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/*
* pdb_caml_xc.c
*
* http://www.cl.cam.ac.uk/netos/pdb
*
* PDB's OCaml interface library for debugging domains
*/
#include <xc.h>
#include <xendebug.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <caml/alloc.h>
#include <caml/fail.h>
#include <caml/memory.h>
#include <caml/mlvalues.h>
#include "pdb_caml_xen.h"
int xc_handle = -1;
/****************************************************************************/
/*
* open_context : unit -> unit
*/
value
open_context (value unit)
{
CAMLparam1(unit);
xc_handle = xc_interface_open();
if ( xc_handle < 0 )
{
fprintf(stderr, "(pdb) error opening xc interface: %d (%s)\n",
errno, strerror(errno));
}
CAMLreturn(Val_unit);
}
/*
* close_context : unit -> unit
*/
value
close_context (value unit)
{
CAMLparam1(unit);
int rc;
if ( (rc = xc_interface_close(xc_handle)) < 0 )
{
fprintf(stderr, "(pdb) error closing xc interface: %d (%s)\n",
errno, strerror(errno));
}
CAMLreturn(Val_unit);
}
/*********************************************************************/
void
dump_regs (cpu_user_regs_t *regs)
{
printf (" eax: %x\n", regs->eax);
printf (" ecx: %x\n", regs->ecx);
printf (" edx: %x\n", regs->edx);
printf (" ebx: %x\n", regs->ebx);
printf (" esp: %x\n", regs->esp);
printf (" ebp: %x\n", regs->ebp);
printf (" esi: %x\n", regs->esi);
printf (" edi: %x\n", regs->edi);
printf (" eip: %x\n", regs->eip);
printf (" flags: %x\n", regs->eflags);
printf (" cs: %x\n", regs->cs);
printf (" ss: %x\n", regs->ss);
printf (" es: %x\n", regs->es);
printf (" ds: %x\n", regs->ds);
printf (" fs: %x\n", regs->fs);
printf (" gs: %x\n", regs->gs);
return;
}
/*
* debugger_status : unit -> unit
*/
value
debugger_status (value unit)
{
CAMLparam1(unit);
CAMLreturn(Val_unit);
}
/****************************************************************************/
/****************************************************************************/
/*
* evtchn_bind_virq : int -> int
*/
value
evtchn_bind_virq (value virq)
{
CAMLparam1(virq);
int port;
int my_virq = Int_val(virq);
if ( xc_evtchn_bind_virq(xc_handle, my_virq, &port) < 0 )
{
printf("(pdb) evtchn_bind_virq error!\n"); fflush(stdout);
failwith("evtchn_bind_virq error");
}
CAMLreturn(Val_int(port));
}
/*
* evtchn_bind_interdomain : int -> int * int
*/
value
evtchn_bind_interdomain (value remote_domain)
{
CAMLparam1(remote_domain);
CAMLlocal1(result);
int my_remote_domain = Int_val(remote_domain);
int local_domain = 0;
int local_port = 0;
int remote_port = 0;
if ( xc_evtchn_bind_interdomain(xc_handle, local_domain, my_remote_domain,
&local_port, &remote_port) < 0 )
{
printf("(pdb) evtchn_bind_interdomain error!\n"); fflush(stdout);
failwith("evtchn_bind_interdomain error");
}
result = caml_alloc_tuple(2); /* FIXME */
Store_field(result, 0, Val_int(local_port));
Store_field(result, 1, Val_int(remote_port));
CAMLreturn(result);
}
void *
map_ring(u32 dom, unsigned long mfn )
{
return xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
PROT_READ | PROT_WRITE, mfn);
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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