llvm-project/llvm/lib/Support/RISCVAttributeParser.cpp
Alex Bradbury 431be86266 Revert "[RISCV] Support RISCV Atomics ABI attributes (#84597)"
This reverts commit 9221f3af8f832d990be986c05d964ad37e5a2356.

As reported
<https://github.com/llvm/llvm-project/pull/84597#issuecomment-2079128332>
and confirmed by me locally, adding these attributes causes current GNU
ld to segfault when processing the input. Reverted so we can discuss
the best next step.
2024-04-26 12:16:53 +01:00

67 lines
2.0 KiB
C++

//===-- RISCVAttributeParser.cpp - RISCV Attribute Parser -----------------===//
//
// 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 "llvm/Support/RISCVAttributeParser.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
const RISCVAttributeParser::DisplayHandler
RISCVAttributeParser::displayRoutines[] = {
{
RISCVAttrs::ARCH,
&ELFAttributeParser::stringAttribute,
},
{
RISCVAttrs::PRIV_SPEC,
&ELFAttributeParser::integerAttribute,
},
{
RISCVAttrs::PRIV_SPEC_MINOR,
&ELFAttributeParser::integerAttribute,
},
{
RISCVAttrs::PRIV_SPEC_REVISION,
&ELFAttributeParser::integerAttribute,
},
{
RISCVAttrs::STACK_ALIGN,
&RISCVAttributeParser::stackAlign,
},
{
RISCVAttrs::UNALIGNED_ACCESS,
&RISCVAttributeParser::unalignedAccess,
}};
Error RISCVAttributeParser::unalignedAccess(unsigned tag) {
static const char *strings[] = {"No unaligned access", "Unaligned access"};
return parseStringAttribute("Unaligned_access", tag, ArrayRef(strings));
}
Error RISCVAttributeParser::stackAlign(unsigned tag) {
uint64_t value = de.getULEB128(cursor);
std::string description =
"Stack alignment is " + utostr(value) + std::string("-bytes");
printAttribute(tag, value, description);
return Error::success();
}
Error RISCVAttributeParser::handler(uint64_t tag, bool &handled) {
handled = false;
for (const auto &AH : displayRoutines) {
if (uint64_t(AH.attribute) == tag) {
if (Error e = (this->*AH.routine)(tag))
return e;
handled = true;
break;
}
}
return Error::success();
}