| 0,0 → 1,85 |
|---|
| /* |
| * Copyright (C) 2005 Ondrej Palkovsky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup amd64proc |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <proc/scheduler.h> |
| #include <cpu.h> |
| #include <proc/task.h> |
| #include <proc/thread.h> |
| #include <arch.h> |
| #include <arch/context.h> /* SP_DELTA */ |
| #include <arch/asm.h> |
| #include <arch/debugger.h> |
| #include <print.h> |
| #include <arch/pm.h> |
| #include <arch/ddi/ddi.h> |
| |
| /** Perform amd64 specific tasks needed before the new task is run. |
| * |
| * Interrupts are disabled. |
| */ |
| void before_task_runs_arch(void) |
| { |
| io_perm_bitmap_install(); |
| } |
| |
| /** Perform amd64 specific tasks needed before the new thread is scheduled. */ |
| void before_thread_runs_arch(void) |
| { |
| CPU->arch.tss->rsp0 = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA]; |
| |
| /* Syscall support - write address of thread stack pointer to |
| * hidden part of gs */ |
| swapgs(); |
| write_msr(AMD_MSR_GS, (uint64_t)&THREAD->kstack); |
| swapgs(); |
| |
| /* TLS support - set FS to thread local storage */ |
| write_msr(AMD_MSR_FS, THREAD->arch.tls); |
| |
| #ifdef CONFIG_DEBUG_AS_WATCHPOINT |
| /* Set watchpoint on AS to ensure that nobody sets it to zero */ |
| if (CPU->id < BKPOINTS_MAX) |
| breakpoint_add(&((the_t *) THREAD->kstack)->as, |
| BKPOINT_WRITE | BKPOINT_CHECK_ZERO, |
| CPU->id); |
| #endif |
| } |
| |
| void after_thread_ran_arch(void) |
| { |
| } |
| |
| /** @} |
| */ |
| |