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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/alpha/lib/ev67-strcat.S | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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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/alpha/lib/ev67-strcat.S')
-rw-r--r-- | ANDROID_3.4.5/arch/alpha/lib/ev67-strcat.S | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/ANDROID_3.4.5/arch/alpha/lib/ev67-strcat.S b/ANDROID_3.4.5/arch/alpha/lib/ev67-strcat.S deleted file mode 100644 index c426fe3e..00000000 --- a/ANDROID_3.4.5/arch/alpha/lib/ev67-strcat.S +++ /dev/null @@ -1,54 +0,0 @@ -/* - * arch/alpha/lib/ev67-strcat.S - * 21264 version contributed by Rick Gorton <rick.gorton@alpha-processor.com> - * - * Append a null-terminated string from SRC to DST. - * - * Much of the information about 21264 scheduling/coding comes from: - * Compiler Writer's Guide for the Alpha 21264 - * abbreviated as 'CWG' in other comments here - * ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html - * Scheduling notation: - * E - either cluster - * U - upper subcluster; U0 - subcluster U0; U1 - subcluster U1 - * L - lower subcluster; L0 - subcluster L0; L1 - subcluster L1 - * Try not to change the actual algorithm if possible for consistency. - * Commentary: It seems bogus to walk the input string twice - once - * to determine the length, and then again while doing the copy. - * A significant (future) enhancement would be to only read the input - * string once. - */ - - - .text - - .align 4 - .globl strcat - .ent strcat -strcat: - .frame $30, 0, $26 - .prologue 0 - - mov $16, $0 # E : set up return value - /* Find the end of the string. */ - ldq_u $1, 0($16) # L : load first quadword (a0 may be misaligned) - lda $2, -1 # E : - insqh $2, $16, $2 # U : - - andnot $16, 7, $16 # E : - or $2, $1, $1 # E : - cmpbge $31, $1, $2 # E : bits set iff byte == 0 - bne $2, $found # U : - -$loop: ldq $1, 8($16) # L : - addq $16, 8, $16 # E : - cmpbge $31, $1, $2 # E : - beq $2, $loop # U : - -$found: cttz $2, $3 # U0 : - addq $16, $3, $16 # E : - /* Now do the append. */ - mov $26, $23 # E : - br __stxcpy # L0 : - - .end strcat |