From 46f4f76d332d8c2b4eb24c8e6f91ac8bdc205733 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@bsdimp.com>
Date: Sat, 8 Jan 2022 21:40:28 -0700
Subject: bsd-user/signal.c: setup_frame

setup_frame sets up a signalled stack frame. Associated routines to
extract the pointer to the stack frame and to support alternate stacks.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 bsd-user/qemu.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'bsd-user/qemu.h')

diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index 1648a509b9..de20650a00 100644
--- a/bsd-user/qemu.h
+++ b/bsd-user/qemu.h
@@ -107,7 +107,8 @@ typedef struct TaskState {
      */
     sigset_t signal_mask;
 
-    uint8_t stack[];
+    /* This thread's sigaltstack, if it has one */
+    struct target_sigaltstack sigaltstack_used;
 } __attribute__((aligned(16))) TaskState;
 
 void stop_all_tasks(void);
-- 
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