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target-xtensa: return ENOSYS for unimplemented simcalls 

This prevents guest from proceeding with uninitialised garbage returned
from unimplemented simcalls.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Max Filippov 2012-08-22 22:03:35 +04:00 committed by Blue Swirl
parent 0232cd355d
commit e7eee62a90
1 changed files with 2 additions and 0 deletions
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2
target-xtensa/xtensa-semi.c
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@ -218,6 +218,8 @@ void HELPER(simcall)(CPUXtensaState *env)
default: default:
qemu_log("%s(%d): not implemented\n", __func__, regs[2]); qemu_log("%s(%d): not implemented\n", __func__, regs[2]);
regs[2] = -1;
regs[3] = ENOSYS;
break; break;
} }
} }