1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
119 lines
1.3 KiB
ArmAsm
119 lines
1.3 KiB
ArmAsm
/* $Id: strncmp.S,v 1.2 1996/09/09 02:47:20 davem Exp $
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* strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
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* generic strncmp routine.
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*/
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.text
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.align 4
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.global __strncmp, strncmp
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__strncmp:
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strncmp:
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mov %o0, %g3
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mov 0, %o3
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cmp %o2, 3
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ble 7f
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mov 0, %g2
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sra %o2, 2, %o4
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ldub [%g3], %o3
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0:
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ldub [%o1], %g2
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add %g3, 1, %g3
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and %o3, 0xff, %o0
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cmp %o0, 0
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be 8f
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add %o1, 1, %o1
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cmp %o0, %g2
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be,a 1f
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ldub [%g3], %o3
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retl
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sub %o0, %g2, %o0
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1:
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ldub [%o1], %g2
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add %g3,1, %g3
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and %o3, 0xff, %o0
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cmp %o0, 0
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be 8f
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add %o1, 1, %o1
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cmp %o0, %g2
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be,a 1f
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ldub [%g3], %o3
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retl
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sub %o0, %g2, %o0
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1:
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ldub [%o1], %g2
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add %g3, 1, %g3
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and %o3, 0xff, %o0
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cmp %o0, 0
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be 8f
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add %o1, 1, %o1
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cmp %o0, %g2
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be,a 1f
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ldub [%g3], %o3
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retl
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sub %o0, %g2, %o0
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1:
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ldub [%o1], %g2
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add %g3, 1, %g3
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and %o3, 0xff, %o0
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cmp %o0, 0
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be 8f
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add %o1, 1, %o1
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cmp %o0, %g2
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be 1f
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add %o4, -1, %o4
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retl
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sub %o0, %g2, %o0
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1:
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cmp %o4, 0
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bg,a 0b
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ldub [%g3], %o3
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b 7f
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and %o2, 3, %o2
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9:
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ldub [%o1], %g2
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add %g3, 1, %g3
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and %o3, 0xff, %o0
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cmp %o0, 0
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be 8f
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add %o1, 1, %o1
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cmp %o0, %g2
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be 7f
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add %o2, -1, %o2
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8:
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retl
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sub %o0, %g2, %o0
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7:
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cmp %o2, 0
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bg,a 9b
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ldub [%g3], %o3
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and %g2, 0xff, %o0
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retl
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sub %o3, %o0, %o0
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