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/*
* Standard x86 syscalls for user programs running under Cygmon
*
* Copyright (c) 1998, 2000 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);
#if 0
_syscall3(int,read,int,i,char *,c,int,len);
#else
int
read (int des, char *dest, int len)
{
return -1;
}
#endif
_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, ...)
{
#if 0
return __open (filename, mode, 0644);
#else
return -1;
#endif
}
/* Ultra-super cheezy. */
int
isatty (int i)
{
return i<3;
}
int unlink (const char *p)
{
return -1;
}
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);
}
#if ! defined(COFF) && ! defined(AOUT)
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);
}
}
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