10:38 a.m.
From: Ilya Leoshkevich <iii(a)linux.ibm.com>
Check that adding/removing syscall catchpoints works.
Reviewed-by: Alex Bennée <alex.bennee(a)linaro.org>
Signed-off-by: Ilya Leoshkevich <iii(a)linux.ibm.com>
Message-Id: <20240202152506.279476-6-iii(a)linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee(a)linaro.org>
---
tests/tcg/multiarch/catch-syscalls.c | 51 ++++++++++++++++++
tests/tcg/multiarch/Makefile.target | 10 +++-
tests/tcg/multiarch/gdbstub/catch-syscalls.py | 53 +++++++++++++++++++
3 files changed, 113 insertions(+), 1 deletion(-)
create mode 100644 tests/tcg/multiarch/catch-syscalls.c
create mode 100644 tests/tcg/multiarch/gdbstub/catch-syscalls.py
diff --git a/tests/tcg/multiarch/catch-syscalls.c b/tests/tcg/multiarch/catch-syscalls.c
new file mode 100644
index 00000000000..d1ff1936a7a
--- /dev/null
+++ b/tests/tcg/multiarch/catch-syscalls.c
@@ -0,0 +1,51 @@
+/*
+ * Test GDB syscall catchpoints.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <unistd.h>
+
+const char *catch_syscalls_state = "start";
+
+void end_of_main(void)
+{
+}
+
+int main(void)
+{
+ int ret = EXIT_FAILURE;
+ char c0 = 'A', c1;
+ int fd[2];
+
+ catch_syscalls_state = "pipe2";
+ if (pipe2(fd, 0)) {
+ goto out;
+ }
+
+ catch_syscalls_state = "write";
+ if (write(fd[1], &c0, sizeof(c0)) != sizeof(c0)) {
+ goto out_close;
+ }
+
+ catch_syscalls_state = "read";
+ if (read(fd[0], &c1, sizeof(c1)) != sizeof(c1)) {
+ goto out_close;
+ }
+
+ catch_syscalls_state = "check";
+ if (c0 == c1) {
+ ret = EXIT_SUCCESS;
+ }
+
+out_close:
+ catch_syscalls_state = "close";
+ close(fd[0]);
+ close(fd[1]);
+
+out:
+ catch_syscalls_state = "end";
+ end_of_main();
+ return ret;
+}
diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target
index 315a2e13588..e10951a8016 100644
--- a/tests/tcg/multiarch/Makefile.target
+++ b/tests/tcg/multiarch/Makefile.target
@@ -108,13 +108,21 @@ run-gdbstub-prot-none: prot-none
--bin $< --test $(MULTIARCH_SRC)/gdbstub/prot-none.py, \
accessing PROT_NONE memory)
+run-gdbstub-catch-syscalls: catch-syscalls
+ $(call run-test, $@, $(GDB_SCRIPT) \
+ --gdb $(GDB) \
+ --qemu $(QEMU) --qargs "$(QEMU_OPTS)" \
+ --bin $< --test $(MULTIARCH_SRC)/gdbstub/catch-syscalls.py, \
+ hitting a syscall catchpoint)
+
else
run-gdbstub-%:
$(call skip-test, "gdbstub test $*", "need working gdb with $(patsubst
-%,,$(TARGET_NAME)) support")
endif
EXTRA_RUNS += run-gdbstub-sha1 run-gdbstub-qxfer-auxv-read \
run-gdbstub-proc-mappings run-gdbstub-thread-breakpoint \
- run-gdbstub-registers run-gdbstub-prot-none
+ run-gdbstub-registers run-gdbstub-prot-none \
+ run-gdbstub-catch-syscalls
# ARM Compatible Semi Hosting Tests
#
diff --git a/tests/tcg/multiarch/gdbstub/catch-syscalls.py
b/tests/tcg/multiarch/gdbstub/catch-syscalls.py
new file mode 100644
index 00000000000..ccce35902fb
--- /dev/null
+++ b/tests/tcg/multiarch/gdbstub/catch-syscalls.py
@@ -0,0 +1,53 @@
+"""Test GDB syscall catchpoints.
+
+SPDX-License-Identifier: GPL-2.0-or-later
+"""
+from test_gdbstub import main, report
+
+
+def check_state(expected):
+ """Check the catch_syscalls_state value"""
+ actual = gdb.parse_and_eval("catch_syscalls_state").string()
+ report(actual == expected, "{} == {}".format(actual, expected))
+
+
+def run_test():
+ """Run through the tests one by one"""
+ gdb.Breakpoint("main")
+ gdb.execute("continue")
+
+ # Check that GDB stops for pipe2/read calls/returns, but not for write.
+ gdb.execute("delete")
+ try:
+ gdb.execute("catch syscall pipe2 read")
+ except gdb.error as exc:
+ exc_str = str(exc)
+ if "not supported on this architecture" in exc_str:
+ print("SKIP: {}".format(exc_str))
+ return
+ raise
+ for _ in range(2):
+ gdb.execute("continue")
+ check_state("pipe2")
+ for _ in range(2):
+ gdb.execute("continue")
+ check_state("read")
+
+ # Check that deletion works.
+ gdb.execute("delete")
+ gdb.Breakpoint("end_of_main")
+ gdb.execute("continue")
+ check_state("end")
+
+ # Check that catch-all works (libc should at least call exit).
+ gdb.execute("delete")
+ gdb.execute("catch syscall")
+ gdb.execute("continue")
+ gdb.execute("delete")
+ gdb.execute("continue")
+
+ exitcode = int(gdb.parse_and_eval("$_exitcode"))
+ report(exitcode == 0, "{} == 0".format(exitcode))
+
+
+main(run_test)
--
2.39.2