initial commit

1 files changed, 134 insertions, 0 deletions

diff --git a/gcc/config/m68k/aux-crt1.c b/gcc/config/m68k/aux-crt1.c
new file mode 100755
index 0000000..9ee529b
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+++ b/gcc/config/m68k/aux-crt1.c
@@ -0,0 +1,134 @@
+/* Startup code for A/UX
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+This file is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file with other programs, and to distribute
+those programs without any restriction coming from the use of this
+file.  (The General Public License restrictions do apply in other
+respects; for example, they cover modification of the file, and
+distribution when not linked into another program.)
+
+This file 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
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* As a special exception, if you link this library with files
+   compiled with GCC to produce an executable, this does not cause
+   the resulting executable to be covered by the GNU General Public License.
+   This exception does not however invalidate any other reasons why
+   the executable file might be covered by the GNU General Public License.  */
+
+/* This file is compiled three times to produce crt1.o, mcrt1.o, and
+   maccrt1.o.  The final two are created by defining MCRT1 and MACCRT1
+   respectively.  */
+
+#include <stdlib.h>
+#ifdef MCRT1
+#include <unistd.h>
+#include <mon.h>
+#endif
+
+/* Extern function declarations */
+
+extern void initfpu(void);
+extern void __istart(void);
+extern void __compatmode(void);
+extern void _cleanup(void);
+extern int main(int, char **, char **);
+extern void exit(int) __attribute__((noreturn));
+extern void _exit(int) __attribute__((noreturn));
+
+#ifdef MACCRT1
+extern void InitMac(void);
+#endif
+#ifdef MCRT1
+static void monitor_start(void);
+#endif
+
+/* Global variables */
+
+char **environ;
+char *__splimit;			/* address of top of stack */
+
+
+/* Initialize system and run */
+
+void _start() __attribute__((noreturn));
+void _start()
+{
+  register int *fp __asm__("%a6");
+  register char *d0 __asm__("%d0");
+  char **argv;
+  int argc;
+
+  __splimit = d0;
+  argc = fp[1];
+  argv = (char **)&fp[2];
+  environ = &argv[argc+1];
+
+  initfpu();
+  __istart();
+  __compatmode();
+
+  atexit(_cleanup);
+#ifdef MCRT1
+  monitor_start();
+#endif
+#ifdef MACCRT1
+  InitMac();
+#endif
+
+  exit(main(argc, argv, environ));
+}
+
+
+#ifdef MCRT1
+/* Start/Stop program monitor */
+
+extern void monitor(void *, void *, WORD *, int, int);
+
+static WORD *monitor_buffer;
+
+static void monitor_cleanup(void)
+{
+  monitor(NULL, NULL, NULL, 0, 0);
+  free(monitor_buffer);
+}
+
+static void monitor_start(void)
+{
+  extern int etext;
+  extern int stext __asm__(".text");
+
+  /* Choice of buffer size should be "no more than a few times
+     smaller than the program size" -- I don't believe that there
+     are any (useful) functions smaller than two insns (4 bytes)
+     so that is the scale factor used here */
+  int len = (&etext - &stext + 1) / 4;
+
+  monitor_buffer = (WORD *)calloc(len, sizeof(WORD));
+  if (monitor_buffer == NULL)
+    {
+      static const char msg[] = "mcrt1: could not allocate monitor buffer\n";
+      write(2, msg, sizeof(msg)-1);
+      _exit(-1);
+    }
+
+  /* I'm not sure why the count cap at 600 -- but that is what A/UX does */
+  monitor(&stext, &etext, monitor_buffer, len, 600);
+
+  atexit(monitor_cleanup);
+}
+#endif /* MCRT1 */