6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-02 02:55:35 +00:00
Code Issues Projects Releases Wiki Activity

The "addRegListOperands()" function returns the start register and the total

Browse Source 
number of registers in the list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118456 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-11-08 23:49:57 +00:00
parent 902da265f6
commit 87f4f9a946
1 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
View File

@ -221,6 +221,20 @@ public:
bool isRegList() const { return Kind == RegisterList; }
bool isToken() const { return Kind == Token; }
bool isMemory() const { return Kind == Memory; }
bool isMemMode5() const {
if (!isMemory() || Mem.OffsetIsReg || Mem.OffsetRegShifted ||
Mem.Writeback || Mem.Negative)
return false;
// If there is an offset expression, make sure it's valid.
if (!Mem.Offset)
return true;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Mem.Offset);
if (!CE)
return false;
// The offset must be a multiple of 4 in the range 0-1020.
int64_t Value = CE->getValue();
return ((Value & 0x3) == 0 && Value <= 1020 && Value >= -1020);
}
void addExpr(MCInst &Inst, const MCExpr *Expr) const {
// Add as immediates when possible. Null MCExpr = 0.
@ -244,26 +258,18 @@ public:
Inst.addOperand(MCOperand::CreateReg(getReg()));
}
void addRegListOperands(MCInst &Inst, unsigned N) const {
assert(N == 2 && "Invalid number of operands!");
std::pair<unsigned, unsigned> RegList = getRegList();
Inst.addOperand(MCOperand::CreateReg(RegList.first));
Inst.addOperand(MCOperand::CreateImm(RegList.second));
}
void addImmOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
addExpr(Inst, getImm());
}
bool isMemMode5() const {
if (!isMemory() || Mem.OffsetIsReg || Mem.OffsetRegShifted ||
Mem.Writeback || Mem.Negative)
return false;
// If there is an offset expression, make sure it's valid.
if (!Mem.Offset)
return true;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Mem.Offset);
if (!CE)
return false;
// The offset must be a multiple of 4 in the range 0-1020.
int64_t Value = CE->getValue();
return ((Value & 0x3) == 0 && Value <= 1020 && Value >= -1020);
}
void addMemMode5Operands(MCInst &Inst, unsigned N) const {
assert(N == 2 && isMemMode5() && "Invalid number of operands!");