diff options
Diffstat (limited to 'arch/sh/lib64/dbg.c')
-rw-r--r-- | arch/sh/lib64/dbg.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/arch/sh/lib64/dbg.c b/arch/sh/lib64/dbg.c index 2fb8eaf6de60..25f2481bd89e 100644 --- a/arch/sh/lib64/dbg.c +++ b/arch/sh/lib64/dbg.c | |||
@@ -135,140 +135,6 @@ void print_itlb(void) | |||
135 | (" =============================================================\n"); | 135 | (" =============================================================\n"); |
136 | } | 136 | } |
137 | 137 | ||
138 | /* ======================================================================= */ | ||
139 | |||
140 | #ifdef CONFIG_POOR_MANS_STRACE | ||
141 | |||
142 | #include "syscalltab.h" | ||
143 | |||
144 | struct ring_node { | ||
145 | int evt; | ||
146 | int ret_addr; | ||
147 | int event; | ||
148 | int tra; | ||
149 | int pid; | ||
150 | unsigned long sp; | ||
151 | unsigned long pc; | ||
152 | }; | ||
153 | |||
154 | static struct ring_node event_ring[16]; | ||
155 | static int event_ptr = 0; | ||
156 | |||
157 | struct stored_syscall_data { | ||
158 | int pid; | ||
159 | int syscall_number; | ||
160 | }; | ||
161 | |||
162 | #define N_STORED_SYSCALLS 16 | ||
163 | |||
164 | static struct stored_syscall_data stored_syscalls[N_STORED_SYSCALLS]; | ||
165 | static int syscall_next=0; | ||
166 | static int syscall_next_print=0; | ||
167 | |||
168 | void evt_debug(int evt, int ret_addr, int event, int tra, struct pt_regs *regs) | ||
169 | { | ||
170 | int syscallno = tra & 0xff; | ||
171 | unsigned long sp; | ||
172 | unsigned long stack_bottom; | ||
173 | int pid; | ||
174 | struct ring_node *rr; | ||
175 | |||
176 | pid = current->pid; | ||
177 | stack_bottom = (unsigned long) task_stack_page(current); | ||
178 | asm volatile("ori r15, 0, %0" : "=r" (sp)); | ||
179 | rr = event_ring + event_ptr; | ||
180 | rr->evt = evt; | ||
181 | rr->ret_addr = ret_addr; | ||
182 | rr->event = event; | ||
183 | rr->tra = tra; | ||
184 | rr->pid = pid; | ||
185 | rr->sp = sp; | ||
186 | rr->pc = regs->pc; | ||
187 | |||
188 | if (sp < stack_bottom + 3092) { | ||
189 | int i, j; | ||
190 | printk("evt_debug : stack underflow report\n"); | ||
191 | for (j=0, i = event_ptr; j<16; j++) { | ||
192 | rr = event_ring + i; | ||
193 | printk("evt=%08x event=%08x tra=%08x pid=%5d sp=%08lx pc=%08lx\n", | ||
194 | rr->evt, rr->event, rr->tra, rr->pid, rr->sp, rr->pc); | ||
195 | i--; | ||
196 | i &= 15; | ||
197 | } | ||
198 | panic("STACK UNDERFLOW\n"); | ||
199 | } | ||
200 | |||
201 | event_ptr = (event_ptr + 1) & 15; | ||
202 | |||
203 | if ((event == 2) && (evt == 0x160)) { | ||
204 | if (syscallno < NUM_SYSCALL_INFO_ENTRIES) { | ||
205 | /* Store the syscall information to print later. We | ||
206 | * can't print this now - currently we're running with | ||
207 | * SR.BL=1, so we can't take a tlbmiss (which could occur | ||
208 | * in the console drivers under printk). | ||
209 | * | ||
210 | * Just overwrite old entries on ring overflow - this | ||
211 | * is only for last-hope debugging. */ | ||
212 | stored_syscalls[syscall_next].pid = current->pid; | ||
213 | stored_syscalls[syscall_next].syscall_number = syscallno; | ||
214 | syscall_next++; | ||
215 | syscall_next &= (N_STORED_SYSCALLS - 1); | ||
216 | } | ||
217 | } | ||
218 | } | ||
219 | |||
220 | static void drain_syscalls(void) { | ||
221 | while (syscall_next_print != syscall_next) { | ||
222 | printk("Task %d: %s()\n", | ||
223 | stored_syscalls[syscall_next_print].pid, | ||
224 | syscall_info_table[stored_syscalls[syscall_next_print].syscall_number].name); | ||
225 | syscall_next_print++; | ||
226 | syscall_next_print &= (N_STORED_SYSCALLS - 1); | ||
227 | } | ||
228 | } | ||
229 | |||
230 | void evt_debug2(unsigned int ret) | ||
231 | { | ||
232 | drain_syscalls(); | ||
233 | printk("Task %d: syscall returns %08x\n", current->pid, ret); | ||
234 | } | ||
235 | |||
236 | void evt_debug_ret_from_irq(struct pt_regs *regs) | ||
237 | { | ||
238 | int pid; | ||
239 | struct ring_node *rr; | ||
240 | |||
241 | pid = current->pid; | ||
242 | rr = event_ring + event_ptr; | ||
243 | rr->evt = 0xffff; | ||
244 | rr->ret_addr = 0; | ||
245 | rr->event = 0; | ||
246 | rr->tra = 0; | ||
247 | rr->pid = pid; | ||
248 | rr->pc = regs->pc; | ||
249 | event_ptr = (event_ptr + 1) & 15; | ||
250 | } | ||
251 | |||
252 | void evt_debug_ret_from_exc(struct pt_regs *regs) | ||
253 | { | ||
254 | int pid; | ||
255 | struct ring_node *rr; | ||
256 | |||
257 | pid = current->pid; | ||
258 | rr = event_ring + event_ptr; | ||
259 | rr->evt = 0xfffe; | ||
260 | rr->ret_addr = 0; | ||
261 | rr->event = 0; | ||
262 | rr->tra = 0; | ||
263 | rr->pid = pid; | ||
264 | rr->pc = regs->pc; | ||
265 | event_ptr = (event_ptr + 1) & 15; | ||
266 | } | ||
267 | |||
268 | #endif /* CONFIG_POOR_MANS_STRACE */ | ||
269 | |||
270 | /* ======================================================================= */ | ||
271 | |||
272 | void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs) | 138 | void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs) |
273 | { | 139 | { |
274 | 140 | ||