51 static void get_dbginfo(pid_t child_pid, struct ppc_debug_info *dbginfo)  in get_dbginfo()  argument
53 	if (ptrace(PPC_PTRACE_GETHWDBGINFO, child_pid, NULL, dbginfo)) {  in get_dbginfo()
211 static void check_success(pid_t child_pid, const char *name, const char *type,  in check_success()  argument
223 	ptrace(PTRACE_GETSIGINFO, child_pid, NULL, &siginfo);  in check_success()
240 		ptrace(PTRACE_SINGLESTEP, child_pid, NULL, 0);  in check_success()
245 static void ptrace_set_debugreg(pid_t child_pid, unsigned long wp_addr)  in ptrace_set_debugreg()  argument
247 	if (ptrace(PTRACE_SET_DEBUGREG, child_pid, 0, wp_addr)) {  in ptrace_set_debugreg()
253 static int ptrace_sethwdebug(pid_t child_pid, struct ppc_hw_breakpoint *info)  in ptrace_sethwdebug()  argument
255 	int wh = ptrace(PPC_PTRACE_SETHWDEBUG, child_pid, 0, info);  in ptrace_sethwdebug()
264 static void ptrace_delhwdebug(pid_t child_pid, int wh)  in ptrace_delhwdebug()  argument
266 	if (ptrace(PPC_PTRACE_DELHWDEBUG, child_pid, 0, wh) < 0) {  in ptrace_delhwdebug()
276 static int test_set_debugreg(pid_t child_pid)  in test_set_debugreg()  argument
287 		ptrace_set_debugreg(child_pid, wp_addr);  in test_set_debugreg()
288 		ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_set_debugreg()
289 		check_success(child_pid, name, "WO", wp_addr, len);  in test_set_debugreg()
297 		ptrace_set_debugreg(child_pid, wp_addr);  in test_set_debugreg()
298 		ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_set_debugreg()
299 		check_success(child_pid, name, "RO", wp_addr, len);  in test_set_debugreg()
308 		ptrace_set_debugreg(child_pid, wp_addr);  in test_set_debugreg()
309 		ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_set_debugreg()
310 		check_success(child_pid, name, "RW", wp_addr, len);  in test_set_debugreg()
313 	ptrace_set_debugreg(child_pid, 0);  in test_set_debugreg()
317 static int test_set_debugreg_kernel_userspace(pid_t child_pid)  in test_set_debugreg_kernel_userspace()  argument
327 	ptrace_set_debugreg(child_pid, wp_addr);  in test_set_debugreg_kernel_userspace()
328 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_set_debugreg_kernel_userspace()
329 	check_success(child_pid, name, "Kernel Access Userspace", wp_addr, 8);  in test_set_debugreg_kernel_userspace()
331 	ptrace_set_debugreg(child_pid, 0);  in test_set_debugreg_kernel_userspace()
350 static void test_sethwdebug_exact(pid_t child_pid)  in test_sethwdebug_exact()  argument
360 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_exact()
361 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_exact()
362 	check_success(child_pid, name, "WO", wp_addr, len);  in test_sethwdebug_exact()
363 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_exact()
367 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_exact()
368 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_exact()
369 	check_success(child_pid, name, "RO", wp_addr, len);  in test_sethwdebug_exact()
370 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_exact()
374 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_exact()
375 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_exact()
376 	check_success(child_pid, name, "RW", wp_addr, len);  in test_sethwdebug_exact()
377 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_exact()
380 static void test_sethwdebug_exact_kernel_userspace(pid_t child_pid)  in test_sethwdebug_exact_kernel_userspace()  argument
390 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_exact_kernel_userspace()
391 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_exact_kernel_userspace()
392 	check_success(child_pid, name, "Kernel Access Userspace", wp_addr, len);  in test_sethwdebug_exact_kernel_userspace()
393 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_exact_kernel_userspace()
396 static void test_sethwdebug_range_aligned(pid_t child_pid)  in test_sethwdebug_range_aligned()  argument
408 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_aligned()
409 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_aligned()
410 	check_success(child_pid, name, "WO", wp_addr, len);  in test_sethwdebug_range_aligned()
411 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_aligned()
417 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_aligned()
418 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_aligned()
419 	check_success(child_pid, name, "RO", wp_addr, len);  in test_sethwdebug_range_aligned()
420 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_aligned()
426 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_aligned()
427 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_aligned()
428 	check_success(child_pid, name, "RW", wp_addr, len);  in test_sethwdebug_range_aligned()
429 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_aligned()
432 static void test_multi_sethwdebug_range(pid_t child_pid)  in test_multi_sethwdebug_range()  argument
449 	wh1 = ptrace_sethwdebug(child_pid, &info1);  in test_multi_sethwdebug_range()
452 	wh2 = ptrace_sethwdebug(child_pid, &info2);  in test_multi_sethwdebug_range()
454 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_multi_sethwdebug_range()
455 	check_success(child_pid, name1, "WO", wp_addr1, len1);  in test_multi_sethwdebug_range()
457 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_multi_sethwdebug_range()
458 	check_success(child_pid, name2, "RO", wp_addr2, len2);  in test_multi_sethwdebug_range()
460 	ptrace_delhwdebug(child_pid, wh1);  in test_multi_sethwdebug_range()
461 	ptrace_delhwdebug(child_pid, wh2);  in test_multi_sethwdebug_range()
464 static void test_multi_sethwdebug_range_dawr_overlap(pid_t child_pid)  in test_multi_sethwdebug_range_dawr_overlap()  argument
480 	wh1 = ptrace_sethwdebug(child_pid, &info1);  in test_multi_sethwdebug_range_dawr_overlap()
483 	wh2 = ptrace_sethwdebug(child_pid, &info2);  in test_multi_sethwdebug_range_dawr_overlap()
485 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_multi_sethwdebug_range_dawr_overlap()
486 	check_success(child_pid, name, "WO", wp_addr1, len1);  in test_multi_sethwdebug_range_dawr_overlap()
488 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_multi_sethwdebug_range_dawr_overlap()
489 	check_success(child_pid, name, "RO", wp_addr2, len2);  in test_multi_sethwdebug_range_dawr_overlap()
491 	ptrace_delhwdebug(child_pid, wh1);  in test_multi_sethwdebug_range_dawr_overlap()
492 	ptrace_delhwdebug(child_pid, wh2);  in test_multi_sethwdebug_range_dawr_overlap()
495 static void test_sethwdebug_range_unaligned(pid_t child_pid)  in test_sethwdebug_range_unaligned()  argument
507 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_unaligned()
508 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_unaligned()
509 	check_success(child_pid, name, "WO", wp_addr, len);  in test_sethwdebug_range_unaligned()
510 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_unaligned()
516 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_unaligned()
517 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_unaligned()
518 	check_success(child_pid, name, "RO", wp_addr, len);  in test_sethwdebug_range_unaligned()
519 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_unaligned()
525 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_unaligned()
526 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_unaligned()
527 	check_success(child_pid, name, "RW", wp_addr, len);  in test_sethwdebug_range_unaligned()
528 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_unaligned()
532 static void test_sethwdebug_range_unaligned_dar(pid_t child_pid)  in test_sethwdebug_range_unaligned_dar()  argument
544 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_range_unaligned_dar()
545 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_range_unaligned_dar()
546 	check_success(child_pid, name, "RW", wp_addr, len);  in test_sethwdebug_range_unaligned_dar()
547 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_range_unaligned_dar()
550 static void test_sethwdebug_dawr_max_range(pid_t child_pid)  in test_sethwdebug_dawr_max_range()  argument
562 	wh = ptrace_sethwdebug(child_pid, &info);  in test_sethwdebug_dawr_max_range()
563 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in test_sethwdebug_dawr_max_range()
564 	check_success(child_pid, name, "RW", wp_addr, len);  in test_sethwdebug_dawr_max_range()
565 	ptrace_delhwdebug(child_pid, wh);  in test_sethwdebug_dawr_max_range()
570 run_tests(pid_t child_pid, struct ppc_debug_info *dbginfo, bool dawr)  in run_tests()  argument
572 	test_set_debugreg(child_pid);  in run_tests()
573 	test_set_debugreg_kernel_userspace(child_pid);  in run_tests()
574 	test_sethwdebug_exact(child_pid);  in run_tests()
575 	test_sethwdebug_exact_kernel_userspace(child_pid);  in run_tests()
577 		test_sethwdebug_range_aligned(child_pid);  in run_tests()
579 			test_sethwdebug_range_unaligned(child_pid);  in run_tests()
580 			test_sethwdebug_range_unaligned_dar(child_pid);  in run_tests()
581 			test_sethwdebug_dawr_max_range(child_pid);  in run_tests()
583 				test_multi_sethwdebug_range(child_pid);  in run_tests()
584 				test_multi_sethwdebug_range_dawr_overlap(child_pid);  in run_tests()
592 	pid_t child_pid;  in ptrace_hwbreak()  local
596 	child_pid = fork();  in ptrace_hwbreak()
597 	if (!child_pid) {  in ptrace_hwbreak()
604 	get_dbginfo(child_pid, &dbginfo);  in ptrace_hwbreak()
608 	run_tests(child_pid, &dbginfo, dawr);  in ptrace_hwbreak()
611 	ptrace(PTRACE_CONT, child_pid, NULL, 0);  in ptrace_hwbreak()