Dump disassembly in RS after the compilation. BUG=6841435.
Change libbcc_DEBUG_MC_DISASSEMBLER in libbcc-config.mk to enable
this feature.
Change-Id: Iaac106dfa9cda1b1830ea4255807ab08b2f0e2bb
diff --git a/lib/RenderScript/RSCompilerDriver.cpp b/lib/RenderScript/RSCompilerDriver.cpp
index 60a6d9d..21d3bca 100644
--- a/lib/RenderScript/RSCompilerDriver.cpp
+++ b/lib/RenderScript/RSCompilerDriver.cpp
@@ -287,6 +287,20 @@
}
//===--------------------------------------------------------------------===//
+ // Dump the disassembly for debug when possible.
+ //===--------------------------------------------------------------------===//
+#if DEBUG_MC_DISASSEMBLER
+ OutputFile *disassembly_output =
+ new (std::nothrow) OutputFile(DEBUG_MC_DISASSEMBLER_FILE,
+ FileBase::kAppend);
+
+ if (disassembly_output != NULL) {
+ result->dumpDisassembly(*disassembly_output);
+ delete disassembly_output;
+ }
+#endif
+
+ //===--------------------------------------------------------------------===//
// Write out the RS info file.
//===--------------------------------------------------------------------===//
// Note that write failure only results in a warning since the source is
diff --git a/lib/RenderScript/RSExecutable.cpp b/lib/RenderScript/RSExecutable.cpp
index e18167a..aa6d411 100644
--- a/lib/RenderScript/RSExecutable.cpp
+++ b/lib/RenderScript/RSExecutable.cpp
@@ -16,6 +16,8 @@
#include "bcc/RenderScript/RSExecutable.h"
+#include "bcc/Config/Config.h"
+#include "bcc/Support/Disassembler.h"
#include "bcc/Support/FileBase.h"
#include "bcc/Support/Log.h"
#include "bcc/Support/OutputFile.h"
@@ -157,6 +159,48 @@
return true;
}
+void RSExecutable::dumpDisassembly(OutputFile &pOutput) const {
+#if DEBUG_MC_DISASSEMBLER
+ if (pOutput.hasError()) {
+ return;
+ }
+
+ // Get MC codegen emitted function name list.
+ android::Vector<const char *> func_list;
+
+ if (!mLoader->getSymbolNameList(func_list, ObjectLoader::kFunctionType)) {
+ ALOGW("Failed to get the list of function name in %s for disassembly!",
+ mObjFile->getName().c_str());
+ } else {
+ // Disassemble each function
+ for (size_t i = 0, e = func_list.size(); i != e; i++) {
+ const char* func_name = func_list[i];
+ void *func = mLoader->getSymbolAddress(func_name);
+ size_t func_size = mLoader->getSymbolSize(func_name);
+
+ if (func == NULL) {
+ continue;
+ }
+ DisassembleResult result =
+ Disassemble(pOutput, DEFAULT_TARGET_TRIPLE_STRING, func_name,
+ reinterpret_cast<const uint8_t *>(func), func_size);
+
+ if (result != kDisassembleSuccess) {
+ ALOGW("Failed to disassemble the function %s in %s (error code=%zu)!",
+ func_name, mObjFile->getName().c_str(), result);
+
+ if (result != kDisassembleInvalidInstruction) {
+ ALOGW("And the error occured in disassembler is fatal. Abort "
+ "disassembler on remaining functions!");
+ break;
+ }
+ }
+ }
+ }
+#endif
+ return;
+}
+
RSExecutable::~RSExecutable() {
syncInfo();
delete mInfo;