diff options
author | Ranjith Kumaran <ranjith@cygnus.com> | 2000-03-18 01:48:54 +0300 |
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committer | Ranjith Kumaran <ranjith@cygnus.com> | 2000-03-18 01:48:54 +0300 |
commit | 03261851a10dd2d6900a0a00a7515a0a46fb5d76 (patch) | |
tree | 7c22ac6cbbc99fd5cd1b5426853be8d4fd7bfcf1 /libgloss/i386/cygmon-salib.c | |
parent | fae4c299f14fc23e2829c8656992eba21f79242a (diff) |
20000317 sourceware import
Diffstat (limited to 'libgloss/i386/cygmon-salib.c')
-rw-r--r-- | libgloss/i386/cygmon-salib.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/libgloss/i386/cygmon-salib.c b/libgloss/i386/cygmon-salib.c new file mode 100644 index 000000000..e0d5e72f7 --- /dev/null +++ b/libgloss/i386/cygmon-salib.c @@ -0,0 +1,165 @@ +/* + * Standard x86 syscalls for user programs running under Cygmon + * + * Copyright (c) 1998 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ + +#include <fcntl.h> +#include <stdlib.h> +#include "cygmon-syscall.h" +#include <sys/time.h> + +extern int errno; + +_syscall3(int,write,int,i,char *,c,int,len); + +_syscall3(int,read,int,i,char *,c,int,len); + +_syscall2(int,kill,int,pid,int,signal); + +_syscall2(void,__install_signal_handler,int,arg,void *,handler); +_syscall1(char **,__get_program_arguments,int *,argc); + +_syscall1(void,__sys_exit,int,exitcode); +_syscall1(void,putTtyChar,int,character); +_syscall1(time_t,time,time_t *,ptr); +_syscall2(int, gettimeofday, struct timeval *,time, struct timezone *,z); +_syscall3(int, __open, const char *, filename, int, mode, int, filemode); +_syscall4(void, profil, unsigned short *, buff, unsigned int, bufsiz, + unsigned int, offset, unsigned int, scale); +_syscall1(int, close, int, fd); + +/* Bleah. */ +int +open (const char *filename, int mode, ...) +{ + return __open (filename, mode, 0644); +} + +/* Ultra-super cheezy. */ +int +isatty (int i) +{ + return i<3; +} + +char * +sbrk (int amt) +{ + extern char _end; + static char *ptr = 0; + char *res; + if (ptr == 0) + ptr = &_end; + if (amt == 0) + return (char *)ptr; + + if (((long)ptr) % 8) + ptr = ptr + (8 - (((long)(ptr)) % 8)); + res = ptr; + ptr += amt; + return (char *)res; +} + +void +_exit(int i) +{ + while(1) { + __sys_exit (i); + asm(" int $3"); + } +} + +int +fstat(int des, struct stat *buf) +{ + return -1; +} + +int +lseek(int des,unsigned long offset, int whence) +{ + return -1; +} + +int +getpid () +{ + return -1; +} + +/* Simple replacement for the clock() syscall. */ +clock_t +clock () +{ + struct timeval t; + + gettimeofday (&t, 0); + return t.tv_sec * 1000 + (t.tv_usec / 1000); +} + +#ifndef COFF +typedef void (*ctp)(); +void +__do_global_ctors () +{ + extern int __CTOR_LIST__; + int *c = &__CTOR_LIST__; + c++; + while (*c) + { + ctp d = (ctp)*c; + (d)(); + c++; + } +} + +void +__do_global_dtors () +{ + extern int __DTOR_LIST__; + int *c = &__DTOR_LIST__; + int *cp = c; + c++; + while (*c) + { + c++; + } + c--; + while (c > cp) + { + ctp d = (ctp)*c; + (*d)(); + c--; + } +} +#endif + +void +profil_write (int type, char *buffer, int len) +{ + static int des = -1; + + if (des < 0) + { + des = open ("gmon.out", O_WRONLY | O_CREAT | O_TRUNC, 0644); + } + if (len == 0) + { + close (des); + } + else + { + write (des, buffer, len); + } +} |