diff options
Diffstat (limited to 'lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp')
-rw-r--r-- | lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp b/lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp index f8f8998..bda7714 100644 --- a/lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp +++ b/lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp @@ -49,7 +49,7 @@ private: SmallVectorImpl<MCFixup> &Fixups) const; // Called by the TableGen code to get the binary encoding of an address. - // The index, if any, is encoded first, followed by the base, + // The index or length, if any, is encoded first, followed by the base, // followed by the displacement. In a 20-bit displacement, // the low 12 bits are encoded before the high 8 bits. uint64_t getBDAddr12Encoding(const MCInst &MI, unsigned OpNum, @@ -60,6 +60,8 @@ private: SmallVectorImpl<MCFixup> &Fixups) const; uint64_t getBDXAddr20Encoding(const MCInst &MI, unsigned OpNum, SmallVectorImpl<MCFixup> &Fixups) const; + uint64_t getBDLAddr12Len8Encoding(const MCInst &MI, unsigned OpNum, + SmallVectorImpl<MCFixup> &Fixups) const; // Operand OpNum of MI needs a PC-relative fixup of kind Kind at // Offset bytes from the start of MI. Add the fixup to Fixups @@ -157,6 +159,16 @@ getBDXAddr20Encoding(const MCInst &MI, unsigned OpNum, | ((Disp & 0xff000) >> 12); } +uint64_t SystemZMCCodeEmitter:: +getBDLAddr12Len8Encoding(const MCInst &MI, unsigned OpNum, + SmallVectorImpl<MCFixup> &Fixups) const { + uint64_t Base = getMachineOpValue(MI, MI.getOperand(OpNum), Fixups); + uint64_t Disp = getMachineOpValue(MI, MI.getOperand(OpNum + 1), Fixups); + uint64_t Len = getMachineOpValue(MI, MI.getOperand(OpNum + 2), Fixups) - 1; + assert(isUInt<4>(Base) && isUInt<12>(Disp) && isUInt<8>(Len)); + return (Len << 16) | (Base << 12) | Disp; +} + uint64_t SystemZMCCodeEmitter::getPCRelEncoding(const MCInst &MI, unsigned OpNum, SmallVectorImpl<MCFixup> &Fixups, |