--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2008-2022 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Test gdb's "return" command in reverse. The code for this test is based
+ on the code in test finish-reverse.c. The code was modified to call the
+ function via a function pointer so the test will behave the same on all
+ platforms. See comments in finish-reverse-bkpt.exp. */
+
+int void_test = 0;
+
+void
+void_func ()
+{
+ void_test = 1; /* VOID FUNC */
+}
+
+int
+main (int argc, char **argv)
+{
+ int i;
+ void (*funp) (void) = void_func;
+
+ funp ();
+ return 0;
+}
# the functions entry would be ignored. Make sure the bug doesn't
# reappear.
+# The test sets a breakpoint with the command break *void_func to set a
+# breakpoint on the first instruction of the function. The issue is on
+# PowerPC it uses Global Entry Points (GEP) and Local Entry Points (LEP).
+# The GEP is the first instruction in the function. It sets up register
+# r2 and then reaches the LEP.
+#
+# <void_func>:
+# lis r2,4098 <- GEP
+# addi r2,r2,32512
+# mflr r0 <- LEP
+# std r0,16(r1)
+# ....
+
+#
+# The command break *void_func sets the breakpoint on the GEP. Calling
+# the function with void_func() will enter the function via the LEP. So,
+# this test needs to use a function pointer to call void_func() so the
+# function will be entered via the GEP to work as designed on PowerPC in
+# addition to non-PowerPC systems. On non-PowerPC systems, the GEP and LEP
+# are the same.
+
if ![supports_reverse] {
return
}
-standard_testfile finish-reverse.c
+standard_testfile
if { [prepare_for_testing "failed to prepare" "$testfile" $srcfile] } {
return -1
gdb_test_no_output "record" "turn on process record"
}
+# Start the test.
set breakloc [gdb_get_line_number "VOID FUNC" "$srcfile"]
gdb_test "tbreak void_func" \
"Temporary breakpoint $decimal at .*$srcfile, line $breakloc\." \
--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2008-2022 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stdlib.h>
+#include <string.h>
+
+/* Test reverse finish command. The code for this test is based on the code
+ in test step-reverse.c. The code was modified to call the function via
+ a function pointer so the test will behave the same on all platforms.
+ See comments in next-reverse-bkpt-over-sr.exp. */
+
+int myglob = 0;
+
+int
+callee() {
+ return myglob++;
+}
+
+int
+main () {
+ int (*funp) (void) = callee;
+
+ /* Test next-reverse-bkpt-over-sr.exp needs to call function callee using
+ a function pointer to work correctly on PowerPC. See comments in
+ next-reverse-bkpt-over-sr.exp. */
+ funp (); /* FUNCTION PTR CALL TO CALLEE */
+
+ exit (0); /* END OF MAIN */
+}
# along with this program. If not, see <http://www.gnu.org/licenses/>. */
# This file is part of the GDB testsuite. It tests reverse stepping.
-# Lots of code borrowed from "step-test.exp".
-
#
# reverse-next over a function call sets a step-resume breakpoint at
# callee's entry point, runs to it, and then does an extra single-step
# to get at the callee's caller. Test that a user breakpoint set at
# the same location as the step-resume breakpoint isn't ignored.
#
+# The test sets a breakpoint with the command break *callee to set a
+# breakpoint on the first instruction of the function. The issue is on
+# PowerPC it uses Global Entry Points (GEP) and Local Entry Points (LEP).
+# The GEP is the first instruction in the function. It sets up register
+# r2 and then reaches the LEP.
+#
+# <callee>:
+# lis r2,4098 <- GEP
+# addi r2,r2,32512
+# mflr r0 <- LEP
+# std r0,16(r1)
+
+#
+# The command break *callee sets the breakpoint on the GEP. Calling
+# the function with callee() will enter the function via the LEP. So,
+# this test needs to use a function pointer to call callee() so the
+# function will be entered via the GEP to work as designed on PowerPC in
+# addition to non-PowerPC systems. On non-PowerPC systems, the GEP and LEP
+# are the same.
if ![supports_reverse] {
return
}
-standard_testfile step-reverse.c
+standard_testfile
if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } {
return -1
gdb_test_no_output "record" "turn on process record"
}
-set lineno [gdb_get_line_number "STEP INTO THIS CALL"]
-gdb_test "advance $lineno" ".*STEP INTO THIS CALL.*" "get past callee call"
+# Stop after the function pointer call to test the reverse-next command.
+set lineno [gdb_get_line_number "END OF MAIN"]
+gdb_test "advance $lineno" ".*END OF MAIN.*" \
+ "get past callee call"
gdb_test "b \*callee" "" "set breakpoint at callee's entry"
"reverse-next over call trips user breakpoint at function entry"
gdb_test "up" \
- ".*NEXT OVER THIS CALL.*" \
+ ".*FUNCTION PTR CALL TO CALLEE.*" \
"stopped at the right callee call"
projects / binutils-gdb.git / commitdiff