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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "go_asm.h"
#include "textflag.h"
TEXT ·Count<ABIInternal>(SB),NOSPLIT,$0-40
// X10 = b_base
// X11 = b_len
// X12 = b_cap (unused)
// X13 = byte to count (want in X12)
AND $0xff, X13, X12
MOV ZERO, X14 // count
ADD X10, X11 // end
loop:
BEQ X10, X11, done
MOVBU (X10), X15
ADD $1, X10
BNE X12, X15, loop
ADD $1, X14
JMP loop
done:
MOV X14, X10
RET
TEXT ·CountString<ABIInternal>(SB),NOSPLIT,$0-32
// X10 = s_base
// X11 = s_len
// X12 = byte to count
AND $0xff, X12
MOV ZERO, X14 // count
ADD X10, X11 // end
loop:
BEQ X10, X11, done
MOVBU (X10), X15
ADD $1, X10
BNE X12, X15, loop
ADD $1, X14
JMP loop
done:
MOV X14, X10
RET
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