From: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
bsd-user/freebsd/os-proc.h | 34 ++++++++++++++++++++++++++++++++++
bsd-user/freebsd/os-syscall.c | 8 ++++++++
2 files changed, 42 insertions(+)
diff --git a/bsd-user/freebsd/os-proc.h b/bsd-user/freebsd/os-proc.h
index 964be4ad87..23b2f77a73 100644
--- a/bsd-user/freebsd/os-proc.h
+++ b/bsd-user/freebsd/os-proc.h
@@ -178,4 +178,38 @@ static inline abi_long do_freebsd___setugid(abi_long arg1)
return -TARGET_ENOSYS;
}
+/* fork(2) */
+static inline abi_long do_freebsd_fork(void *cpu_env)
+{
+ abi_long ret;
+ abi_ulong child_flag;
+
+ fork_start();
+ ret = fork();
+ if (ret == 0) {
+ /* child */
+ child_flag = 1;
+ target_cpu_clone_regs(cpu_env, 0);
+ } else {
+ /* parent */
+ child_flag = 0;
+ }
+
+ /*
+ * The fork system call sets a child flag in the second return
+ * value: 0 for parent process, 1 for child process.
+ */
+ set_second_rval(cpu_env, child_flag);
+
+ fork_end(child_flag);
+
+ return ret;
+}
+
+/* vfork(2) */
+static inline abi_long do_freebsd_vfork(void *cpu_env)
+{
+ return do_freebsd_fork(cpu_env);
+}
+
#endif /* BSD_USER_FREEBSD_OS_PROC_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 99af0f6b15..cb9425c9ba 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -226,6 +226,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
/*
* process system calls
*/
+ case TARGET_FREEBSD_NR_fork: /* fork(2) */
+ ret = do_freebsd_fork(cpu_env);
+ break;
+
+ case TARGET_FREEBSD_NR_vfork: /* vfork(2) */
+ ret = do_freebsd_vfork(cpu_env);
+ break;
+
case TARGET_FREEBSD_NR_execve: /* execve(2) */
ret = do_freebsd_execve(arg1, arg2, arg3);
break;
--
2.42.0