third_party/pigweed/repo/pw_cpu_exception_armv7m/proto_dump.cc

   1 // Copyright 2020 The Pigweed Authors
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
   4 // use this file except in compliance with the License. You may obtain a copy of
   5 // the License at
   6 //
   7 //     https://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  12 // License for the specific language governing permissions and limitations under
  13 // the License.
  14 #include "pw_cpu_exception_armv7m/cpu_state.h"
  15 #include "pw_cpu_exception_armv7m_protos/cpu_state.pwpb.h"
  16 #include "pw_preprocessor/compiler.h"
  17 #include "pw_protobuf/encoder.h"
  18
  19 namespace pw::cpu_exception {
  20
  21 Status DumpCpuStateProto(protobuf::Encoder& dest,
  22                          const pw_CpuExceptionState& cpu_state) {
  23   armv7m::ArmV7mCpuState::Encoder state_encoder(&dest);
  24
  25   // Special and mem-mapped registers.
  26   state_encoder.WritePc(cpu_state.base.pc);
  27   state_encoder.WriteLr(cpu_state.base.lr);
  28   state_encoder.WritePsr(cpu_state.base.psr);
  29   state_encoder.WriteMsp(cpu_state.extended.msp);
  30   state_encoder.WritePsp(cpu_state.extended.psp);
  31   state_encoder.WriteExcReturn(cpu_state.extended.exc_return);
  32   state_encoder.WriteCfsr(cpu_state.extended.cfsr);
  33   state_encoder.WriteMmfar(cpu_state.extended.mmfar);
  34   state_encoder.WriteBfar(cpu_state.extended.bfar);
  35   state_encoder.WriteIcsr(cpu_state.extended.icsr);
  36   state_encoder.WriteHfsr(cpu_state.extended.hfsr);
  37   state_encoder.WriteShcsr(cpu_state.extended.shcsr);
  38   state_encoder.WriteControl(cpu_state.extended.control);
  39
  40   // General purpose registers.
  41   state_encoder.WriteR0(cpu_state.base.r0);
  42   state_encoder.WriteR1(cpu_state.base.r1);
  43   state_encoder.WriteR2(cpu_state.base.r2);
  44   state_encoder.WriteR3(cpu_state.base.r3);
  45   state_encoder.WriteR4(cpu_state.extended.r4);
  46   state_encoder.WriteR5(cpu_state.extended.r5);
  47   state_encoder.WriteR6(cpu_state.extended.r6);
  48   state_encoder.WriteR7(cpu_state.extended.r7);
  49   state_encoder.WriteR8(cpu_state.extended.r8);
  50   state_encoder.WriteR9(cpu_state.extended.r9);
  51   state_encoder.WriteR10(cpu_state.extended.r10);
  52   state_encoder.WriteR11(cpu_state.extended.r11);
  53
  54   // If the encode buffer was exhausted in an earlier write, it will be
  55   // reflected here.
  56   Status status = state_encoder.WriteR12(cpu_state.base.r12);
  57   if (!status.ok()) {
  58     return status == Status::ResourceExhausted() ? Status::ResourceExhausted()
  59                                                  : Status::Unknown();
  60   }
  61   return Status::Ok();
  62 }
  63
  64 }  // namespace pw::cpu_exception