diff options
| author | kstailey <kstailey@cvs.openbsd.org> | 1997-02-14 18:02:00 +0000 |
|---|---|---|
| committer | kstailey <kstailey@cvs.openbsd.org> | 1997-02-14 18:02:00 +0000 |
| commit | ec4406dcfdc51482dfa213c22d01bf6a7155c2a2 (patch) | |
| tree | 02f89188f6e4e2d81db449942753b1aa09b57614 /sys | |
| parent | 7fabe79fca48742ba4b8966e73a45d11f347e000 (diff) | |
change spl0 from macro to assember function in locore.s
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/sun3/include/param.h | 6 | ||||
| -rw-r--r-- | sys/arch/sun3/sun3/locore.s | 22 |
2 files changed, 25 insertions, 3 deletions
diff --git a/sys/arch/sun3/include/param.h b/sys/arch/sun3/include/param.h index a16a48420a9..266312289d4 100644 --- a/sys/arch/sun3/include/param.h +++ b/sys/arch/sun3/include/param.h @@ -1,4 +1,4 @@ -/* $OpenBSD: param.h,v 1.9 1997/02/14 17:57:06 kstailey Exp $ */ +/* $OpenBSD: param.h,v 1.10 1997/02/14 18:01:59 kstailey Exp $ */ /* $NetBSD: param.h,v 1.34 1996/03/04 05:04:40 cgd Exp $ */ /* @@ -171,7 +171,6 @@ * have no need to check for any simulated interrupts, etc. */ -#define spl0() _spl(PSL_S|PSL_IPL0) #define spl1() _spl(PSL_S|PSL_IPL1) #define spl2() _spl(PSL_S|PSL_IPL2) #define spl3() _spl(PSL_S|PSL_IPL3) @@ -208,6 +207,9 @@ #define splhigh() spl7() #define splsched() spl7() +/* watch out for side effects */ +#define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) + /* Get current sr value (debug, etc.) */ extern int getsr __P((void)); diff --git a/sys/arch/sun3/sun3/locore.s b/sys/arch/sun3/sun3/locore.s index 3f81db4444e..9ab7e0845fb 100644 --- a/sys/arch/sun3/sun3/locore.s +++ b/sys/arch/sun3/sun3/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.11 1997/02/10 12:24:37 downsj Exp $ */ +/* $OpenBSD: locore.s,v 1.12 1997/02/14 18:01:58 kstailey Exp $ */ /* $NetBSD: locore.s,v 1.40 1996/11/06 20:19:54 cgd Exp $ */ /* @@ -1207,6 +1207,26 @@ ENTRY(getsr) movw sr, d0 rts +/* + * Set processor priority level calls. Most are implemented with + * inline asm expansions. However, spl0 requires special handling + * as we need to check for our emulated software interrupts. + */ + +ENTRY(spl0) + moveq #0,d0 + movw sr,d0 | get old SR for return + movw #PSL_LOWIPL,sr | restore new SR + tstb _ssir | software interrupt pending? + jeq Lspldone | no, all done + subql #4,sp | make room for RTE frame + movl sp@(4),sp@(2) | position return address + clrw sp@(6) | set frame type 0 + movw #PSL_LOWIPL,sp@ | and new SR + jra Lgotsir | go handle it +Lspldone: + rts + ENTRY(_insque) movw sr,d0 movw #PSL_HIGHIPL,sr | atomic |