supporting more instructions seen in stdlib

script/stdlibopcodes

@@ -11,12 +11,14 @@ 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
+find ${GOROOT}/src -name '*_amd64.s' | grep -v testdata | while read s; do
   gcc -E -I${GOROOT}/pkg/include -I${include} ${s} >>${asm}
 done
 
 # Extract instructions.
-awk '/^[[:space:]]+[A-Z0-9]+[[:space:]]+/ { print $1 }' ${asm} | sort | uniq
+awk '/^[[:space:]]+[A-Z0-9]+[[:space:]]+/ { print $1 }' ${asm} | \
+  sort | uniq | \
+  grep -Ev '(TEXT|FUNCDATA|PCDATA|BYTE|WORD)'
 
 # Clean.
 rm -rf ${workdir}