From d3059e77818a058513ed92557160bdb6d5102b67 Mon Sep 17 00:00:00 2001 From: Aart Bik Date: Wed, 11 May 2016 10:30:47 -0700 Subject: Fix oatdump crash on arm64/arm code. Also adds 16 bit literal information. Rationale: When "run-away" instructions are disassembled, the literal addresses may go out of range, causing oatdump to crash. This CL guards memory access against the full memory range allocated to assembly instructions and data (it is possible but not really necessary to refine this a bit). Out of range arguments are now displayed as (?) to denote the issue, which is a lot nicer than crashing. BUG=28670871 Change-Id: I51e9b6a6a99162546fe31059f14278e8980451c2 --- compiler/optimizing/graph_visualizer.cc | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'compiler/optimizing/graph_visualizer.cc') diff --git a/compiler/optimizing/graph_visualizer.cc b/compiler/optimizing/graph_visualizer.cc index 9efc13f61b..944cd0c3ed 100644 --- a/compiler/optimizing/graph_visualizer.cc +++ b/compiler/optimizing/graph_visualizer.cc @@ -98,7 +98,9 @@ typedef Disassembler* create_disasm_prototype(InstructionSet instruction_set, DisassemblerOptions* options); class HGraphVisualizerDisassembler { public: - HGraphVisualizerDisassembler(InstructionSet instruction_set, const uint8_t* base_address) + HGraphVisualizerDisassembler(InstructionSet instruction_set, + const uint8_t* base_address, + const uint8_t* end_address) : instruction_set_(instruction_set), disassembler_(nullptr) { libart_disassembler_handle_ = dlopen(kIsDebugBuild ? "libartd-disassembler.so" : "libart-disassembler.so", RTLD_NOW); @@ -119,6 +121,7 @@ class HGraphVisualizerDisassembler { instruction_set, new DisassemblerOptions(/* absolute_addresses */ false, base_address, + end_address, /* can_read_literals */ true))); } @@ -174,7 +177,9 @@ class HGraphVisualizerPrinter : public HGraphDelegateVisitor { disassembler_(disasm_info_ != nullptr ? new HGraphVisualizerDisassembler( codegen_.GetInstructionSet(), - codegen_.GetAssembler().CodeBufferBaseAddress()) + codegen_.GetAssembler().CodeBufferBaseAddress(), + codegen_.GetAssembler().CodeBufferBaseAddress() + + codegen_.GetAssembler().CodeSize()) : nullptr), indent_(0) {} -- cgit v1.2.3-59-g8ed1b