diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/alpha/lib/strncpy.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/alpha/lib/strncpy.S | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/ANDROID_3.4.5/arch/alpha/lib/strncpy.S b/ANDROID_3.4.5/arch/alpha/lib/strncpy.S deleted file mode 100644 index a46f7f3a..00000000 --- a/ANDROID_3.4.5/arch/alpha/lib/strncpy.S +++ /dev/null @@ -1,81 +0,0 @@ -/* - * arch/alpha/lib/strncpy.S - * Contributed by Richard Henderson (rth@tamu.edu) - * - * Copy no more than COUNT bytes of the null-terminated string from - * SRC to DST. If SRC does not cover all of COUNT, the balance is - * zeroed. - * - * Or, rather, if the kernel cared about that weird ANSI quirk. This - * version has cropped that bit o' nastiness as well as assuming that - * __stxncpy is in range of a branch. - */ - - .set noat - .set noreorder - - .text - - .align 4 - .globl strncpy - .ent strncpy -strncpy: - .frame $30, 0, $26 - .prologue 0 - - mov $16, $0 # set return value now - beq $18, $zerolen - unop - bsr $23, __stxncpy # do the work of the copy - - unop - bne $18, $multiword # do we have full words left? - subq $24, 1, $3 # nope - subq $27, 1, $4 - - or $3, $24, $3 # clear the bits between the last - or $4, $27, $4 # written byte and the last byte in COUNT - andnot $3, $4, $4 - zap $1, $4, $1 - - stq_u $1, 0($16) - ret - - .align 4 -$multiword: - subq $27, 1, $2 # clear the final bits in the prev word - or $2, $27, $2 - zapnot $1, $2, $1 - subq $18, 1, $18 - - stq_u $1, 0($16) - addq $16, 8, $16 - unop - beq $18, 1f - - nop - unop - nop - blbc $18, 0f - - stq_u $31, 0($16) # zero one word - subq $18, 1, $18 - addq $16, 8, $16 - beq $18, 1f - -0: stq_u $31, 0($16) # zero two words - subq $18, 2, $18 - stq_u $31, 8($16) - addq $16, 16, $16 - bne $18, 0b - -1: ldq_u $1, 0($16) # clear the leading bits in the final word - subq $24, 1, $2 - or $2, $24, $2 - - zap $1, $2, $1 - stq_u $1, 0($16) -$zerolen: - ret - - .end strncpy |