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1394f032 | 1 | /* |
96f1050d | 2 | * Copyright 2004-2009 Analog Devices Inc. |
1394f032 | 3 | * |
96f1050d | 4 | * Licensed under the GPL-2 or later |
1394f032 BW |
5 | */ |
6 | ||
70f12567 | 7 | #include <linux/bug.h> |
1f83b8f1 MF |
8 | #include <linux/uaccess.h> |
9 | #include <linux/interrupt.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/kallsyms.h> | |
d31c5ab1 | 12 | #include <linux/fs.h> |
8feae131 | 13 | #include <linux/rbtree.h> |
1394f032 BW |
14 | #include <asm/traps.h> |
15 | #include <asm/cacheflush.h> | |
f4585a08 | 16 | #include <asm/cplb.h> |
e56e03b0 | 17 | #include <asm/dma.h> |
1394f032 | 18 | #include <asm/blackfin.h> |
1394f032 | 19 | #include <asm/irq_handler.h> |
d8f66c8c | 20 | #include <linux/irq.h> |
669b792c | 21 | #include <asm/trace.h> |
226eb1ef | 22 | #include <asm/fixed_code.h> |
1394f032 BW |
23 | |
24 | #ifdef CONFIG_KGDB | |
1394f032 | 25 | # include <linux/kgdb.h> |
226eb1ef RG |
26 | |
27 | # define CHK_DEBUGGER_TRAP() \ | |
28 | do { \ | |
a5ac0129 | 29 | kgdb_handle_exception(trapnr, sig, info.si_code, fp); \ |
226eb1ef RG |
30 | } while (0) |
31 | # define CHK_DEBUGGER_TRAP_MAYBE() \ | |
32 | do { \ | |
33 | if (kgdb_connected) \ | |
34 | CHK_DEBUGGER_TRAP(); \ | |
35 | } while (0) | |
36 | #else | |
37 | # define CHK_DEBUGGER_TRAP() do { } while (0) | |
38 | # define CHK_DEBUGGER_TRAP_MAYBE() do { } while (0) | |
1394f032 BW |
39 | #endif |
40 | ||
9f06c38f | 41 | |
4ee1c453 | 42 | #ifdef CONFIG_DEBUG_VERBOSE |
9f06c38f RG |
43 | #define verbose_printk(fmt, arg...) \ |
44 | printk(fmt, ##arg) | |
45 | #else | |
46 | #define verbose_printk(fmt, arg...) \ | |
47 | ({ if (0) printk(fmt, ##arg); 0; }) | |
48 | #endif | |
49 | ||
81f7f456 RG |
50 | #if defined(CONFIG_DEBUG_MMRS) || defined(CONFIG_DEBUG_MMRS_MODULE) |
51 | u32 last_seqstat; | |
52 | #ifdef CONFIG_DEBUG_MMRS_MODULE | |
53 | EXPORT_SYMBOL(last_seqstat); | |
54 | #endif | |
55 | #endif | |
56 | ||
1394f032 BW |
57 | /* Initiate the event table handler */ |
58 | void __init trap_init(void) | |
59 | { | |
60 | CSYNC(); | |
61 | bfin_write_EVT3(trap); | |
62 | CSYNC(); | |
63 | } | |
64 | ||
226eb1ef | 65 | static void decode_address(char *buf, unsigned long address) |
1394f032 | 66 | { |
9f06c38f | 67 | #ifdef CONFIG_DEBUG_VERBOSE |
1394f032 BW |
68 | struct task_struct *p; |
69 | struct mm_struct *mm; | |
885be03b | 70 | unsigned long flags, offset; |
904656cd | 71 | unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); |
8feae131 | 72 | struct rb_node *n; |
1394f032 BW |
73 | |
74 | #ifdef CONFIG_KALLSYMS | |
8a0e6656 | 75 | unsigned long symsize; |
1394f032 BW |
76 | const char *symname; |
77 | char *modname; | |
78 | char *delim = ":"; | |
79 | char namebuf[128]; | |
18070dd6 MF |
80 | #endif |
81 | ||
82 | buf += sprintf(buf, "<0x%08lx> ", address); | |
1394f032 | 83 | |
18070dd6 | 84 | #ifdef CONFIG_KALLSYMS |
1394f032 BW |
85 | /* look up the address and see if we are in kernel space */ |
86 | symname = kallsyms_lookup(address, &symsize, &offset, &modname, namebuf); | |
87 | ||
88 | if (symname) { | |
89 | /* yeah! kernel space! */ | |
90 | if (!modname) | |
91 | modname = delim = ""; | |
18070dd6 MF |
92 | sprintf(buf, "{ %s%s%s%s + 0x%lx }", |
93 | delim, modname, delim, symname, | |
94 | (unsigned long)offset); | |
885be03b | 95 | return; |
1394f032 BW |
96 | } |
97 | #endif | |
98 | ||
226eb1ef | 99 | if (address >= FIXED_CODE_START && address < FIXED_CODE_END) { |
18070dd6 MF |
100 | /* Problem in fixed code section? */ |
101 | strcat(buf, "/* Maybe fixed code section */"); | |
102 | return; | |
103 | ||
104 | } else if (address < CONFIG_BOOT_LOAD) { | |
105 | /* Problem somewhere before the kernel start address */ | |
106 | strcat(buf, "/* Maybe null pointer? */"); | |
107 | return; | |
108 | ||
109 | } else if (address >= COREMMR_BASE) { | |
110 | strcat(buf, "/* core mmrs */"); | |
111 | return; | |
112 | ||
113 | } else if (address >= SYSMMR_BASE) { | |
114 | strcat(buf, "/* system mmrs */"); | |
226eb1ef | 115 | return; |
226eb1ef | 116 | |
18070dd6 MF |
117 | } else if (address >= L1_ROM_START && address < L1_ROM_START + L1_ROM_LENGTH) { |
118 | strcat(buf, "/* on-chip L1 ROM */"); | |
226eb1ef RG |
119 | return; |
120 | } | |
121 | ||
1394f032 BW |
122 | /* looks like we're off in user-land, so let's walk all the |
123 | * mappings of all our processes and see if we can't be a whee | |
124 | * bit more specific | |
125 | */ | |
885be03b | 126 | write_lock_irqsave(&tasklist_lock, flags); |
1394f032 | 127 | for_each_process(p) { |
904656cd | 128 | mm = (in_atomic ? p->mm : get_task_mm(p)); |
1394f032 BW |
129 | if (!mm) |
130 | continue; | |
131 | ||
8feae131 DH |
132 | for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) { |
133 | struct vm_area_struct *vma; | |
134 | ||
135 | vma = rb_entry(n, struct vm_area_struct, vm_rb); | |
1394f032 BW |
136 | |
137 | if (address >= vma->vm_start && address < vma->vm_end) { | |
cf28b486 | 138 | char _tmpbuf[256]; |
1394f032 BW |
139 | char *name = p->comm; |
140 | struct file *file = vma->vm_file; | |
cf28b486 | 141 | |
6a0bfff4 TP |
142 | if (file) { |
143 | char *d_name = d_path(&file->f_path, _tmpbuf, | |
cf28b486 | 144 | sizeof(_tmpbuf)); |
6a0bfff4 TP |
145 | if (!IS_ERR(d_name)) |
146 | name = d_name; | |
147 | } | |
1394f032 | 148 | |
8a0e6656 MF |
149 | /* FLAT does not have its text aligned to the start of |
150 | * the map while FDPIC ELF does ... | |
151 | */ | |
7f1c9068 RG |
152 | |
153 | /* before we can check flat/fdpic, we need to | |
154 | * make sure current is valid | |
155 | */ | |
156 | if ((unsigned long)current >= FIXED_CODE_START && | |
157 | !((unsigned long)current & 0x3)) { | |
158 | if (current->mm && | |
159 | (address > current->mm->start_code) && | |
160 | (address < current->mm->end_code)) | |
161 | offset = address - current->mm->start_code; | |
162 | else | |
163 | offset = (address - vma->vm_start) + | |
164 | (vma->vm_pgoff << PAGE_SHIFT); | |
165 | ||
18070dd6 | 166 | sprintf(buf, "[ %s + 0x%lx ]", name, offset); |
7f1c9068 | 167 | } else |
18070dd6 MF |
168 | sprintf(buf, "[ %s vma:0x%lx-0x%lx]", |
169 | name, vma->vm_start, vma->vm_end); | |
7f1c9068 | 170 | |
904656cd | 171 | if (!in_atomic) |
885be03b | 172 | mmput(mm); |
7f1c9068 | 173 | |
18070dd6 MF |
174 | if (buf[0] == '\0') |
175 | sprintf(buf, "[ %s ] dynamic memory", name); | |
f09630bf | 176 | |
885be03b | 177 | goto done; |
1394f032 | 178 | } |
1394f032 | 179 | } |
904656cd | 180 | if (!in_atomic) |
885be03b | 181 | mmput(mm); |
1394f032 | 182 | } |
1394f032 BW |
183 | |
184 | /* we were unable to find this address anywhere */ | |
18070dd6 | 185 | sprintf(buf, "/* kernel dynamic memory */"); |
885be03b RG |
186 | |
187 | done: | |
188 | write_unlock_irqrestore(&tasklist_lock, flags); | |
9f06c38f RG |
189 | #else |
190 | sprintf(buf, " "); | |
191 | #endif | |
1394f032 BW |
192 | } |
193 | ||
2ebcade5 RG |
194 | asmlinkage void double_fault_c(struct pt_regs *fp) |
195 | { | |
a0cab656 RG |
196 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
197 | int j; | |
198 | trace_buffer_save(j); | |
199 | #endif | |
200 | ||
226eb1ef RG |
201 | console_verbose(); |
202 | oops_in_progress = 1; | |
9f06c38f | 203 | #ifdef CONFIG_DEBUG_VERBOSE |
ad361c98 | 204 | printk(KERN_EMERG "Double Fault\n"); |
0c7a6b21 RG |
205 | #ifdef CONFIG_DEBUG_DOUBLEFAULT_PRINT |
206 | if (((long)fp->seqstat & SEQSTAT_EXCAUSE) == VEC_UNCOV) { | |
b6dbde27 | 207 | unsigned int cpu = raw_smp_processor_id(); |
0c7a6b21 | 208 | char buf[150]; |
01b9f4b0 | 209 | decode_address(buf, cpu_pda[cpu].retx_doublefault); |
0c7a6b21 | 210 | printk(KERN_EMERG "While handling exception (EXCAUSE = 0x%x) at %s:\n", |
01b9f4b0 GY |
211 | (unsigned int)cpu_pda[cpu].seqstat_doublefault & SEQSTAT_EXCAUSE, buf); |
212 | decode_address(buf, cpu_pda[cpu].dcplb_doublefault_addr); | |
0c7a6b21 | 213 | printk(KERN_NOTICE " DCPLB_FAULT_ADDR: %s\n", buf); |
01b9f4b0 | 214 | decode_address(buf, cpu_pda[cpu].icplb_doublefault_addr); |
0c7a6b21 RG |
215 | printk(KERN_NOTICE " ICPLB_FAULT_ADDR: %s\n", buf); |
216 | ||
217 | decode_address(buf, fp->retx); | |
8f65873e | 218 | printk(KERN_NOTICE "The instruction at %s caused a double exception\n", buf); |
0c7a6b21 RG |
219 | } else |
220 | #endif | |
221 | { | |
222 | dump_bfin_process(fp); | |
223 | dump_bfin_mem(fp); | |
224 | show_regs(fp); | |
a0cab656 | 225 | dump_bfin_trace_buffer(); |
0c7a6b21 | 226 | } |
9f06c38f | 227 | #endif |
d8804adf | 228 | panic("Double Fault - unrecoverable event"); |
2ebcade5 RG |
229 | |
230 | } | |
231 | ||
82bd1d7d MF |
232 | static int kernel_mode_regs(struct pt_regs *regs) |
233 | { | |
234 | return regs->ipend & 0xffc0; | |
235 | } | |
236 | ||
c4baebf2 | 237 | asmlinkage notrace void trap_c(struct pt_regs *fp) |
1394f032 | 238 | { |
518039bc RG |
239 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
240 | int j; | |
8f65873e GY |
241 | #endif |
242 | #ifdef CONFIG_DEBUG_HUNT_FOR_ZERO | |
b6dbde27 | 243 | unsigned int cpu = raw_smp_processor_id(); |
518039bc | 244 | #endif |
82bd1d7d | 245 | const char *strerror = NULL; |
518039bc | 246 | int sig = 0; |
1394f032 BW |
247 | siginfo_t info; |
248 | unsigned long trapnr = fp->seqstat & SEQSTAT_EXCAUSE; | |
249 | ||
226eb1ef | 250 | trace_buffer_save(j); |
81f7f456 RG |
251 | #if defined(CONFIG_DEBUG_MMRS) || defined(CONFIG_DEBUG_MMRS_MODULE) |
252 | last_seqstat = (u32)fp->seqstat; | |
253 | #endif | |
226eb1ef RG |
254 | |
255 | /* Important - be very careful dereferncing pointers - will lead to | |
256 | * double faults if the stack has become corrupt | |
257 | */ | |
258 | ||
1394f032 BW |
259 | /* trap_c() will be called for exceptions. During exceptions |
260 | * processing, the pc value should be set with retx value. | |
261 | * With this change we can cleanup some code in signal.c- TODO | |
262 | */ | |
263 | fp->orig_pc = fp->retx; | |
264 | /* printk("exception: 0x%x, ipend=%x, reti=%x, retx=%x\n", | |
265 | trapnr, fp->ipend, fp->pc, fp->retx); */ | |
266 | ||
267 | /* send the appropriate signal to the user program */ | |
268 | switch (trapnr) { | |
269 | ||
270 | /* This table works in conjuction with the one in ./mach-common/entry.S | |
271 | * Some exceptions are handled there (in assembly, in exception space) | |
272 | * Some are handled here, (in C, in interrupt space) | |
273 | * Some, like CPLB, are handled in both, where the normal path is | |
274 | * handled in assembly/exception space, and the error path is handled | |
275 | * here | |
276 | */ | |
277 | ||
278 | /* 0x00 - Linux Syscall, getting here is an error */ | |
279 | /* 0x01 - userspace gdb breakpoint, handled here */ | |
280 | case VEC_EXCPT01: | |
281 | info.si_code = TRAP_ILLTRAP; | |
282 | sig = SIGTRAP; | |
283 | CHK_DEBUGGER_TRAP_MAYBE(); | |
284 | /* Check if this is a breakpoint in kernel space */ | |
82bd1d7d | 285 | if (kernel_mode_regs(fp)) |
6510a20e | 286 | goto traps_done; |
1394f032 BW |
287 | else |
288 | break; | |
9401e618 | 289 | /* 0x03 - User Defined, userspace stack overflow */ |
1394f032 BW |
290 | case VEC_EXCPT03: |
291 | info.si_code = SEGV_STACKFLOW; | |
292 | sig = SIGSEGV; | |
82bd1d7d | 293 | strerror = KERN_NOTICE EXC_0x03(KERN_NOTICE); |
a5ac0129 | 294 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 | 295 | break; |
27707d3e SZ |
296 | /* 0x02 - KGDB initial connection and break signal trap */ |
297 | case VEC_EXCPT02: | |
298 | #ifdef CONFIG_KGDB | |
299 | info.si_code = TRAP_ILLTRAP; | |
300 | sig = SIGTRAP; | |
301 | CHK_DEBUGGER_TRAP(); | |
6510a20e | 302 | goto traps_done; |
27707d3e | 303 | #endif |
5c64e0d5 RG |
304 | /* 0x04 - User Defined */ |
305 | /* 0x05 - User Defined */ | |
306 | /* 0x06 - User Defined */ | |
307 | /* 0x07 - User Defined */ | |
308 | /* 0x08 - User Defined */ | |
309 | /* 0x09 - User Defined */ | |
310 | /* 0x0A - User Defined */ | |
311 | /* 0x0B - User Defined */ | |
312 | /* 0x0C - User Defined */ | |
313 | /* 0x0D - User Defined */ | |
314 | /* 0x0E - User Defined */ | |
315 | /* 0x0F - User Defined */ | |
27707d3e | 316 | /* If we got here, it is most likely that someone was trying to use a |
5c64e0d5 RG |
317 | * custom exception handler, and it is not actually installed properly |
318 | */ | |
319 | case VEC_EXCPT04 ... VEC_EXCPT15: | |
320 | info.si_code = ILL_ILLPARAOP; | |
321 | sig = SIGILL; | |
82bd1d7d | 322 | strerror = KERN_NOTICE EXC_0x04(KERN_NOTICE); |
5c64e0d5 RG |
323 | CHK_DEBUGGER_TRAP_MAYBE(); |
324 | break; | |
1394f032 BW |
325 | /* 0x10 HW Single step, handled here */ |
326 | case VEC_STEP: | |
327 | info.si_code = TRAP_STEP; | |
328 | sig = SIGTRAP; | |
329 | CHK_DEBUGGER_TRAP_MAYBE(); | |
330 | /* Check if this is a single step in kernel space */ | |
82bd1d7d | 331 | if (kernel_mode_regs(fp)) |
6510a20e | 332 | goto traps_done; |
1394f032 BW |
333 | else |
334 | break; | |
335 | /* 0x11 - Trace Buffer Full, handled here */ | |
336 | case VEC_OVFLOW: | |
337 | info.si_code = TRAP_TRACEFLOW; | |
338 | sig = SIGTRAP; | |
82bd1d7d | 339 | strerror = KERN_NOTICE EXC_0x11(KERN_NOTICE); |
a5ac0129 | 340 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
341 | break; |
342 | /* 0x12 - Reserved, Caught by default */ | |
343 | /* 0x13 - Reserved, Caught by default */ | |
344 | /* 0x14 - Reserved, Caught by default */ | |
345 | /* 0x15 - Reserved, Caught by default */ | |
346 | /* 0x16 - Reserved, Caught by default */ | |
347 | /* 0x17 - Reserved, Caught by default */ | |
348 | /* 0x18 - Reserved, Caught by default */ | |
349 | /* 0x19 - Reserved, Caught by default */ | |
350 | /* 0x1A - Reserved, Caught by default */ | |
351 | /* 0x1B - Reserved, Caught by default */ | |
352 | /* 0x1C - Reserved, Caught by default */ | |
353 | /* 0x1D - Reserved, Caught by default */ | |
354 | /* 0x1E - Reserved, Caught by default */ | |
355 | /* 0x1F - Reserved, Caught by default */ | |
356 | /* 0x20 - Reserved, Caught by default */ | |
357 | /* 0x21 - Undefined Instruction, handled here */ | |
358 | case VEC_UNDEF_I: | |
70f12567 MF |
359 | #ifdef CONFIG_BUG |
360 | if (kernel_mode_regs(fp)) { | |
361 | switch (report_bug(fp->pc, fp)) { | |
362 | case BUG_TRAP_TYPE_NONE: | |
363 | break; | |
364 | case BUG_TRAP_TYPE_WARN: | |
365 | dump_bfin_trace_buffer(); | |
366 | fp->pc += 2; | |
367 | goto traps_done; | |
368 | case BUG_TRAP_TYPE_BUG: | |
369 | /* call to panic() will dump trace, and it is | |
370 | * off at this point, so it won't be clobbered | |
371 | */ | |
372 | panic("BUG()"); | |
373 | } | |
374 | } | |
375 | #endif | |
1394f032 BW |
376 | info.si_code = ILL_ILLOPC; |
377 | sig = SIGILL; | |
82bd1d7d | 378 | strerror = KERN_NOTICE EXC_0x21(KERN_NOTICE); |
a5ac0129 | 379 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
380 | break; |
381 | /* 0x22 - Illegal Instruction Combination, handled here */ | |
382 | case VEC_ILGAL_I: | |
383 | info.si_code = ILL_ILLPARAOP; | |
384 | sig = SIGILL; | |
82bd1d7d | 385 | strerror = KERN_NOTICE EXC_0x22(KERN_NOTICE); |
a5ac0129 | 386 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 | 387 | break; |
f26fbc48 | 388 | /* 0x23 - Data CPLB protection violation, handled here */ |
1394f032 BW |
389 | case VEC_CPLB_VL: |
390 | info.si_code = ILL_CPLB_VI; | |
36b84128 | 391 | sig = SIGSEGV; |
82bd1d7d | 392 | strerror = KERN_NOTICE EXC_0x23(KERN_NOTICE); |
a5ac0129 | 393 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
394 | break; |
395 | /* 0x24 - Data access misaligned, handled here */ | |
396 | case VEC_MISALI_D: | |
397 | info.si_code = BUS_ADRALN; | |
398 | sig = SIGBUS; | |
82bd1d7d | 399 | strerror = KERN_NOTICE EXC_0x24(KERN_NOTICE); |
a5ac0129 | 400 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
401 | break; |
402 | /* 0x25 - Unrecoverable Event, handled here */ | |
403 | case VEC_UNCOV: | |
404 | info.si_code = ILL_ILLEXCPT; | |
405 | sig = SIGILL; | |
82bd1d7d | 406 | strerror = KERN_NOTICE EXC_0x25(KERN_NOTICE); |
a5ac0129 | 407 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
408 | break; |
409 | /* 0x26 - Data CPLB Miss, normal case is handled in _cplb_hdr, | |
410 | error case is handled here */ | |
411 | case VEC_CPLB_M: | |
412 | info.si_code = BUS_ADRALN; | |
413 | sig = SIGBUS; | |
82bd1d7d | 414 | strerror = KERN_NOTICE EXC_0x26(KERN_NOTICE); |
1394f032 BW |
415 | break; |
416 | /* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero, handled here */ | |
417 | case VEC_CPLB_MHIT: | |
418 | info.si_code = ILL_CPLB_MULHIT; | |
1394f032 | 419 | sig = SIGSEGV; |
c6c6f75d | 420 | #ifdef CONFIG_DEBUG_HUNT_FOR_ZERO |
8f65873e | 421 | if (cpu_pda[cpu].dcplb_fault_addr < FIXED_CODE_START) |
82bd1d7d | 422 | strerror = KERN_NOTICE "NULL pointer access\n"; |
c6c6f75d | 423 | else |
1394f032 | 424 | #endif |
82bd1d7d | 425 | strerror = KERN_NOTICE EXC_0x27(KERN_NOTICE); |
a5ac0129 | 426 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
427 | break; |
428 | /* 0x28 - Emulation Watchpoint, handled here */ | |
429 | case VEC_WATCH: | |
430 | info.si_code = TRAP_WATCHPT; | |
431 | sig = SIGTRAP; | |
569a50ca | 432 | pr_debug(EXC_0x28(KERN_DEBUG)); |
1394f032 BW |
433 | CHK_DEBUGGER_TRAP_MAYBE(); |
434 | /* Check if this is a watchpoint in kernel space */ | |
82bd1d7d | 435 | if (kernel_mode_regs(fp)) |
6510a20e | 436 | goto traps_done; |
1394f032 BW |
437 | else |
438 | break; | |
439 | #ifdef CONFIG_BF535 | |
440 | /* 0x29 - Instruction fetch access error (535 only) */ | |
441 | case VEC_ISTRU_VL: /* ADSP-BF535 only (MH) */ | |
442 | info.si_code = BUS_OPFETCH; | |
443 | sig = SIGBUS; | |
82bd1d7d | 444 | strerror = KERN_NOTICE "BF535: VEC_ISTRU_VL\n"; |
a5ac0129 | 445 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
446 | break; |
447 | #else | |
448 | /* 0x29 - Reserved, Caught by default */ | |
449 | #endif | |
450 | /* 0x2A - Instruction fetch misaligned, handled here */ | |
451 | case VEC_MISALI_I: | |
452 | info.si_code = BUS_ADRALN; | |
453 | sig = SIGBUS; | |
82bd1d7d | 454 | strerror = KERN_NOTICE EXC_0x2A(KERN_NOTICE); |
a5ac0129 | 455 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 | 456 | break; |
f26fbc48 | 457 | /* 0x2B - Instruction CPLB protection violation, handled here */ |
1394f032 BW |
458 | case VEC_CPLB_I_VL: |
459 | info.si_code = ILL_CPLB_VI; | |
f26fbc48 | 460 | sig = SIGBUS; |
82bd1d7d | 461 | strerror = KERN_NOTICE EXC_0x2B(KERN_NOTICE); |
a5ac0129 | 462 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
463 | break; |
464 | /* 0x2C - Instruction CPLB miss, handled in _cplb_hdr */ | |
465 | case VEC_CPLB_I_M: | |
466 | info.si_code = ILL_CPLB_MISS; | |
467 | sig = SIGBUS; | |
82bd1d7d | 468 | strerror = KERN_NOTICE EXC_0x2C(KERN_NOTICE); |
1394f032 BW |
469 | break; |
470 | /* 0x2D - Instruction CPLB Multiple Hits, handled here */ | |
471 | case VEC_CPLB_I_MHIT: | |
472 | info.si_code = ILL_CPLB_MULHIT; | |
1394f032 | 473 | sig = SIGSEGV; |
c6c6f75d | 474 | #ifdef CONFIG_DEBUG_HUNT_FOR_ZERO |
8f65873e | 475 | if (cpu_pda[cpu].icplb_fault_addr < FIXED_CODE_START) |
82bd1d7d | 476 | strerror = KERN_NOTICE "Jump to NULL address\n"; |
c6c6f75d | 477 | else |
1394f032 | 478 | #endif |
82bd1d7d | 479 | strerror = KERN_NOTICE EXC_0x2D(KERN_NOTICE); |
a5ac0129 | 480 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
481 | break; |
482 | /* 0x2E - Illegal use of Supervisor Resource, handled here */ | |
483 | case VEC_ILL_RES: | |
484 | info.si_code = ILL_PRVOPC; | |
485 | sig = SIGILL; | |
82bd1d7d | 486 | strerror = KERN_NOTICE EXC_0x2E(KERN_NOTICE); |
a5ac0129 | 487 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
488 | break; |
489 | /* 0x2F - Reserved, Caught by default */ | |
490 | /* 0x30 - Reserved, Caught by default */ | |
491 | /* 0x31 - Reserved, Caught by default */ | |
492 | /* 0x32 - Reserved, Caught by default */ | |
493 | /* 0x33 - Reserved, Caught by default */ | |
494 | /* 0x34 - Reserved, Caught by default */ | |
495 | /* 0x35 - Reserved, Caught by default */ | |
496 | /* 0x36 - Reserved, Caught by default */ | |
497 | /* 0x37 - Reserved, Caught by default */ | |
498 | /* 0x38 - Reserved, Caught by default */ | |
499 | /* 0x39 - Reserved, Caught by default */ | |
500 | /* 0x3A - Reserved, Caught by default */ | |
501 | /* 0x3B - Reserved, Caught by default */ | |
502 | /* 0x3C - Reserved, Caught by default */ | |
503 | /* 0x3D - Reserved, Caught by default */ | |
504 | /* 0x3E - Reserved, Caught by default */ | |
505 | /* 0x3F - Reserved, Caught by default */ | |
13fe24f3 RG |
506 | case VEC_HWERR: |
507 | info.si_code = BUS_ADRALN; | |
508 | sig = SIGBUS; | |
509 | switch (fp->seqstat & SEQSTAT_HWERRCAUSE) { | |
510 | /* System MMR Error */ | |
511 | case (SEQSTAT_HWERRCAUSE_SYSTEM_MMR): | |
512 | info.si_code = BUS_ADRALN; | |
513 | sig = SIGBUS; | |
82bd1d7d | 514 | strerror = KERN_NOTICE HWC_x2(KERN_NOTICE); |
13fe24f3 RG |
515 | break; |
516 | /* External Memory Addressing Error */ | |
517 | case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR): | |
518 | info.si_code = BUS_ADRERR; | |
519 | sig = SIGBUS; | |
82bd1d7d | 520 | strerror = KERN_NOTICE HWC_x3(KERN_NOTICE); |
13fe24f3 RG |
521 | break; |
522 | /* Performance Monitor Overflow */ | |
523 | case (SEQSTAT_HWERRCAUSE_PERF_FLOW): | |
82bd1d7d | 524 | strerror = KERN_NOTICE HWC_x12(KERN_NOTICE); |
13fe24f3 RG |
525 | break; |
526 | /* RAISE 5 instruction */ | |
527 | case (SEQSTAT_HWERRCAUSE_RAISE_5): | |
528 | printk(KERN_NOTICE HWC_x18(KERN_NOTICE)); | |
529 | break; | |
530 | default: /* Reserved */ | |
531 | printk(KERN_NOTICE HWC_default(KERN_NOTICE)); | |
532 | break; | |
533 | } | |
a5ac0129 | 534 | CHK_DEBUGGER_TRAP_MAYBE(); |
13fe24f3 | 535 | break; |
5c64e0d5 RG |
536 | /* |
537 | * We should be handling all known exception types above, | |
538 | * if we get here we hit a reserved one, so panic | |
539 | */ | |
1394f032 | 540 | default: |
5c64e0d5 RG |
541 | info.si_code = ILL_ILLPARAOP; |
542 | sig = SIGILL; | |
9f06c38f | 543 | verbose_printk(KERN_EMERG "Caught Unhandled Exception, code = %08lx\n", |
1394f032 | 544 | (fp->seqstat & SEQSTAT_EXCAUSE)); |
a5ac0129 | 545 | CHK_DEBUGGER_TRAP_MAYBE(); |
1394f032 BW |
546 | break; |
547 | } | |
548 | ||
226eb1ef RG |
549 | BUG_ON(sig == 0); |
550 | ||
82bd1d7d MF |
551 | /* If the fault was caused by a kernel thread, or interrupt handler |
552 | * we will kernel panic, so the system reboots. | |
553 | */ | |
554 | if (kernel_mode_regs(fp) || (current && !current->mm)) { | |
555 | console_verbose(); | |
556 | oops_in_progress = 1; | |
82bd1d7d MF |
557 | } |
558 | ||
226eb1ef | 559 | if (sig != SIGTRAP) { |
15627bd3 MF |
560 | if (strerror) |
561 | verbose_printk(strerror); | |
562 | ||
49dce912 | 563 | dump_bfin_process(fp); |
b03b08ba | 564 | dump_bfin_mem(fp); |
49dce912 | 565 | show_regs(fp); |
226eb1ef RG |
566 | |
567 | /* Print out the trace buffer if it makes sense */ | |
568 | #ifndef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE | |
569 | if (trapnr == VEC_CPLB_I_M || trapnr == VEC_CPLB_M) | |
9f06c38f | 570 | verbose_printk(KERN_NOTICE "No trace since you do not have " |
ad361c98 | 571 | "CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE enabled\n\n"); |
226eb1ef RG |
572 | else |
573 | #endif | |
574 | dump_bfin_trace_buffer(); | |
f09630bf | 575 | |
226eb1ef | 576 | if (oops_in_progress) { |
f09630bf | 577 | /* Dump the current kernel stack */ |
ad361c98 | 578 | verbose_printk(KERN_NOTICE "Kernel Stack\n"); |
f09630bf | 579 | show_stack(current, NULL); |
aee3a292 | 580 | print_modules(); |
226eb1ef | 581 | #ifndef CONFIG_ACCESS_CHECK |
9f06c38f | 582 | verbose_printk(KERN_EMERG "Please turn on " |
90c7f468 | 583 | "CONFIG_ACCESS_CHECK\n"); |
226eb1ef | 584 | #endif |
1394f032 | 585 | panic("Kernel exception"); |
f09630bf | 586 | } else { |
4ee1c453 | 587 | #ifdef CONFIG_DEBUG_VERBOSE |
9f06c38f | 588 | unsigned long *stack; |
f09630bf RG |
589 | /* Dump the user space stack */ |
590 | stack = (unsigned long *)rdusp(); | |
9f06c38f | 591 | verbose_printk(KERN_NOTICE "Userspace Stack\n"); |
f09630bf | 592 | show_stack(NULL, stack); |
9f06c38f | 593 | #endif |
226eb1ef | 594 | } |
1394f032 | 595 | } |
fb322915 | 596 | |
6a01f230 YL |
597 | #ifdef CONFIG_IPIPE |
598 | if (!ipipe_trap_notify(fp->seqstat & 0x3f, fp)) | |
599 | #endif | |
600 | { | |
601 | info.si_signo = sig; | |
602 | info.si_errno = 0; | |
603 | info.si_addr = (void __user *)fp->pc; | |
604 | force_sig_info(sig, &info, current); | |
605 | } | |
1394f032 | 606 | |
0e4edcf0 | 607 | if ((ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8)) || |
f574a76a RG |
608 | (ANOMALY_05000281 && trapnr == VEC_HWERR) || |
609 | (ANOMALY_05000189 && (trapnr == VEC_CPLB_I_VL || trapnr == VEC_CPLB_VL))) | |
0acad8df RG |
610 | fp->pc = SAFE_USER_INSTRUCTION; |
611 | ||
6510a20e | 612 | traps_done: |
1394f032 | 613 | trace_buffer_restore(j); |
1394f032 BW |
614 | } |
615 | ||
616 | /* Typical exception handling routines */ | |
617 | ||
518039bc RG |
618 | #define EXPAND_LEN ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 256 - 1) |
619 | ||
f09630bf RG |
620 | /* |
621 | * Similar to get_user, do some address checking, then dereference | |
622 | * Return true on sucess, false on bad address | |
623 | */ | |
9f06c38f | 624 | static bool get_instruction(unsigned short *val, unsigned short *address) |
f09630bf | 625 | { |
e56e03b0 | 626 | unsigned long addr = (unsigned long)address; |
f09630bf RG |
627 | |
628 | /* Check for odd addresses */ | |
629 | if (addr & 0x1) | |
630 | return false; | |
631 | ||
e56e03b0 MF |
632 | /* MMR region will never have instructions */ |
633 | if (addr >= SYSMMR_BASE) | |
f09630bf RG |
634 | return false; |
635 | ||
e56e03b0 MF |
636 | switch (bfin_mem_access_type(addr, 2)) { |
637 | case BFIN_MEM_ACCESS_CORE: | |
638 | case BFIN_MEM_ACCESS_CORE_ONLY: | |
639 | *val = *address; | |
640 | return true; | |
641 | case BFIN_MEM_ACCESS_DMA: | |
642 | dma_memcpy(val, address, 2); | |
643 | return true; | |
644 | case BFIN_MEM_ACCESS_ITEST: | |
645 | isram_memcpy(val, address, 2); | |
646 | return true; | |
647 | default: /* invalid access */ | |
648 | return false; | |
f09630bf | 649 | } |
f09630bf RG |
650 | } |
651 | ||
36f649a5 | 652 | /* |
d3d0ac23 RG |
653 | * decode the instruction if we are printing out the trace, as it |
654 | * makes things easier to follow, without running it through objdump | |
655 | * These are the normal instructions which cause change of flow, which | |
656 | * would be at the source of the trace buffer | |
657 | */ | |
36f649a5 | 658 | #if defined(CONFIG_DEBUG_VERBOSE) && defined(CONFIG_DEBUG_BFIN_HWTRACE_ON) |
9f06c38f | 659 | static void decode_instruction(unsigned short *address) |
d3d0ac23 RG |
660 | { |
661 | unsigned short opcode; | |
662 | ||
663 | if (get_instruction(&opcode, address)) { | |
664 | if (opcode == 0x0010) | |
9f06c38f | 665 | verbose_printk("RTS"); |
d3d0ac23 | 666 | else if (opcode == 0x0011) |
9f06c38f | 667 | verbose_printk("RTI"); |
d3d0ac23 | 668 | else if (opcode == 0x0012) |
9f06c38f | 669 | verbose_printk("RTX"); |
0be58939 RG |
670 | else if (opcode == 0x0013) |
671 | verbose_printk("RTN"); | |
672 | else if (opcode == 0x0014) | |
673 | verbose_printk("RTE"); | |
674 | else if (opcode == 0x0025) | |
675 | verbose_printk("EMUEXCPT"); | |
676 | else if (opcode == 0x0040 && opcode <= 0x0047) | |
677 | verbose_printk("STI R%i", opcode & 7); | |
d3d0ac23 | 678 | else if (opcode >= 0x0050 && opcode <= 0x0057) |
9f06c38f | 679 | verbose_printk("JUMP (P%i)", opcode & 7); |
d3d0ac23 | 680 | else if (opcode >= 0x0060 && opcode <= 0x0067) |
9f06c38f | 681 | verbose_printk("CALL (P%i)", opcode & 7); |
d3d0ac23 | 682 | else if (opcode >= 0x0070 && opcode <= 0x0077) |
9f06c38f | 683 | verbose_printk("CALL (PC+P%i)", opcode & 7); |
d3d0ac23 | 684 | else if (opcode >= 0x0080 && opcode <= 0x0087) |
9f06c38f | 685 | verbose_printk("JUMP (PC+P%i)", opcode & 7); |
0be58939 RG |
686 | else if (opcode >= 0x0090 && opcode <= 0x009F) |
687 | verbose_printk("RAISE 0x%x", opcode & 0xF); | |
688 | else if (opcode >= 0x00A0 && opcode <= 0x00AF) | |
689 | verbose_printk("EXCPT 0x%x", opcode & 0xF); | |
d3d0ac23 | 690 | else if ((opcode >= 0x1000 && opcode <= 0x13FF) || (opcode >= 0x1800 && opcode <= 0x1BFF)) |
9f06c38f | 691 | verbose_printk("IF !CC JUMP"); |
d3d0ac23 | 692 | else if ((opcode >= 0x1400 && opcode <= 0x17ff) || (opcode >= 0x1c00 && opcode <= 0x1fff)) |
9f06c38f | 693 | verbose_printk("IF CC JUMP"); |
d3d0ac23 | 694 | else if (opcode >= 0x2000 && opcode <= 0x2fff) |
9f06c38f | 695 | verbose_printk("JUMP.S"); |
d3d0ac23 | 696 | else if (opcode >= 0xe080 && opcode <= 0xe0ff) |
9f06c38f | 697 | verbose_printk("LSETUP"); |
d3d0ac23 | 698 | else if (opcode >= 0xe200 && opcode <= 0xe2ff) |
9f06c38f | 699 | verbose_printk("JUMP.L"); |
d3d0ac23 | 700 | else if (opcode >= 0xe300 && opcode <= 0xe3ff) |
9f06c38f | 701 | verbose_printk("CALL pcrel"); |
d3d0ac23 | 702 | else |
9f06c38f | 703 | verbose_printk("0x%04x", opcode); |
d3d0ac23 RG |
704 | } |
705 | ||
706 | } | |
9f06c38f | 707 | #endif |
d3d0ac23 | 708 | |
1394f032 BW |
709 | void dump_bfin_trace_buffer(void) |
710 | { | |
9f06c38f | 711 | #ifdef CONFIG_DEBUG_VERBOSE |
518039bc RG |
712 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
713 | int tflags, i = 0; | |
226eb1ef | 714 | char buf[150]; |
d3d0ac23 | 715 | unsigned short *addr; |
518039bc RG |
716 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
717 | int j, index; | |
718 | #endif | |
719 | ||
1394f032 BW |
720 | trace_buffer_save(tflags); |
721 | ||
226eb1ef | 722 | printk(KERN_NOTICE "Hardware Trace:\n"); |
518039bc | 723 | |
d3d0ac23 RG |
724 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
725 | printk(KERN_NOTICE "WARNING: Expanded trace turned on - can not trace exceptions\n"); | |
726 | #endif | |
727 | ||
1394f032 | 728 | if (likely(bfin_read_TBUFSTAT() & TBUFCNT)) { |
518039bc | 729 | for (; bfin_read_TBUFSTAT() & TBUFCNT; i++) { |
226eb1ef RG |
730 | decode_address(buf, (unsigned long)bfin_read_TBUF()); |
731 | printk(KERN_NOTICE "%4i Target : %s\n", i, buf); | |
f09630bf RG |
732 | addr = (unsigned short *)bfin_read_TBUF(); |
733 | decode_address(buf, (unsigned long)addr); | |
734 | printk(KERN_NOTICE " Source : %s ", buf); | |
d3d0ac23 | 735 | decode_instruction(addr); |
f09630bf | 736 | printk("\n"); |
1394f032 BW |
737 | } |
738 | } | |
739 | ||
518039bc RG |
740 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
741 | if (trace_buff_offset) | |
d3d0ac23 | 742 | index = trace_buff_offset / 4; |
518039bc RG |
743 | else |
744 | index = EXPAND_LEN; | |
745 | ||
746 | j = (1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 128; | |
747 | while (j) { | |
226eb1ef RG |
748 | decode_address(buf, software_trace_buff[index]); |
749 | printk(KERN_NOTICE "%4i Target : %s\n", i, buf); | |
518039bc RG |
750 | index -= 1; |
751 | if (index < 0 ) | |
752 | index = EXPAND_LEN; | |
226eb1ef | 753 | decode_address(buf, software_trace_buff[index]); |
d3d0ac23 RG |
754 | printk(KERN_NOTICE " Source : %s ", buf); |
755 | decode_instruction((unsigned short *)software_trace_buff[index]); | |
756 | printk("\n"); | |
518039bc RG |
757 | index -= 1; |
758 | if (index < 0) | |
759 | index = EXPAND_LEN; | |
518039bc RG |
760 | j--; |
761 | i++; | |
762 | } | |
763 | #endif | |
764 | ||
1394f032 | 765 | trace_buffer_restore(tflags); |
518039bc | 766 | #endif |
9f06c38f | 767 | #endif |
1394f032 BW |
768 | } |
769 | EXPORT_SYMBOL(dump_bfin_trace_buffer); | |
770 | ||
70f12567 MF |
771 | #ifdef CONFIG_BUG |
772 | int is_valid_bugaddr(unsigned long addr) | |
773 | { | |
774 | unsigned short opcode; | |
775 | ||
776 | if (!get_instruction(&opcode, (unsigned short *)addr)) | |
777 | return 0; | |
778 | ||
779 | return opcode == BFIN_BUG_OPCODE; | |
780 | } | |
781 | #endif | |
782 | ||
f09630bf RG |
783 | /* |
784 | * Checks to see if the address pointed to is either a | |
785 | * 16-bit CALL instruction, or a 32-bit CALL instruction | |
786 | */ | |
9f06c38f | 787 | static bool is_bfin_call(unsigned short *addr) |
1394f032 | 788 | { |
f09630bf RG |
789 | unsigned short opcode = 0, *ins_addr; |
790 | ins_addr = (unsigned short *)addr; | |
1394f032 | 791 | |
f09630bf RG |
792 | if (!get_instruction(&opcode, ins_addr)) |
793 | return false; | |
1394f032 | 794 | |
f09630bf RG |
795 | if ((opcode >= 0x0060 && opcode <= 0x0067) || |
796 | (opcode >= 0x0070 && opcode <= 0x0077)) | |
797 | return true; | |
798 | ||
799 | ins_addr--; | |
800 | if (!get_instruction(&opcode, ins_addr)) | |
801 | return false; | |
1394f032 | 802 | |
f09630bf RG |
803 | if (opcode >= 0xE300 && opcode <= 0xE3FF) |
804 | return true; | |
805 | ||
806 | return false; | |
807 | ||
808 | } | |
9f06c38f | 809 | |
1394f032 BW |
810 | void show_stack(struct task_struct *task, unsigned long *stack) |
811 | { | |
9f06c38f | 812 | #ifdef CONFIG_PRINTK |
f09630bf RG |
813 | unsigned int *addr, *endstack, *fp = 0, *frame; |
814 | unsigned short *ins_addr; | |
815 | char buf[150]; | |
816 | unsigned int i, j, ret_addr, frame_no = 0; | |
1394f032 | 817 | |
f09630bf RG |
818 | /* |
819 | * If we have been passed a specific stack, use that one otherwise | |
820 | * if we have been passed a task structure, use that, otherwise | |
821 | * use the stack of where the variable "stack" exists | |
1394f032 BW |
822 | */ |
823 | ||
f09630bf RG |
824 | if (stack == NULL) { |
825 | if (task) { | |
826 | /* We know this is a kernel stack, so this is the start/end */ | |
1394f032 | 827 | stack = (unsigned long *)task->thread.ksp; |
f09630bf RG |
828 | endstack = (unsigned int *)(((unsigned int)(stack) & ~(THREAD_SIZE - 1)) + THREAD_SIZE); |
829 | } else { | |
830 | /* print out the existing stack info */ | |
1394f032 | 831 | stack = (unsigned long *)&stack; |
f09630bf RG |
832 | endstack = (unsigned int *)PAGE_ALIGN((unsigned int)stack); |
833 | } | |
834 | } else | |
835 | endstack = (unsigned int *)PAGE_ALIGN((unsigned int)stack); | |
836 | ||
9f06c38f | 837 | printk(KERN_NOTICE "Stack info:\n"); |
f09630bf | 838 | decode_address(buf, (unsigned int)stack); |
9f06c38f RG |
839 | printk(KERN_NOTICE " SP: [0x%p] %s\n", stack, buf); |
840 | ||
a0cab656 RG |
841 | if (!access_ok(VERIFY_READ, stack, (unsigned int)endstack - (unsigned int)stack)) { |
842 | printk(KERN_NOTICE "Invalid stack pointer\n"); | |
843 | return; | |
844 | } | |
845 | ||
f09630bf | 846 | /* First thing is to look for a frame pointer */ |
881eb621 | 847 | for (addr = (unsigned int *)((unsigned int)stack & ~0xF); addr < endstack; addr++) { |
f09630bf RG |
848 | if (*addr & 0x1) |
849 | continue; | |
850 | ins_addr = (unsigned short *)*addr; | |
851 | ins_addr--; | |
852 | if (is_bfin_call(ins_addr)) | |
853 | fp = addr - 1; | |
854 | ||
855 | if (fp) { | |
856 | /* Let's check to see if it is a frame pointer */ | |
881eb621 JZ |
857 | while (fp >= (addr - 1) && fp < endstack |
858 | && fp && ((unsigned int) fp & 0x3) == 0) | |
f09630bf RG |
859 | fp = (unsigned int *)*fp; |
860 | if (fp == 0 || fp == endstack) { | |
861 | fp = addr - 1; | |
862 | break; | |
863 | } | |
864 | fp = 0; | |
865 | } | |
1394f032 | 866 | } |
f09630bf RG |
867 | if (fp) { |
868 | frame = fp; | |
b339dc79 | 869 | printk(KERN_NOTICE " FP: (0x%p)\n", fp); |
f09630bf RG |
870 | } else |
871 | frame = 0; | |
1394f032 | 872 | |
f09630bf RG |
873 | /* |
874 | * Now that we think we know where things are, we | |
875 | * walk the stack again, this time printing things out | |
876 | * incase there is no frame pointer, we still look for | |
877 | * valid return addresses | |
878 | */ | |
1394f032 | 879 | |
f09630bf RG |
880 | /* First time print out data, next time, print out symbols */ |
881 | for (j = 0; j <= 1; j++) { | |
882 | if (j) | |
883 | printk(KERN_NOTICE "Return addresses in stack:\n"); | |
884 | else | |
885 | printk(KERN_NOTICE " Memory from 0x%08lx to %p", ((long unsigned int)stack & ~0xF), endstack); | |
886 | ||
887 | fp = frame; | |
888 | frame_no = 0; | |
889 | ||
890 | for (addr = (unsigned int *)((unsigned int)stack & ~0xF), i = 0; | |
407505dc | 891 | addr < endstack; addr++, i++) { |
f09630bf RG |
892 | |
893 | ret_addr = 0; | |
894 | if (!j && i % 8 == 0) | |
ad361c98 | 895 | printk(KERN_NOTICE "%p:",addr); |
f09630bf RG |
896 | |
897 | /* if it is an odd address, or zero, just skip it */ | |
898 | if (*addr & 0x1 || !*addr) | |
899 | goto print; | |
900 | ||
901 | ins_addr = (unsigned short *)*addr; | |
902 | ||
903 | /* Go back one instruction, and see if it is a CALL */ | |
904 | ins_addr--; | |
905 | ret_addr = is_bfin_call(ins_addr); | |
906 | print: | |
907 | if (!j && stack == (unsigned long *)addr) | |
908 | printk("[%08x]", *addr); | |
909 | else if (ret_addr) | |
910 | if (j) { | |
911 | decode_address(buf, (unsigned int)*addr); | |
912 | if (frame == addr) { | |
913 | printk(KERN_NOTICE " frame %2i : %s\n", frame_no, buf); | |
914 | continue; | |
915 | } | |
916 | printk(KERN_NOTICE " address : %s\n", buf); | |
917 | } else | |
918 | printk("<%08x>", *addr); | |
919 | else if (fp == addr) { | |
920 | if (j) | |
921 | frame = addr+1; | |
922 | else | |
923 | printk("(%08x)", *addr); | |
924 | ||
925 | fp = (unsigned int *)*addr; | |
926 | frame_no++; | |
927 | ||
928 | } else if (!j) | |
929 | printk(" %08x ", *addr); | |
930 | } | |
931 | if (!j) | |
932 | printk("\n"); | |
1394f032 | 933 | } |
9f06c38f | 934 | #endif |
1394f032 | 935 | } |
bc569f1a | 936 | EXPORT_SYMBOL(show_stack); |
1394f032 BW |
937 | |
938 | void dump_stack(void) | |
939 | { | |
940 | unsigned long stack; | |
518039bc | 941 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
1394f032 | 942 | int tflags; |
518039bc | 943 | #endif |
1394f032 BW |
944 | trace_buffer_save(tflags); |
945 | dump_bfin_trace_buffer(); | |
946 | show_stack(current, &stack); | |
947 | trace_buffer_restore(tflags); | |
948 | } | |
1394f032 BW |
949 | EXPORT_SYMBOL(dump_stack); |
950 | ||
49dce912 | 951 | void dump_bfin_process(struct pt_regs *fp) |
1394f032 | 952 | { |
9f06c38f | 953 | #ifdef CONFIG_DEBUG_VERBOSE |
49dce912 MF |
954 | /* We should be able to look at fp->ipend, but we don't push it on the |
955 | * stack all the time, so do this until we fix that */ | |
956 | unsigned int context = bfin_read_IPEND(); | |
957 | ||
958 | if (oops_in_progress) | |
9f06c38f | 959 | verbose_printk(KERN_EMERG "Kernel OOPS in progress\n"); |
49dce912 | 960 | |
b03b08ba | 961 | if (context & 0x0020 && (fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) |
9f06c38f | 962 | verbose_printk(KERN_NOTICE "HW Error context\n"); |
b03b08ba | 963 | else if (context & 0x0020) |
9f06c38f | 964 | verbose_printk(KERN_NOTICE "Deferred Exception context\n"); |
49dce912 | 965 | else if (context & 0x3FC0) |
9f06c38f | 966 | verbose_printk(KERN_NOTICE "Interrupt context\n"); |
49dce912 | 967 | else if (context & 0x4000) |
9f06c38f | 968 | verbose_printk(KERN_NOTICE "Deferred Interrupt context\n"); |
49dce912 | 969 | else if (context & 0x8000) |
9f06c38f | 970 | verbose_printk(KERN_NOTICE "Kernel process context\n"); |
49dce912 | 971 | |
9a62ca40 RG |
972 | /* Because we are crashing, and pointers could be bad, we check things |
973 | * pretty closely before we use them | |
974 | */ | |
7f1c9068 RG |
975 | if ((unsigned long)current >= FIXED_CODE_START && |
976 | !((unsigned long)current & 0x3) && current->pid) { | |
9f06c38f | 977 | verbose_printk(KERN_NOTICE "CURRENT PROCESS:\n"); |
9a62ca40 | 978 | if (current->comm >= (char *)FIXED_CODE_START) |
9f06c38f | 979 | verbose_printk(KERN_NOTICE "COMM=%s PID=%d\n", |
9a62ca40 RG |
980 | current->comm, current->pid); |
981 | else | |
9f06c38f | 982 | verbose_printk(KERN_NOTICE "COMM= invalid\n"); |
9a62ca40 | 983 | |
8f65873e | 984 | printk(KERN_NOTICE "CPU = %d\n", current_thread_info()->cpu); |
9a62ca40 | 985 | if (!((unsigned long)current->mm & 0x3) && (unsigned long)current->mm >= FIXED_CODE_START) |
ad361c98 JP |
986 | verbose_printk(KERN_NOTICE |
987 | "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n" | |
988 | " BSS = 0x%p-0x%p USER-STACK = 0x%p\n\n", | |
9a62ca40 RG |
989 | (void *)current->mm->start_code, |
990 | (void *)current->mm->end_code, | |
991 | (void *)current->mm->start_data, | |
992 | (void *)current->mm->end_data, | |
993 | (void *)current->mm->end_data, | |
994 | (void *)current->mm->brk, | |
995 | (void *)current->mm->start_stack); | |
996 | else | |
9f06c38f | 997 | verbose_printk(KERN_NOTICE "invalid mm\n"); |
49dce912 | 998 | } else |
ad361c98 JP |
999 | verbose_printk(KERN_NOTICE |
1000 | "No Valid process in current context\n"); | |
9f06c38f | 1001 | #endif |
49dce912 | 1002 | } |
226eb1ef | 1003 | |
b03b08ba | 1004 | void dump_bfin_mem(struct pt_regs *fp) |
49dce912 | 1005 | { |
9f06c38f | 1006 | #ifdef CONFIG_DEBUG_VERBOSE |
b03b08ba RG |
1007 | unsigned short *addr, *erraddr, val = 0, err = 0; |
1008 | char sti = 0, buf[6]; | |
1394f032 | 1009 | |
5d750b9e | 1010 | erraddr = (void *)fp->pc; |
b03b08ba | 1011 | |
9f06c38f | 1012 | verbose_printk(KERN_NOTICE "return address: [0x%p]; contents of:", erraddr); |
b03b08ba RG |
1013 | |
1014 | for (addr = (unsigned short *)((unsigned long)erraddr & ~0xF) - 0x10; | |
1015 | addr < (unsigned short *)((unsigned long)erraddr & ~0xF) + 0x10; | |
1016 | addr++) { | |
1017 | if (!((unsigned long)addr & 0xF)) | |
ad361c98 | 1018 | verbose_printk(KERN_NOTICE "0x%p: ", addr); |
b03b08ba | 1019 | |
7d98c881 | 1020 | if (!get_instruction(&val, addr)) { |
b03b08ba RG |
1021 | val = 0; |
1022 | sprintf(buf, "????"); | |
b03b08ba RG |
1023 | } else |
1024 | sprintf(buf, "%04x", val); | |
1025 | ||
1026 | if (addr == erraddr) { | |
9f06c38f | 1027 | verbose_printk("[%s]", buf); |
b03b08ba RG |
1028 | err = val; |
1029 | } else | |
9f06c38f | 1030 | verbose_printk(" %s ", buf); |
b03b08ba RG |
1031 | |
1032 | /* Do any previous instructions turn on interrupts? */ | |
1033 | if (addr <= erraddr && /* in the past */ | |
1034 | ((val >= 0x0040 && val <= 0x0047) || /* STI instruction */ | |
1035 | val == 0x017b)) /* [SP++] = RETI */ | |
1036 | sti = 1; | |
1037 | } | |
1038 | ||
9f06c38f | 1039 | verbose_printk("\n"); |
b03b08ba RG |
1040 | |
1041 | /* Hardware error interrupts can be deferred */ | |
1042 | if (unlikely(sti && (fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR && | |
1043 | oops_in_progress)){ | |
9f06c38f | 1044 | verbose_printk(KERN_NOTICE "Looks like this was a deferred error - sorry\n"); |
1394f032 | 1045 | #ifndef CONFIG_DEBUG_HWERR |
ad361c98 JP |
1046 | verbose_printk(KERN_NOTICE |
1047 | "The remaining message may be meaningless\n" | |
1048 | "You should enable CONFIG_DEBUG_HWERR to get a better idea where it came from\n"); | |
b03b08ba RG |
1049 | #else |
1050 | /* If we are handling only one peripheral interrupt | |
1051 | * and current mm and pid are valid, and the last error | |
1052 | * was in that user space process's text area | |
1053 | * print it out - because that is where the problem exists | |
1054 | */ | |
1055 | if ((!(((fp)->ipend & ~0x30) & (((fp)->ipend & ~0x30) - 1))) && | |
1056 | (current->pid && current->mm)) { | |
1057 | /* And the last RETI points to the current userspace context */ | |
1058 | if ((fp + 1)->pc >= current->mm->start_code && | |
1059 | (fp + 1)->pc <= current->mm->end_code) { | |
9f06c38f RG |
1060 | verbose_printk(KERN_NOTICE "It might be better to look around here : \n"); |
1061 | verbose_printk(KERN_NOTICE "-------------------------------------------\n"); | |
b03b08ba | 1062 | show_regs(fp + 1); |
9f06c38f | 1063 | verbose_printk(KERN_NOTICE "-------------------------------------------\n"); |
b03b08ba | 1064 | } |
1394f032 | 1065 | } |
b03b08ba RG |
1066 | #endif |
1067 | } | |
9f06c38f | 1068 | #endif |
49dce912 MF |
1069 | } |
1070 | ||
1071 | void show_regs(struct pt_regs *fp) | |
1072 | { | |
9f06c38f | 1073 | #ifdef CONFIG_DEBUG_VERBOSE |
49dce912 | 1074 | char buf [150]; |
d8f66c8c RG |
1075 | struct irqaction *action; |
1076 | unsigned int i; | |
2f95d5bd | 1077 | unsigned long flags = 0; |
b6dbde27 | 1078 | unsigned int cpu = raw_smp_processor_id(); |
2f95d5bd | 1079 | unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); |
226eb1ef | 1080 | |
9ba3c24f RG |
1081 | verbose_printk(KERN_NOTICE "\n"); |
1082 | if (CPUID != bfin_cpuid()) | |
1083 | verbose_printk(KERN_NOTICE "Compiled for cpu family 0x%04x (Rev %d), " | |
1084 | "but running on:0x%04x (Rev %d)\n", | |
1085 | CPUID, bfin_compiled_revid(), bfin_cpuid(), bfin_revid()); | |
1086 | ||
1087 | verbose_printk(KERN_NOTICE "ADSP-%s-0.%d", | |
1088 | CPU, bfin_compiled_revid()); | |
1089 | ||
1090 | if (bfin_compiled_revid() != bfin_revid()) | |
1091 | verbose_printk("(Detected 0.%d)", bfin_revid()); | |
1092 | ||
1093 | verbose_printk(" %lu(MHz CCLK) %lu(MHz SCLK) (%s)\n", | |
1094 | get_cclk()/1000000, get_sclk()/1000000, | |
1095 | #ifdef CONFIG_MPU | |
1096 | "mpu on" | |
1097 | #else | |
1098 | "mpu off" | |
1099 | #endif | |
1100 | ); | |
1101 | ||
1102 | verbose_printk(KERN_NOTICE "%s", linux_banner); | |
1103 | ||
ae4f073c RG |
1104 | verbose_printk(KERN_NOTICE "\nSEQUENCER STATUS:\t\t%s\n", print_tainted()); |
1105 | verbose_printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx IMASK: %04lx SYSCFG: %04lx\n", | |
b6dbde27 | 1106 | (long)fp->seqstat, fp->ipend, cpu_pda[raw_smp_processor_id()].ex_imask, fp->syscfg); |
ae4f073c RG |
1107 | if (fp->ipend & EVT_IRPTEN) |
1108 | verbose_printk(KERN_NOTICE " Global Interrupts Disabled (IPEND[4])\n"); | |
b6dbde27 | 1109 | if (!(cpu_pda[raw_smp_processor_id()].ex_imask & (EVT_IVG13 | EVT_IVG12 | EVT_IVG11 | |
ae4f073c RG |
1110 | EVT_IVG10 | EVT_IVG9 | EVT_IVG8 | EVT_IVG7 | EVT_IVTMR))) |
1111 | verbose_printk(KERN_NOTICE " Peripheral interrupts masked off\n"); | |
b6dbde27 | 1112 | if (!(cpu_pda[raw_smp_processor_id()].ex_imask & (EVT_IVG15 | EVT_IVG14))) |
ae4f073c | 1113 | verbose_printk(KERN_NOTICE " Kernel interrupts masked off\n"); |
1d5ff7e2 | 1114 | if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) { |
9f06c38f | 1115 | verbose_printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n", |
1d5ff7e2 RG |
1116 | (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14); |
1117 | #ifdef EBIU_ERRMST | |
1118 | /* If the error was from the EBIU, print it out */ | |
1119 | if (bfin_read_EBIU_ERRMST() & CORE_ERROR) { | |
9f06c38f | 1120 | verbose_printk(KERN_NOTICE " EBIU Error Reason : 0x%04x\n", |
1d5ff7e2 | 1121 | bfin_read_EBIU_ERRMST()); |
9f06c38f | 1122 | verbose_printk(KERN_NOTICE " EBIU Error Address : 0x%08x\n", |
1d5ff7e2 RG |
1123 | bfin_read_EBIU_ERRADD()); |
1124 | } | |
1125 | #endif | |
1126 | } | |
9f06c38f | 1127 | verbose_printk(KERN_NOTICE " EXCAUSE : 0x%lx\n", |
13fe24f3 | 1128 | fp->seqstat & SEQSTAT_EXCAUSE); |
2f95d5bd | 1129 | for (i = 2; i <= 15 ; i++) { |
d8f66c8c | 1130 | if (fp->ipend & (1 << i)) { |
2f95d5bd RG |
1131 | if (i != 4) { |
1132 | decode_address(buf, bfin_read32(EVT0 + 4*i)); | |
1133 | verbose_printk(KERN_NOTICE " physical IVG%i asserted : %s\n", i, buf); | |
1134 | } else | |
1135 | verbose_printk(KERN_NOTICE " interrupts disabled\n"); | |
d8f66c8c RG |
1136 | } |
1137 | } | |
1138 | ||
1139 | /* if no interrupts are going off, don't print this out */ | |
1140 | if (fp->ipend & ~0x3F) { | |
1141 | for (i = 0; i < (NR_IRQS - 1); i++) { | |
2f95d5bd RG |
1142 | if (!in_atomic) |
1143 | spin_lock_irqsave(&irq_desc[i].lock, flags); | |
1144 | ||
d8f66c8c RG |
1145 | action = irq_desc[i].action; |
1146 | if (!action) | |
1147 | goto unlock; | |
1148 | ||
1149 | decode_address(buf, (unsigned int)action->handler); | |
9f06c38f | 1150 | verbose_printk(KERN_NOTICE " logical irq %3d mapped : %s", i, buf); |
d8f66c8c RG |
1151 | for (action = action->next; action; action = action->next) { |
1152 | decode_address(buf, (unsigned int)action->handler); | |
9f06c38f | 1153 | verbose_printk(", %s", buf); |
d8f66c8c | 1154 | } |
9f06c38f | 1155 | verbose_printk("\n"); |
d8f66c8c | 1156 | unlock: |
2f95d5bd RG |
1157 | if (!in_atomic) |
1158 | spin_unlock_irqrestore(&irq_desc[i].lock, flags); | |
d8f66c8c RG |
1159 | } |
1160 | } | |
c5d88d9e | 1161 | |
226eb1ef | 1162 | decode_address(buf, fp->rete); |
9f06c38f | 1163 | verbose_printk(KERN_NOTICE " RETE: %s\n", buf); |
226eb1ef | 1164 | decode_address(buf, fp->retn); |
9f06c38f | 1165 | verbose_printk(KERN_NOTICE " RETN: %s\n", buf); |
226eb1ef | 1166 | decode_address(buf, fp->retx); |
9f06c38f | 1167 | verbose_printk(KERN_NOTICE " RETX: %s\n", buf); |
226eb1ef | 1168 | decode_address(buf, fp->rets); |
9f06c38f | 1169 | verbose_printk(KERN_NOTICE " RETS: %s\n", buf); |
49dce912 | 1170 | decode_address(buf, fp->pc); |
9f06c38f | 1171 | verbose_printk(KERN_NOTICE " PC : %s\n", buf); |
c5d88d9e | 1172 | |
13fe24f3 RG |
1173 | if (((long)fp->seqstat & SEQSTAT_EXCAUSE) && |
1174 | (((long)fp->seqstat & SEQSTAT_EXCAUSE) != VEC_HWERR)) { | |
8f65873e | 1175 | decode_address(buf, cpu_pda[cpu].dcplb_fault_addr); |
9f06c38f | 1176 | verbose_printk(KERN_NOTICE "DCPLB_FAULT_ADDR: %s\n", buf); |
8f65873e | 1177 | decode_address(buf, cpu_pda[cpu].icplb_fault_addr); |
9f06c38f | 1178 | verbose_printk(KERN_NOTICE "ICPLB_FAULT_ADDR: %s\n", buf); |
226eb1ef RG |
1179 | } |
1180 | ||
ad361c98 | 1181 | verbose_printk(KERN_NOTICE "PROCESSOR STATE:\n"); |
9f06c38f | 1182 | verbose_printk(KERN_NOTICE " R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n", |
c5d88d9e | 1183 | fp->r0, fp->r1, fp->r2, fp->r3); |
9f06c38f | 1184 | verbose_printk(KERN_NOTICE " R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n", |
c5d88d9e | 1185 | fp->r4, fp->r5, fp->r6, fp->r7); |
9f06c38f | 1186 | verbose_printk(KERN_NOTICE " P0 : %08lx P1 : %08lx P2 : %08lx P3 : %08lx\n", |
c5d88d9e | 1187 | fp->p0, fp->p1, fp->p2, fp->p3); |
9f06c38f | 1188 | verbose_printk(KERN_NOTICE " P4 : %08lx P5 : %08lx FP : %08lx SP : %08lx\n", |
226eb1ef | 1189 | fp->p4, fp->p5, fp->fp, (long)fp); |
9f06c38f | 1190 | verbose_printk(KERN_NOTICE " LB0: %08lx LT0: %08lx LC0: %08lx\n", |
c5d88d9e | 1191 | fp->lb0, fp->lt0, fp->lc0); |
9f06c38f | 1192 | verbose_printk(KERN_NOTICE " LB1: %08lx LT1: %08lx LC1: %08lx\n", |
c5d88d9e | 1193 | fp->lb1, fp->lt1, fp->lc1); |
9f06c38f | 1194 | verbose_printk(KERN_NOTICE " B0 : %08lx L0 : %08lx M0 : %08lx I0 : %08lx\n", |
c5d88d9e | 1195 | fp->b0, fp->l0, fp->m0, fp->i0); |
9f06c38f | 1196 | verbose_printk(KERN_NOTICE " B1 : %08lx L1 : %08lx M1 : %08lx I1 : %08lx\n", |
c5d88d9e | 1197 | fp->b1, fp->l1, fp->m1, fp->i1); |
9f06c38f | 1198 | verbose_printk(KERN_NOTICE " B2 : %08lx L2 : %08lx M2 : %08lx I2 : %08lx\n", |
c5d88d9e | 1199 | fp->b2, fp->l2, fp->m2, fp->i2); |
9f06c38f | 1200 | verbose_printk(KERN_NOTICE " B3 : %08lx L3 : %08lx M3 : %08lx I3 : %08lx\n", |
c5d88d9e | 1201 | fp->b3, fp->l3, fp->m3, fp->i3); |
9f06c38f | 1202 | verbose_printk(KERN_NOTICE "A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n", |
226eb1ef | 1203 | fp->a0w, fp->a0x, fp->a1w, fp->a1x); |
c5d88d9e | 1204 | |
9f06c38f | 1205 | verbose_printk(KERN_NOTICE "USP : %08lx ASTAT: %08lx\n", |
c5d88d9e | 1206 | rdusp(), fp->astat); |
1394f032 | 1207 | |
9f06c38f RG |
1208 | verbose_printk(KERN_NOTICE "\n"); |
1209 | #endif | |
1394f032 BW |
1210 | } |
1211 | ||
1212 | #ifdef CONFIG_SYS_BFIN_SPINLOCK_L1 | |
1213 | asmlinkage int sys_bfin_spinlock(int *spinlock)__attribute__((l1_text)); | |
1214 | #endif | |
1215 | ||
8f65873e GY |
1216 | static DEFINE_SPINLOCK(bfin_spinlock_lock); |
1217 | ||
1218 | asmlinkage int sys_bfin_spinlock(int *p) | |
1394f032 | 1219 | { |
8f65873e | 1220 | int ret, tmp = 0; |
1394f032 | 1221 | |
8f65873e GY |
1222 | spin_lock(&bfin_spinlock_lock); /* This would also hold kernel preemption. */ |
1223 | ret = get_user(tmp, p); | |
1224 | if (likely(ret == 0)) { | |
1225 | if (unlikely(tmp)) | |
1394f032 | 1226 | ret = 1; |
8f65873e GY |
1227 | else |
1228 | put_user(1, p); | |
1394f032 | 1229 | } |
8f65873e | 1230 | spin_unlock(&bfin_spinlock_lock); |
1394f032 BW |
1231 | return ret; |
1232 | } | |
1233 | ||
1ffe6646 MF |
1234 | int bfin_request_exception(unsigned int exception, void (*handler)(void)) |
1235 | { | |
1236 | void (*curr_handler)(void); | |
1237 | ||
1238 | if (exception > 0x3F) | |
1239 | return -EINVAL; | |
1240 | ||
1241 | curr_handler = ex_table[exception]; | |
1242 | ||
1243 | if (curr_handler != ex_replaceable) | |
1244 | return -EBUSY; | |
1245 | ||
1246 | ex_table[exception] = handler; | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | EXPORT_SYMBOL(bfin_request_exception); | |
1251 | ||
1252 | int bfin_free_exception(unsigned int exception, void (*handler)(void)) | |
1253 | { | |
1254 | void (*curr_handler)(void); | |
1255 | ||
1256 | if (exception > 0x3F) | |
1257 | return -EINVAL; | |
1258 | ||
1259 | curr_handler = ex_table[exception]; | |
1260 | ||
1261 | if (curr_handler != handler) | |
1262 | return -EBUSY; | |
1263 | ||
1264 | ex_table[exception] = ex_replaceable; | |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | EXPORT_SYMBOL(bfin_free_exception); | |
1269 | ||
1394f032 BW |
1270 | void panic_cplb_error(int cplb_panic, struct pt_regs *fp) |
1271 | { | |
1272 | switch (cplb_panic) { | |
1273 | case CPLB_NO_UNLOCKED: | |
1274 | printk(KERN_EMERG "All CPLBs are locked\n"); | |
1275 | break; | |
1276 | case CPLB_PROT_VIOL: | |
1277 | return; | |
1278 | case CPLB_NO_ADDR_MATCH: | |
1279 | return; | |
1280 | case CPLB_UNKNOWN_ERR: | |
1281 | printk(KERN_EMERG "Unknown CPLB Exception\n"); | |
1282 | break; | |
1283 | } | |
1284 | ||
226eb1ef RG |
1285 | oops_in_progress = 1; |
1286 | ||
49dce912 | 1287 | dump_bfin_process(fp); |
b03b08ba | 1288 | dump_bfin_mem(fp); |
49dce912 | 1289 | show_regs(fp); |
1394f032 | 1290 | dump_stack(); |
d8804adf | 1291 | panic("Unrecoverable event"); |
1394f032 | 1292 | } |