diff options
| author | Greg Ungerer | 2011-10-14 07:41:56 +0200 |
|---|---|---|
| committer | Greg Ungerer | 2011-12-30 01:20:24 +0100 |
| commit | bbc6f1ba509cf9cda42ce63bbd40afe577ab028e (patch) | |
| tree | 281010e3d781b995e429efaacd7c99d0947c2bdf /arch/m68k/kernel | |
| parent | m68k: add ColdFire 54xx CPU MMU memory init code (diff) | |
| download | kernel-qcow2-linux-bbc6f1ba509cf9cda42ce63bbd40afe577ab028e.tar.gz kernel-qcow2-linux-bbc6f1ba509cf9cda42ce63bbd40afe577ab028e.tar.xz kernel-qcow2-linux-bbc6f1ba509cf9cda42ce63bbd40afe577ab028e.zip | |
m68k: set register a2 to current if MMU enabled on ColdFire
Virtual memory m68k systems build with register a2 dedicated to being the
current proc pointer (non-MMU don't do this). Add code to the ColdFire
interrupt and exception processing to set this on entry, and at context
switch time. We use the same GET_CURRENT() macro that MMU enabled code
uses - modifying it so that the assembler is ColdFire clean.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/kernel')
| -rw-r--r-- | arch/m68k/kernel/entry_no.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/m68k/kernel/entry_no.S b/arch/m68k/kernel/entry_no.S index ac86a9ffc1d7..d80cba45589f 100644 --- a/arch/m68k/kernel/entry_no.S +++ b/arch/m68k/kernel/entry_no.S @@ -44,6 +44,7 @@ ENTRY(buserr) SAVE_ALL_INT + GET_CURRENT(%d0) movel %sp,%sp@- /* stack frame pointer argument */ jsr buserr_c addql #4,%sp @@ -51,6 +52,7 @@ ENTRY(buserr) ENTRY(trap) SAVE_ALL_INT + GET_CURRENT(%d0) movel %sp,%sp@- /* stack frame pointer argument */ jsr trap_c addql #4,%sp @@ -61,6 +63,7 @@ ENTRY(trap) .globl dbginterrupt ENTRY(dbginterrupt) SAVE_ALL_INT + GET_CURRENT(%d0) movel %sp,%sp@- /* stack frame pointer argument */ jsr dbginterrupt_c addql #4,%sp |