================
@@ -0,0 +1,84 @@
+//===-- RegisterContextPOSIXCore_riscv64.cpp
------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "RegisterContextPOSIXCore_riscv64.h"
+
+#include "lldb/Utility/DataBufferHeap.h"
+
+using namespace lldb_private;
+
+std::unique_ptr<RegisterContextCorePOSIX_riscv64>
+RegisterContextCorePOSIX_riscv64::Create(
+ lldb_private::Thread &thread, const lldb_private::ArchSpec &arch,
+ const lldb_private::DataExtractor &gpregset,
+ llvm::ArrayRef<lldb_private::CoreNote> notes) {
+ Flags flags = 0;
+
+ auto register_info_up =
+ std::make_unique<RegisterInfoPOSIX_riscv64>(arch, flags);
+ return std::unique_ptr<RegisterContextCorePOSIX_riscv64>(
+ new RegisterContextCorePOSIX_riscv64(thread, std::move(register_info_up),
+ gpregset, notes));
+}
+
+RegisterContextCorePOSIX_riscv64::RegisterContextCorePOSIX_riscv64(
+ Thread &thread, std::unique_ptr<RegisterInfoPOSIX_riscv64> register_info,
+ const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
+ : RegisterContextPOSIX_riscv64(thread, std::move(register_info)) {
+
+ m_gpr_buffer = std::make_shared<DataBufferHeap>(gpregset.GetDataStart(),
+ gpregset.GetByteSize());
+ m_gpr.SetData(m_gpr_buffer);
+ m_gpr.SetByteOrder(gpregset.GetByteOrder());
+
+ ArchSpec arch = m_register_info_up->GetTargetArchitecture();
+ DataExtractor fpregset = getRegset(notes, arch.GetTriple(), FPR_Desc);
+ m_fpr_buffer = std::make_shared<DataBufferHeap>(fpregset.GetDataStart(),
----------------
jasonmolenda wrote:
I see in the aarch64 elf core plugin that it checks the size of the
DataExtractor object before setting the buffer to its contents, with a "must be
bigger than the smallest possible size", e.g.
```
DataExtractor mte_data = getRegset(notes, arch.GetTriple(), AARCH64_MTE_Desc);
if (mte_data.GetByteSize() >= sizeof(uint64_t))
opt_regsets.Set(RegisterInfoPOSIX_arm64::eRegsetMaskMTE);
```
Is it possible this could be called without a floating point register context?
I know in RISC-V nearly anything is possible :) but maybe realistically we're
always going to have an fpr.
https://github.com/llvm/llvm-project/pull/93297
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