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Diffstat (limited to 'arch/sparc64/kernel/una_asm.S')
-rw-r--r-- | arch/sparc64/kernel/una_asm.S | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/una_asm.S b/arch/sparc64/kernel/una_asm.S new file mode 100644 index 00000000000..cbb40585253 --- /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 |