86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
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package gen
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import (
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"github.com/mmcloughlin/avo/internal/api"
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"github.com/mmcloughlin/avo/internal/inst"
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"github.com/mmcloughlin/avo/internal/prnt"
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)
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// DeclareTestArguments prints a block of variables declaring a valid operand of
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// each operand type.
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func DeclareTestArguments(g *prnt.Generator) {
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g.Printf("var (\n")
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for _, arg := range validArgs {
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g.Printf("\t%s operand.Op = %s\n", TestArgumentName(arg.Type), arg.Code)
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}
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g.Printf(")\n")
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}
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// TestSignature returns a function signature with arguments matching the given
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// instruction form. Requires variables declared by DeclareTestArguments().
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func TestSignature(f inst.Form) api.Signature {
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var names []string
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for _, op := range f.Operands {
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names = append(names, TestArgumentName(op.Type))
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}
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return api.ArgsList(names)
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}
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// TestArgumentName returns the name of the variable of operand type t declared
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// by DeclareTestArguments().
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func TestArgumentName(t string) string {
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return "op" + t
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}
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var validArgs = []struct {
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Type string
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Code string
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}{
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// Immediates
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{"1", "operand.Imm(1)"},
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{"3", "operand.Imm(3)"},
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{"imm2u", "operand.Imm(3)"},
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{"imm8", "operand.Imm(math.MaxInt8)"},
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{"imm16", "operand.Imm(math.MaxInt16)"},
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{"imm32", "operand.Imm(math.MaxInt32)"},
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{"imm64", "operand.Imm(math.MaxInt64)"},
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// Registers
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{"al", "reg.AL"},
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{"cl", "reg.CL"},
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{"ax", "reg.AX"},
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{"eax", "reg.EAX"},
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{"rax", "reg.RAX"},
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{"r8", "reg.CH"},
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{"r16", "reg.R9W"},
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{"r32", "reg.R10L"},
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{"r64", "reg.R11"},
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{"xmm0", "reg.X0"},
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{"xmm", "reg.X7"},
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{"ymm", "reg.Y15"},
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{"zmm", "reg.Z31"},
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{"k", "reg.K7"},
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// Memory
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{"m", "operand.Mem{Base: reg.BX, Index: reg.CX, Scale: 2}"},
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{"m8", "operand.Mem{Base: reg.BL, Index: reg.CH, Scale: 1}"},
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{"m16", "operand.Mem{Base: reg.BX, Index: reg.CX, Scale: 2}"},
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{"m32", "operand.Mem{Base: reg.EBX, Index: reg.ECX, Scale: 4}"},
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{"m64", "operand.Mem{Base: reg.RBX, Index: reg.RCX, Scale: 8}"},
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{"m128", "operand.Mem{Base: reg.RBX, Index: reg.RCX, Scale: 8}"},
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{"m256", "operand.Mem{Base: reg.RBX, Index: reg.RCX, Scale: 8}"},
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{"m512", "operand.Mem{Base: reg.RBX, Index: reg.RCX, Scale: 8}"},
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// Vector memory
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{"vm32x", "operand.Mem{Base: reg.R13, Index: reg.X4, Scale: 1}"},
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{"vm64x", "operand.Mem{Base: reg.R13, Index: reg.X8, Scale: 1}"},
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{"vm32y", "operand.Mem{Base: reg.R13, Index: reg.Y4, Scale: 1}"},
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{"vm64y", "operand.Mem{Base: reg.R13, Index: reg.Y8, Scale: 1}"},
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{"vm32z", "operand.Mem{Base: reg.R13, Index: reg.Z4, Scale: 1}"},
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{"vm64z", "operand.Mem{Base: reg.R13, Index: reg.Z8, Scale: 1}"},
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// Relative
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{"rel8", "operand.Rel(math.MaxInt8)"},
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{"rel32", "operand.LabelRef(\"lbl\")"},
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}
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