diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2011-05-25 21:22:28 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2011-05-25 21:22:28 +0000 |
| commit | 9e363f9da59a23bb25eec4cbc9ccc02d9bd5f61c (patch) | |
| tree | fcb60405ccbd27755b5c5244fd479d5f41f5497e | |
| parent | c5c4621a5cf4b6a6d2e8b59055e95898e06bf1b4 (diff) | |
Set UX and SX in the system register early in boot. While not necessary on
the real hardware, some emulators (such as those which name start with `qe'
and end in `mu' and are four letters long) expect the cpu behaviour to
honour the value of these bits. This is not worth doing but it's cheap.
| -rw-r--r-- | sys/arch/loongson/loongson/machdep.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/arch/loongson/loongson/machdep.c b/sys/arch/loongson/loongson/machdep.c index f43be417862..4851338ad5c 100644 --- a/sys/arch/loongson/loongson/machdep.c +++ b/sys/arch/loongson/loongson/machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: machdep.c,v 1.27 2011/03/31 20:37:44 miod Exp $ */ +/* $OpenBSD: machdep.c,v 1.28 2011/05/25 21:22:27 miod Exp $ */ /* * Copyright (c) 2009, 2010 Miodrag Vallat. @@ -209,6 +209,13 @@ mips_init(int32_t argc, int32_t argv, int32_t envp, int32_t cv, extern void xtlb_miss; /* + * Make sure we can access the extended address space. + * This is not necessary on real hardware, but some emulators + * are not aware of this. + */ + setsr(getsr() | SR_KX | SR_UX); + + /* * Clear the compiled BSS segment in OpenBSD code. * PMON is supposed to have done this, though. */ |