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* [Qemu-devel] [PATCH] linux-user: fix alpha signal emulation
@ 2018-04-01 20:46 Laurent Vivier
  2018-04-01 21:03 ` no-reply
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Laurent Vivier @ 2018-04-01 20:46 UTC (permalink / raw)
  To: qemu-devel; +Cc: Riku Voipio, Laurent Vivier

setup_frame() doesn't set correctly the address of the trampoline code.
The offset of retcode array must be added to the stack frame address.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 linux-user/signal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/linux-user/signal.c b/linux-user/signal.c
index 2ea3e0321f..9399f0ec47 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -6367,7 +6367,7 @@ static void setup_frame(int sig, struct target_sigaction *ka,
                    &frame->retcode[1]);
         __put_user(INSN_CALLSYS, &frame->retcode[2]);
         /* imb() */
-        r26 = frame_addr;
+        r26 = frame_addr + offsetof(struct target_sigframe, retcode);
     }
 
     unlock_user_struct(frame, frame_addr, 1);
@@ -6424,7 +6424,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
                    &frame->retcode[1]);
         __put_user(INSN_CALLSYS, &frame->retcode[2]);
         /* imb(); */
-        r26 = frame_addr;
+        r26 = frame_addr + offsetof(struct target_sigframe, retcode);
     }
 
     if (err) {
-- 
2.14.3

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2018-04-01 20:46 [Qemu-devel] [PATCH] linux-user: fix alpha signal emulation Laurent Vivier
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