diff options
Diffstat (limited to 'libgloss/sparc_leon/kernel_context.S')
-rw-r--r-- | libgloss/sparc_leon/kernel_context.S | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/libgloss/sparc_leon/kernel_context.S b/libgloss/sparc_leon/kernel_context.S deleted file mode 100644 index 0b8cad7aa..000000000 --- a/libgloss/sparc_leon/kernel_context.S +++ /dev/null @@ -1,112 +0,0 @@ -/* - * 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_kernel_switchto) - FUNC_EXPORT(_leonbare_Stop) - - FUNC_IMPORT(leonbare_disable_traps) - - .text - -/* unsigned int _leonbare_kernel_switchto(struct leonbare_thread_ctx *thread,struct leonbare_thread_ctx *thread) */ -FUNC_BEGIN(_leonbare_kernel_switchto) - - /* =================================*/ - /* save context */ - /* =================================*/ - - mov %o0, %g1 - mov %o1, %g2 - mov %o7, %g3 - rd %psr, %g4 /* psr.cwp should stay same because irq path rely on it. */ - - call leonbare_disable_traps /* psr in %o0, modify %o0, %o1, %o7 */ - nop - - set TACODE_IRQCALL_FLUSH,%o1 - ta TACODE_IRQCALL - - st %g4, [%g1 + LEONBARE_THREAD_CTX_STACK_PSR] /* psr */ - set LEONBARE_THREAD_CTX_MAGIC,%g4 - st %g4, [%g1 + LEONBARE_THREAD_CTX_STACK_MAGIC] - - mov %g3, %o7 ! restore %o7 - - LEONBARE_THREAD_CTX_STORE_INS(g1) - LEONBARE_THREAD_CTX_STORE_LOCALS(g1) - LEONBARE_THREAD_CTX_STORE_OUTS(g1) - - /* =================================*/ - /* restore context */ - /* =================================*/ - - /* check valid context stack area */ - ld [%g2 + LEONBARE_THREAD_CTX_STACK_MAGIC], %o1 - set LEONBARE_THREAD_CTX_MAGIC,%o2 - cmp %o1, %o2 - beq 1f - nop - - /* stop all */ - ta 0x0 - -1: - /* get psr */ - ld [%g2 + LEONBARE_THREAD_CTX_STACK_PSR],%g1 /* psr.cwp should stay same because irq path rely on it. */ - set SPARC_PSR_EF_MASK,%g3 ! clear ef bit - andn %g1, %g3, %g1 - - wr %g0,%wim - nop; nop; nop; - - andn %g1, SPARC_PSR_ET_MASK, %g3 ! disable traps, up to PSR_EF imm andn ok - wr %g3, %psr - nop; nop; nop; - - LEONBARE_THREAD_CTX_LOAD_INS(g2) - LEONBARE_THREAD_CTX_LOAD_LOCALS(g2) - LEONBARE_THREAD_CTX_LOAD_OUTS(g2) - - SET_WIM_CWPMIN1(g1,o1,o2,o3,o4) ! calc wim from psr_cwp so that next restore traps - - wr %g1,%psr - nop; nop; nop; - - retl - nop - -FUNC_END(_leonbare_kernel_switchto) - - -FUNC_BEGIN(_leonbare_Stop) - ta 0x0 -FUNC_END(_leonbare_Stop) |