diff options
Diffstat (limited to 'src/cmd/asm/internal/arch/arm64.go')
| -rw-r--r-- | src/cmd/asm/internal/arch/arm64.go | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/src/cmd/asm/internal/arch/arm64.go b/src/cmd/asm/internal/arch/arm64.go index 3817fcd5c2..e557630ca6 100644 --- a/src/cmd/asm/internal/arch/arm64.go +++ b/src/cmd/asm/internal/arch/arm64.go @@ -75,13 +75,35 @@ func IsARM64STLXR(op obj.As) bool { arm64.ASTXP, arm64.ASTXPW, arm64.ASTLXP, arm64.ASTLXPW: return true } - // atomic instructions + // LDADDx/SWPx/CASx atomic instructions if arm64.IsAtomicInstruction(op) { return true } return false } +// IsARM64TBL reports whether the op (as defined by an arm64.A* +// constant) is one of the TBL-like instructions and one of its +// inputs does not fit into prog.Reg, so require special handling. +func IsARM64TBL(op obj.As) bool { + switch op { + case arm64.AVTBL, arm64.AVMOVQ: + return true + } + return false +} + +// IsARM64CASP reports whether the op (as defined by an arm64.A* +// constant) is one of the CASP-like instructions, and its 2nd +// destination is a register pair that require special handling. +func IsARM64CASP(op obj.As) bool { + switch op { + case arm64.ACASPD, arm64.ACASPW: + return true + } + return false +} + // ARM64Suffix handles the special suffix for the ARM64. // It returns a boolean to indicate success; failure means // cond was unrecognized. @@ -125,13 +147,6 @@ func arm64RegisterNumber(name string, n int16) (int16, bool) { return 0, false } -// IsARM64TBL reports whether the op (as defined by an arm64.A* -// constant) is one of the table lookup instructions that require special -// handling. -func IsARM64TBL(op obj.As) bool { - return op == arm64.AVTBL -} - // ARM64RegisterExtension parses an ARM64 register with extension or arrangement. func ARM64RegisterExtension(a *obj.Addr, ext string, reg, num int16, isAmount, isIndex bool) error { Rnum := (reg & 31) + int16(num<<5) |