| signal.c (75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37) | signal.c (09f8a6db20e6ed8eab1b2b23d09d2458f6e15062) |
|---|---|
| 1/* 2 * arch/xtensa/kernel/signal.c 3 * 4 * Default platform functions. 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. --- 321 unchanged lines hidden (view full) --- 330} 331 332 333static int setup_frame(struct ksignal *ksig, sigset_t *set, 334 struct pt_regs *regs) 335{ 336 struct rt_sigframe *frame; 337 int err = 0, sig = ksig->sig; | 1/* 2 * arch/xtensa/kernel/signal.c 3 * 4 * Default platform functions. 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. --- 321 unchanged lines hidden (view full) --- 330} 331 332 333static int setup_frame(struct ksignal *ksig, sigset_t *set, 334 struct pt_regs *regs) 335{ 336 struct rt_sigframe *frame; 337 int err = 0, sig = ksig->sig; |
| 338 unsigned long sp, ra, tp; | 338 unsigned long sp, ra, tp, ps; 339 unsigned int base; |
| 339 340 sp = regs->areg[1]; 341 342 if ((ksig->ka.sa.sa_flags & SA_ONSTACK) != 0 && sas_ss_flags(sp) == 0) { 343 sp = current->sas_ss_sp + current->sas_ss_size; 344 } 345 346 frame = (void *)((sp - sizeof(*frame)) & -16ul); --- 33 unchanged lines hidden (view full) --- 380 381 /* 382 * Create signal handler execution context. 383 * Return context not modified until this point. 384 */ 385 386 /* Set up registers for signal handler; preserve the threadptr */ 387 tp = regs->threadptr; | 340 341 sp = regs->areg[1]; 342 343 if ((ksig->ka.sa.sa_flags & SA_ONSTACK) != 0 && sas_ss_flags(sp) == 0) { 344 sp = current->sas_ss_sp + current->sas_ss_size; 345 } 346 347 frame = (void *)((sp - sizeof(*frame)) & -16ul); --- 33 unchanged lines hidden (view full) --- 381 382 /* 383 * Create signal handler execution context. 384 * Return context not modified until this point. 385 */ 386 387 /* Set up registers for signal handler; preserve the threadptr */ 388 tp = regs->threadptr; |
| 389 ps = regs->ps; |
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| 388 start_thread(regs, (unsigned long) ksig->ka.sa.sa_handler, 389 (unsigned long) frame); 390 | 390 start_thread(regs, (unsigned long) ksig->ka.sa.sa_handler, 391 (unsigned long) frame); 392 |
| 391 /* Set up a stack frame for a call4 392 * Note: PS.CALLINC is set to one by start_thread 393 */ 394 regs->areg[4] = (((unsigned long) ra) & 0x3fffffff) | 0x40000000; 395 regs->areg[6] = (unsigned long) sig; 396 regs->areg[7] = (unsigned long) &frame->info; 397 regs->areg[8] = (unsigned long) &frame->uc; | 393 /* Set up a stack frame for a call4 if userspace uses windowed ABI */ 394 if (ps & PS_WOE_MASK) { 395 base = 4; 396 regs->areg[base] = 397 (((unsigned long) ra) & 0x3fffffff) | 0x40000000; 398 ps = (ps & ~(PS_CALLINC_MASK | PS_OWB_MASK)) | 399 (1 << PS_CALLINC_SHIFT); 400 } else { 401 base = 0; 402 regs->areg[base] = (unsigned long) ra; 403 } 404 regs->areg[base + 2] = (unsigned long) sig; 405 regs->areg[base + 3] = (unsigned long) &frame->info; 406 regs->areg[base + 4] = (unsigned long) &frame->uc; |
| 398 regs->threadptr = tp; | 407 regs->threadptr = tp; |
| 408 regs->ps = ps; |
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| 399 400 pr_debug("SIG rt deliver (%s:%d): signal=%d sp=%p pc=%08lx\n", 401 current->comm, current->pid, sig, frame, regs->pc); 402 403 return 0; 404} 405 406/* --- 90 unchanged lines hidden --- | 409 410 pr_debug("SIG rt deliver (%s:%d): signal=%d sp=%p pc=%08lx\n", 411 current->comm, current->pid, sig, frame, regs->pc); 412 413 return 0; 414} 415 416/* --- 90 unchanged lines hidden --- |