Mach 3 support.

	* config.bfd (m88*-*-mach3*, mips*-dec-mach3*, mips*-*-mach3*):
	New targets.
	* configure.host (i[34]86-*-mach3*, ns32k-*-mach3*): Recognize
	"mach3" instead of "mach".
	(m88*-*-mach3*, mips*-dec-mach3*, mips*-*-mach3*): New hosts.
	* targets.c (m88kmach3_vec): New target vector.
	(bfd_target_vector): Add i386mach3_vec and m88kmach3_vec, but
	inside #if 0.
	* aoutx.h (some_aout_object_p) [MACH]: Recognize executables by
	checking for execute permission, instead of looking at entry
	point.
	* i386mach3.c: Update, define MACH, N_TXTOFF, N_TXTADDR,
	N_SHARED_LIB, don't include aout/*.h files, etc.
	* m88kmach3.c: New file, m88k Mach 3 target.
	* config/m88k-mach3.mt,	config/mips-mach3.mt: New files, target
	makefile fragments.
	* config/i386mach3.mh, config/m88kmach3.mh, config/mipsmach3.mh:
	New files, host	makefile fragments.
	* hosts/m88kmach3.h, hosts/mipsmach3.h: New files, host definitions.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index eadf7cf..fb43979 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,26 @@
+Tue Jul  5 13:26:02 1994  Stan Shebs  (shebs@andros.cygnus.com)
+
+       Mach 3 support.
+       * config.bfd (m88*-*-mach3*, mips*-dec-mach3*, mips*-*-mach3*):
+       New targets.
+       * configure.host (i[34]86-*-mach3*, ns32k-*-mach3*): Recognize
+       "mach3" instead of "mach".
+       (m88*-*-mach3*, mips*-dec-mach3*, mips*-*-mach3*): New hosts.
+       * targets.c (m88kmach3_vec): New target vector.
+       (bfd_target_vector): Add i386mach3_vec and m88kmach3_vec, but
+       inside #if 0.
+       * aoutx.h (some_aout_object_p) [MACH]: Recognize executables by
+       checking for execute permission, instead of looking at entry
+       point.
+       * i386mach3.c: Update, define MACH, N_TXTOFF, N_TXTADDR,
+       N_SHARED_LIB, don't include aout/*.h files, etc.
+       * m88kmach3.c: New file, m88k Mach 3 target.
+       * config/m88k-mach3.mt, config/mips-mach3.mt: New files, target
+       makefile fragments.
+       * config/i386mach3.mh, config/m88kmach3.mh, config/mipsmach3.mh:
+       New files, host makefile fragments.
+       * hosts/m88kmach3.h, hosts/mipsmach3.h: New files, host definitions.
+
 Tue Jul  5 13:56:52 1994  Ian Lance Taylor  (ian@sanguine.cygnus.com)
 
        * elfcode.h (swap_out_syms): Get alignment of common symbol from

diff --git a/bfd/aoutx.h b/bfd/aoutx.h
index 42ec797..c53b446 100644 (file)
--- a/bfd/aoutx.h
+++ b/bfd/aoutx.h
@@ -481,15 +481,12 @@ NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
   obj_datasec (abfd)->_raw_size = execp->a_data;
   obj_bsssec (abfd)->_raw_size = execp->a_bss;
 
-  /* If this object is dynamically linked, we assume that both
-     sections have relocs.  This does no real harm, even though it may
-     not be true.  */
   obj_textsec (abfd)->flags =
-    (execp->a_trsize != 0 || (abfd->flags & DYNAMIC) != 0
+    (execp->a_trsize != 0
      ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
      : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
   obj_datasec (abfd)->flags =
-    (execp->a_drsize != 0 || (abfd->flags & DYNAMIC) != 0
+    (execp->a_drsize != 0
      ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
      : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
   obj_bsssec (abfd)->flags = SEC_ALLOC;
@@ -553,6 +550,19 @@ NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
 
   result = (*callback_to_real_object_p)(abfd);
 
+#ifdef MACH
+  /* Stat the file to decide whether or not it's executable.
+     Many Mach programs use text at very unconventional addresses,
+     including the emulator, so the standard heuristic is incorrect.  */
+  {
+    struct stat st;
+
+    stat (abfd->filename, &st);
+    /* Are any exec 'x' bits on? */
+    if (st.st_mode & 0111)
+      abfd->flags |= EXEC_P;
+  }
+#else /* ! MACH */
   /* Now that the segment addresses have been worked out, take a better
      guess at whether the file is executable.  If the entry point
      is within the text segment, assume it is.  (This makes files
@@ -564,6 +574,7 @@ NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
   if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
       (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
     abfd->flags |= EXEC_P;
+#endif /* MACH */
   if (result)
     {
 #if 0 /* These should be set correctly anyways.  */

diff --git a/bfd/hosts/m88kmach3.h b/bfd/hosts/m88kmach3.h
new file mode 100644 (file)
index 0000000..c970fe0
--- /dev/null
+++ b/bfd/hosts/m88kmach3.h
@@ -0,0 +1,19 @@
+#include "hosts/std-host.h"
+
+#include <machine/vmparam.h>
+#include <sys/param.h>
+
+#ifndef MACH
+#define MACH
+#endif
+
+#undef UPAGES
+#define UPAGES 3
+
+#define        HAVE_STRERROR
+
+#define        HOST_PAGE_SIZE          NBPG
+#define        HOST_SEGMENT_SIZE       NBPG
+#define        HOST_MACHINE_ARCH       bfd_arch_m88k
+#define        HOST_TEXT_START_ADDR    USRTEXT
+#define        HOST_STACK_END_ADDR     USRSTACK

diff --git a/bfd/hosts/mipsmach3.h b/bfd/hosts/mipsmach3.h
new file mode 100644 (file)
index 0000000..48bc7c9
--- /dev/null
+++ b/bfd/hosts/mipsmach3.h
@@ -0,0 +1,12 @@
+#include "hosts/std-host.h"
+
+#include <machine/vmparam.h>
+#include <machine/machparam.h>
+#include <sys/param.h>
+
+#define        HOST_PAGE_SIZE          NBPG
+/* #define     HOST_SEGMENT_SIZE       NBPG  */
+#define        HOST_MACHINE_ARCH       bfd_arch_mips
+#define        HOST_TEXT_START_ADDR    USRTEXT
+#define        HOST_DATA_START_ADDR    USRDATA
+#define        HOST_STACK_END_ADDR     USRSTACK

diff --git a/bfd/m88kmach3.c b/bfd/m88kmach3.c
new file mode 100644 (file)
index 0000000..a076764
--- /dev/null
+++ b/bfd/m88kmach3.c
@@ -0,0 +1,41 @@
+/* BFD back-end for Motorola m88k a.out (Mach 3) binaries.
+   Copyright (C) 1990, 1991, 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program 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 of the License, or
+(at your option) any later version.
+
+This program 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; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifndef MACH
+#define MACH
+#endif
+
+#define        PAGE_SIZE       (4096*2)
+#define SEGMENT_SIZE   0x20000
+#define TEXT_START_ADDR        0
+#define BYTES_IN_WORD  4
+#define N_HEADER_IN_TEXT(x)    1               /* (N_MAGIG(x) == ZMAGIC) */
+
+#define N_TXTSIZE(x)   ((x).a_text)
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libaout.h"
+
+#define DEFAULT_ARCH bfd_arch_m88k
+#define MY(OP) CAT(m88kmach3_,OP)
+#define TARGETNAME "a.out-m88k-mach3"
+
+#include "aout-target.h"