mirror of
https://github.com/RGBCube/serenity
synced 2025-10-26 09:22:34 +00:00
6d64b13a1b
And limit the `void*` to the functions that interface the system (i.e. ptrace wrappers). This generally makes the code less riddled with casts.
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/*
|
|
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "Expression.h"
|
|
|
|
#include <AK/Format.h>
|
|
#include <AK/MemoryStream.h>
|
|
#include <sys/arch/i386/regs.h>
|
|
|
|
namespace Debug::Dwarf::Expression {
|
|
|
|
Value evaluate(ReadonlyBytes bytes, [[maybe_unused]] PtraceRegisters const& regs)
|
|
{
|
|
InputMemoryStream stream(bytes);
|
|
|
|
while (!stream.eof()) {
|
|
u8 opcode = 0;
|
|
stream >> opcode;
|
|
|
|
switch (static_cast<Operations>(opcode)) {
|
|
#if ARCH(I386)
|
|
case Operations::RegEbp: {
|
|
ssize_t offset = 0;
|
|
stream.read_LEB128_signed(offset);
|
|
return Value { Type::UnsignedInteger, { regs.ebp + offset } };
|
|
}
|
|
|
|
case Operations::FbReg: {
|
|
ssize_t offset = 0;
|
|
stream.read_LEB128_signed(offset);
|
|
return Value { Type::UnsignedInteger, { regs.ebp + 2 * sizeof(size_t) + offset } };
|
|
}
|
|
#endif
|
|
|
|
default:
|
|
dbgln("DWARF expr addr: {:p}", bytes.data());
|
|
dbgln("unsupported opcode: {}", opcode);
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
}
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
}
|