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Check whether we have an FPU regardless of FPU_EMULATE option.

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It prevents a kernel panic when we don't have an FPU and FPU_EMULATE
option is not set.
Thanks tsutsui@ for advice.
This commit is contained in:
isaki 2013-10-14 12:20:05 +00:00
parent cb5311f9d9
commit f5af824fa5
1 changed files with 4 additions and 7 deletions
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11
sys/arch/m68k/m68k/switch_subr.s
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@ -1,4 +1,4 @@
/* $NetBSD: switch_subr.s,v 1.31 2013/09/07 19:06:29 chs Exp $ */
/* $NetBSD: switch_subr.s,v 1.32 2013/10/14 12:20:05 isaki Exp $ */
/*
* Copyright (c) 2001 The NetBSD Foundation.
@ -109,10 +109,9 @@ ENTRY(cpu_switchto)
jbsr _ASM_LABEL(m68k_fpuctx_save)
#else
#ifdef FPCOPROC
#ifdef FPU_EMULATE
tstl _C_LABEL(fputype) | Do we have an FPU?
jeq .Lcpu_switch_nofpsave | No Then don't attempt save.
#endif
lea PCB_FPCTX(%a1),%a2 | pointer to FP save area
fsave (%a2) | save FP state
#if defined(M68020) || defined(M68030) || defined(M68040)
@ -222,10 +221,9 @@ ENTRY(cpu_switchto)
moveml (%sp)+,%d0/%d1
#else
#ifdef FPCOPROC
#ifdef FPU_EMULATE
tstl _C_LABEL(fputype) | Do we have an FPU?
jeq .Lcpu_switch_nofprest | No Then don't attempt restore.
#endif
lea PCB_FPCTX(%a1),%a0 | pointer to FP save area
#if defined(M68020) || defined(M68030) || defined(M68040)
#if defined(M68060)
@ -279,10 +277,9 @@ ENTRY(savectx)
jbsr _ASM_LABEL(m68k_fpuctx_save)
#else
#ifdef FPCOPROC
#ifdef FPU_EMULATE
tstl _C_LABEL(fputype) | Do we have FPU?
jeq .Lsavectx_nofpsave | No? Then don't save state.
#endif
lea PCB_FPCTX(%a1),%a0 | pointer to FP save area
fsave (%a0) | save FP state
#if defined(M68020) || defined(M68030) || defined(M68040)