ack/lang/m2/libm2/store.c
2018-06-25 22:22:37 +02:00

40 lines
876 B
C

/*
(c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/*
Module: store values from stack, byte by byte
Author: Ceriel J.H. Jacobs
Version: $Id$
*/
#include "libm2.h"
#include <m2_traps.h>
#ifndef EM_WSIZE
#define EM_WSIZE _EM_WSIZE
#define EM_PSIZE _EM_PSIZE
#endif
void store(size_t siz, char* addr, int p)
{
/* Make sure, that a value with a size that could have been
handled by the LOI instruction is handled as if it was
loaded with the LOI instruction.
*/
register char* q = (char*)&p;
char t[4];
if (siz < EM_WSIZE && EM_WSIZE % siz == 0)
{
/* as long as EM_WSIZE <= 4 ... */
if (siz != 2)
TRP(M2_INTERNAL); /* internal error */
*((unsigned short*)(&t[0])) = *((unsigned*)q);
q = &t[0];
}
while (siz--)
*addr++ = *q++;
}