129 lines
5.2 KiB
Go
129 lines
5.2 KiB
Go
package load
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import (
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"github.com/mmcloughlin/avo/internal/inst"
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)
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// aliases defines a list of opcode aliases. Where possible these are extracted
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// from the code (see note below).
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var aliases = map[string]string{
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// The PSHUFD/PSHUFL alias is not recorded in the list of "Annoying aliases" below. However the instructions are identical.
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//
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// Reference: https://github.com/golang/go/blob/048c9164a0c5572df18325e377473e7893dbfb07/src/cmd/internal/obj/x86/asm6.go#L1365
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//
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// {APSHUFL, yxshuf, Pq, opBytes{0x70, 00}},
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//
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// Reference: https://github.com/golang/go/blob/048c9164a0c5572df18325e377473e7893dbfb07/src/cmd/internal/obj/x86/asm6.go#L1688
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//
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// {APSHUFD, yxshuf, Pq, opBytes{0x70, 0}},
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//
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"PSHUFD": "PSHUFL",
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}
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// Go contains a list of self-proclaimed "Annoying aliases", as follows. We use
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// a script to automatically extract this list from the source code (see the
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// following go:generate line). Then we merge this with the manual list above.
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//
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// Reference: https://github.com/golang/go/blob/048c9164a0c5572df18325e377473e7893dbfb07/src/cmd/asm/internal/arch/arch.go#L126-L182
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//
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// }
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// // Annoying aliases.
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// instructions["JA"] = x86.AJHI /* alternate */
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// instructions["JAE"] = x86.AJCC /* alternate */
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// instructions["JB"] = x86.AJCS /* alternate */
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// instructions["JBE"] = x86.AJLS /* alternate */
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// instructions["JC"] = x86.AJCS /* alternate */
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// instructions["JCC"] = x86.AJCC /* carry clear (CF = 0) */
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// instructions["JCS"] = x86.AJCS /* carry set (CF = 1) */
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// instructions["JE"] = x86.AJEQ /* alternate */
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// instructions["JEQ"] = x86.AJEQ /* equal (ZF = 1) */
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// instructions["JG"] = x86.AJGT /* alternate */
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// instructions["JGE"] = x86.AJGE /* greater than or equal (signed) (SF = OF) */
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// instructions["JGT"] = x86.AJGT /* greater than (signed) (ZF = 0 && SF = OF) */
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// instructions["JHI"] = x86.AJHI /* higher (unsigned) (CF = 0 && ZF = 0) */
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// instructions["JHS"] = x86.AJCC /* alternate */
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// instructions["JL"] = x86.AJLT /* alternate */
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// instructions["JLE"] = x86.AJLE /* less than or equal (signed) (ZF = 1 || SF != OF) */
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// instructions["JLO"] = x86.AJCS /* alternate */
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// instructions["JLS"] = x86.AJLS /* lower or same (unsigned) (CF = 1 || ZF = 1) */
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// instructions["JLT"] = x86.AJLT /* less than (signed) (SF != OF) */
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// instructions["JMI"] = x86.AJMI /* negative (minus) (SF = 1) */
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// instructions["JNA"] = x86.AJLS /* alternate */
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// instructions["JNAE"] = x86.AJCS /* alternate */
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// instructions["JNB"] = x86.AJCC /* alternate */
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// instructions["JNBE"] = x86.AJHI /* alternate */
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// instructions["JNC"] = x86.AJCC /* alternate */
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// instructions["JNE"] = x86.AJNE /* not equal (ZF = 0) */
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// instructions["JNG"] = x86.AJLE /* alternate */
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// instructions["JNGE"] = x86.AJLT /* alternate */
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// instructions["JNL"] = x86.AJGE /* alternate */
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// instructions["JNLE"] = x86.AJGT /* alternate */
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// instructions["JNO"] = x86.AJOC /* alternate */
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// instructions["JNP"] = x86.AJPC /* alternate */
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// instructions["JNS"] = x86.AJPL /* alternate */
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// instructions["JNZ"] = x86.AJNE /* alternate */
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// instructions["JO"] = x86.AJOS /* alternate */
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// instructions["JOC"] = x86.AJOC /* overflow clear (OF = 0) */
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// instructions["JOS"] = x86.AJOS /* overflow set (OF = 1) */
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// instructions["JP"] = x86.AJPS /* alternate */
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// instructions["JPC"] = x86.AJPC /* parity clear (PF = 0) */
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// instructions["JPE"] = x86.AJPS /* alternate */
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// instructions["JPL"] = x86.AJPL /* non-negative (plus) (SF = 0) */
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// instructions["JPO"] = x86.AJPC /* alternate */
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// instructions["JPS"] = x86.AJPS /* parity set (PF = 1) */
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// instructions["JS"] = x86.AJMI /* alternate */
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// instructions["JZ"] = x86.AJEQ /* alternate */
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// instructions["MASKMOVDQU"] = x86.AMASKMOVOU
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// instructions["MOVD"] = x86.AMOVQ
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// instructions["MOVDQ2Q"] = x86.AMOVQ
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// instructions["MOVNTDQ"] = x86.AMOVNTO
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// instructions["MOVOA"] = x86.AMOVO
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// instructions["PSLLDQ"] = x86.APSLLO
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// instructions["PSRLDQ"] = x86.APSRLO
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// instructions["PADDD"] = x86.APADDL
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//
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// return &Arch{
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//
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//go:generate ./annoyingaliases.sh zannoyingaliases.go
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func init() {
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for from, to := range annoyingaliases {
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aliases[from] = to
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}
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}
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// extras is simply a list of extra instructions to add to the database.
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var extras = []*inst.Instruction{
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// MOVLQZX does not appear in either x86 CSV or Opcodes, but does appear in stdlib assembly.
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//
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// Reference: https://github.com/golang/go/blob/048c9164a0c5572df18325e377473e7893dbfb07/src/runtime/asm_amd64.s#L451-L453
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//
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// TEXT ·reflectcall(SB), NOSPLIT, $0-32
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// MOVLQZX argsize+24(FP), CX
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// DISPATCH(runtime·call32, 32)
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//
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// Reference: https://github.com/golang/go/blob/048c9164a0c5572df18325e377473e7893dbfb07/src/cmd/internal/obj/x86/asm6.go#L1217
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//
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// {AMOVLQZX, yml_rl, Px, opBytes{0x8b}},
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//
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// Reference: https://github.com/golang/go/blob/048c9164a0c5572df18325e377473e7893dbfb07/src/cmd/internal/obj/x86/asm6.go#L515-L517
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//
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// var yml_rl = []ytab{
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// {Zm_r, 1, argList{Yml, Yrl}},
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// }
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//
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{
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Opcode: "MOVLQZX",
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Summary: "Move with Zero-Extend",
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Forms: []inst.Form{
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{
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Operands: []inst.Operand{
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{Type: "m32", Action: inst.R},
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{Type: "r64", Action: inst.W},
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},
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},
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},
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},
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}
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