#!/bin/bash -e

eval $(go env)

workdir=$(mktemp -d)

# Provide stub "go_asm.h".
include=${workdir}/include
mkdir -p ${include}
echo '#define get_tls ' > ${include}/go_asm.h

# Preprocess all assembly files.
asm=${workdir}/all.s
find ${GOROOT}/src -name '*_amd64.s' | while read s; do
  gcc -E -I${GOROOT}/pkg/include -I${include} ${s} >>${asm}
done

# Extract instructions.
awk '/^[[:space:]]+[A-Z0-9]+[[:space:]]+/ { print $1 }' ${asm} | sort | uniq

# Clean.
rm -rf ${workdir}