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[PATCH v3 03/11] gdbstub: Introduce gdbserver_fork_start()
From: |
Ilya Leoshkevich |
Subject: |
[PATCH v3 03/11] gdbstub: Introduce gdbserver_fork_start() |
Date: |
Fri, 16 Feb 2024 14:05:30 +0100 |
The upcoming follow-fork-mode child support requires knowing when
fork() is about to happen in order to initialize its state. Add a hook
for that.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
bsd-user/main.c | 1 +
gdbstub/user.c | 4 ++++
include/gdbstub/user.h | 5 +++++
linux-user/main.c | 1 +
4 files changed, 11 insertions(+)
diff --git a/bsd-user/main.c b/bsd-user/main.c
index 4140edc8311..bfe6888ea89 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -106,6 +106,7 @@ void fork_start(void)
start_exclusive();
cpu_list_lock();
mmap_fork_start();
+ gdbserver_fork_start();
}
void fork_end(int child)
diff --git a/gdbstub/user.c b/gdbstub/user.c
index e17f7ece908..5024c670f85 100644
--- a/gdbstub/user.c
+++ b/gdbstub/user.c
@@ -356,6 +356,10 @@ int gdbserver_start(const char *port_or_path)
return -1;
}
+void gdbserver_fork_start(void)
+{
+}
+
static void disable_gdbstub(void)
{
CPUState *cpu;
diff --git a/include/gdbstub/user.h b/include/gdbstub/user.h
index 68b6534130c..e33f8d9a9a6 100644
--- a/include/gdbstub/user.h
+++ b/include/gdbstub/user.h
@@ -45,6 +45,11 @@ static inline int gdb_handlesig(CPUState *cpu, int sig)
*/
void gdb_signalled(CPUArchState *as, int sig);
+/**
+ * gdbserver_fork_start() - inform gdb of the upcoming fork()
+ */
+void gdbserver_fork_start(void);
+
/**
* gdbserver_fork() - disable gdb stub for child processes.
* @cs: CPU
diff --git a/linux-user/main.c b/linux-user/main.c
index e6427d72332..8c7bea1c631 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -144,6 +144,7 @@ void fork_start(void)
mmap_fork_start();
cpu_list_lock();
qemu_plugin_user_prefork_lock();
+ gdbserver_fork_start();
}
void fork_end(int child)
--
2.43.0
- [PATCH v3 00/11] gdbstub: Implement follow-fork-mode child, Ilya Leoshkevich, 2024/02/16
- [PATCH v3 03/11] gdbstub: Introduce gdbserver_fork_start(),
Ilya Leoshkevich <=
- [PATCH v3 05/11] {linux,bsd}-user: Pass pid to gdbserver_fork(), Ilya Leoshkevich, 2024/02/16
- [PATCH v3 02/11] {linux,bsd}-user: Update ts_tid after fork(), Ilya Leoshkevich, 2024/02/16
- [PATCH v3 07/11] gdbstub: Introduce gdb_handle_query_supported_user(), Ilya Leoshkevich, 2024/02/16
- [PATCH v3 08/11] gdbstub: Introduce gdb_handle_set_thread_user(), Ilya Leoshkevich, 2024/02/16
- [PATCH v3 04/11] {linux,bsd}-user: Pass pid to fork_end(), Ilya Leoshkevich, 2024/02/16