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m68k: merge mmu and non-mmu include/asm/entry.h files

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The changes in the mmu version of entry.h (entry_mm.h) and the non-mmu
version (entry_no.h) are not about the presence or use of an MMU at all.
The main changes are to support the ColdFire processors. The code for
trap entry and exit for all types of 68k processor outside coldfire is
the same.

So merge the files back to a single entry.h and share the common 68k
entry/exit code. Some changes are required for the non-mmu entry
handlers to adopt the differing macros for system call and interrupt
entry, but this is quite strait forward. The changes for the ColdFire
remove a couple of instructions for the separate a7 register case, and
are no worse for the older single a7 register case.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Greg Ungerer
2011-06-22 13:50:44 +10:00
parent 0a01b310fe
commit 61619b1207
7 changed files with 269 additions and 331 deletions
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6
arch/m68k/kernel/entry_no.S
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@@ -43,7 +43,7 @@
.globl sys_vfork
ENTRY(buserr)
SAVE_ALL
SAVE_ALL_INT
moveq #-1,%d0
movel %d0,%sp@(PT_OFF_ORIG_D0)
movel %sp,%sp@- /* stack frame pointer argument */
@@ -52,7 +52,7 @@ ENTRY(buserr)
jra ret_from_exception
ENTRY(trap)
SAVE_ALL
SAVE_ALL_INT
moveq #-1,%d0
movel %d0,%sp@(PT_OFF_ORIG_D0)
movel %sp,%sp@- /* stack frame pointer argument */
@@ -64,7 +64,7 @@ ENTRY(trap)
.globl dbginterrupt
ENTRY(dbginterrupt)
SAVE_ALL
SAVE_ALL_INT
moveq #-1,%d0
movel %d0,%sp@(PT_OFF_ORIG_D0)
movel %sp,%sp@- /* stack frame pointer argument */