diff options
Diffstat (limited to 'libgloss/sparc_leon/nocache.S')
| -rw-r--r-- | libgloss/sparc_leon/nocache.S | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/libgloss/sparc_leon/nocache.S b/libgloss/sparc_leon/nocache.S new file mode 100644 index 000000000..12709afa5 --- /dev/null +++ b/libgloss/sparc_leon/nocache.S @@ -0,0 +1,117 @@ +/* + * 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. + */ + + +#include <asm-leon/elfmacro.h> +#include <asm-leon/leon.h> +#include <asm-leon/leonstack.h> +#include <asm-leon/contextswitch.h> +#include <asm-leon/winmacros.h> +#include <asm-leon/leonbare_kernel.h> + + FUNC_EXPORT(leonbare_leon23_loadnocache) + FUNC_EXPORT(leonbare_leon23_loadnocache16) + FUNC_EXPORT(leonbare_leon23_loadnocache8) + + FUNC_EXPORT(leonbare_leon3_loadnocache) + FUNC_EXPORT(leonbare_leon3_loadnocache16) + FUNC_EXPORT(leonbare_leon3_loadnocache8) + + + FUNC_EXPORT(leonbare_leon23_storenocache) + FUNC_EXPORT(leonbare_leon23_storenocache16) + FUNC_EXPORT(leonbare_leon23_storenocache8) + + FUNC_IMPORT(_leon_version) + + .text + +/* =================================== */ +/* LEON2 / 3 */ +/* load with forceing cache miss */ +FUNC_BEGIN(leonbare_leon23_loadnocache) /* use only %o0,%o1,%o7 */ + lda [%o0] ASI_LEON3_CACHEMISS, %o0 + retl + nop +FUNC_END(leonbare_leon23_loadnocache) + +/* load with forceing cache miss */ +FUNC_BEGIN(leonbare_leon23_loadnocache16) + lduha [%o0] ASI_LEON3_CACHEMISS, %o0 + retl + nop +FUNC_END(leonbare_leon23_loadnocache16) + +/* load with forceing cache miss */ +FUNC_BEGIN(leonbare_leon23_loadnocache8) + lduba [%o0] ASI_LEON3_CACHEMISS, %o0 + retl + nop +FUNC_END(leonbare_leon23_loadnocache8) + +/* write through cache */ +FUNC_BEGIN(leonbare_leon23_storenocache) /* use only %o0,%o1,%o7 */ + st %o1, [%o0] + retl + mov %o1,%o0 +FUNC_END(leonbare_leon23_storenocache) + +/* write through cache */ +FUNC_BEGIN(leonbare_leon23_storenocache16) + sth %o1, [%o0] + retl + mov %o1,%o0 +FUNC_END(leonbare_leon23_storenocache16) + +/* write through cache */ +FUNC_BEGIN(leonbare_leon23_storenocache8) + stb %o1, [%o0] + retl + mov %o1,%o0 +FUNC_END(leonbare_leon23_storenocache8) + + + +/* =================================== */ +/* LEON3 only */ +/* load with forceing cache miss */ +FUNC_BEGIN(leonbare_leon3_loadnocache) /* use only %o0,%o1,%o7 */ + retl + lda [%o0] ASI_LEON3_CACHEMISS, %o0 +FUNC_END(leonbare_leon3_loadnocache) + +/* load with forceing cache miss */ +FUNC_BEGIN(leonbare_leon3_loadnocache16) + retl + lduha [%o0] ASI_LEON3_CACHEMISS, %o0 +FUNC_END(leonbare_leon3_loadnocache16) + +/* load with forceing cache miss */ +FUNC_BEGIN(leonbare_leon3_loadnocache8) + retl + lduba [%o0] ASI_LEON3_CACHEMISS, %o0 +FUNC_END(leonbare_leon3_loadnocache8) + + + |