https://github.com/Unipisa/CMM
Tip revision: cfa29670480cf0d5f09f5e3055e530dec3e6ff65 authored by Giuseppe Attardi on 24 November 1996, 18:13:45 UTC
1.7 -
1.7 -
Tip revision: cfa2967
machine.h
/*---------------------------------------------------------------------------*
*
* machine.h Processor Dependent Definitions
* date: 3 January 1995
* authors: Giuseppe Attardi
* email: cmm@di.unipi.it
* address: Dipartimento di Informatica
* Corso Italia 40
* I-56125 Pisa, Italy
*
* Copyright (C) 1995 Giuseppe Attardi
*
* This file is part of the PoSSo Customizable Memory Manager (CMM).
*
* Permission to use, copy, and modify this software and its documentation is
* hereby granted only under the following terms and conditions. Both the
* above copyright notice and this permission notice must appear in all copies
* of the software, derivative works or modified versions, and any portions
* thereof, and both notices must appear in supporting documentation.
*
* Users of this software agree to the terms and conditions set forth herein,
* and agree to license at no charge to all parties under these terms and
* conditions any derivative works or modified versions of this software.
*
* This software may be distributed (but not offered for sale or transferred
* for compensation) to third parties, provided such third parties agree to
* abide by the terms and conditions of this notice.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE COPYRIGHT HOLDERS DISCLAIM ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
* 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.
*
*---------------------------------------------------------------------------*/
#ifndef _MACHINE_H
#define _MACHINE_H
/*---------------------------------------------------------------------------*
* -- Type Definitions
*---------------------------------------------------------------------------*/
typedef unsigned char Byte;
typedef unsigned long Word;
typedef Byte * Ptr;
typedef long * GCP; /* Pointer to a garbage collected object */
/*---------------------------------------------------------------------------*
* -- Compatibility
*---------------------------------------------------------------------------*/
#ifdef __cplusplus
# define C_LANG "C"
#else
# define C_LANG
#endif
#if defined(__sun__) && !defined(__svr4__)
extern C_LANG void bzero(void *, int);
#else
#include <string.h>
#define bzero(s, n) memset(s, 0, n)
#endif
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif
#if defined(__svr4__) || defined(_WIN32)
# define _setjmp setjmp
# define _longjmp longjmp
#endif
#if !defined(__BORLANDC__) && !defined(_WIN32)
extern C_LANG void* sbrk(int);
#endif
/*---------------------------------------------------------------------------*
*
* Stack growth
*
*---------------------------------------------------------------------------*/
#ifndef hp9000s800
#define STACK_GROWS_DOWNWARD
#endif
/*---------------------------------------------------------------------------*
*
* Architectures requiring double alignement for objects
*
*---------------------------------------------------------------------------*/
#if defined(__mips) || defined(__sparc) || defined(__alpha)
# define OBJ_ALIGNMENT 8
# ifndef MISALIGN
# define DOUBLE_ALIGN
# endif
#else
# define OBJ_ALIGNMENT 4
#endif
#define MEMALIGN (char *)memalign
/*---------------------------------------------------------------------------*
*
* Start of data segment
*
*---------------------------------------------------------------------------*/
#if defined(__alpha)
# define DATASTART (0x140000000)
#elif defined(__sgi) || defined(_sgi) || defined(sgi)
typedef unsigned int uint;
# include <sys/immu.h>
# define DATASTART USRDATA
#elif defined(__svr4__) || defined(DGUX)
extern int etext;
# define DATASTART SVR4DataStart(0x10000)
#elif defined(hp9000s300)
extern int etext;
# define DATASTART ((((unsigned long)(&etext)) + 0xfff) & ~0xfff)
#elif defined(__i386)
extern int etext;
# define DATASTART ((((unsigned long)(&etext)) + 0xfff) & ~0xfff)
# if defined(MSDOS) && defined(GO32)
# define STACKBOTTOM (0x80000000)
# elif defined(_WIN32)
# define STACKBOTTOM CmmGetStackBase()
# else
# define STACKBOTTOM (0xc0000000)
# endif
#elif defined(__BORLANDC__) && defined(_WIN32)
# define word WORD
void* sbrk(int i) { return NULL; }
char etext;
int end;
# define STACKBOTTOM CmmGetStackBase()
#elif defined(__mips)
# include <machine/vmparam.h>
# define DATASTART USRDATA
#elif defined(__hppa)
extern int __data_start;
# define DATASTART (&__data_start)
#elif defined(ibm032) /* IBM RT */
# define DATASTART 0x10000000
#elif defined(_IBMR2) /* IBM RS/6000 */
# define DATASTART 0x20000000
# define STACKBOTTOM ((unsigned long)0x2ff80000)
#elif defined(__NeXT)
# define DATASTART ((unsigned long) get_etext())
# define STACKBOTTOM ((unsigned long) 0x4000000)
#elif defined(ns32000)
extern char **environ;
# define DATASTART (&environ)
#elif defined(__sparc)
/* This assumes ZMAGIC, i.e. demand-loadable executables. */
# define DATASTART (*(int *)0x2004+0x2000)
#elif defined(sun3)
extern char etext;
# define DATASTART ((((unsigned long)(&etext)) + 0x1ffff) & ~0x1ffff)
#elif defined(SCO)
# define DATASTART ((((unsigned long)(&etext)) + 0x3fffff) & ~0x3fffff) \
+ ((unsigned long)&etext & 0xfff)
#elif defined(_AUX_SOURCE)
/* This only works for shared-text binaries with magic number 0413.
The other sorts of SysV binaries put the data at the end of the text,
in which case the default of &etext would work. Unfortunately,
handling both would require having the magic-number available.
-- Parag
*/
# define DATASTART ((((unsigned long)(&etext)) + 0x3fffff) & ~0x3fffff) \
+ ((unsigned long)&etext & 0x1fff)
#else
/* The default case works only for contiguous text and data, such as */
/* on a Vax. */
extern char etext;
# define DATASTART (&etext)
#endif
#define SVR4DataStart(max_page_size) \
((unsigned long)(&etext) % max_page_size ? \
(unsigned long)(&etext) + max_page_size : \
(unsigned long)&etext)
#endif /* ! _MACHINE_H */