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#include <xen/config.h>
#include <xen/init.h>
#include <xen/kernel.h>
#include <xen/lib.h>
#include <xen/domain.h>
#include <xen/sched.h>
#include <xen/trace.h>
#ifndef __x86_64__
#undef TRC_64_FLAG
#define TRC_64_FLAG 0
#endif
void trace_hypercall(void)
{
struct cpu_user_regs *regs = guest_cpu_user_regs();
#ifdef __x86_64__
if ( is_pv_32on64_vcpu(current) )
{
struct {
u32 eip,eax;
} __attribute__((packed)) d;
d.eip = regs->eip;
d.eax = regs->eax;
__trace_var(TRC_PV_HYPERCALL, 1, sizeof(d), &d);
}
else
#endif
{
struct {
unsigned long eip;
u32 eax;
} __attribute__((packed)) d;
u32 event;
event = TRC_PV_HYPERCALL;
event |= TRC_64_FLAG;
d.eip = regs->eip;
d.eax = regs->eax;
__trace_var(event, 1/*tsc*/, sizeof(d), &d);
}
}
void __trace_pv_trap(int trapnr, unsigned long eip,
int use_error_code, unsigned error_code)
{
#ifdef __x86_64__
if ( is_pv_32on64_vcpu(current) )
{
struct {
unsigned eip:32,
trapnr:15,
use_error_code:1,
error_code:16;
} __attribute__((packed)) d;
d.eip = eip;
d.trapnr = trapnr;
d.error_code = error_code;
d.use_error_code=!!use_error_code;
__trace_var(TRC_PV_TRAP, 1, sizeof(d), &d);
}
else
#endif
{
struct {
unsigned long eip;
unsigned trapnr:15,
use_error_code:1,
error_code:16;
} __attribute__((packed)) d;
unsigned event;
d.eip = eip;
d.trapnr = trapnr;
d.error_code = error_code;
d.use_error_code=!!use_error_code;
event = TRC_PV_TRAP;
event |= TRC_64_FLAG;
__trace_var(event, 1, sizeof(d), &d);
}
}
void __trace_pv_page_fault(unsigned long addr, unsigned error_code)
{
unsigned long eip = guest_cpu_user_regs()->eip;
#ifdef __x86_64__
if ( is_pv_32on64_vcpu(current) )
{
struct {
u32 eip, addr, error_code;
} __attribute__((packed)) d;
d.eip = eip;
d.addr = addr;
d.error_code = error_code;
__trace_var(TRC_PV_PAGE_FAULT, 1, sizeof(d), &d);
}
else
#endif
{
struct {
unsigned long eip, addr;
u32 error_code;
} __attribute__((packed)) d;
unsigned event;
d.eip = eip;
d.addr = addr;
d.error_code = error_code;
event = TRC_PV_PAGE_FAULT;
event |= TRC_64_FLAG;
__trace_var(event, 1, sizeof(d), &d);
}
}
void __trace_trap_one_addr(unsigned event, unsigned long va)
{
#ifdef __x86_64__
if ( is_pv_32on64_vcpu(current) )
{
u32 d = va;
__trace_var(event, 1, sizeof(d), &d);
}
else
#endif
{
event |= TRC_64_FLAG;
__trace_var(event, 1, sizeof(va), &va);
}
}
void __trace_trap_two_addr(unsigned event, unsigned long va1,
unsigned long va2)
{
#ifdef __x86_64__
if ( is_pv_32on64_vcpu(current) )
{
struct {
u32 va1, va2;
} __attribute__((packed)) d;
d.va1=va1;
d.va2=va2;
__trace_var(event, 1, sizeof(d), &d);
}
else
#endif
{
struct {
unsigned long va1, va2;
} __attribute__((packed)) d;
d.va1=va1;
d.va2=va2;
event |= TRC_64_FLAG;
__trace_var(event, 1, sizeof(d), &d);
}
}
void __trace_ptwr_emulation(unsigned long addr, l1_pgentry_t npte)
{
unsigned long eip = guest_cpu_user_regs()->eip;
/* We have a couple of different modes to worry about:
* - 32-on-32: 32-bit pte, 32-bit virtual addresses
* - pae-on-pae, pae-on-64: 64-bit pte, 32-bit virtual addresses
* - 64-on-64: 64-bit pte, 64-bit virtual addresses
* pae-on-64 is the only one that requires extra code; in all other
* cases, "unsigned long" is the size of a guest virtual address.
*/
#ifdef __x86_64__
if ( is_pv_32on64_vcpu(current) )
{
struct {
l1_pgentry_t pte;
u32 addr, eip;
} __attribute__((packed)) d;
d.addr = addr;
d.eip = eip;
d.pte = npte;
__trace_var(TRC_PV_PTWR_EMULATION_PAE, 1, sizeof(d), &d);
}
else
#endif
{
struct {
l1_pgentry_t pte;
unsigned long addr, eip;
} d;
unsigned event;
d.addr = addr;
d.eip = eip;
d.pte = npte;
event = ((CONFIG_PAGING_LEVELS == 3) ?
TRC_PV_PTWR_EMULATION_PAE : TRC_PV_PTWR_EMULATION);
event |= TRC_64_FLAG;
__trace_var(event, 1/*tsc*/, sizeof(d), &d);
}
}
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