- getCalleeSavedSpillSlots(unsigned &NumEntries) const {
- if (Subtarget.isDarwinABI()) {
- NumEntries = 1;
- if (Subtarget.isPPC64()) {
- static const SpillSlot darwin64Offsets = {PPC::X31, -8};
- return &darwin64Offsets;
- } else {
- static const SpillSlot darwinOffsets = {PPC::R31, -4};
- return &darwinOffsets;
- }
- }
-
- // Early exit if not using the SVR4 ABI.
- if (!Subtarget.isSVR4ABI()) {
- NumEntries = 0;
- return 0;
- }
-
- // Note that the offsets here overlap, but this is fixed up in
- // processFunctionBeforeFrameFinalized.
-
- static const SpillSlot Offsets[] = {
- // Floating-point register save area offsets.
- {PPC::F31, -8},
- {PPC::F30, -16},
- {PPC::F29, -24},
- {PPC::F28, -32},
- {PPC::F27, -40},
- {PPC::F26, -48},
- {PPC::F25, -56},
- {PPC::F24, -64},
- {PPC::F23, -72},
- {PPC::F22, -80},
- {PPC::F21, -88},
- {PPC::F20, -96},
- {PPC::F19, -104},
- {PPC::F18, -112},
- {PPC::F17, -120},
- {PPC::F16, -128},
- {PPC::F15, -136},
- {PPC::F14, -144},
-
- // General register save area offsets.
- {PPC::R31, -4},
- {PPC::R30, -8},
- {PPC::R29, -12},
- {PPC::R28, -16},
- {PPC::R27, -20},
- {PPC::R26, -24},
- {PPC::R25, -28},
- {PPC::R24, -32},
- {PPC::R23, -36},
- {PPC::R22, -40},
- {PPC::R21, -44},
- {PPC::R20, -48},
- {PPC::R19, -52},
- {PPC::R18, -56},
- {PPC::R17, -60},
- {PPC::R16, -64},
- {PPC::R15, -68},
- {PPC::R14, -72},
-
- // CR save area offset. We map each of the nonvolatile CR fields
- // to the slot for CR2, which is the first of the nonvolatile CR
- // fields to be assigned, so that we only allocate one save slot.
- // See PPCRegisterInfo::hasReservedSpillSlot() for more information.
- {PPC::CR2, -4},
-
- // VRSAVE save area offset.
- {PPC::VRSAVE, -4},
-
- // Vector register save area
- {PPC::V31, -16},
- {PPC::V30, -32},
- {PPC::V29, -48},
- {PPC::V28, -64},
- {PPC::V27, -80},
- {PPC::V26, -96},
- {PPC::V25, -112},
- {PPC::V24, -128},
- {PPC::V23, -144},
- {PPC::V22, -160},
- {PPC::V21, -176},
- {PPC::V20, -192}
- };
-
- static const SpillSlot Offsets64[] = {
- // Floating-point register save area offsets.
- {PPC::F31, -8},
- {PPC::F30, -16},
- {PPC::F29, -24},
- {PPC::F28, -32},
- {PPC::F27, -40},
- {PPC::F26, -48},
- {PPC::F25, -56},
- {PPC::F24, -64},
- {PPC::F23, -72},
- {PPC::F22, -80},
- {PPC::F21, -88},
- {PPC::F20, -96},
- {PPC::F19, -104},
- {PPC::F18, -112},
- {PPC::F17, -120},
- {PPC::F16, -128},
- {PPC::F15, -136},
- {PPC::F14, -144},
-
- // General register save area offsets.
- {PPC::X31, -8},
- {PPC::X30, -16},
- {PPC::X29, -24},
- {PPC::X28, -32},
- {PPC::X27, -40},
- {PPC::X26, -48},
- {PPC::X25, -56},
- {PPC::X24, -64},
- {PPC::X23, -72},
- {PPC::X22, -80},
- {PPC::X21, -88},
- {PPC::X20, -96},
- {PPC::X19, -104},
- {PPC::X18, -112},
- {PPC::X17, -120},
- {PPC::X16, -128},
- {PPC::X15, -136},
- {PPC::X14, -144},
-
- // VRSAVE save area offset.
- {PPC::VRSAVE, -4},
-
- // Vector register save area
- {PPC::V31, -16},
- {PPC::V30, -32},
- {PPC::V29, -48},
- {PPC::V28, -64},
- {PPC::V27, -80},
- {PPC::V26, -96},
- {PPC::V25, -112},
- {PPC::V24, -128},
- {PPC::V23, -144},
- {PPC::V22, -160},
- {PPC::V21, -176},
- {PPC::V20, -192}
- };
-
- if (Subtarget.isPPC64()) {
- NumEntries = array_lengthof(Offsets64);
-
- return Offsets64;
- } else {
- NumEntries = array_lengthof(Offsets);
-
- return Offsets;
- }
- }