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; Copyright (C) 2012-2022 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_srai_n
.macro _srai n
.global __mspabi_srai_\n
__mspabi_srai_\n:
RRA.W R12
.endm
/* Arithmetic Right Shift - R12 -> R12. */
_srai 15
_srai 14
_srai 13
_srai 12
_srai 11
_srai 10
_srai 9
_srai 8
_srai 7
_srai 6
_srai 5
_srai 4
_srai 3
_srai 2
_srai 1
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
.section .text.__mspabi_srai
1: ADD.W #-1,R13
RRA.W R12,R12
.global __mspabi_srai
__mspabi_srai:
CMP #0,R13
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
#ifdef __MSP430X__
.section .text.__gnu_mspabi_srap
1: ADDA #-1,R13
RRAX.A R12,R12
.global __gnu_mspabi_srap
__gnu_mspabi_srap:
CMP #0,R13
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif /* __MSP430X_LARGE__ */
#endif /* __MSP430X__ */
/* Arithmetic Right Shift - R12:R13 -> R12:R13. */
.section .text.__mspabi_sral_n
.macro _sral n
.global __mspabi_sral_\n
__mspabi_sral_\n:
RRA.W R13
RRC.W R12
.endm
_sral 15
_sral 14
_sral 13
_sral 12
_sral 11
_sral 10
_sral 9
_sral 8
_sral 7
_sral 6
_sral 5
_sral 4
_sral 3
_sral 2
_sral 1
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
.section .text.__mspabi_sral
1: ADD.W #-1,R14
RRA.W R13
RRC.W R12
.global __mspabi_sral
__mspabi_sral:
CMP #0,R14
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
/* Arithmetic Right Shift - R8:R11 -> R12:R15
A 64-bit argument would normally be passed in R12:R15, but __mspabi_srall 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_srall
.global __mspabi_srall
__mspabi_srall:
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:
RRA R15
RRC R14
RRC R13
RRC R12
ADD #-1,R11
JNZ 1b
#ifdef __MSP430X_LARGE__
RETA
#else
RET
#endif
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