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#include "macros.inc"
#define src_hi r25
#define src_lo r24
; #define val_hi r23
#define val_lo r22
#define ret_hi r25
#define ret_lo r24
; char *strrchr(const char *src, int val)
.text
.global _U(strrchr)
.type _U(strrchr), @function
_U(strrchr):
LOAD_Z(src_lo, src_hi)
ldi ret_lo, lo8(1) ; NULL + 1
ldi ret_hi, hi8(1)
.strrchr_loop:
ld __tmp_reg__, Z+
cp __tmp_reg__, val_lo
brne .strrchr_noteq
mov ret_lo, ZL ; XXX use movw if available
mov ret_hi, ZH ; remember this character was here
.strrchr_noteq:
tst __tmp_reg__
brne .strrchr_loop
sbiw ret_lo, 1 ; undo post-increment
ret
.strrchr_end:
.size _U(strrchr), .strrchr_end - _U(strrchr)
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