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gcc/libiberty/mpw.c

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/* MPW-Unix compatibility library.
Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
Libiberty is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This should only be compiled and linked under MPW. */
#include "mpw.h"
#include <stdlib.h>
#ifndef USE_MW_HEADERS
#include <sys/time.h>
#include <sys/resource.h>
#endif
#include <Types.h>
#include <Files.h>
#include <Timer.h>
/* Initialize to 0 at first, then set to errno_max() later. */
int sys_nerr = 0;
/* Debug flag for pathname hacking. Set this to one and rebuild. */
int DebugPI = -1;
void
mpwify_filename(char *unixname, char *macname)
{
int i, j;
/* (should truncate 255 chars from end of name, not beginning) */
if (strlen (unixname) > 255)
{
fprintf (stderr, "Pathname \"%s\" is too long for Macs, truncating\n",
unixname);
}
j = 0;
/* If you're going to end up with one or more colons in the middle of a
path after an all-Unix relative path is translated, you must add a
colon on the front, so that the first component is not thought to be
a disk name. */
if (unixname[0] != '/' && ! strchr (unixname, ':') && strchr (unixname, '/'))
{
macname[j++] = ':';
}
for (i = 0; unixname[i] != '\0' && i < 255; ++i)
{
if (i == 0 && unixname[i] == '/')
{
if (strncmp (unixname, "/tmp/", 5) == 0)
{
/* A temporary name, make a more Mac-flavored tmpname. */
/* A better choice would be {Boot}Trash:foo, but
that would require being able to identify the
boot disk's and trashcan's name. Another option
would be to have an env var, so user can point it
at a ramdisk. */
macname[j++] = ':';
macname[j++] = 't';
macname[j++] = 'm';
macname[j++] = 'p';
macname[j++] = '_';
i += 4;
}
else
{
/* Don't copy the leading slash. */
}
}
else if (unixname[i] == ':' && unixname[i+1] == '/')
{
macname[j++] = ':';
i += 1;
}
else if (unixname[i] == '.' && unixname[i+1] == '/')
{
macname[j++] = ':';
i += 1;
}
else if (unixname[i] == '.' && unixname[i+1] == '.' && unixname[i+2] == '/')
{
macname[j++] = ':';
macname[j++] = ':';
i += 2;
}
else if (unixname[i] == '/')
{
macname[j++] = ':';
}
else
{
macname[j++] = unixname[i];
}
}
macname[j] = '\0';
/* Allow for getting the debug flag from an env var; quite useful. */
if (DebugPI < 0)
DebugPI = (*(getenv ("DEBUG_PATHNAMES")) == '1' ? 1 : 0);
if (DebugPI)
{
fprintf (stderr, "# Made \"%s\"\n", unixname);
fprintf (stderr, "# into \"%s\"\n", macname);
}
}
/* MPW-flavored basename finder. */
char *
mpw_basename (name)
char *name;
{
char *base = name;
while (*name)
{
if (*name++ == ':')
{
base = name;
}
}
return base;
}
/* Mixed MPW/Unix basename finder. This can be led astray by
filenames with slashes in them and come up with a basename that
either corresponds to no file or (worse) to some other file, so
should only be tried if other methods of finding a file via a
basename have failed. */
char *
mpw_mixed_basename (name)
char *name;
{
char *base = name;
while (*name)
{
if (*name == '/' || *name == ':')
{
base = name + 1;
}
++name;
}
return base;
}
/* This function is fopen() modified to create files that are type TEXT
or 'BIN ', and always of type 'MPS '. */
FILE *
mpw_fopen (char *name, char *mode)
{
#undef fopen
int errnum;
FILE *fp;
char tmpname[256];
mpwify_filename (name, tmpname);
PROGRESS (1);
fp = fopen (tmpname, mode);
errnum = errno;
/* If writing, need to set type and creator usefully. */
if (strchr (mode, 'w'))
{
char *pname = (char *) malloc (strlen (tmpname) + 2);
OSErr e;
struct FInfo fi;
pname[0] = strlen (tmpname);
strcpy (pname+1, tmpname);
e = GetFInfo ((ConstStr255Param) pname, 0, &fi);
/* should do spiffier error handling */
if (e != 0)
fprintf(stderr, "GetFInfo returns %d\n", e);
if (strchr (mode, 'b'))
{
fi.fdType = (OSType) 'BIN ';
}
else
{
fi.fdType = (OSType) 'TEXT';
}
fi.fdCreator = (OSType) 'MPS ';
e = SetFInfo ((ConstStr255Param) pname, 0, &fi);
if (e != 0)
fprintf(stderr, "SetFInfo returns %d\n", e);
free (pname);
}
if (fp == NULL)
errno = errnum;
return fp;
}
/* This is a version of fseek() modified to fill the file with zeros
if seeking past the end of it. */
#define ZEROBLKSIZE 4096
char zeros[ZEROBLKSIZE];
int
mpw_fseek (FILE *fp, int offset, int whence)
{
#undef fseek
int cursize, numleft;
PROGRESS (1);
if (whence == SEEK_SET)
{
fseek (fp, 0, SEEK_END);
cursize = ftell (fp);
if (offset > cursize)
{
numleft = offset - cursize;
while (numleft > ZEROBLKSIZE)
{
/* This might fail, should check for that. */
PROGRESS (1);
fwrite (zeros, 1, ZEROBLKSIZE, fp);
numleft -= ZEROBLKSIZE;
}
PROGRESS (1);
fwrite (zeros, 1, numleft, fp);
fflush (fp);
}
}
return fseek (fp, offset, whence);
}
int
mpw_fread (char *ptr, int size, int nitems, FILE *stream)
{
#undef fread
int rslt;
PROGRESS (1);
rslt = fread (ptr, size, nitems, stream);
PROGRESS (1);
return rslt;
}
int
mpw_fwrite (char *ptr, int size, int nitems, FILE *stream)
{
#undef fwrite
int rslt;
PROGRESS (1);
rslt = fwrite (ptr, size, nitems, stream);
PROGRESS (1);
return rslt;
}
int
link ()
{
fprintf (stderr, "link not available!\n");
mpw_abort ();
}
int
fork ()
{
fprintf (stderr, "fork not available!\n");
mpw_abort ();
}
int
vfork ()
{
fprintf (stderr, "vfork not available!\n");
mpw_abort ();
return (-1);
}
int
pipe (int *fd)
{
fprintf (stderr, "pipe not available!\n");
mpw_abort ();
return (-1);
}
#ifndef USE_MW_HEADERS
int
execvp (char *file, char **argv)
{
fprintf (stderr, "execvp not available!\n");
mpw_abort ();
return (-1);
}
int
execv (char *path, char **argv)
{
fprintf (stderr, "execv not available!\n");
mpw_abort ();
return (-1);
}
#endif
int
kill (int pid, int sig)
{
fprintf (stderr, "kill not available!\n");
mpw_abort ();
return (-1);
}
int
wait (int *status)
{
*status = 0;
return 0;
}
#ifndef USE_MW_HEADERS
int
sleep (int seconds)
{
unsigned long start_time, now;
time (&start_time);
while (1)
{
PROGRESS (1);
time (&now);
if (now > start_time + seconds)
return 0;
}
}
#endif
void
putenv (char *str)
{
/* The GCC driver calls this to do things for collect2, but we
don't care about collect2. */
}
int
chmod (char *path, int mode)
{
/* Pretend it was all OK. */
return 0;
}
#ifndef USE_MW_HEADERS
int
getuid ()
{
/* One value is as good as another... */
return 0;
}
int
getgid ()
{
/* One value is as good as another... */
return 0;
}
#endif
/* Instead of coredumping, which is not a normal Mac facility, we
drop into Macsbug. If we then "g" from Macsbug, the program will
exit cleanly. */
void
mpw_abort ()
{
/* Make sure no output still buffered up, then zap into MacsBug. */
fflush(stdout);
fflush(stderr);
printf("## Abort! ##\n");
#ifdef MPW_SADE
SysError(8005);
#else
Debugger();
#endif
/* "g" in MacsBug will then cause a regular error exit. */
exit (1);
}
/* Imitation getrusage based on the ANSI clock() function. */
int
getrusage (int who, struct rusage *rusage)
{
int clk = clock ();
#if 0
rusage->ru_utime.tv_sec = clk / CLOCKS_PER_SEC;
rusage->ru_utime.tv_usec = ((clk * 1000) / CLOCKS_PER_SEC) * 1000;
rusage->ru_stime.tv_sec = 0;
rusage->ru_stime.tv_usec = 0;
#endif
}
int
sbrk ()
{
return 0;
}
#ifndef USE_MW_HEADERS
int
isatty (int fd)
{
return 0;
}
/* This is inherited from Timothy Murray's Posix library. */
#include "utime.h"
int
utime (char *filename, struct utimbuf *times)
{
CInfoPBRec cipbr;
HFileInfo *fpb = (HFileInfo *) &cipbr;
DirInfo *dpb = (DirInfo *) &cipbr;
unsigned char pname[256];
short err;
strcpy ((char *) pname, filename);
c2pstr (pname);
dpb->ioDrDirID = 0L;
fpb->ioNamePtr = pname;
fpb->ioVRefNum = 0;
fpb->ioFDirIndex = 0;
fpb->ioFVersNum = 0;
err = PBGetCatInfo (&cipbr, 0);
if (err != noErr) {
errno = ENOENT;
return -1;
}
dpb->ioDrDirID = 0L;
fpb->ioFlMdDat = times->modtime;
fpb->ioFlCrDat = times->actime;
err = PBSetCatInfo (&cipbr, 0);
if (err != noErr) {
errno = EACCES;
return -1;
}
return 0;
}
int
mkdir (char *path, int mode)
{
errno = ENOSYS;
return -1;
}
int
rmdir ()
{
errno = ENOSYS;
return -1;
}
#endif
chown ()
{
errno = ENOSYS;
return -1;
}
char *myenviron[] = {NULL};
char **environ = myenviron;
#ifndef USE_MW_HEADERS
/* Minimal 'stat' emulation: tells directories from files and
gives length and mtime.
Derived from code written by Guido van Rossum, CWI, Amsterdam
and placed by him in the public domain. */
extern int __uid, __gid;
int __uid = 0;
int __gid = 0;
/* Bits in ioFlAttrib: */
#define LOCKBIT (1<<0) /* File locked */
#define DIRBIT (1<<4) /* It's a directory */
/* Macified "stat" in which filename is given relative to a directory,
specified by long DirID. */
static int
_stat (char *name, long dirid, struct stat *buf)
{
CInfoPBRec cipbr;
HFileInfo *fpb = (HFileInfo*) &cipbr;
DirInfo *dpb = (DirInfo*) &cipbr;
Str255 pname;
short err;
/* Make a temp copy of the name and pascalize. */
strcpy ((char *) pname, name);
c2pstr (pname);
cipbr.dirInfo.ioDrDirID = dirid;
cipbr.hFileInfo.ioNamePtr = pname;
cipbr.hFileInfo.ioVRefNum = 0;
cipbr.hFileInfo.ioFDirIndex = 0;
cipbr.hFileInfo.ioFVersNum = 0;
err = PBGetCatInfo (&cipbr, 0);
if (err != noErr)
{
errno = ENOENT;
return -1;
}
/* Mac files are readable if they can be accessed at all. */
buf->st_mode = 0444;
/* Mark unlocked files as writeable. */
if (!(fpb->ioFlAttrib & LOCKBIT))
buf->st_mode |= 0222;
if (fpb->ioFlAttrib & DIRBIT)
{
/* Mark directories as "executable". */
buf->st_mode |= 0111 | S_IFDIR;
buf->st_size = dpb->ioDrNmFls;
buf->st_rsize = 0;
}
else
{
buf->st_mode |= S_IFREG;
/* Mark apps as "executable". */
if (fpb->ioFlFndrInfo.fdType == 'APPL')
buf->st_mode |= 0111;
/* Fill in the sizes of data and resource forks. */
buf->st_size = fpb->ioFlLgLen;
buf->st_rsize = fpb->ioFlRLgLen;
}
/* Fill in various times. */
buf->st_atime = fpb->ioFlCrDat;
buf->st_mtime = fpb->ioFlMdDat;
buf->st_ctime = fpb->ioFlCrDat;
/* Set up an imitation inode number. */
buf->st_ino = (unsigned short) fpb->ioDirID;
/* Set up an imitation device. */
GetVRefNum (buf->st_ino, &buf->st_dev);
buf->st_uid = __uid;
buf->st_gid = __gid;
/* buf->st_FlFndrInfo = fpb->ioFlFndrInfo; */
return 0;
}
/* stat() sets up an empty dirid. */
int
stat (char *path, struct stat *buf)
{
long rslt, errnum;
char tmpname[256];
mpwify_filename (path, tmpname);
if (DebugPI)
fprintf (stderr, "# stat (%s, %x)", tmpname, buf);
PROGRESS (1);
rslt = _stat (tmpname, 0L, buf);
errnum = errno;
if (DebugPI)
{
fprintf (stderr, " -> %d", rslt);
if (rslt != 0)
fprintf (stderr, " (errno is %d)", errnum);
fprintf (stderr, "\n");
fflush (stderr);
}
if (rslt != 0)
errno = errnum;
return rslt;
}
int
fstat (int fd, struct stat *buf)
{
FCBPBRec fcb;
FILE *fp;
Str255 pathname;
long dirid = 0L, temp;
long rslt, errnum;
short err;
if (DebugPI < 0)
DebugPI = (*(getenv ("DEBUG_PATHNAMES")) == '1' ? 1 : 0);
if (DebugPI)
fprintf (stderr, "# fstat (%d, %x)", fd, buf);
PROGRESS (1);
pathname[0] = 0;
#ifdef FIOFNAME
/* Use an MPW-specific ioctl to get the pathname associated with
the file descriptor. */
ioctl (fd, FIOFNAME, (long *) pathname);
#else
you lose
#endif
if (DebugPI)
fprintf (stderr, " (name is %s)", pathname);
dirid = 0L /* fcb.ioFCBParID */ ;
rslt = _stat ((char *) pathname, dirid, buf);
errnum = errno;
if (DebugPI)
{
fprintf (stderr, " -> %d", rslt);
if (rslt != 0)
fprintf (stderr, " (errno is %d)", errnum);
fprintf (stderr, "\n");
fflush (stderr);
}
if (rslt != 0)
errno = errnum;
return rslt;
}
#endif /* n USE_MW_HEADERS */
chdir ()
{
errno = ENOSYS;
return (-1);
}
char *
getcwd (char *buf, int size)
{
if (buf == NULL)
buf = (char *) malloc (size);
strcpy(buf, ":");
return buf;
}
/* This should probably be more elaborate for MPW. */
char *
getpwd ()
{
return ":";
}
int
mpw_open (char *filename, int arg2, int arg3)
{
#undef open
int fd, errnum = 0;
char tmpname[256];
mpwify_filename (filename, tmpname);
fd = open (tmpname, arg2);
errnum = errno;
if (DebugPI)
{
fprintf (stderr, "# open (%s, %d, %d)", tmpname, arg2, arg3);
fprintf (stderr, " -> %d", fd);
if (fd == -1)
fprintf (stderr, " (errno is %d)", errnum);
fprintf (stderr, "\n");
}
if (fd == -1)
errno = errnum;
return fd;
}
int
mpw_access (char *filename, unsigned int cmd)
{
#undef access
int rslt, errnum = 0;
struct stat st;
char tmpname[256];
mpwify_filename (filename, tmpname);
if (cmd & R_OK || cmd & X_OK)
{
rslt = stat (tmpname, &st);
errnum = errno;
if (rslt >= 0)
{
if ((((st.st_mode & 004) == 0) && (cmd & R_OK))
|| (((st.st_mode & 002) == 0) && (cmd & W_OK))
|| (((st.st_mode & 001) == 0) && (cmd & X_OK)))
{
rslt = -1;
errnum = EACCES;
}
}
}
if (DebugPI)
{
fprintf (stderr, "# mpw_access (%s, %d)", tmpname, cmd);
fprintf (stderr, " -> %d", rslt);
if (rslt != 0)
fprintf (stderr, " (errno is %d)", errnum);
fprintf (stderr, "\n");
}
if (rslt != 0)
errno = errnum;
return rslt;
}
/* The MPW library creat() has no mode argument. */
int
mpw_creat (char *path, /* mode_t */ int mode)
{
#undef creat
#ifdef USE_MW_HEADERS
return creat (path, mode);
#else
return creat (path);
#endif
}
/* This is a hack to get control in an MPW tool before it crashes the
machine. */
mpw_special_init (name)
char *name;
{
if (strstr (name, "DEBUG"))
DebugStr("\pat beginning of program");
}
static int current_umask;
int
umask(int mask)
{
int oldmask = current_umask;
current_umask = mask;
return oldmask;
}
/* Cursor-spinning stuff that includes metering of spin rate and delays. */
/* Nonzero when cursor spinning has been set up properly. */
int cursor_inited;
/* Nonzero if spin should be measured and excessive delays reported. */
int measure_spin;
/* Nonzero if spin histogram and rate data should be written out. */
int dump_spin_data;
long warning_threshold = 400000;
long bucket_size = 1024;
long bucket_power = 10;
long numbuckets = 300;
int *delay_counts;
int overflow_count;
char *current_progress;
static UnsignedWide last_microseconds;
static char *last_spin_file = "";
static int last_spin_line;
void
warn_if_spin_delay (char *file, int line)
{
long diff, ix;
UnsignedWide now;
Microseconds(&now);
diff = now.lo - last_microseconds.lo;
if (diff > warning_threshold)
fprintf (stderr, "# %s: %ld.%06ld sec delay getting from %s:%d to %s:%d\n",
(current_progress ? current_progress : ""),
diff / 1000000, diff % 1000000,
last_spin_file, last_spin_line, file, line);
if (dump_spin_data)
{
if (diff >= 0)
{
ix = diff >> bucket_power;
if (ix >= 0 && ix < numbuckets && delay_counts != NULL)
++delay_counts[ix];
else
++overflow_count;
}
else
fprintf (stderr, "raw diff is %ld (?)\n", diff);
}
}
void
record_for_spin_delay (char *file, int line)
{
Microseconds (&last_microseconds);
last_spin_file = file;
last_spin_line = line;
}
void
mpw_start_progress (char *str, int n, char *file, int line)
{
int i;
char *measure, *threshold;
if (!cursor_inited)
{
InitCursorCtl (nil);
cursor_inited = 1;
record_for_spin_delay (file, line);
measure = getenv ("MEASURE_SPIN");
if (measure != NULL && measure[0] != '\0')
{
measure_spin = 1;
if (strcmp (measure, "all") == 0)
dump_spin_data = 1;
}
threshold = getenv ("SPIN_WARN_THRESHOLD");
if (threshold != NULL && threshold[0] != '\0')
warning_threshold = atol (threshold);
if (dump_spin_data)
{
if (delay_counts == NULL)
delay_counts = (int *) malloc (numbuckets * sizeof (int));
for (i = 0; i < numbuckets; ++i)
delay_counts[i] = 0;
overflow_count = 0;
}
}
current_progress = str;
sys_nerr = errno_max ();
mpw_special_init (str);
}
void
mpw_progress (int n)
{
SpinCursor (32);
}
void
mpw_progress_measured (int n, char *file, int line)
{
if (measure_spin)
warn_if_spin_delay (file, line);
SpinCursor (32);
if (measure_spin)
record_for_spin_delay (file, line);
}
void
mpw_end_progress (char *str, char *file, int line)
{
long i, delay, count = 0, sum = 0, avgdelay, spinrate;
long curpower = 0, curgroup = 0;
/* Warn if it's been a while since the last spin. */
if (measure_spin)
warn_if_spin_delay (file, line);
/* Dump all the nonzero delay counts and an approximation of the delay. */
if (dump_spin_data && delay_counts != NULL)
{
for (i = 0; i < numbuckets; ++i)
{
delay = (i + 1) * bucket_size;
sum += delay_counts[i] * (i + 1);
count += delay_counts[i];
if (delay <= (1 << curpower))
{
curgroup += delay_counts[i];
}
else
{
if (curgroup > 0)
fprintf (stderr,
"# %s: %d delays between %ld.%06ld and %ld.%06ld sec\n",
(str ? str : ""),
curgroup,
(1 << curpower) / 1000000,
(1 << curpower) % 1000000,
(1 << (curpower + 1)) / 1000000,
(1 << (curpower + 1)) % 1000000);
++curpower;
curgroup = 0;
}
}
if (count > 0)
{
avgdelay = (sum * bucket_size) / count;
spinrate = 1000000 / avgdelay;
fprintf (stderr, "# %s: Average spin rate is %d times/sec\n",
(str ? str : ""), spinrate);
}
}
}
#ifdef PROGRESS_TEST
/* Test program. */
main ()
{
int i, j;
double x = 1.0, y = 2.4;
long start = Microseconds (), tm; FIXME
START_PROGRESS ("hi", 0);
for (i = 0; i < 1000; ++i)
{
PROGRESS (1);
for (j = 0; j < (i * 100); ++j)
{
x += (x * y) / j;
}
}
END_PROGRESS ("hi");
tm = Microseconds () - start;
printf ("Total time is %d.%d secs\n", tm / 1000000, tm % 1000000);
}
#endif
#ifdef USE_MW_HEADERS
/* Empty definitions for Metrowerks' SIOUX console library. */
#ifndef __CONSOLE__
#include <console.h>
#endif
short
InstallConsole(short fd)
{
#pragma unused (fd)
return 0;
}
void
RemoveConsole(void)
{
}
long
WriteCharsToConsole(char *buf, long n)
{
#pragma unused (buf, n)
return 0;
}
long ReadCharsFromConsole(char *buf, long n)
{
#pragma unused (buf, n)
return 0;
}
extern char *
__ttyname(long fd)
{
static char *__devicename = "null device";
if (fd >= 0 && fd <= 2)
return (__devicename);
return NULL;
}
#endif
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