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/*
* Copyright (C) 2005 Hewlett-Packard Co.
* written by Aravind Menon & Jose Renato Santos
* (email: xenoprof@groups.hp.com)
*
* Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* x86 specific part
*/
#include <xen/guest_access.h>
#include <xen/sched.h>
#include <xen/xenoprof.h>
#include <public/xenoprof.h>
#include <compat/xenoprof.h>
#include <asm/hvm/support.h>
#include "op_counter.h"
int xenoprof_arch_counter(XEN_GUEST_HANDLE_PARAM(void) arg)
{
struct xenoprof_counter counter;
if ( copy_from_guest(&counter, arg, 1) )
return -EFAULT;
if ( counter.ind >= OP_MAX_COUNTER )
return -E2BIG;
counter_config[counter.ind].count = counter.count;
counter_config[counter.ind].enabled = counter.enabled;
counter_config[counter.ind].event = counter.event;
counter_config[counter.ind].kernel = counter.kernel;
counter_config[counter.ind].user = counter.user;
counter_config[counter.ind].unit_mask = counter.unit_mask;
return 0;
}
int xenoprof_arch_ibs_counter(XEN_GUEST_HANDLE_PARAM(void) arg)
{
struct xenoprof_ibs_counter ibs_counter;
if ( copy_from_guest(&ibs_counter, arg, 1) )
return -EFAULT;
ibs_config.op_enabled = ibs_counter.op_enabled;
ibs_config.fetch_enabled = ibs_counter.fetch_enabled;
ibs_config.max_cnt_fetch = ibs_counter.max_cnt_fetch;
ibs_config.max_cnt_op = ibs_counter.max_cnt_op;
ibs_config.rand_en = ibs_counter.rand_en;
ibs_config.dispatched_ops = ibs_counter.dispatched_ops;
return 0;
}
int compat_oprof_arch_counter(XEN_GUEST_HANDLE_PARAM(void) arg)
{
struct compat_oprof_counter counter;
if ( copy_from_guest(&counter, arg, 1) )
return -EFAULT;
if ( counter.ind >= OP_MAX_COUNTER )
return -E2BIG;
counter_config[counter.ind].count = counter.count;
counter_config[counter.ind].enabled = counter.enabled;
counter_config[counter.ind].event = counter.event;
counter_config[counter.ind].kernel = counter.kernel;
counter_config[counter.ind].user = counter.user;
counter_config[counter.ind].unit_mask = counter.unit_mask;
return 0;
}
int xenoprofile_get_mode(struct vcpu *curr, const struct cpu_user_regs *regs)
{
if ( !guest_mode(regs) )
return 2;
if ( !is_hvm_vcpu(curr) )
return guest_kernel_mode(curr, regs);
switch ( hvm_guest_x86_mode(curr) )
{
struct segment_register ss;
case 0: /* real mode */
return 1;
case 1: /* vm86 mode */
return 0;
default:
hvm_get_segment_register(curr, x86_seg_ss, &ss);
return (ss.sel & 3) != 3;
}
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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