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Corrected infinite recursion bug with EDBG Avr8 memory read implementation

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2021-04-07 23:30:30 +01:00
parent 509ff084cd
commit fae2a2af34
4 changed files with 47 additions and 31 deletions
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6
CMakeLists.txt
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@@ -39,8 +39,11 @@ add_executable(Bloom
src/SignalHandler/SignalHandler.cpp src/SignalHandler/SignalHandler.cpp
src/DebugToolDrivers/USB/Interface.cpp src/DebugToolDrivers/USB/Interface.cpp
src/DebugToolDrivers/USB/HID/HidInterface.cpp src/DebugToolDrivers/USB/HID/HidInterface.cpp
src/DebugToolDrivers/Microchip/AtmelICE/AtmelIce.cpp src/DebugToolDrivers/Microchip/AtmelICE/AtmelIce.cpp
src/DebugToolDrivers/Microchip/PowerDebugger/PowerDebugger.cpp src/DebugToolDrivers/Microchip/PowerDebugger/PowerDebugger.cpp
src/DebugToolDrivers/Microchip/MplabSnap/MplabSnap.cpp
src/DebugToolDrivers/Protocols/CMSIS-DAP/Command.cpp src/DebugToolDrivers/Protocols/CMSIS-DAP/Command.cpp
src/DebugToolDrivers/Protocols/CMSIS-DAP/Response.cpp src/DebugToolDrivers/Protocols/CMSIS-DAP/Response.cpp
src/DebugToolDrivers/Protocols/CMSIS-DAP/VendorSpecific/EDBG/AVR/AvrCommand.cpp src/DebugToolDrivers/Protocols/CMSIS-DAP/VendorSpecific/EDBG/AVR/AvrCommand.cpp
@@ -142,7 +145,8 @@ target_compile_options(
PUBLIC -Wconversion PUBLIC -Wconversion
PUBLIC -fno-sized-deallocation PUBLIC -fno-sized-deallocation
PUBLIC $<$<CONFIG:DEBUG>:-g> PUBLIC $<$<CONFIG:DEBUG>:-g>
PUBLIC $<$<CONFIG:DEBUG>:-Os> PUBLIC $<$<CONFIG:DEBUG>:-O0>
# PUBLIC $<$<CONFIG:DEBUG>:-Os>
PUBLIC $<$<CONFIG:RELEASE>:-O2> PUBLIC $<$<CONFIG:RELEASE>:-O2>
PUBLIC $<$<CONFIG:DEBUG>:-fno-inline> PUBLIC $<$<CONFIG:DEBUG>:-fno-inline>
PUBLIC $<$<CONFIG:DEBUG>:-fkeep-static-functions> PUBLIC $<$<CONFIG:DEBUG>:-fkeep-static-functions>

1
src/DebugToolDrivers/DebugTools.hpp
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@@ -3,3 +3,4 @@
#include "DebugTool.hpp" #include "DebugTool.hpp"
#include "src/DebugToolDrivers/Microchip/AtmelICE/AtmelIce.hpp" #include "src/DebugToolDrivers/Microchip/AtmelICE/AtmelIce.hpp"
#include "src/DebugToolDrivers/Microchip/PowerDebugger/PowerDebugger.hpp" #include "src/DebugToolDrivers/Microchip/PowerDebugger/PowerDebugger.hpp"
#include "src/DebugToolDrivers/Microchip/MplabSnap/MplabSnap.hpp"

11
src/DebugToolDrivers/Protocols/CMSIS-DAP/VendorSpecific/EDBG/AVR/EdbgAvr8Interface.cpp
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@@ -652,7 +652,11 @@ TargetState EdbgAvr8Interface::getTargetState() {
} }
TargetMemoryBuffer EdbgAvr8Interface::readMemory(Avr8MemoryType type, std::uint32_t address, std::uint32_t bytes) { TargetMemoryBuffer EdbgAvr8Interface::readMemory(Avr8MemoryType type, std::uint32_t address, std::uint32_t bytes) {
if (type == Avr8MemoryType::FLASH_PAGE && this->targetParameters.flashPageSize.value_or(0) > 0) { if (type == Avr8MemoryType::FLASH_PAGE) {
if (this->targetParameters.flashPageSize.value_or(0) < 1) {
throw Exception("Missing/invalid flash page size parameter");
}
// Flash reads must be done in pages // Flash reads must be done in pages
auto pageSize = this->targetParameters.flashPageSize.value(); auto pageSize = this->targetParameters.flashPageSize.value();
@@ -744,11 +748,11 @@ TargetMemoryBuffer EdbgAvr8Interface::readMemory(Avr8MemoryType type, std::uint3
return memoryBuffer; return memoryBuffer;
} }
}
} else {
/* /*
* EDBG AVR8 debug tools behave in a really weird way when responding with more than two packets * EDBG AVR8 debug tools behave in a really weird way when responding with more than two packets
* for a single read memory command. The data they return in this case appears to be of little use. * for a single read (non-flash) memory command. The data they return in this case appears to be of little use.
* *
* To address this, we make sure we only issue read memory commands that will result in no more than two * To address this, we make sure we only issue read memory commands that will result in no more than two
* response packets. For calls that require more than this, we simply split them into numerous calls. * response packets. For calls that require more than this, we simply split them into numerous calls.
@@ -779,6 +783,7 @@ TargetMemoryBuffer EdbgAvr8Interface::readMemory(Avr8MemoryType type, std::uint3
return output; return output;
} }
}
auto commandFrame = CommandFrames::Avr8Generic::ReadMemory(); auto commandFrame = CommandFrames::Avr8Generic::ReadMemory();
commandFrame.setType(type); commandFrame.setType(type);

6
src/TargetController/TargetController.hpp
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@@ -85,6 +85,12 @@ namespace Bloom
return std::make_unique<PowerDebugger>(); return std::make_unique<PowerDebugger>();
} }
}, },
{
"snap",
[]() -> std::unique_ptr<DebugTool> {
return std::make_unique<MplabSnap>();
}
},
}; };
} }