[PATCH v4 05/40] bsd-user: Add signal system call dispatch

Wire up the signal-related system calls in the FreeBSD syscall
dispatcher: sigaction, sigprocmask, sigpending, sigsuspend, sigreturn,
sigwait, sigwaitinfo, sigqueue, sigaltstack, kill, and pdkill.

Signed-off-by: Stacey Son <[email protected]>
Signed-off-by: Kyle Evans <[email protected]>
Assisted-by: Claude Opus 4.6 (1M context)
Reviewed-by: Pierrick Bouvier <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Acked-by: Richard Henderson <[email protected]>
Signed-off-by: Warner Losh <[email protected]>
---
 bsd-user/freebsd/os-syscall.c | 48 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 7fefdb569f..06148fe3ce 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -43,6 +43,7 @@
 /* BSD dependent syscall shims */
 #include "os-stat.h"
 #include "os-proc.h"
+#include "os-signal.h"
 #include "os-misc.h"
 
 /* I/O */
@@ -950,6 +951,53 @@ static abi_long freebsd_syscall(CPUArchState *env, int num, abi_long arg1,
         ret = do_bsd_getdtablesize();
         break;
 
+        /*
+         * signal system calls
+         */
+    case TARGET_FREEBSD_NR_sigaction: /* sigaction(2) */
+        ret = do_bsd_sigaction(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_sigprocmask: /* sigprocmask(2) */
+        ret = do_bsd_sigprocmask(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_sigpending: /* sigpending(2) */
+        ret = do_bsd_sigpending(arg1);
+        break;
+
+    case TARGET_FREEBSD_NR_sigsuspend: /* sigsuspend(2) */
+        ret = do_bsd_sigsuspend(env, arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_sigreturn: /* sigreturn(2) */
+        ret = do_bsd_sigreturn(env, arg1);
+        break;
+
+    case TARGET_FREEBSD_NR_sigwait: /* sigwait(2) */
+        ret = do_bsd_sigwait(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_sigwaitinfo: /* sigwaitinfo(2) */
+        ret = do_bsd_sigwaitinfo(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_sigqueue: /* sigqueue(2) */
+        ret = do_bsd_sigqueue(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_sigaltstack: /* sigaltstack(2) */
+        ret = do_bsd_sigaltstack(env, arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_kill: /* kill(2) */
+        ret = do_bsd_kill(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_pdkill: /* pdkill(2) */
+        ret = do_freebsd_pdkill(arg1, arg2);
+        break;
+
         /*
          * sys{ctl, arch, call}
          */

-- 
2.55.0