Commit | Line | Data |
---|---|---|
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 | ||
3ca4edb6 TBA |
62 | const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override; |
63 | ||
007c9b97 TBA |
64 | bool supports_z_point_type (char z_type) override; |
65 | ||
47f70aa7 TBA |
66 | bool supports_tracepoints () override; |
67 | ||
809a0c35 TBA |
68 | bool supports_fast_tracepoints () override; |
69 | ||
70 | int install_fast_tracepoint_jump_pad | |
71 | (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector, | |
72 | CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry, | |
73 | CORE_ADDR *trampoline, ULONGEST *trampoline_size, | |
74 | unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size, | |
75 | CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end, | |
76 | char *err) override; | |
77 | ||
78 | int get_min_fast_tracepoint_insn_len () override; | |
79 | ||
b35db733 TBA |
80 | void low_collect_ptrace_register (regcache *regcache, int regno, |
81 | char *buf) override; | |
82 | ||
83 | void low_supply_ptrace_register (regcache *regcache, int regno, | |
84 | const char *buf) override; | |
85 | ||
797bcff5 TBA |
86 | protected: |
87 | ||
88 | void low_arch_setup () override; | |
daca57a7 TBA |
89 | |
90 | bool low_cannot_fetch_register (int regno) override; | |
91 | ||
92 | bool low_cannot_store_register (int regno) override; | |
bf9ae9d8 TBA |
93 | |
94 | bool low_supports_breakpoints () override; | |
95 | ||
96 | CORE_ADDR low_get_pc (regcache *regcache) override; | |
97 | ||
98 | void low_set_pc (regcache *regcache, CORE_ADDR newpc) override; | |
d4807ea2 TBA |
99 | |
100 | int low_decr_pc_after_break () override; | |
d7146cda TBA |
101 | |
102 | bool low_breakpoint_at (CORE_ADDR pc) override; | |
13e567af TBA |
103 | |
104 | int low_get_thread_area (int lwpid, CORE_ADDR *addrp) override; | |
ef0478f6 TBA |
105 | }; |
106 | ||
107 | /* The singleton target ops object. */ | |
108 | ||
109 | static s390_target the_s390_target; | |
110 | ||
2ec06d2e | 111 | static int s390_regmap[] = { |
265f716b DJ |
112 | PT_PSWMASK, PT_PSWADDR, |
113 | ||
114 | PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3, | |
115 | PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7, | |
116 | PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11, | |
117 | PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15, | |
118 | ||
119 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
120 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
121 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
122 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
123 | ||
265f716b DJ |
124 | PT_FPC, |
125 | ||
d0f54f9d | 126 | #ifndef __s390x__ |
265f716b DJ |
127 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, |
128 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, | |
129 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, | |
130 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, | |
131 | #else | |
132 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, | |
133 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, | |
134 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, | |
135 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, | |
136 | #endif | |
c642a434 UW |
137 | |
138 | PT_ORIGGPR2, | |
265f716b DJ |
139 | }; |
140 | ||
c642a434 | 141 | #define s390_num_regs_3264 68 |
7803799a | 142 | |
ab503087 | 143 | #ifdef __s390x__ |
7803799a UW |
144 | static int s390_regmap_3264[] = { |
145 | PT_PSWMASK, PT_PSWADDR, | |
146 | ||
493e2a69 MS |
147 | PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1, |
148 | PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3, | |
149 | PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5, | |
150 | PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7, | |
151 | PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9, | |
152 | PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11, | |
153 | PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13, | |
154 | PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15, | |
7803799a UW |
155 | |
156 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
157 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
158 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
159 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
160 | ||
161 | PT_FPC, | |
162 | ||
163 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, | |
164 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, | |
165 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, | |
166 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, | |
c642a434 UW |
167 | |
168 | PT_ORIGGPR2, | |
7803799a | 169 | }; |
ab503087 MK |
170 | #else |
171 | static int s390_regmap_3264[] = { | |
172 | PT_PSWMASK, PT_PSWADDR, | |
173 | ||
174 | -1, PT_GPR0, -1, PT_GPR1, | |
175 | -1, PT_GPR2, -1, PT_GPR3, | |
176 | -1, PT_GPR4, -1, PT_GPR5, | |
177 | -1, PT_GPR6, -1, PT_GPR7, | |
178 | -1, PT_GPR8, -1, PT_GPR9, | |
179 | -1, PT_GPR10, -1, PT_GPR11, | |
180 | -1, PT_GPR12, -1, PT_GPR13, | |
181 | -1, PT_GPR14, -1, PT_GPR15, | |
182 | ||
183 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, | |
184 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, | |
185 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, | |
186 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, | |
187 | ||
188 | PT_FPC, | |
189 | ||
190 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, | |
191 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, | |
192 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, | |
193 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, | |
194 | ||
195 | PT_ORIGGPR2, | |
196 | }; | |
7803799a UW |
197 | #endif |
198 | ||
199 | ||
daca57a7 TBA |
200 | bool |
201 | s390_target::low_cannot_fetch_register (int regno) | |
265f716b | 202 | { |
daca57a7 | 203 | return false; |
265f716b DJ |
204 | } |
205 | ||
daca57a7 TBA |
206 | bool |
207 | s390_target::low_cannot_store_register (int regno) | |
265f716b | 208 | { |
daca57a7 | 209 | return false; |
265f716b | 210 | } |
2ec06d2e | 211 | |
b35db733 TBA |
212 | void |
213 | s390_target::low_collect_ptrace_register (regcache *regcache, int regno, | |
214 | char *buf) | |
ee1a7ae4 | 215 | { |
3aee8918 | 216 | int size = register_size (regcache->tdesc, regno); |
b35db733 | 217 | const struct regs_info *regs_info = get_regs_info (); |
ab503087 MK |
218 | struct usrregs_info *usr = regs_info->usrregs; |
219 | int regaddr = usr->regmap[regno]; | |
220 | ||
ee1a7ae4 UW |
221 | if (size < sizeof (long)) |
222 | { | |
223 | memset (buf, 0, sizeof (long)); | |
224 | ||
3aee8918 PA |
225 | if ((regno ^ 1) < usr->num_regs |
226 | && usr->regmap[regno ^ 1] == regaddr) | |
7803799a | 227 | { |
18f5de3b JK |
228 | collect_register (regcache, regno & ~1, buf); |
229 | collect_register (regcache, (regno & ~1) + 1, | |
230 | buf + sizeof (long) - size); | |
7803799a | 231 | } |
d6db1fab UW |
232 | else if (regaddr == PT_PSWMASK) |
233 | { | |
234 | /* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying | |
235 | the basic addressing mode bit from the PSW address. */ | |
3451269c | 236 | gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1)); |
d6db1fab UW |
237 | collect_register (regcache, regno, buf); |
238 | collect_register (regcache, regno ^ 1, addr); | |
239 | buf[1] &= ~0x8; | |
240 | buf[size] |= (addr[0] & 0x80); | |
241 | } | |
242 | else if (regaddr == PT_PSWADDR) | |
243 | { | |
244 | /* Convert 4-byte PSW address to 8 bytes by clearing the addressing | |
245 | mode bit (which gets copied to the PSW mask instead). */ | |
246 | collect_register (regcache, regno, buf + sizeof (long) - size); | |
247 | buf[sizeof (long) - size] &= ~0x80; | |
248 | } | |
c642a434 UW |
249 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
250 | || regaddr == PT_ORIGGPR2) | |
442ea881 | 251 | collect_register (regcache, regno, buf + sizeof (long) - size); |
ee1a7ae4 | 252 | else |
442ea881 | 253 | collect_register (regcache, regno, buf); |
ee1a7ae4 | 254 | } |
ab503087 | 255 | else if (regaddr != -1) |
18f5de3b | 256 | collect_register (regcache, regno, buf); |
ee1a7ae4 UW |
257 | } |
258 | ||
b35db733 TBA |
259 | void |
260 | s390_target::low_supply_ptrace_register (regcache *regcache, int regno, | |
261 | const char *buf) | |
ee1a7ae4 | 262 | { |
3aee8918 | 263 | int size = register_size (regcache->tdesc, regno); |
b35db733 | 264 | const struct regs_info *regs_info = get_regs_info (); |
ab503087 MK |
265 | struct usrregs_info *usr = regs_info->usrregs; |
266 | int regaddr = usr->regmap[regno]; | |
267 | ||
ee1a7ae4 UW |
268 | if (size < sizeof (long)) |
269 | { | |
3aee8918 PA |
270 | if ((regno ^ 1) < usr->num_regs |
271 | && usr->regmap[regno ^ 1] == regaddr) | |
7803799a | 272 | { |
18f5de3b JK |
273 | supply_register (regcache, regno & ~1, buf); |
274 | supply_register (regcache, (regno & ~1) + 1, | |
275 | buf + sizeof (long) - size); | |
7803799a | 276 | } |
d6db1fab UW |
277 | else if (regaddr == PT_PSWMASK) |
278 | { | |
279 | /* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying | |
280 | the basic addressing mode into the PSW address. */ | |
3451269c PA |
281 | gdb_byte *mask = (gdb_byte *) alloca (size); |
282 | gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1)); | |
d6db1fab UW |
283 | memcpy (mask, buf, size); |
284 | mask[1] |= 0x8; | |
285 | supply_register (regcache, regno, mask); | |
286 | ||
287 | collect_register (regcache, regno ^ 1, addr); | |
288 | addr[0] &= ~0x80; | |
289 | addr[0] |= (buf[size] & 0x80); | |
290 | supply_register (regcache, regno ^ 1, addr); | |
291 | } | |
292 | else if (regaddr == PT_PSWADDR) | |
293 | { | |
294 | /* Convert 8-byte PSW address to 4 bytes by truncating, but | |
295 | keeping the addressing mode bit (which was set from the mask). */ | |
3451269c | 296 | gdb_byte *addr = (gdb_byte *) alloca (size); |
d6db1fab UW |
297 | char amode; |
298 | collect_register (regcache, regno, addr); | |
299 | amode = addr[0] & 0x80; | |
300 | memcpy (addr, buf + sizeof (long) - size, size); | |
301 | addr[0] &= ~0x80; | |
302 | addr[0] |= amode; | |
303 | supply_register (regcache, regno, addr); | |
304 | } | |
c642a434 UW |
305 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
306 | || regaddr == PT_ORIGGPR2) | |
442ea881 | 307 | supply_register (regcache, regno, buf + sizeof (long) - size); |
ee1a7ae4 | 308 | else |
442ea881 | 309 | supply_register (regcache, regno, buf); |
ee1a7ae4 | 310 | } |
ab503087 | 311 | else if (regaddr != -1) |
442ea881 | 312 | supply_register (regcache, regno, buf); |
ee1a7ae4 UW |
313 | } |
314 | ||
b7149293 UW |
315 | /* Provide only a fill function for the general register set. ps_lgetregs |
316 | will use this for NPTL support. */ | |
317 | ||
3aee8918 PA |
318 | static void |
319 | s390_fill_gregset (struct regcache *regcache, void *buf) | |
b7149293 UW |
320 | { |
321 | int i; | |
aa8d21c9 | 322 | const struct regs_info *regs_info = the_linux_target->get_regs_info (); |
3aee8918 | 323 | struct usrregs_info *usr = regs_info->usrregs; |
b7149293 | 324 | |
3aee8918 | 325 | for (i = 0; i < usr->num_regs; i++) |
7803799a | 326 | { |
3aee8918 PA |
327 | if (usr->regmap[i] < PT_PSWMASK |
328 | || usr->regmap[i] > PT_ACR15) | |
7803799a UW |
329 | continue; |
330 | ||
b35db733 TBA |
331 | ((s390_target *) the_linux_target)->low_collect_ptrace_register |
332 | (regcache, i, (char *) buf + usr->regmap[i]); | |
7803799a | 333 | } |
b7149293 UW |
334 | } |
335 | ||
c642a434 UW |
336 | /* Fill and store functions for extended register sets. */ |
337 | ||
ab503087 MK |
338 | #ifndef __s390x__ |
339 | static void | |
340 | s390_fill_gprs_high (struct regcache *regcache, void *buf) | |
341 | { | |
342 | int r0h = find_regno (regcache->tdesc, "r0h"); | |
343 | int i; | |
344 | ||
345 | for (i = 0; i < 16; i++) | |
346 | collect_register (regcache, r0h + 2 * i, (char *) buf + 4 * i); | |
347 | } | |
348 | ||
349 | static void | |
350 | s390_store_gprs_high (struct regcache *regcache, const void *buf) | |
351 | { | |
352 | int r0h = find_regno (regcache->tdesc, "r0h"); | |
353 | int i; | |
354 | ||
355 | for (i = 0; i < 16; i++) | |
356 | supply_register (regcache, r0h + 2 * i, (const char *) buf + 4 * i); | |
357 | } | |
358 | #endif | |
359 | ||
c642a434 UW |
360 | static void |
361 | s390_store_last_break (struct regcache *regcache, const void *buf) | |
362 | { | |
3aee8918 PA |
363 | const char *p; |
364 | ||
365 | p = (const char *) buf + 8 - register_size (regcache->tdesc, 0); | |
366 | supply_register_by_name (regcache, "last_break", p); | |
c642a434 UW |
367 | } |
368 | ||
369 | static void | |
370 | s390_fill_system_call (struct regcache *regcache, void *buf) | |
371 | { | |
372 | collect_register_by_name (regcache, "system_call", buf); | |
373 | } | |
374 | ||
375 | static void | |
376 | s390_store_system_call (struct regcache *regcache, const void *buf) | |
377 | { | |
378 | supply_register_by_name (regcache, "system_call", buf); | |
379 | } | |
380 | ||
e5a9158d AA |
381 | static void |
382 | s390_store_tdb (struct regcache *regcache, const void *buf) | |
383 | { | |
384 | int tdb0 = find_regno (regcache->tdesc, "tdb0"); | |
385 | int tr0 = find_regno (regcache->tdesc, "tr0"); | |
386 | int i; | |
387 | ||
388 | for (i = 0; i < 4; i++) | |
389 | supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i); | |
390 | ||
391 | for (i = 0; i < 16; i++) | |
392 | supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i)); | |
393 | } | |
394 | ||
bf2d68ab AA |
395 | static void |
396 | s390_fill_vxrs_low (struct regcache *regcache, void *buf) | |
397 | { | |
398 | int v0 = find_regno (regcache->tdesc, "v0l"); | |
399 | int i; | |
400 | ||
401 | for (i = 0; i < 16; i++) | |
402 | collect_register (regcache, v0 + i, (char *) buf + 8 * i); | |
403 | } | |
404 | ||
405 | static void | |
406 | s390_store_vxrs_low (struct regcache *regcache, const void *buf) | |
407 | { | |
408 | int v0 = find_regno (regcache->tdesc, "v0l"); | |
409 | int i; | |
410 | ||
411 | for (i = 0; i < 16; i++) | |
412 | supply_register (regcache, v0 + i, (const char *) buf + 8 * i); | |
413 | } | |
414 | ||
415 | static void | |
416 | s390_fill_vxrs_high (struct regcache *regcache, void *buf) | |
417 | { | |
418 | int v16 = find_regno (regcache->tdesc, "v16"); | |
419 | int i; | |
420 | ||
421 | for (i = 0; i < 16; i++) | |
422 | collect_register (regcache, v16 + i, (char *) buf + 16 * i); | |
423 | } | |
424 | ||
425 | static void | |
426 | s390_store_vxrs_high (struct regcache *regcache, const void *buf) | |
427 | { | |
428 | int v16 = find_regno (regcache->tdesc, "v16"); | |
429 | int i; | |
430 | ||
431 | for (i = 0; i < 16; i++) | |
432 | supply_register (regcache, v16 + i, (const char *) buf + 16 * i); | |
433 | } | |
434 | ||
ad339634 AA |
435 | static void |
436 | s390_store_gs (struct regcache *regcache, const void *buf) | |
437 | { | |
438 | int gsd = find_regno (regcache->tdesc, "gsd"); | |
439 | int i; | |
440 | ||
441 | for (i = 0; i < 3; i++) | |
442 | supply_register (regcache, gsd + i, (const char *) buf + 8 * (i + 1)); | |
443 | } | |
444 | ||
ad339634 AA |
445 | static void |
446 | s390_store_gsbc (struct regcache *regcache, const void *buf) | |
447 | { | |
448 | int bc_gsd = find_regno (regcache->tdesc, "bc_gsd"); | |
449 | int i; | |
450 | ||
451 | for (i = 0; i < 3; i++) | |
452 | supply_register (regcache, bc_gsd + i, (const char *) buf + 8 * (i + 1)); | |
453 | } | |
454 | ||
3aee8918 | 455 | static struct regset_info s390_regsets[] = { |
1570b33e | 456 | { 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL }, |
ab503087 MK |
457 | #ifndef __s390x__ |
458 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_HIGH_GPRS, 0, | |
459 | EXTENDED_REGS, s390_fill_gprs_high, s390_store_gprs_high }, | |
460 | #endif | |
feea5f36 AA |
461 | /* Last break address is read-only; no fill function. */ |
462 | { PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS, | |
463 | NULL, s390_store_last_break }, | |
c642a434 UW |
464 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0, |
465 | EXTENDED_REGS, s390_fill_system_call, s390_store_system_call }, | |
e5a9158d AA |
466 | /* TDB is read-only. */ |
467 | { PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS, | |
468 | NULL, s390_store_tdb }, | |
bf2d68ab AA |
469 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_LOW, 0, |
470 | EXTENDED_REGS, s390_fill_vxrs_low, s390_store_vxrs_low }, | |
471 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_HIGH, 0, | |
472 | EXTENDED_REGS, s390_fill_vxrs_high, s390_store_vxrs_high }, | |
c49bd90b AA |
473 | /* Guarded storage registers are read-only. */ |
474 | { PTRACE_GETREGSET, -1, NT_S390_GS_CB, 0, EXTENDED_REGS, | |
475 | NULL, s390_store_gs }, | |
476 | { PTRACE_GETREGSET, -1, NT_S390_GS_BC, 0, EXTENDED_REGS, | |
477 | NULL, s390_store_gsbc }, | |
50bc912a | 478 | NULL_REGSET |
b7149293 UW |
479 | }; |
480 | ||
b0ded00b | 481 | |
dd373349 | 482 | static const gdb_byte s390_breakpoint[] = { 0, 1 }; |
b0ded00b UW |
483 | #define s390_breakpoint_len 2 |
484 | ||
3ca4edb6 | 485 | /* Implementation of target ops method "sw_breakpoint_from_kind". */ |
dd373349 | 486 | |
3ca4edb6 TBA |
487 | const gdb_byte * |
488 | s390_target::sw_breakpoint_from_kind (int kind, int *size) | |
dd373349 AT |
489 | { |
490 | *size = s390_breakpoint_len; | |
491 | return s390_breakpoint; | |
492 | } | |
493 | ||
bf9ae9d8 TBA |
494 | bool |
495 | s390_target::low_supports_breakpoints () | |
496 | { | |
497 | return true; | |
498 | } | |
499 | ||
500 | CORE_ADDR | |
501 | s390_target::low_get_pc (regcache *regcache) | |
b0ded00b | 502 | { |
3aee8918 | 503 | if (register_size (regcache->tdesc, 0) == 4) |
d61ddec4 | 504 | { |
d6db1fab UW |
505 | unsigned int pswa; |
506 | collect_register_by_name (regcache, "pswa", &pswa); | |
507 | return pswa & 0x7fffffff; | |
d61ddec4 UW |
508 | } |
509 | else | |
510 | { | |
511 | unsigned long pc; | |
442ea881 | 512 | collect_register_by_name (regcache, "pswa", &pc); |
d61ddec4 UW |
513 | return pc; |
514 | } | |
b0ded00b UW |
515 | } |
516 | ||
bf9ae9d8 TBA |
517 | void |
518 | s390_target::low_set_pc (regcache *regcache, CORE_ADDR newpc) | |
b0ded00b | 519 | { |
3aee8918 | 520 | if (register_size (regcache->tdesc, 0) == 4) |
d61ddec4 | 521 | { |
d6db1fab UW |
522 | unsigned int pswa; |
523 | collect_register_by_name (regcache, "pswa", &pswa); | |
524 | pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff); | |
525 | supply_register_by_name (regcache, "pswa", &pswa); | |
d61ddec4 UW |
526 | } |
527 | else | |
528 | { | |
529 | unsigned long pc = newpc; | |
442ea881 | 530 | supply_register_by_name (regcache, "pswa", &pc); |
d61ddec4 | 531 | } |
b0ded00b UW |
532 | } |
533 | ||
d4807ea2 TBA |
534 | int |
535 | s390_target::low_decr_pc_after_break () | |
536 | { | |
537 | return s390_breakpoint_len; | |
538 | } | |
539 | ||
7edb9bd3 AA |
540 | /* Determine the word size for the given PID, in bytes. */ |
541 | ||
542 | #ifdef __s390x__ | |
543 | static int | |
544 | s390_get_wordsize (int pid) | |
545 | { | |
546 | errno = 0; | |
547 | PTRACE_XFER_TYPE pswm = ptrace (PTRACE_PEEKUSER, pid, | |
548 | (PTRACE_TYPE_ARG3) 0, | |
549 | (PTRACE_TYPE_ARG4) 0); | |
f69c5afb AA |
550 | if (errno != 0) |
551 | { | |
422186a9 | 552 | warning (_("Couldn't determine word size, assuming 64-bit.")); |
f69c5afb AA |
553 | return 8; |
554 | } | |
7edb9bd3 AA |
555 | /* Derive word size from extended addressing mode (PSW bit 31). */ |
556 | return pswm & (1L << 32) ? 8 : 4; | |
557 | } | |
558 | #else | |
559 | #define s390_get_wordsize(pid) 4 | |
560 | #endif | |
561 | ||
c642a434 UW |
562 | static int |
563 | s390_check_regset (int pid, int regset, int regsize) | |
564 | { | |
3451269c | 565 | void *buf = alloca (regsize); |
c642a434 UW |
566 | struct iovec iov; |
567 | ||
568 | iov.iov_base = buf; | |
569 | iov.iov_len = regsize; | |
570 | ||
4ac33720 UW |
571 | if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0 |
572 | || errno == ENODATA) | |
c642a434 | 573 | return 1; |
4ac33720 | 574 | return 0; |
c642a434 UW |
575 | } |
576 | ||
3aee8918 PA |
577 | /* For a 31-bit inferior, whether the kernel supports using the full |
578 | 64-bit GPRs. */ | |
579 | static int have_hwcap_s390_high_gprs = 0; | |
abd9baf9 | 580 | static int have_hwcap_s390_vx = 0; |
3aee8918 | 581 | |
797bcff5 TBA |
582 | void |
583 | s390_target::low_arch_setup () | |
d61ddec4 | 584 | { |
3aee8918 | 585 | const struct target_desc *tdesc; |
c642a434 UW |
586 | struct regset_info *regset; |
587 | ||
7edb9bd3 | 588 | /* Determine word size and HWCAP. */ |
0bfdf32f | 589 | int pid = pid_of (current_thread); |
7edb9bd3 | 590 | int wordsize = s390_get_wordsize (pid); |
974c89e0 | 591 | unsigned long hwcap = linux_get_hwcap (wordsize); |
7edb9bd3 AA |
592 | |
593 | /* Check whether the kernel supports extra register sets. */ | |
c642a434 UW |
594 | int have_regset_last_break |
595 | = s390_check_regset (pid, NT_S390_LAST_BREAK, 8); | |
596 | int have_regset_system_call | |
597 | = s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4); | |
7edb9bd3 AA |
598 | int have_regset_tdb |
599 | = (s390_check_regset (pid, NT_S390_TDB, 256) | |
600 | && (hwcap & HWCAP_S390_TE) != 0); | |
601 | int have_regset_vxrs | |
602 | = (s390_check_regset (pid, NT_S390_VXRS_LOW, 128) | |
603 | && s390_check_regset (pid, NT_S390_VXRS_HIGH, 256) | |
604 | && (hwcap & HWCAP_S390_VX) != 0); | |
605 | int have_regset_gs | |
606 | = (s390_check_regset (pid, NT_S390_GS_CB, 32) | |
607 | && s390_check_regset (pid, NT_S390_GS_BC, 32) | |
608 | && (hwcap & HWCAP_S390_GS) != 0); | |
d61ddec4 | 609 | |
d61ddec4 | 610 | { |
ab503087 | 611 | #ifdef __s390x__ |
7edb9bd3 | 612 | if (wordsize == 8) |
c642a434 | 613 | { |
ad339634 AA |
614 | if (have_regset_gs) |
615 | tdesc = tdesc_s390x_gs_linux64; | |
616 | else if (have_regset_vxrs) | |
bf2d68ab AA |
617 | tdesc = (have_regset_tdb ? tdesc_s390x_tevx_linux64 : |
618 | tdesc_s390x_vx_linux64); | |
619 | else if (have_regset_tdb) | |
4ac33720 | 620 | tdesc = tdesc_s390x_te_linux64; |
6682d959 | 621 | else if (have_regset_system_call) |
3aee8918 | 622 | tdesc = tdesc_s390x_linux64v2; |
c642a434 | 623 | else if (have_regset_last_break) |
3aee8918 | 624 | tdesc = tdesc_s390x_linux64v1; |
c642a434 | 625 | else |
3aee8918 | 626 | tdesc = tdesc_s390x_linux64; |
c642a434 | 627 | } |
7803799a UW |
628 | |
629 | /* For a 31-bit inferior, check whether the kernel supports | |
630 | using the full 64-bit GPRs. */ | |
ab503087 MK |
631 | else |
632 | #endif | |
7edb9bd3 | 633 | if (hwcap & HWCAP_S390_HIGH_GPRS) |
7803799a | 634 | { |
3aee8918 | 635 | have_hwcap_s390_high_gprs = 1; |
ad339634 AA |
636 | if (have_regset_gs) |
637 | tdesc = tdesc_s390_gs_linux64; | |
638 | else if (have_regset_vxrs) | |
bf2d68ab AA |
639 | tdesc = (have_regset_tdb ? tdesc_s390_tevx_linux64 : |
640 | tdesc_s390_vx_linux64); | |
641 | else if (have_regset_tdb) | |
4ac33720 UW |
642 | tdesc = tdesc_s390_te_linux64; |
643 | else if (have_regset_system_call) | |
3aee8918 | 644 | tdesc = tdesc_s390_linux64v2; |
c642a434 | 645 | else if (have_regset_last_break) |
3aee8918 | 646 | tdesc = tdesc_s390_linux64v1; |
c642a434 | 647 | else |
3aee8918 | 648 | tdesc = tdesc_s390_linux64; |
7803799a | 649 | } |
7edb9bd3 AA |
650 | else |
651 | { | |
652 | /* Assume 31-bit inferior process. */ | |
653 | if (have_regset_system_call) | |
654 | tdesc = tdesc_s390_linux32v2; | |
655 | else if (have_regset_last_break) | |
656 | tdesc = tdesc_s390_linux32v1; | |
657 | else | |
658 | tdesc = tdesc_s390_linux32; | |
659 | } | |
abd9baf9 MK |
660 | |
661 | have_hwcap_s390_vx = have_regset_vxrs; | |
d61ddec4 | 662 | } |
6682d959 AA |
663 | |
664 | /* Update target_regsets according to available register sets. */ | |
feea5f36 | 665 | for (regset = s390_regsets; regset->size >= 0; regset++) |
6682d959 AA |
666 | if (regset->get_request == PTRACE_GETREGSET) |
667 | switch (regset->nt_type) | |
668 | { | |
ab503087 MK |
669 | #ifndef __s390x__ |
670 | case NT_S390_HIGH_GPRS: | |
671 | regset->size = have_hwcap_s390_high_gprs ? 64 : 0; | |
672 | break; | |
673 | #endif | |
6682d959 | 674 | case NT_S390_LAST_BREAK: |
ab503087 | 675 | regset->size = have_regset_last_break ? 8 : 0; |
6682d959 AA |
676 | break; |
677 | case NT_S390_SYSTEM_CALL: | |
ab503087 | 678 | regset->size = have_regset_system_call ? 4 : 0; |
6682d959 AA |
679 | break; |
680 | case NT_S390_TDB: | |
681 | regset->size = have_regset_tdb ? 256 : 0; | |
bf2d68ab AA |
682 | break; |
683 | case NT_S390_VXRS_LOW: | |
684 | regset->size = have_regset_vxrs ? 128 : 0; | |
685 | break; | |
686 | case NT_S390_VXRS_HIGH: | |
687 | regset->size = have_regset_vxrs ? 256 : 0; | |
688 | break; | |
ad339634 AA |
689 | case NT_S390_GS_CB: |
690 | case NT_S390_GS_BC: | |
691 | regset->size = have_regset_gs ? 32 : 0; | |
6682d959 AA |
692 | default: |
693 | break; | |
694 | } | |
695 | ||
3aee8918 | 696 | current_process ()->tdesc = tdesc; |
d61ddec4 UW |
697 | } |
698 | ||
699 | ||
d7146cda TBA |
700 | bool |
701 | s390_target::low_breakpoint_at (CORE_ADDR pc) | |
b0ded00b UW |
702 | { |
703 | unsigned char c[s390_breakpoint_len]; | |
704 | read_inferior_memory (pc, c, s390_breakpoint_len); | |
705 | return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0; | |
706 | } | |
707 | ||
b00b61e1 MK |
708 | /* Breakpoint/Watchpoint support. */ |
709 | ||
007c9b97 | 710 | /* The "supports_z_point_type" target ops method. */ |
b00b61e1 | 711 | |
007c9b97 TBA |
712 | bool |
713 | s390_target::supports_z_point_type (char z_type) | |
b00b61e1 MK |
714 | { |
715 | switch (z_type) | |
716 | { | |
717 | case Z_PACKET_SW_BP: | |
007c9b97 | 718 | return true; |
b00b61e1 | 719 | default: |
007c9b97 | 720 | return false; |
b00b61e1 MK |
721 | } |
722 | } | |
723 | ||
7d00775e AT |
724 | /* Support for hardware single step. */ |
725 | ||
726 | static int | |
727 | s390_supports_hardware_single_step (void) | |
728 | { | |
729 | return 1; | |
730 | } | |
731 | ||
3aee8918 PA |
732 | static struct usrregs_info s390_usrregs_info = |
733 | { | |
734 | s390_num_regs, | |
735 | s390_regmap, | |
736 | }; | |
737 | ||
738 | static struct regsets_info s390_regsets_info = | |
739 | { | |
740 | s390_regsets, /* regsets */ | |
741 | 0, /* num_regsets */ | |
742 | NULL, /* disabled_regsets */ | |
743 | }; | |
744 | ||
aa8d21c9 | 745 | static struct regs_info myregs_info = |
3aee8918 PA |
746 | { |
747 | NULL, /* regset_bitmap */ | |
748 | &s390_usrregs_info, | |
749 | &s390_regsets_info | |
750 | }; | |
751 | ||
3aee8918 PA |
752 | static struct usrregs_info s390_usrregs_info_3264 = |
753 | { | |
754 | s390_num_regs_3264, | |
755 | s390_regmap_3264 | |
756 | }; | |
757 | ||
758 | static struct regsets_info s390_regsets_info_3264 = | |
759 | { | |
760 | s390_regsets, /* regsets */ | |
761 | 0, /* num_regsets */ | |
762 | NULL, /* disabled_regsets */ | |
763 | }; | |
764 | ||
765 | static struct regs_info regs_info_3264 = | |
766 | { | |
767 | NULL, /* regset_bitmap */ | |
768 | &s390_usrregs_info_3264, | |
769 | &s390_regsets_info_3264 | |
770 | }; | |
3aee8918 | 771 | |
aa8d21c9 TBA |
772 | const regs_info * |
773 | s390_target::get_regs_info () | |
3aee8918 | 774 | { |
3aee8918 PA |
775 | if (have_hwcap_s390_high_gprs) |
776 | { | |
ab503087 | 777 | #ifdef __s390x__ |
3aee8918 PA |
778 | const struct target_desc *tdesc = current_process ()->tdesc; |
779 | ||
780 | if (register_size (tdesc, 0) == 4) | |
781 | return ®s_info_3264; | |
ab503087 MK |
782 | #else |
783 | return ®s_info_3264; | |
3aee8918 | 784 | #endif |
ab503087 | 785 | } |
aa8d21c9 | 786 | return &myregs_info; |
3aee8918 | 787 | } |
b0ded00b | 788 | |
47f70aa7 | 789 | /* The "supports_tracepoints" target ops method. */ |
a4105d04 | 790 | |
47f70aa7 TBA |
791 | bool |
792 | s390_target::supports_tracepoints () | |
a4105d04 | 793 | { |
47f70aa7 | 794 | return true; |
a4105d04 MK |
795 | } |
796 | ||
13e567af | 797 | /* Implementation of linux target ops method "low_get_thread_area". */ |
abd9baf9 | 798 | |
13e567af TBA |
799 | int |
800 | s390_target::low_get_thread_area (int lwpid, CORE_ADDR *addrp) | |
abd9baf9 MK |
801 | { |
802 | CORE_ADDR res = ptrace (PTRACE_PEEKUSER, lwpid, (long) PT_ACR0, (long) 0); | |
803 | #ifdef __s390x__ | |
804 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
805 | ||
806 | if (register_size (regcache->tdesc, 0) == 4) | |
807 | res &= 0xffffffffull; | |
808 | #endif | |
809 | *addrp = res; | |
810 | return 0; | |
811 | } | |
812 | ||
813 | ||
814 | /* Fast tracepoint support. | |
815 | ||
816 | The register save area on stack is identical for all targets: | |
817 | ||
818 | 0x000+i*0x10: VR0-VR31 | |
819 | 0x200+i*8: GR0-GR15 | |
820 | 0x280+i*4: AR0-AR15 | |
821 | 0x2c0: PSWM [64-bit] | |
822 | 0x2c8: PSWA [64-bit] | |
823 | 0x2d0: FPC | |
824 | ||
825 | If we're on 31-bit linux, we just don't store the high parts of the GPRs. | |
826 | Likewise, if there's no VX support, we just store the FRs into the slots | |
827 | of low VR halves. The agent code is responsible for rearranging that | |
828 | into regcache. */ | |
829 | ||
830 | /* Code sequence saving GPRs for 31-bit target with no high GPRs. There's | |
831 | one trick used at the very beginning: since there's no way to allocate | |
832 | stack space without destroying CC (lay instruction can do it, but it's | |
833 | only supported on later CPUs), we take 4 different execution paths for | |
834 | every possible value of CC, allocate stack space, save %r0, stuff the | |
835 | CC value in %r0 (shifted to match its position in PSWM high word), | |
836 | then branch to common path. */ | |
837 | ||
838 | static const unsigned char s390_ft_entry_gpr_esa[] = { | |
839 | 0xa7, 0x14, 0x00, 0x1e, /* jo .Lcc3 */ | |
840 | 0xa7, 0x24, 0x00, 0x14, /* jh .Lcc2 */ | |
841 | 0xa7, 0x44, 0x00, 0x0a, /* jl .Lcc1 */ | |
842 | /* CC = 0 */ | |
843 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
844 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
845 | 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */ | |
846 | 0xa7, 0xf4, 0x00, 0x18, /* j .Lccdone */ | |
847 | /* .Lcc1: */ | |
848 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
849 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
850 | 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */ | |
851 | 0xa7, 0xf4, 0x00, 0x10, /* j .Lccdone */ | |
852 | /* .Lcc2: */ | |
853 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
854 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
855 | 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */ | |
856 | 0xa7, 0xf4, 0x00, 0x08, /* j .Lccdone */ | |
857 | /* .Lcc3: */ | |
858 | 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */ | |
859 | 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */ | |
860 | 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */ | |
861 | /* .Lccdone: */ | |
862 | 0x50, 0x10, 0xf2, 0x0c, /* st %r1, 0x20c(%r15) */ | |
863 | 0x50, 0x20, 0xf2, 0x14, /* st %r2, 0x214(%r15) */ | |
864 | 0x50, 0x30, 0xf2, 0x1c, /* st %r3, 0x21c(%r15) */ | |
865 | 0x50, 0x40, 0xf2, 0x24, /* st %r4, 0x224(%r15) */ | |
866 | 0x50, 0x50, 0xf2, 0x2c, /* st %r5, 0x22c(%r15) */ | |
867 | 0x50, 0x60, 0xf2, 0x34, /* st %r6, 0x234(%r15) */ | |
868 | 0x50, 0x70, 0xf2, 0x3c, /* st %r7, 0x23c(%r15) */ | |
869 | 0x50, 0x80, 0xf2, 0x44, /* st %r8, 0x244(%r15) */ | |
870 | 0x50, 0x90, 0xf2, 0x4c, /* st %r9, 0x24c(%r15) */ | |
871 | 0x50, 0xa0, 0xf2, 0x54, /* st %r10, 0x254(%r15) */ | |
872 | 0x50, 0xb0, 0xf2, 0x5c, /* st %r11, 0x25c(%r15) */ | |
873 | 0x50, 0xc0, 0xf2, 0x64, /* st %r12, 0x264(%r15) */ | |
874 | 0x50, 0xd0, 0xf2, 0x6c, /* st %r13, 0x26c(%r15) */ | |
875 | 0x50, 0xe0, 0xf2, 0x74, /* st %r14, 0x274(%r15) */ | |
876 | /* Compute original value of %r15 and store it. We use ahi instead | |
877 | of la to preserve the whole value, and not just the low 31 bits. | |
878 | This is not particularly important here, but essential in the | |
879 | zarch case where someone might be using the high word of %r15 | |
880 | as an extra register. */ | |
881 | 0x18, 0x1f, /* lr %r1, %r15 */ | |
882 | 0xa7, 0x1a, 0x03, 0x00, /* ahi %r1, 0x300 */ | |
883 | 0x50, 0x10, 0xf2, 0x7c, /* st %r1, 0x27c(%r15) */ | |
884 | }; | |
885 | ||
886 | /* Code sequence saving GPRs for 31-bit target with high GPRs and for 64-bit | |
887 | target. Same as above, except this time we can use load/store multiple, | |
888 | since the 64-bit regs are tightly packed. */ | |
889 | ||
890 | static const unsigned char s390_ft_entry_gpr_zarch[] = { | |
891 | 0xa7, 0x14, 0x00, 0x21, /* jo .Lcc3 */ | |
892 | 0xa7, 0x24, 0x00, 0x16, /* jh .Lcc2 */ | |
893 | 0xa7, 0x44, 0x00, 0x0b, /* jl .Lcc1 */ | |
894 | /* CC = 0 */ | |
895 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
896 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
897 | 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */ | |
898 | 0xa7, 0xf4, 0x00, 0x1b, /* j .Lccdone */ | |
899 | /* .Lcc1: */ | |
900 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
901 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
902 | 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */ | |
903 | 0xa7, 0xf4, 0x00, 0x12, /* j .Lccdone */ | |
904 | /* .Lcc2: */ | |
905 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
906 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
907 | 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */ | |
908 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lccdone */ | |
909 | /* .Lcc3: */ | |
910 | 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */ | |
911 | 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */ | |
912 | 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */ | |
913 | /* .Lccdone: */ | |
914 | 0xb9, 0x04, 0x00, 0x1f, /* lgr %r1, %r15 */ | |
915 | 0xa7, 0x1b, 0x03, 0x00, /* aghi %r1, 0x300 */ | |
916 | 0xe3, 0x10, 0xf2, 0x78, 0x00, 0x24, /* stg %r1, 0x278(%r15) */ | |
917 | }; | |
918 | ||
919 | /* Code sequence saving ARs, PSWM and FPC. PSWM has to be assembled from | |
920 | current PSWM (read by epsw) and CC from entry (in %r0). */ | |
921 | ||
922 | static const unsigned char s390_ft_entry_misc[] = { | |
923 | 0x9b, 0x0f, 0xf2, 0x80, /* stam %a0, %a15, 0x20(%%r15) */ | |
924 | 0xb9, 0x8d, 0x00, 0x23, /* epsw %r2, %r3 */ | |
925 | 0xa7, 0x18, 0xcf, 0xff, /* lhi %r1, ~0x3000 */ | |
926 | 0x14, 0x21, /* nr %r2, %r1 */ | |
927 | 0x16, 0x20, /* or %r2, %r0 */ | |
928 | 0x50, 0x20, 0xf2, 0xc0, /* st %r2, 0x2c0(%r15) */ | |
929 | 0x50, 0x30, 0xf2, 0xc4, /* st %r3, 0x2c4(%r15) */ | |
930 | 0xb2, 0x9c, 0xf2, 0xd0, /* stfpc 0x2d0(%r15) */ | |
931 | }; | |
932 | ||
933 | /* Code sequence saving FRs, used if VX not supported. */ | |
934 | ||
935 | static const unsigned char s390_ft_entry_fr[] = { | |
936 | 0x60, 0x00, 0xf0, 0x00, /* std %f0, 0x000(%r15) */ | |
937 | 0x60, 0x10, 0xf0, 0x10, /* std %f1, 0x010(%r15) */ | |
938 | 0x60, 0x20, 0xf0, 0x20, /* std %f2, 0x020(%r15) */ | |
939 | 0x60, 0x30, 0xf0, 0x30, /* std %f3, 0x030(%r15) */ | |
940 | 0x60, 0x40, 0xf0, 0x40, /* std %f4, 0x040(%r15) */ | |
941 | 0x60, 0x50, 0xf0, 0x50, /* std %f5, 0x050(%r15) */ | |
942 | 0x60, 0x60, 0xf0, 0x60, /* std %f6, 0x060(%r15) */ | |
943 | 0x60, 0x70, 0xf0, 0x70, /* std %f7, 0x070(%r15) */ | |
944 | 0x60, 0x80, 0xf0, 0x80, /* std %f8, 0x080(%r15) */ | |
945 | 0x60, 0x90, 0xf0, 0x90, /* std %f9, 0x090(%r15) */ | |
946 | 0x60, 0xa0, 0xf0, 0xa0, /* std %f10, 0x0a0(%r15) */ | |
947 | 0x60, 0xb0, 0xf0, 0xb0, /* std %f11, 0x0b0(%r15) */ | |
948 | 0x60, 0xc0, 0xf0, 0xc0, /* std %f12, 0x0c0(%r15) */ | |
949 | 0x60, 0xd0, 0xf0, 0xd0, /* std %f13, 0x0d0(%r15) */ | |
950 | 0x60, 0xe0, 0xf0, 0xe0, /* std %f14, 0x0e0(%r15) */ | |
951 | 0x60, 0xf0, 0xf0, 0xf0, /* std %f15, 0x0f0(%r15) */ | |
952 | }; | |
953 | ||
954 | /* Code sequence saving VRs, used if VX not supported. */ | |
955 | ||
956 | static const unsigned char s390_ft_entry_vr[] = { | |
957 | 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x3e, /* vstm %v0, %v15, 0x000(%r15) */ | |
958 | 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x3e, /* vstm %v16, %v31, 0x100(%r15) */ | |
959 | }; | |
960 | ||
961 | /* Code sequence doing the collection call for 31-bit target. %r1 contains | |
962 | the address of the literal pool. */ | |
963 | ||
964 | static const unsigned char s390_ft_main_31[] = { | |
965 | /* Load the literals into registers. */ | |
966 | 0x58, 0x50, 0x10, 0x00, /* l %r5, 0x0(%r1) */ | |
967 | 0x58, 0x20, 0x10, 0x04, /* l %r2, 0x4(%r1) */ | |
968 | 0x58, 0x40, 0x10, 0x08, /* l %r4, 0x8(%r1) */ | |
969 | 0x58, 0x60, 0x10, 0x0c, /* l %r6, 0xc(%r1) */ | |
970 | /* Save original PSWA (tracepoint address | 0x80000000). */ | |
971 | 0x50, 0x50, 0xf2, 0xcc, /* st %r5, 0x2cc(%r15) */ | |
972 | /* Construct a collecting_t object at %r15+0x2e0. */ | |
973 | 0x50, 0x20, 0xf2, 0xe0, /* st %r2, 0x2e0(%r15) */ | |
974 | 0x9b, 0x00, 0xf2, 0xe4, /* stam %a0, %a0, 0x2e4(%r15) */ | |
975 | /* Move its address to %r0. */ | |
976 | 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */ | |
977 | /* Take the lock. */ | |
978 | /* .Lloop: */ | |
979 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */ | |
980 | 0xba, 0x10, 0x60, 0x00, /* cs %r1, %r0, 0(%r6) */ | |
981 | 0xa7, 0x74, 0xff, 0xfc, /* jne .Lloop */ | |
982 | /* Address of the register save block to %r3. */ | |
983 | 0x18, 0x3f, /* lr %r3, %r15 */ | |
984 | /* Make a stack frame, so that we can call the collector. */ | |
985 | 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */ | |
986 | /* Call it. */ | |
987 | 0x0d, 0xe4, /* basr %r14, %r4 */ | |
988 | /* And get rid of the stack frame again. */ | |
989 | 0x41, 0xf0, 0xf0, 0x60, /* la %r15, 0x60(%r15) */ | |
990 | /* Leave the lock. */ | |
991 | 0x07, 0xf0, /* br %r0 */ | |
992 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */ | |
993 | 0x50, 0x10, 0x60, 0x00, /* st %t1, 0(%r6) */ | |
994 | }; | |
995 | ||
996 | /* Code sequence doing the collection call for 64-bit target. %r1 contains | |
997 | the address of the literal pool. */ | |
998 | ||
999 | static const unsigned char s390_ft_main_64[] = { | |
1000 | /* Load the literals into registers. */ | |
1001 | 0xe3, 0x50, 0x10, 0x00, 0x00, 0x04, /* lg %r5, 0x00(%r1) */ | |
1002 | 0xe3, 0x20, 0x10, 0x08, 0x00, 0x04, /* lg %r2, 0x08(%r1) */ | |
1003 | 0xe3, 0x40, 0x10, 0x10, 0x00, 0x04, /* lg %r4, 0x10(%r1) */ | |
1004 | 0xe3, 0x60, 0x10, 0x18, 0x00, 0x04, /* lg %r6, 0x18(%r1) */ | |
1005 | /* Save original PSWA (tracepoint address). */ | |
1006 | 0xe3, 0x50, 0xf2, 0xc8, 0x00, 0x24, /* stg %r5, 0x2c8(%r15) */ | |
1007 | /* Construct a collecting_t object at %r15+0x2e0. */ | |
1008 | 0xe3, 0x20, 0xf2, 0xe0, 0x00, 0x24, /* stg %r2, 0x2e0(%r15) */ | |
1009 | 0x9b, 0x01, 0xf2, 0xe8, /* stam %a0, %a1, 0x2e8(%r15) */ | |
1010 | /* Move its address to %r0. */ | |
1011 | 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */ | |
1012 | /* Take the lock. */ | |
1013 | /* .Lloop: */ | |
1014 | 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */ | |
1015 | 0xeb, 0x10, 0x60, 0x00, 0x00, 0x30, /* csg %r1, %r0, 0(%r6) */ | |
1016 | 0xa7, 0x74, 0xff, 0xfb, /* jne .Lloop */ | |
1017 | /* Address of the register save block to %r3. */ | |
1018 | 0xb9, 0x04, 0x00, 0x3f, /* lgr %r3, %r15 */ | |
1019 | /* Make a stack frame, so that we can call the collector. */ | |
1020 | 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */ | |
1021 | /* Call it. */ | |
1022 | 0x0d, 0xe4, /* basr %r14, %r4 */ | |
1023 | /* And get rid of the stack frame again. */ | |
1024 | 0x41, 0xf0, 0xf0, 0xa0, /* la %r15, 0xa0(%r15) */ | |
1025 | /* Leave the lock. */ | |
1026 | 0x07, 0xf0, /* br %r0 */ | |
1027 | 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */ | |
1028 | 0xe3, 0x10, 0x60, 0x00, 0x00, 0x24, /* stg %t1, 0(%r6) */ | |
1029 | }; | |
1030 | ||
1031 | /* Code sequence restoring FRs, for targets with no VX support. */ | |
1032 | ||
1033 | static const unsigned char s390_ft_exit_fr[] = { | |
1034 | 0x68, 0x00, 0xf0, 0x00, /* ld %f0, 0x000(%r15) */ | |
1035 | 0x68, 0x10, 0xf0, 0x10, /* ld %f1, 0x010(%r15) */ | |
1036 | 0x68, 0x20, 0xf0, 0x20, /* ld %f2, 0x020(%r15) */ | |
1037 | 0x68, 0x30, 0xf0, 0x30, /* ld %f3, 0x030(%r15) */ | |
1038 | 0x68, 0x40, 0xf0, 0x40, /* ld %f4, 0x040(%r15) */ | |
1039 | 0x68, 0x50, 0xf0, 0x50, /* ld %f5, 0x050(%r15) */ | |
1040 | 0x68, 0x60, 0xf0, 0x60, /* ld %f6, 0x060(%r15) */ | |
1041 | 0x68, 0x70, 0xf0, 0x70, /* ld %f7, 0x070(%r15) */ | |
1042 | 0x68, 0x80, 0xf0, 0x80, /* ld %f8, 0x080(%r15) */ | |
1043 | 0x68, 0x90, 0xf0, 0x90, /* ld %f9, 0x090(%r15) */ | |
1044 | 0x68, 0xa0, 0xf0, 0xa0, /* ld %f10, 0x0a0(%r15) */ | |
1045 | 0x68, 0xb0, 0xf0, 0xb0, /* ld %f11, 0x0b0(%r15) */ | |
1046 | 0x68, 0xc0, 0xf0, 0xc0, /* ld %f12, 0x0c0(%r15) */ | |
1047 | 0x68, 0xd0, 0xf0, 0xd0, /* ld %f13, 0x0d0(%r15) */ | |
1048 | 0x68, 0xe0, 0xf0, 0xe0, /* ld %f14, 0x0e0(%r15) */ | |
1049 | 0x68, 0xf0, 0xf0, 0xf0, /* ld %f15, 0x0f0(%r15) */ | |
1050 | }; | |
1051 | ||
1052 | /* Code sequence restoring VRs. */ | |
1053 | ||
1054 | static const unsigned char s390_ft_exit_vr[] = { | |
1055 | 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x36, /* vlm %v0, %v15, 0x000(%r15) */ | |
1056 | 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x36, /* vlm %v16, %v31, 0x100(%r15) */ | |
1057 | }; | |
1058 | ||
1059 | /* Code sequence restoring misc registers. As for PSWM, only CC should be | |
1060 | modified by C code, so we use the alr instruction to restore it by | |
1061 | manufacturing an operand that'll result in the original flags. */ | |
1062 | ||
1063 | static const unsigned char s390_ft_exit_misc[] = { | |
1064 | 0xb2, 0x9d, 0xf2, 0xd0, /* lfpc 0x2d0(%r15) */ | |
1065 | 0x58, 0x00, 0xf2, 0xc0, /* l %r0, 0x2c0(%r15) */ | |
1066 | /* Extract CC to high 2 bits of %r0. */ | |
1067 | 0x88, 0x00, 0x00, 0x0c, /* srl %r0, 12 */ | |
1068 | 0x89, 0x00, 0x00, 0x1e, /* sll %r0, 30 */ | |
1069 | /* Add %r0 to itself. Result will be nonzero iff CC bit 0 is set, and | |
1070 | will have carry iff CC bit 1 is set - resulting in the same flags | |
1071 | as the original. */ | |
1072 | 0x1e, 0x00, /* alr %r0, %r0 */ | |
1073 | 0x9a, 0x0f, 0xf2, 0x80, /* lam %a0, %a15, 0x280(%r15) */ | |
1074 | }; | |
1075 | ||
1076 | /* Code sequence restoring GPRs, for 31-bit targets with no high GPRs. */ | |
1077 | ||
1078 | static const unsigned char s390_ft_exit_gpr_esa[] = { | |
1079 | 0x58, 0x00, 0xf2, 0x04, /* l %r0, 0x204(%r15) */ | |
1080 | 0x58, 0x10, 0xf2, 0x0c, /* l %r1, 0x20c(%r15) */ | |
1081 | 0x58, 0x20, 0xf2, 0x14, /* l %r2, 0x214(%r15) */ | |
1082 | 0x58, 0x30, 0xf2, 0x1c, /* l %r3, 0x21c(%r15) */ | |
1083 | 0x58, 0x40, 0xf2, 0x24, /* l %r4, 0x224(%r15) */ | |
1084 | 0x58, 0x50, 0xf2, 0x2c, /* l %r5, 0x22c(%r15) */ | |
1085 | 0x58, 0x60, 0xf2, 0x34, /* l %r6, 0x234(%r15) */ | |
1086 | 0x58, 0x70, 0xf2, 0x3c, /* l %r7, 0x23c(%r15) */ | |
1087 | 0x58, 0x80, 0xf2, 0x44, /* l %r8, 0x244(%r15) */ | |
1088 | 0x58, 0x90, 0xf2, 0x4c, /* l %r9, 0x24c(%r15) */ | |
1089 | 0x58, 0xa0, 0xf2, 0x54, /* l %r10, 0x254(%r15) */ | |
1090 | 0x58, 0xb0, 0xf2, 0x5c, /* l %r11, 0x25c(%r15) */ | |
1091 | 0x58, 0xc0, 0xf2, 0x64, /* l %r12, 0x264(%r15) */ | |
1092 | 0x58, 0xd0, 0xf2, 0x6c, /* l %r13, 0x26c(%r15) */ | |
1093 | 0x58, 0xe0, 0xf2, 0x74, /* l %r14, 0x274(%r15) */ | |
1094 | 0x58, 0xf0, 0xf2, 0x7c, /* l %r15, 0x27c(%r15) */ | |
1095 | }; | |
1096 | ||
1097 | /* Code sequence restoring GPRs, for 64-bit targets and 31-bit targets | |
1098 | with high GPRs. */ | |
1099 | ||
1100 | static const unsigned char s390_ft_exit_gpr_zarch[] = { | |
1101 | 0xeb, 0x0f, 0xf2, 0x00, 0x00, 0x04, /* lmg %r0, %r15, 0x200(%r15) */ | |
1102 | }; | |
1103 | ||
1104 | /* Writes instructions to target, updating the to pointer. */ | |
1105 | ||
1106 | static void | |
1107 | append_insns (CORE_ADDR *to, size_t len, const unsigned char *buf) | |
1108 | { | |
4196ab2a | 1109 | target_write_memory (*to, buf, len); |
abd9baf9 MK |
1110 | *to += len; |
1111 | } | |
1112 | ||
1113 | /* Relocates an instruction from oldloc to *to, updating to. */ | |
1114 | ||
1115 | static int | |
1116 | s390_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc, int is_64) | |
1117 | { | |
1118 | gdb_byte buf[6]; | |
1119 | int ilen; | |
1120 | int op2; | |
1121 | /* 0: no fixup, 1: PC16DBL fixup, 2: PC32DBL fixup. */ | |
1122 | int mode = 0; | |
1123 | int is_bras = 0; | |
1124 | read_inferior_memory (oldloc, buf, sizeof buf); | |
1125 | if (buf[0] < 0x40) | |
1126 | ilen = 2; | |
1127 | else if (buf[0] < 0xc0) | |
1128 | ilen = 4; | |
1129 | else | |
1130 | ilen = 6; | |
1131 | switch (buf[0]) | |
1132 | { | |
1133 | case 0x05: /* BALR */ | |
1134 | case 0x0c: /* BASSM */ | |
1135 | case 0x0d: /* BASR */ | |
1136 | case 0x45: /* BAL */ | |
1137 | case 0x4d: /* BAS */ | |
1138 | /* These save a return address and mess around with registers. | |
1139 | We can't relocate them. */ | |
1140 | return 1; | |
1141 | case 0x84: /* BRXH */ | |
1142 | case 0x85: /* BRXLE */ | |
1143 | mode = 1; | |
1144 | break; | |
1145 | case 0xa7: | |
1146 | op2 = buf[1] & 0xf; | |
1147 | /* BRC, BRAS, BRCT, BRCTG */ | |
1148 | if (op2 >= 4 && op2 <= 7) | |
1149 | mode = 1; | |
1150 | /* BRAS */ | |
1151 | if (op2 == 5) | |
1152 | is_bras = 1; | |
1153 | break; | |
1154 | case 0xc0: | |
1155 | op2 = buf[1] & 0xf; | |
1156 | /* LARL, BRCL, BRASL */ | |
1157 | if (op2 == 0 || op2 == 4 || op2 == 5) | |
1158 | mode = 2; | |
1159 | /* BRASL */ | |
1160 | if (op2 == 5) | |
1161 | is_bras = 1; | |
1162 | break; | |
1163 | case 0xc4: | |
1164 | case 0xc6: | |
1165 | /* PC-relative addressing instructions. */ | |
1166 | mode = 2; | |
1167 | break; | |
1168 | case 0xc5: /* BPRP */ | |
1169 | case 0xc7: /* BPP */ | |
1170 | /* Branch prediction - just skip it. */ | |
1171 | return 0; | |
1172 | case 0xcc: | |
1173 | op2 = buf[1] & 0xf; | |
1174 | /* BRCTH */ | |
1175 | if (op2 == 6) | |
1176 | mode = 2; | |
1177 | break; | |
1178 | case 0xec: | |
1179 | op2 = buf[5]; | |
1180 | switch (op2) | |
1181 | { | |
1182 | case 0x44: /* BRXHG */ | |
1183 | case 0x45: /* BRXLG */ | |
1184 | case 0x64: /* CGRJ */ | |
1185 | case 0x65: /* CLGRJ */ | |
1186 | case 0x76: /* CRJ */ | |
1187 | case 0x77: /* CLRJ */ | |
1188 | mode = 1; | |
1189 | break; | |
1190 | } | |
1191 | break; | |
1192 | } | |
1193 | ||
1194 | if (mode != 0) | |
1195 | { | |
1196 | /* We'll have to relocate an instruction with a PC-relative field. | |
1197 | First, compute the target. */ | |
1198 | int64_t loffset = 0; | |
1199 | CORE_ADDR target; | |
1200 | if (mode == 1) | |
1201 | { | |
1202 | int16_t soffset = 0; | |
1203 | memcpy (&soffset, buf + 2, 2); | |
1204 | loffset = soffset; | |
1205 | } | |
1206 | else if (mode == 2) | |
1207 | { | |
1208 | int32_t soffset = 0; | |
1209 | memcpy (&soffset, buf + 2, 4); | |
1210 | loffset = soffset; | |
1211 | } | |
1212 | target = oldloc + loffset * 2; | |
1213 | if (!is_64) | |
1214 | target &= 0x7fffffff; | |
1215 | ||
1216 | if (is_bras) | |
1217 | { | |
1218 | /* BRAS or BRASL was used. We cannot just relocate those, since | |
1219 | they save the return address in a register. We can, however, | |
1220 | replace them with a LARL+JG sequence. */ | |
1221 | ||
1222 | /* Make the LARL. */ | |
1223 | int32_t soffset; | |
1224 | buf[0] = 0xc0; | |
1225 | buf[1] &= 0xf0; | |
1226 | loffset = oldloc + ilen - *to; | |
1227 | loffset >>= 1; | |
1228 | soffset = loffset; | |
1229 | if (soffset != loffset && is_64) | |
1230 | return 1; | |
1231 | memcpy (buf + 2, &soffset, 4); | |
1232 | append_insns (to, 6, buf); | |
1233 | ||
1234 | /* Note: this is not fully correct. In 31-bit mode, LARL will write | |
1235 | an address with the top bit 0, while BRAS/BRASL will write it | |
1236 | with top bit 1. It should not matter much, since linux compilers | |
1237 | use BR and not BSM to return from functions, but it could confuse | |
1238 | some poor stack unwinder. */ | |
1239 | ||
1240 | /* We'll now be writing a JG. */ | |
1241 | mode = 2; | |
1242 | buf[0] = 0xc0; | |
1243 | buf[1] = 0xf4; | |
1244 | ilen = 6; | |
1245 | } | |
1246 | ||
1247 | /* Compute the new offset and write it to the buffer. */ | |
1248 | loffset = target - *to; | |
1249 | loffset >>= 1; | |
1250 | ||
1251 | if (mode == 1) | |
1252 | { | |
1253 | int16_t soffset = loffset; | |
1254 | if (soffset != loffset) | |
1255 | return 1; | |
1256 | memcpy (buf + 2, &soffset, 2); | |
1257 | } | |
1258 | else if (mode == 2) | |
1259 | { | |
1260 | int32_t soffset = loffset; | |
1261 | if (soffset != loffset && is_64) | |
1262 | return 1; | |
1263 | memcpy (buf + 2, &soffset, 4); | |
1264 | } | |
1265 | } | |
1266 | append_insns (to, ilen, buf); | |
1267 | return 0; | |
1268 | } | |
1269 | ||
809a0c35 TBA |
1270 | bool |
1271 | s390_target::supports_fast_tracepoints () | |
1272 | { | |
1273 | return true; | |
1274 | } | |
1275 | ||
1276 | /* Implementation of target ops method | |
abd9baf9 MK |
1277 | "install_fast_tracepoint_jump_pad". */ |
1278 | ||
809a0c35 TBA |
1279 | int |
1280 | s390_target::install_fast_tracepoint_jump_pad | |
1281 | (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector, | |
1282 | CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry, | |
1283 | CORE_ADDR *trampoline, ULONGEST *trampoline_size, | |
1284 | unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size, | |
1285 | CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end, | |
1286 | char *err) | |
abd9baf9 MK |
1287 | { |
1288 | int i; | |
1289 | int64_t loffset; | |
1290 | int32_t offset; | |
1291 | unsigned char jbuf[6] = { 0xc0, 0xf4, 0, 0, 0, 0 }; /* jg ... */ | |
1292 | CORE_ADDR buildaddr = *jump_entry; | |
1293 | #ifdef __s390x__ | |
1294 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
1295 | int is_64 = register_size (regcache->tdesc, 0) == 8; | |
1296 | int is_zarch = is_64 || have_hwcap_s390_high_gprs; | |
1297 | int has_vx = have_hwcap_s390_vx; | |
1298 | #else | |
1299 | int is_64 = 0, is_zarch = 0, has_vx = 0; | |
1300 | #endif | |
1301 | CORE_ADDR literals[4] = { | |
1302 | tpaddr, | |
1303 | tpoint, | |
1304 | collector, | |
1305 | lockaddr, | |
1306 | }; | |
1307 | ||
1308 | /* First, store the GPRs. */ | |
1309 | if (is_zarch) | |
1310 | append_insns (&buildaddr, sizeof s390_ft_entry_gpr_zarch, | |
1311 | s390_ft_entry_gpr_zarch); | |
1312 | else | |
1313 | append_insns (&buildaddr, sizeof s390_ft_entry_gpr_esa, | |
1314 | s390_ft_entry_gpr_esa); | |
1315 | ||
1316 | /* Second, misc registers (ARs, PSWM, FPC). PSWA will be stored below. */ | |
1317 | append_insns (&buildaddr, sizeof s390_ft_entry_misc, s390_ft_entry_misc); | |
1318 | ||
1319 | /* Third, FRs or VRs. */ | |
1320 | if (has_vx) | |
1321 | append_insns (&buildaddr, sizeof s390_ft_entry_vr, s390_ft_entry_vr); | |
1322 | else | |
1323 | append_insns (&buildaddr, sizeof s390_ft_entry_fr, s390_ft_entry_fr); | |
1324 | ||
1325 | /* Now, the main part of code - store PSWA, take lock, call collector, | |
1326 | leave lock. First, we'll need to fetch 4 literals. */ | |
1327 | if (is_64) { | |
1328 | unsigned char buf[] = { | |
1329 | 0x07, 0x07, /* nopr %r7 */ | |
1330 | 0x07, 0x07, /* nopr %r7 */ | |
1331 | 0x07, 0x07, /* nopr %r7 */ | |
1332 | 0xa7, 0x15, 0x00, 0x12, /* bras %r1, .Lend */ | |
1333 | 0, 0, 0, 0, 0, 0, 0, 0, /* tpaddr */ | |
1334 | 0, 0, 0, 0, 0, 0, 0, 0, /* tpoint */ | |
1335 | 0, 0, 0, 0, 0, 0, 0, 0, /* collector */ | |
1336 | 0, 0, 0, 0, 0, 0, 0, 0, /* lockaddr */ | |
1337 | /* .Lend: */ | |
1338 | }; | |
1339 | /* Find the proper start place in buf, so that literals will be | |
1340 | aligned. */ | |
1341 | int bufpos = (buildaddr + 2) & 7; | |
1342 | /* Stuff the literals into the buffer. */ | |
1343 | for (i = 0; i < 4; i++) { | |
1344 | uint64_t lit = literals[i]; | |
1345 | memcpy (&buf[sizeof buf - 32 + i * 8], &lit, 8); | |
1346 | } | |
1347 | append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos); | |
1348 | append_insns (&buildaddr, sizeof s390_ft_main_64, s390_ft_main_64); | |
1349 | } else { | |
1350 | unsigned char buf[] = { | |
1351 | 0x07, 0x07, /* nopr %r7 */ | |
1352 | 0xa7, 0x15, 0x00, 0x0a, /* bras %r1, .Lend */ | |
1353 | 0, 0, 0, 0, /* tpaddr */ | |
1354 | 0, 0, 0, 0, /* tpoint */ | |
1355 | 0, 0, 0, 0, /* collector */ | |
1356 | 0, 0, 0, 0, /* lockaddr */ | |
1357 | /* .Lend: */ | |
1358 | }; | |
1359 | /* Find the proper start place in buf, so that literals will be | |
1360 | aligned. */ | |
1361 | int bufpos = (buildaddr + 2) & 3; | |
1362 | /* First literal will be saved as the PSWA, make sure it has the high bit | |
1363 | set. */ | |
1364 | literals[0] |= 0x80000000; | |
1365 | /* Stuff the literals into the buffer. */ | |
1366 | for (i = 0; i < 4; i++) { | |
1367 | uint32_t lit = literals[i]; | |
1368 | memcpy (&buf[sizeof buf - 16 + i * 4], &lit, 4); | |
1369 | } | |
1370 | append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos); | |
1371 | append_insns (&buildaddr, sizeof s390_ft_main_31, s390_ft_main_31); | |
1372 | } | |
1373 | ||
1374 | /* Restore FRs or VRs. */ | |
1375 | if (has_vx) | |
1376 | append_insns (&buildaddr, sizeof s390_ft_exit_vr, s390_ft_exit_vr); | |
1377 | else | |
1378 | append_insns (&buildaddr, sizeof s390_ft_exit_fr, s390_ft_exit_fr); | |
1379 | ||
1380 | /* Restore misc registers. */ | |
1381 | append_insns (&buildaddr, sizeof s390_ft_exit_misc, s390_ft_exit_misc); | |
1382 | ||
1383 | /* Restore the GPRs. */ | |
1384 | if (is_zarch) | |
1385 | append_insns (&buildaddr, sizeof s390_ft_exit_gpr_zarch, | |
1386 | s390_ft_exit_gpr_zarch); | |
1387 | else | |
1388 | append_insns (&buildaddr, sizeof s390_ft_exit_gpr_esa, | |
1389 | s390_ft_exit_gpr_esa); | |
1390 | ||
1391 | /* Now, adjust the original instruction to execute in the jump | |
1392 | pad. */ | |
1393 | *adjusted_insn_addr = buildaddr; | |
1394 | if (s390_relocate_instruction (&buildaddr, tpaddr, is_64)) | |
1395 | { | |
1396 | sprintf (err, "E.Could not relocate instruction for tracepoint."); | |
1397 | return 1; | |
1398 | } | |
1399 | *adjusted_insn_addr_end = buildaddr; | |
1400 | ||
1401 | /* Finally, write a jump back to the program. */ | |
1402 | ||
1403 | loffset = (tpaddr + orig_size) - buildaddr; | |
1404 | loffset >>= 1; | |
1405 | offset = loffset; | |
1406 | if (is_64 && offset != loffset) | |
1407 | { | |
1408 | sprintf (err, | |
1409 | "E.Jump back from jump pad too far from tracepoint " | |
1410 | "(offset 0x%" PRIx64 " > int33).", loffset); | |
1411 | return 1; | |
1412 | } | |
1413 | memcpy (jbuf + 2, &offset, 4); | |
1414 | append_insns (&buildaddr, sizeof jbuf, jbuf); | |
1415 | ||
1416 | /* The jump pad is now built. Wire in a jump to our jump pad. This | |
1417 | is always done last (by our caller actually), so that we can | |
1418 | install fast tracepoints with threads running. This relies on | |
1419 | the agent's atomic write support. */ | |
1420 | loffset = *jump_entry - tpaddr; | |
1421 | loffset >>= 1; | |
1422 | offset = loffset; | |
1423 | if (is_64 && offset != loffset) | |
1424 | { | |
1425 | sprintf (err, | |
1426 | "E.Jump back from jump pad too far from tracepoint " | |
1427 | "(offset 0x%" PRIx64 " > int33).", loffset); | |
1428 | return 1; | |
1429 | } | |
1430 | memcpy (jbuf + 2, &offset, 4); | |
1431 | memcpy (jjump_pad_insn, jbuf, sizeof jbuf); | |
1432 | *jjump_pad_insn_size = sizeof jbuf; | |
1433 | ||
1434 | /* Return the end address of our pad. */ | |
1435 | *jump_entry = buildaddr; | |
1436 | ||
1437 | return 0; | |
1438 | } | |
1439 | ||
809a0c35 | 1440 | /* Implementation of target ops method |
abd9baf9 MK |
1441 | "get_min_fast_tracepoint_insn_len". */ |
1442 | ||
809a0c35 TBA |
1443 | int |
1444 | s390_target::get_min_fast_tracepoint_insn_len () | |
abd9baf9 MK |
1445 | { |
1446 | /* We only support using 6-byte jumps to reach the tracepoint code. | |
1447 | If the tracepoint buffer were allocated sufficiently close (64kiB) | |
1448 | to the executable code, and the traced instruction itself was close | |
1449 | enough to the beginning, we could use 4-byte jumps, but this doesn't | |
1450 | seem to be worth the effort. */ | |
1451 | return 6; | |
1452 | } | |
1453 | ||
1454 | /* Implementation of linux_target_ops method "get_ipa_tdesc_idx". */ | |
1455 | ||
1456 | static int | |
1457 | s390_get_ipa_tdesc_idx (void) | |
1458 | { | |
1459 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
1460 | const struct target_desc *tdesc = regcache->tdesc; | |
1461 | ||
1462 | #ifdef __s390x__ | |
1463 | if (tdesc == tdesc_s390x_linux64) | |
1464 | return S390_TDESC_64; | |
1465 | if (tdesc == tdesc_s390x_linux64v1) | |
1466 | return S390_TDESC_64V1; | |
1467 | if (tdesc == tdesc_s390x_linux64v2) | |
1468 | return S390_TDESC_64V2; | |
1469 | if (tdesc == tdesc_s390x_te_linux64) | |
1470 | return S390_TDESC_TE; | |
1471 | if (tdesc == tdesc_s390x_vx_linux64) | |
1472 | return S390_TDESC_VX; | |
1473 | if (tdesc == tdesc_s390x_tevx_linux64) | |
1474 | return S390_TDESC_TEVX; | |
ce29f843 AA |
1475 | if (tdesc == tdesc_s390x_gs_linux64) |
1476 | return S390_TDESC_GS; | |
abd9baf9 MK |
1477 | #endif |
1478 | ||
1479 | if (tdesc == tdesc_s390_linux32) | |
1480 | return S390_TDESC_32; | |
1481 | if (tdesc == tdesc_s390_linux32v1) | |
1482 | return S390_TDESC_32V1; | |
1483 | if (tdesc == tdesc_s390_linux32v2) | |
1484 | return S390_TDESC_32V2; | |
1485 | if (tdesc == tdesc_s390_linux64) | |
1486 | return S390_TDESC_64; | |
1487 | if (tdesc == tdesc_s390_linux64v1) | |
1488 | return S390_TDESC_64V1; | |
1489 | if (tdesc == tdesc_s390_linux64v2) | |
1490 | return S390_TDESC_64V2; | |
1491 | if (tdesc == tdesc_s390_te_linux64) | |
1492 | return S390_TDESC_TE; | |
1493 | if (tdesc == tdesc_s390_vx_linux64) | |
1494 | return S390_TDESC_VX; | |
1495 | if (tdesc == tdesc_s390_tevx_linux64) | |
1496 | return S390_TDESC_TEVX; | |
ce29f843 AA |
1497 | if (tdesc == tdesc_s390_gs_linux64) |
1498 | return S390_TDESC_GS; | |
abd9baf9 MK |
1499 | |
1500 | return 0; | |
1501 | } | |
1502 | ||
f39e8743 MK |
1503 | /* Appends given buffer to current_insn_ptr in the target. */ |
1504 | ||
1505 | static void | |
1506 | add_insns (const unsigned char *start, int len) | |
1507 | { | |
1508 | CORE_ADDR buildaddr = current_insn_ptr; | |
1509 | ||
1510 | if (debug_threads) | |
1511 | debug_printf ("Adding %d bytes of insn at %s\n", | |
1512 | len, paddress (buildaddr)); | |
1513 | ||
1514 | append_insns (&buildaddr, len, start); | |
1515 | current_insn_ptr = buildaddr; | |
1516 | } | |
1517 | ||
1518 | /* Register usage in emit: | |
1519 | ||
1520 | - %r0, %r1: temp | |
1521 | - %r2: top of stack (high word for 31-bit) | |
1522 | - %r3: low word of top of stack (for 31-bit) | |
1523 | - %r4, %r5: temp | |
1524 | - %r6, %r7, %r8: don't use | |
1525 | - %r9: saved arg1 | |
1526 | - %r10: saved arg2 | |
1527 | - %r11: frame pointer | |
1528 | - %r12: saved top of stack for void_call_2 (high word for 31-bit) | |
1529 | - %r13: low word of saved top of stack (for 31-bit) | |
1530 | - %r14: return address for calls | |
1531 | - %r15: stack pointer | |
1532 | ||
1533 | */ | |
1534 | ||
1535 | /* The "emit_prologue" emit_ops method for s390. */ | |
1536 | ||
1537 | static void | |
1538 | s390_emit_prologue (void) | |
1539 | { | |
1540 | static const unsigned char buf[] = { | |
1541 | 0x90, 0x9f, 0xf0, 0x24, /* stm %r9, %r15, 0x24(%r15) */ | |
1542 | 0x18, 0x92, /* lr %r9, %r2 */ | |
1543 | 0x18, 0xa3, /* lr %r10, %r3 */ | |
1544 | 0x18, 0xbf, /* lr %r11, %r15 */ | |
1545 | }; | |
1546 | add_insns (buf, sizeof buf); | |
1547 | } | |
1548 | ||
1549 | /* The "emit_epilogue" emit_ops method for s390. */ | |
1550 | ||
1551 | static void | |
1552 | s390_emit_epilogue (void) | |
1553 | { | |
1554 | static const unsigned char buf[] = { | |
1555 | 0x90, 0x23, 0xa0, 0x00, /* stm %r2, %r3, 0(%r10) */ | |
1556 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1557 | 0x98, 0x9f, 0xb0, 0x24, /* lm %r9, %r15, 0x24(%r11) */ | |
1558 | 0x07, 0xfe, /* br %r14 */ | |
1559 | }; | |
1560 | add_insns (buf, sizeof buf); | |
1561 | } | |
1562 | ||
1563 | /* The "emit_add" emit_ops method for s390. */ | |
1564 | ||
1565 | static void | |
1566 | s390_emit_add (void) | |
1567 | { | |
1568 | static const unsigned char buf[] = { | |
1569 | 0x5e, 0x30, 0xf0, 0x04, /* al %r3, 4(%r15) */ | |
1570 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x98, /* al %r2, 0(%r15) */ | |
1571 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1572 | }; | |
1573 | add_insns (buf, sizeof buf); | |
1574 | } | |
1575 | ||
1576 | /* The "emit_sub" emit_ops method for s390. */ | |
1577 | ||
1578 | static void | |
1579 | s390_emit_sub (void) | |
1580 | { | |
1581 | static const unsigned char buf[] = { | |
1582 | 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */ | |
1583 | 0x1f, 0x53, /* slr %r5, %r3 */ | |
1584 | 0xb9, 0x99, 0x00, 0x42, /* slbr %r4, %r2 */ | |
1585 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1586 | 0x18, 0x35, /* lr %r3, %r5 */ | |
1587 | 0x18, 0x24, /* lr %r2, %r4 */ | |
1588 | }; | |
1589 | add_insns (buf, sizeof buf); | |
1590 | } | |
1591 | ||
1592 | /* The "emit_mul" emit_ops method for s390. */ | |
1593 | ||
1594 | static void | |
1595 | s390_emit_mul (void) | |
1596 | { | |
1597 | emit_error = 1; | |
1598 | } | |
1599 | ||
1600 | /* The "emit_lsh" emit_ops method for s390. */ | |
1601 | ||
1602 | static void | |
1603 | s390_emit_lsh (void) | |
1604 | { | |
1605 | static const unsigned char buf[] = { | |
1606 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1607 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1608 | 0x8d, 0x20, 0x40, 0x00, /* sldl %r2, 0(%r4) */ | |
1609 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1610 | }; | |
1611 | add_insns (buf, sizeof buf); | |
1612 | } | |
1613 | ||
1614 | /* The "emit_rsh_signed" emit_ops method for s390. */ | |
1615 | ||
1616 | static void | |
1617 | s390_emit_rsh_signed (void) | |
1618 | { | |
1619 | static const unsigned char buf[] = { | |
1620 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1621 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1622 | 0x8e, 0x20, 0x40, 0x00, /* srda %r2, 0(%r4) */ | |
1623 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1624 | }; | |
1625 | add_insns (buf, sizeof buf); | |
1626 | } | |
1627 | ||
1628 | /* The "emit_rsh_unsigned" emit_ops method for s390. */ | |
1629 | ||
1630 | static void | |
1631 | s390_emit_rsh_unsigned (void) | |
1632 | { | |
1633 | static const unsigned char buf[] = { | |
1634 | 0x18, 0x43, /* lr %r4, %r3 */ | |
1635 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1636 | 0x8c, 0x20, 0x40, 0x00, /* srdl %r2, 0(%r4) */ | |
1637 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1638 | }; | |
1639 | add_insns (buf, sizeof buf); | |
1640 | } | |
1641 | ||
1642 | /* The "emit_ext" emit_ops method for s390. */ | |
1643 | ||
1644 | static void | |
1645 | s390_emit_ext (int arg) | |
1646 | { | |
1647 | unsigned char buf[] = { | |
b4f183d2 TT |
1648 | 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */ |
1649 | 0x8e, 0x20, 0x00, (unsigned char) (64 - arg), /* srda %r2, <64-arg> */ | |
f39e8743 MK |
1650 | }; |
1651 | add_insns (buf, sizeof buf); | |
1652 | } | |
1653 | ||
1654 | /* The "emit_log_not" emit_ops method for s390. */ | |
1655 | ||
1656 | static void | |
1657 | s390_emit_log_not (void) | |
1658 | { | |
1659 | static const unsigned char buf[] = { | |
1660 | 0x16, 0x23, /* or %r2, %r3 */ | |
1661 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1662 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1663 | 0xa7, 0x74, 0x00, 0x04, /* jne .Lskip */ | |
1664 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1665 | /* .Lskip: */ | |
1666 | }; | |
1667 | add_insns (buf, sizeof buf); | |
1668 | } | |
1669 | ||
1670 | /* The "emit_bit_and" emit_ops method for s390. */ | |
1671 | ||
1672 | static void | |
1673 | s390_emit_bit_and (void) | |
1674 | { | |
1675 | static const unsigned char buf[] = { | |
1676 | 0x54, 0x20, 0xf0, 0x00, /* n %r2, 0(%r15) */ | |
1677 | 0x54, 0x30, 0xf0, 0x04, /* n %r3, 4(%r15) */ | |
1678 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1679 | }; | |
1680 | add_insns (buf, sizeof buf); | |
1681 | } | |
1682 | ||
1683 | /* The "emit_bit_or" emit_ops method for s390. */ | |
1684 | ||
1685 | static void | |
1686 | s390_emit_bit_or (void) | |
1687 | { | |
1688 | static const unsigned char buf[] = { | |
1689 | 0x56, 0x20, 0xf0, 0x00, /* o %r2, 0(%r15) */ | |
1690 | 0x56, 0x30, 0xf0, 0x04, /* o %r3, 4(%r15) */ | |
1691 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1692 | }; | |
1693 | add_insns (buf, sizeof buf); | |
1694 | } | |
1695 | ||
1696 | /* The "emit_bit_xor" emit_ops method for s390. */ | |
1697 | ||
1698 | static void | |
1699 | s390_emit_bit_xor (void) | |
1700 | { | |
1701 | static const unsigned char buf[] = { | |
1702 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
1703 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
1704 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1705 | }; | |
1706 | add_insns (buf, sizeof buf); | |
1707 | } | |
1708 | ||
1709 | /* The "emit_bit_not" emit_ops method for s390. */ | |
1710 | ||
1711 | static void | |
1712 | s390_emit_bit_not (void) | |
1713 | { | |
1714 | static const unsigned char buf[] = { | |
1715 | 0xa7, 0x48, 0xff, 0xff, /* lhi %r4, -1 */ | |
1716 | 0x17, 0x24, /* xr %r2, %r4 */ | |
1717 | 0x17, 0x34, /* xr %r3, %r4 */ | |
1718 | }; | |
1719 | add_insns (buf, sizeof buf); | |
1720 | } | |
1721 | ||
1722 | /* The "emit_equal" emit_ops method for s390. */ | |
1723 | ||
1724 | static void | |
1725 | s390_emit_equal (void) | |
1726 | { | |
1727 | s390_emit_bit_xor (); | |
1728 | s390_emit_log_not (); | |
1729 | } | |
1730 | ||
1731 | /* The "emit_less_signed" emit_ops method for s390. */ | |
1732 | ||
1733 | static void | |
1734 | s390_emit_less_signed (void) | |
1735 | { | |
1736 | static const unsigned char buf[] = { | |
1737 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
1738 | 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */ | |
1739 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */ | |
1740 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
1741 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */ | |
1742 | /* .Lhigh: */ | |
1743 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1744 | 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */ | |
1745 | /* .Lless: */ | |
1746 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1747 | /* .Lend: */ | |
1748 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1749 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1750 | }; | |
1751 | add_insns (buf, sizeof buf); | |
1752 | } | |
1753 | ||
1754 | /* The "emit_less_unsigned" emit_ops method for s390. */ | |
1755 | ||
1756 | static void | |
1757 | s390_emit_less_unsigned (void) | |
1758 | { | |
1759 | static const unsigned char buf[] = { | |
1760 | 0x55, 0x20, 0xf0, 0x00, /* cl %r2, 0(%r15) */ | |
1761 | 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */ | |
1762 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */ | |
1763 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
1764 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */ | |
1765 | /* .Lhigh: */ | |
1766 | 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */ | |
1767 | 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */ | |
1768 | /* .Lless: */ | |
1769 | 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */ | |
1770 | /* .Lend: */ | |
1771 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1772 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1773 | }; | |
1774 | add_insns (buf, sizeof buf); | |
1775 | } | |
1776 | ||
1777 | /* The "emit_ref" emit_ops method for s390. */ | |
1778 | ||
1779 | static void | |
1780 | s390_emit_ref (int size) | |
1781 | { | |
1782 | static const unsigned char buf1[] = { | |
1783 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1784 | 0x43, 0x30, 0x30, 0x00, /* ic %r3, 0(%r3) */ | |
1785 | }; | |
1786 | static const unsigned char buf2[] = { | |
1787 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1788 | 0x48, 0x30, 0x30, 0x00, /* lh %r3, 0(%r3) */ | |
1789 | }; | |
1790 | static const unsigned char buf4[] = { | |
1791 | 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */ | |
1792 | 0x58, 0x30, 0x30, 0x00, /* l %r3, 0(%r3) */ | |
1793 | }; | |
1794 | static const unsigned char buf8[] = { | |
1795 | 0x98, 0x23, 0x30, 0x00, /* lm %r2, %r3, 0(%r3) */ | |
1796 | }; | |
1797 | switch (size) | |
1798 | { | |
1799 | case 1: | |
1800 | add_insns (buf1, sizeof buf1); | |
1801 | break; | |
1802 | case 2: | |
1803 | add_insns (buf2, sizeof buf2); | |
1804 | break; | |
1805 | case 4: | |
1806 | add_insns (buf4, sizeof buf4); | |
1807 | break; | |
1808 | case 8: | |
1809 | add_insns (buf8, sizeof buf8); | |
1810 | break; | |
1811 | default: | |
1812 | emit_error = 1; | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | /* The "emit_if_goto" emit_ops method for s390. */ | |
1817 | ||
1818 | static void | |
1819 | s390_emit_if_goto (int *offset_p, int *size_p) | |
1820 | { | |
1821 | static const unsigned char buf[] = { | |
1822 | 0x16, 0x23, /* or %r2, %r3 */ | |
1823 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1824 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1825 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00 /* jgne <fillme> */ | |
1826 | }; | |
1827 | add_insns (buf, sizeof buf); | |
1828 | if (offset_p) | |
1829 | *offset_p = 12; | |
1830 | if (size_p) | |
1831 | *size_p = 4; | |
1832 | } | |
1833 | ||
1834 | /* The "emit_goto" emit_ops method for s390 and s390x. */ | |
1835 | ||
1836 | static void | |
1837 | s390_emit_goto (int *offset_p, int *size_p) | |
1838 | { | |
1839 | static const unsigned char buf[] = { | |
1840 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
1841 | }; | |
1842 | add_insns (buf, sizeof buf); | |
1843 | if (offset_p) | |
1844 | *offset_p = 2; | |
1845 | if (size_p) | |
1846 | *size_p = 4; | |
1847 | } | |
1848 | ||
1849 | /* The "write_goto_address" emit_ops method for s390 and s390x. */ | |
1850 | ||
1851 | static void | |
1852 | s390_write_goto_address (CORE_ADDR from, CORE_ADDR to, int size) | |
1853 | { | |
1854 | long diff = ((long) (to - (from - 2))) / 2; | |
1855 | int sdiff = diff; | |
1856 | unsigned char buf[sizeof sdiff]; | |
1857 | ||
1858 | /* We're only doing 4-byte sizes at the moment. */ | |
1859 | if (size != sizeof sdiff || sdiff != diff) | |
1860 | { | |
1861 | emit_error = 1; | |
1862 | return; | |
1863 | } | |
1864 | ||
1865 | memcpy (buf, &sdiff, sizeof sdiff); | |
4196ab2a | 1866 | target_write_memory (from, buf, sizeof sdiff); |
f39e8743 MK |
1867 | } |
1868 | ||
1869 | /* Preparation for emitting a literal pool of given size. Loads the address | |
1870 | of the pool into %r1, and jumps over it. Called should emit the pool data | |
1871 | immediately afterwards. Used for both s390 and s390x. */ | |
1872 | ||
1873 | static void | |
1874 | s390_emit_litpool (int size) | |
1875 | { | |
1876 | static const unsigned char nop[] = { | |
1877 | 0x07, 0x07, | |
1878 | }; | |
1879 | unsigned char buf[] = { | |
b4f183d2 TT |
1880 | 0xa7, 0x15, 0x00, |
1881 | (unsigned char) ((size + 4) / 2), /* bras %r1, .Lend+size */ | |
f39e8743 MK |
1882 | /* .Lend: */ |
1883 | }; | |
1884 | if (size == 4) | |
1885 | { | |
1886 | /* buf needs to start at even halfword for litpool to be aligned */ | |
1887 | if (current_insn_ptr & 2) | |
1888 | add_insns (nop, sizeof nop); | |
1889 | } | |
1890 | else | |
1891 | { | |
1892 | while ((current_insn_ptr & 6) != 4) | |
1893 | add_insns (nop, sizeof nop); | |
1894 | } | |
1895 | add_insns (buf, sizeof buf); | |
1896 | } | |
1897 | ||
1898 | /* The "emit_const" emit_ops method for s390. */ | |
1899 | ||
1900 | static void | |
1901 | s390_emit_const (LONGEST num) | |
1902 | { | |
1903 | unsigned long long n = num; | |
1904 | unsigned char buf_s[] = { | |
b4f183d2 TT |
1905 | /* lhi %r3, <num> */ |
1906 | 0xa7, 0x38, | |
1907 | (unsigned char) (num >> 8), (unsigned char) num, | |
1908 | /* xr %r2, %r2 */ | |
1909 | 0x17, 0x22, | |
f39e8743 MK |
1910 | }; |
1911 | static const unsigned char buf_l[] = { | |
1912 | 0x98, 0x23, 0x10, 0x00, /* lm %r2, %r3, 0(%r1) */ | |
1913 | }; | |
1914 | if (num < 0x8000 && num >= 0) | |
1915 | { | |
1916 | add_insns (buf_s, sizeof buf_s); | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | s390_emit_litpool (8); | |
1921 | add_insns ((unsigned char *) &n, sizeof n); | |
1922 | add_insns (buf_l, sizeof buf_l); | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | /* The "emit_call" emit_ops method for s390. */ | |
1927 | ||
1928 | static void | |
1929 | s390_emit_call (CORE_ADDR fn) | |
1930 | { | |
1931 | unsigned int n = fn; | |
1932 | static const unsigned char buf[] = { | |
1933 | 0x58, 0x10, 0x10, 0x00, /* l %r1, 0(%r1) */ | |
1934 | 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */ | |
1935 | 0x0d, 0xe1, /* basr %r14, %r1 */ | |
1936 | 0xa7, 0xfa, 0x00, 0x60, /* ahi %r15, 0x60 */ | |
1937 | }; | |
1938 | s390_emit_litpool (4); | |
1939 | add_insns ((unsigned char *) &n, sizeof n); | |
1940 | add_insns (buf, sizeof buf); | |
1941 | } | |
1942 | ||
1943 | /* The "emit_reg" emit_ops method for s390. */ | |
1944 | ||
1945 | static void | |
1946 | s390_emit_reg (int reg) | |
1947 | { | |
1948 | unsigned char bufpre[] = { | |
b4f183d2 TT |
1949 | /* lr %r2, %r9 */ |
1950 | 0x18, 0x29, | |
1951 | /* lhi %r3, <reg> */ | |
1952 | 0xa7, 0x38, (unsigned char) (reg >> 8), (unsigned char) reg, | |
f39e8743 MK |
1953 | }; |
1954 | add_insns (bufpre, sizeof bufpre); | |
1955 | s390_emit_call (get_raw_reg_func_addr ()); | |
1956 | } | |
1957 | ||
1958 | /* The "emit_pop" emit_ops method for s390. */ | |
1959 | ||
1960 | static void | |
1961 | s390_emit_pop (void) | |
1962 | { | |
1963 | static const unsigned char buf[] = { | |
1964 | 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */ | |
1965 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
1966 | }; | |
1967 | add_insns (buf, sizeof buf); | |
1968 | } | |
1969 | ||
1970 | /* The "emit_stack_flush" emit_ops method for s390. */ | |
1971 | ||
1972 | static void | |
1973 | s390_emit_stack_flush (void) | |
1974 | { | |
1975 | static const unsigned char buf[] = { | |
1976 | 0xa7, 0xfa, 0xff, 0xf8, /* ahi %r15, -8 */ | |
1977 | 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */ | |
1978 | }; | |
1979 | add_insns (buf, sizeof buf); | |
1980 | } | |
1981 | ||
1982 | /* The "emit_zero_ext" emit_ops method for s390. */ | |
1983 | ||
1984 | static void | |
1985 | s390_emit_zero_ext (int arg) | |
1986 | { | |
1987 | unsigned char buf[] = { | |
b4f183d2 TT |
1988 | 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */ |
1989 | 0x8c, 0x20, 0x00, (unsigned char) (64 - arg), /* srdl %r2, <64-arg> */ | |
f39e8743 MK |
1990 | }; |
1991 | add_insns (buf, sizeof buf); | |
1992 | } | |
1993 | ||
1994 | /* The "emit_swap" emit_ops method for s390. */ | |
1995 | ||
1996 | static void | |
1997 | s390_emit_swap (void) | |
1998 | { | |
1999 | static const unsigned char buf[] = { | |
2000 | 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */ | |
2001 | 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */ | |
2002 | 0x18, 0x24, /* lr %r2, %r4 */ | |
2003 | 0x18, 0x35, /* lr %r3, %r5 */ | |
2004 | }; | |
2005 | add_insns (buf, sizeof buf); | |
2006 | } | |
2007 | ||
2008 | /* The "emit_stack_adjust" emit_ops method for s390. */ | |
2009 | ||
2010 | static void | |
2011 | s390_emit_stack_adjust (int n) | |
2012 | { | |
2013 | unsigned char buf[] = { | |
b4f183d2 TT |
2014 | /* ahi %r15, 8*n */ |
2015 | 0xa7, 0xfa, | |
2016 | (unsigned char ) (n * 8 >> 8), (unsigned char) (n * 8), | |
f39e8743 MK |
2017 | }; |
2018 | add_insns (buf, sizeof buf); | |
2019 | } | |
2020 | ||
2021 | /* Sets %r2 to a 32-bit constant. */ | |
2022 | ||
2023 | static void | |
2024 | s390_emit_set_r2 (int arg1) | |
2025 | { | |
2026 | unsigned char buf_s[] = { | |
b4f183d2 TT |
2027 | /* lhi %r2, <arg1> */ |
2028 | 0xa7, 0x28, (unsigned char) (arg1 >> 8), (unsigned char) arg1, | |
f39e8743 MK |
2029 | }; |
2030 | static const unsigned char buf_l[] = { | |
2031 | 0x58, 0x20, 0x10, 0x00, /* l %r2, 0(%r1) */ | |
2032 | }; | |
2033 | if (arg1 < 0x8000 && arg1 >= -0x8000) | |
2034 | { | |
2035 | add_insns (buf_s, sizeof buf_s); | |
2036 | } | |
2037 | else | |
2038 | { | |
2039 | s390_emit_litpool (4); | |
2040 | add_insns ((unsigned char *) &arg1, sizeof arg1); | |
2041 | add_insns (buf_l, sizeof buf_l); | |
2042 | } | |
2043 | } | |
2044 | ||
2045 | /* The "emit_int_call_1" emit_ops method for s390. */ | |
2046 | ||
2047 | static void | |
2048 | s390_emit_int_call_1 (CORE_ADDR fn, int arg1) | |
2049 | { | |
2050 | /* FN's prototype is `LONGEST(*fn)(int)'. */ | |
2051 | s390_emit_set_r2 (arg1); | |
2052 | s390_emit_call (fn); | |
2053 | } | |
2054 | ||
2055 | /* The "emit_void_call_2" emit_ops method for s390. */ | |
2056 | ||
2057 | static void | |
2058 | s390_emit_void_call_2 (CORE_ADDR fn, int arg1) | |
2059 | { | |
2060 | /* FN's prototype is `void(*fn)(int,LONGEST)'. */ | |
2061 | static const unsigned char buf[] = { | |
2062 | 0x18, 0xc2, /* lr %r12, %r2 */ | |
2063 | 0x18, 0xd3, /* lr %r13, %r3 */ | |
2064 | 0x18, 0x43, /* lr %r4, %r3 */ | |
2065 | 0x18, 0x32, /* lr %r3, %r2 */ | |
2066 | }; | |
2067 | static const unsigned char buf2[] = { | |
2068 | 0x18, 0x2c, /* lr %r2, %r12 */ | |
2069 | 0x18, 0x3d, /* lr %r3, %r13 */ | |
2070 | }; | |
2071 | add_insns (buf, sizeof buf); | |
2072 | s390_emit_set_r2 (arg1); | |
2073 | s390_emit_call (fn); | |
2074 | add_insns (buf2, sizeof buf2); | |
2075 | } | |
2076 | ||
2077 | /* The "emit_eq_goto" emit_ops method for s390. */ | |
2078 | ||
782c1122 | 2079 | static void |
f39e8743 MK |
2080 | s390_emit_eq_goto (int *offset_p, int *size_p) |
2081 | { | |
2082 | static const unsigned char buf[] = { | |
2083 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
2084 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
2085 | 0x16, 0x23, /* or %r2, %r3 */ | |
2086 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2087 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2088 | 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */ | |
2089 | }; | |
2090 | add_insns (buf, sizeof buf); | |
2091 | if (offset_p) | |
2092 | *offset_p = 20; | |
2093 | if (size_p) | |
2094 | *size_p = 4; | |
2095 | } | |
2096 | ||
2097 | /* The "emit_ne_goto" emit_ops method for s390. */ | |
2098 | ||
782c1122 | 2099 | static void |
f39e8743 MK |
2100 | s390_emit_ne_goto (int *offset_p, int *size_p) |
2101 | { | |
2102 | static const unsigned char buf[] = { | |
2103 | 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */ | |
2104 | 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */ | |
2105 | 0x16, 0x23, /* or %r2, %r3 */ | |
2106 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2107 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2108 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2109 | }; | |
2110 | add_insns (buf, sizeof buf); | |
2111 | if (offset_p) | |
2112 | *offset_p = 20; | |
2113 | if (size_p) | |
2114 | *size_p = 4; | |
2115 | } | |
2116 | ||
2117 | /* The "emit_lt_goto" emit_ops method for s390. */ | |
2118 | ||
782c1122 | 2119 | static void |
f39e8743 MK |
2120 | s390_emit_lt_goto (int *offset_p, int *size_p) |
2121 | { | |
2122 | static const unsigned char buf[] = { | |
2123 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2124 | 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */ | |
2125 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */ | |
2126 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2127 | 0xa7, 0x24, 0x00, 0x08, /* jh .Ltrue */ | |
2128 | /* .Lfalse: */ | |
2129 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2130 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2131 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2132 | /* .Ltrue: */ | |
2133 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2134 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2135 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2136 | /* .Lend: */ | |
2137 | }; | |
2138 | add_insns (buf, sizeof buf); | |
2139 | if (offset_p) | |
2140 | *offset_p = 42; | |
2141 | if (size_p) | |
2142 | *size_p = 4; | |
2143 | } | |
2144 | ||
2145 | /* The "emit_le_goto" emit_ops method for s390. */ | |
2146 | ||
782c1122 | 2147 | static void |
f39e8743 MK |
2148 | s390_emit_le_goto (int *offset_p, int *size_p) |
2149 | { | |
2150 | static const unsigned char buf[] = { | |
2151 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2152 | 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */ | |
2153 | 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */ | |
2154 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2155 | 0xa7, 0xa4, 0x00, 0x08, /* jhe .Ltrue */ | |
2156 | /* .Lfalse: */ | |
2157 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2158 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2159 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2160 | /* .Ltrue: */ | |
2161 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2162 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2163 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2164 | /* .Lend: */ | |
2165 | }; | |
2166 | add_insns (buf, sizeof buf); | |
2167 | if (offset_p) | |
2168 | *offset_p = 42; | |
2169 | if (size_p) | |
2170 | *size_p = 4; | |
2171 | } | |
2172 | ||
2173 | /* The "emit_gt_goto" emit_ops method for s390. */ | |
2174 | ||
782c1122 | 2175 | static void |
f39e8743 MK |
2176 | s390_emit_gt_goto (int *offset_p, int *size_p) |
2177 | { | |
2178 | static const unsigned char buf[] = { | |
2179 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2180 | 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */ | |
2181 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */ | |
2182 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2183 | 0xa7, 0x44, 0x00, 0x08, /* jl .Ltrue */ | |
2184 | /* .Lfalse: */ | |
2185 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2186 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2187 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2188 | /* .Ltrue: */ | |
2189 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2190 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2191 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2192 | /* .Lend: */ | |
2193 | }; | |
2194 | add_insns (buf, sizeof buf); | |
2195 | if (offset_p) | |
2196 | *offset_p = 42; | |
2197 | if (size_p) | |
2198 | *size_p = 4; | |
2199 | } | |
2200 | ||
2201 | /* The "emit_ge_goto" emit_ops method for s390. */ | |
2202 | ||
782c1122 | 2203 | static void |
f39e8743 MK |
2204 | s390_emit_ge_goto (int *offset_p, int *size_p) |
2205 | { | |
2206 | static const unsigned char buf[] = { | |
2207 | 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */ | |
2208 | 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */ | |
2209 | 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */ | |
2210 | 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */ | |
2211 | 0xa7, 0xc4, 0x00, 0x08, /* jle .Ltrue */ | |
2212 | /* .Lfalse: */ | |
2213 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2214 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2215 | 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */ | |
2216 | /* .Ltrue: */ | |
2217 | 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */ | |
2218 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2219 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */ | |
2220 | /* .Lend: */ | |
2221 | }; | |
2222 | add_insns (buf, sizeof buf); | |
2223 | if (offset_p) | |
2224 | *offset_p = 42; | |
2225 | if (size_p) | |
2226 | *size_p = 4; | |
2227 | } | |
2228 | ||
2229 | /* The "emit_ops" structure for s390. Named _impl to avoid name | |
2230 | collision with s390_emit_ops function. */ | |
2231 | ||
782c1122 | 2232 | static struct emit_ops s390_emit_ops_impl = |
f39e8743 MK |
2233 | { |
2234 | s390_emit_prologue, | |
2235 | s390_emit_epilogue, | |
2236 | s390_emit_add, | |
2237 | s390_emit_sub, | |
2238 | s390_emit_mul, | |
2239 | s390_emit_lsh, | |
2240 | s390_emit_rsh_signed, | |
2241 | s390_emit_rsh_unsigned, | |
2242 | s390_emit_ext, | |
2243 | s390_emit_log_not, | |
2244 | s390_emit_bit_and, | |
2245 | s390_emit_bit_or, | |
2246 | s390_emit_bit_xor, | |
2247 | s390_emit_bit_not, | |
2248 | s390_emit_equal, | |
2249 | s390_emit_less_signed, | |
2250 | s390_emit_less_unsigned, | |
2251 | s390_emit_ref, | |
2252 | s390_emit_if_goto, | |
2253 | s390_emit_goto, | |
2254 | s390_write_goto_address, | |
2255 | s390_emit_const, | |
2256 | s390_emit_call, | |
2257 | s390_emit_reg, | |
2258 | s390_emit_pop, | |
2259 | s390_emit_stack_flush, | |
2260 | s390_emit_zero_ext, | |
2261 | s390_emit_swap, | |
2262 | s390_emit_stack_adjust, | |
2263 | s390_emit_int_call_1, | |
2264 | s390_emit_void_call_2, | |
2265 | s390_emit_eq_goto, | |
2266 | s390_emit_ne_goto, | |
2267 | s390_emit_lt_goto, | |
2268 | s390_emit_le_goto, | |
2269 | s390_emit_gt_goto, | |
2270 | s390_emit_ge_goto | |
2271 | }; | |
2272 | ||
2273 | #ifdef __s390x__ | |
2274 | ||
2275 | /* The "emit_prologue" emit_ops method for s390x. */ | |
2276 | ||
2277 | static void | |
2278 | s390x_emit_prologue (void) | |
2279 | { | |
2280 | static const unsigned char buf[] = { | |
2281 | 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x24, /* stmg %r9, %r15, 0x48(%r15) */ | |
2282 | 0xb9, 0x04, 0x00, 0x92, /* lgr %r9, %r2 */ | |
2283 | 0xb9, 0x04, 0x00, 0xa3, /* lgr %r10, %r3 */ | |
2284 | 0xb9, 0x04, 0x00, 0xbf, /* lgr %r11, %r15 */ | |
2285 | }; | |
2286 | add_insns (buf, sizeof buf); | |
2287 | } | |
2288 | ||
2289 | /* The "emit_epilogue" emit_ops method for s390x. */ | |
2290 | ||
2291 | static void | |
2292 | s390x_emit_epilogue (void) | |
2293 | { | |
2294 | static const unsigned char buf[] = { | |
2295 | 0xe3, 0x20, 0xa0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r10) */ | |
2296 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2297 | 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x04, /* lmg %r9, %r15, 0x48(%r15) */ | |
2298 | 0x07, 0xfe, /* br %r14 */ | |
2299 | }; | |
2300 | add_insns (buf, sizeof buf); | |
2301 | } | |
2302 | ||
2303 | /* The "emit_add" emit_ops method for s390x. */ | |
2304 | ||
2305 | static void | |
2306 | s390x_emit_add (void) | |
2307 | { | |
2308 | static const unsigned char buf[] = { | |
2309 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x0a, /* alg %r2, 0(%r15) */ | |
2310 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2311 | }; | |
2312 | add_insns (buf, sizeof buf); | |
2313 | } | |
2314 | ||
2315 | /* The "emit_sub" emit_ops method for s390x. */ | |
2316 | ||
2317 | static void | |
2318 | s390x_emit_sub (void) | |
2319 | { | |
2320 | static const unsigned char buf[] = { | |
2321 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2322 | 0xb9, 0x0b, 0x00, 0x32, /* slgr %r3, %r2 */ | |
2323 | 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */ | |
2324 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2325 | }; | |
2326 | add_insns (buf, sizeof buf); | |
2327 | } | |
2328 | ||
2329 | /* The "emit_mul" emit_ops method for s390x. */ | |
2330 | ||
2331 | static void | |
2332 | s390x_emit_mul (void) | |
2333 | { | |
2334 | emit_error = 1; | |
2335 | } | |
2336 | ||
2337 | /* The "emit_lsh" emit_ops method for s390x. */ | |
2338 | ||
2339 | static void | |
2340 | s390x_emit_lsh (void) | |
2341 | { | |
2342 | static const unsigned char buf[] = { | |
2343 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2344 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0d, /* sllg %r2, %r3, 0(%r2) */ | |
2345 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2346 | }; | |
2347 | add_insns (buf, sizeof buf); | |
2348 | } | |
2349 | ||
2350 | /* The "emit_rsh_signed" emit_ops method for s390x. */ | |
2351 | ||
2352 | static void | |
2353 | s390x_emit_rsh_signed (void) | |
2354 | { | |
2355 | static const unsigned char buf[] = { | |
2356 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2357 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0a, /* srag %r2, %r3, 0(%r2) */ | |
2358 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2359 | }; | |
2360 | add_insns (buf, sizeof buf); | |
2361 | } | |
2362 | ||
2363 | /* The "emit_rsh_unsigned" emit_ops method for s390x. */ | |
2364 | ||
2365 | static void | |
2366 | s390x_emit_rsh_unsigned (void) | |
2367 | { | |
2368 | static const unsigned char buf[] = { | |
2369 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2370 | 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0c, /* srlg %r2, %r3, 0(%r2) */ | |
2371 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2372 | }; | |
2373 | add_insns (buf, sizeof buf); | |
2374 | } | |
2375 | ||
2376 | /* The "emit_ext" emit_ops method for s390x. */ | |
2377 | ||
2378 | static void | |
2379 | s390x_emit_ext (int arg) | |
2380 | { | |
2381 | unsigned char buf[] = { | |
b4f183d2 TT |
2382 | /* sllg %r2, %r2, <64-arg> */ |
2383 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d, | |
2384 | /* srag %r2, %r2, <64-arg> */ | |
2385 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0a, | |
f39e8743 MK |
2386 | }; |
2387 | add_insns (buf, sizeof buf); | |
2388 | } | |
2389 | ||
2390 | /* The "emit_log_not" emit_ops method for s390x. */ | |
2391 | ||
2392 | static void | |
2393 | s390x_emit_log_not (void) | |
2394 | { | |
2395 | static const unsigned char buf[] = { | |
2396 | 0xb9, 0x00, 0x00, 0x22, /* lpgr %r2, %r2 */ | |
2397 | 0xa7, 0x2b, 0xff, 0xff, /* aghi %r2, -1 */ | |
2398 | 0xeb, 0x22, 0x00, 0x3f, 0x00, 0x0c, /* srlg %r2, %r2, 63 */ | |
2399 | }; | |
2400 | add_insns (buf, sizeof buf); | |
2401 | } | |
2402 | ||
2403 | /* The "emit_bit_and" emit_ops method for s390x. */ | |
2404 | ||
2405 | static void | |
2406 | s390x_emit_bit_and (void) | |
2407 | { | |
2408 | static const unsigned char buf[] = { | |
2409 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x80, /* ng %r2, 0(%r15) */ | |
2410 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2411 | }; | |
2412 | add_insns (buf, sizeof buf); | |
2413 | } | |
2414 | ||
2415 | /* The "emit_bit_or" emit_ops method for s390x. */ | |
2416 | ||
2417 | static void | |
2418 | s390x_emit_bit_or (void) | |
2419 | { | |
2420 | static const unsigned char buf[] = { | |
2421 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x81, /* og %r2, 0(%r15) */ | |
2422 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2423 | }; | |
2424 | add_insns (buf, sizeof buf); | |
2425 | } | |
2426 | ||
2427 | /* The "emit_bit_xor" emit_ops method for s390x. */ | |
2428 | ||
2429 | static void | |
2430 | s390x_emit_bit_xor (void) | |
2431 | { | |
2432 | static const unsigned char buf[] = { | |
2433 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x82, /* xg %r2, 0(%r15) */ | |
2434 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2435 | }; | |
2436 | add_insns (buf, sizeof buf); | |
2437 | } | |
2438 | ||
2439 | /* The "emit_bit_not" emit_ops method for s390x. */ | |
2440 | ||
2441 | static void | |
2442 | s390x_emit_bit_not (void) | |
2443 | { | |
2444 | static const unsigned char buf[] = { | |
2445 | 0xa7, 0x39, 0xff, 0xff, /* lghi %r3, -1 */ | |
2446 | 0xb9, 0x82, 0x00, 0x23, /* xgr %r2, %r3 */ | |
2447 | }; | |
2448 | add_insns (buf, sizeof buf); | |
2449 | } | |
2450 | ||
2451 | /* The "emit_equal" emit_ops method for s390x. */ | |
2452 | ||
2453 | static void | |
2454 | s390x_emit_equal (void) | |
2455 | { | |
2456 | s390x_emit_bit_xor (); | |
2457 | s390x_emit_log_not (); | |
2458 | } | |
2459 | ||
2460 | /* The "emit_less_signed" emit_ops method for s390x. */ | |
2461 | ||
2462 | static void | |
2463 | s390x_emit_less_signed (void) | |
2464 | { | |
2465 | static const unsigned char buf[] = { | |
2466 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2467 | 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */ | |
2468 | 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */ | |
2469 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2470 | /* .Lend: */ | |
2471 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2472 | }; | |
2473 | add_insns (buf, sizeof buf); | |
2474 | } | |
2475 | ||
2476 | /* The "emit_less_unsigned" emit_ops method for s390x. */ | |
2477 | ||
2478 | static void | |
2479 | s390x_emit_less_unsigned (void) | |
2480 | { | |
2481 | static const unsigned char buf[] = { | |
2482 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x21, /* clg %r2, 0(%r15) */ | |
2483 | 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */ | |
2484 | 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */ | |
2485 | 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */ | |
2486 | /* .Lend: */ | |
2487 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2488 | }; | |
2489 | add_insns (buf, sizeof buf); | |
2490 | } | |
2491 | ||
2492 | /* The "emit_ref" emit_ops method for s390x. */ | |
2493 | ||
2494 | static void | |
2495 | s390x_emit_ref (int size) | |
2496 | { | |
2497 | static const unsigned char buf1[] = { | |
2498 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x90, /* llgc %r2, 0(%r2) */ | |
2499 | }; | |
2500 | static const unsigned char buf2[] = { | |
2501 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x91 /* llgh %r2, 0(%r2) */ | |
2502 | }; | |
2503 | static const unsigned char buf4[] = { | |
2504 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x16, /* llgf %r2, 0(%r2) */ | |
2505 | }; | |
2506 | static const unsigned char buf8[] = { | |
2507 | 0xe3, 0x20, 0x20, 0x00, 0x00, 0x04, /* lg %r2, 0(%r2) */ | |
2508 | }; | |
2509 | switch (size) | |
2510 | { | |
2511 | case 1: | |
2512 | add_insns (buf1, sizeof buf1); | |
2513 | break; | |
2514 | case 2: | |
2515 | add_insns (buf2, sizeof buf2); | |
2516 | break; | |
2517 | case 4: | |
2518 | add_insns (buf4, sizeof buf4); | |
2519 | break; | |
2520 | case 8: | |
2521 | add_insns (buf8, sizeof buf8); | |
2522 | break; | |
2523 | default: | |
2524 | emit_error = 1; | |
2525 | } | |
2526 | } | |
2527 | ||
2528 | /* The "emit_if_goto" emit_ops method for s390x. */ | |
2529 | ||
2530 | static void | |
2531 | s390x_emit_if_goto (int *offset_p, int *size_p) | |
2532 | { | |
2533 | static const unsigned char buf[] = { | |
2534 | 0xb9, 0x02, 0x00, 0x22, /* ltgr %r2, %r2 */ | |
2535 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */ | |
2536 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2537 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2538 | }; | |
2539 | add_insns (buf, sizeof buf); | |
2540 | if (offset_p) | |
2541 | *offset_p = 16; | |
2542 | if (size_p) | |
2543 | *size_p = 4; | |
2544 | } | |
2545 | ||
2546 | /* The "emit_const" emit_ops method for s390x. */ | |
2547 | ||
2548 | static void | |
2549 | s390x_emit_const (LONGEST num) | |
2550 | { | |
2551 | unsigned long long n = num; | |
2552 | unsigned char buf_s[] = { | |
b4f183d2 TT |
2553 | /* lghi %r2, <num> */ |
2554 | 0xa7, 0x29, (unsigned char) (num >> 8), (unsigned char) num, | |
f39e8743 MK |
2555 | }; |
2556 | static const unsigned char buf_l[] = { | |
2557 | 0xe3, 0x20, 0x10, 0x00, 0x00, 0x04, /* lg %r2, 0(%r1) */ | |
2558 | }; | |
2559 | if (num < 0x8000 && num >= -0x8000) | |
2560 | { | |
2561 | add_insns (buf_s, sizeof buf_s); | |
2562 | } | |
2563 | else | |
2564 | { | |
2565 | s390_emit_litpool (8); | |
2566 | add_insns ((unsigned char *) &n, sizeof n); | |
2567 | add_insns (buf_l, sizeof buf_l); | |
2568 | } | |
2569 | } | |
2570 | ||
2571 | /* The "emit_call" emit_ops method for s390x. */ | |
2572 | ||
2573 | static void | |
2574 | s390x_emit_call (CORE_ADDR fn) | |
2575 | { | |
2576 | unsigned long n = fn; | |
2577 | static const unsigned char buf[] = { | |
2578 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1, 0(%r1) */ | |
2579 | 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */ | |
2580 | 0x0d, 0xe1, /* basr %r14, %r1 */ | |
2581 | 0xa7, 0xfb, 0x00, 0xa0, /* aghi %r15, 0xa0 */ | |
2582 | }; | |
2583 | s390_emit_litpool (8); | |
2584 | add_insns ((unsigned char *) &n, sizeof n); | |
2585 | add_insns (buf, sizeof buf); | |
2586 | } | |
2587 | ||
2588 | /* The "emit_reg" emit_ops method for s390x. */ | |
2589 | ||
2590 | static void | |
2591 | s390x_emit_reg (int reg) | |
2592 | { | |
2593 | unsigned char buf[] = { | |
b4f183d2 TT |
2594 | /* lgr %r2, %r9 */ |
2595 | 0xb9, 0x04, 0x00, 0x29, | |
2596 | /* lghi %r3, <reg> */ | |
2597 | 0xa7, 0x39, (unsigned char) (reg >> 8), (unsigned char) reg, | |
f39e8743 MK |
2598 | }; |
2599 | add_insns (buf, sizeof buf); | |
2600 | s390x_emit_call (get_raw_reg_func_addr ()); | |
2601 | } | |
2602 | ||
2603 | /* The "emit_pop" emit_ops method for s390x. */ | |
2604 | ||
2605 | static void | |
2606 | s390x_emit_pop (void) | |
2607 | { | |
2608 | static const unsigned char buf[] = { | |
2609 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */ | |
2610 | 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */ | |
2611 | }; | |
2612 | add_insns (buf, sizeof buf); | |
2613 | } | |
2614 | ||
2615 | /* The "emit_stack_flush" emit_ops method for s390x. */ | |
2616 | ||
2617 | static void | |
2618 | s390x_emit_stack_flush (void) | |
2619 | { | |
2620 | static const unsigned char buf[] = { | |
2621 | 0xa7, 0xfb, 0xff, 0xf8, /* aghi %r15, -8 */ | |
2622 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */ | |
2623 | }; | |
2624 | add_insns (buf, sizeof buf); | |
2625 | } | |
2626 | ||
2627 | /* The "emit_zero_ext" emit_ops method for s390x. */ | |
2628 | ||
2629 | static void | |
2630 | s390x_emit_zero_ext (int arg) | |
2631 | { | |
2632 | unsigned char buf[] = { | |
b4f183d2 TT |
2633 | /* sllg %r2, %r2, <64-arg> */ |
2634 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d, | |
2635 | /* srlg %r2, %r2, <64-arg> */ | |
2636 | 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0c, | |
f39e8743 MK |
2637 | }; |
2638 | add_insns (buf, sizeof buf); | |
2639 | } | |
2640 | ||
2641 | /* The "emit_swap" emit_ops method for s390x. */ | |
2642 | ||
2643 | static void | |
2644 | s390x_emit_swap (void) | |
2645 | { | |
2646 | static const unsigned char buf[] = { | |
2647 | 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */ | |
2648 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */ | |
2649 | 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */ | |
2650 | }; | |
2651 | add_insns (buf, sizeof buf); | |
2652 | } | |
2653 | ||
2654 | /* The "emit_stack_adjust" emit_ops method for s390x. */ | |
2655 | ||
2656 | static void | |
2657 | s390x_emit_stack_adjust (int n) | |
2658 | { | |
2659 | unsigned char buf[] = { | |
b4f183d2 TT |
2660 | /* aghi %r15, 8*n */ |
2661 | 0xa7, 0xfb, | |
2662 | (unsigned char) (n * 8 >> 8), (unsigned char) (n * 8), | |
f39e8743 MK |
2663 | }; |
2664 | add_insns (buf, sizeof buf); | |
2665 | } | |
2666 | ||
2667 | /* The "emit_int_call_1" emit_ops method for s390x. */ | |
2668 | ||
2669 | static void | |
2670 | s390x_emit_int_call_1 (CORE_ADDR fn, int arg1) | |
2671 | { | |
2672 | /* FN's prototype is `LONGEST(*fn)(int)'. */ | |
2673 | s390x_emit_const (arg1); | |
2674 | s390x_emit_call (fn); | |
2675 | } | |
2676 | ||
2677 | /* The "emit_void_call_2" emit_ops method for s390x. */ | |
2678 | ||
2679 | static void | |
2680 | s390x_emit_void_call_2 (CORE_ADDR fn, int arg1) | |
2681 | { | |
2682 | /* FN's prototype is `void(*fn)(int,LONGEST)'. */ | |
2683 | static const unsigned char buf[] = { | |
2684 | 0xb9, 0x04, 0x00, 0x32, /* lgr %r3, %r2 */ | |
2685 | 0xb9, 0x04, 0x00, 0xc2, /* lgr %r12, %r2 */ | |
2686 | }; | |
2687 | static const unsigned char buf2[] = { | |
2688 | 0xb9, 0x04, 0x00, 0x2c, /* lgr %r2, %r12 */ | |
2689 | }; | |
2690 | add_insns (buf, sizeof buf); | |
2691 | s390x_emit_const (arg1); | |
2692 | s390x_emit_call (fn); | |
2693 | add_insns (buf2, sizeof buf2); | |
2694 | } | |
2695 | ||
2696 | /* The "emit_eq_goto" emit_ops method for s390x. */ | |
2697 | ||
782c1122 | 2698 | static void |
f39e8743 MK |
2699 | s390x_emit_eq_goto (int *offset_p, int *size_p) |
2700 | { | |
2701 | static const unsigned char buf[] = { | |
2702 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2703 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2704 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2705 | 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */ | |
2706 | }; | |
2707 | add_insns (buf, sizeof buf); | |
2708 | if (offset_p) | |
2709 | *offset_p = 18; | |
2710 | if (size_p) | |
2711 | *size_p = 4; | |
2712 | } | |
2713 | ||
2714 | /* The "emit_ne_goto" emit_ops method for s390x. */ | |
2715 | ||
782c1122 | 2716 | static void |
f39e8743 MK |
2717 | s390x_emit_ne_goto (int *offset_p, int *size_p) |
2718 | { | |
2719 | static const unsigned char buf[] = { | |
2720 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2721 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2722 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2723 | 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */ | |
2724 | }; | |
2725 | add_insns (buf, sizeof buf); | |
2726 | if (offset_p) | |
2727 | *offset_p = 18; | |
2728 | if (size_p) | |
2729 | *size_p = 4; | |
2730 | } | |
2731 | ||
2732 | /* The "emit_lt_goto" emit_ops method for s390x. */ | |
2733 | ||
782c1122 | 2734 | static void |
f39e8743 MK |
2735 | s390x_emit_lt_goto (int *offset_p, int *size_p) |
2736 | { | |
2737 | static const unsigned char buf[] = { | |
2738 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2739 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2740 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2741 | 0xc0, 0x24, 0x00, 0x00, 0x00, 0x00, /* jgh <fillme> */ | |
2742 | }; | |
2743 | add_insns (buf, sizeof buf); | |
2744 | if (offset_p) | |
2745 | *offset_p = 18; | |
2746 | if (size_p) | |
2747 | *size_p = 4; | |
2748 | } | |
2749 | ||
2750 | /* The "emit_le_goto" emit_ops method for s390x. */ | |
2751 | ||
782c1122 | 2752 | static void |
f39e8743 MK |
2753 | s390x_emit_le_goto (int *offset_p, int *size_p) |
2754 | { | |
2755 | static const unsigned char buf[] = { | |
2756 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2757 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2758 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2759 | 0xc0, 0xa4, 0x00, 0x00, 0x00, 0x00, /* jghe <fillme> */ | |
2760 | }; | |
2761 | add_insns (buf, sizeof buf); | |
2762 | if (offset_p) | |
2763 | *offset_p = 18; | |
2764 | if (size_p) | |
2765 | *size_p = 4; | |
2766 | } | |
2767 | ||
2768 | /* The "emit_gt_goto" emit_ops method for s390x. */ | |
2769 | ||
782c1122 | 2770 | static void |
f39e8743 MK |
2771 | s390x_emit_gt_goto (int *offset_p, int *size_p) |
2772 | { | |
2773 | static const unsigned char buf[] = { | |
2774 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2775 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2776 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2777 | 0xc0, 0x44, 0x00, 0x00, 0x00, 0x00, /* jgl <fillme> */ | |
2778 | }; | |
2779 | add_insns (buf, sizeof buf); | |
2780 | if (offset_p) | |
2781 | *offset_p = 18; | |
2782 | if (size_p) | |
2783 | *size_p = 4; | |
2784 | } | |
2785 | ||
2786 | /* The "emit_ge_goto" emit_ops method for s390x. */ | |
2787 | ||
782c1122 | 2788 | static void |
f39e8743 MK |
2789 | s390x_emit_ge_goto (int *offset_p, int *size_p) |
2790 | { | |
2791 | static const unsigned char buf[] = { | |
2792 | 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */ | |
2793 | 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */ | |
2794 | 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */ | |
2795 | 0xc0, 0xc4, 0x00, 0x00, 0x00, 0x00, /* jgle <fillme> */ | |
2796 | }; | |
2797 | add_insns (buf, sizeof buf); | |
2798 | if (offset_p) | |
2799 | *offset_p = 18; | |
2800 | if (size_p) | |
2801 | *size_p = 4; | |
2802 | } | |
2803 | ||
2804 | /* The "emit_ops" structure for s390x. */ | |
2805 | ||
782c1122 | 2806 | static struct emit_ops s390x_emit_ops = |
f39e8743 MK |
2807 | { |
2808 | s390x_emit_prologue, | |
2809 | s390x_emit_epilogue, | |
2810 | s390x_emit_add, | |
2811 | s390x_emit_sub, | |
2812 | s390x_emit_mul, | |
2813 | s390x_emit_lsh, | |
2814 | s390x_emit_rsh_signed, | |
2815 | s390x_emit_rsh_unsigned, | |
2816 | s390x_emit_ext, | |
2817 | s390x_emit_log_not, | |
2818 | s390x_emit_bit_and, | |
2819 | s390x_emit_bit_or, | |
2820 | s390x_emit_bit_xor, | |
2821 | s390x_emit_bit_not, | |
2822 | s390x_emit_equal, | |
2823 | s390x_emit_less_signed, | |
2824 | s390x_emit_less_unsigned, | |
2825 | s390x_emit_ref, | |
2826 | s390x_emit_if_goto, | |
2827 | s390_emit_goto, | |
2828 | s390_write_goto_address, | |
2829 | s390x_emit_const, | |
2830 | s390x_emit_call, | |
2831 | s390x_emit_reg, | |
2832 | s390x_emit_pop, | |
2833 | s390x_emit_stack_flush, | |
2834 | s390x_emit_zero_ext, | |
2835 | s390x_emit_swap, | |
2836 | s390x_emit_stack_adjust, | |
2837 | s390x_emit_int_call_1, | |
2838 | s390x_emit_void_call_2, | |
2839 | s390x_emit_eq_goto, | |
2840 | s390x_emit_ne_goto, | |
2841 | s390x_emit_lt_goto, | |
2842 | s390x_emit_le_goto, | |
2843 | s390x_emit_gt_goto, | |
2844 | s390x_emit_ge_goto | |
2845 | }; | |
2846 | #endif | |
2847 | ||
2848 | /* The "emit_ops" linux_target_ops method. */ | |
2849 | ||
2850 | static struct emit_ops * | |
2851 | s390_emit_ops (void) | |
2852 | { | |
2853 | #ifdef __s390x__ | |
2854 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
2855 | ||
2856 | if (register_size (regcache->tdesc, 0) == 8) | |
2857 | return &s390x_emit_ops; | |
2858 | else | |
2859 | #endif | |
2860 | return &s390_emit_ops_impl; | |
2861 | } | |
2862 | ||
2ec06d2e | 2863 | struct linux_target_ops the_low_target = { |
f39e8743 | 2864 | s390_emit_ops, |
7d00775e | 2865 | NULL, /* supports_range_stepping */ |
7d00775e | 2866 | s390_supports_hardware_single_step, |
abd9baf9 MK |
2867 | NULL, /* get_syscall_trapinfo */ |
2868 | s390_get_ipa_tdesc_idx, | |
2ec06d2e | 2869 | }; |
3aee8918 | 2870 | |
ef0478f6 TBA |
2871 | /* The linux target ops object. */ |
2872 | ||
2873 | linux_process_target *the_linux_target = &the_s390_target; | |
2874 | ||
3aee8918 PA |
2875 | void |
2876 | initialize_low_arch (void) | |
2877 | { | |
2878 | /* Initialize the Linux target descriptions. */ | |
2879 | ||
2880 | init_registers_s390_linux32 (); | |
2881 | init_registers_s390_linux32v1 (); | |
2882 | init_registers_s390_linux32v2 (); | |
2883 | init_registers_s390_linux64 (); | |
2884 | init_registers_s390_linux64v1 (); | |
2885 | init_registers_s390_linux64v2 (); | |
4ac33720 | 2886 | init_registers_s390_te_linux64 (); |
bf2d68ab AA |
2887 | init_registers_s390_vx_linux64 (); |
2888 | init_registers_s390_tevx_linux64 (); | |
ad339634 | 2889 | init_registers_s390_gs_linux64 (); |
abd9baf9 | 2890 | #ifdef __s390x__ |
3aee8918 PA |
2891 | init_registers_s390x_linux64 (); |
2892 | init_registers_s390x_linux64v1 (); | |
2893 | init_registers_s390x_linux64v2 (); | |
4ac33720 | 2894 | init_registers_s390x_te_linux64 (); |
bf2d68ab AA |
2895 | init_registers_s390x_vx_linux64 (); |
2896 | init_registers_s390x_tevx_linux64 (); | |
ad339634 | 2897 | init_registers_s390x_gs_linux64 (); |
abd9baf9 | 2898 | #endif |
3aee8918 PA |
2899 | |
2900 | initialize_regsets_info (&s390_regsets_info); | |
3aee8918 | 2901 | initialize_regsets_info (&s390_regsets_info_3264); |
3aee8918 | 2902 | } |