Remove src/m/*.

* configure.in: Remove all mention of src/m/*.
(machine, machfile, M_FILE, config_machfile, and_machfile): Remove.
All uses removed.
(BITS_PER_CHAR, BITS_PER_SHORT, BITS_PER_INT, BITS_PER_LONG)
(BITS_PER_LONG_LONG): Move to src/lisp.h.
* lib/makefile.w32-in: Remove dependencies on
$(EMACS_ROOT)/src/m/intel386.h.
* make-dist: Don't make links to src/m.
* admin/CPP-DEFINES: Do not mention src/m/*.h.
(BITS_PER_EMACS_INT, BITS_PER_LONG, BITS_PER_CHAR)
(BITS_PER_SHORT, BITS_PER_INT): Remove.
* admin/MAINTAINERS: Remove src/m/.
* lib-src/makefile.w32-in: Remove dependencies on
$(EMACS_ROOT)/src/m/intel386.h.
* msdos/mainmake.v2 (TAGS tags): Don't look at $(CURDIR)/src/m/intel386.h.
* nt/config.nt: Do not include "m/intel386.h"; file was removed.
(BITS_PER_CHAR, BITS_PER_SHORT, BITS_PER_INT, BITS_PER_LONG):
Move to src/lisp.h.
(EMACS_INT_MAX): New macro.
This directory predates autoconf and is no longer needed nowadays.
Move its few remaining bits of functionality to where they're needed.
* src/m/README, src/m/alpha.h, src/m/amdx86-64.h, src/m/ia64.h, src/m/ibmrs6000.h:
* src/m/ibms390x.h, src/m/intel386.h, src/m/m68k.h, src/m/macppc.h:
* src/m/sparc.h, src/m/template.h: Remove.
* src/Makefile.in (M_FILE): Remove.  All uses removed.
* src/alloc.c (POINTERS_MIGHT_HIDE_IN_OBJECTS):
* src/lisp.h (USE_LSB_TAG):
* src/mem-limits.h (EXCEEDS_LISP_PTR):
Use VAL_MAX, not VALBITS, in #if.
* src/lisp.h (EMACS_INT_MAX): New macro, useful in #if.
(EMACS_UINT): Define unconditionally now.
(BITS_PER_CHAR, BITS_PER_SHORT, BITS_PER_INT, BITS_PER_LONG)
(BITS_PER_EMACS_INT): New constants, replacing
what used to be in config.h, but not useful in #if.
(GCTYPEBITS, VALBITS): Define unconditionally, since m/* files don't
define them any more.
(VAL_MAX): New macro.
(VALMASK): Use it.
* src/puresize.h (PURESIZE_RATIO): Use EMACS_INT_MAX, not
BITS_PER_EMACS_INT, in #if.
* src/s/aix4-2.h (BROKEN_FIONREAD, BROKEN_SIGAIO, BROKEN_SIGPTY)
(BROKEN_SIGPOLL): Move here from m/ibmrs6000.h, which was removed.
* src/s/gnu-linux.h (ULIMIT_BREAK_VALUE) [__i386__]:
* src/s/ms-w32.h (DATA_START):
Move here from removed file m/intel386.h.
* src/s/gnu.h (NLIST_STRUCT): Remove undef; 'configure' does this.
* src/s/irix6-5.h (_LP64): Remove; lisp.h no longer needs this.

22 files changed, 86 insertions, 385 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 3054f4a284f..784544bae6d 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,35 @@
+2012-05-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Remove src/m/*.
+        This directory predates autoconf and is no longer needed nowadays.
+        Move its few remaining bits of functionality to where they're needed.
+        * m/README, m/alpha.h, m/amdx86-64.h, m/ia64.h, m/ibmrs6000.h:
+        * m/ibms390x.h, m/intel386.h, m/m68k.h, m/macppc.h, m/sparc.h:
+        * m/template.h: Remove.
+        * Makefile.in (M_FILE): Remove.  All uses removed.
+        * alloc.c (POINTERS_MIGHT_HIDE_IN_OBJECTS):
+        * lisp.h (USE_LSB_TAG):
+        * mem-limits.h (EXCEEDS_LISP_PTR):
+        Use VAL_MAX, not VALBITS, in #if.
+        * lisp.h (EMACS_INT_MAX): New macro, useful in #if.
+        (EMACS_UINT): Define unconditionally now.
+        (BITS_PER_CHAR, BITS_PER_SHORT, BITS_PER_INT, BITS_PER_LONG)
+        (BITS_PER_EMACS_INT): New constants, replacing
+        what used to be in config.h, but not useful in #if.
+        (GCTYPEBITS, VALBITS): Define unconditionally, since m/* files don't
+        define them any more.
+        (VAL_MAX): New macro.
+        (VALMASK): Use it.
+        * puresize.h (PURESIZE_RATIO): Use EMACS_INT_MAX, not
+        BITS_PER_EMACS_INT, in #if.
+        * s/aix4-2.h (BROKEN_FIONREAD, BROKEN_SIGAIO, BROKEN_SIGPTY)
+        (BROKEN_SIGPOLL): Move here from m/ibmrs6000.h, which was removed.
+        * s/gnu-linux.h (ULIMIT_BREAK_VALUE) [__i386__]:
+        * s/ms-w32.h (DATA_START):
+        Move here from removed file m/intel386.h.
+        * s/gnu.h (NLIST_STRUCT): Remove undef; 'configure' does this.
+        * s/irix6-5.h (_LP64): Remove; lisp.h no longer needs this.
+
 2012-05-21  Paul Eggert  <eggert@cs.ucla.edu>
 
         Assume C89 or later.
diff --git a/src/Makefile.in b/src/Makefile.in
index dd667ea60a3..27199578fc0 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -56,9 +56,8 @@ lwlibdir = ../lwlib
 lispdir = ../lisp
 
 # Configuration files for .o files to depend on.
-M_FILE = @M_FILE@
 S_FILE = @S_FILE@
-config_h = config.h $(M_FILE) $(S_FILE)
+config_h = config.h $(S_FILE)
 
 bootstrap_exe = $(abs_builddir)/bootstrap-emacs$(EXEEXT)
 
@@ -534,10 +533,10 @@ extraclean: distclean
 ctagsfiles1 = [xyzXYZ]*.[hcm]
 ctagsfiles2 = [a-wA-W]*.[hcm]
 
-TAGS: $(srcdir)/$(ctagsfiles1) $(srcdir)/$(ctagsfiles2) $(M_FILE) $(S_FILE)
+TAGS: $(srcdir)/$(ctagsfiles1) $(srcdir)/$(ctagsfiles2) $(S_FILE)
         ../lib-src/etags --include=TAGS-LISP --include=$(lwlibdir)/TAGS \
           --regex='/[   ]*DEFVAR_[A-Z_  (]+"\([^"]+\)"/' \
-          $(srcdir)/$(ctagsfiles1) $(srcdir)/$(ctagsfiles2) $(M_FILE) $(S_FILE)
+          $(srcdir)/$(ctagsfiles1) $(srcdir)/$(ctagsfiles2) $(S_FILE)
 frc:
 TAGS-LISP: frc
         $(MAKE) -f $(lispdir)/Makefile TAGS-LISP ETAGS=../lib-src/etags
diff --git a/src/alloc.c b/src/alloc.c
index 3601c256c41..1f422a6d3b0 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4297,8 +4297,8 @@ mark_maybe_pointer (void *p)
    wider than a pointer might allocate a Lisp_Object in non-adjacent halves.
    If USE_LSB_TAG, the bottom half is not a valid pointer, but it should
    suffice to widen it to to a Lisp_Object and check it that way.  */
-#if defined USE_LSB_TAG || UINTPTR_MAX >> VALBITS != 0
-# if !defined USE_LSB_TAG && UINTPTR_MAX >> VALBITS >> GCTYPEBITS != 0
+#if defined USE_LSB_TAG || VAL_MAX < UINTPTR_MAX
+# if !defined USE_LSB_TAG && VAL_MAX < UINTPTR_MAX >> GCTYPEBITS
   /* If tag bits straddle pointer-word boundaries, neither mark_maybe_pointer
      nor mark_maybe_object can follow the pointers.  This should not occur on
      any practical porting target.  */
diff --git a/src/lisp.h b/src/lisp.h
index fd5219adf4c..bb9e6ed3825 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -41,25 +41,36 @@ extern void check_cons_list (void);
    Build with CFLAGS='-DWIDE_EMACS_INT' to try them out.  */
 /* #undef WIDE_EMACS_INT */
 
-/* These are default choices for the types to use.  */
+/* EMACS_INT - signed integer wide enough to hold an Emacs value
+   EMACS_INT_MAX - maximum value of EMACS_INT; can be used in #if
+   pI - printf length modifier for EMACS_INT
+   EMACS_UINT - unsigned variant of EMACS_INT */
 #ifndef EMACS_INT
-# if BITS_PER_LONG < BITS_PER_LONG_LONG && defined WIDE_EMACS_INT
+# if LONG_MAX < LLONG_MAX && defined WIDE_EMACS_INT
 #  define EMACS_INT long long
-#  define BITS_PER_EMACS_INT BITS_PER_LONG_LONG
+#  define EMACS_INT_MAX LLONG_MAX
 #  define pI "ll"
-# elif BITS_PER_INT < BITS_PER_LONG
+# elif INT_MAX < LONG_MAX
 #  define EMACS_INT long
-#  define BITS_PER_EMACS_INT BITS_PER_LONG
+#  define EMACS_INT_MAX LONG_MAX
 #  define pI "l"
 # else
 #  define EMACS_INT int
-#  define BITS_PER_EMACS_INT BITS_PER_INT
+#  define EMACS_INT_MAX INT_MAX
 #  define pI ""
 # endif
 #endif
-#ifndef EMACS_UINT
-# define EMACS_UINT unsigned EMACS_INT
-#endif
+#define EMACS_UINT unsigned EMACS_INT
+
+/* Number of bits in some machine integer types.  */
+enum
+  {
+    BITS_PER_CHAR      = CHAR_BIT,
+    BITS_PER_SHORT     = CHAR_BIT * sizeof (short),
+    BITS_PER_INT       = CHAR_BIT * sizeof (int),
+    BITS_PER_LONG      = CHAR_BIT * sizeof (long int),
+    BITS_PER_EMACS_INT = CHAR_BIT * sizeof (EMACS_INT)
+  };
 
 /* printmax_t and uprintmax_t are types for printing large integers.
    These are the widest integers that are supported for printing.
@@ -164,13 +175,13 @@ extern int suppress_checking EXTERNALLY_VISIBLE;
    variable VAR of type TYPE with the added requirement that it be
    TYPEBITS-aligned.  */
 
-#ifndef GCTYPEBITS
 #define GCTYPEBITS 3
-#endif
-
-#ifndef VALBITS
 #define VALBITS (BITS_PER_EMACS_INT - GCTYPEBITS)
-#endif
+
+/* The maximum value that can be stored in a EMACS_INT, assuming all
+   bits other than the type bits contribute to a nonnegative signed value.
+   This can be used in #if, e.g., '#if VAL_MAX < UINTPTR_MAX' below.  */
+#define VAL_MAX (EMACS_INT_MAX >> (GCTYPEBITS - 1))
 
 #ifndef NO_DECL_ALIGN
 # ifndef DECL_ALIGN
@@ -195,12 +206,12 @@ extern int suppress_checking EXTERNALLY_VISIBLE;
      || defined DARWIN_OS || defined __sun)
 /* We also need to be able to specify mult-of-8 alignment on static vars.  */
 # if defined DECL_ALIGN
-/* On hosts where VALBITS is greater than the pointer width in bits,
+/* On hosts where pointers-as-ints do not exceed VAL_MAX,
    USE_LSB_TAG is:
     a. unnecessary, because the top bits of an EMACS_INT are unused, and
     b. slower, because it typically requires extra masking.
    So, define USE_LSB_TAG only on hosts where it might be useful.  */
-#  if UINTPTR_MAX >> VALBITS != 0
+#  if VAL_MAX < UINTPTR_MAX
 #   define USE_LSB_TAG
 #  endif
 # endif
@@ -479,7 +490,7 @@ enum pvec_type
 
 #else  /* not USE_LSB_TAG */
 
-#define VALMASK ((((EMACS_INT) 1) << VALBITS) - 1)
+#define VALMASK VAL_MAX
 
 /* One need to override this if there must be high bits set in data space
    (doing the result of the below & ((1 << (GCTYPE + 1)) - 1) would work
diff --git a/src/m/README b/src/m/README
deleted file mode 100644
index ad91167648e..00000000000
--- a/src/m/README
+++ /dev/null
@@ -1,7 +0,0 @@
-This directory contains C header files containing machine-specific
-definitions.  Each file describes a particular machine.  The emacs
-configuration script edits ../config.h to include the appropriate one of
-these files, and then each emacs source file includes config.h.
-
-template.h is a generic template for machine descriptions; it
-describes the parameters a machine file can specify.
diff --git a/src/m/alpha.h b/src/m/alpha.h
deleted file mode 100644
index 2a97a3d5b0c..00000000000
--- a/src/m/alpha.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/* Machine description file for the alpha chip.
-
-Copyright (C) 1994, 1997, 1999, 2001-2012  Free Software Foundation, Inc.
-
-Author: Rainer Schoepf
-(according to authors.el)
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#ifndef _LP64
-#define _LP64 /* This doesn't appear to be necessary on OSF 4/5  -- fx.  */
-#endif
-
-/* Now define a symbol for the cpu type, if your compiler
-   does not define it automatically.  */
-/* __alpha defined automatically */
-
-
-#ifdef __ELF__
-
-#if !defined (GNU_LINUX) && !defined (__NetBSD__)
-#define DATA_START    0x140000000
-#endif
-
-#else  /* not __ELF__ */
-
-/* Describe layout of the address space in an executing process.  */
-#define DATA_START    0x140000000
-
-#endif /* __ELF__ */
-
-/* On the Alpha it's best to avoid including TERMIO since struct
-   termio and struct termios are mutually incompatible.  */
-#define NO_TERMIO
-
-/* Many Alpha implementations (e.g. gas 2.8) can't handle DBL_MIN:
-   they generate code that uses a signaling NaN instead of DBL_MIN.
-   Define DBL_MIN_REPLACEMENT to be the next value larger than DBL_MIN:
-   this avoids the assembler bug.  */
-#define DBL_MIN_REPLACEMENT 2.2250738585072019e-308
diff --git a/src/m/amdx86-64.h b/src/m/amdx86-64.h
deleted file mode 100644
index f0482c733f9..00000000000
--- a/src/m/amdx86-64.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* machine description file for AMD x86-64.
-
-Copyright (C) 2002-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#define BITS_PER_LONG           64
-#define BITS_PER_EMACS_INT      64
-
-/* Now define a symbol for the cpu type, if your compiler
-   does not define it automatically:
-   Ones defined so far include vax, m68000, ns16000, pyramid,
-   orion, tahoe, APOLLO and many others */
-/* __x86_64 defined automatically.  */
-
-/* Define the type to use.  */
-#define EMACS_INT               long
-#define pI                      "l"
-#define EMACS_UINT              unsigned long
-
-/* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
-#undef DATA_SEG_BITS
diff --git a/src/m/ia64.h b/src/m/ia64.h
deleted file mode 100644
index 47df94cedd0..00000000000
--- a/src/m/ia64.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* machine description file for the IA-64 architecture.
-
-Copyright (C) 2000-2012  Free Software Foundation, Inc.
-
-     Contributed by David Mosberger <davidm@hpl.hp.com>
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#define BITS_PER_LONG           64
-#define BITS_PER_EMACS_INT      64
-
-/* Now define a symbol for the cpu type, if your compiler
-   does not define it automatically.  */
-/* __ia64__ defined automatically */
-
-/* Define the type to use.  */
-#define EMACS_INT               long
-#define pI                      "l"
-#define EMACS_UINT              unsigned long
diff --git a/src/m/ibmrs6000.h b/src/m/ibmrs6000.h
deleted file mode 100644
index 9798ad2d3d7..00000000000
--- a/src/m/ibmrs6000.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/* R2 AIX machine/system dependent defines
-
-Copyright (C) 1988, 2001-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-
-/* The data segment in this machine always starts at address 0x20000000.
-   An address of data cannot be stored correctly in a Lisp object;
-   we always lose the high bits.  We must tell XPNTR to add them back.  */
-#define DATA_START 0x20000000
-#define DATA_SEG_BITS 0x20000000
-
-#ifndef NLIST_STRUCT
-/* AIX supposedly doesn't use this interface, but on the RS/6000
-   it apparently does.  */
-#define NLIST_STRUCT
-#endif
-
-#undef ADDR_CORRECT
-#define ADDR_CORRECT(x) ((int)(x))
-
-/*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
-#define BROKEN_FIONREAD
-/* As we define BROKEN_FIONREAD, SIGIO will be undefined in systty.h.
-   But, on AIX, SIGAIO, SIGPTY, and SIGPOLL are defined as SIGIO,
-   which causes compilation error at init_signals in sysdep.c.  So, we
-   define these macros so that syssignal.h detects them and undefine
-   SIGAIO, SIGPTY and SIGPOLL.  */
-#define BROKEN_SIGAIO
-#define BROKEN_SIGPTY
-#define BROKEN_SIGPOLL
-
diff --git a/src/m/ibms390x.h b/src/m/ibms390x.h
deleted file mode 100644
index aa652a8206a..00000000000
--- a/src/m/ibms390x.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Machine description file for IBM S390 in 64-bit mode
-
-Copyright (C) 2002-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#define BITS_PER_LONG 64
-#define BITS_PER_EMACS_INT 64
-
-/* Define the type to use.  */
-#define EMACS_INT long
-#define pI "l"
-#define EMACS_UINT unsigned long
-
-/* On the 64 bit architecture, we can use 60 bits for addresses */
-#define VALBITS         60
-
-/* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
-#define XPNTR(a) XUINT (a)
diff --git a/src/m/intel386.h b/src/m/intel386.h
deleted file mode 100644
index 78a43e92c21..00000000000
--- a/src/m/intel386.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* Machine description file for intel 386.
-
-Copyright (C) 1987, 2001-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-
-#ifdef WINDOWSNT
-#define DATA_START      get_data_start ()
-#endif
-
-#ifdef GNU_LINUX
-/* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */
-/* we cannot get the maximum address for brk */
-#define ULIMIT_BREAK_VALUE (32*1024*1024)
-#endif
diff --git a/src/m/m68k.h b/src/m/m68k.h
deleted file mode 100644
index 120a2bad293..00000000000
--- a/src/m/m68k.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Machine description file for generic Motorola 68k.
-
-Copyright (C) 1985, 1995, 2001-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* Now define a symbol for the cpu type, if your compiler
-   does not define it automatically.  */
-#ifndef m68k
-#define m68k
-#endif
-
-#ifdef GNU_LINUX
-#ifdef __ELF__
-#define DATA_SEG_BITS 0x80000000
-#endif
-
-#endif
-
diff --git a/src/m/macppc.h b/src/m/macppc.h
deleted file mode 100644
index 0303ead25d6..00000000000
--- a/src/m/macppc.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* machine description file For the powerpc Macintosh.
-
-Copyright (C) 1994, 2001-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#ifdef _ARCH_PPC64
-#ifndef _LP64
-#define _LP64
-#endif
-#endif
diff --git a/src/m/sparc.h b/src/m/sparc.h
deleted file mode 100644
index 27b6070ba87..00000000000
--- a/src/m/sparc.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/* machine description file for Sun 4 SPARC.
-
-Copyright (C) 1987, 2001-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* __sparc__ is defined by the compiler by default.  */
-
-#ifdef __arch64__               /* GCC, 64-bit ABI.  */
-
-#define BITS_PER_LONG 64
-
-#ifndef _LP64
-#define _LP64 /* Done on Alpha -- not sure if it should be here.  -- fx */
-#endif
-
-#endif  /* __arch64__ */
diff --git a/src/m/template.h b/src/m/template.h
deleted file mode 100644
index 5f1a46c86e1..00000000000
--- a/src/m/template.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/* machine description file template.
-
-Copyright (C) 1985-1986, 2001-2012  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs 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 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* Now define a symbol for the cpu type, if your compiler
-   does not define it automatically.
-   Ones defined so far include m68k and many others */
-
-/* After adding support for a new machine, modify the large case
-   statement in configure.in to recognize reasonable
-   configuration names, and add a description of the system to
-   `etc/MACHINES'.
-
-   Check for any tests of $machine in configure.in, and add an entry
-   for the new machine if needed.
-
-   If you've just fixed a problem in an existing configuration file,
-   you should also check `etc/MACHINES' to make sure its descriptions
-   of known problems in that configuration should be updated.  */
diff --git a/src/mem-limits.h b/src/mem-limits.h
index 244592a9768..1fd53b472f3 100644
--- a/src/mem-limits.h
+++ b/src/mem-limits.h
@@ -34,7 +34,7 @@ extern int etext;
 #endif
 
 extern char *start_of_data (void);
-#if defined USE_LSB_TAG || UINTPTR_MAX >> VALBITS == 0
+#if defined USE_LSB_TAG || UINTPTR_MAX <= VAL_MAX
 #define EXCEEDS_LISP_PTR(ptr) 0
 #elif defined DATA_SEG_BITS
 #define EXCEEDS_LISP_PTR(ptr) \
diff --git a/src/puresize.h b/src/puresize.h
index e854dc585e8..185d2a76ae0 100644
--- a/src/puresize.h
+++ b/src/puresize.h
@@ -45,7 +45,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Increase BASE_PURESIZE by a ratio depending on the machine's word size.  */
 #ifndef PURESIZE_RATIO
-#if BITS_PER_EMACS_INT > 32
+#if EMACS_INT_MAX >> 31 != 0
 #define PURESIZE_RATIO 10/6     /* Don't surround with `()'. */
 #else
 #define PURESIZE_RATIO 1
diff --git a/src/s/aix4-2.h b/src/s/aix4-2.h
index 354ffda0988..cacfdc7ed63 100644
--- a/src/s/aix4-2.h
+++ b/src/s/aix4-2.h
@@ -76,6 +76,17 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
    to avoid a crash just use the Emacs implementation for that function.  */
 #define BROKEN_GET_CURRENT_DIR_NAME 1
 
+/*** BUILD 9008 - FIONREAD problem still exists in X-Windows. ***/
+#define BROKEN_FIONREAD
+/* As we define BROKEN_FIONREAD, SIGIO will be undefined in systty.h.
+   But, on AIX, SIGAIO, SIGPTY, and SIGPOLL are defined as SIGIO,
+   which causes compilation error at init_signals in sysdep.c.  So, we
+   define these macros so that syssignal.h detects them and undefine
+   SIGAIO, SIGPTY and SIGPOLL.  */
+#define BROKEN_SIGAIO
+#define BROKEN_SIGPTY
+#define BROKEN_SIGPOLL
+
 /* Conservative garbage collection has not been tested, so for now
    play it safe and stick with the old-fashioned way of marking.  */
 #define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE
diff --git a/src/s/gnu-linux.h b/src/s/gnu-linux.h
index d04ea33068a..409d0205520 100644
--- a/src/s/gnu-linux.h
+++ b/src/s/gnu-linux.h
@@ -157,3 +157,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #else
 #define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE
 #endif
+
+#ifdef __i386__
+/* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */
+/* we cannot get the maximum address for brk */
+# define ULIMIT_BREAK_VALUE (32*1024*1024)
+#endif
diff --git a/src/s/gnu.h b/src/s/gnu.h
index a09e0e824c9..cd72164a520 100644
--- a/src/s/gnu.h
+++ b/src/s/gnu.h
@@ -24,8 +24,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #undef SYSTEM_TYPE
 #define SYSTEM_TYPE "gnu"
 
-#undef NLIST_STRUCT
-
 #define SIGNALS_VIA_CHARACTERS
 
 /* libc defines data_start.  */
diff --git a/src/s/irix6-5.h b/src/s/irix6-5.h
index e5d90c1bd5d..e5479c3b8d3 100644
--- a/src/s/irix6-5.h
+++ b/src/s/irix6-5.h
@@ -85,10 +85,6 @@ char *_getpty();
 
 #define NARROWPROTO 1
 
-#if _MIPS_SZLONG == 64          /* -mabi=64 (gcc) or -64 (MIPSpro) */
-#define _LP64                   /* lisp.h takes care of the rest */
-#endif /* _MIPS_SZLONG */
-
 #undef SA_RESTART
 
 #undef TIOCSIGSEND              /* defined in usg5-4-common.h */
diff --git a/src/s/ms-w32.h b/src/s/ms-w32.h
index 63fc2f1f62b..f88128b27aa 100644
--- a/src/s/ms-w32.h
+++ b/src/s/ms-w32.h
@@ -381,6 +381,8 @@ extern int getloadavg (double *, int);
 /* We need a little extra space, see ../../lisp/loadup.el.  */
 #define SYSTEM_PURESIZE_EXTRA 50000
 
+#define DATA_START      get_data_start ()
+
 /* For unexec to work on Alpha systems, we need to put Emacs'
    initialized data into a separate section from the CRT initialized
    data (because the Alpha linker freely reorders data variables, even