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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| package isa | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| "github.com/wader/fq/format" | ||
| "github.com/wader/fq/pkg/decode" | ||
| "github.com/wader/fq/pkg/interp" | ||
| "github.com/wader/fq/pkg/scalar" | ||
| "golang.org/x/arch/arm64/arm64asm" | ||
| ) | ||
|
|
||
| func init() { | ||
| interp.RegisterFormat( | ||
| format.Arm64, | ||
| &decode.Format{ | ||
| Description: "ARM64 instructions", | ||
| DecodeFn: decodeARM64, | ||
| RootArray: true, | ||
| RootName: "instructions", | ||
| }) | ||
| } | ||
|
|
||
| func decodeARM64(d *decode.D) any { | ||
| var symLookup func(uint64) (string, uint64) | ||
| var base int64 | ||
| var ai format.ARM64In | ||
|
|
||
| if d.ArgAs(&ai) { | ||
| symLookup = ai.SymLookup | ||
| base = ai.Base | ||
| } | ||
|
|
||
| bb := d.BytesRange(0, int(d.BitsLeft()/8)) | ||
| // TODO: uint64? | ||
| pc := base | ||
|
|
||
| for !d.End() { | ||
| d.FieldStruct("instruction", func(d *decode.D) { | ||
| i, err := arm64asm.Decode(bb) | ||
| if err != nil { | ||
| d.Fatalf("failed to decode arm64 instruction: %s", err) | ||
| } | ||
|
|
||
| // TODO: other syntax | ||
| d.FieldRawLen("opcode", int64(4)*8, scalar.BitBufSym(arm64asm.GoSyntax(i, uint64(pc), symLookup, nil)), scalar.RawHex) | ||
|
|
||
| // TODO: Enc? | ||
| d.FieldValueUint("op", uint64(i.Enc), scalar.UintSym(strings.ToLower(i.Op.String())), scalar.UintHex) | ||
|
|
||
| bb = bb[4:] | ||
| pc += int64(4) | ||
| }) | ||
|
|
||
| } | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| package isa | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| "github.com/wader/fq/format" | ||
| "github.com/wader/fq/pkg/decode" | ||
| "github.com/wader/fq/pkg/interp" | ||
| "github.com/wader/fq/pkg/scalar" | ||
| "golang.org/x/arch/x86/x86asm" | ||
| ) | ||
|
|
||
| func init() { | ||
| // amd64? | ||
| interp.RegisterFormat( | ||
| format.X86_64, | ||
| &decode.Format{ | ||
| Description: "x86-64 instructions", | ||
| DecodeFn: func(d *decode.D) any { return decodeX86(d, 64) }, | ||
| RootArray: true, | ||
| RootName: "instructions", | ||
| }) | ||
| interp.RegisterFormat( | ||
| format.X86_32, | ||
| &decode.Format{ | ||
| Description: "x86-32 instructions", | ||
| DecodeFn: func(d *decode.D) any { return decodeX86(d, 32) }, | ||
| RootArray: true, | ||
| RootName: "instructions", | ||
| }) | ||
| interp.RegisterFormat( | ||
| format.X86_16, | ||
| &decode.Format{ | ||
| Description: "x86-16 instructions", | ||
| DecodeFn: func(d *decode.D) any { return decodeX86(d, 16) }, | ||
| RootArray: true, | ||
| RootName: "instructions", | ||
| }) | ||
| } | ||
|
|
||
| func decodeX86(d *decode.D, mode int) any { | ||
| var symLookup func(uint64) (string, uint64) | ||
| var base int64 | ||
| var xi format.X86_64In | ||
|
|
||
| if d.ArgAs(&xi) { | ||
| symLookup = xi.SymLookup | ||
| base = xi.Base | ||
| } | ||
|
|
||
| bb := d.BytesRange(0, int(d.BitsLeft()/8)) | ||
| // TODO: uint64? | ||
| pc := base | ||
|
|
||
| for !d.End() { | ||
| d.FieldStruct("instruction", func(d *decode.D) { | ||
| i, err := x86asm.Decode(bb, mode) | ||
| if err != nil { | ||
| d.Fatalf("failed to decode x86 instruction: %s", err) | ||
| } | ||
|
|
||
| d.FieldRawLen("opcode", int64(i.Len)*8, scalar.BitBufSym(x86asm.IntelSyntax(i, uint64(pc), symLookup)), scalar.RawHex) | ||
|
|
||
| // log.Printf("i.Len: %#+v\n", i.Len) | ||
| // log.Printf("i.Opcode: %x\n", i.Opcode) | ||
| // log.Printf("i: %#+v\n", i) | ||
|
|
||
| // TODO: rebuild op lower? | ||
| d.FieldValueUint("op", uint64(i.Opcode), scalar.UintSym(strings.ToLower(i.Op.String())), scalar.UintHex) | ||
|
|
||
| bb = bb[i.Len:] | ||
| pc += int64(i.Len) | ||
| }) | ||
|
|
||
| } | ||
|
|
||
| return nil | ||
| } |
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