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#include <common.h>
#include <mem_malloc.h>
#include <errno.h>
/*
* Begin and End of memory area for malloc(), and current "brk"
*/
static ulong mem_malloc_start = 0;
static ulong mem_malloc_end = 0;
static ulong mem_malloc_brk = 0;
void mem_malloc_init (void *start, void *end)
{
mem_malloc_start = (ulong)start;
mem_malloc_end = (ulong)end;
mem_malloc_brk = mem_malloc_start;
}
void *sbrk_no_zero(ptrdiff_t increment)
{
ulong old = mem_malloc_brk;
ulong new = old + increment;
if ((new < mem_malloc_start) || (new > mem_malloc_end))
return NULL;
mem_malloc_brk = new;
return (void *)old;
}
void *sbrk (ptrdiff_t increment)
{
void *old = sbrk_no_zero(increment);
memset (old, 0, increment);
return old;
}
int errno;
#ifndef CONFIG_ERRNO_MESSAGES
static char errno_string[5];
#endif
const char *errno_str(void)
{
#ifdef CONFIG_ERRNO_MESSAGES
char *str;
switch(-errno) {
case 0 : str = "No error"; break;
case EPERM : str = "Operation not permitted"; break;
case ENOENT : str = "No such file or directory"; break;
case EIO : str = "I/O error"; break;
case ENXIO : str = "No such device or address"; break;
case E2BIG : str = "Arg list too long"; break;
case ENOEXEC : str = "Exec format error"; break;
case EBADF : str = "Bad file number"; break;
case ENOMEM : str = "Out of memory"; break;
case EACCES : str = "Permission denied"; break;
case EFAULT : str = "Bad address"; break;
case EBUSY : str = "Device or resource busy"; break;
case EEXIST : str = "File exists"; break;
case ENODEV : str = "No such device"; break;
case ENOTDIR : str = "Not a directory"; break;
case EISDIR : str = "Is a directory"; break;
case EINVAL : str = "Invalid argument"; break;
case ENOSPC : str = "No space left on device"; break;
case ESPIPE : str = "Illegal seek"; break;
case EROFS : str = "Read-only file system"; break;
case ENAMETOOLONG : str = "File name too long"; break;
case ENOSYS : str = "Function not implemented"; break;
case ENOTEMPTY : str = "Directory not empty"; break;
#if 0 /* These are probably not needed */
case ENOTBLK : str = "Block device required"; break;
case EFBIG : str = "File too large"; break;
case EBADSLT : str = "Invalid slot"; break;
case ENODATA : str = "No data available"; break;
case ETIME : str = "Timer expired"; break;
case ENONET : str = "Machine is not on the network"; break;
case EADV : str = "Advertise error"; break;
case ECOMM : str = "Communication error on send"; break;
case EPROTO : str = "Protocol error"; break;
case EBADMSG : str = "Not a data message"; break;
case EOVERFLOW : str = "Value too large for defined data type"; break;
case EBADFD : str = "File descriptor in bad state"; break;
case EREMCHG : str = "Remote address changed"; break;
case EMSGSIZE : str = "Message too long"; break;
case EPROTOTYPE : str = "Protocol wrong type for socket"; break;
case ENOPROTOOPT : str = "Protocol not available"; break;
case EPROTONOSUPPORT : str = "Protocol not supported"; break;
case ESOCKTNOSUPPORT : str = "Socket type not supported"; break;
case EPFNOSUPPORT : str = "Protocol family not supported"; break;
case EAFNOSUPPORT : str = "Address family not supported by protocol"; break;
case EADDRINUSE : str = "Address already in use"; break;
case EADDRNOTAVAIL : str = "Cannot assign requested address"; break;
case ENETDOWN : str = "Network is down"; break;
case ENETUNREACH : str = "Network is unreachable"; break;
case ENETRESET : str = "Network dropped connection because of reset"; break;
case ECONNABORTED : str = "Software caused connection abort"; break;
case ECONNRESET : str = "Connection reset by peer"; break;
case ENOBUFS : str = "No buffer space available"; break;
case ETIMEDOUT : str = "Connection timed out"; break;
case ECONNREFUSED : str = "Connection refused"; break;
case EHOSTDOWN : str = "Host is down"; break;
case EHOSTUNREACH : str = "No route to host"; break;
case EALREADY : str = "Operation already in progress"; break;
case EINPROGRESS : str = "Operation now in progress"; break;
case ESTALE : str = "Stale NFS file handle"; break;
case EISNAM : str = "Is a named type file"; break;
case EREMOTEIO : str = "Remote I/O error"; break;
#endif
default : str = "unknown error"; break;
};
return str;
#else
sprintf(errno_string, "%d", errno);
return errno_string;
#endif
}
void perror(const char *s)
{
#ifdef CONFIG_ERRNO_MESSAGES
printf("%s: %s\n", s, errno_str());
#else
printf("%s returned with %d\n", s, errno);
#endif
}
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