diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2007-12-09 19:57:52 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2007-12-09 19:57:52 +0000 |
| commit | 2c4739364d31eba77b32cd2953a0b5c56841dfeb (patch) | |
| tree | fc979f9211b6574dbffc43dbc4eef283ef57193e /sys | |
| parent | 4285e7c3609ebc921d53ff748b9753babf478410 (diff) | |
I honestly do not remember what 88110 errata convinced me to disable
out-of-order (superscalar) execution on these processors.
Since OoO brings a nice 50% to 250% speedup (as shown by ``openssl speed''),
it is definitely worth enabling.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/m88k/m88k/db_sstep.c | 5 | ||||
| -rw-r--r-- | sys/arch/m88k/m88k/m88k_machdep.c | 6 | ||||
| -rw-r--r-- | sys/arch/mvme88k/mvme88k/locore.S | 20 |
3 files changed, 4 insertions, 27 deletions
diff --git a/sys/arch/m88k/m88k/db_sstep.c b/sys/arch/m88k/m88k/db_sstep.c index a645ff52314..6fb585bb86f 100644 --- a/sys/arch/m88k/m88k/db_sstep.c +++ b/sys/arch/m88k/m88k/db_sstep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: db_sstep.c,v 1.5 2006/05/03 18:12:52 miod Exp $ */ +/* $OpenBSD: db_sstep.c,v 1.6 2007/12/09 19:57:50 miod Exp $ */ /* * Mach Operating System * Copyright (c) 1993-1991 Carnegie Mellon University @@ -257,8 +257,7 @@ db_clear_single_step(regs) { #ifdef M88110 if (CPU_IS88110) { - /* do not remove PSR_SER as we don't enable OoO */ - regs->epsr &= ~PSR_TRACE; + regs->epsr &= ~(PSR_TRACE | PSR_SER); } #endif #ifdef M88100 diff --git a/sys/arch/m88k/m88k/m88k_machdep.c b/sys/arch/m88k/m88k/m88k_machdep.c index 4f2f01af9f5..2a8cd14b131 100644 --- a/sys/arch/m88k/m88k/m88k_machdep.c +++ b/sys/arch/m88k/m88k/m88k_machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: m88k_machdep.c,v 1.38 2007/12/05 22:09:14 miod Exp $ */ +/* $OpenBSD: m88k_machdep.c,v 1.39 2007/12/09 19:57:50 miod Exp $ */ /* * Copyright (c) 1998, 1999, 2000, 2001 Steve Murphree, Jr. * Copyright (c) 1996 Nivas Madhur @@ -136,10 +136,6 @@ setregs(p, pack, stack, retval) * graphics unit, fp enabled */ tf->tf_epsr = PSR_SRM | PSR_SFD; - /* - * XXX disable OoO for now... - */ - tf->tf_epsr |= PSR_SER; } #endif #ifdef M88100 diff --git a/sys/arch/mvme88k/mvme88k/locore.S b/sys/arch/mvme88k/mvme88k/locore.S index 0b9a04d0b7b..a8b44ff1bbb 100644 --- a/sys/arch/mvme88k/mvme88k/locore.S +++ b/sys/arch/mvme88k/mvme88k/locore.S @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.S,v 1.58 2007/12/05 22:12:30 miod Exp $ */ +/* $OpenBSD: locore.S,v 1.59 2007/12/09 19:57:51 miod Exp $ */ /* * Copyright (c) 2005, Miodrag Vallat. * Copyright (c) 1998 Steve Murphree, Jr. @@ -169,16 +169,7 @@ ASLOCAL(main_start) set r11, r0, 1<PSR_SUPERVISOR_MODE_BIT> set r11, r11, 1<PSR_INTERRUPT_DISABLE_BIT> set r11, r11, 1<PSR_GRAPHICS_DISABLE_BIT> - /* - * XXX On 88110 processors, force serial instruction execution for now. - * Situation where OoO would break will be hopefully taken care of in - * the near future -- miod - */ -#if 0 clr r11, r11, 1<PSR_SERIAL_MODE_BIT> -#else - set r11, r11, 1<PSR_SERIAL_MODE_BIT> -#endif set r11, r11, 1<PSR_SERIALIZE_BIT> stcr r11, PSR FLUSH_PIPELINE @@ -264,16 +255,7 @@ GLOBAL(secondary_start) set r11, r0, 1<PSR_SUPERVISOR_MODE_BIT> set r11, r11, 1<PSR_INTERRUPT_DISABLE_BIT> set r11, r11, 1<PSR_GRAPHICS_DISABLE_BIT> - /* - * XXX On 88110 processors, force serial instruction execution for now. - * Situation where OoO would break will be hopefully taken care of in - * the near future -- miod - */ -#if 0 clr r11, r11, 1<PSR_SERIAL_MODE_BIT> -#else - set r11, r11, 1<PSR_SERIAL_MODE_BIT> -#endif set r11, r11, 1<PSR_SERIALIZE_BIT> stcr r11, PSR FLUSH_PIPELINE |