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/*
* Copyright (c) 2012 Anil Madhavapeddy <anil@recoil.org>
* Copyright (c) 2012 Pierre Chambart
*
* 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 <string.h>
#include <stdint.h>
#include <caml/mlvalues.h>
#include <caml/memory.h>
#include <caml/alloc.h>
#include <caml/bigarray.h>
#ifndef Bytes_val
#define Bytes_val String_val
#endif
CAMLprim value
caml_blit_bigstring_to_string(value val_buf1, value val_ofs1, value val_buf2, value val_ofs2, value val_len)
{
memcpy(Bytes_val(val_buf2) + Long_val(val_ofs2),
(char*)Caml_ba_data_val(val_buf1) + Long_val(val_ofs1),
Long_val(val_len));
return Val_unit;
}
CAMLprim value
caml_blit_string_to_bigstring(value val_buf1, value val_ofs1, value val_buf2, value val_ofs2, value val_len)
{
memcpy((char*)Caml_ba_data_val(val_buf2) + Long_val(val_ofs2),
String_val(val_buf1) + Long_val(val_ofs1),
Long_val(val_len));
return Val_unit;
}
CAMLprim value
caml_blit_bigstring_to_bigstring(value val_buf1, value val_ofs1, value val_buf2, value val_ofs2, value val_len)
{
memmove((char*)Caml_ba_data_val(val_buf2) + Long_val(val_ofs2),
(char*)Caml_ba_data_val(val_buf1) + Long_val(val_ofs1),
Long_val(val_len));
return Val_unit;
}
CAMLprim value
caml_compare_bigstring(value val_buf1, value val_ofs1, value val_buf2, value val_ofs2, value val_len)
{
int res = memcmp((char*)Caml_ba_data_val(val_buf1) + Long_val(val_ofs1),
(char*)Caml_ba_data_val(val_buf2) + Long_val(val_ofs2),
Long_val(val_len));
return Val_int(res);
}
CAMLprim value
caml_fill_bigstring(value val_buf, value val_ofs, value val_len, value val_byte)
{
memset((char*)Caml_ba_data_val(val_buf) + Long_val(val_ofs),
Int_val(val_byte),
Long_val(val_len));
return Val_unit;
}
CAMLprim value
caml_check_alignment_bigstring(value val_buf, value val_ofs, value val_alignment)
{
uint64_t address = (uint64_t) ((char *)Caml_ba_data_val(val_buf) + Long_val(val_ofs));
uintnat alignment = Unsigned_long_val(val_alignment);
return Val_bool(address % alignment == 0);
}
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