mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-12 00:50:40 +00:00
6b433caaaa
Initial check-in to mozilla tree: JSRef development is migrating from JSFUN13_BRANCH of /m/src repository to /m/pub
289 lines
6.7 KiB
C
289 lines
6.7 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
/*
|
|
* Generate CPU-specific bit-size and similar #defines.
|
|
*/
|
|
#include <stdio.h>
|
|
|
|
#if defined(sgi)
|
|
#ifndef IRIX
|
|
# error "IRIX is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(__sun)
|
|
#if defined(__svr4) || defined(__svr4__)
|
|
#ifndef SOLARIS
|
|
# error "SOLARIS is not defined"
|
|
#endif
|
|
#else
|
|
#ifndef SUNOS4
|
|
# error "SUNOS4 is not defined"
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(__hpux)
|
|
#ifndef HPUX
|
|
# error "HPUX is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(__alpha)
|
|
#ifndef OSF1
|
|
# error "OSF1 is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(_IBMR2)
|
|
#ifndef AIX
|
|
# error "AIX is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(linux)
|
|
#ifndef LINUX
|
|
# error "LINUX is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(bsdi)
|
|
#ifndef BSDI
|
|
# error "BSDI is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(M_UNIX)
|
|
#ifndef SCO
|
|
# error "SCO is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#if !defined(M_UNIX) && defined(_USLC_)
|
|
#ifndef UNIXWARE
|
|
# error "UNIXWARE is not defined"
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef __MWERKS__
|
|
#define XP_MAC 1
|
|
#endif
|
|
|
|
/************************************************************************/
|
|
|
|
/* Generate cpucfg.h */
|
|
#ifdef XP_MAC
|
|
#include <Types.h>
|
|
#define INT64 UnsignedWide
|
|
#else
|
|
#ifdef XP_PC
|
|
#ifdef WIN32
|
|
#define INT64 _int64
|
|
#else
|
|
#define INT64 long
|
|
#endif
|
|
#else
|
|
#if defined(HPUX) || defined(SCO) || defined(UNIXWARE)
|
|
#define INT64 long
|
|
#else
|
|
#define INT64 long long
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
typedef void *prword;
|
|
|
|
struct align_short {
|
|
char c;
|
|
short a;
|
|
};
|
|
struct align_int {
|
|
char c;
|
|
int a;
|
|
};
|
|
struct align_long {
|
|
char c;
|
|
long a;
|
|
};
|
|
struct align_int64 {
|
|
char c;
|
|
INT64 a;
|
|
};
|
|
struct align_fakelonglong {
|
|
char c;
|
|
struct {
|
|
long hi, lo;
|
|
} a;
|
|
};
|
|
struct align_float {
|
|
char c;
|
|
float a;
|
|
};
|
|
struct align_double {
|
|
char c;
|
|
double a;
|
|
};
|
|
struct align_pointer {
|
|
char c;
|
|
void *a;
|
|
};
|
|
struct align_prword {
|
|
char c;
|
|
prword a;
|
|
};
|
|
|
|
#define ALIGN_OF(type) \
|
|
(((char*)&(((struct align_##type *)0)->a)) - ((char*)0))
|
|
|
|
int bpb;
|
|
|
|
static int Log2(int n)
|
|
{
|
|
int log2 = 0;
|
|
|
|
if (n & (n-1))
|
|
log2++;
|
|
if (n >> 16)
|
|
log2 += 16, n >>= 16;
|
|
if (n >> 8)
|
|
log2 += 8, n >>= 8;
|
|
if (n >> 4)
|
|
log2 += 4, n >>= 4;
|
|
if (n >> 2)
|
|
log2 += 2, n >>= 2;
|
|
if (n >> 1)
|
|
log2++;
|
|
return log2;
|
|
}
|
|
|
|
/* We assume that int's are 32 bits */
|
|
static void do64(void)
|
|
{
|
|
union {
|
|
long i;
|
|
char c[4];
|
|
} u;
|
|
|
|
u.i = 0x01020304;
|
|
if (u.c[0] == 0x01) {
|
|
printf("#undef IS_LITTLE_ENDIAN\n");
|
|
printf("#define IS_BIG_ENDIAN 1\n\n");
|
|
} else {
|
|
printf("#define IS_LITTLE_ENDIAN 1\n");
|
|
printf("#undef IS_BIG_ENDIAN\n\n");
|
|
}
|
|
}
|
|
|
|
static void do32(void)
|
|
{
|
|
union {
|
|
long i;
|
|
char c[4];
|
|
} u;
|
|
|
|
u.i = 0x01020304;
|
|
if (u.c[0] == 0x01) {
|
|
printf("#undef IS_LITTLE_ENDIAN\n");
|
|
printf("#define IS_BIG_ENDIAN 1\n\n");
|
|
} else {
|
|
printf("#define IS_LITTLE_ENDIAN 1\n");
|
|
printf("#undef IS_BIG_ENDIAN\n\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Conceivably this could actually be used, but there is lots of code out
|
|
* there with ands and shifts in it that assumes a byte is exactly 8 bits,
|
|
* so forget about porting THIS code to all those non 8 bit byte machines.
|
|
*/
|
|
static void BitsPerByte(void)
|
|
{
|
|
bpb = 8;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
BitsPerByte();
|
|
|
|
printf("#ifndef nspr_cpucfg___\n");
|
|
printf("#define nspr_cpucfg___\n\n");
|
|
|
|
printf("/* AUTOMATICALLY GENERATED - DO NOT EDIT */\n\n");
|
|
|
|
if (sizeof(long) == 8) {
|
|
do64();
|
|
} else {
|
|
do32();
|
|
}
|
|
printf("#define PR_BYTES_PER_BYTE %dL\n", sizeof(char));
|
|
printf("#define PR_BYTES_PER_SHORT %dL\n", sizeof(short));
|
|
printf("#define PR_BYTES_PER_INT %dL\n", sizeof(int));
|
|
printf("#define PR_BYTES_PER_INT64 %dL\n", 8);
|
|
printf("#define PR_BYTES_PER_LONG %dL\n", sizeof(long));
|
|
printf("#define PR_BYTES_PER_FLOAT %dL\n", sizeof(float));
|
|
printf("#define PR_BYTES_PER_DOUBLE %dL\n", sizeof(double));
|
|
printf("#define PR_BYTES_PER_WORD %dL\n", sizeof(prword));
|
|
printf("#define PR_BYTES_PER_DWORD %dL\n", 8);
|
|
printf("\n");
|
|
|
|
printf("#define PR_BITS_PER_BYTE %dL\n", bpb);
|
|
printf("#define PR_BITS_PER_SHORT %dL\n", bpb * sizeof(short));
|
|
printf("#define PR_BITS_PER_INT %dL\n", bpb * sizeof(int));
|
|
printf("#define PR_BITS_PER_INT64 %dL\n", bpb * 8);
|
|
printf("#define PR_BITS_PER_LONG %dL\n", bpb * sizeof(long));
|
|
printf("#define PR_BITS_PER_FLOAT %dL\n", bpb * sizeof(float));
|
|
printf("#define PR_BITS_PER_DOUBLE %dL\n", bpb * sizeof(double));
|
|
printf("#define PR_BITS_PER_WORD %dL\n", bpb * sizeof(prword));
|
|
printf("\n");
|
|
|
|
printf("#define PR_BITS_PER_BYTE_LOG2 %dL\n", Log2(bpb));
|
|
printf("#define PR_BITS_PER_SHORT_LOG2 %dL\n", Log2(bpb * sizeof(short)));
|
|
printf("#define PR_BITS_PER_INT_LOG2 %dL\n", Log2(bpb * sizeof(int)));
|
|
printf("#define PR_BITS_PER_INT64_LOG2 %dL\n", 6);
|
|
printf("#define PR_BITS_PER_LONG_LOG2 %dL\n", Log2(bpb * sizeof(long)));
|
|
printf("#define PR_BITS_PER_FLOAT_LOG2 %dL\n", Log2(bpb * sizeof(float)));
|
|
printf("#define PR_BITS_PER_DOUBLE_LOG2 %dL\n", Log2(bpb * sizeof(double)));
|
|
printf("#define PR_BITS_PER_WORD_LOG2 %dL\n", Log2(bpb * sizeof(prword)));
|
|
printf("\n");
|
|
|
|
printf("#define PR_ALIGN_OF_SHORT %dL\n", ALIGN_OF(short));
|
|
printf("#define PR_ALIGN_OF_INT %dL\n", ALIGN_OF(int));
|
|
printf("#define PR_ALIGN_OF_LONG %dL\n", ALIGN_OF(long));
|
|
if (sizeof(INT64) < 8) {
|
|
/* this machine doesn't actually support int64's */
|
|
printf("#define PR_ALIGN_OF_INT64 %dL\n", ALIGN_OF(fakelonglong));
|
|
} else {
|
|
printf("#define PR_ALIGN_OF_INT64 %dL\n", ALIGN_OF(int64));
|
|
}
|
|
printf("#define PR_ALIGN_OF_FLOAT %dL\n", ALIGN_OF(float));
|
|
printf("#define PR_ALIGN_OF_DOUBLE %dL\n", ALIGN_OF(double));
|
|
printf("#define PR_ALIGN_OF_POINTER %dL\n", ALIGN_OF(pointer));
|
|
printf("#define PR_ALIGN_OF_WORD %dL\n", ALIGN_OF(prword));
|
|
printf("\n");
|
|
|
|
printf("#define PR_BYTES_PER_WORD_LOG2 %dL\n", Log2(sizeof(prword)));
|
|
printf("#define PR_BYTES_PER_DWORD_LOG2 %dL\n", Log2(8));
|
|
printf("#define PR_WORDS_PER_DWORD_LOG2 %dL\n", Log2(8/sizeof(prword)));
|
|
printf("\n");
|
|
|
|
printf("#endif /* nspr_cpucfg___ */\n");
|
|
|
|
return 0;
|
|
}
|