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-rw-r--r--arch/x86/tools/gen-insn-attr-x86.awk20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/tools/gen-insn-attr-x86.awk b/arch/x86/tools/gen-insn-attr-x86.awk
index 93b62c92d044..19ba096b7dd1 100644
--- a/arch/x86/tools/gen-insn-attr-x86.awk
+++ b/arch/x86/tools/gen-insn-attr-x86.awk
@@ -4,7 +4,25 @@
#
# Usage: awk -f gen-insn-attr-x86.awk x86-opcode-map.txt > inat-tables.c
+# Awk implementation sanity check
+function check_awk_implement() {
+ if (!match("abc", "[[:lower:]]+"))
+ return "Your awk doesn't support charactor-class."
+ if (sprintf("%x", 0) != "0")
+ return "Your awk has a printf-format problem."
+ return ""
+}
+
BEGIN {
+ # Implementation error checking
+ awkchecked = check_awk_implement()
+ if (awkchecked != "") {
+ print "Error: " awkchecked > "/dev/stderr"
+ print "Please try to use gawk." > "/dev/stderr"
+ exit 1
+ }
+
+ # Setup generating tables
print "/* x86 opcode map generated from x86-opcode-map.txt */"
print "/* Do not change this code. */"
ggid = 1
@@ -293,6 +311,8 @@ function convert_operands(opnd, i,imm,mod)
}
END {
+ if (awkchecked != "")
+ exit 1
# print escape opcode map's array
print "/* Escape opcode map array */"
print "const insn_attr_t const *inat_escape_tables[INAT_ESC_MAX + 1]" \