/* * The contents of this file are subject to the Mozilla Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is the Netscape Portable Runtime library. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1994-2000 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): Silicon Graphics, Inc. * * Portions created by SGI are Copyright (C) 2000-2001 Silicon * Graphics, Inc. All Rights Reserved. * * Alternatively, the contents of this file may be used under the * terms of the GNU General Public License Version 2 or later (the * "GPL"), in which case the provisions of the GPL are applicable * instead of those above. If you wish to allow use of your * version of this file only under the terms of the GPL and not to * allow others to use your version of this file under the MPL, * indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by * the GPL. If you do not delete the provisions above, a recipient * may use your version of this file under either the MPL or the * GPL. */ /* * This file is derived directly from Netscape Communications Corporation, * and consists of extensive modifications made during the year(s) 1999-2000. */ #ifndef __ST_MD_H__ #define __ST_MD_H__ #if defined(ETIMEDOUT) && !defined(ETIME) #define ETIME ETIMEDOUT #endif #if defined(MAP_ANONYMOUS) && !defined(MAP_ANON) #define MAP_ANON MAP_ANONYMOUS #endif #ifndef MAP_FAILED #define MAP_FAILED -1 #endif /***************************************** * Platform specifics */ #if defined (LINUX) /* linux ok, defined bellow */ #elif defined (AIX) #error "AIX not supported" #elif defined (CYGWIN) #error "CYGWIN not supported" #elif defined (DARWIN) #error "DARWIN not supported" #elif defined (FREEBSD) #error "FREEBSD not supported" #elif defined (HPUX) #error "HPUX not supported" #elif defined (IRIX) #error "IRIX not supported" #elif defined (NETBSD) #error "NETBSD not supported" #elif defined (OPENBSD) #error "OPENBSD not supported" #elif defined (OSF1) #error "OSF1 not supported" #elif defined (SOLARIS) #error "SOLARIS not supported" #else #error "Unknown OS" #endif /* OS */ /* linux only, defined bellow */ /* * These are properties of the linux kernel and are the same on every * flavor and architecture. */ #define MD_USE_BSD_ANON_MMAP #define MD_ACCEPT_NB_NOT_INHERITED #define MD_ALWAYS_UNSERIALIZED_ACCEPT /* * Modern GNU/Linux is Posix.1g compliant. */ #define MD_HAVE_SOCKLEN_T /* * All architectures and flavors of linux have the gettimeofday * function but if you know of a faster way, use it. */ #define MD_GET_UTIME() \ struct timeval tv; \ (void) gettimeofday(&tv, NULL); \ return (tv.tv_sec * 1000000LL + tv.tv_usec) #if defined(__mips__) #define MD_STACK_GROWS_DOWN #else /* Not or mips */ /* * On linux, there are a few styles of jmpbuf format. These vary based * on architecture/glibc combination. * * Most of the glibc based toggles were lifted from: * mozilla/nsprpub/pr/include/md/_linux.h */ /* * Starting with glibc 2.4, JB_SP definitions are not public anymore. * They, however, can still be found in glibc source tree in * architecture-specific "jmpbuf-offsets.h" files. * Most importantly, the content of jmp_buf is mangled by setjmp to make * it completely opaque (the mangling can be disabled by setting the * LD_POINTER_GUARD environment variable before application execution). * Therefore we will use built-in _st_md_cxt_save/_st_md_cxt_restore * functions as a setjmp/longjmp replacement wherever they are available * unless USE_LIBC_SETJMP is defined. */ #if defined(__i386__) #define MD_STACK_GROWS_DOWN #define MD_USE_BUILTIN_SETJMP #if defined(__GLIBC__) && __GLIBC__ >= 2 #ifndef JB_SP #define JB_SP 4 #endif #define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[JB_SP] #else /* not an error but certainly cause for caution */ #error "Untested use of old glibc on i386" #define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[0].__sp #endif #elif defined(__amd64__) || defined(__x86_64__) #define MD_STACK_GROWS_DOWN #define MD_USE_BUILTIN_SETJMP #ifndef JB_RSP #define JB_RSP 6 #endif #define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[JB_RSP] #elif defined(__arm__) #define MD_STACK_GROWS_DOWN #if defined(__GLIBC__) && __GLIBC__ >= 2 #define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[8] #else #error "ARM/Linux pre-glibc2 not supported yet" #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ #else #error "Unknown CPU architecture" #endif /* Cases with common MD_INIT_CONTEXT and different SP locations */ #endif /* Cases with different MD_INIT_CONTEXT */ #if defined(MD_USE_BUILTIN_SETJMP) && !defined(USE_LIBC_SETJMP) /* i386/x86_64 */ #define MD_SETJMP(env) _st_md_cxt_save(env) #define MD_LONGJMP(env, val) _st_md_cxt_restore(env, val) extern int _st_md_cxt_save(jmp_buf env); extern void _st_md_cxt_restore(jmp_buf env, int val); #else /* arm/mips */ #define MD_SETJMP(env) setjmp(env) #define MD_LONGJMP(env, val) longjmp(env, val) #endif /***************************************** * Other defines */ #ifndef MD_STACK_PAD_SIZE #define MD_STACK_PAD_SIZE 128 #endif #if !defined(MD_HAVE_SOCKLEN_T) && !defined(socklen_t) #define socklen_t int #endif #ifndef MD_CAP_STACK #define MD_CAP_STACK(var_addr) #endif #endif /* !__ST_MD_H__ */