diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/mac68k/mac68k/fpu.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/sys/arch/mac68k/mac68k/fpu.c b/sys/arch/mac68k/mac68k/fpu.c index ff060fb13e4..075d37f391d 100644 --- a/sys/arch/mac68k/mac68k/fpu.c +++ b/sys/arch/mac68k/mac68k/fpu.c @@ -1,4 +1,4 @@ -/* $OpenBSD: fpu.c,v 1.4 1996/06/23 16:00:35 briggs Exp $ */ +/* $OpenBSD: fpu.c,v 1.5 1996/10/14 01:15:52 briggs Exp $ */ /* $NetBSD: fpu.c,v 1.16 1996/06/11 02:56:22 scottr Exp $ */ /* @@ -46,7 +46,11 @@ #include <machine/cpu.h> #include <machine/frame.h> -extern int fpu_type; +/* + * FPU type; emulator uses FPU_NONE + */ +int fputype; + extern int *nofault; static int fpu_match __P((struct device *, void *, void *)); @@ -78,7 +82,8 @@ static char *fpu_descr[] = { "mc68881", /* 1 */ "mc68882", /* 2 */ "mc68040", /* 3 */ - "?" }; + "mc68060", /* 4 */ + "unknown" }; static void fpu_attach(parent, self, args) @@ -88,9 +93,9 @@ fpu_attach(parent, self, args) { char *descr; - fpu_type = fpu_probe(); - if ((0 <= fpu_type) && (fpu_type <= 3)) - descr = fpu_descr[fpu_type]; + fputype = fpu_probe(); + if ((0 <= fputype) && (fputype <= 3)) + descr = fpu_descr[fputype]; else descr = "unknown type"; @@ -111,7 +116,7 @@ fpu_probe() nofault = (int *) &faultbuf; if (setjmp(&faultbuf)) { nofault = (int *) 0; - return(0); + return (FPU_NONE); } /* @@ -128,9 +133,8 @@ fpu_probe() * Presumably, if we're an 040 and did not take exception * above, we have an FPU. Don't bother probing. */ - if (mmutype == MMU_68040) { - return 3; - } + if (mmutype == MMU_68040) + return (FPU_68040); /* * Presumably, this will not cause a fault--the fnop should @@ -151,11 +155,13 @@ fpu_probe() * The size of a 68881 IDLE frame is 0x18 * and a 68882 frame is 0x38 */ - if (b == 0x18) return 1; - if (b == 0x38) return 2; + if (b == 0x18) + return (FPU_68881); + if (b == 0x38) + return (FPU_68882); /* * If it's not one of the above, we have no clue what it is. */ - return 4; + return (FPU_UNKNOWN); } |