d10da21643
Make TIB handling use buffer size to conform with ANS Forth. Add ANS MEMORY-ALLOC word set. See the PRs for extensive details. PR: kern/9412 kern/9442 kern/9514 Submitted by: PRs from Daniel Sobral <dcs@newsguy.com>
253 lines
6.5 KiB
C
253 lines
6.5 KiB
C
/*******************************************************************
|
|
s y s d e p . h
|
|
** Forth Inspired Command Language
|
|
** Author: John Sadler (john_sadler@alum.mit.edu)
|
|
** Created: 16 Oct 1997
|
|
** Ficl system dependent types and prototypes...
|
|
**
|
|
** Note: Ficl also depends on the use of "assert" when
|
|
** FICL_ROBUST is enabled. This may require some consideration
|
|
** in firmware systems since assert often
|
|
** assumes stderr/stdout.
|
|
**
|
|
*******************************************************************/
|
|
/*
|
|
** N O T I C E -- DISCLAIMER OF WARRANTY
|
|
**
|
|
** Ficl is freeware. Use it in any way that you like, with
|
|
** the understanding that the code is not supported.
|
|
**
|
|
** Any third party may reproduce, distribute, or modify the ficl
|
|
** software code or any derivative works thereof without any
|
|
** compensation or license, provided that the author information
|
|
** and this disclaimer text are retained in the source code files.
|
|
** The ficl software code is provided on an "as is" basis without
|
|
** warranty of any kind, including, without limitation, the implied
|
|
** warranties of merchantability and fitness for a particular purpose
|
|
** and their equivalents under the laws of any jurisdiction.
|
|
**
|
|
** I am interested in hearing from anyone who uses ficl. If you have
|
|
** a problem, a success story, a defect, an enhancement request, or
|
|
** if you would like to contribute to the ficl release (yay!), please
|
|
** send me email at the address above.
|
|
*/
|
|
|
|
#if !defined (__SYSDEP_H__)
|
|
#define __SYSDEP_H__
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <stddef.h> /* size_t, NULL */
|
|
#include <setjmp.h>
|
|
|
|
#include <assert.h>
|
|
|
|
#if !defined IGNORE /* Macro to silence unused param warnings */
|
|
#define IGNORE(x) &x
|
|
#endif
|
|
|
|
|
|
/*
|
|
** TRUE and FALSE for C boolean operations, and
|
|
** portable 32 bit types for CELLs
|
|
**
|
|
*/
|
|
#if !defined TRUE
|
|
#define TRUE 1
|
|
#endif
|
|
#if !defined FALSE
|
|
#define FALSE 0
|
|
#endif
|
|
|
|
|
|
#if !defined INT32
|
|
#define INT32 int32_t
|
|
#endif
|
|
|
|
#if !defined UNS32
|
|
#define UNS32 u_int32_t
|
|
#endif
|
|
|
|
#if !defined UNS16
|
|
#define UNS16 u_int16_t
|
|
#endif
|
|
|
|
#if !defined UNS8
|
|
#define UNS8 u_int8_t
|
|
#endif
|
|
|
|
#if !defined NULL
|
|
#define NULL ((void *)0)
|
|
#endif
|
|
|
|
typedef struct
|
|
{
|
|
UNS32 hi;
|
|
UNS32 lo;
|
|
} UNS64;
|
|
|
|
typedef struct
|
|
{
|
|
UNS32 quot;
|
|
UNS32 rem;
|
|
} UNSQR;
|
|
|
|
typedef struct
|
|
{
|
|
INT32 hi;
|
|
INT32 lo;
|
|
} INT64;
|
|
|
|
typedef struct
|
|
{
|
|
INT32 quot;
|
|
INT32 rem;
|
|
} INTQR;
|
|
|
|
|
|
/*
|
|
** Build controls
|
|
** FICL_MULTITHREAD enables dictionary mutual exclusion
|
|
** wia the ficlLockDictionary system dependent function.
|
|
*/
|
|
#if !defined FICL_MULTITHREAD
|
|
#define FICL_MULTITHREAD 0
|
|
#endif
|
|
|
|
/*
|
|
** FICL_ROBUST enables bounds checking of stacks and the dictionary.
|
|
** This will detect stack over and underflows and dictionary overflows.
|
|
** Any exceptional condition will result in an assertion failure.
|
|
** (As generated by the ANSI assert macro)
|
|
** FICL_ROBUST == 1 --> stack checking in the outer interpreter
|
|
** FICL_ROBUST == 2 also enables checking in many primitives
|
|
*/
|
|
|
|
#if !defined FICL_ROBUST
|
|
#define FICL_ROBUST 2
|
|
#endif
|
|
|
|
/*
|
|
** FICL_DEFAULT_STACK Specifies the default size (in CELLs) of
|
|
** a new virtual machine's stacks, unless overridden at
|
|
** create time.
|
|
*/
|
|
#if !defined FICL_DEFAULT_STACK
|
|
#define FICL_DEFAULT_STACK 128
|
|
#endif
|
|
|
|
/*
|
|
** FICL_DEFAULT_DICT specifies the number of CELLs to allocate
|
|
** for the system dictionary by default. The value
|
|
** can be overridden at startup time as well.
|
|
** FICL_DEFAULT_ENV specifies the number of cells to allot
|
|
** for the environment-query dictionary.
|
|
*/
|
|
#if !defined FICL_DEFAULT_DICT
|
|
#define FICL_DEFAULT_DICT 12288
|
|
#endif
|
|
|
|
#if !defined FICL_DEFAULT_ENV
|
|
#define FICL_DEFAULT_ENV 260
|
|
#endif
|
|
|
|
/*
|
|
** FICL_DEFAULT_VOCS specifies the maximum number of wordlists in
|
|
** the dictionary search order. See Forth DPANS sec 16.3.3
|
|
** (file://dpans16.htm#16.3.3)
|
|
*/
|
|
#if !defined FICL_DEFAULT_VOCS
|
|
#define FICL_DEFAULT_VOCS 16
|
|
#endif
|
|
|
|
/*
|
|
** User variables: per-instance variables bound to the VM.
|
|
** Kinda like thread-local storage. Could be implemented in a
|
|
** VM private dictionary, but I've chosen the lower overhead
|
|
** approach of an array of CELLs instead.
|
|
*/
|
|
#if !defined FICL_WANT_USER
|
|
#define FICL_WANT_USER 1
|
|
#endif
|
|
|
|
#if !defined FICL_USER_CELLS
|
|
#define FICL_USER_CELLS 16
|
|
#endif
|
|
|
|
/*
|
|
** FICL_WANT_LOCALS controls the creation of the LOCALS wordset and
|
|
** a private dictionary for local variable compilation.
|
|
*/
|
|
#if !defined FICL_WANT_LOCALS
|
|
#define FICL_WANT_LOCALS 1
|
|
#endif
|
|
|
|
/* Max number of local variables per definition */
|
|
#if !defined FICL_MAX_LOCALS
|
|
#define FICL_MAX_LOCALS 16
|
|
#endif
|
|
|
|
/*
|
|
** FICL_ALIGN is the power of two to which the dictionary
|
|
** pointer address must be aligned. This value is usually
|
|
** either 1 or 2, depending on the memory architecture
|
|
** of the target system; 2 is safe on any 16 or 32 bit
|
|
** machine.
|
|
*/
|
|
#if !defined FICL_ALIGN
|
|
#define FICL_ALIGN 2
|
|
#define FICL_ALIGN_ADD ((1 << FICL_ALIGN) - 1)
|
|
#endif
|
|
|
|
/*
|
|
** System dependent routines --
|
|
** edit the implementations in sysdep.c to be compatible
|
|
** with your runtime environment...
|
|
** ficlTextOut sends a NULL terminated string to the
|
|
** default output device - used for system error messages
|
|
** ficlMalloc and ficlFree have the same semantics as malloc and free
|
|
** in standard C
|
|
** ficlLongMul multiplies two UNS32s and returns a 64 bit unsigned
|
|
** product
|
|
** ficlLongDiv divides an UNS64 by an UNS32 and returns UNS32 quotient
|
|
** and remainder
|
|
*/
|
|
struct vm;
|
|
void ficlTextOut(struct vm *pVM, char *msg, int fNewline);
|
|
void *ficlMalloc (size_t size);
|
|
void *ficlRealloc (void *p, size_t size);
|
|
void ficlFree (void *p);
|
|
|
|
/*
|
|
** Stub function for dictionary access control - does nothing
|
|
** by default, user can redefine to guarantee exclusive dict
|
|
** access to a single thread for updates. All dict update code
|
|
** must be bracketed as follows:
|
|
** ficlLockDictionary(TRUE);
|
|
** <code that updates dictionary>
|
|
** ficlLockDictionary(FALSE);
|
|
**
|
|
** Returns zero if successful, nonzero if unable to acquire lock
|
|
** before timeout (optional - could also block forever)
|
|
**
|
|
** NOTE: this function must be implemented with lock counting
|
|
** semantics: nested calls must behave properly.
|
|
*/
|
|
#if FICL_MULTITHREAD
|
|
int ficlLockDictionary(short fLock);
|
|
#else
|
|
#define ficlLockDictionary(x) 0 /* ignore */
|
|
#endif
|
|
|
|
/*
|
|
** 64 bit integer math support routines: multiply two UNS32s
|
|
** to get a 64 bit prodict, & divide the product by an UNS32
|
|
** to get an UNS32 quotient and remainder. Much easier in asm
|
|
** on a 32 bit CPU than in C, which usually doesn't support
|
|
** the double length result (but it should).
|
|
*/
|
|
UNS64 ficlLongMul(UNS32 x, UNS32 y);
|
|
UNSQR ficlLongDiv(UNS64 q, UNS32 y);
|
|
|
|
#endif /*__SYSDEP_H__*/
|