diff options
Diffstat (limited to 'arch/m68k/platform/coldfire/entry.S')
| -rw-r--r-- | arch/m68k/platform/coldfire/entry.S | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/m68k/platform/coldfire/entry.S b/arch/m68k/platform/coldfire/entry.S index 27c2b00..3157461 100644 --- a/arch/m68k/platform/coldfire/entry.S +++ b/arch/m68k/platform/coldfire/entry.S @@ -61,7 +61,7 @@ enosys: bra 1f ENTRY(system_call) - SAVE_ALL + SAVE_ALL_SYS move #0x2000,%sr /* enable intrs again */ cmpl #NR_syscalls,%d0 @@ -165,9 +165,7 @@ Lsignal_return: * sources). Calls up to high level code to do all the work. */ ENTRY(inthandler) - SAVE_ALL - moveq #-1,%d0 - movel %d0,%sp@(PT_OFF_ORIG_D0) + SAVE_ALL_INT movew %sp@(PT_OFF_FORMATVEC),%d0 /* put exception # in d0 */ andl #0x03fc,%d0 /* mask out vector only */ @@ -182,21 +180,23 @@ ENTRY(inthandler) /* * Beware - when entering resume, prev (the current task) is - * in a0, next (the new task) is in a1,so don't change these + * in a0, next (the new task) is in a1, so don't change these * registers until their contents are no longer needed. - * This is always called in supervisor mode, so don't bother to save - * and restore sr; user's process sr is actually in the stack. */ ENTRY(resume) - movel %a0, %d1 /* get prev thread in d1 */ - RDUSP - movel %a2,%a0@(TASK_THREAD+THREAD_USP) - + movew %sr,%d1 /* save current status */ + movew %d1,%a0@(TASK_THREAD+THREAD_SR) + movel %a0,%d1 /* get prev thread in d1 */ SAVE_SWITCH_STACK movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack pointer */ - movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new thread stack */ + RDUSP /* movel %usp,%a3 */ + movel %a3,%a0@(TASK_THREAD+THREAD_USP) /* save thread user stack */ + + movel %a1@(TASK_THREAD+THREAD_USP),%a3 /* restore thread user stack */ + WRUSP /* movel %a3,%usp */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new kernel stack */ + movew %a1@(TASK_THREAD+THREAD_SR),%d7 /* restore new status */ + movew %d7,%sr RESTORE_SWITCH_STACK - - movel %a1@(TASK_THREAD+THREAD_USP),%a0 /* restore thread user stack */ - WRUSP rts + |