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Do something a lot closer to the right thing for FPU_EMULATE/FPSP/040 

and subsets thereof.
This commit is contained in:
briggs 1995-06-25 02:45:14 +00:00
parent f9f989f545
commit fc6fb65d62
2 changed files with 18 additions and 11 deletions
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25
sys/arch/mac68k/mac68k/locore.s
View File

@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.37 1995/06/21 03:36:27 briggs Exp $ */
/* $NetBSD: locore.s,v 1.38 1995/06/25 02:45:14 briggs Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -270,17 +270,22 @@ Lstkadj:
*/
_fpfline:
#if defined(M68040)
cmpw #0x202c,sp@(6) | format type 2?
jne _illinst | no, not an FP emulation
cmpl #MMU_68040,_mmutype | 68040?
jne Lfp_unimp | no, skip FPSP
cmpw #0x202c,sp@(6) | format type 2?
jne _illinst | no, treat as illinst
Ldofp_unimp:
#ifdef FPSP
.globl fpsp_unimp
jmp fpsp_unimp | yes, go handle it
#else
jmp fpsp_unimp | go handle in fpsp
#endif
Lfp_unimp:
#endif
#ifdef FPU_EMULATE
clrl sp@- | pad SR to longword
moveml #0xFFFF,sp@- | save user registers
moveq #T_FPEMULI,d0 | denote it as an FP emulation trap.
jra fault | do it.
#endif
#else
jra _illinst
#endif
@ -288,16 +293,18 @@ _fpfline:
_fpunsupp:
#if defined(M68040)
cmpl #MMU_68040,_mmutype | 68040?
jne _illinst | no, treat as illinst
jne Lfp_unsupp | no, treat as illinst
#ifdef FPSP
.globl fpsp_unsupp
jmp fpsp_unsupp | yes, go handle it
#else
#endif
Lfp_unsupp:
#endif
#ifdef FPU_EMULATE
clrl sp@- | pad SR to longword
moveml #0xFFFF,sp@- | save user registers
moveq #T_FPEMULD,d0 | denote it as an FP emulation trap.
jra fault | do it.
#endif
#else
jra _illinst
#endif

4
sys/arch/mac68k/mac68k/trap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.29 1995/06/21 03:45:21 briggs Exp $ */
/* $NetBSD: trap.c,v 1.30 1995/06/25 02:45:17 briggs Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -549,7 +549,7 @@ copyfault:
break;
}
}
trapsignal(p, i, ucode);
if (i) trapsignal(p, i, ucode);
if ((type & T_USER) == 0)
return;
out: