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Add a memory clobber to alpha_pal_swapctx() and alpha_pal_swpipl();

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the former affects the address space, and the latter can let interrupt
handlers in to clobber memory.
This commit is contained in:
thorpej 2001-12-18 04:18:22 +00:00
parent 8c8f0f0f82
commit c285667b3c
1 changed files with 3 additions and 3 deletions
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6
sys/arch/alpha/include/alpha_cpu.h
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@ -1,4 +1,4 @@
/* $NetBSD: alpha_cpu.h,v 1.42 2001/07/17 20:54:58 thorpej Exp $ */ /* $NetBSD: alpha_cpu.h,v 1.43 2001/12/18 04:18:22 thorpej Exp $ */
/* /*
* Copyright (c) 1996 Carnegie-Mellon University. * Copyright (c) 1996 Carnegie-Mellon University.
@ -430,7 +430,7 @@ alpha_pal_swpctx(unsigned long ctx)
: "=r" (a0), "=r" (v0) : "=r" (a0), "=r" (v0)
: "i" (PAL_OSF1_swpctx), "0" (a0) : "i" (PAL_OSF1_swpctx), "0" (a0)
/* clobbers t0, t8..t11, a0 (above) */ /* clobbers t0, t8..t11, a0 (above) */
: "$1", "$22", "$23", "$24", "$25"); : "$1", "$22", "$23", "$24", "$25", "memory");
return (v0); return (v0);
} }
@ -445,7 +445,7 @@ alpha_pal_swpipl(unsigned long ipl)
: "=r" (a0), "=r" (v0) : "=r" (a0), "=r" (v0)
: "i" (PAL_OSF1_swpipl), "0" (a0) : "i" (PAL_OSF1_swpipl), "0" (a0)
/* clobbers t0, t8..t11, a0 (above) */ /* clobbers t0, t8..t11, a0 (above) */
: "$1", "$22", "$23", "$24", "$25"); : "$1", "$22", "$23", "$24", "$25", "memory");
return (v0); return (v0);
} }