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Applied debug-interface-specific access restrictions for memory and registers

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2024-12-07 16:43:16 +00:00
parent 289919f330
commit cbfbd9f4b8
11 changed files with 78 additions and 25 deletions
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19
src/Targets/Microchip/AVR8/Avr8.cpp
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@@ -328,7 +328,7 @@ namespace Targets::Microchip::Avr8
// The debug interface may have its own access restrictions for registers.
for (auto& [peripheralKey, peripheral] : descriptor.peripheralDescriptorsByKey) {
for (auto& [groupKey, registerGroup] : peripheral.registerGroupDescriptorsByKey) {
this->applyDebugInterfaceRegisterAccessRestrictions(
this->applyDebugInterfaceAccessRestrictions(
registerGroup,
descriptor.getAddressSpaceDescriptor(registerGroup.addressSpaceKey)
);
@@ -781,23 +781,16 @@ namespace Targets::Microchip::Avr8
this->writeRegisters({{descriptor, value}});
}
void Avr8::applyDebugInterfaceRegisterAccessRestrictions(
void Avr8::applyDebugInterfaceAccessRestrictions(
TargetRegisterGroupDescriptor& groupDescriptor,
const TargetAddressSpaceDescriptor& addressSpaceDescriptor
) {
for (auto& [subgroupKey, subgroupDescriptor] : groupDescriptor.subgroupDescriptorsByKey) {
this->applyDebugInterfaceRegisterAccessRestrictions(subgroupDescriptor, addressSpaceDescriptor);
for (auto& [registerKey, registerDescriptor] : groupDescriptor.registerDescriptorsByKey) {
this->avr8DebugInterface->applyAccessRestrictions(registerDescriptor, addressSpaceDescriptor);
}
for (auto& [registerKey, registerDescriptor] : groupDescriptor.registerDescriptorsByKey) {
if (!registerDescriptor.access.readable && !registerDescriptor.access.writable) {
// This register is already inaccessible - no need to check for further restrictions
continue;
}
const auto access = this->avr8DebugInterface->getRegisterAccess(registerDescriptor, addressSpaceDescriptor);
registerDescriptor.access.readable = registerDescriptor.access.readable && access.readable;
registerDescriptor.access.writable = registerDescriptor.access.writable && access.writable;
for (auto& [subgroupKey, subgroupDescriptor] : groupDescriptor.subgroupDescriptorsByKey) {
this->applyDebugInterfaceAccessRestrictions(subgroupDescriptor, addressSpaceDescriptor);
}
}

2
src/Targets/Microchip/AVR8/Avr8.hpp
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@@ -169,7 +169,7 @@ namespace Targets::Microchip::Avr8
TargetMemoryBuffer readRegister(const TargetRegisterDescriptor& descriptor);
void writeRegister(const TargetRegisterDescriptor& descriptor, const TargetMemoryBuffer& value) ;
void applyDebugInterfaceRegisterAccessRestrictions(
void applyDebugInterfaceAccessRestrictions(
TargetRegisterGroupDescriptor& groupDescriptor,
const TargetAddressSpaceDescriptor& addressSpaceDescriptor
);