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[PATCH v4 07/10] linux-user: Remap SIGPROF when CONFIG_GPROF
From: |
Richard Henderson |
Subject: |
[PATCH v4 07/10] linux-user: Remap SIGPROF when CONFIG_GPROF |
Date: |
Tue, 22 Aug 2023 22:16:12 -0700 |
Protect the host's use of SIGPROF by remapping TARGET_SIGPROF
to one of the RT signals.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/signal.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 9d16e3c8c5..b8913968cc 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -523,8 +523,15 @@ static void signal_table_init(void)
* multiplexed over a single host signal.
* Attempts for configure "missing" signals via sigaction will be
* silently ignored.
+ *
+ * If the host is using gprof, treat SIGPROF the same way.
*/
- for (hsig = SIGRTMIN; hsig <= SIGRTMAX; hsig++) {
+ hsig = SIGRTMIN;
+#ifdef CONFIG_GPROF
+ host_to_target_signal_table[SIGPROF] = 0;
+ host_to_target_signal_table[hsig++] = TARGET_SIGPROF;
+#endif
+ for (; hsig <= SIGRTMAX; hsig++) {
tsig = hsig - SIGRTMIN + TARGET_SIGRTMIN;
if (tsig <= TARGET_NSIG) {
host_to_target_signal_table[hsig] = tsig;
--
2.34.1
- [PATCH v4 00/10] linux-user: Detect and report host crashes, Richard Henderson, 2023/08/23
- [PATCH v4 01/10] linux-user: Split out die_with_signal, Richard Henderson, 2023/08/23
- [PATCH v4 02/10] linux-user: Exit not abort in die_with_backtrace, Richard Henderson, 2023/08/23
- [PATCH v4 03/10] linux-user: Use die_with_signal with abort, Richard Henderson, 2023/08/23
- [PATCH v4 04/10] linux-user: Detect and report host crashes, Richard Henderson, 2023/08/23
- [PATCH v4 05/10] linux-user: Only register handlers for core_dump_signal by default, Richard Henderson, 2023/08/23
- [PATCH v4 07/10] linux-user: Remap SIGPROF when CONFIG_GPROF,
Richard Henderson <=
- [PATCH v4 08/10] linux-user: Simplify signal_init, Richard Henderson, 2023/08/23
- [PATCH v4 06/10] linux-user: Map unsupported signals to an out-of-bounds value, Richard Henderson, 2023/08/23
- [PATCH v4 09/10] linux-user: Split out host_sig{segv,bus}_handler, Richard Henderson, 2023/08/23
- [PATCH v4 10/10] linux-user: Detect and report host SIGILL, SIGFPE, SIGTRAP, Richard Henderson, 2023/08/23