From: Max Filippov <jcmvbkbc@gmail.com>
To: qemu-devel@nongnu.org
Cc: Max Filippov <jcmvbkbc@gmail.com>
Subject: [Qemu-devel] [PATCH for-1.2 v2] target-xtensa: return ENOSYS for unimplemented simcalls
Date: Wed, 22 Aug 2012 22:03:35 +0400 [thread overview]
Message-ID: <1345658615-5005-1-git-send-email-jcmvbkbc@gmail.com> (raw)
This prevents guest from proceeding with uninitialised garbage returned
from unimplemented simcalls.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
target-xtensa/xtensa-semi.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/target-xtensa/xtensa-semi.c b/target-xtensa/xtensa-semi.c
index 1c8a19e..6d001c2 100644
--- a/target-xtensa/xtensa-semi.c
+++ b/target-xtensa/xtensa-semi.c
@@ -218,6 +218,8 @@ void HELPER(simcall)(CPUXtensaState *env)
default:
qemu_log("%s(%d): not implemented\n", __func__, regs[2]);
+ regs[2] = -1;
+ regs[3] = ENOSYS;
break;
}
}
--
1.7.7.6
next reply other threads:[~2012-08-22 18:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 18:03 Max Filippov [this message]
2012-08-29 9:32 ` [Qemu-devel] [PATCH for-1.2 v2] target-xtensa: return ENOSYS for unimplemented simcalls Max Filippov
2012-08-29 9:38 ` Peter Maydell
2012-08-29 10:13 ` Max Filippov
2012-08-29 10:34 ` Peter Maydell
2012-08-29 10:54 ` Max Filippov
2012-09-01 11:36 ` Blue Swirl
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