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tests/tcg: Add multiarch test for Xfer:siginfo:read stub

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Add multiarch test for testing if Xfer:siginfo:read query is properly
handled by gdbstub.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-6-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Gustavo Romero 2024-03-09 03:09:01 +00:00 committed by Alex Bennée
parent 9ae5801d35
commit bbc0543b1b
3 changed files with 49 additions and 1 deletions
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10
tests/tcg/multiarch/Makefile.target
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@ -71,6 +71,13 @@ run-gdbstub-qxfer-auxv-read: sha1
--bin $< --test $(MULTIARCH_SRC)/gdbstub/test-qxfer-auxv-read.py, \
basic gdbstub qXfer:auxv:read support)
run-gdbstub-qxfer-siginfo-read: segfault
$(call run-test, $@, $(GDB_SCRIPT) \
--gdb $(GDB) \
--qemu $(QEMU) --qargs "$(QEMU_OPTS)" \
--bin "$< -s" --test $(MULTIARCH_SRC)/gdbstub/test-qxfer-siginfo-read.py, \
basic gdbstub qXfer:siginfo:read support)
run-gdbstub-proc-mappings: sha1
$(call run-test, $@, $(GDB_SCRIPT) \
--gdb $(GDB) \
@ -128,7 +135,8 @@ 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-catch-syscalls run-gdbstub-follow-fork-mode-child \
run-gdbstub-follow-fork-mode-parent
run-gdbstub-follow-fork-mode-parent \
run-gdbstub-qxfer-siginfo-read
# ARM Compatible Semi Hosting Tests
#

26
tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py Normal file
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@ -0,0 +1,26 @@
from __future__ import print_function
#
# Test gdbstub Xfer:siginfo:read stub.
#
# The test runs a binary that causes a SIGSEGV and then looks for additional
# info about the signal through printing GDB's '$_siginfo' special variable,
# which sends a Xfer:siginfo:read query to the gdbstub.
#
# The binary causes a SIGSEGV at dereferencing a pointer with value 0xdeadbeef,
# so the test looks for and checks if this address is correctly reported by the
# gdbstub.
#
# This is launched via tests/guest-debug/run-test.py
#
import gdb
from test_gdbstub import main, report
def run_test():
"Run through the test"
gdb.execute("continue", False, True)
resp = gdb.execute("print/x $_siginfo", False, True)
report(resp.find("si_addr = 0xdeadbeef"), "Found fault address.")
main(run_test)

14
tests/tcg/multiarch/segfault.c Normal file
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@ -0,0 +1,14 @@
#include <stdio.h>
#include <string.h>
/* Cause a segfault for testing purposes. */
int main(int argc, char *argv[])
{
int *ptr = (void *)0xdeadbeef;
if (argc == 2 && strcmp(argv[1], "-s") == 0) {
/* Cause segfault. */
printf("%d\n", *ptr);
}
}