Permalink
Fetching contributors…
Cannot retrieve contributors at this time
58 lines (51 sloc) 1.78 KB
/*
* Copyright (c) 2010-2011 Anil Madhavapeddy <anil@recoil.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdint.h>
#include <assert.h>
#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/bigarray.h>
#include "barrier.h"
CAMLprim value
caml_memory_barrier()
{
xen_mb();
return Val_unit;
}
CAMLprim value caml_cstruct_unsafe_load_uint32(value vc, value vofs) {
CAMLparam2(vc, vofs);
CAMLlocal2(vb, vbofs);
vb = Field(vc, 0);
vbofs = Field(vc, 1);
int ofs = Int_val(vofs);
int bofs = Int_val(vbofs);
struct caml_ba_array *b = Caml_ba_array_val(vb);
uint32_t *data = ((uint32_t*) (b->data + bofs));
CAMLreturn (Val_int(data[ofs / sizeof(uint32_t)]));
}
CAMLprim value caml_cstruct_unsafe_save_uint32(value vc, value vofs, value x) {
CAMLparam3(vc, vofs, x);
CAMLlocal2(vb, vbofs);
vb = Field(vc, 0);
vbofs = Field(vc, 1);
int ofs = Int_val(vofs);
int bofs = Int_val(vbofs);
struct caml_ba_array *b = Caml_ba_array_val(vb);
uint32_t *data = ((uint32_t*) (b->data + bofs));
data[ofs / sizeof(uint32_t)] = Int_val(x);
CAMLreturn (Val_unit);
}