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1da177e4 LT |
1 | /* |
2 | * include/asm-s390/ptrace.h | |
3 | * | |
4 | * S390 version | |
5 | * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation | |
6 | * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) | |
7 | */ | |
8 | ||
9 | #ifndef _S390_PTRACE_H | |
10 | #define _S390_PTRACE_H | |
11 | ||
12 | /* | |
13 | * Offsets in the user_regs_struct. They are used for the ptrace | |
14 | * system call and in entry.S | |
15 | */ | |
16 | #ifndef __s390x__ | |
17 | ||
18 | #define PT_PSWMASK 0x00 | |
19 | #define PT_PSWADDR 0x04 | |
20 | #define PT_GPR0 0x08 | |
21 | #define PT_GPR1 0x0C | |
22 | #define PT_GPR2 0x10 | |
23 | #define PT_GPR3 0x14 | |
24 | #define PT_GPR4 0x18 | |
25 | #define PT_GPR5 0x1C | |
26 | #define PT_GPR6 0x20 | |
27 | #define PT_GPR7 0x24 | |
28 | #define PT_GPR8 0x28 | |
29 | #define PT_GPR9 0x2C | |
30 | #define PT_GPR10 0x30 | |
31 | #define PT_GPR11 0x34 | |
32 | #define PT_GPR12 0x38 | |
33 | #define PT_GPR13 0x3C | |
34 | #define PT_GPR14 0x40 | |
35 | #define PT_GPR15 0x44 | |
36 | #define PT_ACR0 0x48 | |
37 | #define PT_ACR1 0x4C | |
38 | #define PT_ACR2 0x50 | |
39 | #define PT_ACR3 0x54 | |
40 | #define PT_ACR4 0x58 | |
41 | #define PT_ACR5 0x5C | |
42 | #define PT_ACR6 0x60 | |
43 | #define PT_ACR7 0x64 | |
44 | #define PT_ACR8 0x68 | |
45 | #define PT_ACR9 0x6C | |
46 | #define PT_ACR10 0x70 | |
47 | #define PT_ACR11 0x74 | |
48 | #define PT_ACR12 0x78 | |
49 | #define PT_ACR13 0x7C | |
50 | #define PT_ACR14 0x80 | |
51 | #define PT_ACR15 0x84 | |
52 | #define PT_ORIGGPR2 0x88 | |
53 | #define PT_FPC 0x90 | |
54 | /* | |
55 | * A nasty fact of life that the ptrace api | |
56 | * only supports passing of longs. | |
57 | */ | |
58 | #define PT_FPR0_HI 0x98 | |
59 | #define PT_FPR0_LO 0x9C | |
60 | #define PT_FPR1_HI 0xA0 | |
61 | #define PT_FPR1_LO 0xA4 | |
62 | #define PT_FPR2_HI 0xA8 | |
63 | #define PT_FPR2_LO 0xAC | |
64 | #define PT_FPR3_HI 0xB0 | |
65 | #define PT_FPR3_LO 0xB4 | |
66 | #define PT_FPR4_HI 0xB8 | |
67 | #define PT_FPR4_LO 0xBC | |
68 | #define PT_FPR5_HI 0xC0 | |
69 | #define PT_FPR5_LO 0xC4 | |
70 | #define PT_FPR6_HI 0xC8 | |
71 | #define PT_FPR6_LO 0xCC | |
72 | #define PT_FPR7_HI 0xD0 | |
73 | #define PT_FPR7_LO 0xD4 | |
74 | #define PT_FPR8_HI 0xD8 | |
75 | #define PT_FPR8_LO 0XDC | |
76 | #define PT_FPR9_HI 0xE0 | |
77 | #define PT_FPR9_LO 0xE4 | |
78 | #define PT_FPR10_HI 0xE8 | |
79 | #define PT_FPR10_LO 0xEC | |
80 | #define PT_FPR11_HI 0xF0 | |
81 | #define PT_FPR11_LO 0xF4 | |
82 | #define PT_FPR12_HI 0xF8 | |
83 | #define PT_FPR12_LO 0xFC | |
84 | #define PT_FPR13_HI 0x100 | |
85 | #define PT_FPR13_LO 0x104 | |
86 | #define PT_FPR14_HI 0x108 | |
87 | #define PT_FPR14_LO 0x10C | |
88 | #define PT_FPR15_HI 0x110 | |
89 | #define PT_FPR15_LO 0x114 | |
90 | #define PT_CR_9 0x118 | |
91 | #define PT_CR_10 0x11C | |
92 | #define PT_CR_11 0x120 | |
93 | #define PT_IEEE_IP 0x13C | |
94 | #define PT_LASTOFF PT_IEEE_IP | |
95 | #define PT_ENDREGS 0x140-1 | |
96 | ||
97 | #define GPR_SIZE 4 | |
98 | #define CR_SIZE 4 | |
99 | ||
100 | #define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */ | |
101 | ||
102 | #else /* __s390x__ */ | |
103 | ||
104 | #define PT_PSWMASK 0x00 | |
105 | #define PT_PSWADDR 0x08 | |
106 | #define PT_GPR0 0x10 | |
107 | #define PT_GPR1 0x18 | |
108 | #define PT_GPR2 0x20 | |
109 | #define PT_GPR3 0x28 | |
110 | #define PT_GPR4 0x30 | |
111 | #define PT_GPR5 0x38 | |
112 | #define PT_GPR6 0x40 | |
113 | #define PT_GPR7 0x48 | |
114 | #define PT_GPR8 0x50 | |
115 | #define PT_GPR9 0x58 | |
116 | #define PT_GPR10 0x60 | |
117 | #define PT_GPR11 0x68 | |
118 | #define PT_GPR12 0x70 | |
119 | #define PT_GPR13 0x78 | |
120 | #define PT_GPR14 0x80 | |
121 | #define PT_GPR15 0x88 | |
122 | #define PT_ACR0 0x90 | |
123 | #define PT_ACR1 0x94 | |
124 | #define PT_ACR2 0x98 | |
125 | #define PT_ACR3 0x9C | |
126 | #define PT_ACR4 0xA0 | |
127 | #define PT_ACR5 0xA4 | |
128 | #define PT_ACR6 0xA8 | |
129 | #define PT_ACR7 0xAC | |
130 | #define PT_ACR8 0xB0 | |
131 | #define PT_ACR9 0xB4 | |
132 | #define PT_ACR10 0xB8 | |
133 | #define PT_ACR11 0xBC | |
134 | #define PT_ACR12 0xC0 | |
135 | #define PT_ACR13 0xC4 | |
136 | #define PT_ACR14 0xC8 | |
137 | #define PT_ACR15 0xCC | |
138 | #define PT_ORIGGPR2 0xD0 | |
139 | #define PT_FPC 0xD8 | |
140 | #define PT_FPR0 0xE0 | |
141 | #define PT_FPR1 0xE8 | |
142 | #define PT_FPR2 0xF0 | |
143 | #define PT_FPR3 0xF8 | |
144 | #define PT_FPR4 0x100 | |
145 | #define PT_FPR5 0x108 | |
146 | #define PT_FPR6 0x110 | |
147 | #define PT_FPR7 0x118 | |
148 | #define PT_FPR8 0x120 | |
149 | #define PT_FPR9 0x128 | |
150 | #define PT_FPR10 0x130 | |
151 | #define PT_FPR11 0x138 | |
152 | #define PT_FPR12 0x140 | |
153 | #define PT_FPR13 0x148 | |
154 | #define PT_FPR14 0x150 | |
155 | #define PT_FPR15 0x158 | |
156 | #define PT_CR_9 0x160 | |
157 | #define PT_CR_10 0x168 | |
158 | #define PT_CR_11 0x170 | |
159 | #define PT_IEEE_IP 0x1A8 | |
160 | #define PT_LASTOFF PT_IEEE_IP | |
161 | #define PT_ENDREGS 0x1B0-1 | |
162 | ||
163 | #define GPR_SIZE 8 | |
164 | #define CR_SIZE 8 | |
165 | ||
166 | #define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */ | |
167 | ||
168 | #endif /* __s390x__ */ | |
169 | ||
170 | #define NUM_GPRS 16 | |
171 | #define NUM_FPRS 16 | |
172 | #define NUM_CRS 16 | |
173 | #define NUM_ACRS 16 | |
174 | ||
175 | #define FPR_SIZE 8 | |
176 | #define FPC_SIZE 4 | |
177 | #define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ | |
178 | #define ACR_SIZE 4 | |
179 | ||
180 | ||
181 | #define PTRACE_OLDSETOPTIONS 21 | |
182 | ||
183 | #ifndef __ASSEMBLY__ | |
1da177e4 LT |
184 | #include <linux/stddef.h> |
185 | #include <linux/types.h> | |
1da177e4 LT |
186 | |
187 | typedef union | |
188 | { | |
189 | float f; | |
190 | double d; | |
191 | __u64 ui; | |
192 | struct | |
193 | { | |
194 | __u32 hi; | |
195 | __u32 lo; | |
196 | } fp; | |
197 | } freg_t; | |
198 | ||
199 | typedef struct | |
200 | { | |
201 | __u32 fpc; | |
202 | freg_t fprs[NUM_FPRS]; | |
203 | } s390_fp_regs; | |
204 | ||
205 | #define FPC_EXCEPTION_MASK 0xF8000000 | |
206 | #define FPC_FLAGS_MASK 0x00F80000 | |
207 | #define FPC_DXC_MASK 0x0000FF00 | |
208 | #define FPC_RM_MASK 0x00000003 | |
209 | #define FPC_VALID_MASK 0xF8F8FF03 | |
210 | ||
211 | /* this typedef defines how a Program Status Word looks like */ | |
212 | typedef struct | |
213 | { | |
214 | unsigned long mask; | |
215 | unsigned long addr; | |
216 | } __attribute__ ((aligned(8))) psw_t; | |
217 | ||
63506c41 MS |
218 | typedef struct |
219 | { | |
220 | __u32 mask; | |
221 | __u32 addr; | |
222 | } __attribute__ ((aligned(8))) psw_compat_t; | |
223 | ||
1da177e4 LT |
224 | #ifndef __s390x__ |
225 | ||
226 | #define PSW_MASK_PER 0x40000000UL | |
227 | #define PSW_MASK_DAT 0x04000000UL | |
228 | #define PSW_MASK_IO 0x02000000UL | |
229 | #define PSW_MASK_EXT 0x01000000UL | |
230 | #define PSW_MASK_KEY 0x00F00000UL | |
231 | #define PSW_MASK_MCHECK 0x00040000UL | |
232 | #define PSW_MASK_WAIT 0x00020000UL | |
233 | #define PSW_MASK_PSTATE 0x00010000UL | |
234 | #define PSW_MASK_ASC 0x0000C000UL | |
235 | #define PSW_MASK_CC 0x00003000UL | |
236 | #define PSW_MASK_PM 0x00000F00UL | |
237 | ||
238 | #define PSW_ADDR_AMODE 0x80000000UL | |
239 | #define PSW_ADDR_INSN 0x7FFFFFFFUL | |
240 | ||
241 | #define PSW_BASE_BITS 0x00080000UL | |
0b642ede | 242 | #define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 20) |
1da177e4 LT |
243 | |
244 | #define PSW_ASC_PRIMARY 0x00000000UL | |
245 | #define PSW_ASC_ACCREG 0x00004000UL | |
246 | #define PSW_ASC_SECONDARY 0x00008000UL | |
247 | #define PSW_ASC_HOME 0x0000C000UL | |
248 | ||
249 | #else /* __s390x__ */ | |
250 | ||
251 | #define PSW_MASK_PER 0x4000000000000000UL | |
252 | #define PSW_MASK_DAT 0x0400000000000000UL | |
253 | #define PSW_MASK_IO 0x0200000000000000UL | |
254 | #define PSW_MASK_EXT 0x0100000000000000UL | |
255 | #define PSW_MASK_KEY 0x00F0000000000000UL | |
256 | #define PSW_MASK_MCHECK 0x0004000000000000UL | |
257 | #define PSW_MASK_WAIT 0x0002000000000000UL | |
258 | #define PSW_MASK_PSTATE 0x0001000000000000UL | |
259 | #define PSW_MASK_ASC 0x0000C00000000000UL | |
260 | #define PSW_MASK_CC 0x0000300000000000UL | |
261 | #define PSW_MASK_PM 0x00000F0000000000UL | |
262 | ||
263 | #define PSW_ADDR_AMODE 0x0000000000000000UL | |
264 | #define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL | |
265 | ||
266 | #define PSW_BASE_BITS 0x0000000180000000UL | |
267 | #define PSW_BASE32_BITS 0x0000000080000000UL | |
0b642ede | 268 | #define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 52) |
1da177e4 LT |
269 | |
270 | #define PSW_ASC_PRIMARY 0x0000000000000000UL | |
271 | #define PSW_ASC_ACCREG 0x0000400000000000UL | |
272 | #define PSW_ASC_SECONDARY 0x0000800000000000UL | |
273 | #define PSW_ASC_HOME 0x0000C00000000000UL | |
274 | ||
1da177e4 LT |
275 | #endif /* __s390x__ */ |
276 | ||
16de0582 | 277 | #ifdef __KERNEL__ |
c1821c2e GS |
278 | extern long psw_kernel_bits; |
279 | extern long psw_user_bits; | |
16de0582 HC |
280 | #ifdef CONFIG_64BIT |
281 | extern long psw_user32_bits; | |
282 | #endif | |
283 | #endif | |
1da177e4 LT |
284 | |
285 | /* This macro merges a NEW PSW mask specified by the user into | |
286 | the currently active PSW mask CURRENT, modifying only those | |
287 | bits in CURRENT that the user may be allowed to change: this | |
288 | is the condition code and the program mask bits. */ | |
289 | #define PSW_MASK_MERGE(CURRENT,NEW) \ | |
290 | (((CURRENT) & ~(PSW_MASK_CC|PSW_MASK_PM)) | \ | |
291 | ((NEW) & (PSW_MASK_CC|PSW_MASK_PM))) | |
292 | ||
293 | /* | |
294 | * The s390_regs structure is used to define the elf_gregset_t. | |
295 | */ | |
296 | typedef struct | |
297 | { | |
298 | psw_t psw; | |
299 | unsigned long gprs[NUM_GPRS]; | |
300 | unsigned int acrs[NUM_ACRS]; | |
301 | unsigned long orig_gpr2; | |
302 | } s390_regs; | |
303 | ||
63506c41 MS |
304 | typedef struct |
305 | { | |
306 | psw_compat_t psw; | |
307 | __u32 gprs[NUM_GPRS]; | |
308 | __u32 acrs[NUM_ACRS]; | |
309 | __u32 orig_gpr2; | |
310 | } s390_compat_regs; | |
311 | ||
312 | ||
1da177e4 | 313 | #ifdef __KERNEL__ |
274f5946 DW |
314 | #include <asm/setup.h> |
315 | #include <asm/page.h> | |
316 | ||
1da177e4 LT |
317 | /* |
318 | * The pt_regs struct defines the way the registers are stored on | |
319 | * the stack during a system call. | |
320 | */ | |
321 | struct pt_regs | |
322 | { | |
323 | unsigned long args[1]; | |
324 | psw_t psw; | |
325 | unsigned long gprs[NUM_GPRS]; | |
326 | unsigned long orig_gpr2; | |
59da2139 | 327 | unsigned short svcnr; |
1da177e4 | 328 | unsigned short ilc; |
1da177e4 LT |
329 | }; |
330 | #endif | |
331 | ||
332 | /* | |
333 | * Now for the program event recording (trace) definitions. | |
334 | */ | |
335 | typedef struct | |
336 | { | |
337 | unsigned long cr[3]; | |
338 | } per_cr_words; | |
339 | ||
340 | #define PER_EM_MASK 0xE8000000UL | |
341 | ||
342 | typedef struct | |
343 | { | |
344 | #ifdef __s390x__ | |
345 | unsigned : 32; | |
346 | #endif /* __s390x__ */ | |
347 | unsigned em_branching : 1; | |
348 | unsigned em_instruction_fetch : 1; | |
349 | /* | |
350 | * Switching on storage alteration automatically fixes | |
351 | * the storage alteration event bit in the users std. | |
352 | */ | |
353 | unsigned em_storage_alteration : 1; | |
354 | unsigned em_gpr_alt_unused : 1; | |
355 | unsigned em_store_real_address : 1; | |
356 | unsigned : 3; | |
357 | unsigned branch_addr_ctl : 1; | |
358 | unsigned : 1; | |
359 | unsigned storage_alt_space_ctl : 1; | |
360 | unsigned : 21; | |
361 | unsigned long starting_addr; | |
362 | unsigned long ending_addr; | |
363 | } per_cr_bits; | |
364 | ||
365 | typedef struct | |
366 | { | |
367 | unsigned short perc_atmid; | |
368 | unsigned long address; | |
369 | unsigned char access_id; | |
370 | } per_lowcore_words; | |
371 | ||
372 | typedef struct | |
373 | { | |
374 | unsigned perc_branching : 1; | |
375 | unsigned perc_instruction_fetch : 1; | |
376 | unsigned perc_storage_alteration : 1; | |
377 | unsigned perc_gpr_alt_unused : 1; | |
378 | unsigned perc_store_real_address : 1; | |
379 | unsigned : 3; | |
380 | unsigned atmid_psw_bit_31 : 1; | |
381 | unsigned atmid_validity_bit : 1; | |
382 | unsigned atmid_psw_bit_32 : 1; | |
383 | unsigned atmid_psw_bit_5 : 1; | |
384 | unsigned atmid_psw_bit_16 : 1; | |
385 | unsigned atmid_psw_bit_17 : 1; | |
386 | unsigned si : 2; | |
387 | unsigned long address; | |
388 | unsigned : 4; | |
389 | unsigned access_id : 4; | |
390 | } per_lowcore_bits; | |
391 | ||
392 | typedef struct | |
393 | { | |
394 | union { | |
395 | per_cr_words words; | |
396 | per_cr_bits bits; | |
397 | } control_regs; | |
398 | /* | |
399 | * Use these flags instead of setting em_instruction_fetch | |
400 | * directly they are used so that single stepping can be | |
401 | * switched on & off while not affecting other tracing | |
402 | */ | |
403 | unsigned single_step : 1; | |
404 | unsigned instruction_fetch : 1; | |
405 | unsigned : 30; | |
406 | /* | |
407 | * These addresses are copied into cr10 & cr11 if single | |
408 | * stepping is switched off | |
409 | */ | |
410 | unsigned long starting_addr; | |
411 | unsigned long ending_addr; | |
412 | union { | |
413 | per_lowcore_words words; | |
414 | per_lowcore_bits bits; | |
415 | } lowcore; | |
416 | } per_struct; | |
417 | ||
418 | typedef struct | |
419 | { | |
420 | unsigned int len; | |
421 | unsigned long kernel_addr; | |
422 | unsigned long process_addr; | |
423 | } ptrace_area; | |
424 | ||
425 | /* | |
426 | * S/390 specific non posix ptrace requests. I chose unusual values so | |
427 | * they are unlikely to clash with future ptrace definitions. | |
428 | */ | |
429 | #define PTRACE_PEEKUSR_AREA 0x5000 | |
430 | #define PTRACE_POKEUSR_AREA 0x5001 | |
431 | #define PTRACE_PEEKTEXT_AREA 0x5002 | |
432 | #define PTRACE_PEEKDATA_AREA 0x5003 | |
433 | #define PTRACE_POKETEXT_AREA 0x5004 | |
434 | #define PTRACE_POKEDATA_AREA 0x5005 | |
435 | ||
436 | /* | |
437 | * PT_PROT definition is loosely based on hppa bsd definition in | |
438 | * gdb/hppab-nat.c | |
439 | */ | |
440 | #define PTRACE_PROT 21 | |
441 | ||
442 | typedef enum | |
443 | { | |
444 | ptprot_set_access_watchpoint, | |
445 | ptprot_set_write_watchpoint, | |
446 | ptprot_disable_watchpoint | |
447 | } ptprot_flags; | |
448 | ||
449 | typedef struct | |
450 | { | |
451 | unsigned long lowaddr; | |
452 | unsigned long hiaddr; | |
453 | ptprot_flags prot; | |
454 | } ptprot_area; | |
455 | ||
456 | /* Sequence of bytes for breakpoint illegal instruction. */ | |
457 | #define S390_BREAKPOINT {0x0,0x1} | |
458 | #define S390_BREAKPOINT_U16 ((__u16)0x0001) | |
459 | #define S390_SYSCALL_OPCODE ((__u16)0x0a00) | |
460 | #define S390_SYSCALL_SIZE 2 | |
461 | ||
462 | /* | |
463 | * The user_regs_struct defines the way the user registers are | |
464 | * store on the stack for signal handling. | |
465 | */ | |
466 | struct user_regs_struct | |
467 | { | |
468 | psw_t psw; | |
469 | unsigned long gprs[NUM_GPRS]; | |
470 | unsigned int acrs[NUM_ACRS]; | |
471 | unsigned long orig_gpr2; | |
472 | s390_fp_regs fp_regs; | |
473 | /* | |
474 | * These per registers are in here so that gdb can modify them | |
475 | * itself as there is no "official" ptrace interface for hardware | |
476 | * watchpoints. This is the way intel does it. | |
477 | */ | |
478 | per_struct per_info; | |
479 | unsigned long ieee_instruction_pointer; | |
480 | /* Used to give failing instruction back to user for ieee exceptions */ | |
481 | }; | |
482 | ||
483 | #ifdef __KERNEL__ | |
0ac30be4 RM |
484 | /* |
485 | * These are defined as per linux/ptrace.h, which see. | |
486 | */ | |
487 | #define arch_has_single_step() (1) | |
488 | struct task_struct; | |
489 | extern void user_enable_single_step(struct task_struct *); | |
490 | extern void user_disable_single_step(struct task_struct *); | |
491 | ||
1da177e4 LT |
492 | #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) |
493 | #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) | |
753c4dd6 | 494 | #define user_stack_pointer(regs)((regs)->gprs[15]) |
b3f827cb | 495 | #define regs_return_value(regs)((regs)->gprs[2]) |
1da177e4 LT |
496 | #define profile_pc(regs) instruction_pointer(regs) |
497 | extern void show_regs(struct pt_regs * regs); | |
dc74d7f9 | 498 | #endif /* __KERNEL__ */ |
1da177e4 LT |
499 | #endif /* __ASSEMBLY__ */ |
500 | ||
501 | #endif /* _S390_PTRACE_H */ |