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cmd/asm, cmd/internal/obj/mips: add an alias of RSB on mips64x
Change-Id: I724ce0a48c1aeed14267c049fa415a6fa2fffbcf Reviewed-on: https://go-review.googlesource.com/19864 Reviewed-by: Minux Ma <minux@golang.org>
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@ -393,6 +393,9 @@ func archMips64() *Arch {
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// Avoid unintentionally clobbering g using R30.
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delete(register, "R30")
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register["g"] = mips.REG_R30
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// Avoid unintentionally clobbering RSB using R28.
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delete(register, "R28")
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register["RSB"] = mips.REG_R28
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registerPrefix := map[string]bool{
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"F": true,
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"FCR": true,
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@ -512,7 +512,6 @@ var mips64OperandTests = []operandTest{
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{"R25", "R25"},
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{"R26", "R26"},
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{"R27", "R27"},
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{"R28", "R28"},
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{"R29", "R29"},
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{"R3", "R3"},
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{"R31", "R31"},
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@ -525,6 +524,7 @@ var mips64OperandTests = []operandTest{
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{"LO", "LO"},
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{"a(FP)", "a(FP)"},
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{"g", "g"},
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{"RSB", "RSB"},
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{"ret+8(FP)", "ret+8(FP)"},
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{"runtime·abort(SB)", "runtime.abort(SB)"},
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{"·AddUint32(SB)", "\"\".AddUint32(SB)"},
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@ -187,7 +187,7 @@ const (
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REGZERO = REG_R0 /* set to zero */
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REGSP = REG_R29
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REGSB = REG_R30
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REGSB = REG_R28
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REGLINK = REG_R31
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REGRET = REG_R1
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REGARG = -1 /* -1 disables passing the first argument in register */
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@ -47,6 +47,10 @@ func Rconv(r int) string {
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// Special case.
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return "g"
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}
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if r == REGSB {
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// Special case.
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return "RSB"
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}
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if REG_R0 <= r && r <= REG_R31 {
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return fmt.Sprintf("R%d", r-REG_R0)
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}
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