fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / mips / kernel / entry.S

diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index a9c6de1..f10b6a1 100644 (file)
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -7,7 +7,6 @@
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
  * Copyright (C) 2001 MIPS Technologies, Inc.
  */
-#include <linux/config.h>
 
 #include <asm/asm.h>
 #include <asm/asmmacro.h>
@@ -21,10 +20,7 @@
 #include <asm/mipsmtregs.h>
 #endif
 
-#ifdef CONFIG_PREEMPT
-       .macro  preempt_stop
-       .endm
-#else
+#ifndef CONFIG_PREEMPT
        .macro  preempt_stop
        local_irq_disable
        .endm
@@ -33,9 +29,16 @@
 
        .text
        .align  5
+FEXPORT(ret_from_irq)
+       LONG_S  s0, TI_REGS($28)
+#ifdef CONFIG_PREEMPT
+FEXPORT(ret_from_exception)
+#else
+       b       _ret_from_irq
 FEXPORT(ret_from_exception)
        preempt_stop
-FEXPORT(ret_from_irq)
+#endif
+FEXPORT(_ret_from_irq)
        LONG_L  t0, PT_STATUS(sp)               # returning to kernel mode?
        andi    t0, t0, KU_USER
        beqz    t0, resume_kernel
@@ -66,7 +69,7 @@ need_resched:
 #endif
 
 FEXPORT(ret_from_fork)
-       jal     schedule_tail           # a0 = task_t *prev
+       jal     schedule_tail           # a0 = struct task_struct *prev
 
 FEXPORT(syscall_exit)
        local_irq_disable               # make sure need_resched and
@@ -80,14 +83,16 @@ FEXPORT(syscall_exit)
 FEXPORT(restore_all)                   # restore full frame
 #ifdef CONFIG_MIPS_MT_SMTC
 /* Detect and execute deferred IPI "interrupts" */
-       move    a0,sp
+       LONG_L  s0, TI_REGS($28)
+       LONG_S  sp, TI_REGS($28)
        jal     deferred_smtc_ipi
+       LONG_S  s0, TI_REGS($28)
 /* Re-arm any temporarily masked interrupts not explicitly "acked" */
        mfc0    v0, CP0_TCSTATUS
        ori     v1, v0, TCSTATUS_IXMT
        mtc0    v1, CP0_TCSTATUS
        andi    v0, TCSTATUS_IXMT
-       ehb
+       _ehb
        mfc0    t0, CP0_TCCONTEXT
        DMT     9                               # dmt t1
        jal     mips_ihb
@@ -95,7 +100,7 @@ FEXPORT(restore_all)                 # restore full frame
        andi    t3, t0, 0xff00
        or      t2, t2, t3
        mtc0    t2, CP0_STATUS
-       ehb
+       _ehb
        andi    t1, t1, VPECONTROL_TE
        beqz    t1, 1f
        EMT
@@ -105,7 +110,7 @@ FEXPORT(restore_all)                        # restore full frame
        xori    v1, v1, TCSTATUS_IXMT
        or      v1, v0, v1
        mtc0    v1, CP0_TCSTATUS
-       ehb
+       _ehb
        xor     t0, t0, t3
        mtc0    t0, CP0_TCCONTEXT
 #endif /* CONFIG_MIPS_MT_SMTC */
@@ -114,6 +119,21 @@ FEXPORT(restore_all)                       # restore full frame
        RESTORE_AT
        RESTORE_STATIC
 FEXPORT(restore_partial)               # restore partial frame
+#ifdef CONFIG_TRACE_IRQFLAGS
+       SAVE_STATIC
+       SAVE_AT
+       SAVE_TEMP
+       LONG_L  v0, PT_STATUS(sp)
+       and     v0, 1
+       beqz    v0, 1f
+       jal     trace_hardirqs_on
+       b       2f
+1:     jal     trace_hardirqs_off
+2:
+       RESTORE_TEMP
+       RESTORE_AT
+       RESTORE_STATIC
+#endif
        RESTORE_SOME
        RESTORE_SP_AND_RET
        .set    at