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[Qemu-devel] [PATCH for-1.2 v2] target-xtensa: return ENOSYS for unimple
From: |
Max Filippov |
Subject: |
[Qemu-devel] [PATCH for-1.2 v2] target-xtensa: return ENOSYS for unimplemented simcalls |
Date: |
Wed, 22 Aug 2012 22:03:35 +0400 |
This prevents guest from proceeding with uninitialised garbage returned
from unimplemented simcalls.
Signed-off-by: Max Filippov <address@hidden>
---
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
- [Qemu-devel] [PATCH for-1.2 v2] target-xtensa: return ENOSYS for unimplemented simcalls,
Max Filippov <=