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//===-- NativeRegisterContextDBReg_loongarch.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 "NativeRegisterContextDBReg_loongarch.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/RegisterValue.h"
using namespace lldb_private;
uint32_t
NativeRegisterContextDBReg_loongarch::GetWatchpointSize(uint32_t wp_index) {
Log *log = GetLog(LLDBLog::Watchpoints);
LLDB_LOG(log, "wp_index: {0}", wp_index);
switch ((m_hwp_regs[wp_index].control >> 10) & 0x3) {
case 0x0:
return 8;
case 0x1:
return 4;
case 0x2:
return 2;
case 0x3:
return 1;
default:
return 0;
}
}
std::optional<NativeRegisterContextDBReg::WatchpointDetails>
NativeRegisterContextDBReg_loongarch::AdjustWatchpoint(
const WatchpointDetails &details) {
// LoongArch only needs to check the size; it does not need to check the
// address.
size_t size = details.size;
if (size != 1 && size != 2 && size != 4 && size != 8)
return std::nullopt;
return details;
}
uint32_t
NativeRegisterContextDBReg_loongarch::MakeBreakControlValue(size_t size) {
// Return encoded hardware breakpoint control value.
return m_hw_dbg_enable_bit;
}
uint32_t NativeRegisterContextDBReg_loongarch::MakeWatchControlValue(
size_t size, uint32_t watch_flags) {
// Encoding hardware watchpoint control value.
// Size encoded:
// case 1 : 0b11
// case 2 : 0b10
// case 4 : 0b01
// case 8 : 0b00
size_t encoded_size = (3 - llvm::Log2_32(size)) << 10;
return m_hw_dbg_enable_bit | encoded_size | (watch_flags << 8);
}
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