diff options
Diffstat (limited to 'src/reflect/abi.go')
-rw-r--r-- | src/reflect/abi.go | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/reflect/abi.go b/src/reflect/abi.go index 9ddde3ae57..2ce7ca2615 100644 --- a/src/reflect/abi.go +++ b/src/reflect/abi.go @@ -467,3 +467,45 @@ func newAbiDesc(t *funcType, rcvr *rtype) abiDesc { out.stackBytes -= retOffset return abiDesc{in, out, stackCallArgsSize, retOffset, spill, stackPtrs, inRegPtrs, outRegPtrs} } + +// intFromReg loads an argSize sized integer from reg and places it at to. +// +// argSize must be non-zero, fit in a register, and a power-of-two. +func intFromReg(r *abi.RegArgs, reg int, argSize uintptr, to unsafe.Pointer) { + memmove(to, r.IntRegArgAddr(reg, argSize), argSize) +} + +// intToReg loads an argSize sized integer and stores it into reg. +// +// argSize must be non-zero, fit in a register, and a power-of-two. +func intToReg(r *abi.RegArgs, reg int, argSize uintptr, from unsafe.Pointer) { + memmove(r.IntRegArgAddr(reg, argSize), from, argSize) +} + +// floatFromReg loads a float value from its register representation in r. +// +// argSize must be 4 or 8. +func floatFromReg(r *abi.RegArgs, reg int, argSize uintptr, to unsafe.Pointer) { + switch argSize { + case 4: + *(*float32)(to) = archFloat32FromReg(r.Floats[reg]) + case 8: + *(*float64)(to) = *(*float64)(unsafe.Pointer(&r.Floats[reg])) + default: + panic("bad argSize") + } +} + +// floatToReg stores a float value in its register representation in r. +// +// argSize must be either 4 or 8. +func floatToReg(r *abi.RegArgs, reg int, argSize uintptr, from unsafe.Pointer) { + switch argSize { + case 4: + r.Floats[reg] = archFloat32ToReg(*(*float32)(from)) + case 8: + r.Floats[reg] = *(*uint64)(from) + default: + panic("bad argSize") + } +} |