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cmd/asm: add comments back for aliases on jumps for x86

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These were lost in the transition from 8a/6a to asm.
Also, in the process, discover more aliases. I'm betting the missing
ones were a casualty of the recent merge of 386 and amd64.

Update #10385.

Change-Id: I1681034b25af3ffc103f75e5fc57baca5feb3fcd
Reviewed-on: https://go-review.googlesource.com/9431
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Rob Pike 2015-04-28 12:35:06 -07:00
parent d2d840aae6
commit a88994c137
1 changed files with 45 additions and 29 deletions
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74
src/cmd/asm/internal/arch/arch.go
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@ -103,35 +103,51 @@ func archX86(linkArch *obj.LinkArch) *Arch {
}
}
// Annoying aliases.
instructions["JA"] = x86.AJHI
instructions["JAE"] = x86.AJCC
instructions["JB"] = x86.AJCS
instructions["JBE"] = x86.AJLS
instructions["JC"] = x86.AJCS
instructions["JE"] = x86.AJEQ
instructions["JG"] = x86.AJGT
instructions["JHS"] = x86.AJCC
instructions["JL"] = x86.AJLT
instructions["JLO"] = x86.AJCS
instructions["JNA"] = x86.AJLS
instructions["JNAE"] = x86.AJCS
instructions["JNB"] = x86.AJCC
instructions["JNBE"] = x86.AJHI
instructions["JNC"] = x86.AJCC
instructions["JNG"] = x86.AJLE
instructions["JNGE"] = x86.AJLT
instructions["JNL"] = x86.AJGE
instructions["JNLE"] = x86.AJGT
instructions["JNO"] = x86.AJOC
instructions["JNP"] = x86.AJPC
instructions["JNS"] = x86.AJPL
instructions["JNZ"] = x86.AJNE
instructions["JO"] = x86.AJOS
instructions["JP"] = x86.AJPS
instructions["JPE"] = x86.AJPS
instructions["JPO"] = x86.AJPC
instructions["JS"] = x86.AJMI
instructions["JZ"] = x86.AJEQ
instructions["JA"] = x86.AJHI /* alternate */
instructions["JAE"] = x86.AJCC /* alternate */
instructions["JB"] = x86.AJCS /* alternate */
instructions["JBE"] = x86.AJLS /* alternate */
instructions["JC"] = x86.AJCS /* alternate */
instructions["JCC"] = x86.AJCC /* carry clear (CF = 0) */
instructions["JCS"] = x86.AJCS /* carry set (CF = 1) */
instructions["JE"] = x86.AJEQ /* alternate */
instructions["JEQ"] = x86.AJEQ /* equal (ZF = 1) */
instructions["JG"] = x86.AJGT /* alternate */
instructions["JGE"] = x86.AJGE /* greater than or equal (signed) (SF = OF) */
instructions["JGT"] = x86.AJGT /* greater than (signed) (ZF = 0 && SF = OF) */
instructions["JHI"] = x86.AJHI /* higher (unsigned) (CF = 0 && ZF = 0) */
instructions["JHS"] = x86.AJCC /* alternate */
instructions["JL"] = x86.AJLT /* alternate */
instructions["JLE"] = x86.AJLE /* less than or equal (signed) (ZF = 1 || SF != OF) */
instructions["JLO"] = x86.AJCS /* alternate */
instructions["JLS"] = x86.AJLS /* lower or same (unsigned) (CF = 1 || ZF = 1) */
instructions["JLT"] = x86.AJLT /* less than (signed) (SF != OF) */
instructions["JMI"] = x86.AJMI /* negative (minus) (SF = 1) */
instructions["JNA"] = x86.AJLS /* alternate */
instructions["JNAE"] = x86.AJCS /* alternate */
instructions["JNB"] = x86.AJCC /* alternate */
instructions["JNBE"] = x86.AJHI /* alternate */
instructions["JNC"] = x86.AJCC /* alternate */
instructions["JNE"] = x86.AJNE /* not equal (ZF = 0) */
instructions["JNG"] = x86.AJLE /* alternate */
instructions["JNGE"] = x86.AJLT /* alternate */
instructions["JNL"] = x86.AJGE /* alternate */
instructions["JNLE"] = x86.AJGT /* alternate */
instructions["JNO"] = x86.AJOC /* alternate */
instructions["JNP"] = x86.AJPC /* alternate */
instructions["JNS"] = x86.AJPL /* alternate */
instructions["JNZ"] = x86.AJNE /* alternate */
instructions["JO"] = x86.AJOS /* alternate */
instructions["JOC"] = x86.AJOC /* overflow clear (OF = 0) */
instructions["JOS"] = x86.AJOS /* overflow set (OF = 1) */
instructions["JP"] = x86.AJPS /* alternate */
instructions["JPC"] = x86.AJPC /* parity clear (PF = 0) */
instructions["JPE"] = x86.AJPS /* alternate */
instructions["JPL"] = x86.AJPL /* non-negative (plus) (SF = 0) */
instructions["JPO"] = x86.AJPC /* alternate */
instructions["JPS"] = x86.AJPS /* parity set (PF = 1) */
instructions["JS"] = x86.AJMI /* alternate */
instructions["JZ"] = x86.AJEQ /* alternate */
instructions["MASKMOVDQU"] = x86.AMASKMOVOU
instructions["MOVD"] = x86.AMOVQ
instructions["MOVDQ2Q"] = x86.AMOVQ