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create area for to save fp regs

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refs #421
This commit is contained in:
Tomoki Shirasawa
2015-03-05 12:16:05 +09:00
parent 9946ccd6b1
commit e6011be1af
4 changed files with 108 additions and 0 deletions
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37
arch/x86/kernel/cpu.c
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@ -14,6 +14,7 @@
#include <ihk/cpu.h>
#include <ihk/debug.h>
#include <ihk/mm.h>
#include <types.h>
#include <errno.h>
#include <list.h>
@ -984,6 +985,42 @@ int ihk_mc_interrupt_cpu(int cpu, int vector)
return 0;
}
void
release_fp_regs(struct process *proc)
{
int pages;
if (!proc->fp_regs)
return;
pages = (sizeof(fp_regs_struct) + 4095) >> 12;
ihk_mc_free_pages(proc->fp_regs, 1);
proc->fp_regs = NULL;
}
void
save_fp_regs(struct process *proc)
{
int pages;
if (proc->fp_regs)
return;
pages = (sizeof(fp_regs_struct) + 4095) >> 12;
proc->fp_regs = ihk_mc_alloc_pages(pages, IHK_MC_AP_NOWAIT);
if(!proc->fp_regs)
return;
memset(proc->fp_regs, 0, sizeof(fp_regs_struct));
// TODO: do xsave
}
void
restore_fp_regs(struct process *proc)
{
if (!proc->fp_regs)
return;
// TODO: do xrstor
release_fp_regs(proc);
}
ihk_mc_user_context_t *lookup_user_context(struct process *proc)
{
ihk_mc_user_context_t *uctx = proc->uctx;