48 lines
1.7 KiB
Groff
48 lines
1.7 KiB
Groff
.TH GASM-AUDIT-INSTRUCTIONS 1 "2026-09-19" "gasm 0.33.0" "User Commands"
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.SH NAME
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gasm-audit-instructions \- diff the encoder against the Go toolchain, or measure a corpus
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.SH SYNOPSIS
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.B gasm audit\-instructions [\-\-corpus [\fIdir\fR]] [amd64|arm64|riscv64|loong64]
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.SH DESCRIPTION
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Compare the gasm encoder for the given architecture (default amd64)
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against
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.B go tool asm
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and print the diff: superset encodings (gasm-only, shippable via
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.BR "gasm asm \-\-format goobj" ),
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known-but-unencodable names (the backlog) and go-only names (feature
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gaps). The Go side is probed black-box with a battery of bare
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mnemonics, so the audit tracks whatever toolchain
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.B go env GOROOT
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provides.
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.PP
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With
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.BR \-\-corpus ,
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the audit changes shape: it assembles every
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.I .s
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file under the given directory (default GOROOT/src) with the gasm
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encoder only, no toolchain probing. A file whose name carries a
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recognisable _arch suffix is attempted for that architecture; a file
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without one is attempted for all four, exactly as a GOARCH build would
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compile it. The report gives the headline number (files that assemble
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for every target architecture), the per-architecture pass rates and the
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most common failure reasons, which drive the encodability backlog by
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frequency rather than by table order. A run over GOROOT takes under a
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second.
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.SH OPTIONS
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.TP
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.B \-\-corpus [\fIdir\fR]
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Assemble a corpus of .s files and report pass rates and failure
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reasons.
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.SH EXIT STATUS
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The mnemonic-diff mode reports through its output and exits 0; a failed
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probe or an unknown architecture exits non-zero.
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.SH EXAMPLES
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.nf
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gasm audit\-instructions amd64
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gasm audit\-instructions \-\-corpus
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gasm audit\-instructions \-\-corpus "$(go env GOROOT)/src/crypto"
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.fi
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.SH SEE ALSO
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.BR gasm (1),
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.BR gasm\-asm (1)
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