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/* Virtual array support.
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to the Free
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _VARRAY_H_
#define _VARRAY_H_
#ifndef PROTO
#include "gansidecl.h"
#endif
#ifndef HOST_WIDE_INT
#include "machmode.h"
#endif
#ifndef __GCC_SYSTEM_H__
#include "system.h"
#endif
/* Union of various array types that are used. */
typedef union varray_data_tag {
char c[1];
unsigned char uc[1];
short s[1];
unsigned short us[1];
int i[1];
unsigned int u[1];
long l[1];
unsigned long ul[1];
HOST_WIDE_INT hint[1];
unsigned HOST_WIDE_INT uhint[1];
GENERIC_PTR generic[1];
char *cptr[1];
struct rtx_def *rtx[1];
struct rtvec_def *rtvec[1];
union tree_node *tree[1];
struct bitmap_head_def *bitmap[1];
struct sched_info_tag *sched[1];
struct reg_info_def *reg[1];
} varray_data;
/* Virtual array of pointers header. */
typedef struct varray_head_tag {
size_t num_elements; /* maximum element number allocated */
size_t element_size; /* size of each data element */
const char *name; /* name of the varray for reporting errors */
varray_data data; /* data elements follow, must be last */
} *varray_type;
/* Allocate a virtual array with NUM elements, each of which is SIZE bytes
long, named NAME. Array elements are zeroed. */
extern varray_type varray_init PROTO ((size_t, size_t, const char *));
#define VARRAY_CHAR_INIT(va, num, name) \
va = varray_init (num, sizeof (char), name)
#define VARRAY_UCHAR_INIT(va, num, name) \
va = varray_init (num, sizeof (unsigned char), name)
#define VARRAY_SHORT_INIT(va, num, name) \
va = varray_init (num, sizeof (short), name)
#define VARRAY_USHORT_INIT(va, num, name) \
va = varray_init (num, sizeof (unsigned short), name)
#define VARRAY_INT_INIT(va, num, name) \
va = varray_init (num, sizeof (int), name)
#define VARRAY_UINT_INIT(va, num, name) \
va = varray_init (num, sizeof (unsigned int), name)
#define VARRAY_LONG_INIT(va, num, name) \
va = varray_init (num, sizeof (long), name)
#define VARRAY_ULONG_INIT(va, num, name) \
va = varray_init (num, sizeof (unsigned long), name)
#define VARRAY_WIDE_INT_INIT(va, num, name) \
va = varray_init (num, sizeof (HOST_WIDE_INT), name)
#define VARRAY_UWIDE_INT_INIT(va, num, name) \
va = varray_init (num, sizeof (unsigned HOST_WIDE_INT), name)
#define VARRAY_GENERIC_PTR_INIT(va, num, name) \
va = varray_init (num, sizeof (GENERIC_PTR), name)
#define VARRAY_CHAR_PTR_INIT(va, num, name) \
va = varray_init (num, sizeof (char *), name)
#define VARRAY_RTX_INIT(va, num, name) \
va = varray_init (num, sizeof (struct rtx_def *), name)
#define VARRAY_RTVEC_INIT(va, num, name) \
va = varray_init (num, sizeof (struct rtvec_def), name)
#define VARRAY_TREE_INIT(va, num, name) \
va = varray_init (num, sizeof (union tree_node *), name)
#define VARRAY_BITMAP_INIT(va, num, name) \
va = varray_init (num, sizeof (struct bitmap_head_def *), name)
#define VARRAY_SCHED_INIT(va, num, name) \
va = varray_init (num, sizeof (struct sched_info_tag *), name)
#define VARRAY_REG_INIT(va, num, name) \
va = varray_init (num, sizeof (struct reg_info_def *), name)
/* Free up memory allocated by the virtual array, but do not free any of the
elements involved. */
#define VARRAY_FREE(vp) \
do { if (vp) { free (vp); vp = (varray_type)0; } } while (0)
/* Grow/shrink the virtual array VA to N elements. */
extern varray_type varray_grow PROTO((varray_type, size_t));
#define VARRAY_GROW(VA, N) ((VA) = varray_grow (VA, N))
/* Check for VARRAY_xxx macros being in bound, return N for use as an
index. */
#ifdef ENABLE_CHECKING
#define VARRAY_CHECK(VA, N) \
((((size_t)(N) < (VA)->num_elements) \
? 0 \
: (fatal ("Virtual array %s element %ld out of bounds, at %s:%d", \
(VA)->name, (long)(N), __FILE__, __LINE__), 0)), \
(N))
#else
#define VARRAY_CHECK(VA, N) (N)
#endif
#define VARRAY_CHAR(VA, N) ((VA)->data.c[ VARRAY_CHECK (VA, N) ])
#define VARRAY_UCHAR(VA, N) ((VA)->data.uc[ VARRAY_CHECK (VA, N) ])
#define VARRAY_SHORT(VA, N) ((VA)->data.s[ VARRAY_CHECK (VA, N) ])
#define VARRAY_USHORT(VA, N) ((VA)->data.us[ VARRAY_CHECK (VA, N) ])
#define VARRAY_INT(VA, N) ((VA)->data.i[ VARRAY_CHECK (VA, N) ])
#define VARRAY_UINT(VA, N) ((VA)->data.u[ VARRAY_CHECK (VA, N) ])
#define VARRAY_LONG(VA, N) ((VA)->data.l[ VARRAY_CHECK (VA, N) ])
#define VARRAY_ULONG(VA, N) ((VA)->data.ul[ VARRAY_CHECK (VA, N) ])
#define VARRAY_WIDE_INT(VA, N) ((VA)->data.hint[ VARRAY_CHECK (VA, N) ])
#define VARRAY_UWIDE_INT(VA, N) ((VA)->data.uhint[ VARRAY_CHECK (VA, N) ])
#define VARRAY_GENERIC_PTR(VA,N) ((VA)->data.generic[ VARRAY_CHECK (VA, N) ])
#define VARRAY_CHAR_PTR(VA,N) ((VA)->data.cptr[ VARRAY_CHECK (VA, N) ])
#define VARRAY_RTX(VA, N) ((VA)->data.rtx[ VARRAY_CHECK (VA, N) ])
#define VARRAY_RTVEC(VA, N) ((VA)->data.rtvec[ VARRAY_CHECK (VA, N) ])
#define VARRAY_TREE(VA, N) ((VA)->data.tree[ VARRAY_CHECK (VA, N) ])
#define VARRAY_BITMAP(VA, N) ((VA)->data.bitmap[ VARRAY_CHECK (VA, N) ])
#define VARRAY_SCHED(VA, N) ((VA)->data.sched[ VARRAY_CHECK (VA, N) ])
#define VARRAY_REG(VA, N) ((VA)->data.reg[ VARRAY_CHECK (VA, N) ])
#endif /* _VARRAY_H_ */
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