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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/arch/amd64/src/proc/scheduler.c @ 1189

  → /kernel/trunk/arch/amd64/src/proc/scheduler.c @ 1190

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1189 → Rev 1190

/kernel/trunk/arch/amd64/src/proc/scheduler.c
37,38 → 37,21
#include <print.h>
#include <arch/pm.h>
/** Perform amd64 specific tasks needed before the new task is run. */
/** Perform amd64 specific tasks needed before the new task is run.
*
* Interrupts are disabled.
*/
void before_task_runs_arch(void)
{
}
/** Perform amd64 specific tasks needed before the new thread is scheduled. */
void before_thread_runs_arch(void)
{
size_t iomap_size;
ptr_16_64_t cpugdtr;
descriptor_t *gdt_p;
CPU->arch.tss->rsp0 = (__address) &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, (__u64)&THREAD->kstack);
swapgs();
/* TLS support - set FS to thread local storage */
write_msr(AMD_MSR_FS, THREAD->arch.tls);
/*
* Switch the I/O Permission Bitmap, if necessary.
*
* First, copy the I/O Permission Bitmap.
* This needs to be changed so that the
* copying is avoided if the same task
* was already running and the iomap did
* not change.
*/
/* First, copy the I/O Permission Bitmap. */
spinlock_lock(&TASK->lock);
iomap_size = TASK->arch.iomap_size;
if (iomap_size) {
83,7 → 66,22
gdt_p = (descriptor_t *) cpugdtr.base;
gdt_tss_setlimit(&gdt_p[TSS_DES], TSS_BASIC_SIZE + iomap_size - 1);
gdtr_load(&cpugdtr);
}
/** Perform amd64 specific tasks needed before the new thread is scheduled. */
void before_thread_runs_arch(void)
{
CPU->arch.tss->rsp0 = (__address) &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, (__u64)&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)