diff options
| author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
| commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
| tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/cris/arch-v32/lib/checksum.S | |
| parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
| download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip | |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/cris/arch-v32/lib/checksum.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/cris/arch-v32/lib/checksum.S | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/ANDROID_3.4.5/arch/cris/arch-v32/lib/checksum.S b/ANDROID_3.4.5/arch/cris/arch-v32/lib/checksum.S deleted file mode 100644 index 4a72a94a..00000000 --- a/ANDROID_3.4.5/arch/cris/arch-v32/lib/checksum.S +++ /dev/null @@ -1,88 +0,0 @@ -/* - * A fast checksum routine using movem - * Copyright (c) 1998-2007 Axis Communications AB - * - * csum_partial(const unsigned char * buff, int len, unsigned int sum) - */ - - .globl csum_partial - .type csum_partial,@function -csum_partial: - - ;; r10 - src - ;; r11 - length - ;; r12 - checksum - - ;; Optimized for large packets - subq 10*4, $r11 - blt _word_loop - move.d $r11, $acr - - subq 9*4,$sp - clearf c - movem $r8,[$sp] - - ;; do a movem checksum - -_mloop: movem [$r10+],$r9 ; read 10 longwords - ;; Loop count without touching the c flag. - addoq -10*4, $acr, $acr - ;; perform dword checksumming on the 10 longwords - - addc $r0,$r12 - addc $r1,$r12 - addc $r2,$r12 - addc $r3,$r12 - addc $r4,$r12 - addc $r5,$r12 - addc $r6,$r12 - addc $r7,$r12 - addc $r8,$r12 - addc $r9,$r12 - - ;; test $acr without trashing carry. - move.d $acr, $acr - bpl _mloop - ;; r11 <= acr is not really needed in the mloop, just using the dslot - ;; to prepare for what is needed after mloop. - move.d $acr, $r11 - - ;; fold the last carry into r13 - addc 0, $r12 - movem [$sp+],$r8 ; restore regs - -_word_loop: - addq 10*4,$r11 ; compensate for last loop underflowing length - - moveq -1,$r9 ; put 0xffff in r9, faster than move.d 0xffff,r9 - lsrq 16,$r9 - - move.d $r12,$r13 - lsrq 16,$r13 ; r13 = checksum >> 16 - and.d $r9,$r12 ; checksum = checksum & 0xffff - -_no_fold: - subq 2,$r11 - blt _no_words - add.d $r13,$r12 ; checksum += r13 - - ;; checksum the rest of the words -_wloop: subq 2,$r11 - bge _wloop - addu.w [$r10+],$r12 - -_no_words: - addq 2,$r11 - ;; see if we have one odd byte more - bne _do_byte - nop - ret - move.d $r12,$r10 - -_do_byte: - ;; copy and checksum the last byte - addu.b [$r10],$r12 - ret - move.d $r12,$r10 - - .size csum_partial, .-csum_partial |