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lifting-bits-remill/lib/Arch/AArch64/Semantics/CALL_RET.cpp
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Peter Goodman 3808e9951d Refactor and add sparc (#454)
* Refactors the code to improve directory layout, use more std::string_view in place of std::string, deletes some deprecated functions, deprecates some other functions for eventual deletion, and includes semantics for sparcv8 (sparc32) and sparcv9 (sparc64)

* Update new dir layout with llvm 11 support

* Whoops missing files

* Drop llvm 800 from workflow

* Minor fix

* Move where the install directives are in CMake

* Minor fixes

* Rename tools/ to bin/.

* Minor tweaks

* Should fix issues
2020-10-28 15:11:42 -04:00

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1.2 KiB
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/*
* Copyright (c) 2017 Trail of Bits, Inc.
*
* 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
*
* http://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.
*/
namespace {
template <typename S>
DEF_SEM(CALL, S target_addr, PC ret_addr, R64W dst_pc, R64W return_pc_dst) {
const auto return_pc = Read(ret_addr);
const auto new_pc = Read(target_addr);
Write(REG_LP, return_pc);
Write(REG_PC, new_pc);
Write(dst_pc, new_pc);
Write(return_pc_dst, return_pc);
return memory;
}
DEF_SEM(RET, R64 target_pc, R64W dst_pc) {
const auto new_pc = Read(target_pc);
Write(REG_PC, new_pc);
Write(dst_pc, new_pc);
return memory;
}
} // namespace
DEF_ISEL(RET_64R_BRANCH_REG) = RET;
DEF_ISEL(BLR_64_BRANCH_REG) = CALL<R64>;
DEF_ISEL(BL_ONLY_BRANCH_IMM) = CALL<PC>;