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Set R_CAUSE into trapframe in curlwp before calling mips_fpu_trap() 

for workaround PR port-mips/44639.

mipsX_user_gen_exception() in mipsX_subr.S (which may call
mips_fpu_trap()) doesn't set R_CAUSE in curlwp trapframe, while
mips1_use_intr() in locore_mips1.S (that may call mips_fpu_intr()) does.

All tests in tests/lib/libc/ieeefp on MIPS3 should pass now.
This commit is contained in:
tsutsui 2011-03-16 15:14:08 +00:00
parent a75c782742
commit 72f5d65e7e
1 changed files with 3 additions and 2 deletions
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5
sys/arch/mips/mips/trap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.228 2011/03/15 07:39:23 matt Exp $ */
/* $NetBSD: trap.c,v 1.229 2011/03/16 15:14:08 tsutsui Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -39,7 +39,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.228 2011/03/15 07:39:23 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.229 2011/03/16 15:14:08 tsutsui Exp $");
#include "opt_cputype.h" /* which mips CPU levels do we support? */
#include "opt_ddb.h"
@ -619,6 +619,7 @@ trap(uint32_t status, uint32_t cause, vaddr_t vaddr, vaddr_t pc,
#if defined(FPEMUL)
mips_emul_inst(status, cause, pc, utf);
#elif !defined(NOFPU)
utf->tf_regs[_R_CAUSE] = cause;
mips_fpu_trap(pc, utf);
#endif
userret(l);