Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / misc_32.S

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 8b642ab26d3767c23205125b1022dcad45964efd..89aaaa6f3561549c896fcd9983a04e96cba72410 100644 (file)
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -32,6 +32,31 @@
 
        .text
 
+#ifdef CONFIG_IRQSTACKS
+_GLOBAL(call_do_softirq)
+       mflr    r0
+       stw     r0,4(r1)
+       stwu    r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r3)
+       mr      r1,r3
+       bl      __do_softirq
+       lwz     r1,0(r1)
+       lwz     r0,4(r1)
+       mtlr    r0
+       blr
+
+_GLOBAL(call_handle_irq)
+       mflr    r0
+       stw     r0,4(r1)
+       mtctr   r6
+       stwu    r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r5)
+       mr      r1,r5
+       bctrl
+       lwz     r1,0(r1)
+       lwz     r0,4(r1)
+       mtlr    r0
+       blr
+#endif /* CONFIG_IRQSTACKS */
+
 /*
  * This returns the high 64 bits of the product of two 64-bit numbers.
  */
@@ -152,7 +177,7 @@ _GLOBAL(low_choose_750fx_pll)
        mtspr   SPRN_HID1,r4
 
        /* Store new HID1 image */
-       rlwinm  r6,r1,0,0,18
+       rlwinm  r6,r1,0,0,(31-THREAD_SHIFT)
        lwz     r6,TI_CPU(r6)
        slwi    r6,r6,2
        addis   r6,r6,nap_save_hid1@ha
@@ -206,6 +231,45 @@ _GLOBAL(_nmask_and_or_msr)
        isync
        blr                     /* Done */
 
+#ifdef CONFIG_40x
+
+/*
+ * Do an IO access in real mode
+ */
+_GLOBAL(real_readb)
+       mfmsr   r7
+       ori     r0,r7,MSR_DR
+       xori    r0,r0,MSR_DR
+       sync
+       mtmsr   r0
+       sync
+       isync
+       lbz     r3,0(r3)
+       sync
+       mtmsr   r7
+       sync
+       isync
+       blr
+
+       /*
+ * Do an IO access in real mode
+ */
+_GLOBAL(real_writeb)
+       mfmsr   r7
+       ori     r0,r7,MSR_DR
+       xori    r0,r0,MSR_DR
+       sync
+       mtmsr   r0
+       sync
+       isync
+       stb     r3,0(r4)
+       sync
+       mtmsr   r7
+       sync
+       isync
+       blr
+
+#endif /* CONFIG_40x */
 
 /*
  * Flush MMU TLB
@@ -236,19 +300,13 @@ _GLOBAL(_tlbia)
        /* Invalidate all entries in TLB1 */
        li      r3, 0x0c
        tlbivax 0,3
-       /* Invalidate all entries in TLB2 */
-       li      r3, 0x14
-       tlbivax 0,3
-       /* Invalidate all entries in TLB3 */
-       li      r3, 0x1c
-       tlbivax 0,3
        msync
 #ifdef CONFIG_SMP
        tlbsync
 #endif /* CONFIG_SMP */
 #else /* !(CONFIG_40x || CONFIG_44x || CONFIG_FSL_BOOKE) */
 #if defined(CONFIG_SMP)
-       rlwinm  r8,r1,0,0,18
+       rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
        lwz     r8,TI_CPU(r8)
        oris    r8,r8,10
        mfmsr   r10
@@ -336,19 +394,15 @@ _GLOBAL(_tlbie)
 #elif defined(CONFIG_FSL_BOOKE)
        rlwinm  r4, r3, 0, 0, 19
        ori     r5, r4, 0x08    /* TLBSEL = 1 */
-       ori     r6, r4, 0x10    /* TLBSEL = 2 */
-       ori     r7, r4, 0x18    /* TLBSEL = 3 */
        tlbivax 0, r4
        tlbivax 0, r5
-       tlbivax 0, r6
-       tlbivax 0, r7
        msync
 #if defined(CONFIG_SMP)
        tlbsync
 #endif /* CONFIG_SMP */
 #else /* !(CONFIG_40x || CONFIG_44x || CONFIG_FSL_BOOKE) */
 #if defined(CONFIG_SMP)
-       rlwinm  r8,r1,0,0,18
+       rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
        lwz     r8,TI_CPU(r8)
        oris    r8,r8,11
        mfmsr   r10
@@ -756,6 +810,21 @@ _GLOBAL(__lshrdi3)
        or      r4,r4,r7        # LSW |= t2
        blr
 
+/*
+ * 64-bit comparison: __ucmpdi2(u64 a, u64 b)
+ * Returns 0 if a < b, 1 if a == b, 2 if a > b.
+ */
+_GLOBAL(__ucmpdi2)
+       cmplw   r3,r5
+       li      r3,1
+       bne     1f
+       cmplw   r4,r6
+       beqlr
+1:     li      r3,0
+       bltlr
+       li      r3,2
+       blr
+
 _GLOBAL(abs)
        srawi   r4,r3,31
        xor     r3,r3,r4
@@ -793,13 +862,6 @@ _GLOBAL(kernel_thread)
        addi    r1,r1,16
        blr
 
-_GLOBAL(kernel_execve)
-       li      r0,__NR_execve
-       sc
-       bnslr
-       neg     r3,r3
-       blr
-
 /*
  * This routine is just here to keep GCC happy - sigh...
  */