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; Copyright (C) 2012-2024 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/>.
.text
.section .text.__mspabi_srli_n
.macro _srli n
.global __mspabi_srli_\n
__mspabi_srli_\n:
CLRC
RRC.W R12
.endm
/* Logical Right Shift - R12 -> R12. */
_srli 15
_srli 14
_srli 13
_srli 12
_srli 11
_srli 10
_srli 9
_srli 8
_srli 7
_srli 6
_srli 5
_srli 4
_srli 3
_srli 2
_srli 1
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
.section .text.__mspabi_srli
1: ADD.W #-1,R13
CLRC
RRC.W R12,R12
.global __mspabi_srli
__mspabi_srli:
CMP #0,R13
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
#ifdef __MSP430X__
.section .text.__gnu_mspabi_srlp
1: ADDA #-1,R13
CLRC
RRCX.A R12,R12
.global __gnu_mspabi_srlp
__gnu_mspabi_srlp:
CMP #0,R13
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif /* __MSP430X_LARGE__ */
#endif /* __MSP430X__ */
/* Logical Right Shift - R12:R13 -> R12:R13. */
.section .text.__mspabi_srll_n
.macro _srll n
.global __mspabi_srll_\n
__mspabi_srll_\n:
CLRC
RRC.W R13
RRC.W R12
.endm
_srll 15
_srll 14
_srll 13
_srll 12
_srll 11
_srll 10
_srll 9
_srll 8
_srll 7
_srll 6
_srll 5
_srll 4
_srll 3
_srll 2
_srll 1
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
.section .text.__mspabi_srll
1: ADD.W #-1,R14
CLRC
RRC.W R13
RRC.W R12
.global __mspabi_srll
__mspabi_srll:
CMP #0,R14
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
/* Logical Right Shift - R8:R11 -> R12:R15
A 64-bit argument would normally be passed in R12:R15, but __mspabi_srlll has
special conventions, so the 64-bit value to shift is passed in R8:R11.
According to the MSPABI, the shift amount is a 64-bit value in R12:R15, but
we only use the low word in R12. */
.section .text.__mspabi_srlll
.global __mspabi_srlll
__mspabi_srlll:
MOV R11, R15 ; Free up R11 first
MOV R12, R11 ; Save the shift amount in R11
MOV R10, R14
MOV R9, R13
MOV R8, R12
CMP #0,R11
JNZ 1f
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
1:
CLRC
RRC R15
RRC R14
RRC R13
RRC R12
ADD #-1,R11
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
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