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// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include "pw_cpu_exception_armv7m/cpu_state.h"
#include "pw_cpu_exception_armv7m_protos/cpu_state.pwpb.h"
#include "pw_preprocessor/compiler.h"
#include "pw_protobuf/encoder.h"
namespace pw::cpu_exception {
Status DumpCpuStateProto(protobuf::Encoder& dest,
const pw_CpuExceptionState& cpu_state) {
armv7m::ArmV7mCpuState::Encoder state_encoder(&dest);
// Special and mem-mapped registers.
state_encoder.WritePc(cpu_state.base.pc);
state_encoder.WriteLr(cpu_state.base.lr);
state_encoder.WritePsr(cpu_state.base.psr);
state_encoder.WriteMsp(cpu_state.extended.msp);
state_encoder.WritePsp(cpu_state.extended.psp);
state_encoder.WriteExcReturn(cpu_state.extended.exc_return);
state_encoder.WriteCfsr(cpu_state.extended.cfsr);
state_encoder.WriteMmfar(cpu_state.extended.mmfar);
state_encoder.WriteBfar(cpu_state.extended.bfar);
state_encoder.WriteIcsr(cpu_state.extended.icsr);
state_encoder.WriteHfsr(cpu_state.extended.hfsr);
state_encoder.WriteShcsr(cpu_state.extended.shcsr);
state_encoder.WriteControl(cpu_state.extended.control);
// General purpose registers.
state_encoder.WriteR0(cpu_state.base.r0);
state_encoder.WriteR1(cpu_state.base.r1);
state_encoder.WriteR2(cpu_state.base.r2);
state_encoder.WriteR3(cpu_state.base.r3);
state_encoder.WriteR4(cpu_state.extended.r4);
state_encoder.WriteR5(cpu_state.extended.r5);
state_encoder.WriteR6(cpu_state.extended.r6);
state_encoder.WriteR7(cpu_state.extended.r7);
state_encoder.WriteR8(cpu_state.extended.r8);
state_encoder.WriteR9(cpu_state.extended.r9);
state_encoder.WriteR10(cpu_state.extended.r10);
state_encoder.WriteR11(cpu_state.extended.r11);
// If the encode buffer was exhausted in an earlier write, it will be
// reflected here.
Status status = state_encoder.WriteR12(cpu_state.base.r12);
if (!status.ok()) {
return status == Status::ResourceExhausted() ? Status::ResourceExhausted()
: Status::Unknown();
}
return Status::Ok();
}
} // namespace pw::cpu_exception
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