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; Copyright (C) 2012-2014 Free Software Foundation, Inc.
; Contributed by Red Hat.
;
; This file is free software; you can redistribute it and/or modify it
; under the terms of the GNU General Public License as published by the
; Free Software Foundation; either version 3, or (at your option) any
; later version.
;
; This file is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
; General Public License for more details.
;
; Under Section 7 of GPL version 3, you are granted additional
; permissions described in the GCC Runtime Library Exception, version
; 3.1, as published by the Free Software Foundation.
;
; You should have received a copy of the GNU General Public License and
; a copy of the GCC Runtime Library Exception along with this program;
; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
; <http://www.gnu.org/licenses/>.
#include "vregs.h"
START_FUNC ___clzhi2
;; Argument is in [SP+4], return in R8.
movw ax, [SP+4]
.global __clzhi2_internal
__clzhi2_internal:
movw r8, #16
cmpw ax, #0
bz $clzhi2_is_zero
mov e, #0xff
1:
inc e
shlw ax, 1
bnc $1b
mov a, e
mov r8, a
clzhi2_is_zero:
ret
END_FUNC ___clzhi2
START_FUNC ___clzsi2
;; Argument is in [SP+6]:[SP+4], return in R8.
movw ax, [SP+6]
cmpw ax, #0
bnz $__clzhi2_internal
movw ax, [SP+4]
call !__clzhi2_internal
movw ax, r8
addw ax, #16
movw r8, ax
ret
END_FUNC ___clzsi2
START_FUNC ___ctzhi2
;; Argument is in [SP+4], return in R8.
movw ax, [SP+4]
.global __ctzhi2_internal
__ctzhi2_internal:
movw r8, #16
cmpw ax, #0
bz $ctzhi2_is_zero
mov e, #0xff
1:
inc e
shrw ax, 1
bnc $1b
mov a, e
mov r8, a
ctzhi2_is_zero:
ret
END_FUNC ___ctzhi2
START_FUNC ___ctzsi2
;; Argument is in [SP+6]:[SP+4], return in R8.
movw ax, [SP+4]
cmpw ax, #0
bnz $__ctzhi2_internal
movw ax, [SP+6]
call !__ctzhi2_internal
movw ax, r8
addw ax, #16
movw r8, ax
ret
END_FUNC ___ctzsi2
START_FUNC ___ffshi2
;; Argument is in [SP+4], return in R8.
movw ax, [SP+4]
.global __ffshi2_internal
__ffshi2_internal:
movw r8, #0
cmpw ax, #0
bz $ffshi2_is_zero
mov e, #0
1:
inc e
shrw ax, 1
bnc $1b
mov a, e
mov r8, a
ffshi2_is_zero:
ret
END_FUNC ___ffshi2
START_FUNC ___ffssi2
;; Argument is in [SP+6]:[SP+4], return in R8.
movw ax, [SP+4]
cmpw ax, #0
bnz $__ffshi2_internal
movw ax, [SP+6]
cmpw ax, #0
bz $1f
call !__ffshi2_internal
movw ax, r8
addw ax, #16
1:
movw r8, ax
ret
END_FUNC ___ffssi2
START_FUNC ___parityqi_internal
mov1 cy, a.0
xor1 cy, a.1
xor1 cy, a.2
xor1 cy, a.3
xor1 cy, a.4
xor1 cy, a.5
xor1 cy, a.6
xor1 cy, a.7
movw ax, #0
bnc $1f
incw ax
1:
movw r8, ax
ret
END_FUNC ___parityqi_internal
START_FUNC ___parityhi2
;; Argument is in [SP+4], return in R8.
movw ax, [SP+4]
xor a, x
br $___parityqi_internal
END_FUNC ___parityhi2
START_FUNC ___paritysi2
;; Argument is in [SP+6]:[SP+4], return in R8.
movw ax, [SP+4]
xor a, x
mov b, a
movw ax, [SP+6]
xor a, x
xor a, b
br $___parityqi_internal
END_FUNC ___paritysi2
START_FUNC ___popcounthi2
;; Argument is in [SP+4], return in R8.
mov d, #2
br $___popcountqi_internal
END_FUNC ___popcounthi2
START_FUNC ___popcountsi2
;; Argument is in [SP+6]:[SP+4], return in R8.
mov d, #4
br $___popcountqi_internal
END_FUNC ___popcountsi2
START_FUNC ___popcountqi_internal
;; There are D bytes starting at [HL]
;; store count in R8.
movw ax, sp
addw ax, #4
movw hl, ax
mov a, #0
1:
xch a, b
mov a, [hl]
xch a, b
mov e, #8
2:
shl b,1
addc a, #0
dec e
bnz $2b
incw hl
dec d
bnz $1b
mov x, a
mov a, #0
movw r8, ax
ret
END_FUNC ___popcountqi_internal
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