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-rw-r--r--arch/m68k/kernel/ptrace.c333
1 files changed, 166 insertions, 167 deletions
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index f4e1e5eb8e12..9bb25ea78677 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -95,7 +95,7 @@ static inline int put_reg(struct task_struct *task, int regno,
95 if (regno == PT_USP) 95 if (regno == PT_USP)
96 addr = &task->thread.usp; 96 addr = &task->thread.usp;
97 else if (regno < sizeof(regoff)/sizeof(regoff[0])) 97 else if (regno < sizeof(regoff)/sizeof(regoff[0]))
98 addr = (unsigned long *) (task->thread.esp0 + regoff[regno]); 98 addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
99 else 99 else
100 return -1; 100 return -1;
101 *addr = data; 101 *addr = data;
@@ -157,216 +157,215 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
157 157
158 switch (request) { 158 switch (request) {
159 /* when I and D space are separate, these will need to be fixed. */ 159 /* when I and D space are separate, these will need to be fixed. */
160 case PTRACE_PEEKTEXT: /* read word at location addr. */ 160 case PTRACE_PEEKTEXT: /* read word at location addr. */
161 case PTRACE_PEEKDATA: { 161 case PTRACE_PEEKDATA: {
162 unsigned long tmp; 162 unsigned long tmp;
163 int copied; 163 int copied;
164 164
165 copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0); 165 copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
166 ret = -EIO; 166 ret = -EIO;
167 if (copied != sizeof(tmp)) 167 if (copied != sizeof(tmp))
168 break;
169 ret = put_user(tmp,(unsigned long *) data);
170 break; 168 break;
171 } 169 ret = put_user(tmp, (unsigned long *)data);
170 break;
171 }
172 172
173 /* read the word at location addr in the USER area. */ 173 /* read the word at location addr in the USER area. */
174 case PTRACE_PEEKUSR: { 174 case PTRACE_PEEKUSR: {
175 unsigned long tmp; 175 unsigned long tmp;
176 176
177 ret = -EIO; 177 ret = -EIO;
178 if ((addr & 3) || addr < 0 || 178 if ((addr & 3) || addr < 0 ||
179 addr > sizeof(struct user) - 3) 179 addr > sizeof(struct user) - 3)
180 break; 180 break;
181 181
182 tmp = 0; /* Default return condition */ 182 tmp = 0; /* Default return condition */
183 addr = addr >> 2; /* temporary hack. */ 183 addr = addr >> 2; /* temporary hack. */
184 ret = -EIO; 184 ret = -EIO;
185 if (addr < 19) { 185 if (addr < 19) {
186 tmp = get_reg(child, addr); 186 tmp = get_reg(child, addr);
187 if (addr == PT_SR) 187 if (addr == PT_SR)
188 tmp >>= 16; 188 tmp >>= 16;
189 } else if (addr >= 21 && addr < 49) { 189 } else if (addr >= 21 && addr < 49) {
190 tmp = child->thread.fp[addr - 21]; 190 tmp = child->thread.fp[addr - 21];
191#ifdef CONFIG_M68KFPU_EMU 191#ifdef CONFIG_M68KFPU_EMU
192 /* Convert internal fpu reg representation 192 /* Convert internal fpu reg representation
193 * into long double format 193 * into long double format
194 */ 194 */
195 if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) 195 if (FPU_IS_EMU && (addr < 45) && !(addr % 3))
196 tmp = ((tmp & 0xffff0000) << 15) | 196 tmp = ((tmp & 0xffff0000) << 15) |
197 ((tmp & 0x0000ffff) << 16); 197 ((tmp & 0x0000ffff) << 16);
198#endif 198#endif
199 } else 199 } else
200 break;
201 ret = put_user(tmp,(unsigned long *) data);
202 break; 200 break;
203 } 201 ret = put_user(tmp, (unsigned long *)data);
202 break;
203 }
204 204
205 /* when I and D space are separate, this will have to be fixed. */ 205 /* when I and D space are separate, this will have to be fixed. */
206 case PTRACE_POKETEXT: /* write the word at location addr. */ 206 case PTRACE_POKETEXT: /* write the word at location addr. */
207 case PTRACE_POKEDATA: 207 case PTRACE_POKEDATA:
208 ret = 0; 208 ret = 0;
209 if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data)) 209 if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data))
210 break;
211 ret = -EIO;
212 break; 210 break;
211 ret = -EIO;
212 break;
213 213
214 case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ 214 case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
215 ret = -EIO; 215 ret = -EIO;
216 if ((addr & 3) || addr < 0 || 216 if ((addr & 3) || addr < 0 ||
217 addr > sizeof(struct user) - 3) 217 addr > sizeof(struct user) - 3)
218 break;
219
220 addr = addr >> 2; /* temporary hack. */
221
222 if (addr == PT_SR) {
223 data &= SR_MASK;
224 data <<= 16;
225 data |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
226 }
227 if (addr < 19) {
228 if (put_reg(child, addr, data))
229 break;
230 ret = 0;
231 break;
232 }
233 if (addr >= 21 && addr < 48)
234 {
235#ifdef CONFIG_M68KFPU_EMU
236 /* Convert long double format
237 * into internal fpu reg representation
238 */
239 if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) {
240 data = (unsigned long)data << 15;
241 data = (data & 0xffff0000) |
242 ((data & 0x0000ffff) >> 1);
243 }
244#endif
245 child->thread.fp[addr - 21] = data;
246 ret = 0;
247 }
248 break; 218 break;
249 219
250 case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ 220 addr = addr >> 2; /* temporary hack. */
251 case PTRACE_CONT: { /* restart after signal. */
252 long tmp;
253 221
254 ret = -EIO; 222 if (addr == PT_SR) {
255 if (!valid_signal(data)) 223 data &= SR_MASK;
224 data <<= 16;
225 data |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
226 }
227 if (addr < 19) {
228 if (put_reg(child, addr, data))
256 break; 229 break;
257 if (request == PTRACE_SYSCALL) {
258 child->thread.work.syscall_trace = ~0;
259 } else {
260 child->thread.work.syscall_trace = 0;
261 }
262 child->exit_code = data;
263 /* make sure the single step bit is not set. */
264 tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
265 put_reg(child, PT_SR, tmp);
266 child->thread.work.delayed_trace = 0;
267 wake_up_process(child);
268 ret = 0; 230 ret = 0;
269 break; 231 break;
270 } 232 }
271 233 if (addr >= 21 && addr < 48) {
272/* 234#ifdef CONFIG_M68KFPU_EMU
273 * make the child exit. Best I can do is send it a sigkill. 235 /* Convert long double format
274 * perhaps it should be put in the status that it wants to 236 * into internal fpu reg representation
275 * exit. 237 */
276 */ 238 if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) {
277 case PTRACE_KILL: { 239 data = (unsigned long)data << 15;
278 long tmp; 240 data = (data & 0xffff0000) |
279 241 ((data & 0x0000ffff) >> 1);
242 }
243#endif
244 child->thread.fp[addr - 21] = data;
280 ret = 0; 245 ret = 0;
281 if (child->exit_state == EXIT_ZOMBIE) /* already dead */
282 break;
283 child->exit_code = SIGKILL;
284 /* make sure the single step bit is not set. */
285 tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
286 put_reg(child, PT_SR, tmp);
287 child->thread.work.delayed_trace = 0;
288 wake_up_process(child);
289 break;
290 } 246 }
247 break;
291 248
292 case PTRACE_SINGLESTEP: { /* set the trap flag. */ 249 case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
293 long tmp; 250 case PTRACE_CONT: { /* restart after signal. */
251 long tmp;
294 252
295 ret = -EIO; 253 ret = -EIO;
296 if (!valid_signal(data)) 254 if (!valid_signal(data))
297 break; 255 break;
256 if (request == PTRACE_SYSCALL) {
257 child->thread.work.syscall_trace = ~0;
258 } else {
298 child->thread.work.syscall_trace = 0; 259 child->thread.work.syscall_trace = 0;
299 tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16); 260 }
300 put_reg(child, PT_SR, tmp); 261 child->exit_code = data;
301 child->thread.work.delayed_trace = 1; 262 /* make sure the single step bit is not set. */
263 tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
264 put_reg(child, PT_SR, tmp);
265 child->thread.work.delayed_trace = 0;
266 wake_up_process(child);
267 ret = 0;
268 break;
269 }
302 270
303 child->exit_code = data; 271 /*
304 /* give it a chance to run. */ 272 * make the child exit. Best I can do is send it a sigkill.
305 wake_up_process(child); 273 * perhaps it should be put in the status that it wants to
306 ret = 0; 274 * exit.
275 */
276 case PTRACE_KILL: {
277 long tmp;
278
279 ret = 0;
280 if (child->exit_state == EXIT_ZOMBIE) /* already dead */
307 break; 281 break;
308 } 282 child->exit_code = SIGKILL;
283 /* make sure the single step bit is not set. */
284 tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
285 put_reg(child, PT_SR, tmp);
286 child->thread.work.delayed_trace = 0;
287 wake_up_process(child);
288 break;
289 }
290
291 case PTRACE_SINGLESTEP: { /* set the trap flag. */
292 long tmp;
309 293
310 case PTRACE_DETACH: /* detach a process that was attached. */ 294 ret = -EIO;
311 ret = ptrace_detach(child, data); 295 if (!valid_signal(data))
312 break; 296 break;
297 child->thread.work.syscall_trace = 0;
298 tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16);
299 put_reg(child, PT_SR, tmp);
300 child->thread.work.delayed_trace = 1;
301
302 child->exit_code = data;
303 /* give it a chance to run. */
304 wake_up_process(child);
305 ret = 0;
306 break;
307 }
308
309 case PTRACE_DETACH: /* detach a process that was attached. */
310 ret = ptrace_detach(child, data);
311 break;
313 312
314 case PTRACE_GETREGS: { /* Get all gp regs from the child. */ 313 case PTRACE_GETREGS: { /* Get all gp regs from the child. */
315 int i; 314 int i;
316 unsigned long tmp; 315 unsigned long tmp;
317 for (i = 0; i < 19; i++) { 316 for (i = 0; i < 19; i++) {
318 tmp = get_reg(child, i); 317 tmp = get_reg(child, i);
319 if (i == PT_SR) 318 if (i == PT_SR)
320 tmp >>= 16; 319 tmp >>= 16;
321 if (put_user(tmp, (unsigned long *) data)) { 320 if (put_user(tmp, (unsigned long *)data)) {
322 ret = -EFAULT; 321 ret = -EFAULT;
323 break; 322 break;
324 }
325 data += sizeof(long);
326 } 323 }
327 ret = 0; 324 data += sizeof(long);
328 break;
329 } 325 }
326 ret = 0;
327 break;
328 }
330 329
331 case PTRACE_SETREGS: { /* Set all gp regs in the child. */ 330 case PTRACE_SETREGS: { /* Set all gp regs in the child. */
332 int i; 331 int i;
333 unsigned long tmp; 332 unsigned long tmp;
334 for (i = 0; i < 19; i++) { 333 for (i = 0; i < 19; i++) {
335 if (get_user(tmp, (unsigned long *) data)) { 334 if (get_user(tmp, (unsigned long *)data)) {
336 ret = -EFAULT; 335 ret = -EFAULT;
337 break; 336 break;
338 } 337 }
339 if (i == PT_SR) { 338 if (i == PT_SR) {
340 tmp &= SR_MASK; 339 tmp &= SR_MASK;
341 tmp <<= 16; 340 tmp <<= 16;
342 tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16); 341 tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
343 }
344 put_reg(child, i, tmp);
345 data += sizeof(long);
346 } 342 }
347 ret = 0; 343 put_reg(child, i, tmp);
348 break; 344 data += sizeof(long);
349 } 345 }
346 ret = 0;
347 break;
348 }
350 349
351 case PTRACE_GETFPREGS: { /* Get the child FPU state. */ 350 case PTRACE_GETFPREGS: { /* Get the child FPU state. */
352 ret = 0; 351 ret = 0;
353 if (copy_to_user((void *)data, &child->thread.fp, 352 if (copy_to_user((void *)data, &child->thread.fp,
354 sizeof(struct user_m68kfp_struct))) 353 sizeof(struct user_m68kfp_struct)))
355 ret = -EFAULT; 354 ret = -EFAULT;
356 break; 355 break;
357 } 356 }
358 357
359 case PTRACE_SETFPREGS: { /* Set the child FPU state. */ 358 case PTRACE_SETFPREGS: { /* Set the child FPU state. */
360 ret = 0; 359 ret = 0;
361 if (copy_from_user(&child->thread.fp, (void *)data, 360 if (copy_from_user(&child->thread.fp, (void *)data,
362 sizeof(struct user_m68kfp_struct))) 361 sizeof(struct user_m68kfp_struct)))
363 ret = -EFAULT; 362 ret = -EFAULT;
364 break; 363 break;
365 } 364 }
366 365
367 default: 366 default:
368 ret = ptrace_request(child, request, addr, data); 367 ret = ptrace_request(child, request, addr, data);
369 break; 368 break;
370 } 369 }
371out_tsk: 370out_tsk:
372 put_task_struct(child); 371 put_task_struct(child);
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-20 05:37:56 -0400