diff options
Diffstat (limited to 'arch/m68k/platform/coldfire/entry.S')
| -rw-r--r-- | arch/m68k/platform/coldfire/entry.S | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/arch/m68k/platform/coldfire/entry.S b/arch/m68k/platform/coldfire/entry.S index 27c2b001161..881ab8e379d 100644 --- a/arch/m68k/platform/coldfire/entry.S +++ b/arch/m68k/platform/coldfire/entry.S @@ -54,15 +54,15 @@ sw_usp: .globl ret_from_signal .globl sys_call_table .globl inthandler -.globl fasthandler enosys: mov.l #sys_ni_syscall,%d3 bra 1f ENTRY(system_call) - SAVE_ALL + SAVE_ALL_SYS move #0x2000,%sr /* enable intrs again */ + GET_CURRENT(%d2) cmpl #NR_syscalls,%d0 jcc enosys @@ -136,7 +136,7 @@ Luser_return: movel %sp,%d1 /* get thread_info pointer */ andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ movel %d1,%a0 - movel %a0@(TINFO_FLAGS),%d1 /* get thread_info->flags */ + moveb %a0@(TINFO_FLAGS+3),%d1 /* thread_info->flags (low 8 bits) */ jne Lwork_to_do /* still work to do */ Lreturn: @@ -148,13 +148,11 @@ Lwork_to_do: btst #TIF_NEED_RESCHED,%d1 jne reschedule - /* GERG: do we need something here for TRACEing?? */ - Lsignal_return: subql #4,%sp /* dummy return address */ SAVE_SWITCH_STACK pea %sp@(SWITCH_STACK_SIZE) - jsr do_signal + jsr do_notify_resume addql #4,%sp RESTORE_SWITCH_STACK addql #4,%sp @@ -165,9 +163,8 @@ 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 + GET_CURRENT(%d2) movew %sp@(PT_OFF_FORMATVEC),%d0 /* put exception # in d0 */ andl #0x03fc,%d0 /* mask out vector only */ @@ -182,21 +179,25 @@ 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 */ +#ifdef CONFIG_MMU + movel %a1,%a2 /* set new current */ +#endif + 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 + |