |
426 | NULL, s390_store_last_break }, | |
c642a434 UW |
427 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0, |
428 | EXTENDED_REGS, s390_fill_system_call, s390_store_system_call }, | |
e5a9158d AA |
429 | /* TDB is read-only. */ |
430 | { PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS, | |
431 | NULL, s390_store_tdb }, | |
bf2d68ab AA |
432 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_LOW, 0, |
433 | EXTENDED_REGS, s390_fill_vxrs_low, s390_store_vxrs_low }, | |
434 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_HIGH, 0, | |
435 | EXTENDED_REGS, s390_fill_vxrs_high, s390_store_vxrs_high }, | |
c49bd90b AA |
436 | /* Guarded storage registers are read-only. */ |
437 | { PTRACE_GETREGSET, -1, NT_S390_GS_CB, 0, EXTENDED_REGS, | |
438 | NULL, s390_store_gs }, | |
439 | { PTRACE_GETREGSET, -1, NT_S390_GS_BC, 0, EXTENDED_REGS, | |
440 | NULL, s390_store_gsbc }, | |
50bc912a | 441 | NULL_REGSET |
b7149293 UW |
442 | }; |
443 | ||
b0ded00b | 444 | |
dd373349 | 445 | static const gdb_byte s390_breakpoint[] = { 0, 1 }; |
b0ded00b UW |
446 | #define s390_breakpoint_len 2 |
447 | ||
dd373349 AT |
448 | /* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */ |
449 | ||
450 | static const gdb_byte * | |
451 | s390_sw_breakpoint_from_kind (int kind, int *size) | |
452 | { | |
453 | *size = s390_breakpoint_len; | |
454 | return s390_breakpoint; | |
455 | } | |
456 | ||
b0ded00b | 457 | static CORE_ADDR |
442ea881 | 458 | s390_get_pc (struct regcache *regcache) |
b0ded00b | 459 | { |
3aee8918 | 460 | if (register_size (regcache->tdesc, 0) == 4) |
d61ddec4 | 461 | { |
d6db1fab UW |
462 | unsigned int pswa; |
463 | collect_register_by_name (regcache, "pswa", &pswa); | |
464 | return pswa & 0x7fffffff; | |
d61ddec4 UW |
465 | } |
466 | else | |
467 | { | |
468 | unsigned long pc; | |
442ea881 | 469 | collect_register_by_name (regcache, "pswa", &pc); |
d61ddec4 UW |
470 | return pc; |
471 | } | |
b0ded00b UW |
472 | } |
473 | ||
474 | static void | |
442ea881 | 475 | s390_set_pc (struct regcache *regcache, CORE_ADDR newpc) |
b0ded00b | 476 | { |
3aee8918 | 477 | if (register_size (regcache->tdesc, 0) == 4) |
d61ddec4 | 478 | { |
d6db1fab UW |
479 | unsigned int pswa; |
480 | collect_register_by_name (regcache, "pswa", &pswa); | |
481 | pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff); | |
482 | supply_register_by_name (regcache, "pswa", &pswa); | |
d61ddec4 UW |
483 | } |
484 | else | |
485 | { | |
486 | unsigned long pc = newpc; | |
442ea881 | 487 | supply_register_by_name (regcache, "pswa", &pc); |
d61ddec4 | 488 | } |
b0ded00b UW |
489 | } |
490 | ||
7edb9bd3 AA |
491 | /* Determine the word size for the given PID, in bytes. */ |
492 | ||
493 | #ifdef __s390x__ | |
494 | static int | |
495 | s390_get_wordsize (int pid) | |
496 | { | |
497 | errno = 0; | |
498 | PTRACE_XFER_TYPE pswm = ptrace (PTRACE_PEEKUSER, pid, | |
499 | (PTRACE_TYPE_ARG3) 0, | |
500 | (PTRACE_TYPE_ARG4) 0); | |
f69c5afb AA |
501 | if (errno != 0) |
502 | { | |
422186a9 | 503 | warning (_("Couldn't determine word size, assuming 64-bit.")); |
f69c5afb AA |
504 | return 8; |
505 | } | |
7edb9bd3 AA |
506 | /* Derive word size from extended addressing mode (PSW bit 31). */ |
507 | return pswm & (1L << 32) ? 8 : 4; | |
508 | } | |
509 | #else | |
510 | #define s390_get_wordsize(pid) 4 | |
511 | #endif | |
512 | ||
c642a434 UW |
513 | static int |
514 | s390_check_regset (int pid, int regset, int regsize) | |
515 | { | |
3451269c | 516 | void *buf = alloca (regsize); |
c642a434 UW |
517 | struct iovec iov; |
518 | ||
519 | iov.iov_base = buf; | |
520 | iov.iov_len = regsize; | |
521 | ||
4ac33720 UW |
522 | if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0 |
523 | || errno == ENODATA) | |
c642a434 | 524 | return 1; |
4ac33720 | 525 | return 0; |
c642a434 UW |
526 | } |
527 | ||
3aee8918 PA |
528 | /* For a 31-bit inferior, whether the kernel supports using the full |
529 | 64-bit GPRs. */ | |
530 | static int have_hwcap_s390_high_gprs = 0; | |
abd9baf9 | 531 | static int have_hwcap_s390_vx = 0; |
3aee8918 | 532 | |
797bcff5 TBA |
533 | void |
534 | s390_target::low_arch_setup () | |
d61ddec4 | 535 | { |
3aee8918 | 536 | const struct target_desc *tdesc; |
c642a434 UW |
537 | struct regset_info *regset; |
538 | ||
7edb9bd3 | 539 | /* Determine word size and HWCAP. */ |
0bfdf32f | 540 | int pid = pid_of (current_thread); |
7edb9bd3 | 541 | int wordsize = s390_get_wordsize (pid); |
974c89e0 | 542 | unsigned long hwcap = linux_get_hwcap (wordsize); |
7edb9bd3 AA |
543 | |
544 | /* Check whether the kernel supports extra register sets. */ | |
c642a434 UW |
545 | int have_regset_last_break |
546 | = s390_check_regset (pid, NT_S390_LAST_BREAK, 8); | |
547 | int have_regset_system_call | |
548 | = s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4); | |
7edb9bd3 AA |
549 | int have_regset_tdb |
550 | = (s390_check_regset (pid, NT_S390_TDB, 256) | |
551 | && (hwcap & HWCAP_S390_TE) != 0); | |
552 | int have_regset_vxrs | |
553 | = (s390_check_regset (pid, NT_S390_VXRS_LOW, 128) | |
554 | && s390_check_regset (pid, NT_S390_VXRS_HIGH, 256) | |
555 | && (hwcap & HWCAP_S390_VX) != 0); | |
556 | int have_regset_gs | |
557 | = (s390_check_regset (pid, NT_S390_GS_CB, 32) | |
558 | && s390_check_regset (pid, NT_S390_GS_BC, 32) | |
559 | && (hwcap & HWCAP_S390_GS) != 0); | |
d61ddec4 | 560 | |
d61ddec4 | 561 | { |
ab503087 | 562 | #ifdef __s390x__ |
7edb9bd3 | 563 | if (wordsize == 8) |
c642a434 | 564 | { |
ad339634 AA |
565 | if (have_regset_gs) |
566 | tdesc = tdesc_s390x_gs_linux64; | |
567 | else if (have_regset_vxrs) | |
bf2d68ab AA |
568 | tdesc = (have_regset_tdb ? tdesc_s390x_tevx_linux64 : |
569 | tdesc_s390x_vx_linux64); | |
570 | else if (have_regset_tdb) | |
4ac33720 | 571 | tdesc = tdesc_s390x_te_linux64; |
6682d959 | 572 | else if (have_regset_system_call) |
3aee8918 | 573 | tdesc = tdesc_s390x_linux64v2; |
c642a434 | 574 | else if (have_regset_last_break) |
3aee8918 | 575 | tdesc = tdesc_s390x_linux64v1; |
c642a434 | 576 | else |
3aee8918 | 577 | tdesc = tdesc_s390x_linux64; |
c642a434 | 578 | } |
7803799a UW |
579 | |
580 | /* For a 31-bit inferior, check whether the kernel supports | |
581 | using the full 64-bit GPRs. */ | |
ab503087 MK |
582 | else |
583 | #endif | |
7edb9bd3 | 584 | if (hwcap & HWCAP_S390_HIGH_GPRS) |
7803799a | 585 | { |
3aee8918 | 586 | have_hwcap_s390_high_gprs = 1; |
ad339634 AA |
587 | if (have_regset_gs) |
588 | tdesc = tdesc_s390_gs_linux64; | |
589 | else if (have_regset_vxrs) | |
bf2d68ab AA |
590 | tdesc = (have_regset_tdb ? tdesc_s390_tevx_linux64 : |
591 | tdesc_s390_vx_linux64); | |
592 | else if (have_regset_tdb) | |
4ac33720 UW |
593 | tdesc = tdesc_s390_te_linux64; |
594 | else if (have_regset_system_call) | |
3aee8918 | 595 | tdesc = tdesc_s390_linux64v2; |
c642a434 | 596 | else if (have_regset_last_break) |
3aee8918 | 597 | tdesc = tdesc_s390_linux64v1; |
c642a434 | 598 | else |
3aee8918 | 599 | tdesc = tdesc_s390_linux64; |
7803799a | 600 | } |
7edb9bd3 AA |
601 | else |
602 | { | |
603 | /* Assume 31-bit inferior process. */ | |
604 | if (have_regset_system_call) | |
605 | tdesc = tdesc_s390_linux32v2; | |
606 | else if (have_regset_last_break) | |
607 | tdesc = tdesc_s390_linux32v1; | |
608 | else | |
609 | tdesc = tdesc_s390_linux32; | |
610 | } | |
abd9baf9 MK |
611 | |
612 | have_hwcap_s390_vx = have_regset_vxrs; | |
d61ddec4 | 613 | } |
6682d959 AA |
614 | |
615 | /* Update target_regsets according to available register sets. */ | |
feea5f36 | 616 | for (regset = s390_regsets; regset->size >= 0; regset++) |
6682d959 AA |
617 | if (regset->get_request == PTRACE_GETREGSET) |
618 | switch (regset->nt_type) | |
619 | { | |
ab503087 MK |
620 | #ifndef __s390x__ |
621 | case NT_S390_HIGH_GPRS: | |
622 | regset->size = have_hwcap_s390_high_gprs ? 64 : 0; | |
623 | break; | |
624 | #endif | |
6682d959 | 625 | case NT_S390_LAST_BREAK: |
ab503087 | 626 | regset->size = have_regset_last_break ? 8 : 0; |
6682d959 AA |
627 | break; |
628 | case NT_S390_SYSTEM_CALL: | |
ab503087 | 629 | regset->size = have_regset_system_call ? 4 : 0; |
6682d959 AA |
630 | break; |
631 | case NT_S390_TDB: | |
632 | regset->size = have_regset_tdb ? 256 : 0; | |
bf2d68ab AA |
633 | break; |
634 | case NT_S390_VXRS_LOW: | |
635 | regset->size = have_regset_vxrs ? 128 : 0; | |
636 | break; | |
637 | case NT_S390_VXRS_HIGH: | |
638 | regset->size = have_regset_vxrs ? 256 : 0; | |
639 | break; | |
ad339634 AA |
640 | case NT_S390_GS_CB: |
641 | case NT_S390_GS_BC: | |
642 | regset->size = have_regset_gs ? 32 : 0; | |
6682d959 AA |
643 | default: |
644 | break; | |
645 | } | |
646 | ||
3aee8918 | 647 | current_process ()->tdesc = tdesc; |
d61ddec4 UW |
648 | } |
649 | ||
650 | ||
b0ded00b UW |
651 | static int |
652 | s390_breakpoint_at (CORE_ADDR pc) | |
653 | { | |
654 | unsigned char c[s390_breakpoint_len]; | |
655 | read_inferior_memory (pc, c, s390_breakpoint_len); | |
656 | return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0; | |
657 | } | |
658 | ||
b00b61e1 MK |
659 | /* Breakpoint/Watchpoint support. */ |
660 | ||
661 | /* The "supports_z_point_type" linux_target_ops method. */ | |
662 | ||
663 | static int | |
664 | s390_supports_z_point_type (char z_type) | |
665 | { | |
666 | switch (z_type) | |
667 | { | |
668 | case Z_PACKET_SW_BP: | |
669 | return 1; | |
670 | default: | |
671 | return 0; | |
672 | } | |
673 | } | |
674 | ||
7d00775e AT |
675 | /* Support for hardware single step. */ |
676 | ||
677 | static int | |
678 | s390_supports_hardware_single_step (void) | |
679 | { | |
680 | return 1; | |
681 | } | |
682 | ||
3aee8918 PA |
683 | static struct usrregs_info s390_usrregs_info = |
684 | { | |
685 | s390_num_regs, | |
686 | s390_regmap, | |
687 | }; | |
688 | ||
689 | static struct regsets_info s390_regsets_info = | |
690 | { | |
691 | s390_regsets, /* regsets */ | |
692 | 0, /* num_regsets */ | |
693 | NULL, /* disabled_regsets */ | |
694 | }; | |
695 | ||
aa8d21c9 | 696 | static struct regs_info myregs_info = |
3aee8918 PA |
697 | { |
698 | NULL, /* regset_bitmap */ | |
699 | &s390_usrregs_info, | |
700 | &s390_regsets_info | |
701 | }; | |
702 | ||
3aee8918 PA |
703 | static struct usrregs_info s390_usrregs_info_3264 = |
704 | { | |
705 | s390_num_regs_3264, | |
706 | s390_regmap_3264 | |
707 | }; | |
708 | ||
709 | static struct regsets_info s390_regsets_info_3264 = | |
710 | { | |
711 | s390_regsets, /* regsets */ | |
712 | 0, /* num_regsets */ | |
713 | NULL, /* disabled_regsets */ | |
714 | }; | |
715 | ||
716 | static struct regs_info regs_info_3264 = | |
717 | { | |
718 | NULL, /* regset_bitmap */ | |
719 | &s390_usrregs_info_3264, | |
720 | &s390_regsets_info_3264 | |
721 | }; | |
3aee8918 | 722 | |
aa8d21c9 TBA |
723 | const regs_info * |
724 | s390_target::get_regs_info () | |
3aee8918 | 725 | { |
3aee8918 PA |
726 | if (have_hwcap_s390_high_gprs) |
727 | { | |
ab503087 | 728 | #ifdef __s390x__ |
3aee8918 PA |
729 | const struct target_desc *tdesc = current_process ()->tdesc; |
730 | ||
731 | if (register_size (tdesc, 0) == 4) | |
732 | return ®s_info_3264; | |
ab503087 MK |
733 | #else |
734 | return ®s_info_3264; | |
3aee8918 | 735 | #endif |
ab503087 | 736 | } |
aa8d21c9 | 737 | return &myregs_info; |
3aee8918 | 738 | } |
b0ded00b | 739 | |
a4105d04 MK |
740 | /* The "supports_tracepoints" linux_target_ops method. */ |
741 | ||
742 | static int | |
743 | s390_supports_tracepoints (void) | |
744 | { | |
745 | return 1; | |
746 | } | |
747 | ||
abd9baf9 MK |
748 | /* Implementation of linux_target_ops method "get_thread_area". */ |
749 | ||
750 | static int | |
751 | s390_get_thread_area (int lwpid, CORE_ADDR *addrp) | |
752 | { | |
753 | CORE_ADDR res = ptrace (PTRACE_PEEKUSER, lwpid, (long) PT_ACR0, (long) 0); | |
754 | #ifdef __s390x__ | |
755 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
756 | ||
757 | if (register_size (regcache->tdesc, 0) == 4) | |
758 | res &= 0xffffffffull; | |
759 | #endif | |
760 | *addrp = res; | |
761 | return 0; | |
762 | } | |
763 | ||
764 | ||
765 | /* Fast tracepoint support. | |
766 | ||
767 | The register save area on stack is identical for all targets: | |
768 | ||
769 | 0x000+i*0x10: VR0-VR31 | |
770 | 0x200+i*8: GR0-GR15 | |
771 | 0x280+i*4: AR0-AR15 | |
772 | 0x2c0: PSWM [64-bit] | |
773 | 0x2c8: PSWA [64-bit] | |
774 | 0x2d0: FPC | |
775 | ||
776 | If we're on 31-bit linux, we just don't store the high parts of the GPRs. | |
777 | Likewise, if there's no VX support, we just store the FRs into the slots | |
778 | of low VR halves. The agent code is responsible for rearranging that | |
779 | into regcache. */ | |
780 | ||
781 | /* Code sequence saving GPRs for 31-bit target with no high GPRs. There's | |
782 | one trick used at the very beginning: since there's no way to allocate | |
783 | stack space without destroying CC (lay instruction can do it, but it's | |
784 | only supported on later CPUs), we take 4 different execution paths for | |
785 | every possible value of CC, allocate stack space, save %r0, stuff the | |
786 | CC value in %r0 (shifted to match its position in PSWM high word), | |
787 | then branch to common path. */ | |
788 | ||
789 | static const unsigned char s390_ft_entry_gpr_esa[] = { | |
790 | 0xa7, 0x14, 0x00, 0x1e, /* jo .Lcc3 */ | |
791 | 0xa7, 0x24, 0x00, 0x14, /* jh .Lcc2 */ | |
792 | 0xa7, 0x44, 0x00, 0x0a, /* jl .Lcc1 */ | |
793 | /* CC = 0 */ | |
794 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
795 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
796 | 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */ | |
797 | 0xa7, 0xf4, 0x00, 0x18, /* j .Lccdone */ | |
798 | /* .Lcc1: */ | |
799 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
800 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
801 | 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */ | |
802 | 0xa7, 0xf4, 0x00, 0x10, /* j .Lccdone */ | |
803 | /* .Lcc2: */ | |
804 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
805 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
806 | 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */ | |
807 | 0xa7, 0xf4, 0x00, 0x08, /* j .Lccdone */ | |
808 | /* .Lcc3: */ | |
809 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
810 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
811 | 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */ | |
812 | /* .Lccdone: */ | |
813 | 0x50, 0x10, 0xf2, 0x0c, /* st %r1, 0x20c(%r15) */ | |
814 | 0x50, 0x20, 0xf2, 0x14, /* st %r2, 0x214(%r15) */ | |
815 | 0x50, 0x30, 0xf2, 0x1c, /* st %r3, 0x21c(%r15) */ | |
816 | 0x50, 0x40, 0xf2, 0x24, /* st %r4, 0x224(%r15) */ | |
817 | 0x50, 0x50, 0xf2, 0x2c, /* st %r5, 0x22c(%r15) */ | |
818 | 0x50, 0x60, 0xf2, 0x34, /* st %r6, 0x234(%r15) */ | |
819 | 0x50, 0x70, 0xf2, 0x3c, /* st %r7, 0x23c(%r15) */ | |
820 | 0x50, 0x80, 0xf2, 0x44, /* st %r8, 0x244(%r15) */ | |
821 | 0x50, 0x90, 0xf2, 0x4c, /* st %r9, 0x24c(%r15) */ | |
822 | 0x50, 0xa0, 0xf2, 0x54, /* st %r10, 0x254(%r15) */ | |
823 | 0x50, 0xb0, 0xf2, 0x5c, /* st %r11, 0x25c(%r15) */ | |
824 | 0x50, 0xc0, 0xf2, 0x64, /* st %r12, 0x264(%r15) */ | |
825 | 0x50, 0xd0, 0xf2, 0x6c, /* st %r13, 0x26c(%r15) */ | |
826 | 0x50, 0xe0, 0xf2, 0x74, /* st %r14, 0x274(%r15) */ | |
827 | /* Compute original value of %r15 and store it. We use ahi instead | |
828 | of la to preserve the whole value, and not just the low 31 bits. | |
829 | This is not particularly important here, but essential in the | |
830 | zarch case where someone might be using the high word of %r15 | |
831 | as an extra register. */ | |
832 | 0x18, 0x1f, /* lr %r1, %r15 */ | |
833 | 0xa7, 0x1a, 0x03, 0x00, /* ahi %r1, 0x300 */ | |
834 | 0x50, 0x10, 0xf2, 0x7c, /* st %r1, 0x27c(%r15) */ | |
835 | }; | |
836 | ||
837 | /* Code sequence saving GPRs for 31-bit target with high GPRs and for 64-bit | |
838 | target. Same as above, except this time we can use load/store multiple, | |
839 | since the 64-bit regs are tightly packed. */ | |
840 | ||
841 | static const unsigned char s390_ft_entry_gpr_zarch[] = { | |
842 | 0xa7, 0x14, 0x00, 0x21, /* jo .Lcc3 */ | |
843 | 0xa7, 0x24, 0x00, 0x16, /* jh .Lcc2 */ | |
844 | 0xa7, 0x44, 0x00, 0x0b, /* jl .Lcc1 */ | |
845 | /* CC = 0 */ | |
846 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
847 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
848 | 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */ | |
849 | 0xa7, 0xf4, 0x00, 0x1b, /* j .Lccdone */ | |
850 | /* .Lcc1: */ | |
851 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
852 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
853 | 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */ | |
854 | 0xa7, 0xf4, 0x00, 0x12, /* j .Lccdone */ | |
855 | /* .Lcc2: */ | |
856 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
857 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
858 | 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */ | |
859 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lccdone */ | |
860 | /* .Lcc3: */ | |
861 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
862 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
863 | 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */ | |
864 | /* .Lccdone: */ | |
865 | 0xb9, 0x04, 0x00, 0x1f, /* lgr %r1, %r15 */ | |
866 | 0xa7, 0x1b, 0x03, 0x00, /* aghi %r1, 0x300 */ | |
867 | 0xe3, 0x10, 0xf2, 0x78, 0x00, 0x24, /* stg %r1, 0x278(%r15) */ | |
868 | }; | |
869 | ||
870 | /* Code sequence saving ARs, PSWM and FPC. PSWM has to be assembled from | |
871 | current PSWM (read by epsw) and CC from entry (in %r0). */ | |
872 | ||
873 | static const unsigned char s390_ft_entry_misc[] = { | |
874 | 0x9b, 0x0f, 0xf2, 0x80, /* stam %a0, %a15, 0x20(%%r15) */ | |
875 | 0xb9, 0x8d, 0x00, 0x23, /* epsw %r2, %r3 */ | |
876 | 0xa7, 0x18, 0xcf, 0xff, /* lhi %r1, ~0x3000 */ | |
877 | 0x14, 0x21, /* nr %r2, %r1 */ | |
878 | 0x16, 0x20, /* or %r2, %r0 */ | |
879 | 0x50, 0x20, 0xf2, 0xc0, /* st %r2, 0x2c0(%r15) */ | |
880 | 0x50, 0x30, 0xf2, 0xc4, /* st %r3, 0x2c4(%r15) */ | |
881 | 0xb2, 0x9c, 0xf2, 0xd0, /* stfpc 0x2d0(%r15) */ | |
882 | }; | |
883 | ||
884 | /* Code sequence saving FRs, used if VX not supported. */ | |
885 | ||
886 | static const unsigned char s390_ft_entry_fr[] = { | |
887 | 0x60, 0x00, 0xf0, 0x00, /* std %f0, 0x000(%r15) */ | |
888 | 0x60, 0x10, 0xf0, 0x10, /* std %f1, 0x010(%r15) */ | |
889 | 0x60, 0x20, 0xf0, 0x20, /* std %f2, 0x020(%r15) */ | |
890 | 0x60, 0x30, 0xf0, 0x30, /* std %f3, 0x030(%r15) */ | |
891 | 0x60, 0x40, 0xf0, 0x40, /* std %f4, 0x040(%r15) */ | |
892 | 0x60, 0x50, 0xf0, 0x50, /* std %f5, 0x050(%r15) */ | |
893 | 0x60, 0x60, 0xf0, 0x60, /* std %f6, 0x060(%r15) */ | |
894 | 0x60, 0x70, 0xf0, 0x70, /* std %f7, 0x070(%r15) */ | |
895 | 0x60, 0x80, 0xf0, 0x80, /* std %f8, 0x080(%r15) */ | |
896 | 0x60, 0x90, 0xf0, 0x90, /* std %f9, 0x090(%r15) */ | |
897 | 0x60, 0xa0, 0xf0, 0xa0, /* std %f10, 0x0a0(%r15) */ | |
898 | 0x60, 0xb0, 0xf0, 0xb0, /* std %f11, 0x0b0(%r15) */ | |
899 | 0x60, 0xc0, 0xf0, 0xc0, /* std %f12, 0x0c0(%r15) */ | |
900 | 0x60, 0xd0, 0xf0, 0xd0, /* std %f13, 0x0d0(%r15) */ | |
901 | 0x60, 0xe0, 0xf0, 0xe0, /* std %f14, 0x0e0(%r15) */ | |
902 | 0x60, 0xf0, 0xf0, 0xf0, /* std %f15, 0x0f0(%r15) */ | |
903 | }; | |
904 | ||
905 | /* Code sequence saving VRs, used if VX not supported. */ | |
906 | ||
907 | static const unsigned char s390_ft_entry_vr[] = { | |
908 | 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x3e, /* vstm %v0, %v15, 0x000(%r15) */ | |
909 | 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x3e, /* vstm %v16, %v31, 0x100(%r15) */ | |
910 | }; | |
911 | ||
912 | /* Code sequence doing the collection call for 31-bit target. %r1 contains | |
913 | the address of the literal pool. */ | |
914 | ||
915 | static const unsigned char s390_ft_main_31[] = { | |
916 | /* Load the literals into registers. */ | |
917 | 0x58, 0x50, 0x10, 0x00, /* l %r5, 0x0(%r1) */ | |
918 | 0x58, 0x20, 0x10, 0x04, /* l %r2, 0x4(%r1) */ | |
919 | 0x58, 0x40, 0x10, 0x08, /* l %r4, 0x8(%r1) */ | |
920 | 0x58, 0x60, 0x10, 0x0c, /* l %r6, 0xc(%r1) */ | |
921 | /* Save original PSWA (tracepoint address | 0x80000000). */ | |
922 | 0x50, 0x50, 0xf2, 0xcc, /* st %r5, 0x2cc(%r15) */ | |
923 | /* Construct a collecting_t object at %r15+0x2e0. */ | |
924 | 0x50, 0x20, 0xf2, 0xe0, /* st %r2, 0x2e0(%r15) */ | |
925 | 0x9b, 0x00, 0xf2, 0xe4, /* stam %a0, %a0, 0x2e4(%r15) */ | |
926 | /* Move its address to %r0. */ | |
927 | 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */ | |
928 | /* Take the lock. */ | |
929 | /* .Lloop: */ | |
930 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */ | |
931 | 0xba, 0x10, 0x60, 0x00, /* cs %r1, %r0, 0(%r6) */ | |
932 | 0xa7, 0x74, 0xff, 0xfc, /* jne .Lloop */ | |
933 | /* Address of the register save block to %r3. */ | |
934 | 0x18, 0x3f, /* lr %r3, %r15 */ | |
935 | /* Make a stack frame, so that we can call the collector. */ | |
936 | 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */ | |
937 | /* Call it. */ | |
938 | 0x0d, 0xe4, /* basr %r14, %r4 */ | |
939 | /* And get rid of the stack frame again. */ | |
940 | 0x41, 0xf0, 0xf0, 0x60, /* la %r15, 0x60(%r15) */ | |
941 | /* Leave the lock. */ | |
942 | 0x07, 0xf0, /* br %r0 */ | |
943 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */ | |
944 | 0x50, 0x10, 0x60, 0x00, /* st %t1, 0(%r6) */ | |
945 | }; | |
946 | ||
947 | /* Code sequence doing the collection call for 64-bit target. %r1 contains | |
948 | the address of the literal pool. */ | |
949 | ||
950 | static const unsigned char s390_ft_main_64[] = { | |
951 | /* Load the literals into registers. */ | |
952 | 0xe3, 0x50, 0x10, 0x00, 0x00, 0x04, /* lg %r5, 0x00(%r1) */ | |
953 | 0xe3, 0x20, 0x10, 0x08, 0x00, 0x04, /* lg %r2, 0x08(%r1) */ | |
954 | 0xe3, 0x40, 0x10, 0x10, 0x00, 0x04, /* lg %r4, 0x10(%r1) */ | |
955 | 0xe3, 0x60, 0x10, 0x18, 0x00, 0x04, /* lg %r6, 0x18(%r1) */ | |
956 | /* Save original PSWA (tracepoint address). */ | |
957 | 0xe3, 0x50, 0xf2, 0xc8, 0x00, 0x24, /* stg %r5, 0x2c8(%r15) */ | |
958 | /* Construct a collecting_t object at %r15+0x2e0. */ | |
959 | 0xe3, 0x20, 0xf2, 0xe0, 0x00, 0x24, /* stg %r2, 0x2e0(%r15) */ | |
960 | 0x9b, 0x01, 0xf2, 0xe8, /* stam %a0, %a1, 0x2e8(%r15) */ | |
961 | /* Move its address to %r0. */ | |
962 | 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */ | |
963 | /* Take the lock. */ | |
964 | /* .Lloop: */ | |
965 | 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */ | |
966 | 0xeb, 0x10, 0x60, 0x00, 0x00, 0x30, /* csg %r1, %r0, 0(%r6) */ | |
967 | 0xa7, 0x74, 0xff, 0xfb, /* jne .Lloop */ | |
968 | /* Address of the register save block to %r3. */ | |
969 | 0xb9, 0x04, 0x00, 0x3f, /* lgr %r3, %r15 */ | |
970 | /* Make a stack frame, so that we can call the collector. */ | |
971 | 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */ | |
972 | /* Call it. */ | |
973 | 0x0d, 0xe4, /* basr %r14, %r4 */ | |
974 | /* And get rid of the stack frame again. */ | |
975 | 0x41, 0xf0, 0xf0, 0xa0, /* la %r15, 0xa0(%r15) */ | |
976 | /* Leave the lock. */ | |
977 | 0x07, 0xf0, /* br %r0 */ | |
978 | 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */ | |
979 | 0xe3, 0x10, 0x60, 0x00, 0x00, 0x24, /* stg %t1, 0(%r6) */ | |
980 | }; | |
981 | ||
982 | /* Code sequence restoring FRs, for targets with no VX support. */ | |
983 | ||
984 | static const unsigned char s390_ft_exit_fr[] = { | |
985 | 0x68, 0x00, 0xf0, 0x00, /* ld %f0, 0x000(%r15) */ | |
986 | 0x68, 0x10, 0xf0, 0x10, /* ld %f1, 0x010(%r15) */ | |
987 | 0x68, 0x20, 0xf0, 0x20, /* ld %f2, 0x020(%r15) */ | |
988 | 0x68, 0x30, 0xf0, 0x30, /* ld %f3, 0x030(%r15) */ | |
989 | 0x68, 0x40, 0xf0, 0x40, /* ld %f4, 0x040(%r15) */ | |
990 | 0x68, 0x50, 0xf0, 0x50, /* ld %f5, 0x050(%r15) */ | |
991 | 0x68, 0x60, 0xf0, 0x60, /* ld %f6, 0x060(%r15) */ | |
992 | 0x68, 0x70, 0xf0, 0x70, /* ld %f7, 0x070(%r15) */ | |
993 | 0x68, 0x80, 0xf0, 0x80, /* ld %f8, 0x080(%r15) */ | |
994 | 0x68, 0x90, 0xf0, 0x90, /* ld %f9, 0x090(%r15) */ | |
995 | 0x68, 0xa0, 0xf0, 0xa0, /* ld %f10, 0x0a0(%r15) */ | |
996 | 0x68, 0xb0, 0xf0, 0xb0, /* ld %f11, 0x0b0(%r15) */ | |
997 | 0x68, 0xc0, 0xf0, 0xc0, /* ld %f12, 0x0c0(%r15) */ | |
998 | 0x68, 0xd0, 0xf0, 0xd0, /* ld %f13, 0x0d0(%r15) */ | |
999 | 0x68, 0xe0, 0xf0, 0xe0, /* ld %f14, 0x0e0(%r15) */ | |
1000 | 0x68, 0xf0, 0xf0, 0xf0, /* ld %f15, 0x0f0(%r15) */ | |
1001 | }; | |
1002 | ||
1003 | /* Code sequence restoring VRs. */ | |
1004 | ||
1005 | static const unsigned char s390_ft_exit_vr[] = { | |
1006 | 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x36, /* vlm %v0, %v15, 0x000(%r15) */ | |
1007 | 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x36, /* vlm %v16, %v31, 0x100(%r15) */ | |
1008 | }; | |
1009 | ||
1010 | /* Code sequence restoring misc registers. As for PSWM, only CC should be | |
1011 | modified by C code, so we use the alr instruction to restore it by | |
1012 | manufacturing an operand that'll result in the original flags. */ | |
1013 | ||
1014 | static const unsigned char s390_ft_exit_misc[] = { | |
1015 | 0xb2, 0x9d, 0xf2, 0xd0, /* lfpc 0x2d0(%r15) */ | |
1016 | 0x58, 0x00, 0xf2, 0xc0, /* l %r0, 0x2c0(%r15) */ | |
1017 | /* Extract CC to high 2 bits of %r0. */ | |
1018 | 0x88, 0x00, 0x00, 0x0c, /* srl %r0, 12 */ | |
1019 | 0x89, 0x00, 0x00, 0x1e, /* sll %r0, 30 */ | |
1020 | /* Add %r0 to itself. Result will be nonzero iff CC bit 0 is set, and | |
1021 | will have carry iff CC bit 1 is set - resulting in the same flags | |
1022 | as the original. */ | |
1023 | 0x1e, 0x00, /* alr %r0, %r0 */ | |
1024 | 0x9a, 0x0f, 0xf2, 0x80, /* lam %a0, %a15, 0x280(%r15) */ | |
1025 | }; | |
1026 | ||
1027 | /* Code sequence restoring GPRs, for 31-bit targets with no high GPRs. */ | |
1028 | ||
1029 | static const unsigned char s390_ft_exit_gpr_esa[] = { | |
1030 | 0x58, 0x00, 0xf2, 0x04, /* l %r0, 0x204(%r15) */ | |
1031 | 0x58, 0x10, 0xf2, 0x0c, /* l %r1, 0x20c(%r15) */ | |
1032 | 0x58, 0x20, 0xf2, 0x14, /* l %r2, 0x214(%r15) */ | |
1033 | 0x58, 0x30, 0xf2, 0x1c, /* l %r3, 0x21c(%r15) */ | |
1034 | 0x58, 0x40, 0xf2, 0x24, /* l %r4, 0x224(%r15) */ | |
1035 | 0x58, 0x50, 0xf2, 0x2c, /* l %r5, 0x22c(%r15) */ | |
1036 | 0x58, 0x60, 0xf2, 0x34, /* l %r6, 0x234(%r15) */ | |
1037 | 0x58, 0x70, 0xf2, 0x3c, /* l %r7, 0x23c(%r15) */ | |
1038 | 0x58, 0x80, 0xf2, 0x44, /* l %r8, 0x244(%r15) */ | |
1039 | 0x58, 0x90, 0xf2, 0x4c, /* l %r9, 0x24c(%r15) */ | |
1040 | 0x58, 0xa0, 0xf2, 0x54, /* l %r10, 0x254(%r15) */ | |
1041 | 0x58, 0xb0, 0xf2, 0x5c, /* l %r11, 0x25c(%r15) */ | |
1042 | 0x58, 0xc0, 0xf2, 0x64, /* l %r12, 0x264(%r15) */ | |
1043 | 0x58, 0xd0, 0xf2, 0x6c, /* l %r13, 0x26c(%r15) */ | |
1044 | 0x58, 0xe0, 0xf2, 0x74, /* l %r14, 0x274(%r15) */ | |
1045 | 0x58, 0xf0, 0xf2, 0x7c, /* l %r15, 0x27c(%r15) */ | |
1046 | }; | |
1047 | ||
1048 | /* Code sequence restoring GPRs, for 64-bit targets and 31-bit targets | |
1049 | with high GPRs. */ | |
1050 | ||
1051 | static const unsigned char s390_ft_exit_gpr_zarch[] = { | |
1052 | 0xeb, 0x0f, 0xf2, 0x00, 0x00, 0x04, /* lmg %r0, %r15, 0x200(%r15) */ | |
1053 | }; | |
1054 | ||
1055 | /* Writes instructions to target, updating the to pointer. */ | |
1056 | ||
1057 | static void | |
1058 | append_insns (CORE_ADDR *to, size_t len, const unsigned char *buf) | |
1059 | { | |
4196ab2a | 1060 | target_write_memory (*to, buf, len); |
abd9baf9 MK |
1061 | *to += len; |
1062 | } | |
1063 | ||
1064 | /* Relocates an instruction from oldloc to *to, updating to. */ | |
1065 | ||
1066 | static int | |
1067 | s390_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc, int is_64) | |
1068 | { | |
1069 | gdb_byte buf[6]; | |
1070 | int ilen; | |
1071 | int op2; | |
1072 | /* 0: no fixup, 1: PC16DBL fixup, 2: PC32DBL fixup. */ | |
1073 | int mode = 0; | |
1074 | int is_bras = 0; | |
1075 | read_inferior_memory (oldloc, buf, sizeof buf); | |
1076 | if (buf[0] < 0x40) | |
1077 | ilen = 2; | |
1078 | else if (buf[0] < 0xc0) | |
1079 | ilen = 4; | |
1080 | else | |
1081 | ilen = 6; | |
1082 | switch (buf[0]) | |
1083 | { | |
1084 | case 0x05: /* BALR */ | |
1085 | case 0x0c: /* BASSM */ | |
1086 | case 0x0d: /* BASR */ | |
1087 | case 0x45: /* BAL */ | |
1088 | case 0x4d: /* BAS */ | |
1089 | /* These save a return address and mess around with registers. | |
1090 | We can't relocate them. */ | |
1091 | return 1; | |
1092 | case 0x84: /* BRXH */ | |
1093 | case 0x85: /* BRXLE */ | |
1094 | mode = 1; | |
1095 | break; | |
1096 | case 0xa7: | |
1097 | op2 = buf[1] & 0xf; | |
1098 | /* BRC, BRAS, BRCT, BRCTG */ | |
1099 | if (op2 >= 4 && op2 <= 7) | |
1100 | mode = 1; | |
1101 | /* BRAS */ | |
1102 | if (op2 == 5) | |
1103 | is_bras = 1; | |
1104 | break; | |
1105 | case 0xc0: | |
1106 | op2 = buf[1] & 0xf; | |
1107 | /* LARL, BRCL, BRASL */ | |
1108 | if (op2 == 0 || op2 == 4 || op2 == 5) | |
1109 | mode = 2; | |
1110 | /* BRASL */ | |
1111 | if (op2 == 5) | |
1112 | is_bras = 1; | |
1113 | break; | |
1114 | case 0xc4: | |
1115 | case 0xc6: | |
1116 | /* PC-relative addressing instructions. */ | |
1117 | mode = 2; | |
1118 | break; | |
1119 | case 0xc5: /* BPRP */ | |
1120 | case 0xc7: /* BPP */ | |
1121 | /* Branch prediction - just skip it. */ | |
1122 | return 0; | |
1123 | case 0xcc: | |
1124 | op2 = buf[1] & 0xf; | |
1125 | /* BRCTH */ | |
1126 | if (op2 == 6) | |
1127 | mode = 2; | |
1128 | break; | |
1129 | case 0xec: | |
1130 | op2 = buf[5]; | |
1131 | switch (op2) | |
1132 | { | |
1133 | case 0x44: /* BRXHG */ | |
1134 | case 0x45: /* BRXLG */ | |
1135 | case 0x64: /* CGRJ */ | |
1136 | case 0x65: /* CLGRJ */ | |
1137 | case 0x76: /* CRJ */ | |
1138 | case 0x77: /* CLRJ */ | |
1139 | mode = 1; | |
1140 | break; | |
1141 | } | |
1142 | break; | |
1143 | } | |
1144 | ||
1145 | if (mode != 0) | |
1146 | { | |
1147 | /* We'll have to relocate an instruction with a PC-relative field. | |
1148 | First, compute the target. */ | |
1149 | int64_t loffset = 0; | |
1150 | CORE_ADDR target; | |
1151 | if (mode == 1) | |
1152 | { | |
1153 | int16_t soffset = 0; | |
1154 | memcpy (&soffset, buf + 2, 2); | |
1155 | loffset = soffset; | |
1156 | } | |
1157 | else if (mode == 2) | |
1158 | { | |
1159 | int32_t soffset = 0; | |
1160 | memcpy (&soffset, buf + 2, 4); | |
1161 | loffset = soffset; | |
1162 | } | |
1163 | target = oldloc + loffset * 2; | |
1164 | if (!is_64) | |
1165 | target &= 0x7fffffff; | |
1166 | ||
1167 | if (is_bras) | |
1168 | { | |
1169 | /* BRAS or BRASL was used. We cannot just relocate those, since | |
1170 | they save the return address in a register. We can, however, | |
1171 | replace them with a LARL+JG sequence. */ | |
1172 | ||
1173 | /* Make the LARL. */ | |
1174 | int32_t soffset; | |
1175 | buf[0] = 0xc0; | |
1176 | buf[1] &= 0xf0; | |
1177 | loffset = oldloc + ilen - *to; | |
1178 | loffset >>= 1; | |
1179 | soffset = loffset; | |
1180 | if (soffset != loffset && is_64) | |
1181 | return 1; | |
1182 | memcpy (buf + 2, &soffset, 4); | |
1183 | append_insns (to, 6, buf); | |
1184 | ||
1185 | /* Note: this is not fully correct. In 31-bit mode, LARL will write | |
1186 | an address with the top bit 0, while BRAS/BRASL will write it | |
1187 | with top bit 1. It should not matter much, since linux compilers | |
1188 | use BR and not BSM to return from functions, but it could confuse | |
1189 | some poor stack unwinder. */ | |
1190 | ||
1191 | /* We'll now be writing a JG. */ | |
1192 | mode = 2; | |
1193 | buf[0] = 0xc0; | |
1194 | buf[1] = 0xf4; | |
1195 | ilen = 6; | |
1196 | } | |
1197 | ||
1198 | /* Compute the new offset and write it to the buffer. */ | |
1199 | loffset = target - *to; | |
1200 | loffset >>= 1; | |
1201 | ||
1202 | if (mode == 1) | |
1203 | { | |
1204 | int16_t soffset = loffset; | |
1205 | if (soffset != loffset) | |
1206 | return 1; | |
1207 | memcpy (buf + 2, &soffset, 2); | |
1208 | } | |
1209 | else if (mode == 2) | |
1210 | { | |
1211 | int32_t soffset = loffset; | |
1212 | if (soffset != loffset && is_64) | |
1213 | return 1; | |
1214 | memcpy (buf + 2, &soffset, 4); | |
1215 | } | |
1216 | } | |
1217 | append_insns (to, ilen, buf); | |
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | /* Implementation of linux_target_ops method | |
1222 | "install_fast_tracepoint_jump_pad". */ | |
1223 | ||
1224 | static int | |
1225 | s390_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint, | |
1226 | CORE_ADDR tpaddr, | |
1227 | CORE_ADDR collector, | |
1228 | CORE_ADDR lockaddr, | |
1229 | ULONGEST orig_size, | |
1230 | CORE_ADDR *jump_entry, | |
1231 | CORE_ADDR *trampoline, | |
1232 | ULONGEST *trampoline_size, | |
1233 | unsigned char *jjump_pad_insn, | |
1234 | ULONGEST *jjump_pad_insn_size, | |
1235 | CORE_ADDR *adjusted_insn_addr, | |
1236 | CORE_ADDR *adjusted_insn_addr_end, | |
1237 | char *err) | |
1238 | { | |
1239 | int i; | |
1240 | int64_t loffset; | |
1241 | int32_t offset; | |
1242 | unsigned char jbuf[6] = { 0xc0, 0xf4, 0, 0, 0, 0 }; /* jg ... */ | |
1243 | CORE_ADDR buildaddr = *jump_entry; | |
1244 | #ifdef __s390x__ | |
1245 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
1246 | int is_64 = register_size (regcache->tdesc, 0) == 8; | |
1247 | int is_zarch = is_64 || have_hwcap_s390_high_gprs; | |
1248 | int has_vx = have_hwcap_s390_vx; | |
1249 | #else | |
1250 | int is_64 = 0, is_zarch = 0, has_vx = 0; | |
1251 | #endif | |
1252 | CORE_ADDR literals[4] = { | |
1253 | tpaddr, | |
1254 | tpoint, | |
1255 | collector, | |
1256 | lockaddr, | |
1257 | }; | |
1258 | ||
1259 | /* First, store the GPRs. */ | |
1260 | if (is_zarch) | |
1261 | append_insns (&buildaddr, sizeof s390_ft_entry_gpr_zarch, | |
1262 | s390_ft_entry_gpr_zarch); | |
1263 | else | |
1264 | append_insns (&buildaddr, sizeof s390_ft_entry_gpr_esa, | |
1265 | s390_ft_entry_gpr_esa); | |
1266 | ||
1267 | /* Second, misc registers (ARs, PSWM, FPC). PSWA will be stored below. */ | |
1268 | append_insns (&buildaddr, sizeof s390_ft_entry_misc, s390_ft_entry_misc); | |
1269 | ||
1270 | /* Third, FRs or VRs. */ | |
1271 | if (has_vx) | |
1272 | append_insns (&buildaddr, sizeof s390_ft_entry_vr, s390_ft_entry_vr); | |
1273 | else | |
1274 | append_insns (&buildaddr, sizeof s390_ft_entry_fr, s390_ft_entry_fr); | |
1275 | ||
1276 | /* Now, the main part of code - store PSWA, take lock, call collector, | |
1277 | leave lock. First, we'll need to fetch 4 literals. */ | |
1278 | if (is_64) { | |
1279 | unsigned char buf[] = { | |
1280 | 0x07, 0x07, /* nopr %r7 */ | |
1281 | 0x07, 0x07, /* nopr %r7 */ | |
1282 | 0x07, 0x07, /* nopr %r7 */ | |
1283 | 0xa7, 0x15, 0x00, 0x12, /* bras %r1, .Lend */ | |
1284 | 0, 0, 0, 0, 0, 0, 0, 0, /* tpaddr */ | |
1285 | 0, 0, 0, 0, 0, 0, 0, 0, /* tpoint */ | |
1286 | 0, 0, 0, 0, 0, 0, 0, 0, /* collector */ | |
1287 | 0, 0, 0, 0, 0, 0, 0, 0, /* lockaddr */ | |
1288 | /* .Lend: */ | |
1289 | }; | |
1290 | /* Find the proper start place in buf, so that literals will be | |
1291 | aligned. */ | |
1292 | int bufpos = (buildaddr + 2) & 7; | |
1293 | /* Stuff the literals into the buffer. */ | |
1294 | for (i = 0; i < 4; i++) { | |
1295 | uint64_t lit = literals[i]; | |
1296 | memcpy (&buf[sizeof buf - 32 + i * 8], &lit, 8); | |
1297 | } | |
1298 | append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos); | |
1299 | append_insns (&buildaddr, sizeof s390_ft_main_64, s390_ft_main_64); | |
1300 | } else { | |
1301 | unsigned char buf[] = { | |
1302 | 0x07, 0x07, /* nopr %r7 */ | |
1303 | 0xa7, 0x15, 0x00, 0x0a, /* bras %r1, .Lend */ | |
1304 | 0, 0, 0, 0, /* tpaddr */ | |
1305 | 0, 0, 0, 0, /* tpoint */ | |
1306 | 0, 0, 0, 0, /* collector */ | |
1307 | 0, 0, 0, 0, /* lockaddr */ | |
1308 | /* .Lend: */ | |
1309 | }; | |
1310 | /* Find the proper start place in buf, so that literals will be | |
1311 | aligned. */ | |
1312 | int bufpos = (buildaddr + 2) & 3; | |
1313 | /* First literal will be saved as the PSWA, make sure it has the high bit | |
1314 | set. */ | |
1315 | literals[0] |= 0x80000000; | |
1316 | /* Stuff the literals into the buffer. */ | |
1317 | for (i = 0; i < 4; i++) { | |
1318 | uint32_t lit = literals[i]; | |
1319 | memcpy (&buf[sizeof buf - 16 + i * 4], &lit, 4); | |
1320 | } | |
1321 | append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos); | |
1322 | append_insns (&buildaddr, sizeof s390_ft_main_31, s390_ft_main_31); | |
1323 | } | |
1324 | ||
1325 | /* Restore FRs or VRs. */ | |
1326 | if (has_vx) | |
1327 | append_insns (&buildaddr, sizeof s390_ft_exit_vr, s390_ft_exit_vr); | |
1328 | else | |
1329 | append_insns (&buildaddr, sizeof s390_ft_exit_fr, s390_ft_exit_fr); | |
1330 | ||
1331 | /* Restore misc registers. */ | |
1332 | append_insns (&buildaddr, sizeof s390_ft_exit_misc, s390_ft_exit_misc); | |
1333 | ||
1334 | /* Restore the GPRs. */ | |
1335 | if (is_zarch) | |
1336 | append_insns (&buildaddr, sizeof s390_ft_exit_gpr_zarch, | |
1337 | s390_ft_exit_gpr_zarch); | |
1338 | else | |
1339 | append_insns (&buildaddr, sizeof s390_ft_exit_gpr_esa, | |
1340 | s390_ft_exit_gpr_esa); | |
1341 | ||
1342 | /* Now, adjust the original instruction to execute in the jump | |
1343 | pad. */ | |
1344 | *adjusted_insn_addr = buildaddr; | |
1345 | if (s390_relocate_instruction (&buildaddr, tpaddr, is_64)) | |
1346 | { | |
1347 | sprintf (err, "E.Could not relocate instruction for tracepoint."); | |
1348 | return 1; | |
1349 | } | |
1350 | *adjusted_insn_addr_end = buildaddr; | |
1351 | ||
1352 | /* Finally, write a jump back to the program. */ | |
1353 | ||
1354 | loffset = (tpaddr + orig_size) - buildaddr; | |
1355 | loffset >>= 1; | |
1356 | offset = loffset; | |
1357 | if (is_64 && offset != loffset) | |
1358 | { | |
1359 | sprintf (err, | |
1360 | "E.Jump back from jump pad too far from tracepoint " | |
1361 | "(offset 0x%" PRIx64 " > int33).", loffset); | |
1362 | return 1; | |
1363 | } | |
1364 | memcpy (jbuf + 2, &offset, 4); | |
1365 | append_insns (&buildaddr, sizeof jbuf, jbuf); | |
1366 | ||
1367 | /* The jump pad is now built. Wire in a jump to our jump pad. This | |
1368 | is always done last (by our caller actually), so that we can | |
1369 | install fast tracepoints with threads running. This relies on | |
1370 | the agent's atomic write support. */ | |
1371 | loffset = *jump_entry - tpaddr; | |
1372 | loffset >>= 1; | |
1373 | offset = loffset; | |
1374 | if (is_64 && offset != loffset) | |
1375 | { | |
1376 | sprintf (err, | |
1377 | "E.Jump back from jump pad too far from tracepoint " | |
1378 | "(offset 0x%" PRIx64 " > int33).", loffset); | |
1379 | return 1; | |
1380 | } | |
1381 | memcpy (jbuf + 2, &offset, 4); | |
1382 | memcpy (jjump_pad_insn, jbuf, sizeof jbuf); | |
1383 | *jjump_pad_insn_size = sizeof jbuf; | |
1384 | ||
1385 | /* Return the end address of our pad. */ | |
1386 | *jump_entry = buildaddr; | |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | /* Implementation of linux_target_ops method | |
1392 | "get_min_fast_tracepoint_insn_len". */ | |
1393 | ||
1394 | static int | |
1395 | s390_get_min_fast_tracepoint_insn_len (void) | |
1396 | { | |
1397 | /* We only support using 6-byte jumps to reach the tracepoint code. | |
1398 | If the tracepoint buffer were allocated sufficiently close (64kiB) | |
1399 | to the executable code, and the traced instruction itself was close | |
1400 | enough to the beginning, we could use 4-byte jumps, but this doesn't | |
1401 | seem to be worth the effort. */ | |
1402 | return 6; | |
1403 | } | |
1404 | ||
1405 | /* Implementation of linux_target_ops method "get_ipa_tdesc_idx". */ | |
1406 | ||
1407 | static int | |
1408 | s390_get_ipa_tdesc_idx (void) | |
1409 | { | |
1410 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
1411 | const struct target_desc *tdesc = regcache->tdesc; | |
1412 | ||
1413 | #ifdef __s390x__ | |
1414 | if (tdesc == tdesc_s390x_linux64) | |
1415 | return S390_TDESC_64; | |
1416 | if (tdesc == tdesc_s390x_linux64v1) | |
1417 | return S390_TDESC_64V1; | |
1418 | if (tdesc == tdesc_s390x_linux64v2) | |
1419 | return S390_TDESC_64V2; | |
1420 | if (tdesc == tdesc_s390x_te_linux64) | |
1421 | return S390_TDESC_TE; | |
1422 | if (tdesc == tdesc_s390x_vx_linux64) | |
1423 | return S390_TDESC_VX; | |
1424 | if (tdesc == tdesc_s390x_tevx_linux64) | |
1425 | return S390_TDESC_TEVX; | |
ce29f843 AA |
1426 | if (tdesc == tdesc_s390x_gs_linux64) |
1427 | return S390_TDESC_GS; | |
abd9baf9 MK |
1428 | #endif |
1429 | ||
1430 | if (tdesc == tdesc_s390_linux32) | |
1431 | return S390_TDESC_32; | |
1432 | if (tdesc == tdesc_s390_linux32v1) | |
1433 | return S390_TDESC_32V1; | |
1434 | if (tdesc == tdesc_s390_linux32v2) | |
1435 | return S390_TDESC_32V2; | |
1436 | if (tdesc == tdesc_s390_linux64) | |
1437 | return S390_TDESC_64; | |
1438 | if (tdesc == tdesc_s390_linux64v1) | |
1439 | return S390_TDESC_64V1; | |
1440 | if (tdesc == tdesc_s390_linux64v2) | |
1441 | return S390_TDESC_64V2; | |
1442 | if (tdesc == tdesc_s390_te_linux64) | |
1443 | return S390_TDESC_TE; | |
1444 | if (tdesc == tdesc_s390_vx_linux64) | |
1445 | return S390_TDESC_VX; | |
1446 | if (tdesc == tdesc_s390_tevx_linux64) | |
1447 | return S390_TDESC_TEVX; | |
ce29f843 AA |
1448 | if (tdesc == tdesc_s390_gs_linux64) |
1449 | return S390_TDESC_GS; | |
abd9baf9 MK |
1450 | |
1451 | return 0; | |
1452 | } | |
1453 | ||
f39e8743 MK |
1454 | /* Appends given buffer to current_insn_ptr in the target. */ |
1455 | ||
1456 | static void | |
1457 | add_insns (const unsigned char *start, int len) | |
1458 | { | |
1459 | CORE_ADDR buildaddr = current_insn_ptr; | |
1460 | ||
1461 | if (debug_threads) | |
1462 | debug_printf ("Adding %d bytes of insn at %s\n", | |
1463 | len, paddress (buildaddr)); | |
1464 | ||
1465 | append_insns (&buildaddr, len, start); | |
1466 | current_insn_ptr = buildaddr; | |
1467 | } | |
1468 | ||
1469 | /* Register usage in emit: | |
1470 | ||
1471 | - %r0, %r1: temp | |
1472 | - %r2: top of stack (high word for 31-bit) | |
1473 | - %r3: low word of top of stack (for 31-bit) | |
1474 | - %r4, %r5: temp | |
1475 | - %r6, %r7, %r8: don't use | |
1476 | - %r9: saved arg1 | |
1477 | - %r10: saved arg2 | |
1478 | - %r11: frame pointer | |
1479 | - %r12: saved top of stack for void_call_2 (high word for 31-bit) | |
1480 | - %r13: low word of saved top of stack (for 31-bit) | |
1481 | - %r14: return address for calls | |
1482 | - %r15: stack pointer | |
1483 | ||
1484 | */ | |
1485 | ||
1486 | /* The "emit_prologue" emit_ops method for s390. */ | |
1487 | ||
1488 | static void | |
1489 | s390_emit_prologue (void) | |
1490 | { | |
1491 | static const unsigned char buf[] = { | |
1492 | 0x90, 0x9f, 0xf0, 0x24, /* stm %r9, %r15, 0x24(%r15) */ | |
1493 | 0x18, 0x92, /* lr %r9, %r2 */ | |
1494 | 0x18, 0xa3, /* lr %r10, %r3 */ | |
1495 | 0x18, 0xbf, /* lr %r11, %r15 */ | |
1496 | }; | |
1497 | add_insns (buf, sizeof buf); | |
1498 | } | |
1499 | ||
1500 | /* The "emit_epilogue" emit_ops method for s390. */ | |
1501 | ||
1502 | static void | |
1503 | s390_emit_epilogue (void) | |
1504 | { | |
1505 | static const unsigned char buf[] = { | |
1506 | 0x90, 0x23, 0xa0, 0x00, /* stm %r2, %r3, 0(%r10) */ | |
1507 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1508 | 0x98, 0x9f, 0xb0, 0x24, /* lm %r9, %r15, 0x24(%r11) */ | |
1509 | 0x07, 0xfe, /* br %r14 */ | |
1510 | }; | |
1511 | add_insns (buf, sizeof buf); | |
1512 | } | |
1513 | ||
1514 | /* The "emit_add" emit_ops method for s390. */ | |
1515 | ||
1516 | static void | |
1517 | s390_emit_add (void) | |
1518 | { | |
1519 | static const unsigned char buf[] = { | |
1520 | 0x5e, 0x30, 0xf0, 0x04, /* al %r3, 4(%r15) */ | |
1521 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x98, /* al %r2, 0(%r15) */ | |
1522 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1523 | }; | |
1524 | add_insns (buf, sizeof buf); | |
1525 | } | |
1526 | ||
1527 | /* The "emit_sub" emit_ops method for s390. */ | |
1528 | ||
1529 | static void | |
1530 | s390_emit_sub (void) | |
1531 | { | |
1532 | static const unsigned char buf[] = { | |
1533 | 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */ | |
1534 | 0x1f, 0x53, /* slr %r5, %r3 */ | |
1535 | 0xb9, 0x99, 0x00, 0x42, /* slbr %r4, %r2 */ | |
1536 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1537 | 0x18, 0x35, /* lr %r3, %r5 */ | |
1538 | 0x18, 0x24, /* lr %r2, %r4 */ | |
1539 | }; | |
1540 | add_insns (buf, sizeof buf); | |
1541 | } | |
1542 | ||
1543 | /* The "emit_mul" emit_ops method for s390. */ | |
1544 | ||
1545 | static void | |
1546 | s390_emit_mul (void) | |
1547 | { | |
1548 | emit_error = 1; | |
1549 | } | |
1550 | ||
1551 | /* The "emit_lsh" emit_ops method for s390. */ | |
1552 | ||
1553 | static void | |
1554 | s390_emit_lsh (void) | |
1555 | { | |
1556 | static const unsigned char buf[] = { | |
1557 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1558 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1559 | 0x8d, 0x20, 0x40, 0x00, /* sldl %r2, 0(%r4) */ | |
1560 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1561 | }; | |
1562 | add_insns (buf, sizeof buf); | |
1563 | } | |
1564 | ||
1565 | /* The "emit_rsh_signed" emit_ops method for s390. */ | |
1566 | ||
1567 | static void | |
1568 | s390_emit_rsh_signed (void) | |
1569 | { | |
1570 | static const unsigned char buf[] = { | |
1571 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1572 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1573 | 0x8e, 0x20, 0x40, 0x00, /* srda %r2, 0(%r4) */ | |
1574 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1575 | }; | |
1576 | add_insns (buf, sizeof buf); | |
1577 | } | |
1578 | ||
1579 | /* The "emit_rsh_unsigned" emit_ops method for s390. */ | |
1580 | ||
1581 | static void | |
1582 | s390_emit_rsh_unsigned (void) | |
1583 | { | |
1584 | static const unsigned char buf[] = { | |
1585 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1586 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1587 | 0x8c, 0x20, 0x40, 0x00, /* srdl %r2, 0(%r4) */ | |
1588 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1589 | }; | |
1590 | add_insns (buf, sizeof buf); | |
1591 | } | |
1592 | ||
1593 | /* The "emit_ext" emit_ops method for s390. */ | |
1594 | ||
1595 | static void | |
1596 | s390_emit_ext (int arg) | |
1597 | { | |
1598 | unsigned char buf[] = { | |
b4f183d2 TT |
1599 | 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */ |
1600 | 0x8e, 0x20, 0x00, (unsigned char) (64 - arg), /* srda %r2, <64-arg> */ | |
f39e8743 MK |
1601 | }; |
1602 | add_insns (buf, sizeof buf); | |
1603 | } | |
1604 | ||
1605 | /* The "emit_log_not" emit_ops method for s390. */ | |
1606 | ||
1607 | static void | |
1608 | s390_emit_log_not (void) | |
1609 | { | |
1610 | static const unsigned char buf[] = { | |
1611 | 0x16, 0x23, /* or %r2, %r3 */ | |
1612 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1613 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1614 | 0xa7, 0x74, 0x00, 0x04, /* jne .Lskip */ | |
1615 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1616 | /* .Lskip: */ | |
1617 | }; | |
1618 | add_insns (buf, sizeof buf); | |
1619 | } | |
1620 | ||
1621 | /* The "emit_bit_and" emit_ops method for s390. */ | |
1622 | ||
1623 | static void | |
1624 | s390_emit_bit_and (void) | |
1625 | { | |
1626 | static const unsigned char buf[] = { | |
1627 | 0x54, 0x20, 0xf0, 0x00, /* n %r2, 0(%r15) */ | |
1628 | 0x54, 0x30, 0xf0, 0x04, /* n %r3, 4(%r15) */ | |
1629 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1630 | }; | |
1631 | add_insns (buf, sizeof buf); | |
1632 | } | |
1633 | ||
1634 | /* The "emit_bit_or" emit_ops method for s390. */ | |
1635 | ||
1636 | static void | |
1637 | s390_emit_bit_or (void) | |
1638 | { | |
1639 | static const unsigned char buf[] = { | |
1640 | 0x56, 0x20, 0xf0, 0x00, /* o %r2, 0(%r15) */ | |
1641 | 0x56, 0x30, 0xf0, 0x04, /* o %r3, 4(%r15) */ | |
1642 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1643 | }; | |
1644 | add_insns (buf, sizeof buf); | |
1645 | } | |
1646 | ||
1647 | /* The "emit_bit_xor" emit_ops method for s390. */ | |
1648 | ||
1649 | static void | |
1650 | s390_emit_bit_xor (void) | |
1651 | { | |
1652 | static const unsigned char buf[] = { | |
1653 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
1654 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
1655 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1656 | }; | |
1657 | add_insns (buf, sizeof buf); | |
1658 | } | |
1659 | ||
1660 | /* The "emit_bit_not" emit_ops method for s390. */ | |
1661 | ||
1662 | static void | |
1663 | s390_emit_bit_not (void) | |
1664 | { | |
1665 | static const unsigned char buf[] = { | |
1666 | 0xa7, 0x48, 0xff, 0xff, /* lhi %r4, -1 */ | |
1667 | 0x17, 0x24, /* xr %r2, %r4 */ | |
1668 | 0x17, 0x34, /* xr %r3, %r4 */ | |
1669 | }; | |
1670 | add_insns (buf, sizeof buf); | |
1671 | } | |
1672 | ||
1673 | /* The "emit_equal" emit_ops method for s390. */ | |
1674 | ||
1675 | static void | |
1676 | s390_emit_equal (void) | |
1677 | { | |
1678 | s390_emit_bit_xor (); | |
1679 | s390_emit_log_not (); | |
1680 | } | |
1681 | ||
1682 | /* The "emit_less_signed" emit_ops method for s390. */ | |
1683 | ||
1684 | static void | |
1685 | s390_emit_less_signed (void) | |
1686 | { | |
1687 | static const unsigned char buf[] = { | |
1688 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
1689 | 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */ | |
1690 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */ | |
1691 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
1692 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */ | |
1693 | /* .Lhigh: */ | |
1694 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1695 | 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */ | |
1696 | /* .Lless: */ | |
1697 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1698 | /* .Lend: */ | |
1699 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1700 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1701 | }; | |
1702 | add_insns (buf, sizeof buf); | |
1703 | } | |
1704 | ||
1705 | /* The "emit_less_unsigned" emit_ops method for s390. */ | |
1706 | ||
1707 | static void | |
1708 | s390_emit_less_unsigned (void) | |
1709 | { | |
1710 | static const unsigned char buf[] = { | |
1711 | 0x55, 0x20, 0xf0, 0x00, /* cl %r2, 0(%r15) */ | |
1712 | 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */ | |
1713 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */ | |
1714 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
1715 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */ | |
1716 | /* .Lhigh: */ | |
1717 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1718 | 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */ | |
1719 | /* .Lless: */ | |
1720 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1721 | /* .Lend: */ | |
1722 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1723 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1724 | }; | |
1725 | add_insns (buf, sizeof buf); | |
1726 | } | |
1727 | ||
1728 | /* The "emit_ref" emit_ops method for s390. */ | |
1729 | ||
1730 | static void | |
1731 | s390_emit_ref (int size) | |
1732 | { | |
1733 | static const unsigned char buf1[] = { | |
1734 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1735 | 0x43, 0x30, 0x30, 0x00, /* ic %r3, 0(%r3) */ | |
1736 | }; | |
1737 | static const unsigned char buf2[] = { | |
1738 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1739 | 0x48, 0x30, 0x30, 0x00, /* lh %r3, 0(%r3) */ | |
1740 | }; | |
1741 | static const unsigned char buf4[] = { | |
1742 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1743 | 0x58, 0x30, 0x30, 0x00, /* l %r3, 0(%r3) */ | |
1744 | }; | |
1745 | static const unsigned char buf8[] = { | |
1746 | 0x98, 0x23, 0x30, 0x00, /* lm %r2, %r3, 0(%r3) */ | |
1747 | }; | |
1748 | switch (size) | |
1749 | { | |
1750 | case 1: | |
1751 | add_insns (buf1, sizeof buf1); | |
1752 | break; | |
1753 | case 2: | |
1754 | add_insns (buf2, sizeof buf2); | |
1755 | break; | |
1756 | case 4: | |
1757 | add_insns (buf4, sizeof buf4); | |
1758 | break; | |
1759 | case 8: | |
1760 | add_insns (buf8, sizeof buf8); | |
1761 | break; | |
1762 | default: | |
1763 | emit_error = 1; | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | /* The "emit_if_goto" emit_ops method for s390. */ | |
1768 | ||
1769 | static void | |
1770 | s390_emit_if_goto (int *offset_p, int *size_p) | |
1771 | { | |
1772 | static const unsigned char buf[] = { | |
1773 | 0x16, 0x23, /* or %r2, %r3 */ | |
1774 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1775 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1776 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00 /* jgne <fillme> */ | |
1777 | }; | |
1778 | add_insns (buf, sizeof buf); | |
1779 | if (offset_p) | |
1780 | *offset_p = 12; | |
1781 | if (size_p) | |
1782 | *size_p = 4; | |
1783 | } | |
1784 | ||
1785 | /* The "emit_goto" emit_ops method for s390 and s390x. */ | |
1786 | ||
1787 | static void | |
1788 | s390_emit_goto (int *offset_p, int *size_p) | |
1789 | { | |
1790 | static const unsigned char buf[] = { | |
1791 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
1792 | }; | |
1793 | add_insns (buf, sizeof buf); | |
1794 | if (offset_p) | |
1795 | *offset_p = 2; | |
1796 | if (size_p) | |
1797 | *size_p = 4; | |
1798 | } | |
1799 | ||
1800 | /* The "write_goto_address" emit_ops method for s390 and s390x. */ | |
1801 | ||
1802 | static void | |
1803 | s390_write_goto_address (CORE_ADDR from, CORE_ADDR to, int size) | |
1804 | { | |
1805 | long diff = ((long) (to - (from - 2))) / 2; | |
1806 | int sdiff = diff; | |
1807 | unsigned char buf[sizeof sdiff]; | |
1808 | ||
1809 | /* We're only doing 4-byte sizes at the moment. */ | |
1810 | if (size != sizeof sdiff || sdiff != diff) | |
1811 | { | |
1812 | emit_error = 1; | |
1813 | return; | |
1814 | } | |
1815 | ||
1816 | memcpy (buf, &sdiff, sizeof sdiff); | |
4196ab2a | 1817 | target_write_memory (from, buf, sizeof sdiff); |
f39e8743 MK |
1818 | } |
1819 | ||
1820 | /* Preparation for emitting a literal pool of given size. Loads the address | |
1821 | of the pool into %r1, and jumps over it. Called should emit the pool data | |
1822 | immediately afterwards. Used for both s390 and s390x. */ | |
1823 | ||
1824 | static void | |
1825 | s390_emit_litpool (int size) | |
1826 | { | |
1827 | static const unsigned char nop[] = { | |
1828 | 0x07, 0x07, | |
1829 | }; | |
1830 | unsigned char buf[] = { | |
b4f183d2 TT |
1831 | 0xa7, 0x15, 0x00, |
1832 | (unsigned char) ((size + 4) / 2), /* bras %r1, .Lend+size */ | |
f39e8743 MK |
1833 | /* .Lend: */ |
1834 | }; | |
1835 | if (size == 4) | |
1836 | { | |
1837 | /* buf needs to start at even halfword for litpool to be aligned */ | |
1838 | if (current_insn_ptr & 2) | |
1839 | add_insns (nop, sizeof nop); | |
1840 | } | |
1841 | else | |
1842 | { | |
1843 | while ((current_insn_ptr & 6) != 4) | |
1844 | add_insns (nop, sizeof nop); | |
1845 | } | |
1846 | add_insns (buf, sizeof buf); | |
1847 | } | |
1848 | ||
1849 | /* The "emit_const" emit_ops method for s390. */ | |
1850 | ||
1851 | static void | |
1852 | s390_emit_const (LONGEST num) | |
1853 | { | |
1854 | unsigned long long n = num; | |
1855 | unsigned char buf_s[] = { | |
b4f183d2 TT |
1856 | /* lhi %r3, <num> */ |
1857 | 0xa7, 0x38, | |
1858 | (unsigned char) (num >> 8), (unsigned char) num, | |
1859 | /* xr %r2, %r2 */ | |
1860 | 0x17, 0x22, | |
f39e8743 MK |
1861 | }; |
1862 | static const unsigned char buf_l[] = { | |
1863 | 0x98, 0x23, 0x10, 0x00, /* lm %r2, %r3, 0(%r1) */ | |
1864 | }; | |
1865 | if (num < 0x8000 && num >= 0) | |
1866 | { | |
1867 | add_insns (buf_s, sizeof buf_s); | |
1868 | } | |
1869 | else | |
1870 | { | |
1871 | s390_emit_litpool (8); | |
1872 | add_insns ((unsigned char *) &n, sizeof n); | |
1873 | add_insns (buf_l, sizeof buf_l); | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | /* The "emit_call" emit_ops method for s390. */ | |
1878 | ||
1879 | static void | |
1880 | s390_emit_call (CORE_ADDR fn) | |
1881 | { | |
1882 | unsigned int n = fn; | |
1883 | static const unsigned char buf[] = { | |
1884 | 0x58, 0x10, 0x10, 0x00, /* l %r1, 0(%r1) */ | |
1885 | 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */ | |
1886 | 0x0d, 0xe1, /* basr %r14, %r1 */ | |
1887 | 0xa7, 0xfa, 0x00, 0x60, /* ahi %r15, 0x60 */ | |
1888 | }; | |
1889 | s390_emit_litpool (4); | |
1890 | add_insns ((unsigned char *) &n, sizeof n); | |
1891 | add_insns (buf, sizeof buf); | |
1892 | } | |
1893 | ||
1894 | /* The "emit_reg" emit_ops method for s390. */ | |
1895 | ||
1896 | static void | |
1897 | s390_emit_reg (int reg) | |
1898 | { | |
1899 | unsigned char bufpre[] = { | |
b4f183d2 TT |
1900 | /* lr %r2, %r9 */ |
1901 | 0x18, 0x29, | |
1902 | /* lhi %r3, <reg> */ | |
1903 | 0xa7, 0x38, (unsigned char) (reg >> 8), (unsigned char) reg, | |
f39e8743 MK |
1904 | }; |
1905 | add_insns (bufpre, sizeof bufpre); | |
1906 | s390_emit_call (get_raw_reg_func_addr ()); | |
1907 | } | |
1908 | ||
1909 | /* The "emit_pop" emit_ops method for s390. */ | |
1910 | ||
1911 | static void | |
1912 | s390_emit_pop (void) | |
1913 | { | |
1914 | static const unsigned char buf[] = { | |
1915 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1916 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1917 | }; | |
1918 | add_insns (buf, sizeof buf); | |
1919 | } | |
1920 | ||
1921 | /* The "emit_stack_flush" emit_ops method for s390. */ | |
1922 | ||
1923 | static void | |
1924 | s390_emit_stack_flush (void) | |
1925 | { | |
1926 | static const unsigned char buf[] = { | |
1927 | 0xa7, 0xfa, 0xff, 0xf8, /* ahi %r15, -8 */ | |
1928 | 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */ | |
1929 | }; | |
1930 | add_insns (buf, sizeof buf); | |
1931 | } | |
1932 | ||
1933 | /* The "emit_zero_ext" emit_ops method for s390. */ | |
1934 | ||
1935 | static void | |
1936 | s390_emit_zero_ext (int arg) | |
1937 | { | |
1938 | unsigned char buf[] = { | |
b4f183d2 TT |
1939 | 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */ |
1940 | 0x8c, 0x20, 0x00, (unsigned char) (64 - arg), /* srdl %r2, <64-arg> */ | |
f39e8743 MK |
1941 | }; |
1942 | add_insns (buf, sizeof buf); | |
1943 | } | |
1944 | ||
1945 | /* The "emit_swap" emit_ops method for s390. */ | |
1946 | ||
1947 | static void | |
1948 | s390_emit_swap (void) | |
1949 | { | |
1950 | static const unsigned char buf[] = { | |
1951 | 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */ | |
1952 | 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */ | |
1953 | 0x18, 0x24, /* lr %r2, %r4 */ | |
1954 | 0x18, 0x35, /* lr %r3, %r5 */ | |
1955 | }; | |
1956 | add_insns (buf, sizeof buf); | |
1957 | } | |
1958 | ||
1959 | /* The "emit_stack_adjust" emit_ops method for s390. */ | |
1960 | ||
1961 | static void | |
1962 | s390_emit_stack_adjust (int n) | |
1963 | { | |
1964 | unsigned char buf[] = { | |
b4f183d2 TT |
1965 | /* ahi %r15, 8*n */ |
1966 | 0xa7, 0xfa, | |
1967 | (unsigned char ) (n * 8 >> 8), (unsigned char) (n * 8), | |
f39e8743 MK |
1968 | }; |
1969 | add_insns (buf, sizeof buf); | |
1970 | } | |
1971 | ||
1972 | /* Sets %r2 to a 32-bit constant. */ | |
1973 | ||
1974 | static void | |
1975 | s390_emit_set_r2 (int arg1) | |
1976 | { | |
1977 | unsigned char buf_s[] = { | |
b4f183d2 TT |
1978 | /* lhi %r2, <arg1> */ |
1979 | 0xa7, 0x28, (unsigned char) (arg1 >> 8), (unsigned char) arg1, | |
f39e8743 MK |
1980 | }; |
1981 | static const unsigned char buf_l[] = { | |
1982 | 0x58, 0x20, 0x10, 0x00, /* l %r2, 0(%r1) */ | |
1983 | }; | |
1984 | if (arg1 < 0x8000 && arg1 >= -0x8000) | |
1985 | { | |
1986 | add_insns (buf_s, sizeof buf_s); | |
1987 | } | |
1988 | else | |
1989 | { | |
1990 | s390_emit_litpool (4); | |
1991 | add_insns ((unsigned char *) &arg1, sizeof arg1); | |
1992 | add_insns (buf_l, sizeof buf_l); | |
1993 | } | |
1994 | } | |
1995 | ||
1996 | /* The "emit_int_call_1" emit_ops method for s390. */ | |
1997 | ||
1998 | static void | |
1999 | s390_emit_int_call_1 (CORE_ADDR fn, int arg1) | |
2000 | { | |
2001 | /* FN's prototype is `LONGEST(*fn)(int)'. */ | |
2002 | s390_emit_set_r2 (arg1); | |
2003 | s390_emit_call (fn); | |
2004 | } | |
2005 | ||
2006 | /* The "emit_void_call_2" emit_ops method for s390. */ | |
2007 | ||
2008 | static void | |
2009 | s390_emit_void_call_2 (CORE_ADDR fn, int arg1) | |
2010 | { | |
2011 | /* FN's prototype is `void(*fn)(int,LONGEST)'. */ | |
2012 | static const unsigned char buf[] = { | |
2013 | 0x18, 0xc2, /* lr %r12, %r2 */ | |
2014 | 0x18, 0xd3, /* lr %r13, %r3 */ | |
2015 | 0x18, 0x43, /* lr %r4, %r3 */ | |
2016 | 0x18, 0x32, /* lr %r3, %r2 */ | |
2017 | }; | |
2018 | static const unsigned char buf2[] = { | |
2019 | 0x18, 0x2c, /* lr %r2, %r12 */ | |
2020 | 0x18, 0x3d, /* lr %r3, %r13 */ | |
2021 | }; | |
2022 | add_insns (buf, sizeof buf); | |
2023 | s390_emit_set_r2 (arg1); | |
2024 | s390_emit_call (fn); | |
2025 | add_insns (buf2, sizeof buf2); | |
2026 | } | |
2027 | ||
2028 | /* The "emit_eq_goto" emit_ops method for s390. */ | |
2029 | ||
782c1122 | 2030 | static void |
f39e8743 MK |
2031 | s390_emit_eq_goto (int *offset_p, int *size_p) |
2032 | { | |
2033 | static const unsigned char buf[] = { | |
2034 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
2035 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
2036 | 0x16, 0x23, /* or %r2, %r3 */ | |
2037 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2038 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2039 | 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */ | |
2040 | }; | |
2041 | add_insns (buf, sizeof buf); | |
2042 | if (offset_p) | |
2043 | *offset_p = 20; | |
2044 | if (size_p) | |
2045 | *size_p = 4; | |
2046 | } | |
2047 | ||
2048 | /* The "emit_ne_goto" emit_ops method for s390. */ | |
2049 | ||
782c1122 | 2050 | static void |
f39e8743 MK |
2051 | s390_emit_ne_goto (int *offset_p, int *size_p) |
2052 | { | |
2053 | static const unsigned char buf[] = { | |
2054 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
2055 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
2056 | 0x16, 0x23, /* or %r2, %r3 */ | |
2057 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2058 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2059 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2060 | }; | |
2061 | add_insns (buf, sizeof buf); | |
2062 | if (offset_p) | |
2063 | *offset_p = 20; | |
2064 | if (size_p) | |
2065 | *size_p = 4; | |
2066 | } | |
2067 | ||
2068 | /* The "emit_lt_goto" emit_ops method for s390. */ | |
2069 | ||
782c1122 | 2070 | static void |
f39e8743 MK |
2071 | s390_emit_lt_goto (int *offset_p, int *size_p) |
2072 | { | |
2073 | static const unsigned char buf[] = { | |
2074 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2075 | 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */ | |
2076 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */ | |
2077 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2078 | 0xa7, 0x24, 0x00, 0x08, /* jh .Ltrue */ | |
2079 | /* .Lfalse: */ | |
2080 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2081 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2082 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2083 | /* .Ltrue: */ | |
2084 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2085 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2086 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2087 | /* .Lend: */ | |
2088 | }; | |
2089 | add_insns (buf, sizeof buf); | |
2090 | if (offset_p) | |
2091 | *offset_p = 42; | |
2092 | if (size_p) | |
2093 | *size_p = 4; | |
2094 | } | |
2095 | ||
2096 | /* The "emit_le_goto" emit_ops method for s390. */ | |
2097 | ||
782c1122 | 2098 | static void |
f39e8743 MK |
2099 | s390_emit_le_goto (int *offset_p, int *size_p) |
2100 | { | |
2101 | static const unsigned char buf[] = { | |
2102 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2103 | 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */ | |
2104 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */ | |
2105 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2106 | 0xa7, 0xa4, 0x00, 0x08, /* jhe .Ltrue */ | |
2107 | /* .Lfalse: */ | |
2108 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2109 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2110 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2111 | /* .Ltrue: */ | |
2112 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2113 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2114 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2115 | /* .Lend: */ | |
2116 | }; | |
2117 | add_insns (buf, sizeof buf); | |
2118 | if (offset_p) | |
2119 | *offset_p = 42; | |
2120 | if (size_p) | |
2121 | *size_p = 4; | |
2122 | } | |
2123 | ||
2124 | /* The "emit_gt_goto" emit_ops method for s390. */ | |
2125 | ||
782c1122 | 2126 | static void |
f39e8743 MK |
2127 | s390_emit_gt_goto (int *offset_p, int *size_p) |
2128 | { | |
2129 | static const unsigned char buf[] = { | |
2130 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2131 | 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */ | |
2132 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */ | |
2133 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2134 | 0xa7, 0x44, 0x00, 0x08, /* jl .Ltrue */ | |
2135 | /* .Lfalse: */ | |
2136 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2137 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2138 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2139 | /* .Ltrue: */ | |
2140 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2141 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2142 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2143 | /* .Lend: */ | |
2144 | }; | |
2145 | add_insns (buf, sizeof buf); | |
2146 | if (offset_p) | |
2147 | *offset_p = 42; | |
2148 | if (size_p) | |
2149 | *size_p = 4; | |
2150 | } | |
2151 | ||
2152 | /* The "emit_ge_goto" emit_ops method for s390. */ | |
2153 | ||
782c1122 | 2154 | static void |
f39e8743 MK |
2155 | s390_emit_ge_goto (int *offset_p, int *size_p) |
2156 | { | |
2157 | static const unsigned char buf[] = { | |
2158 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2159 | 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */ | |
2160 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */ | |
2161 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2162 | 0xa7, 0xc4, 0x00, 0x08, /* jle .Ltrue */ | |
2163 | /* .Lfalse: */ | |
2164 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2165 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2166 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2167 | /* .Ltrue: */ | |
2168 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2169 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2170 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2171 | /* .Lend: */ | |
2172 | }; | |
2173 | add_insns (buf, sizeof buf); | |
2174 | if (offset_p) | |
2175 | *offset_p = 42; | |
2176 | if (size_p) | |
2177 | *size_p = 4; | |
2178 | } | |
2179 | ||
2180 | /* The "emit_ops" structure for s390. Named _impl to avoid name | |
2181 | collision with s390_emit_ops function. */ | |
2182 | ||
782c1122 | 2183 | static struct emit_ops s390_emit_ops_impl = |
f39e8743 MK |
2184 | { |
2185 | s390_emit_prologue, | |
2186 | s390_emit_epilogue, | |
2187 | s390_emit_add, | |
2188 | s390_emit_sub, | |
2189 | s390_emit_mul, | |
2190 | s390_emit_lsh, | |
2191 | s390_emit_rsh_signed, | |
2192 | s390_emit_rsh_unsigned, | |
2193 | s390_emit_ext, | |
2194 | s390_emit_log_not, | |
2195 | s390_emit_bit_and, | |
2196 | s390_emit_bit_or, | |
2197 | s390_emit_bit_xor, | |
2198 | s390_emit_bit_not, | |
2199 | s390_emit_equal, | |
2200 | s390_emit_less_signed, | |
2201 | s390_emit_less_unsigned, | |
2202 | s390_emit_ref, | |
2203 | s390_emit_if_goto, | |
2204 | s390_emit_goto, | |
2205 | s390_write_goto_address, | |
2206 | s390_emit_const, | |
2207 | s390_emit_call, | |
2208 | s390_emit_reg, | |
2209 | s390_emit_pop, | |
2210 | s390_emit_stack_flush, | |
2211 | s390_emit_zero_ext, | |
2212 | s390_emit_swap, | |
2213 | s390_emit_stack_adjust, | |
2214 | s390_emit_int_call_1, | |
2215 | s390_emit_void_call_2, | |
2216 | s390_emit_eq_goto, | |
2217 | s390_emit_ne_goto, | |
2218 | s390_emit_lt_goto, | |
2219 | s390_emit_le_goto, | |
2220 | s390_emit_gt_goto, | |
2221 | s390_emit_ge_goto | |
2222 | }; | |
2223 | ||
2224 | #ifdef __s390x__ | |
2225 | ||
2226 | /* The "emit_prologue" emit_ops method for s390x. */ | |
2227 | ||
2228 | static void | |
2229 | s390x_emit_prologue (void) | |
2230 | { | |
2231 | static const unsigned char buf[] = { | |
2232 | 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x24, /* stmg %r9, %r15, 0x48(%r15) */ | |
2233 | 0xb9, 0x04, 0x00, 0x92, /* lgr %r9, %r2 */ | |
2234 | 0xb9, 0x04, 0x00, 0xa3, /* lgr %r10, %r3 */ | |
2235 | 0xb9, 0x04, 0x00, 0xbf, /* lgr %r11, %r15 */ | |
2236 | }; | |
2237 | add_insns (buf, sizeof buf); | |
2238 | } | |
2239 | ||
2240 | /* The "emit_epilogue" emit_ops method for s390x. */ | |
2241 | ||
2242 | static void | |
2243 | s390x_emit_epilogue (void) | |
2244 | { | |
2245 | static const unsigned char buf[] = { | |
2246 | 0xe3, 0x20, 0xa0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r10) */ | |
2247 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2248 | 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x04, /* lmg %r9, %r15, 0x48(%r15) */ | |
2249 | 0x07, 0xfe, /* br %r14 */ | |
2250 | }; | |
2251 | add_insns (buf, sizeof buf); | |
2252 | } | |
2253 | ||
2254 | /* The "emit_add" emit_ops method for s390x. */ | |
2255 | ||
2256 | static void | |
2257 | s390x_emit_add (void) | |
2258 | { | |
2259 | static const unsigned char buf[] = { | |
2260 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x0a, /* alg %r2, 0(%r15) */ | |
2261 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2262 | }; | |
2263 | add_insns (buf, sizeof buf); | |
2264 | } | |
2265 | ||
2266 | /* The "emit_sub" emit_ops method for s390x. */ | |
2267 | ||
2268 | static void | |
2269 | s390x_emit_sub (void) | |
2270 | { | |
2271 | static const unsigned char buf[] = { | |
2272 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2273 | 0xb9, 0x0b, 0x00, 0x32, /* slgr %r3, %r2 */ | |
2274 | 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */ | |
2275 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2276 | }; | |
2277 | add_insns (buf, sizeof buf); | |
2278 | } | |
2279 | ||
2280 | /* The "emit_mul" emit_ops method for s390x. */ | |
2281 | ||
2282 | static void | |
2283 | s390x_emit_mul (void) | |
2284 | { | |
2285 | emit_error = 1; | |
2286 | } | |
2287 | ||
2288 | /* The "emit_lsh" emit_ops method for s390x. */ | |
2289 | ||
2290 | static void | |
2291 | s390x_emit_lsh (void) | |
2292 | { | |
2293 | static const unsigned char buf[] = { | |
2294 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2295 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0d, /* sllg %r2, %r3, 0(%r2) */ | |
2296 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2297 | }; | |
2298 | add_insns (buf, sizeof buf); | |
2299 | } | |
2300 | ||
2301 | /* The "emit_rsh_signed" emit_ops method for s390x. */ | |
2302 | ||
2303 | static void | |
2304 | s390x_emit_rsh_signed (void) | |
2305 | { | |
2306 | static const unsigned char buf[] = { | |
2307 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2308 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0a, /* srag %r2, %r3, 0(%r2) */ | |
2309 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2310 | }; | |
2311 | add_insns (buf, sizeof buf); | |
2312 | } | |
2313 | ||
2314 | /* The "emit_rsh_unsigned" emit_ops method for s390x. */ | |
2315 | ||
2316 | static void | |
2317 | s390x_emit_rsh_unsigned (void) | |
2318 | { | |
2319 | static const unsigned char buf[] = { | |
2320 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2321 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0c, /* srlg %r2, %r3, 0(%r2) */ | |
2322 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2323 | }; | |
2324 | add_insns (buf, sizeof buf); | |
2325 | } | |
2326 | ||
2327 | /* The "emit_ext" emit_ops method for s390x. */ | |
2328 | ||
2329 | static void | |
2330 | s390x_emit_ext (int arg) | |
2331 | { | |
2332 | unsigned char buf[] = { | |
b4f183d2 TT |
2333 | /* sllg %r2, %r2, <64-arg> */ |
2334 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d, | |
2335 | /* srag %r2, %r2, <64-arg> */ | |
2336 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0a, | |
f39e8743 MK |
2337 | }; |
2338 | add_insns (buf, sizeof buf); | |
2339 | } | |
2340 | ||
2341 | /* The "emit_log_not" emit_ops method for s390x. */ | |
2342 | ||
2343 | static void | |
2344 | s390x_emit_log_not (void) | |
2345 | { | |
2346 | static const unsigned char buf[] = { | |
2347 | 0xb9, 0x00, 0x00, 0x22, /* lpgr %r2, %r2 */ | |
2348 | 0xa7, 0x2b, 0xff, 0xff, /* aghi %r2, -1 */ | |
2349 | 0xeb, 0x22, 0x00, 0x3f, 0x00, 0x0c, /* srlg %r2, %r2, 63 */ | |
2350 | }; | |
2351 | add_insns (buf, sizeof buf); | |
2352 | } | |
2353 | ||
2354 | /* The "emit_bit_and" emit_ops method for s390x. */ | |
2355 | ||
2356 | static void | |
2357 | s390x_emit_bit_and (void) | |
2358 | { | |
2359 | static const unsigned char buf[] = { | |
2360 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x80, /* ng %r2, 0(%r15) */ | |
2361 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2362 | }; | |
2363 | add_insns (buf, sizeof buf); | |
2364 | } | |
2365 | ||
2366 | /* The "emit_bit_or" emit_ops method for s390x. */ | |
2367 | ||
2368 | static void | |
2369 | s390x_emit_bit_or (void) | |
2370 | { | |
2371 | static const unsigned char buf[] = { | |
2372 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x81, /* og %r2, 0(%r15) */ | |
2373 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2374 | }; | |
2375 | add_insns (buf, sizeof buf); | |
2376 | } | |
2377 | ||
2378 | /* The "emit_bit_xor" emit_ops method for s390x. */ | |
2379 | ||
2380 | static void | |
2381 | s390x_emit_bit_xor (void) | |
2382 | { | |
2383 | static const unsigned char buf[] = { | |
2384 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x82, /* xg %r2, 0(%r15) */ | |
2385 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2386 | }; | |
2387 | add_insns (buf, sizeof buf); | |
2388 | } | |
2389 | ||
2390 | /* The "emit_bit_not" emit_ops method for s390x. */ | |
2391 | ||
2392 | static void | |
2393 | s390x_emit_bit_not (void) | |
2394 | { | |
2395 | static const unsigned char buf[] = { | |
2396 | 0xa7, 0x39, 0xff, 0xff, /* lghi %r3, -1 */ | |
2397 | 0xb9, 0x82, 0x00, 0x23, /* xgr %r2, %r3 */ | |
2398 | }; | |
2399 | add_insns (buf, sizeof buf); | |
2400 | } | |
2401 | ||
2402 | /* The "emit_equal" emit_ops method for s390x. */ | |
2403 | ||
2404 | static void | |
2405 | s390x_emit_equal (void) | |
2406 | { | |
2407 | s390x_emit_bit_xor (); | |
2408 | s390x_emit_log_not (); | |
2409 | } | |
2410 | ||
2411 | /* The "emit_less_signed" emit_ops method for s390x. */ | |
2412 | ||
2413 | static void | |
2414 | s390x_emit_less_signed (void) | |
2415 | { | |
2416 | static const unsigned char buf[] = { | |
2417 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2418 | 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */ | |
2419 | 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */ | |
2420 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2421 | /* .Lend: */ | |
2422 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2423 | }; | |
2424 | add_insns (buf, sizeof buf); | |
2425 | } | |
2426 | ||
2427 | /* The "emit_less_unsigned" emit_ops method for s390x. */ | |
2428 | ||
2429 | static void | |
2430 | s390x_emit_less_unsigned (void) | |
2431 | { | |
2432 | static const unsigned char buf[] = { | |
2433 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x21, /* clg %r2, 0(%r15) */ | |
2434 | 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */ | |
2435 | 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */ | |
2436 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2437 | /* .Lend: */ | |
2438 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2439 | }; | |
2440 | add_insns (buf, sizeof buf); | |
2441 | } | |
2442 | ||
2443 | /* The "emit_ref" emit_ops method for s390x. */ | |
2444 | ||
2445 | static void | |
2446 | s390x_emit_ref (int size) | |
2447 | { | |
2448 | static const unsigned char buf1[] = { | |
2449 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x90, /* llgc %r2, 0(%r2) */ | |
2450 | }; | |
2451 | static const unsigned char buf2[] = { | |
2452 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x91 /* llgh %r2, 0(%r2) */ | |
2453 | }; | |
2454 | static const unsigned char buf4[] = { | |
2455 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x16, /* llgf %r2, 0(%r2) */ | |
2456 | }; | |
2457 | static const unsigned char buf8[] = { | |
2458 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x04, /* lg %r2, 0(%r2) */ | |
2459 | }; | |
2460 | switch (size) | |
2461 | { | |
2462 | case 1: | |
2463 | add_insns (buf1, sizeof buf1); | |
2464 | break; | |
2465 | case 2: | |
2466 | add_insns (buf2, sizeof buf2); | |
2467 | break; | |
2468 | case 4: | |
2469 | add_insns (buf4, sizeof buf4); | |
2470 | break; | |
2471 | case 8: | |
2472 | add_insns (buf8, sizeof buf8); | |
2473 | break; | |
2474 | default: | |
2475 | emit_error = 1; | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | /* The "emit_if_goto" emit_ops method for s390x. */ | |
2480 | ||
2481 | static void | |
2482 | s390x_emit_if_goto (int *offset_p, int *size_p) | |
2483 | { | |
2484 | static const unsigned char buf[] = { | |
2485 | 0xb9, 0x02, 0x00, 0x22, /* ltgr %r2, %r2 */ | |
2486 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */ | |
2487 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2488 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2489 | }; | |
2490 | add_insns (buf, sizeof buf); | |
2491 | if (offset_p) | |
2492 | *offset_p = 16; | |
2493 | if (size_p) | |
2494 | *size_p = 4; | |
2495 | } | |
2496 | ||
2497 | /* The "emit_const" emit_ops method for s390x. */ | |
2498 | ||
2499 | static void | |
2500 | s390x_emit_const (LONGEST num) | |
2501 | { | |
2502 | unsigned long long n = num; | |
2503 | unsigned char buf_s[] = { | |
b4f183d2 TT |
2504 | /* lghi %r2, <num> */ |
2505 | 0xa7, 0x29, (unsigned char) (num >> 8), (unsigned char) num, | |
f39e8743 MK |
2506 | }; |
2507 | static const unsigned char buf_l[] = { | |
2508 | 0xe3, 0x20, 0x10, 0x00, 0x00, 0x04, /* lg %r2, 0(%r1) */ | |
2509 | }; | |
2510 | if (num < 0x8000 && num >= -0x8000) | |
2511 | { | |
2512 | add_insns (buf_s, sizeof buf_s); | |
2513 | } | |
2514 | else | |
2515 | { | |
2516 | s390_emit_litpool (8); | |
2517 | add_insns ((unsigned char *) &n, sizeof n); | |
2518 | add_insns (buf_l, sizeof buf_l); | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | /* The "emit_call" emit_ops method for s390x. */ | |
2523 | ||
2524 | static void | |
2525 | s390x_emit_call (CORE_ADDR fn) | |
2526 | { | |
2527 | unsigned long n = fn; | |
2528 | static const unsigned char buf[] = { | |
2529 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1, 0(%r1) */ | |
2530 | 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */ | |
2531 | 0x0d, 0xe1, /* basr %r14, %r1 */ | |
2532 | 0xa7, 0xfb, 0x00, 0xa0, /* aghi %r15, 0xa0 */ | |
2533 | }; | |
2534 | s390_emit_litpool (8); | |
2535 | add_insns ((unsigned char *) &n, sizeof n); | |
2536 | add_insns (buf, sizeof buf); | |
2537 | } | |
2538 | ||
2539 | /* The "emit_reg" emit_ops method for s390x. */ | |
2540 | ||
2541 | static void | |
2542 | s390x_emit_reg (int reg) | |
2543 | { | |
2544 | unsigned char buf[] = { | |
b4f183d2 TT |
2545 | /* lgr %r2, %r9 */ |
2546 | 0xb9, 0x04, 0x00, 0x29, | |
2547 | /* lghi %r3, <reg> */ | |
2548 | 0xa7, 0x39, (unsigned char) (reg >> 8), (unsigned char) reg, | |
f39e8743 MK |
2549 | }; |
2550 | add_insns (buf, sizeof buf); | |
2551 | s390x_emit_call (get_raw_reg_func_addr ()); | |
2552 | } | |
2553 | ||
2554 | /* The "emit_pop" emit_ops method for s390x. */ | |
2555 | ||
2556 | static void | |
2557 | s390x_emit_pop (void) | |
2558 | { | |
2559 | static const unsigned char buf[] = { | |
2560 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */ | |
2561 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2562 | }; | |
2563 | add_insns (buf, sizeof buf); | |
2564 | } | |
2565 | ||
2566 | /* The "emit_stack_flush" emit_ops method for s390x. */ | |
2567 | ||
2568 | static void | |
2569 | s390x_emit_stack_flush (void) | |
2570 | { | |
2571 | static const unsigned char buf[] = { | |
2572 | 0xa7, 0xfb, 0xff, 0xf8, /* aghi %r15, -8 */ | |
2573 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */ | |
2574 | }; | |
2575 | add_insns (buf, sizeof buf); | |
2576 | } | |
2577 | ||
2578 | /* The "emit_zero_ext" emit_ops method for s390x. */ | |
2579 | ||
2580 | static void | |
2581 | s390x_emit_zero_ext (int arg) | |
2582 | { | |
2583 | unsigned char buf[] = { | |
b4f183d2 TT |
2584 | /* sllg %r2, %r2, <64-arg> */ |
2585 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d, | |
2586 | /* srlg %r2, %r2, <64-arg> */ | |
2587 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0c, | |
f39e8743 MK |
2588 | }; |
2589 | add_insns (buf, sizeof buf); | |
2590 | } | |
2591 | ||
2592 | /* The "emit_swap" emit_ops method for s390x. */ | |
2593 | ||
2594 | static void | |
2595 | s390x_emit_swap (void) | |
2596 | { | |
2597 | static const unsigned char buf[] = { | |
2598 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2599 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */ | |
2600 | 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */ | |
2601 | }; | |
2602 | add_insns (buf, sizeof buf); | |
2603 | } | |
2604 | ||
2605 | /* The "emit_stack_adjust" emit_ops method for s390x. */ | |
2606 | ||
2607 | static void | |
2608 | s390x_emit_stack_adjust (int n) | |
2609 | { | |
2610 | unsigned char buf[] = { | |
b4f183d2 TT |
2611 | /* aghi %r15, 8*n */ |
2612 | 0xa7, 0xfb, | |
2613 | (unsigned char) (n * 8 >> 8), (unsigned char) (n * 8), | |
f39e8743 MK |
2614 | }; |
2615 | add_insns (buf, sizeof buf); | |
2616 | } | |
2617 | ||
2618 | /* The "emit_int_call_1" emit_ops method for s390x. */ | |
2619 | ||
2620 | static void | |
2621 | s390x_emit_int_call_1 (CORE_ADDR fn, int arg1) | |
2622 | { | |
2623 | /* FN's prototype is `LONGEST(*fn)(int)'. */ | |
2624 | s390x_emit_const (arg1); | |
2625 | s390x_emit_call (fn); | |
2626 | } | |
2627 | ||
2628 | /* The "emit_void_call_2" emit_ops method for s390x. */ | |
2629 | ||
2630 | static void | |
2631 | s390x_emit_void_call_2 (CORE_ADDR fn, int arg1) | |
2632 | { | |
2633 | /* FN's prototype is `void(*fn)(int,LONGEST)'. */ | |
2634 | static const unsigned char buf[] = { | |
2635 | 0xb9, 0x04, 0x00, 0x32, /* lgr %r3, %r2 */ | |
2636 | 0xb9, 0x04, 0x00, 0xc2, /* lgr %r12, %r2 */ | |
2637 | }; | |
2638 | static const unsigned char buf2[] = { | |
2639 | 0xb9, 0x04, 0x00, 0x2c, /* lgr %r2, %r12 */ | |
2640 | }; | |
2641 | add_insns (buf, sizeof buf); | |
2642 | s390x_emit_const (arg1); | |
2643 | s390x_emit_call (fn); | |
2644 | add_insns (buf2, sizeof buf2); | |
2645 | } | |
2646 | ||
2647 | /* The "emit_eq_goto" emit_ops method for s390x. */ | |
2648 | ||
782c1122 | 2649 | static void |
f39e8743 MK |
2650 | s390x_emit_eq_goto (int *offset_p, int *size_p) |
2651 | { | |
2652 | static const unsigned char buf[] = { | |
2653 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2654 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2655 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2656 | 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */ | |
2657 | }; | |
2658 | add_insns (buf, sizeof buf); | |
2659 | if (offset_p) | |
2660 | *offset_p = 18; | |
2661 | if (size_p) | |
2662 | *size_p = 4; | |
2663 | } | |
2664 | ||
2665 | /* The "emit_ne_goto" emit_ops method for s390x. */ | |
2666 | ||
782c1122 | 2667 | static void |
f39e8743 MK |
2668 | s390x_emit_ne_goto (int *offset_p, int *size_p) |
2669 | { | |
2670 | static const unsigned char buf[] = { | |
2671 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2672 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2673 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2674 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2675 | }; | |
2676 | add_insns (buf, sizeof buf); | |
2677 | if (offset_p) | |
2678 | *offset_p = 18; | |
2679 | if (size_p) | |
2680 | *size_p = 4; | |
2681 | } | |
2682 | ||
2683 | /* The "emit_lt_goto" emit_ops method for s390x. */ | |
2684 | ||
782c1122 | 2685 | static void |
f39e8743 MK |
2686 | s390x_emit_lt_goto (int *offset_p, int *size_p) |
2687 | { | |
2688 | static const unsigned char buf[] = { | |
2689 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2690 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2691 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2692 | 0xc0, 0x24, 0x00, 0x00, 0x00, 0x00, /* jgh <fillme> */ | |
2693 | }; | |
2694 | add_insns (buf, sizeof buf); | |
2695 | if (offset_p) | |
2696 | *offset_p = 18; | |
2697 | if (size_p) | |
2698 | *size_p = 4; | |
2699 | } | |
2700 | ||
2701 | /* The "emit_le_goto" emit_ops method for s390x. */ | |
2702 | ||
782c1122 | 2703 | static void |
f39e8743 MK |
2704 | s390x_emit_le_goto (int *offset_p, int *size_p) |
2705 | { | |
2706 | static const unsigned char buf[] = { | |
2707 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2708 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2709 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2710 | 0xc0, 0xa4, 0x00, 0x00, 0x00, 0x00, /* jghe <fillme> */ | |
2711 | }; | |
2712 | add_insns (buf, sizeof buf); | |
2713 | if (offset_p) | |
2714 | *offset_p = 18; | |
2715 | if (size_p) | |
2716 | *size_p = 4; | |
2717 | } | |
2718 | ||
2719 | /* The "emit_gt_goto" emit_ops method for s390x. */ | |
2720 | ||
782c1122 | 2721 | static void |
f39e8743 MK |
2722 | s390x_emit_gt_goto (int *offset_p, int *size_p) |
2723 | { | |
2724 | static const unsigned char buf[] = { | |
2725 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2726 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2727 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2728 | 0xc0, 0x44, 0x00, 0x00, 0x00, 0x00, /* jgl <fillme> */ | |
2729 | }; | |
2730 | add_insns (buf, sizeof buf); | |
2731 | if (offset_p) | |
2732 | *offset_p = 18; | |
2733 | if (size_p) | |
2734 | *size_p = 4; | |
2735 | } | |
2736 | ||
2737 | /* The "emit_ge_goto" emit_ops method for s390x. */ | |
2738 | ||
782c1122 | 2739 | static void |
f39e8743 MK |
2740 | s390x_emit_ge_goto (int *offset_p, int *size_p) |
2741 | { | |
2742 | static const unsigned char buf[] = { | |
2743 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2744 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2745 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2746 | 0xc0, 0xc4, 0x00, 0x00, 0x00, 0x00, /* jgle <fillme> */ | |
2747 | }; | |
2748 | add_insns (buf, sizeof buf); | |
2749 | if (offset_p) | |
2750 | *offset_p = 18; | |
2751 | if (size_p) | |
2752 | *size_p = 4; | |
2753 | } | |
2754 | ||
2755 | /* The "emit_ops" structure for s390x. */ | |
2756 | ||
782c1122 | 2757 | static struct emit_ops s390x_emit_ops = |
f39e8743 MK |
2758 | { |
2759 | s390x_emit_prologue, | |
2760 | s390x_emit_epilogue, | |
2761 | s390x_emit_add, | |
2762 | s390x_emit_sub, | |
2763 | s390x_emit_mul, | |
2764 | s390x_emit_lsh, | |
2765 | s390x_emit_rsh_signed, | |
2766 | s390x_emit_rsh_unsigned, | |
2767 | s390x_emit_ext, | |
2768 | s390x_emit_log_not, | |
2769 | s390x_emit_bit_and, | |
2770 | s390x_emit_bit_or, | |
2771 | s390x_emit_bit_xor, | |
2772 | s390x_emit_bit_not, | |
2773 | s390x_emit_equal, | |
2774 | s390x_emit_less_signed, | |
2775 | s390x_emit_less_unsigned, | |
2776 | s390x_emit_ref, | |
2777 | s390x_emit_if_goto, | |
2778 | s390_emit_goto, | |
2779 | s390_write_goto_address, | |
2780 | s390x_emit_const, | |
2781 | s390x_emit_call, | |
2782 | s390x_emit_reg, | |
2783 | s390x_emit_pop, | |
2784 | s390x_emit_stack_flush, | |
2785 | s390x_emit_zero_ext, | |
2786 | s390x_emit_swap, | |
2787 | s390x_emit_stack_adjust, | |
2788 | s390x_emit_int_call_1, | |
2789 | s390x_emit_void_call_2, | |
2790 | s390x_emit_eq_goto, | |
2791 | s390x_emit_ne_goto, | |
2792 | s390x_emit_lt_goto, | |
2793 | s390x_emit_le_goto, | |
2794 | s390x_emit_gt_goto, | |
2795 | s390x_emit_ge_goto | |
2796 | }; | |
2797 | #endif | |
2798 | ||
2799 | /* The "emit_ops" linux_target_ops method. */ | |
2800 | ||
2801 | static struct emit_ops * | |
2802 | s390_emit_ops (void) | |
2803 | { | |
2804 | #ifdef __s390x__ | |
2805 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
2806 | ||
2807 | if (register_size (regcache->tdesc, 0) == 8) | |
2808 | return &s390x_emit_ops; | |
2809 | else | |
2810 | #endif | |
2811 | return &s390_emit_ops_impl; | |
2812 | } | |
2813 | ||
2ec06d2e | 2814 | struct linux_target_ops the_low_target = { |
b0ded00b UW |
2815 | s390_get_pc, |
2816 | s390_set_pc, | |
dd373349 AT |
2817 | NULL, /* breakpoint_kind_from_pc */ |
2818 | s390_sw_breakpoint_from_kind, | |
b0ded00b UW |
2819 | NULL, |
2820 | s390_breakpoint_len, | |
2821 | s390_breakpoint_at, | |
b00b61e1 | 2822 | s390_supports_z_point_type, |
ee1a7ae4 UW |
2823 | NULL, |
2824 | NULL, | |
2825 | NULL, | |
2826 | NULL, | |
2827 | s390_collect_ptrace_register, | |
2828 | s390_supply_ptrace_register, | |
7d00775e AT |
2829 | NULL, /* siginfo_fixup */ |
2830 | NULL, /* new_process */ | |
04ec7890 | 2831 | NULL, /* delete_process */ |
7d00775e | 2832 | NULL, /* new_thread */ |
466eecee | 2833 | NULL, /* delete_thread */ |
7d00775e AT |
2834 | NULL, /* new_fork */ |
2835 | NULL, /* prepare_to_resume */ | |
2836 | NULL, /* process_qsupported */ | |
a4105d04 | 2837 | s390_supports_tracepoints, |
abd9baf9 MK |
2838 | s390_get_thread_area, |
2839 | s390_install_fast_tracepoint_jump_pad, | |
f39e8743 | 2840 | s390_emit_ops, |
abd9baf9 | 2841 | s390_get_min_fast_tracepoint_insn_len, |
7d00775e AT |
2842 | NULL, /* supports_range_stepping */ |
2843 | NULL, /* breakpoint_kind_from_current_state */ | |
2844 | s390_supports_hardware_single_step, | |
abd9baf9 MK |
2845 | NULL, /* get_syscall_trapinfo */ |
2846 | s390_get_ipa_tdesc_idx, | |
2ec06d2e | 2847 | }; |
3aee8918 | 2848 | |
ef0478f6 TBA |
2849 | /* The linux target ops object. */ |
2850 | ||
2851 | linux_process_target *the_linux_target = &the_s390_target; | |
2852 | ||
3aee8918 PA |
2853 | void |
2854 | initialize_low_arch (void) | |
2855 | { | |
2856 | /* Initialize the Linux target descriptions. */ | |
2857 | ||
2858 | init_registers_s390_linux32 (); | |
2859 | init_registers_s390_linux32v1 (); | |
2860 | init_registers_s390_linux32v2 (); | |
2861 | init_registers_s390_linux64 (); | |
2862 | init_registers_s390_linux64v1 (); | |
2863 | init_registers_s390_linux64v2 (); | |
4ac33720 | 2864 | init_registers_s390_te_linux64 (); |
bf2d68ab AA |
2865 | init_registers_s390_vx_linux64 (); |
2866 | init_registers_s390_tevx_linux64 (); | |
ad339634 | 2867 | init_registers_s390_gs_linux64 (); |
abd9baf9 | 2868 | #ifdef __s390x__ |
3aee8918 PA |
2869 | init_registers_s390x_linux64 (); |
2870 | init_registers_s390x_linux64v1 (); | |
2871 | init_registers_s390x_linux64v2 (); | |
4ac33720 | 2872 | init_registers_s390x_te_linux64 (); |
bf2d68ab AA |
2873 | init_registers_s390x_vx_linux64 (); |
2874 | init_registers_s390x_tevx_linux64 (); | |
ad339634 | 2875 | init_registers_s390x_gs_linux64 (); |
abd9baf9 | 2876 | #endif |
3aee8918 PA |
2877 | |
2878 | initialize_regsets_info (&s390_regsets_info); | |
3aee8918 | 2879 | initialize_regsets_info (&s390_regsets_info_3264); |
3aee8918 | 2880 | } |