execve: Clear sigaltstack and fp_regs

Fujitsu: POSTK_DEBUG_TEMP_FIX_19
Refs: #976
Change-Id: I16895eab13eecbb47b7e6da961fae82ee5e570ee

test/issues/976/CT_003.c

@@ -0,0 +1,48 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "./test_chk.h"
+
+#include <fenv.h>
+
+#define TEST_NAME "CT_003"
+
+int main(int argc, char *argv[])
+{
+	fenv_t fenv;
+	int rc = 0;
+	int round = 0;
+	char *exargv[3] = {argv[0], "stop", NULL};
+	char *exenvp[1] = {NULL};
+
+	printf("*** %s start ********************************\n", TEST_NAME);
+	round = fegetround();
+	OKNG(round != FE_TONEAREST, "fegetround  returned %d"
+		"\n      (expect return is FE_TONEAREST(%d))",
+		round, FE_TONEAREST);
+
+	rc = fesetround(FE_TOWARDZERO);
+	OKNG(rc != 0, "fesetround(FE_TOWARDZERO) returned %d"
+		"\n      (expect return is 0)", rc);
+
+	round = fegetround();
+	OKNG(round != FE_TOWARDZERO, "fegetround  returned %d"
+		"\n      (expect return is FE_TOWARDZERO(%d))",
+		round, FE_TOWARDZERO);
+
+
+	if (argc < 2) {
+		printf("** Re-run by execve\n");
+		execve(exargv[0], exargv, exenvp);
+	}
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}