diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1998-05-04 09:12:48 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 1998-05-04 09:12:48 +0000 |
| commit | 2e0f55e79c49509b7ff70ff1a10e1e9e90a3dfd4 (patch) | |
| tree | 9ff1a23dd500f1c70eb99fcd688d47d38abb0253 /include/asm-mips/stackframe.h | |
| parent | bbc6b4b59f51131f040a752cbe20a1805db08b0b (diff) | |
o New memset. Fastest in town for size > 6 bytes.
o New clear_user.
o Memcpy now efficiently copies the (src^dest)&3 != 0.
o Memmove new correctly deals with overlaps
o Rewrite csum_partial in assembler.
o Rewrte csum_partial_from_user in assembler.
o __copy_user is now integrated with memcpy.
o get_user now returns a zero value on error.
o copy_from_user now clears the destination buffer on error.
o strncpy_user now has a more efficient caller routine.
o strlen_user now has a more efficient caller routines and is faster.
o The unaligned handler is now much cleaner. It's now also save from
interrupt. Some more esotheric bugs fixed as well.
o Don't export bcopy anymore, it's now a inline function.
o Delete ancient junk from the first days of Linux/MIPS.
o Delete dead code in indy_sc.c.
o Including the IDE driver doesn't crash an Indy anymore.
o Eleminate active_ds. We now use current_ds directly in the thread
structure which is faster and threadsafe. Saves almost 2kb on the
kernel.
o Serial console should work again.
Diffstat (limited to 'include/asm-mips/stackframe.h')
| -rw-r--r-- | include/asm-mips/stackframe.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/include/asm-mips/stackframe.h b/include/asm-mips/stackframe.h index e925dcd50..726e82f23 100644 --- a/include/asm-mips/stackframe.h +++ b/include/asm-mips/stackframe.h @@ -3,7 +3,7 @@ * * Copyright (C) 1994, 1995, 1996 by Ralf Baechle and Paul M. Antoine. * - * $Id: stackframe.h,v 1.6 1998/03/26 07:39:21 ralf Exp $ + * $Id: stackframe.h,v 1.7 1998/04/28 19:39:15 ralf Exp $ */ #ifndef __ASM_MIPS_STACKFRAME_H #define __ASM_MIPS_STACKFRAME_H @@ -174,10 +174,6 @@ /* * Move to kernel mode and enable interrupts. * Set cp0 enable bit as sign that we're running on the kernel stack - * - * Note that the mtc0 will be effective on R4000 pipeline stage 7. This - * means that another three instructions will be executed with interrupts - * disabled. Arch/mips/mips3/r4xx0.S makes use of this fact. */ #define STI \ mfc0 t0,CP0_STATUS; \ @@ -186,4 +182,15 @@ xori t0,0x1e; \ mtc0 t0,CP0_STATUS +/* + * Just move to kernel mode and leave interrupts as they are. + * Set cp0 enable bit as sign that we're running on the kernel stack + */ +#define KMODE \ + mfc0 t0,CP0_STATUS; \ + li t1,ST0_CU0|0x1e; \ + or t0,t1; \ + xori t0,0x1e; \ + mtc0 t0,CP0_STATUS + #endif /* __ASM_MIPS_STACKFRAME_H */ |