[SPARC64]: Move kernel unaligned trap handlers into assembler file.
GCC 4.x really dislikes the games we are playing in
unaligned.c, and the cleanest way to fix this is to
move things into assembler.
Noted by Al Viro.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/una_asm.S b/arch/sparc64/kernel/una_asm.S
new file mode 100644
index 0000000..cbb4058
--- /dev/null
+++ b/arch/sparc64/kernel/una_asm.S
@@ -0,0 +1,153 @@
+/* una_asm.S: Kernel unaligned trap assembler helpers.
+ *
+ * Copyright (C) 1996,2005 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+ .text
+
+kernel_unaligned_trap_fault:
+ call kernel_mna_trap_fault
+ nop
+ retl
+ nop
+ .size kern_unaligned_trap_fault, .-kern_unaligned_trap_fault
+
+ .globl __do_int_store
+__do_int_store:
+ rd %asi, %o4
+ wr %o3, 0, %asi
+ ldx [%o2], %g3
+ cmp %o1, 2
+ be,pn %icc, 2f
+ cmp %o1, 4
+ be,pt %icc, 1f
+ srlx %g3, 24, %g2
+ srlx %g3, 56, %g1
+ srlx %g3, 48, %g7
+4: stba %g1, [%o0] %asi
+ srlx %g3, 40, %g1
+5: stba %g7, [%o0 + 1] %asi
+ srlx %g3, 32, %g7
+6: stba %g1, [%o0 + 2] %asi
+7: stba %g7, [%o0 + 3] %asi
+ srlx %g3, 16, %g1
+8: stba %g2, [%o0 + 4] %asi
+ srlx %g3, 8, %g7
+9: stba %g1, [%o0 + 5] %asi
+10: stba %g7, [%o0 + 6] %asi
+ ba,pt %xcc, 0f
+11: stba %g3, [%o0 + 7] %asi
+1: srl %g3, 16, %g7
+12: stba %g2, [%o0] %asi
+ srl %g3, 8, %g2
+13: stba %g7, [%o0 + 1] %asi
+14: stba %g2, [%o0 + 2] %asi
+ ba,pt %xcc, 0f
+15: stba %g3, [%o0 + 3] %asi
+2: srl %g3, 8, %g2
+16: stba %g2, [%o0] %asi
+17: stba %g3, [%o0 + 1] %asi
+0:
+ wr %o4, 0x0, %asi
+ retl
+ nop
+ .size __do_int_store, .-__do_int_store
+
+ .section __ex_table
+ .word 4b, kernel_unaligned_trap_fault
+ .word 5b, kernel_unaligned_trap_fault
+ .word 6b, kernel_unaligned_trap_fault
+ .word 7b, kernel_unaligned_trap_fault
+ .word 8b, kernel_unaligned_trap_fault
+ .word 9b, kernel_unaligned_trap_fault
+ .word 10b, kernel_unaligned_trap_fault
+ .word 11b, kernel_unaligned_trap_fault
+ .word 12b, kernel_unaligned_trap_fault
+ .word 13b, kernel_unaligned_trap_fault
+ .word 14b, kernel_unaligned_trap_fault
+ .word 15b, kernel_unaligned_trap_fault
+ .word 16b, kernel_unaligned_trap_fault
+ .word 17b, kernel_unaligned_trap_fault
+ .previous
+
+ .globl do_int_load
+do_int_load:
+ rd %asi, %o5
+ wr %o4, 0, %asi
+ cmp %o1, 8
+ bge,pn %icc, 9f
+ cmp %o1, 4
+ be,pt %icc, 6f
+4: lduba [%o2] %asi, %g2
+5: lduba [%o2 + 1] %asi, %g3
+ sll %g2, 8, %g2
+ brz,pt %o3, 3f
+ add %g2, %g3, %g2
+ sllx %g2, 48, %g2
+ srax %g2, 48, %g2
+3: ba,pt %xcc, 0f
+ stx %g2, [%o0]
+6: lduba [%o2 + 1] %asi, %g3
+ sll %g2, 24, %g2
+7: lduba [%o2 + 2] %asi, %g7
+ sll %g3, 16, %g3
+8: lduba [%o2 + 3] %asi, %g1
+ sll %g7, 8, %g7
+ or %g2, %g3, %g2
+ or %g7, %g1, %g7
+ or %g2, %g7, %g2
+ brnz,a,pt %o3, 3f
+ sra %g2, 0, %g2
+3: ba,pt %xcc, 0f
+ stx %g2, [%o0]
+9: lduba [%o2] %asi, %g2
+10: lduba [%o2 + 1] %asi, %g3
+ sllx %g2, 56, %g2
+11: lduba [%o2 + 2] %asi, %g7
+ sllx %g3, 48, %g3
+12: lduba [%o2 + 3] %asi, %g1
+ sllx %g7, 40, %g7
+ sllx %g1, 32, %g1
+ or %g2, %g3, %g2
+ or %g7, %g1, %g7
+13: lduba [%o2 + 4] %asi, %g3
+ or %g2, %g7, %g7
+14: lduba [%o2 + 5] %asi, %g1
+ sllx %g3, 24, %g3
+15: lduba [%o2 + 6] %asi, %g2
+ sllx %g1, 16, %g1
+ or %g7, %g3, %g7
+16: lduba [%o2 + 7] %asi, %g3
+ sllx %g2, 8, %g2
+ or %g7, %g1, %g7
+ or %g2, %g3, %g2
+ or %g7, %g2, %g7
+ cmp %o1, 8
+ be,a,pt %icc, 0f
+ stx %g7, [%o0]
+ srlx %g7, 32, %g2
+ sra %g7, 0, %g7
+ stx %g2, [%o0]
+ stx %g7, [%o0 + 8]
+0:
+ wr %o5, 0x0, %asi
+ retl
+ nop
+ .size __do_int_load, .-__do_int_load
+
+ .section __ex_table
+ .word 4b, kernel_unaligned_trap_fault
+ .word 5b, kernel_unaligned_trap_fault
+ .word 6b, kernel_unaligned_trap_fault
+ .word 7b, kernel_unaligned_trap_fault
+ .word 8b, kernel_unaligned_trap_fault
+ .word 9b, kernel_unaligned_trap_fault
+ .word 10b, kernel_unaligned_trap_fault
+ .word 11b, kernel_unaligned_trap_fault
+ .word 12b, kernel_unaligned_trap_fault
+ .word 13b, kernel_unaligned_trap_fault
+ .word 14b, kernel_unaligned_trap_fault
+ .word 15b, kernel_unaligned_trap_fault
+ .word 16b, kernel_unaligned_trap_fault
+ .previous