newlib/libgloss/sparc_leon/locore_var.S

78 lines
2.1 KiB
ArmAsm

/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
.section .text
/* ------- */
.weak _hardreset_custom_weak
.set _hardreset_custom_weak,_hardreset_custom_weak_dummy
/* ------- */
.global _nwindows, _leon_version, _nwindows_min1
_hardreset_custom_weak_dummy:
!''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
! get nwindows and leon version
mov %psr, %l3
srl %l3, 24, %g5
and %g5, 3, %g5
subcc %g5, 3, %g0 ! leon3: 3
bne 1f
nop
set _leon_version,%l0
set 3,%l1
st %l1,[%l0]
mov %asr17, %g5 ! leon3 has nwindows in %asr17
ba 2f
1:
/* other version */
2:
and %g5, 0x1f, %g5
set _nwindows_min1, %l3
st %g5, [%l3]
add %g5,1,%g5
set _nwindows, %l3
st %g5, [%l3]
set _nwindows_min2, %l3
sub %g5,2,%g5
st %g5, [%l3]
!''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
retl
nop
!''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
.section .data
.global _nwindows, _leon_version, _nwindows_min1, _nwindows_min2
_nwindows:
.word 8
_nwindows_min1:
.word 7
_nwindows_min2:
.word 6
_leon_version:
.word 3