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reg: support for register casting

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Adds methods for referencing sub- or super-registers. For example, for
general purpose registers you can now reference As8(), As16(), ... and
for vector AsX(), AsY(), AsZ().

Closes #1
This commit is contained in:
Michael McLoughlin
2018-12-30 18:40:45 -08:00
parent 4644d996ee
commit 18cdf50d7c
16 changed files with 558 additions and 244 deletions
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10
operand/checks.go
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@@ -106,12 +106,12 @@ func IsR64(op Op) bool {
// IsPseudo returns true if op is a pseudo register.
func IsPseudo(op Op) bool {
return IsRegisterKind(op, reg.Internal)
return IsRegisterKind(op, reg.KindPseudo)
}
// IsGP returns true if op is a general-purpose register of size n bytes.
func IsGP(op Op, n uint) bool {
return IsRegisterKindSize(op, reg.GP, n)
return IsRegisterKindSize(op, reg.KindGP, n)
}
// IsXmm0 returns true if op is the X0 register.
@@ -121,12 +121,12 @@ func IsXmm0(op Op) bool {
// IsXmm returns true if op is a 128-bit XMM register.
func IsXmm(op Op) bool {
return IsRegisterKindSize(op, reg.SSEAVX, 16)
return IsRegisterKindSize(op, reg.KindVector, 16)
}
// IsYmm returns true if op is a 256-bit YMM register.
func IsYmm(op Op) bool {
return IsRegisterKindSize(op, reg.SSEAVX, 32)
return IsRegisterKindSize(op, reg.KindVector, 32)
}
// IsRegisterKindSize returns true if op is a register of the given kind and size in bytes.
@@ -183,7 +183,7 @@ func IsMSize(op Op, n uint) bool {
// IsMReg returns true if op is a register that can be used in a memory operand.
func IsMReg(op Op) bool {
return IsPseudo(op) || IsRegisterKind(op, reg.GP)
return IsPseudo(op) || IsRegisterKind(op, reg.KindGP)
}
// IsM128 returns true if op is a 128-bit memory operand.