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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-30 17:23:31 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-30 17:23:31 -0800 |
| commit | 6de71484cf9561edb45224f659a9db38b6056d5e (patch) | |
| tree | 588fe6f7c98147b805085503c863d371e2fa497e /arch/sparc/lib/strncmp_32.S | |
| parent | 1dff81f20cd55ffa5a8ee984da70ce0b99d29606 (diff) | |
| parent | e3c6d4ee545e427b55882d97d3b663c6411645fe (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: (98 commits)
sparc: move select of ARCH_SUPPORTS_MSI
sparc: drop SUN_IO
sparc: unify sections.h
sparc: use .data.init_task section for init_thread_union
sparc: fix array overrun check in of_device_64.c
sparc: unify module.c
sparc64: prepare module_64.c for unification
sparc64: use bit neutral Elf symbols
sparc: unify module.h
sparc: introduce CONFIG_BITS
sparc: fix hardirq.h removal fallout
sparc64: do not export pus_fs_struct
sparc: use sparc64 version of scatterlist.h
sparc: Commonize memcmp assembler.
sparc: Unify strlen assembler.
sparc: Add asm/asm.h
sparc: Kill memcmp_32.S code which has been ifdef'd out for centuries.
sparc: replace for_each_cpu_mask_nr with for_each_cpu
sparc: fix sparse warnings in irq_32.c
sparc: add include guards to kernel.h
...
Diffstat (limited to 'arch/sparc/lib/strncmp_32.S')
| -rw-r--r-- | arch/sparc/lib/strncmp_32.S | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/sparc/lib/strncmp_32.S b/arch/sparc/lib/strncmp_32.S new file mode 100644 index 00000000000..494ec664537 --- /dev/null +++ b/arch/sparc/lib/strncmp_32.S @@ -0,0 +1,118 @@ +/* + * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc + * generic strncmp routine. + */ + + .text + .align 4 + .global __strncmp, strncmp +__strncmp: +strncmp: + mov %o0, %g3 + mov 0, %o3 + + cmp %o2, 3 + ble 7f + mov 0, %g2 + + sra %o2, 2, %o4 + ldub [%g3], %o3 + +0: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be,a 1f + ldub [%g3], %o3 + + retl + sub %o0, %g2, %o0 + +1: + ldub [%o1], %g2 + add %g3,1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be,a 1f + ldub [%g3], %o3 + + retl + sub %o0, %g2, %o0 + +1: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be,a 1f + ldub [%g3], %o3 + + retl + sub %o0, %g2, %o0 + +1: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be 1f + add %o4, -1, %o4 + + retl + sub %o0, %g2, %o0 + +1: + + cmp %o4, 0 + bg,a 0b + ldub [%g3], %o3 + + b 7f + and %o2, 3, %o2 + +9: + ldub [%o1], %g2 + add %g3, 1, %g3 + and %o3, 0xff, %o0 + + cmp %o0, 0 + be 8f + add %o1, 1, %o1 + + cmp %o0, %g2 + be 7f + add %o2, -1, %o2 + +8: + retl + sub %o0, %g2, %o0 + +7: + cmp %o2, 0 + bg,a 9b + ldub [%g3], %o3 + + and %g2, 0xff, %o0 + retl + sub %o3, %o0, %o0 |