79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/*
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Copyright 2023 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "oslib/oslib.h"
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#include <aarch32/macro-assembler-aarch32.h>
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using namespace vixl::aarch32;
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#include <map>
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class ArmUnwindInfo : public UnwindInfo
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{
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public:
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void saveReg(u32 offset, const Register& reg, int stackOffset) {
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UnwindInfo::saveReg(offset, dwarfRegisterId(reg), stackOffset);
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}
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void saveReg(u32 offset, const SRegister& reg, int stackOffset) {
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UnwindInfo::saveExtReg(offset, dwarfRegisterId(reg), stackOffset);
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}
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static bool findFDE(uintptr_t targetAddr, uintptr_t &fde)
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{
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DEBUG_LOG(DYNAREC, "findFDE: addr %x entries %d", targetAddr, (int)fdes.size());
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if (fdes.empty())
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return false;
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auto it = fdes.upper_bound(targetAddr);
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if (it == fdes.begin())
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return false;
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--it;
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u32 start = it->second[2];
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u32 size = it->second[3];
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if (targetAddr >= start && targetAddr < start + size) {
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fde = (uintptr_t)it->second;
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return true;
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}
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return false;
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}
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protected:
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void registerFrame(void *frame) override
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{
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u32 *fde = (u32 *)frame;
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u32 start = fde[2];
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fdes[start] = fde;
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}
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void deregisterFrame(void *frame) override
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{
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u32 *fde = (u32 *)frame;
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u32 start = fde[2];
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fdes.erase(start);
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}
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private:
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int dwarfRegisterId(const CPURegister& reg)
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{
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if (reg.IsFPRegister())
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return reg.GetCode() + 64;
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else
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return reg.GetCode();
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}
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static std::map<u32, u32 *> fdes;
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};
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