65 static void check_hw_feature_supported(pid_t child, HwFeature feature) {  in check_hw_feature_supported()  argument
69   long result = ptrace(PTRACE_GETHBPREGS, child, 0, &capabilities);  in check_hw_feature_supported()
93   long result = ptrace(PTRACE_GETREGSET, child,  in check_hw_feature_supported()
107   UNUSED(child);  in check_hw_feature_supported()
112 static void set_watchpoint(pid_t child, uintptr_t address, size_t size) {  in set_watchpoint()  argument
121   ASSERT_EQ(0, ptrace(PTRACE_SETHBPREGS, child, -1, &address)) << strerror(errno);  in set_watchpoint()
122   ASSERT_EQ(0, ptrace(PTRACE_SETHBPREGS, child, -2, &control)) << strerror(errno);  in set_watchpoint()
133   ASSERT_EQ(0, ptrace(PTRACE_SETREGSET, child, NT_ARM_HW_WATCH, &iov)) << strerror(errno);  in set_watchpoint()
136 …ASSERT_EQ(0, ptrace(PTRACE_POKEUSER, child, offsetof(user, u_debugreg[0]), address)) << strerror(e…  in set_watchpoint()
138   unsigned data = ptrace(PTRACE_PEEKUSER, child, offsetof(user, u_debugreg[7]), nullptr);  in set_watchpoint()
149 …ASSERT_EQ(0, ptrace(PTRACE_POKEUSER, child, offsetof(user, u_debugreg[7]), data)) << strerror(errn…  in set_watchpoint()
151   UNUSED(child);  in set_watchpoint()
161   pid_t child = fork();  in run_watchpoint_test()  local
162   ASSERT_NE(-1, child) << strerror(errno);  in run_watchpoint_test()
163   if (child == 0) {  in run_watchpoint_test()
179   ChildGuard guard(child);  in run_watchpoint_test()
182   ASSERT_EQ(child, TEMP_FAILURE_RETRY(waitpid(child, &status, __WALL))) << strerror(errno);  in run_watchpoint_test()
186   check_hw_feature_supported(child, HwFeature::Watchpoint);  in run_watchpoint_test()
191   set_watchpoint(child, uintptr_t(untag_address(&data)) + offset, size);  in run_watchpoint_test()
193   ASSERT_EQ(0, ptrace(PTRACE_CONT, child, nullptr, nullptr)) << strerror(errno);  in run_watchpoint_test()
194   ASSERT_EQ(child, TEMP_FAILURE_RETRY(waitpid(child, &status, __WALL))) << strerror(errno);  in run_watchpoint_test()
199   ASSERT_EQ(0, ptrace(PTRACE_GETSIGINFO, child, nullptr, &siginfo)) << strerror(errno);  in run_watchpoint_test()
300 static void set_breakpoint(pid_t child) {  in set_breakpoint()  argument
309   ASSERT_EQ(0, ptrace(PTRACE_SETHBPREGS, child, 1, &address)) << strerror(errno);  in set_breakpoint()
310   ASSERT_EQ(0, ptrace(PTRACE_SETHBPREGS, child, 2, &control)) << strerror(errno);  in set_breakpoint()
321   ASSERT_EQ(0, ptrace(PTRACE_SETREGSET, child, NT_ARM_HW_BREAK, &iov)) << strerror(errno);  in set_breakpoint()
324   ASSERT_EQ(0, ptrace(PTRACE_POKEUSER, child, offsetof(user, u_debugreg[0]), address))  in set_breakpoint()
327   unsigned data = ptrace(PTRACE_PEEKUSER, child, offsetof(user, u_debugreg[7]), nullptr);  in set_breakpoint()
338   ASSERT_EQ(0, ptrace(PTRACE_POKEUSER, child, offsetof(user, u_debugreg[7]), data))  in set_breakpoint()
341   UNUSED(child);  in set_breakpoint()
349   pid_t child = fork();  in TEST()  local
350   ASSERT_NE(-1, child) << strerror(errno);  in TEST()
351   if (child == 0) breakpoint_fork_child();  in TEST()
353   ChildGuard guard(child);  in TEST()
356   ASSERT_EQ(child, TEMP_FAILURE_RETRY(waitpid(child, &status, __WALL))) << strerror(errno);  in TEST()
360   check_hw_feature_supported(child, HwFeature::Breakpoint);  in TEST()
365   set_breakpoint(child);  in TEST()
367   ASSERT_EQ(0, ptrace(PTRACE_CONT, child, nullptr, nullptr)) << strerror(errno);  in TEST()
368   ASSERT_EQ(child, TEMP_FAILURE_RETRY(waitpid(child, &status, __WALL))) << strerror(errno);  in TEST()
373   ASSERT_EQ(0, ptrace(PTRACE_GETSIGINFO, child, nullptr, &siginfo)) << strerror(errno);  in TEST()