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/* 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) | ||
*/ | ||
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.text | ||
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kernel_unaligned_trap_fault: | ||
call kernel_mna_trap_fault | ||
nop | ||
retl | ||
nop | ||
.size kern_unaligned_trap_fault, .-kern_unaligned_trap_fault | ||
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.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 | ||
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.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 | ||
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.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 | ||
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.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 |
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