diff options
| author | bde <bde@FreeBSD.org> | 1996-10-09 18:30:08 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 1996-10-09 18:30:08 +0000 |
| commit | f9a9c0927cef7b1135d81c8a9aa213d33b8e9132 (patch) | |
| tree | 47aef901dda22dfa3003ec48836f9da8313f122e | |
| parent | 8beec6c65dacf75b397e6eb6a3ad9101b9660c22 (diff) | |
| download | FreeBSD-src-f9a9c0927cef7b1135d81c8a9aa213d33b8e9132.zip FreeBSD-src-f9a9c0927cef7b1135d81c8a9aa213d33b8e9132.tar.gz | |
Enable the i586-optimized bcopy if the cpu is a "586" and option
I586_OPTIMIZED_BCOPY is configured.
Similarly for bzero/I586_OPTIMIZED_BZERO.
Fake 586's had better have a hardware FPU with non-broken exception
handling (we mask exceptions, but broken exception handling may trap
on the instructions that do the masking). I guess this means that
the routines won't work on most 386's or FPUless 486's even when they
have a h/w FPU.
| -rw-r--r-- | sys/amd64/amd64/identcpu.c | 20 | ||||
| -rw-r--r-- | sys/i386/i386/identcpu.c | 20 |
2 files changed, 32 insertions, 8 deletions
diff --git a/sys/amd64/amd64/identcpu.c b/sys/amd64/amd64/identcpu.c index 81a24e7..0353462 100644 --- a/sys/amd64/amd64/identcpu.c +++ b/sys/amd64/amd64/identcpu.c @@ -35,9 +35,11 @@ * SUCH DAMAGE. * * from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp - * $Id: identcpu.c,v 1.4 1996/08/10 08:04:24 peter Exp $ + * $Id: identcpu.c,v 1.5 1996/09/06 23:07:02 phk Exp $ */ +#include "opt_temporary.h" /* for I586_OPTIMIZED_B* */ + #include <sys/param.h> #include <sys/systm.h> #include <sys/sysproto.h> @@ -53,9 +55,12 @@ #include <machine/md_var.h> /* XXX - should be in header file */ -extern void i486_bzero __P((void *, size_t)); -extern void i586_bzero __P((void *, size_t)); -extern void i686_bzero __P((void *, size_t)); +extern void (*bcopy_vector) __P((const void *from, void *to, size_t len)); +extern void (*ovbcopy_vector) __P((const void *from, void *to, size_t len)); + +void i486_bzero __P((void *buf, size_t len)); +void i586_bcopy __P((const void *from, void *to, size_t len)); +void i586_bzero __P((void *buf, size_t len)); void identifycpu(void); /* XXX should be in different header file */ void earlysetcpuclass(void); @@ -173,6 +178,13 @@ identifycpu(void) (i586_ctr_freq + 4999) / 1000000, ((i586_ctr_freq + 4999) / 10000) % 100); printf("586"); +#ifdef I586_OPTIMIZED_BCOPY + bcopy_vector = i586_bcopy; + ovbcopy_vector = i586_bcopy; +#endif +#ifdef I586_OPTIMIZED_BZERO + bzero = i586_bzero; +#endif break; #endif #if defined(I686_CPU) diff --git a/sys/i386/i386/identcpu.c b/sys/i386/i386/identcpu.c index 81a24e7..0353462 100644 --- a/sys/i386/i386/identcpu.c +++ b/sys/i386/i386/identcpu.c @@ -35,9 +35,11 @@ * SUCH DAMAGE. * * from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp - * $Id: identcpu.c,v 1.4 1996/08/10 08:04:24 peter Exp $ + * $Id: identcpu.c,v 1.5 1996/09/06 23:07:02 phk Exp $ */ +#include "opt_temporary.h" /* for I586_OPTIMIZED_B* */ + #include <sys/param.h> #include <sys/systm.h> #include <sys/sysproto.h> @@ -53,9 +55,12 @@ #include <machine/md_var.h> /* XXX - should be in header file */ -extern void i486_bzero __P((void *, size_t)); -extern void i586_bzero __P((void *, size_t)); -extern void i686_bzero __P((void *, size_t)); +extern void (*bcopy_vector) __P((const void *from, void *to, size_t len)); +extern void (*ovbcopy_vector) __P((const void *from, void *to, size_t len)); + +void i486_bzero __P((void *buf, size_t len)); +void i586_bcopy __P((const void *from, void *to, size_t len)); +void i586_bzero __P((void *buf, size_t len)); void identifycpu(void); /* XXX should be in different header file */ void earlysetcpuclass(void); @@ -173,6 +178,13 @@ identifycpu(void) (i586_ctr_freq + 4999) / 1000000, ((i586_ctr_freq + 4999) / 10000) % 100); printf("586"); +#ifdef I586_OPTIMIZED_BCOPY + bcopy_vector = i586_bcopy; + ovbcopy_vector = i586_bcopy; +#endif +#ifdef I586_OPTIMIZED_BZERO + bzero = i586_bzero; +#endif break; #endif #if defined(I686_CPU) |
