configurator: HAVE_STACK_GROWS_UPWARDS
authorRusty Russell <rusty@rustcorp.com.au>
Mon, 21 Mar 2011 02:44:03 +0000 (13:14 +1030)
committerRusty Russell <rusty@rustcorp.com.au>
Mon, 21 Mar 2011 02:44:03 +0000 (13:14 +1030)
config.h
tools/configurator/configurator.c

index 22e6c2f97565aafde65f9a6e12c2cb9c10394913..682b4ce230fe479af6e64aa4f8572fe6095a637a 100644 (file)
--- a/config.h
+++ b/config.h
@@ -34,6 +34,7 @@
 #define HAVE_LITTLE_ENDIAN 1
 #define HAVE_MMAP 1
 #define HAVE_NESTED_FUNCTIONS 1
+#define HAVE_STACK_GROWS_UPWARDS 0
 #define HAVE_STATEMENT_EXPR 1
 #define HAVE_TYPEOF 1
 #define HAVE_UTIME 1
index 837ef8ce00ee9302605682bb27748287a369a4da..56880fb1875b066a6eddc3b99954ca65b0158cec 100644 (file)
 static int verbose;
 
 enum test_style {
-       EXECUTE,
-       OUTSIDE_MAIN,
-       DEFINES_FUNC,
-       INSIDE_MAIN
+       OUTSIDE_MAIN            = 0x1,
+       DEFINES_FUNC            = 0x2,
+       INSIDE_MAIN             = 0x4,
+       DEFINES_EVERYTHING      = 0x8,
+       EXECUTE                 = 0x8000
 };
 
 struct test {
@@ -61,7 +62,7 @@ static struct test tests[] = {
          "static int __attribute__((unused)) func(int x) { return x; }" },
        { "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL,
          "static int __attribute__((used)) func(int x) { return x; }" },
-       { "HAVE_BIG_ENDIAN", EXECUTE, NULL,
+       { "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
          "union { int i; char c[sizeof(int)]; } u;\n"
          "u.i = 0x01020304;\n"
          "return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;" },
@@ -101,7 +102,7 @@ static struct test tests[] = {
        { "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL,
          "#include <unistd.h>\n"
          "static int func(void) { return getpagesize(); }" },
-       { "HAVE_LITTLE_ENDIAN", EXECUTE, NULL,
+       { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
          "union { int i; char c[sizeof(int)]; } u;\n"
          "u.i = 0x01020304;\n"
          "return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;" },
@@ -117,6 +118,16 @@ static struct test tests[] = {
          "     void add(int val2) { val += val2; }\n"
          "     return add;\n"
          "}\n" },
+       { "HAVE_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL,
+         "static long nest(const void *base, unsigned int i)\n"
+         "{\n"
+         "     if (i == 0)\n"
+         "             return (const char *)&i - (const char *)base;\n"
+         "     return nest(base, i-1);\n"
+         "}\n"
+         "int main(int argc, char *argv[]) {\n"
+         "     return (nest(&argc, argc) > 0) ? 0 : 1\n;"
+         "}\n" },
        { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL,
          "return ({ int x = argc; x == argc ? 0 : 1; });" },
        { "HAVE_TYPEOF", INSIDE_MAIN, NULL,
@@ -253,8 +264,7 @@ static bool run_test(const char *cmd, struct test *test)
                err(1, "creating %s", INPUT_FILE);
 
        fprintf(outf, "%s", PRE_BOILERPLATE);
-       switch (test->style) {
-       case EXECUTE:
+       switch (test->style & ~EXECUTE) {
        case INSIDE_MAIN:
                fprintf(outf, "%s", MAIN_START_BOILERPLATE);
                fprintf(outf, "%s", test->fragment);
@@ -273,6 +283,12 @@ static bool run_test(const char *cmd, struct test *test)
                fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
                fprintf(outf, "%s", MAIN_END_BOILERPLATE);
                break;
+       case DEFINES_EVERYTHING:
+               fprintf(outf, "%s", test->fragment);
+               break;
+       default:
+               abort();
+
        }
        fclose(outf);
 
@@ -285,7 +301,7 @@ static bool run_test(const char *cmd, struct test *test)
                        printf("Compile %s for %s, status %i: %s\n",
                               status ? "fail" : "warning",
                               test->name, status, output);
-               if (test->style == EXECUTE)
+               if (test->style & EXECUTE)
                        errx(1, "Test for %s did not compile:\n%s",
                             test->name, output);
                test->answer = false;
@@ -294,9 +310,9 @@ static bool run_test(const char *cmd, struct test *test)
                /* Compile succeeded. */
                free(output);
                /* We run INSIDE_MAIN tests for sanity checking. */
-               if (test->style == EXECUTE || test->style == INSIDE_MAIN) {
+               if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
                        output = run("./" OUTPUT_FILE, &status);
-                       if (test->style == INSIDE_MAIN && status != 0)
+                       if (!(test->style & EXECUTE) && status != 0)
                                errx(1, "Test for %s failed with %i:\n%s",
                                     test->name, status, output);
                        if (verbose && status)