Support processing microdump for mips architecture

Based on changes for ARM, ARM64 and X86, the support for
MIPS and MIPS64 is added in microdump.

TEST=microdump_stackwalk  ~/microdump-mips32.dmp symbols/
BUG=microdump_stackwalk failing for mips architectures

Review URL: https://codereview.chromium.org/1731923002/

6 files changed, 252 insertions, 6 deletions

diff --git a/src/processor/microdump.cc b/src/processor/microdump.cc
index e3dececb..06211e60 100644
--- a/src/processor/microdump.cc
+++ b/src/processor/microdump.cc
@@ -61,6 +61,8 @@ static const char kStackFirstLineKey[] = ": S 0 ";
 static const char kArmArchitecture[] = "arm";
 static const char kArm64Architecture[] = "arm64";
 static const char kX86Architecture[] = "x86";
+static const char kMipsArchitecture[] = "mips";
+static const char kMips64Architecture[] = "mips64";
 static const char kGpuUnknown[] = "UNKNOWN";
 
 template<typename T>
@@ -131,6 +133,18 @@ void MicrodumpContext::SetContextX86(MDRawContextX86* x86) {
   valid_ = true;
 }
 
+void MicrodumpContext::SetContextMIPS(MDRawContextMIPS* mips) {
+  DumpContext::SetContextFlags(MD_CONTEXT_MIPS);
+  DumpContext::SetContextMIPS(mips);
+  valid_ = true;
+}
+
+void MicrodumpContext::SetContextMIPS64(MDRawContextMIPS* mips64) {
+  DumpContext::SetContextFlags(MD_CONTEXT_MIPS64);
+  DumpContext::SetContextMIPS(mips64);
+  valid_ = true;
+}
+
 
 //
 // MicrodumpMemoryRegion
@@ -281,8 +295,9 @@ Microdump::Microdump(const string& contents)
       std::vector<uint8_t> cpu_state_raw = ParseHexBuf(cpu_state_str);
       if (strcmp(arch.c_str(), kArmArchitecture) == 0) {
         if (cpu_state_raw.size() != sizeof(MDRawContextARM)) {
-          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size() <<
-              " bytes instead of " << sizeof(MDRawContextARM) << std::endl;
+          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size()
+                    << " bytes instead of " << sizeof(MDRawContextARM)
+                    << std::endl;
           continue;
         }
         MDRawContextARM* arm = new MDRawContextARM();
@@ -290,8 +305,9 @@ Microdump::Microdump(const string& contents)
         context_->SetContextARM(arm);
       } else if (strcmp(arch.c_str(), kArm64Architecture) == 0) {
         if (cpu_state_raw.size() != sizeof(MDRawContextARM64)) {
-          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size() <<
-              " bytes instead of " << sizeof(MDRawContextARM64) << std::endl;
+          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size()
+                    << " bytes instead of " << sizeof(MDRawContextARM64)
+                    << std::endl;
           continue;
         }
         MDRawContextARM64* arm = new MDRawContextARM64();
@@ -299,13 +315,34 @@ Microdump::Microdump(const string& contents)
         context_->SetContextARM64(arm);
       } else if (strcmp(arch.c_str(), kX86Architecture) == 0) {
         if (cpu_state_raw.size() != sizeof(MDRawContextX86)) {
-          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size() <<
-              " bytes instead of " << sizeof(MDRawContextX86) << std::endl;
+          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size()
+                    << " bytes instead of " << sizeof(MDRawContextX86)
+                    << std::endl;
           continue;
         }
         MDRawContextX86* x86 = new MDRawContextX86();
         memcpy(x86, &cpu_state_raw[0], cpu_state_raw.size());
         context_->SetContextX86(x86);
+      } else if (strcmp(arch.c_str(), kMipsArchitecture) == 0) {
+        if (cpu_state_raw.size() != sizeof(MDRawContextMIPS)) {
+          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size()
+                    << " bytes instead of " << sizeof(MDRawContextMIPS)
+                    << std::endl;
+          continue;
+        }
+        MDRawContextMIPS* mips = new MDRawContextMIPS();
+        memcpy(mips, &cpu_state_raw[0], cpu_state_raw.size());
+        context_->SetContextMIPS(mips);
+      } else if (strcmp(arch.c_str(), kMips64Architecture) == 0) {
+        if (cpu_state_raw.size() != sizeof(MDRawContextMIPS)) {
+          std::cerr << "Malformed CPU context. Got " << cpu_state_raw.size()
+                    << " bytes instead of " << sizeof(MDRawContextMIPS)
+                    << std::endl;
+          continue;
+        }
+        MDRawContextMIPS* mips64 = new MDRawContextMIPS();
+        memcpy(mips64, &cpu_state_raw[0], cpu_state_raw.size());
+        context_->SetContextMIPS64(mips64);
       } else {
         std::cerr << "Unsupported architecture: " << arch << std::endl;
       }
diff --git a/src/processor/microdump_processor_unittest.cc b/src/processor/microdump_processor_unittest.cc
index a507b627..898b65b2 100644
--- a/src/processor/microdump_processor_unittest.cc
+++ b/src/processor/microdump_processor_unittest.cc
@@ -223,6 +223,48 @@ TEST_F(MicrodumpProcessorTest, TestProcessMultiple) {
   ASSERT_EQ(2U, state.threads()->at(0)->frames()->size());
 }
 
+TEST_F(MicrodumpProcessorTest, TestProcessMips) {
+  ProcessState state;
+  AnalyzeDump("microdump-mips32.dmp", false /* omit_symbols */,
+              2 /* expected_cpu_count */, &state);
+
+  ASSERT_EQ(7U, state.modules()->module_count());
+  ASSERT_EQ("mips", state.system_info()->cpu);
+  ASSERT_EQ("3.0.8-g893bf16 #7 SMP PREEMPT Fri Jul 10 15:20:59 PDT 2015",
+      state.system_info()->os_version);
+  ASSERT_EQ(4U, state.threads()->at(0)->frames()->size());
+
+  ASSERT_EQ("blaTest",
+            state.threads()->at(0)->frames()->at(0)->function_name);
+  ASSERT_EQ("Crash",
+            state.threads()->at(0)->frames()->at(1)->function_name);
+  ASSERT_EQ("main",
+            state.threads()->at(0)->frames()->at(2)->function_name);
+  ASSERT_EQ("crash_example",
+            state.threads()->at(0)->frames()->at(0)->module->debug_file());
+}
+
+TEST_F(MicrodumpProcessorTest, TestProcessMips64) {
+  ProcessState state;
+  AnalyzeDump("microdump-mips64.dmp", false /* omit_symbols */,
+              1 /* expected_cpu_count */, &state);
+
+  ASSERT_EQ(7U, state.modules()->module_count());
+  ASSERT_EQ("mips64", state.system_info()->cpu);
+  ASSERT_EQ("3.10.0-gf185e20 #112 PREEMPT Mon Oct 5 11:12:49 PDT 2015",
+        state.system_info()->os_version);
+  ASSERT_EQ(4U, state.threads()->at(0)->frames()->size());
+
+  ASSERT_EQ("blaTest",
+            state.threads()->at(0)->frames()->at(0)->function_name);
+  ASSERT_EQ("Crash",
+            state.threads()->at(0)->frames()->at(1)->function_name);
+  ASSERT_EQ("main",
+            state.threads()->at(0)->frames()->at(2)->function_name);
+  ASSERT_EQ("crash_example",
+            state.threads()->at(0)->frames()->at(0)->module->debug_file());
+}
+
 }  // namespace
 
 int main(int argc, char* argv[]) {
diff --git a/src/processor/testdata/microdump-mips32.dmp b/src/processor/testdata/microdump-mips32.dmp
new file mode 100644
index 00000000..1b02fa9f
--- /dev/null
+++ b/src/processor/testdata/microdump-mips32.dmp
@@ -0,0 +1,37 @@
+F/google-breakpad(11976): -----BEGIN BREAKPAD MICRODUMP-----
+F/google-breakpad(11976): V UNKNOWN:0.0.0.0
+F/google-breakpad(11976): O A mips 02 mips 3.0.8-g893bf16 #7 SMP PREEMPT Fri Jul 10 15:20:59 PDT 2015
+F/google-breakpad(11976): G UNKNOWN
+F/google-breakpad(11976): S 0 7F92FC38 7F92F000 00002000
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+F/google-breakpad(11976): M 77C0E000 00000000 0006D000 8F36148CC4647A8116CAF2A25F591F570 crash_example
+F/google-breakpad(11976): M 77A9B000 00000000 00012000 3A1A14AAD5B1EB3BC54F2E1C36CE3ACB0 libnetd_client.so
+F/google-breakpad(11976): M 77ACD000 00000000 00012000 E8FC3CD6F45E059AD5849A4BEE176D0F0 libstdc++.so
+F/google-breakpad(11976): M 77ADF000 00000000 00024000 07C6570597295683DE36D8FE97E6AEC30 libm.so
+F/google-breakpad(11976): M 77B03000 00000000 000CB000 D1E0DFA8390BAADD25564F8B0E139FF90 libc.so
+F/google-breakpad(11976): M 77BD7000 00000000 00012000 EC0B4DDBEFC52282C34AF60EEEB8EAAA0 liblog.so
+F/google-breakpad(11976): M 77BE9000 00000000 00014000 8C70B1BF8FBAC1170EB21E350AB2E7580 linker
+F/google-breakpad(11976): -----END BREAKPAD MICRODUMP-----
+
diff --git a/src/processor/testdata/microdump-mips64.dmp b/src/processor/testdata/microdump-mips64.dmp
new file mode 100644
index 00000000..e8ead871
--- /dev/null
+++ b/src/processor/testdata/microdump-mips64.dmp
@@ -0,0 +1,26 @@
+02-23 15:49:14.700  1740  1739 F google-breakpad: -----BEGIN BREAKPAD MICRODUMP-----
+02-23 15:49:14.700  1740  1739 F google-breakpad: V UNKNOWN:0.0.0.0
+02-23 15:49:14.702  1740  1739 F google-breakpad: O A mips64 01 mips64 3.10.0-gf185e20 #112 PREEMPT Mon Oct 5 11:12:49 PDT 2015
+02-23 15:49:14.702  1740  1739 F google-breakpad: G UNKNOWN
+02-23 15:49:14.702  1740  1739 F google-breakpad: S 0 000000FFFFCCF650 000000FFFFCCF000 0000000000001000
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diff --git a/src/processor/testdata/symbols/microdump/crash_example/6E72E2F1A5F59AB3D51356FDFE394D490/crash_example.sym b/src/processor/testdata/symbols/microdump/crash_example/6E72E2F1A5F59AB3D51356FDFE394D490/crash_example.sym
new file mode 100644
index 00000000..a5e31a06
--- /dev/null
+++ b/src/processor/testdata/symbols/microdump/crash_example/6E72E2F1A5F59AB3D51356FDFE394D490/crash_example.sym
@@ -0,0 +1,56 @@
+MODULE Linux mips 6E72E2F1A5F59AB3D51356FDFE394D490 crash_example
+FILE 0 /s/breakpad/src/tools/linux/crash_example.cc
+FUNC 80a8 9c 0 google_breakpad::MinidumpDescriptor::MinidumpDescriptor
+80a8 20 75 8
+80c8 38 78 8
+8100 10 78 8
+8110 14 78 8
+8124 10 78 8
+8134 10 78 8
+FUNC 815c a0 0 DumpCallback
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+8188 1c 14 37
+81a4 14 15 37
+81b8 1c 15 37
+81d4 14 17 37
+81e8 4 18 37
+81ec 10 19 37
+FUNC 81fc 2c 0 Leaf
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+820c 8 22 37
+8214 8 23 37
+821c 4 25 37
+8220 8 26 37
+FUNC 8228 58 0 blaTest
+8228 1c 28 37
+8244 c 29 37
+8250 20 30 37
+8270 10 31 37
+FUNC 8280 40 0 Crash
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+8298 4 34 37
+829c 14 35 37
+82b0 10 36 37
+FUNC 831c f4 0 main
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+8348 c 40 37
+8354 18 41 37
+836c 34 43 37
+83a0 10 44 37
+83b0 4 45 37
+83b4 14 43 37
+83c8 18 45 37
+83e0 30 46 37
+PUBLIC 831c 0 main
+STACK CFI INIT 8228 58 .cfa: $sp 0 + .ra: $ra
+STACK CFI 822c .cfa: $sp 32 +
+STACK CFI 8234 $gp: .cfa -16 + ^ .ra: .cfa -8 + ^
+STACK CFI 827c $gp: $gp .cfa: $sp 0 + .ra: .ra
+STACK CFI INIT 8280 40 .cfa: $sp 0 + .ra: $ra
+STACK CFI 8284 .cfa: $sp 32 +
+STACK CFI 828c $gp: .cfa -16 + ^ .ra: .cfa -8 + ^
+STACK CFI 82bc $gp: $gp .cfa: $sp 0 + .ra: .ra
+STACK CFI INIT 831c f4 .cfa: $sp 0 + .ra: $ra
+STACK CFI 8320 .cfa: $sp 352 +
+STACK CFI 832c $gp: .cfa -16 + ^ $s0: .cfa -24 + ^ .ra: .cfa -8 + ^
+STACK CFI 840c $gp: $gp $s0: $s0 .cfa: $sp 0 + .ra: .ra
diff --git a/src/processor/testdata/symbols/microdump/crash_example/8F36148CC4647A8116CAF2A25F591F570/crash_example.sym b/src/processor/testdata/symbols/microdump/crash_example/8F36148CC4647A8116CAF2A25F591F570/crash_example.sym
new file mode 100644
index 00000000..407d2305
--- /dev/null
+++ b/src/processor/testdata/symbols/microdump/crash_example/8F36148CC4647A8116CAF2A25F591F570/crash_example.sym
@@ -0,0 +1,48 @@
+MODULE Linux mips 8F36148CC4647A8116CAF2A25F591F570 crash_example
+FILE 0 /home/rtrk/chromium_mips/chromium/src/out-android-mips/Debug/../../breakpad/src/tools/linux/crash_example.cc
+FUNC 2ea4 b4 0 google_breakpad::MinidumpDescriptor::MinidumpDescriptor
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+2ec4 40 78 6
+2f04 18 78 6
+2f1c 14 78 6
+2f30 18 78 6
+2f48 10 78 6
+FUNC 2f6c c4 0 DumpCallback
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+2fd8 28 15 33
+3000 1c 17 33
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+3020 10 19 33
+FUNC 3030 28 0 Leaf
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+3034 c 22 33
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+3050 8 26 33
+FUNC 3058 60 0 blaTest
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+3074 c 29 33
+3080 28 30 33
+30a8 10 31 33
+FUNC 30b8 48 0 Crash
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+30d0 4 34 33
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+30f0 10 36 33
+FUNC 316c 120 0 main
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+3190 c 40 33
+319c 20 41 33
+31bc 40 43 33
+31fc 18 44 33
+3214 4 45 33
+3218 1c 43 33
+3234 20 45 33
+3254 38 46 33
+PUBLIC 316c 0 main
+STACK CFI INIT 30b8 48 .cfa: $sp 39792944 + .ra: $ra
+STACK CFI 30c8 .cfa: $sp 40 +
+STACK CFI 30d0 .ra: .cfa -4 + ^
+STACK CFI 30f8 .cfa: $sp 0 + .ra: .ra