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-rw-r--r--scripts/gen-as-const.awk63
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diff --git a/scripts/gen-as-const.awk b/scripts/gen-as-const.awk
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-# Script used in producing headers of assembly constants from C expressions.
-# The input to this script looks like:
-#	#cpp-directive ...
-#	NAME1
-#	NAME2 expression ...
-# The output of this script is C code to be run through gcc -S and then
-# massaged to extract the integer constant values of the given C expressions.
-# A line giving just a name implies an expression consisting of just that name.
-
-BEGIN { started = 0 }
-
-# cpp directives go straight through.
-/^#/ { print; next }
-
-NF >= 1 && !started {
-  if (test) {
-    print "\n#include <inttypes.h>";
-    print "\n#include <stdio.h>";
-    print "\n#include <bits/wordsize.h>";
-    print "\n#if __WORDSIZE == 64";
-    print "\ntypedef uint64_t c_t;";
-    print "\n#define U(n) UINT64_C (n)";
-    print "\n#define PRI PRId64";
-    print "\n#else";
-    print "\ntypedef uint32_t c_t;";
-    print "\n#define U(n) UINT32_C (n)";
-    print "\n#define PRI PRId32";
-    print "\n#endif";
-    print "\nstatic int do_test (void)\n{\n  int bad = 0, good = 0;\n";
-    print "#define TEST(name, source, expr) \\\n" \
-      "  if (U (asconst_##name) != (c_t) (expr)) { ++bad;" \
-      " fprintf (stderr, \"%s: %s is %\" PRI \" but %s is %\"PRI \"\\n\"," \
-      " source, #name, U (asconst_##name), #expr, (c_t) (expr));" \
-      " } else ++good;\n";
-  }
-  else
-    print "void dummy(void) {";
-  started = 1;
-}
-
-# Separator.
-$1 == "--" { next }
-
-NF == 1 { sub(/^.*$/, "& &"); }
-
-NF > 1 {
-  name = $1;
-  sub(/^[^ 	]+[ 	]+/, "");
-  if (test)
-    print "  TEST (" name ", \"" FILENAME ":" FNR "\", " $0 ")";
-  else
-    printf "asm (\"@@@name@@@%s@@@value@@@%%0@@@end@@@\" : : \"i\" ((long) %s));\n",
-      name, $0;
-}
-
-END {
-  if (test) {
-    print "  printf (\"%d errors in %d tests\\n\", bad, good + bad);"
-    print "  return bad != 0 || good == 0;\n}\n";
-    print "#define TEST_FUNCTION do_test ()";
-  }
-  else if (started) print "}";
-}