6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-06 17:24:34 +00:00
Code Issues Projects Releases Wiki Activity

Pass an ArrayRef to MCDisassembler::getInstruction.

Browse Source 
With this patch MCDisassembler::getInstruction takes an ArrayRef<uint8_t>
instead of a MemoryObject.

Even on X86 there is a maximum size an instruction can have. Given
that, it seems way simpler and more efficient to just pass an ArrayRef
to the disassembler instead of a MemoryObject and have it do a virtual
call every time it wants some extra bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221751 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-11-12 02:04:27 +00:00
parent 9abbcb7453
commit 6a222ec893
17 changed files with 95 additions and 113 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
View File

@ -12,7 +12,6 @@
#include "llvm/MC/MCFixedLenDisassembler.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/MemoryObject.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
@ -29,7 +28,7 @@ public:
virtual ~PPCDisassembler() {}
DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size,
const MemoryObject &Region, uint64_t Address,
ArrayRef<uint8_t> Bytes, uint64_t Address,
raw_ostream &VStream,
raw_ostream &CStream) const override;
};
@ -322,13 +321,12 @@ static DecodeStatus decodeCRBitMOperand(MCInst &Inst, uint64_t Imm,
#include "PPCGenDisassemblerTables.inc"
DecodeStatus PPCDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
const MemoryObject &Region,
ArrayRef<uint8_t> Bytes,
uint64_t Address, raw_ostream &OS,
raw_ostream &CS) const {
// Get the four bytes of the instruction.
uint8_t Bytes[4];
Size = 4;
if (Region.readBytes(Address, Size, Bytes) == -1) {
if (Bytes.size() < 4) {
Size = 0;
return MCDisassembler::Fail;
}