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1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //    http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #include "DebugAndroid.hpp"
16 
17 #include <stdlib.h>
18 #include <unistd.h>
19 #include <sys/types.h>
20 #include <cutils/properties.h>
21 
AndroidEnterDebugger()22 void AndroidEnterDebugger()
23 {
24 	ALOGE(__FUNCTION__);
25 #ifndef NDEBUG
26 	static volatile int * const makefault = nullptr;
27 	char value[PROPERTY_VALUE_MAX];
28 	property_get("debug.db.uid", value, "-1");
29 	int debug_uid = atoi(value);
30 	if((debug_uid >= 0) && (geteuid() < static_cast<uid_t>(debug_uid)))
31 	{
32 		ALOGE("Waiting for debugger: gdbserver :${PORT} --attach %u. Look for thread %u", getpid(), gettid());
33 		volatile int waiting = 1;
34 		while (waiting) {
35 			sleep(1);
36 		}
37 	}
38 	else
39 	{
40 		ALOGE("No debugger");
41 	}
42 #endif
43 }
44 
trace(const char * format,...)45 void trace(const char *format, ...)
46 {
47 #ifndef NDEBUG
48 	va_list vararg;
49 	va_start(vararg, format);
50 	android_vprintLog(ANDROID_LOG_VERBOSE, NULL, LOG_TAG, format, vararg);
51 	va_end(vararg);
52 #endif
53 }
54