diff options
Diffstat (limited to 'libgloss/sparc_leon/locore_var.S')
| -rw-r--r-- | libgloss/sparc_leon/locore_var.S | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/libgloss/sparc_leon/locore_var.S b/libgloss/sparc_leon/locore_var.S new file mode 100644 index 000000000..0d690bbd6 --- /dev/null +++ b/libgloss/sparc_leon/locore_var.S @@ -0,0 +1,77 @@ +/* + * 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 |