ARM: Fix unsigned modulo.

* lib/arm-mes/arm.M1 (mov____%esp,%r3): New macro. * module/mescc/armv4/as.scm (armv4:r0%r1): Use it to avoid overwriting %r0 before caling __mesabi_uldiv.
STUK!
2022-09-12 09:50:57 +02:00 · 2022-09-12 09:50:57 +02:00 · 2022-09-12 09:50:57 +02:00 · 2022-09-12 09:50:57 +02:00 · 2022-09-12 09:50:57 +02:00 · 2022-09-12 09:50:57 +02:00
75 changed files with 813 additions and 842 deletions
--- a/2
+++ b/2
@ -22,7 +22,7 @@ to your config.scm and run guix system reconfigure.

 For example (note: ARM is no longer a 'port', see HACKING)
   #+BEGIN_SRC bash
-   guix shell --system=armhf-linux --pure bash coreutils diffutils findutils gawk gcc-toolchain@7 grep git guile@2.2 gzip help2man make mescc-tools nyacc openssh-sans-x pkg-config sed tar texinfo
+   guix shell --system=armhf-linux --pure bash coreutils diffutils findutils gawk gcc-toolchain grep git guile gzip help2man make mescc-tools nyacc openssh-sans-x pkg-config sed tar texinfo
   #+END_SRC

 ** Try it
--- a/build-aux/bootstrap.sh.in
+++ b/build-aux/bootstrap.sh.in
@ -1,7 +1,7 @@
 #! @SHELL@

 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -54,13 +54,15 @@ AM_CPPFLAGS="-D HAVE_CONFIG_H=1 -I ${srcdest}include -I ${srcdest}include/$mes_k
 AM_CFLAGS="-L ${srcdest}lib"

 mkdir -p $mes_cpu-mes
-$CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}lib/$mes_kernel/$mes_cpu-mes-$compiler/crt1.c
+cp ${srcdest}lib/$mes_kernel/$mes_cpu-mes-$compiler/crt1.c .
+$CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS crt1.c
 cp crt1.o $mes_cpu-mes
 cp crt1.s $mes_cpu-mes

 objects=
 for c in $libc_mini_SOURCES; do
-    o=$(basename $c .c).o
+    b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
+    o=$b.o
    if test ! -e $o -o ${srcdest}$c -nt $o; then
        echo "  CC       $c"
        $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
@ -72,7 +74,8 @@ $AR crD $mes_cpu-mes/libc-mini.a $objects

 objects=
 for c in $libmescc_SOURCES; do
-    o=$(basename $c .c).o
+    b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
+    o=$b.o
    if test ! -e $o -o ${srcdest}$c -nt $o; then
        echo "  CC       $c"
        $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
@ -84,7 +87,8 @@ $AR crD $mes_cpu-mes/libmescc.a $objects

 objects=
 for c in $libc_SOURCES; do
-    o=$(basename $c .c).o
+    b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
+    o=$b.o
    if test ! -e $o -o ${srcdest}$c -nt $o; then
        echo "  CC       $c"
        $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
@ -96,7 +100,8 @@ $AR crD $mes_cpu-mes/libc.a $objects

 objects=
 for c in $libc_tcc_SOURCES; do
-    o=$(basename $c .c).o
+    b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
+    o=$b.o
    if test ! -e $o -o ${srcdest}$c -nt $o; then
        echo "  CC       $c"
        $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
@ -113,7 +118,8 @@ AM_CFLAGS="-L ${srcdest}lib"

 objects=
 for c in $mes_SOURCES; do
-    o=$(basename $c .c).o
+    b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
+    o=$b.o
    if test ! -e $o -o ${srcdest}$c -nt $o; then
        echo "  CC       $c"
        $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
--- a/build-aux/build-lib.sh
+++ b/build-aux/build-lib.sh
@ -1,7 +1,7 @@
 #! /bin/sh

 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -26,7 +26,8 @@
 trap 'test -f .log && cat .log' EXIT

 mkdir -p $mes_cpu-mes
-compile lib/$mes_kernel/$mes_cpu-mes-$compiler/crt1.c
+cp ${srcdest}lib/$mes_kernel/$mes_cpu-mes-$compiler/crt1.c .
+compile crt1.c
 cp crt1.o $mes_cpu-mes
 if test -e crt1.s; then
    cp crt1.s $mes_cpu-mes
--- a/build-aux/build-scaffold.sh
+++ b/build-aux/build-scaffold.sh
@ -1,7 +1,7 @@
 #! /bin/sh

 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -29,6 +29,7 @@ fi

 . ./config.sh
 . ${srcdest}build-aux/trace.sh
+. ${srcdest}build-aux/cflags.sh

 if $courageous; then
    set +e
@ -42,25 +43,6 @@ else
    }
 fi

-case "$mes_cpu" in
-    arm)
-        stage0_arch=40
-        stage0_cpu=armv7l
-        ;;
-    x86_64)
-        stage0_arch=2
-        stage0_cpu=amd64
-        ;;
-    x86)
-        stage0_arch=1
-        stage0_cpu=x86
-        ;;
-    *)
-        stage0_arch=1
-        stage0_cpu=$mes_cpu
-        ;;
-esac
-
 trace "CCLD       ${srcdest}lib/$mes_kernel/$mes_cpu-mes-$compiler/exit-42.S" $CC\
      -nostdlib\
      -g\
--- a/build-aux/build.sh.in
+++ b/build-aux/build.sh.in
@ -38,25 +38,6 @@ set -u
 . ./config.sh
 . ${srcdest}build-aux/cflags.sh

-case "$mes_cpu" in
-    arm)
-        stage0_arch=40
-        stage0_cpu=armv7l
-        ;;
-    x86_64)
-        stage0_arch=2
-        stage0_cpu=amd64
-        ;;
-    x86)
-        stage0_arch=1
-        stage0_cpu=x86
-        ;;
-    *)
-        stage0_arch=1
-        stage0_cpu=$mes_cpu
-        ;;
-esac
-
 if $courageous; then
    echo "Applying courage"
    set +e
@ -170,7 +151,6 @@ fi
    ${SHELL} ${srcdest}build-aux/build-lib.sh
    ${SHELL} ${srcdest}build-aux/build-source-lib.sh
    if $bootstrap; then
-        rm -f globals.* # FIXME: avoid name clash with globals from lib
        ${SHELL} ${srcdest}build-aux/build-mes.sh
        cp -f bin/mes-mescc ../bin
        cp -f bin/mes ../bin
--- a/build-aux/cc.sh
+++ b/build-aux/cc.sh
@ -1,5 +1,5 @@
 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -18,8 +18,12 @@

 objects=
 compile () {
-    c=${srcdest}$1
-    b=$(basename $c .c)
+    if test $(dirname $1) = "."; then
+        c=$1
+    else
+        c=${srcdest}$1
+    fi
+    b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
    o=$b.o
    objects="$objects $o"
    if test ! -e $o -o $c -nt $o; then
@ -34,7 +38,7 @@ archive () {
    sources="$@"
    objects=
    for c in $sources; do
-        b=$(basename $c .c)
+        b=$(echo $c | sed -re s,^[.]+/,, -e s,/,-,g -e s,[.]c$,,)
        o=$b.o
        compile $c
    done
--- a/build-aux/cflags.sh
+++ b/build-aux/cflags.sh
@ -1,5 +1,5 @@
 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -16,6 +16,25 @@
 # You should have received a copy of the GNU General Public License
 # along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.

+case "$mes_cpu" in
+    arm)
+        stage0_arch=40
+        stage0_cpu=armv7l
+        ;;
+    x86_64)
+        stage0_arch=2
+        stage0_cpu=amd64
+        ;;
+    x86)
+        stage0_arch=1
+        stage0_cpu=x86
+        ;;
+    *)
+        stage0_arch=1
+        stage0_cpu=$mes_cpu
+        ;;
+esac
+
 AM_CPPFLAGS="
 -D HAVE_CONFIG_H=1
 -I ${srcdest}include
--- a/build-aux/check-mescc.sh
+++ b/build-aux/check-mescc.sh
@ -1,7 +1,7 @@
 #! /bin/sh

 # GNU Mes --- Maxwell Equations of Software
-# Copyright © 2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -117,6 +117,7 @@ lib/tests/scaffold/54-argv.c
 lib/tests/scaffold/55-char-array.c
 lib/tests/scaffold/60-math.c
 lib/tests/scaffold/60-math-itoa.c
+lib/tests/scaffold/60-math-modulo.c
 lib/tests/scaffold/61-array.c
 lib/tests/scaffold/62-array.c
 lib/tests/scaffold/63-struct.c
--- a/build-aux/configure-lib.sh
+++ b/build-aux/configure-lib.sh
@ -74,7 +74,7 @@ libc_mini_SOURCES="$libc_mini_shared_SOURCES"

 if test $mes_libc = mes; then
    libc_mini_SOURCES="$libc_mini_SOURCES
-lib/mes/mini-write.c
+lib/mes/write.c
 "
 fi

@ -215,6 +215,7 @@ lib/linux/malloc.c
 lib/linux/_read.c
 lib/linux/time.c
 lib/linux/unlink.c
+lib/linux/wait4.c
 lib/linux/waitpid.c
 lib/linux/$mes_cpu-mes-$compiler/syscall.c
 lib/linux/getpid.c
--- a/build-aux/pointer.sh
+++ b/build-aux/pointer.sh
@ -48,7 +48,6 @@ sed -ri                                                         \
    include/mes/mes.h                                           \
    include/mes/symbols.h                                       \
    include/mes/builtins.h                                      \
-    include/m2/lib.h                                            \
    src/builtins.c                                              \
    src/cc.c                                                    \
    src/core.c                                                  \
--- a/guix/git/mes.scm
+++ b/guix/git/mes.scm
@ -1,5 +1,5 @@
 ;;; GNU Mes --- Maxwell Equations of Software
-;;; Copyright © 2016,2017,2018,2019,2020,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2016,2017,2018,2019,2020,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Mes.
 ;;;
@ -68,7 +68,7 @@
    (build-system gnu-build-system)
    (supported-systems
     '("aarch64-linux" "armhf-linux" "i686-linux" "x86_64-linux"))
-    (native-inputs (list which))
+    (native-inputs `(("which" ,which)))
    (arguments
     `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
                          (string-append "CC=" ,(cc-for-target)))
@ -87,7 +87,7 @@ get_machine.")
 (define-public m2-planet
  (package
    (name "m2-planet")
-    (version "1.9.0")
+    (version "1.10.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
@ -97,8 +97,9 @@ get_machine.")
              (file-name (git-file-name name version))
              (sha256
               (base32
-                "0cgvvq91cbxxm93k8ayyvhpaf3c2lv10qw4wyqwn3hc1qb1cfyvr"))))
-    (native-inputs (list mescc-tools))
+                "03ixvfdzhyy1d94iqpwl0p924pdvdp7yq4ggm05w3c013kzy2y12"))))
+    (native-inputs
+     `(("mescc-tools" ,mescc-tools)))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
@ -142,8 +143,10 @@ with introspective steps inbetween.")
                     "DOCDIR = @prefix@/share/doc/$(PACKAGE_TARNAME)\n"))
                  #t))))
    (build-system gnu-build-system)
-    (native-inputs (list pkg-config))
-    (inputs (list guile-2.2))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("guile" ,guile-2.2)))
    (synopsis "LALR(1) Parser Generator in Guile")
    (description
     "NYACC is an LALR(1) parser generator implemented in Guile.
@ -178,7 +181,8 @@ extensive examples, including parsers for the Javascript and C99 languages.")
              (sha256
               (base32
                "065ksalfllbdrzl12dz9d9dcxrv97wqxblslngsc6kajvnvlyvpk"))))
-    (inputs (list guile-3.0))))
+    (inputs
+     `(("guile" ,guile-3.0)))))

 (define-public mes
  (package
@ -192,28 +196,32 @@ extensive examples, including parsers for the Javascript and C99 languages.")
               (base32 #!mes!# "00lrpm4x5qg0l840zhbf9mr67mqhp8gljcl24j5dy0y109gf32w2"))))
    (build-system gnu-build-system)
    (supported-systems '("aarch64-linux" "armhf-linux" "i686-linux" "x86_64-linux"))
-    (propagated-inputs (list mescc-tools nyacc))
+    (propagated-inputs
+     `(("mescc-tools" ,mescc-tools)
+       ("nyacc" ,nyacc)))
    (native-inputs
-     (append
-      (list guile-3.0)
-      (let ((target-system (or (%current-target-system)
-                               (%current-system))))
-        (cond
-         ((string-prefix? "x86_64-linux" target-system)
-          ;; Use cross-compiler rather than #:system "i686-linux" to get
-          ;; MesCC 64 bit .go files installed ready for use with Guile.
-          (list (cross-binutils "i686-unknown-linux-gnu")
-                (cross-gcc "i686-unknown-linux-gnu")))
-         ((string-prefix? "aarch64-linux" target-system)
-          ;; Use cross-compiler rather than #:system "armhf-linux" to get
-          ;; MesCC 64 bit .go files installed ready for use with Guile.
-          (let ((triplet "arm-linux-gnueabihf"))
-            (list (cross-binutils triplet) (cross-gcc triplet))))
-         (else
-          '())))
-      (list graphviz help2man m2-planet
-            perl                        ;build-aux/gitlog-to-changelog
-            texinfo)))
+     `(("guile" ,guile-3.0-latest)
+       ,@(cond ((string-prefix? "x86_64-linux" (or (%current-target-system)
+                                                   (%current-system)))
+                ;; Use cross-compiler rather than #:system "i686-linux" to get
+                ;; MesCC 64 bit .go files installed ready for use with Guile.
+                (let ((triplet "i686-unknown-linux-gnu"))
+                  `(("i686-linux-binutils" ,(cross-binutils triplet))
+                    ("i686-linux-gcc" ,(cross-gcc triplet)))))
+               ((string-prefix? "aarch64-linux" (or (%current-target-system)
+                                                    (%current-system)))
+                ;; Use cross-compiler rather than #:system "armhf-linux" to get
+                ;; MesCC 64 bit .go files installed ready for use with Guile.
+                (let ((triplet "arm-linux-gnueabihf"))
+                  `(("arm-linux-binutils" ,(cross-binutils triplet))
+                    ("arm-linux-gcc" ,(cross-gcc triplet)))))
+               (else
+                '()))
+       ("graphviz" ,graphviz)
+       ("help2man" ,help2man)
+       ("m2-planet" ,m2-planet)
+       ("perl" ,perl)                   ; build-aux/gitlog-to-changelog
+       ("texinfo" ,texinfo)))
    (arguments
     `(#:strip-binaries? #f)) ; binutil's strip b0rkes MesCC/M1/hex2 binaries
    (native-search-paths
--- a/include/fcntl.h
+++ b/include/fcntl.h
@ -69,8 +69,11 @@
 #define creat(file_name, mode) open (file_name, O_WRONLY | O_CREAT | O_TRUNC, mode)
 int dup (int old);
 int dup2 (int old, int new);
+
+#if !__M2__
 int fcntl (int filedes, int command, ...);
 int open (char const *s, int flags, ...);
+#endif

 #endif // ! SYSTEM_LIBC

--- a/include/linux/arm/syscall.h
+++ b/include/linux/arm/syscall.h
@ -25,47 +25,29 @@

 /* libc-mini */
 #ifndef SYS_exit
-// CONSTANT SYS_exit 0x01
 #define SYS_exit    0x01
 #endif
 #ifndef SYS_write
-// CONSTANT SYS_write 0x04
 #define SYS_write   0x04
 #endif

 /* libc */
-// CONSTANT SYS_fork 0x02
 #define SYS_fork    0x02
-// CONSTANT SYS_read 0x03
 #define SYS_read    0x03
-// CONSTANT SYS_open 0x05
 #define SYS_open    0x05
 //#define SYS_waitpid
-// CONSTANT SYS_wait4 0x72
 #define SYS_wait4   0x72
-// CONSTANT SYS_execve 0x0b
 #define SYS_execve  0x0b
-// CONSTANT SYS_chmod 0x0f
 #define SYS_chmod   0x0f
-// CONSTANT SYS_access 0x21
 #define SYS_access  0x21
-// CONSTANT SYS_brk 0x2d
 #define SYS_brk     0x2d
-// CONSTANT SYS_ioctl 0x36
 #define SYS_ioctl   0x36
-// CONSTANT SYS_fsync 0x76
 #define SYS_fsync   0x76
-// CONSTANT SYS_getcwd 0xb7
 #define SYS_getcwd  0xb7
-// CONSTANT SYS_dup 0x29
 #define SYS_dup     0x29
-// CONSTANT SYS_dup2 0x3f
 #define SYS_dup2    0x3f
-// CONSTANT SYS_unlink 0x0a
 #define SYS_unlink  0x0a
-// CONSTANT SYS_gettimeofday 0x4e
 #define SYS_gettimeofday 0x4e
-// CONSTANT SYS_clock_gettime 0x107
 #define SYS_clock_gettime 0x107

 /* libc+tcc */
--- a/include/linux/x86/syscall.h
+++ b/include/linux/x86/syscall.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2017,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -22,50 +22,30 @@

 /* libc-mini */
 #ifndef SYS_exit
-// CONSTANT SYS_exit 0x01
 #define SYS_exit    0x01
 #endif
 #ifndef SYS_write
-// CONSTANT SYS_write 0x04
 #define SYS_write   0x04
 #endif

 /* libc */
-// CONSTANT SYS_fork 0x02
 #define SYS_fork    0x02
-// CONSTANT SYS_read 0x03
 #define SYS_read    0x03
-// CONSTANT SYS_open 0x05
 #define SYS_open    0x05
-// CONSTANT SYS_waitpid 0x07
 #define SYS_waitpid 0x07
-// CONSTANT SYS_wait4 0x72
 #define SYS_wait4   0x72
-// CONSTANT SYS_execve 0x0b
 #define SYS_execve  0x0b
-// CONSTANT SYS_chmod 0x0f
 #define SYS_chmod   0x0f
-// CONSTANT SYS_access 0x21
 #define SYS_access  0x21
-// CONSTANT SYS_brk 0x2d
 #define SYS_brk     0x2d
-// CONSTANT SYS_ioctl 0x36
 #define SYS_ioctl   0x36
-// CONSTANT SYS_fsync 0x76
 #define SYS_fsync   0x76
-// CONSTANT SYS_getcwd 0xb7
 #define SYS_getcwd 0xb7
-// CONSTANT SYS_dup 0x29
 #define SYS_dup       0x29
-// CONSTANT SYS_dup2 0x3f
 #define SYS_dup2      0x3f
-// CONSTANT SYS_unlink 0x0a
 #define SYS_unlink 0x0a
-// CONSTANT SYS_gettimeofday 0x4e
 #define SYS_gettimeofday 0x4e
-// CONSTANT SYS_clock_gettime 0x109
 #define SYS_clock_gettime 0x109
-// CONSTANT SYS_time 0x0d
 #define SYS_time   0x0d

 /* libc+tcc */
--- a/include/m2/lib.h
+++ b/include/m2/lib.h
@ -1,70 +0,0 @@
-/*
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __M2_LIB_H
-#define __M2_LIB_H
-
-char **environ;
-int __stdin;
-int __stdout;
-int __stderr;
-int errno;
-
-// CONSTANT EOF 0xffffffff
-// CONSTANT __FILEDES_MAX 512
-
-char* cast_intp_to_charp (int *i);
-char* cast_long_to_charp (long i);
-long cast_charp_to_long (char const *);
-long cast_int_to_long (int i);
-long cast_voidp_to_long (void const *);
-
-char *itoa (int number);
-char *ltoa (long number);
-int __ungetc_p (int filedes);
-int eputs (char *s);
-int oputs (char *s);
-int puts (char *s);
-size_t strlen (char *s);
-ssize_t _write ();
-ssize_t write (int filedes, void *buffer, size_t size);
-void __ungetc_clear (int filedes);
-void __ungetc_init ();
-void __ungetc_set (int filedes, int c);
-
-struct timezone
-{
-  int tz_minuteswest;
-  int tz_dsttime;
-};
-
-struct timespec
-{
-  long tv_sec;
-  long tv_nsec;
-};
-
-struct timeval
-{
-  long tv_sec;
-  long tv_usec;
-};
-
-#endif /* __M2_LIB_H */
--- a/include/mes/constants.h
+++ b/include/mes/constants.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -23,76 +23,32 @@

 /* Cell types */

-// CONSTANT TCHAR          0
 #define TCHAR              0

-// CONSTANT TBYTES         1
 #define TBYTES             1
-// CONSTANT TCLOSURE       2
 #define TCLOSURE           2
-// CONSTANT TCONTINUATION  3
 #define TCONTINUATION      3
-// CONSTANT TKEYWORD       4
 #define TKEYWORD           4
-// CONSTANT TMACRO         5
 #define TMACRO             5
-// CONSTANT TNUMBER        6
 #define TNUMBER            6
-// CONSTANT TPAIR          7
 #define TPAIR              7
-// CONSTANT TPORT          8
 #define TPORT              8
-// CONSTANT TREF           9
 #define TREF               9
-// CONSTANT TSPECIAL      10
 #define TSPECIAL          10
-// CONSTANT TSTRING       11
 #define TSTRING           11
-// CONSTANT TSTRUCT       12
 #define TSTRUCT           12
-// CONSTANT TSYMBOL       13
 #define TSYMBOL           13
-// CONSTANT TVALUES       14
 #define TVALUES           14
-// CONSTANT TVARIABLE     15
 #define TVARIABLE         15
-// CONSTANT TVECTOR       16
 #define TVECTOR           16
-// CONSTANT TBROKEN_HEART 17
 #define TBROKEN_HEART     17

 /* Struct types */

-// CONSTANT STRUCT_TYPE 0
 #define STRUCT_TYPE 0
-// CONSTANT STRUCT_PRINTER 1
 #define STRUCT_PRINTER 1

-// CONSTANT GC_FRAME_SIZE 5
 #define GC_FRAME_SIZE 5
-// CONSTANT GC_FRAME_PROCEDURE 4
 #define GC_FRAME_PROCEDURE 4

-// CONSTANT STDIN 0
-// CONSTANT STDOUT 1
-// CONSTANT STDERR 2
-
-/* Unknown type 1
-// CONSTANT EOF -1
-*/
-
-// CONSTANT O_RDONLY 0
-// CONSTANT O_WRONLY 1
-// CONSTANT O_CREAT 0x40
-// CONSTANT O_TRUNC 0x200
-
-// CONSTANT PATH_MAX 1024
-// CONSTANT __FILEDES_MAX 512
-
-// CONSTANT S_IRUSR 00400
-// CONSTANT S_IWUSR 00200
-
-// CONSTANT CLOCK_PROCESS_CPUTIME_ID 2
-
-
 #endif /* __MES_CONSTANTS_H */
--- a/include/mes/lib-mini.h
+++ b/include/mes/lib-mini.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -25,21 +25,27 @@
 #include <mes/config.h>
 #endif

-// CONSTANT STDIN 0
 #ifndef STDIN
 #define STDIN 0
 #endif

-// CONSTANT STDOUT 1
 #ifndef STDOUT
 #define STDOUT 1
 #endif

-// CONSTANT STDERR 2
 #ifndef STDERR
 #define STDERR 2
 #endif

+/* M2-Planet does not support pointer arithmetic.  Explicitly compensate
+   for that by multiplying with M2_PTR_SIZE when using (char)
+   pointers. */
+#if __M2__
+#define M2_PTR_SIZE 4
+#else
+#define M2_PTR_SIZE 1
+#endif
+
 extern char **environ;
 extern int __stdin;
 extern int __stdout;
@ -63,10 +69,14 @@ int oputs (char const *s);
 #ifndef __MES_SIZE_T
 #define __MES_SIZE_T
 #undef size_t
+#if __M2__
+typedef unsigned size_t;
+#else
 typedef unsigned long size_t;
 #endif
 #endif
 #endif
+#endif

 #ifndef _SSIZE_T
 #define _SSIZE_T
--- a/include/mes/lib.h
+++ b/include/mes/lib.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -23,6 +23,9 @@

 #include <mes/lib-mini.h>

+#define __FILEDES_MAX 512
+extern char *__brk;
+
 char *cast_intp_to_charp (int const *i);
 char *cast_long_to_charp (long i);
 long cast_charp_to_long (char const *);
@ -34,14 +37,11 @@ void __ungetc_init ();
 void __ungetc_clear (int filedes);
 void __ungetc_set (int filedes, int c);
 int __ungetc_p (int filedes);
-double abtod (char const **p, int base);
 long abtol (char const **p, int base);
-char *dtoab (double number, int base, int signed_p);
 char *itoa (int number);
 char *ltoa (long number);
 char *ltoab (long x, int base);
 char *ntoab (long number, unsigned base, int signed_p);
-char *ultoa (unsigned long number);
 char *utoa (unsigned number);
 int eputc (int c);
 int fdgetc (int fd);
@ -61,10 +61,12 @@ char *search_path (char const *file_name);
 ssize_t _read (int fd, void *buffer, size_t size);
 void assert_msg (int check, char *msg);

-extern char *__brk;
-extern void (*__call_at_exit) (void);
-
-#define __FILEDES_MAX 512
+long __mesabi_imod (long a, long b);
+long __mesabi_idiv (long a, long b);
+void *__memcpy (void *dest, void const *src, size_t n);
+void *__memmove (void *dest, void const *src, size_t n);
+void *__memset (void *s, int c, size_t n);
+int __raise (int signal);

 #if !SYSTEM_LIBC
 void __assert_fail (char *s);
@ -74,16 +76,15 @@ void _exit (int code);
 long brk (void *addr);
 #endif // !SYSTEM_LIBC

-long __mesabi_imod (long a, long b);
-long __mesabi_idiv (long a, long b);
+#if !__M2__
+extern void (*__call_at_exit) (void);
+double abtod (char const **p, int base);
+char *dtoab (double number, int base, int signed_p);
+char *ultoa (unsigned long number);
 unsigned long __mesabi_umod (unsigned long a, unsigned long b);
 unsigned long __mesabi_udiv (unsigned long a, unsigned long b);
 unsigned long __mesabi_uldiv (unsigned long a, unsigned long b,
                              unsigned long *remainder);
-
-void *__memcpy (void *dest, void const *src, size_t n);
-void *__memmove (void *dest, void const *src, size_t n);
-void *__memset (void *s, int c, size_t n);
-int __raise (int signal);
+#endif

 #endif //__MES_LIB_H
--- a/include/mes/mes.h
+++ b/include/mes/mes.h
@ -53,6 +53,15 @@ struct scm
  };
 };

+/* M2-Planet does not support pointer arithmetic.  Explicitly compensate
+   for that by multiplying with M2_CELL_SIZE when using cell
+   pointers. */
+#if __M2__
+#define M2_CELL_SIZE 12
+#else
+#define M2_CELL_SIZE 1
+#endif
+
 /* mes */
 extern char *g_datadir;
 extern int g_debug;
--- a/include/mes/symbols.h
+++ b/include/mes/symbols.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -137,14 +137,8 @@ extern struct scm *cell_type_broken_heart;
 extern struct scm *cell_symbol_program;
 extern struct scm *cell_symbol_test;

-// CONSTANT SYMBOL_MAX 114
 #define SYMBOL_MAX 114
-
-// CONSTANT CELL_UNSPECIFIED 7
 #define CELL_UNSPECIFIED 7
-
-// CONSTANT CELL_SYMBOL_RECORD_TYPE 82
 #define CELL_SYMBOL_RECORD_TYPE 82

-
 #endif /* __MES_SYMBOLS_H */
--- a/include/signal.h
+++ b/include/signal.h
@ -29,9 +29,12 @@

 #define _SIGSET_NITEMS (_NSIG / (8 * sizeof(unsigned long)))

-typedef struct {
+#if !__M2__
+typedef struct
+{
  unsigned long items[_SIGSET_NITEMS];
 } sigset_t;
+#endif
 typedef long stack_t;

 #include <sys/types.h>
@ -91,6 +94,7 @@ typedef long stack_t;
 #define SA_NOMASK  SA_NODEFER
 #define SA_ONESHOT SA_RESETHAND

+#if !__M2__ // lacks short, casts
 typedef struct siginfo_t
 {
  int          si_signo;
@ -120,7 +124,7 @@ typedef struct siginfo_t
 } siginfo_t;
 // *INDENT-ON*

-#if __MESC__
+#if __M2__ || __MESC__
 typedef long sighandler_t;
 #else
 typedef void (*sighandler_t) (int);
@ -255,6 +259,7 @@ int sigemptyset (sigset_t * set);
 #endif
 int sigprocmask (int how, sigset_t const *set, sigset_t * oldset);

+#endif // !__M2__
 #endif //! SYSTEM_LIBC

 #endif // __MES_SIGNAL_H
--- a/include/stdio.h
+++ b/include/stdio.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -65,30 +65,33 @@ int ferror (FILE * stream);
 int fflush (FILE * stream);
 int fgetc (FILE * stream);
 char *fgets (char *s, int size, FILE * stream);
-int fprintf (FILE * stream, char const *format, ...);
 int fpurge (FILE * stream);
 int fputc (int c, FILE * stream);
 int fputs (char const *s, FILE * stream);
-int fscanf (FILE * stream, char const *template, ...);
 int fseek (FILE * stream, long offset, int whence);
 int getc (FILE * stream);
 int getchar (void);
 char *getlogin (void);
-int printf (char const *format, ...);
 int putc (int c, FILE * stream);
 int putchar (int c);
 int puts (char const *s);
 int remove (char const *file_name);
 int setvbuf (FILE * stream, char *buf, int mode, size_t size);
-int snprintf (char *str, size_t size, char const *format, ...);
-int sprintf (char *str, char const *format, ...);
-int sscanf (char const *str, char const *format, ...);
 int ungetc (int c, FILE * stream);
 long ftell (FILE * stream);
 size_t fread (void *ptr, size_t size, size_t count, FILE * stream);
 size_t freadahead (FILE * fp);
 size_t fwrite (void const *ptr, size_t size, size_t count, FILE * stream);

+#if !__M2__
+int fprintf (FILE * stream, char const *format, ...);
+int fscanf (FILE * stream, char const *template, ...);
+int printf (char const *format, ...);
+int snprintf (char *str, size_t size, char const *format, ...);
+int sprintf (char *str, char const *format, ...);
+int sscanf (char const *str, char const *format, ...);
+#endif // !__M2__
+
 #endif // ! SYSTEM_LIBC

 #endif // __MES_STDIO_H
--- a/include/sys/ioctl.h
+++ b/include/sys/ioctl.h
@ -28,8 +28,13 @@

 #define TCGETS 0x5401
 #define TCGETA 0x5405
+#if __M2__
+int ioctl (int fd, unsigned request, long data);
+int ioctl3 (int fd, unsigned request, long data);
+#else
 int ioctl (int fd, unsigned long request, ...);
 int ioctl3 (int fd, unsigned long request, long data);
+#endif

 #endif // ! SYSTEM_LIBC

--- a/include/sys/resource.h
+++ b/include/sys/resource.h
@ -32,20 +32,20 @@ struct rusage
 {
  struct timeval ru_utime;
  struct timeval ru_stime;
-  long int ru_maxrss;
-  long int ru_ixrss;
-  long int ru_idrss;
-  long int ru_isrss;
-  long int ru_minflt;
-  long int ru_majflt;
-  long int ru_nswap;
-  long int ru_inblock;
-  long int ru_oublock;
-  long int ru_msgsnd;
-  long int ru_msgrcv;
-  long int ru_nsignals;
-  long int ru_nvcsw;
-  long int ru_nivcsw;
+  long ru_maxrss;
+  long ru_ixrss;
+  long ru_idrss;
+  long ru_isrss;
+  long ru_minflt;
+  long ru_majflt;
+  long ru_nswap;
+  long ru_inblock;
+  long ru_oublock;
+  long ru_msgsnd;
+  long ru_msgrcv;
+  long ru_nsignals;
+  long ru_nvcsw;
+  long ru_nivcsw;
 };

 #define RUSAGE_SELF 0
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@ -36,7 +36,29 @@ typedef int mode_t;
 #endif

 // *INDENT-OFF*
-#if __i386__ || __arm__
+#if __M2__
+struct stat
+{
+  unsigned  st_dev;
+  unsigned  st_ino;
+  char st_mode[2];
+  char st_nlink[2];
+  char st_uid[2];
+  char st_gid[2];
+  unsigned st_rdev;
+  long     st_size; /* Linux: unsigned long; glibc: off_t (i.e. signed) */
+  unsigned st_blksize;
+  unsigned st_blocks;
+  time_t   st_atime; /* Linux: unsigned long; glibc: time_t */
+  unsigned st_atime_usec;
+  time_t   st_mtime; /* Linux: unsigned long; glibc: time_t */
+  unsigned st_mtime_usec;
+  time_t   st_ctime; /* Linux: unsigned long; glibc: time_t */
+  unsigned st_ctime_usec;
+  unsigned __foo0;
+  unsigned __foo1;
+};
+#elif __i386__ || __arm__
 struct stat
 {
  unsigned long  st_dev;
--- a/include/sys/types.h
+++ b/include/sys/types.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2017,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -66,15 +66,23 @@ typedef unsigned gid_t;
 #ifndef __MES_INO_T
 #define __MES_INO_T
 #undef ino_t
+#if __M2__
+typedef unsigned ino_t;
+#else
 typedef unsigned long ino_t;
 #endif
+#endif

 #if __SIZEOF_LONG_LONG__ == 8
 #ifndef __MES_INO64_T
 #define __MES_INO64_T
 #undef ino64_t
+#if __M2__
+typedef unsigned ino64_t;
+#else
 typedef unsigned long long ino64_t;
 #endif
+#endif
 #endif // __SIZEOF_LONG_LONG__ == 8

 #if !defined (__MES_INTPTR_T) && !defined (__intptr_t_defined)
@ -83,8 +91,12 @@ typedef unsigned long long ino64_t;
 #undef intptr_t
 typedef long intptr_t;
 #undef uintptr_t
+#if __M2__
+typedef unsigned uintptr_t;
+#else
 typedef unsigned long uintptr_t;
 #endif
+#endif

 #ifndef __MES_OFF_T
 #define __MES_OFF_T
@ -96,8 +108,12 @@ typedef long off_t;
 #ifndef __MES_OFF64_T
 #define __MES_OFF64_T
 #undef off64_t
+#if __M2__
+typedef unsigned off64_t;
+#else
 typedef unsigned long long off64_t;
 #endif
+#endif
 #endif // __SIZEOF_LONG_LONG__ == 8

 #ifndef __MES_PID_T
@ -126,9 +142,13 @@ typedef long sigval_t;
 #ifndef __MES_SIZE_T
 #define __MES_SIZE_T
 #undef size_t
+#if __M2__
+typedef unsigned size_t;
+#else
 typedef unsigned long size_t;
 #endif
 #endif
+#endif

 #ifndef __MES_SSIZE_T
 #define __MES_SSIZE_T
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -20,6 +20,8 @@
 #ifndef __MES_SYS_WAIT_H
 #define __MES_SYS_WAIT_H 1

+#include <sys/resource.h>
+
 #if SYSTEM_LIBC
 #undef __MES_SYS_WAIT_H
 #include_next <sys/wait.h>
@ -35,6 +37,8 @@ typedef int pid_t;

 pid_t waitpid (pid_t pid, int *status_ptr, int options);
 pid_t wait (int *status_ptr);
+pid_t wait4 (pid_t pid, int *wstatus, int options,
+             struct rusage *rusage);

 #endif // ! SYSTEM_LIBC

--- a/include/time.h
+++ b/include/time.h
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2017,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -27,8 +27,8 @@

 #ifndef __MES_TIME_T
 #define __MES_TIME_T 1
-typedef long int clockid_t;
-typedef long int time_t;
+typedef long clockid_t;
+typedef long time_t;
 #endif

 struct tm
--- a/kaem.arm
+++ b/kaem.arm
@ -0,0 +1,24 @@
+#! /bin/sh
+# Copyright © 2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+#
+# This file is part of GNU Mes.
+#
+# GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+
+# Usage:
+# kaem --verbose --strict
+
+mes_cpu=arm
+stage0_cpu=armv7l
+kaem --verbose --strict
--- a/kaem.run
+++ b/kaem.run
@ -25,34 +25,41 @@ stage0_cpu=${stage0_cpu:-x86}
 mkdir -p m2

 M2-Planet                                       \
-    --bootstrap-mode                            \
    --debug                                     \
    --architecture ${stage0_cpu}                \
-    -f include/m2/lib.h                         \
+    -D __linux__=1                              \
+    -f include/mes/config.h                     \
+    -f include/mes/lib-mini.h                   \
+    -f include/mes/lib.h                        \
    -f lib/linux/${mes_cpu}-mes-m2/crt1.c       \
    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
    -f lib/mes/globals.c                        \
    -f lib/m2/cast.c                            \
-    -f lib/m2/exit.c                            \
-    -f lib/mes/mini-write.c                     \
-    -f lib/linux/${mes_cpu}-mes-m2/syscall.c    \
+    -f lib/stdlib/exit.c                        \
+    -f lib/mes/write.c                          \
    -f include/linux/${mes_cpu}/syscall.h       \
+    -f lib/linux/${mes_cpu}-mes-m2/syscall.c    \
    -f lib/stub/__raise.c                       \
    -f lib/linux/brk.c                          \
-    -f lib/m2/malloc.c                          \
+    -f lib/linux/malloc.c                       \
    -f lib/string/memset.c                      \
-    -f lib/m2/read.c                            \
+    -f lib/linux/read.c                         \
    -f lib/mes/fdgetc.c                         \
    -f lib/stdio/getchar.c                      \
    -f lib/stdio/putchar.c                      \
-    -f lib/m2/open.c                            \
-    -f lib/m2/mes_open.c                        \
+    -f lib/stub/__buffered_read.c               \
+    -f lib/linux/_open3.c                       \
+    -f lib/linux/open.c                         \
+    -f lib/mes/mes_open.c                       \
    -f lib/string/strlen.c                      \
    -f lib/mes/eputs.c                          \
    -f lib/mes/fdputc.c                         \
    -f lib/mes/eputc.c                          \
                                                \
+    -f include/time.h                           \
+    -f include/sys/time.h                       \
+    -f include/sys/types.h                      \
    -f include/mes/mes.h                        \
    -f include/mes/builtins.h                   \
    -f include/mes/constants.h                  \
@ -81,17 +88,22 @@ M2-Planet                                       \
    -f lib/mes/fdungetc.c                       \
    -f lib/posix/setenv.c                       \
    -f lib/linux/access.c                       \
-    -f lib/m2/chmod.c                           \
+    -f include/sys/stat.h                       \
+    -f lib/linux/chmod.c                        \
    -f lib/linux/ioctl3.c                       \
+    -f include/sys/ioctl.h                      \
    -f lib/m2/isatty.c                          \
    -f lib/linux/fork.c                         \
    -f lib/m2/execve.c                          \
    -f lib/m2/execv.c                           \
-    -f lib/m2/waitpid.c                         \
+    -f include/sys/resource.h                   \
+    -f lib/linux/wait4.c                        \
+    -f lib/linux/waitpid.c                      \
    -f lib/linux/gettimeofday.c                 \
-    -f lib/m2/clock_gettime.c                   \
+    -f lib/linux/clock_gettime.c                \
    -f lib/m2/time.c                            \
    -f lib/linux/_getcwd.c                      \
+    -f include/limits.h                         \
    -f lib/m2/getcwd.c                          \
    -f lib/linux/dup.c                          \
    -f lib/linux/dup2.c                         \
@ -102,6 +114,7 @@ M2-Planet                                       \
    -f src/core.c                               \
    -f src/display.c                            \
    -f src/eval-apply.c                         \
+    -f include/fcntl.h                          \
    -f src/gc.c                                 \
    -f src/hash.c                               \
    -f src/lib.c                                \
@ -109,6 +122,7 @@ M2-Planet                                       \
    -f src/math.c                               \
    -f src/mes.c                                \
    -f src/module.c                             \
+    -f include/signal.h                         \
    -f src/posix.c                              \
    -f src/reader.c                             \
    -f src/stack.c                              \
--- a/kaem.x86
+++ b/kaem.x86
@ -0,0 +1,24 @@
+#! /bin/sh
+# Copyright © 2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+#
+# This file is part of GNU Mes.
+#
+# GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+
+# Usage:
+# kaem --verbose --strict
+
+mes_cpu=x86
+stage0_cpu=x86
+kaem --verbose --strict
--- a/lib/arm-mes/arm.M1
+++ b/lib/arm-mes/arm.M1
@ -1,5 +1,5 @@
 ### GNU Mes --- Maxwell Equations of Software
-### Copyright © 2017,2018,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+### Copyright © 2017,2018,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ### Copyright © 2019,2020 Danny Milosavljevic <dannym@scratchpost.org>
 ###
 ### This file is part of GNU Mes.
@ -31,6 +31,7 @@ DEFINE add____$i8,%r0   0090e2 # adds r0, r0, #xx; ADDSI = immediate op1 '09' op
 #                       1090e2 # adds r1, r0, #xx; ADDSI = immediate op1 '09' op2 'e2'
 DEFINE add____$i8,%r1   1091e2 # adds    r1, r1, #xx
 DEFINE add____$i8,%r13  d09de2 # adds    r13, r13, #xx
+DEFINE add____$i8,%ebp  e28cc0 # adds    ip, ip, #xx
 DEFINE sub____$i8,%r0   0050e2 # subs    r0, r0, #xx
 DEFINE sub____$i8,%r1   1051e2 # subs    r1, r1, #xx
 DEFINE add____%r0,%r0 000090e0 # adds    r0, r0, r0
@ -91,6 +92,7 @@ DEFINE mov____%r0,(%r1) 000081e5
 DEFINE mov____%r1,%r0 0100a0e1
 DEFINE mov____%r1,%r2 0120a0e1
 DEFINE mov____%esp,%r0 0d00a0e1
+DEFINE mov____%esp,%r3 0d30a0e1

 # e59f9004        ldr     r9, [pc, #4]    ; <L1>
 # e5890000        str     r0, [r9]
--- a/lib/linux/_open3.c
+++ b/lib/linux/_open3.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -26,7 +26,9 @@
 int
 _open3 (char const *file_name, int flags, int mask)
 {
-  int r = _sys_call3 (SYS_open, (long) file_name, (int) flags, (int) mask);
+  long long_file_name = cast_int_to_long (file_name);
+  int r = _sys_call3 (SYS_open, long_file_name, flags, mask);
+  __ungetc_init ();
  if (r > 2)
    {
      __ungetc_clear (r);
--- a/lib/linux/arm-mes-m2/crt1.M1
+++ b/lib/linux/arm-mes-m2/crt1.M1
@ -1,6 +1,7 @@
 ### GNU Mes --- Maxwell Equations of Software
 ### Copyright (C) 2016 Jeremiah Orians
-### Copyright © 2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+### Copyright © 2017,2018,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+### Copyright © 2020 Danny Milosavljevic <dannym@scratchpost.org>
 ###
 ### This file is part of GNU Mes.
 ###
@ -17,6 +18,47 @@
 ### You should have received a copy of the GNU General Public License
 ### along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.

+:UNUSED_start
+        ;; ??? from M2
+	'0' SP BP NO_SHIFT MOVE_ALWAYS  ; Setup Base Pointer
+
+	push___%lr
+	push___%ebp
+	mov____%esp,%ebp
+	allocate_stack_4180
+	!0 mov____$i8,%r0
+	mov____%r0,0x32 &GLOBAL___stdin
+	!1 mov____$i8,%r0
+	mov____%r0,0x32 &GLOBAL___stdout
+	!2 mov____$i8,%r0
+	mov____%r0,0x32 &GLOBAL___stderr
+	!8 ldr____%r0,(%fp,+#$i8)
+	mov____%fp,%r1
+	!12 add____%r1,$i8
+	add____%r2,%r1,%r0,lsl#2
+	!4 add____%r2,$i8
+	mov____%r2,0x32 &GLOBAL_environ
+
+; M2-Planet calling convention pushes forward
+	push___%r0	; argc
+	push___%r1      ; argv
+	push___%r2      ; environ
+
+        !4 add____$i8,%ebp	;M2-Planet calling convention
+	^~FUNCTION_main bl
+	!0x0 add____$i8,%esp
+	!0x0 cmp____$i8,%r0
+	SYS_exit mov____$i8,%r7
+	swi____$0
+:__start_loop
+	wfi
+	!0x1 mov____$i8,%r0
+	!0x0 cmp____$i8,%r0
+	^~__start_loop b
+	mov____%ebp,%esp
+	pop____%ebp
+	ret
+
 :_start
 	'0' SP BP NO_SHIFT MOVE_ALWAYS  ; Setup Base Pointer

--- a/lib/linux/lseek.c
+++ b/lib/linux/lseek.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -24,23 +24,13 @@
 #include <stdio.h>
 #include <sys/types.h>

-#if !__MESC__ /* FIXME: We want bin/mes-mescc's x86-linux sha256sum to stay the same. */
-off_t
-_lseek (int filedes, off_t offset, int whence)
-{
-  return _sys_call3 (SYS_lseek, (int) filedes, (long) offset, (int) whence);
-}
-#endif
-
 off_t
 lseek (int filedes, off_t offset, int whence)
 {
-#if !__MESC__ /* FIXME: We want bin/mes-mescc's x86-linux sha256sum to stay the same. */
-  if (_lseek (filedes, 0, SEEK_CUR) == -1)
-    return -1;
-#endif
+  long long_filedes = filedes;
+  long long_offset = offset;
  size_t skip = __buffered_read_clear (filedes);
  if (whence == SEEK_CUR)
    offset -= skip;
-  return _sys_call3 (SYS_lseek, (int) filedes, (long) offset, (int) whence);
+  return _sys_call3 (SYS_lseek, long_filedes, long_offset, whence);
 }
--- a/lib/linux/malloc.c
+++ b/lib/linux/malloc.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 * Copyright © 2021 Danny Milosavljevic <dannym@scratchpost.org>
 *
 * This file is part of GNU Mes.
@ -31,9 +31,11 @@ malloc (size_t size)
 {
  if (!__brk)
    __brk = cast_long_to_charp (brk (0));
+#if !__M2__
  /* align what we give back. */
  __brk = (char*) (((uintptr_t) __brk
                    + sizeof (max_align_t) - 1) & -sizeof (max_align_t));
+#endif
  if (brk (__brk + size) == -1)
    return 0;
  char *p = __brk;
--- a/lib/linux/open.c
+++ b/lib/linux/open.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -22,6 +22,7 @@
 #include <fcntl.h>
 #include <stdarg.h>

+#if __M2__
 int
 open (char *file_name, int flags, int mask)
 {
@ -30,3 +31,17 @@ open (char *file_name, int flags, int mask)
    __ungetc_clear (r);
  return r;
 }
+#else // !__M2__
+int
+open (char const *file_name, int flags, ...)
+{
+  va_list ap;
+  va_start (ap, flags);
+  int mask = va_arg (ap, int);
+  int r = _sys_call3 (SYS_open, (long) file_name, flags, mask);
+  va_end (ap);
+  if (r > 2)
+    __ungetc_clear (r);
+  return r;
+}
+#endif // __M2__
--- a/lib/linux/read.c
+++ b/lib/linux/read.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -18,16 +18,18 @@
 * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
 */

+#include <mes/lib.h>
 #include <linux/syscall.h>
 #include <syscall.h>
-#include <mes/lib.h>
 #include <fcntl.h>

 ssize_t
 read (int filedes, void *buffer, size_t size)
 {
  long long_filedes = filedes;
-  ssize_t bytes = _sys_call3 (SYS_read, long_filedes, buffer, size);
+  long long_buffer = cast_voidp_to_long (buffer);
+  ssize_t bytes = _sys_call3 (SYS_read, long_filedes, long_buffer, size);
+#if !__M2__
  if (__mes_debug () > 4)
    {
      if (bytes == 1)
@ -48,5 +50,6 @@ read (int filedes, void *buffer, size_t size)
          eputs ("\n");
        }
    }
+#endif
  return bytes;
 }
--- a/lib/linux/time.c
+++ b/lib/linux/time.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -21,14 +21,8 @@
 #include <linux/syscall.h>
 #include <syscall.h>
 #include <time.h>
-#include <stdlib.h>
-
-/* Linux' SYS_time syscall is a compatibility shim for SYS_gettimeofday.
-Therefore, prefer SYS_gettimeofday. */
-
-#if defined (SYS_gettimeofday)
-
 #include <sys/time.h>
+#include <stdlib.h>

 time_t
 time (time_t * result)
@ -41,31 +35,3 @@ time (time_t * result)
    *result = tv.tv_sec;
  return tv.tv_sec;
 }
-
-#elif defined (SYS_time)
-
-time_t
-time (time_t * result)
-{
-  return _sys_call1 (SYS_time, (long) result);
-}
-
-#else
-
-#warning there is no time
-
-#include <mes/lib.h>
-
-time_t
-time (time_t * result)
-{
-  static int stub = 0;
-  if (__mes_debug () && !stub)
-    eputs ("time stub\n");
-  stub = 1;
-  if (result)
-    *result = 0;
-  return 0;
-}
-
-#endif
--- a/lib/linux/wait4.c
+++ b/lib/linux/wait4.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -22,18 +22,15 @@
 #include <linux/syscall.h>
 #include <syscall.h>
 #include <sys/types.h>
+#include <sys/resource.h>

-int
-waitpid (int pid, int *status_ptr, int options)
+pid_t
+wait4 (pid_t pid, int *status_ptr, int options, struct rusage *rusage)
 {
  long long_pid = pid;
  long long_status_ptr = cast_voidp_to_long (status_ptr);
  long long_options = options;
-//##if __i386__
-//#  return _sys_call3 (SYS_waitpid, long_pid, long_status_ptr, long_options);
-//##elif __x86_64__ || __arm__
-  return _sys_call4 (SYS_wait4, long_pid, long_status_ptr, long_options, 0);
-//##else
-//##error arch not supported
-//##endif
+  long long_rusage = cast_voidp_to_long (rusage);
+  return _sys_call4 (SYS_wait4, long_pid, long_status_ptr, long_options,
+                     long_rusage);
 }
--- a/lib/linux/waitpid.c
+++ b/lib/linux/waitpid.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -25,11 +25,12 @@
 pid_t
 waitpid (pid_t pid, int *status_ptr, int options)
 {
-#if __i386__
-  return _sys_call3 (SYS_waitpid, (long) pid, (long) status_ptr, (int) options);
-#elif __x86_64__ || __arm__
-  return _sys_call4 (SYS_wait4, (long) pid, (long) status_ptr, (int) options, 0);
-#else
-#error arch not supported
+  long long_pid = pid;
+  long long_status_ptr = cast_voidp_to_long (status_ptr);
+  long long_options = options;
+#if SYS_waitpid
+  return _sys_call3 (SYS_waitpid, long_pid, long_status_ptr, long_options);
+#elif SYS_wait4
+  return wait4 (pid, status_ptr, options, 0);
 #endif
 }
--- a/lib/m2/chmod.c
+++ b/lib/m2/chmod.c
@ -1,31 +0,0 @@
-/* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/syscall.h>
-#include <syscall.h>
-#include <sys/stat.h>
-
-int
-chmod (char const *file_name, int mask)
-{
-  long long_file_name = file_name;
-  long long_mask = mask;
-  return _sys_call2 (SYS_chmod, long_file_name, long_mask);
-}
--- a/lib/m2/clock_gettime.c
+++ b/lib/m2/clock_gettime.c
@ -1,30 +0,0 @@
-/* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/syscall.h>
-#include <syscall.h>
-#include <time.h>
-
-int
-clock_gettime (long clk_id, struct timespec *tp)
-{
-  long long_tp = tp;
-  return _sys_call2 (SYS_clock_gettime, clk_id, tp);
-}
--- a/lib/m2/getcwd.c
+++ b/lib/m2/getcwd.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -24,8 +24,6 @@
 #include <stdlib.h>
 #include <sys/types.h>

-// CONSTANT PATH_MAX 1024
-
 char *__getcwd_buf;

 char *
--- a/lib/m2/isatty.c
+++ b/lib/m2/isatty.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -24,7 +24,6 @@
 #include <string.h>
 #include <termio.h>

-// CONSTANT TCGETS 0x5401
 #define TCGETS 0x5401

 struct ktermios
--- a/lib/m2/malloc.c
+++ b/lib/m2/malloc.c
@ -1,36 +0,0 @@
-/* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <mes/lib.h>
-#include <string.h>
-
-char *__brk = 0;
-
-void *
-malloc (size_t size)
-{
-  if (!__brk)
-    __brk = cast_long_to_charp (brk (0));
-  if (brk (__brk + size) == -1)
-    return 0;
-  char *p = __brk;
-  __brk = __brk + size;
-  return p;
-}
--- a/lib/m2/mes_open.c
+++ b/lib/m2/mes_open.c
@ -1,28 +0,0 @@
-/* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-int
-mes_open (char *file_name, int flags, int mask)
-{
-  int filedes = open (file_name, flags, mask);
-  if (filedes > 2)
-    __ungetc_clear (filedes);
-  return filedes;
-}
--- a/lib/m2/read.c
+++ b/lib/m2/read.c
@ -1,31 +0,0 @@
-/* -*-comment-start: "//";comment-end:""-*-
- * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- *
- * This file is part of GNU Mes.
- *
- * GNU Mes 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 Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/syscall.h>
-#include <syscall.h>
-#include <mes/lib.h>
-#include <fcntl.h>
-
-long
-read (int filedes, void *buffer, long size)
-{
-  long bytes = _sys_call3 (SYS_read, filedes, buffer, size);
-  return bytes;
-}
--- a/lib/mes/ntoab.c
+++ b/lib/mes/ntoab.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -23,7 +23,13 @@
 #include <stdlib.h>
 #include <string.h>

-#if __M2_PLANET__ || !(__MESC__ && __arm__)
+#if __MESC__ && __arm__
+#define __MESC__and__arm__
+#endif
+
+// FIXME: M2-Planet 1.10.0 crashes on this...
+// #if __M2__ || !(__MESC__ && __arm__)
+#if __M2__ || !defined (__MESC__and__arm__)
 size_t
 __mesabi_uldiv (size_t a, size_t b, size_t *remainder)
 {
--- a/lib/mes/mini-write.c
+++ b/lib/mes/mini-write.c
--- a/lib/posix/getcwd.c
+++ b/lib/posix/getcwd.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -23,8 +23,6 @@
 #include <sys/types.h>
 #include <mes/lib.h>

-char *__getcwd_buf;
-
 char *
 getcwd (char *buffer, size_t size)
 {
--- a/lib/posix/getenv.c
+++ b/lib/posix/getenv.c
@ -1,6 +1,6 @@
 /*
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -22,9 +22,6 @@
 #include <string.h>
 #include <stdlib.h>

-// CONSTANT M2_PTR_SIZE 4
-#define M2_PTR_SIZE 1
-
 char *
 getenv (char const *s)
 {
--- a/lib/posix/open.c
+++ b/lib/posix/open.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -29,6 +29,13 @@ _open2 (char const *file_name, int flags)
  return _open3 (file_name, flags, mask);
 }

+#if __M2__
+int
+open (char const *file_name, int flags, int mask)
+{
+  return _open3 (file_name, flags, mask);
+}
+#else // !__M2__
 int
 open (char const *file_name, int flags, ...)
 {
@ -44,3 +51,4 @@ open (char const *file_name, int flags, ...)
  else
    return _open2 (file_name, flags);
 }
+#endif // !__M2__
--- a/lib/posix/setenv.c
+++ b/lib/posix/setenv.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -22,9 +22,6 @@
 #include <string.h>
 #include <stdlib.h>

-// CONSTANT M2_PTR_SIZE 4
-#define M2_PTR_SIZE 1
-
 int
 setenv (char const *s, char const *v, int overwrite_p)
 {
--- a/lib/stdlib/exit.c
+++ b/lib/stdlib/exit.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -20,12 +20,16 @@

 #include <mes/lib.h>

+#if !__M2__
 void (*__call_at_exit) (void);
+#endif

 void
 exit (int code)
 {
+#if !__M2__
  if (__call_at_exit)
    (*__call_at_exit) ();
+#endif
  _exit (code);
 }
--- a/lib/stub/__buffered_read.c
+++ b/lib/stub/__buffered_read.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -19,11 +19,15 @@
 */

 #include <mes/lib.h>
-
-void _exit (int code);
+#include <stdlib.h>
+#include <string.h>

 void
-exit (int code)
+__buffered_read_init (int filedes)
+{
+}
+
+size_t
+__buffered_read_clear (int filedes)
 {
-  _exit (code);
 }
--- a/lib/stub/__raise.c
+++ b/lib/stub/__raise.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -18,8 +18,6 @@
 * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
 */

-// CONSTANT SIGABRT 0
-
 int
 __raise (int signum)
 {
--- a/lib/tests/scaffold/60-math-modulo.c
+++ b/lib/tests/scaffold/60-math-modulo.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -18,39 +18,62 @@
 * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
 */

-#if SYSTEM_LIBC
-#error "SYSTEM_LIBC not supported"
-#endif
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>

 #include <mes/lib.h>
-#include <stdio.h>
-#include <stdlib.h>

 int
-main (int argc, char *argv[])
+main ()
 {
-  int size = 5000;
-  puts ("m!\n");
-  //int *p = 0;
-  char *p = 0;
-  p = malloc (size);
-  size = 5000;
-  puts ("p=");
-  puts (itoa (p));
-  puts ("\n");
-  for (int i = 0; i < size; i++)
-    {
-      puts ("set ");
-      puts (itoa (i));
-      puts ("\n");
-      p[i] = i;
-    }
-  for (int i = 0; i < size; i++)
-    {
-      puts (itoa (i));
-      puts (": ");
-      puts (itoa (p[i]));
-      puts ("\n");
-    }
+  int i;
+
+  oputs ("\n");
+
+  oputs ("t: 1 % 2\n");
+  i = 1 % 2;
+  if (i != 1)
+    return 1;
+
+  oputs ("t: 2 % 4\n");
+  i = 2 % 4;
+  if (i != 2)
+    return 2;
+
+  oputs ("t: 3 % 4\n");
+  i = 3 % 4;
+  if (i != 3)
+    return 3;
+
+  oputs ("t: 1 % 256\n");
+  i = 1 % 256;
+  if (i != 1)
+    return 4;
+
+  unsigned u;
+
+  oputs ("\n");
+
+  oputs ("t: 1U % 2\n");
+  u = 1 % 2;
+  if (u != 1)
+    return 5;
+
+  oputs ("t: 2U % 4\n");
+  u = 2 % 4;
+  if (u != 2)
+    return 6;
+
+  oputs ("t: 3U % 4\n");
+  u = 3 % 4;
+  if (u != 3)
+    return 7;
+
+  oputs ("t: 1U % 256\n");
+  u = 1 % 256;
+  if (u != 1)
+    return 8;
+
  return 0;
 }
--- a/module/mescc/armv4/as.scm
+++ b/module/mescc/armv4/as.scm
@ -383,9 +383,9 @@
               `(,(string-append "push___%" r0))
               (armv4:call-label #f "__mesabi_imod" 2))
        ;; __mesabi_uldiv(a, b, remainderp)
-        (append `(("push___%r0") ; slot for remainder
-                  ("mov____%esp,%r0")
-                  ("push___%r0") ; pointer to remainder
+        (append `(("push___%r3")     ; slot for remainder
+                  ("mov____%esp,%r3")
+                  ("push___%r3")     ; pointer to remainder
                  (,(string-append "push___%" r1))
                  (,(string-append "push___%" r0)))
                (armv4:call-label #f "__mesabi_uldiv" 3)
--- a/scaffold/argv.kaem
+++ b/scaffold/argv.kaem
@ -24,15 +24,14 @@ mes_cpu=${mes_cpu:-x86}
 stage0_cpu=${stage0_cpu:-x86}

 M2-Planet                                       \
-    --bootstrap-mode                            \
    --debug                                     \
    --architecture ${stage0_cpu}                \
-    -f include/m2/lib.h                         \
+    -f include/mes/lib-mini.h                   \
    -f lib/linux/${mes_cpu}-mes-m2/crt1.c       \
    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
    -f lib/string/strlen.c                      \
-    -f lib/mes/mini-write.c                     \
+    -f lib/mes/write.c                          \
    -f lib/mes/eputs.c                          \
    -f lib/string/strcmp.c                      \
    -f scaffold/argv.c                          \
--- a/scaffold/global-array.kaem
+++ b/scaffold/global-array.kaem
@ -30,7 +30,7 @@ M2-Planet                                       \
    -f lib/mes/globals.c                        \
    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
-    -f lib/mes/mini-write.c                     \
+    -f lib/mes/write.c                          \
    -f lib/string/strlen.c                      \
    -f lib/string/strcpy.c                      \
    -f lib/mes/eputs.c                          \
--- a/scaffold/hello.kaem
+++ b/scaffold/hello.kaem
@ -24,15 +24,14 @@ mes_cpu=${mes_cpu:-x86}
 stage0_cpu=${stage0_cpu:-x86}

 M2-Planet                                       \
-    --bootstrap-mode                            \
    --debug                                     \
    --architecture ${stage0_cpu}                \
-    -f include/m2/lib.h                         \
+    -f include/mes/lib-mini.h                   \
    -f lib/linux/${mes_cpu}-mes-m2/crt1.c       \
    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
    -f lib/string/strlen.c                      \
-    -f lib/mes/mini-write.c                     \
+    -f lib/mes/write.c                          \
    -f lib/mes/eputs.c                          \
    -f scaffold/hello.c                         \
    -o scaffold/hello.M1
--- a/scaffold/local-array.kaem
+++ b/scaffold/local-array.kaem
@ -30,7 +30,7 @@ M2-Planet                                       \
    -f lib/mes/globals.c                        \
    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
-    -f lib/mes/mini-write.c                     \
+    -f lib/mes/write.c                          \
    -f lib/string/strlen.c                      \
    -f lib/string/strcpy.c                      \
    -f lib/mes/eputs.c                          \
--- a/scaffold/local-static-array.kaem
+++ b/scaffold/local-static-array.kaem
@ -30,7 +30,7 @@ M2-Planet                                       \
    -f lib/mes/globals.c                        \
    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
-    -f lib/mes/mini-write.c                     \
+    -f lib/mes/write.c                          \
    -f lib/string/strlen.c                      \
    -f lib/string/strcpy.c                      \
    -f lib/mes/eputs.c                          \
--- a/scaffold/main.kaem
+++ b/scaffold/main.kaem
@ -24,7 +24,6 @@ mes_cpu=${mes_cpu:-x86}
 stage0_cpu=${stage0_cpu:-x86}

 M2-Planet                                       \
-    --bootstrap-mode                            \
    --debug                                     \
    --architecture ${stage0_cpu}                \
    -f lib/linux/${mes_cpu}-mes-m2/crt1.c       \
--- a/scaffold/read.kaem
+++ b/scaffold/read.kaem
@ -24,28 +24,29 @@ mes_cpu=${mes_cpu:-x86}
 stage0_cpu=${stage0_cpu:-x86}

 M2-Planet                                       \
-    --bootstrap-mode                            \
    --debug                                     \
    --architecture ${stage0_cpu}                \
-    -f include/m2/lib.h                         \
    -f lib/linux/${mes_cpu}-mes-m2/crt1.c       \
-    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
+    -f include/mes/lib-mini.h                   \
    -f lib/linux/${mes_cpu}-mes-m2/_write.c     \
-    -f lib/linux/${mes_cpu}-mes-m2/syscall.c    \
+    -f lib/linux/${mes_cpu}-mes-m2/_exit.c      \
    -f include/linux/${mes_cpu}/syscall.h       \
+    -f lib/linux/${mes_cpu}-mes-m2/syscall.c    \
    -f lib/m2/cast.c                            \
+    -f include/mes/lib.h                        \
    -f lib/string/strlen.c                      \
-    -f lib/mes/mini-write.c                     \
+    -f lib/mes/write.c                          \
    -f lib/mes/eputs.c                          \
    -f lib/linux/brk.c                          \
-    -f lib/m2/malloc.c                          \
+    -f lib/linux/malloc.c                       \
    -f lib/string/memset.c                      \
-    -f lib/m2/read.c                            \
+    -f lib/linux/read.c                         \
    -f lib/mes/fdgetc.c                         \
    -f lib/stdio/getchar.c                      \
    -f lib/stdio/putchar.c                      \
-    -f lib/m2/open.c                            \
-    -f lib/m2/mes_open.c                        \
+    -f lib/linux/open.c                         \
+    -f include/sys/types.h                      \
+    -f include/stdio.h                          \
    -f scaffold/read.c                          \
    -o scaffold/read.M1

--- a/simple.make
+++ b/simple.make
@ -1,6 +1,6 @@
 # GNU Mes --- Maxwell Equations of Software
 # Copyright © 2019 Jeremiah Orians <jeremiah@pdp10.guru>
-# Copyright © 2018,2019,2020,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+# Copyright © 2018,2019,2020,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 #
 # This file is part of GNU Mes.
 #
@ -76,20 +76,26 @@ M2_SOURCES =					\
 lib/linux/x86-mes-m2/crt1.c			\
 lib/linux/x86-mes-m2/_exit.c			\
 lib/linux/x86-mes-m2/_write.c			\
+ lib/mes/globals.c				\
 lib/m2/cast.c					\
- lib/m2/exit.c					\
- lib/mes/write.c				\
+ lib/stdlib/exit.c				\
+ lib/stub/__buffered_read.c			\
 lib/linux/x86-mes-m2/syscall.c			\
+ lib/stub/__raise.c				\
 lib/linux/brk.c				\
- lib/stdlib/malloc.c				\
+ lib/linux/malloc.c				\
 lib/string/memset.c				\
-						\
- lib/m2/read.c					\
+ lib/linux/read.c				\
 lib/mes/fdgetc.c				\
+ lib/linux/lseek.c				\
+ lib/posix/write.c				\
+						\
 lib/stdio/getchar.c				\
 lib/stdio/putchar.c				\
- lib/m2/open.c					\
- lib/m2/mes_open.c				\
+ lib/stub/__buffered_read.c			\
+ lib/linux/_open3.c				\
+ lib/linux/open.c				\
+ lib/mes/mes_open.c				\
 lib/string/strlen.c				\
 lib/mes/eputs.c				\
 lib/mes/fdputc.c				\
@ -118,15 +124,16 @@ M2_SOURCES =					\
 lib/mes/fdungetc.c				\
 lib/posix/setenv.c				\
 lib/linux/access.c				\
- lib/m2/chmod.c					\
+ lib/linux/chmod.c				\
 lib/linux/ioctl3.c  				\
 lib/m2/isatty.c				\
 lib/linux/fork.c				\
 lib/m2/execve.c				\
 lib/m2/execv.c					\
- lib/m2/waitpid.c				\
+ lib/linux/wait4.c				\
+ lib/linux/waitpid.c				\
 lib/linux/gettimeofday.c			\
- lib/m2/clock_gettime.c				\
+ lib/linux/clock_gettime.c			\
 lib/m2/time.c					\
 lib/linux/_getcwd.c				\
 lib/m2/getcwd.c				\
@ -137,12 +144,6 @@ M2_SOURCES =					\
 lib/linux/unlink.c				\
 src/m2.c

-M2_TODO =					\
- lib/m2/file_print.c				\
- lib/mes/ntoab.c				\
- lib/mes/fdgetc.c				\
- lib/mes/fdungetc.c
-
 INCLUDES =					\
 include/mes/builtins.h				\
 include/mes/constants.h			\
@ -186,8 +187,19 @@ bin/gc-gcc: simple.make $(GCC_SOURCES) $(TEST_GC_SOURCES) $(INCLUDES) | bin
 	$(CC) $(CFLAGS) -D GC_TEST=1 $(GCC_SOURCES) $(TEST_GC_SOURCES) -o $@

 M2_PLANET_INCLUDES =				\
- include/m2/lib.h				\
+ include/mes/config.h				\
+ include/mes/lib-mini.h				\
+ include/mes/lib.h				\
 include/linux/x86/syscall.h			\
+ include/time.h					\
+ include/sys/time.h				\
+ include/sys/types.h				\
+ include/stdio.h				\
+ include/limits.h				\
+ include/sys/resource.h				\
+ include/sys/stat.h				\
+ include/fcntl.h				\
+ include/signal.h				\
 include/mes/mes.h				\
 include/mes/builtins.h				\
 include/mes/constants.h			\
@ -216,12 +228,12 @@ m2/mes-m2.hex2: m2/mes-m2.blood-elf.M1
 	    -o $@

 bin/mes-m2: m2/mes-m2.hex2
-	hex2					\
-	    --architecture $(M2_PLANET_ARCH)	\
-	    --little-endian			\
-	    --base-address 0x1000000		\
-	    -f lib/x86-mes/elf32-header.hex2	\
-	    -f m2/mes-m2.hex2			\
+	hex2						\
+	    --architecture $(M2_PLANET_ARCH)		\
+	    --little-endian				\
+	    --base-address 0x1000000			\
+	    -f lib/linux/x86-mes/elf32-header.hex2	\
+	    -f m2/mes-m2.hex2				\
 	    -o $@
 	cp -f $@ bin/mes

--- a/simple.sh
+++ b/simple.sh
@ -36,47 +36,48 @@ cat > include/mes/config.h <<EOF
 EOF

 ## Build ##
-gcc -g -D HAVE_CONFIG_H=1 -I include\
-    -o out-system-libc/mes\
-    \
-    lib/mes/eputs.c\
-    lib/mes/oputs.c\
-    \
-    lib/mes/cast.c\
-    lib/mes/itoa.c\
-    lib/mes/ltoa.c\
-    lib/mes/ltoab.c\
-    lib/mes/ultoa.c\
-    lib/mes/utoa.c\
-    lib/mes/eputc.c\
-    lib/mes/fdgetc.c\
-    lib/mes/fdputc.c\
-    lib/mes/fdputs.c\
-    lib/mes/fdungetc.c\
-    lib/mes/mes_open.c\
-    lib/mes/ntoab.c\
-    lib/mes/oputc.c\
-    \
-    lib/mes/__assert_fail.c\
-    lib/mes/assert_msg.c\
-    \
-    src/builtins.c\
-    src/cc.c\
-    src/core.c\
-    src/display.c\
-    src/eval-apply.c\
-    src/gc.c\
-    src/hash.c\
-    src/lib.c\
-    src/math.c\
-    src/mes.c\
-    src/module.c\
-    src/posix.c\
-    src/reader.c\
-    src/stack.c\
-    src/string.c\
-    src/struct.c\
-    src/symbol.c\
+gcc -g -D HAVE_CONFIG_H=1 -I include            \
+    -o out-system-libc/mes                      \
+                                                \
+    lib/mes/eputs.c                             \
+    lib/mes/oputs.c                             \
+                                                \
+    lib/mes/cast.c                              \
+    lib/mes/itoa.c                              \
+    lib/mes/ltoa.c                              \
+    lib/mes/ltoab.c                             \
+    lib/mes/ultoa.c                             \
+    lib/mes/utoa.c                              \
+    lib/mes/eputc.c                             \
+    lib/mes/fdgetc.c                            \
+    lib/mes/fdputc.c                            \
+    lib/mes/fdputs.c                            \
+    lib/mes/fdungetc.c                          \
+    lib/mes/mes_open.c                          \
+    lib/mes/ntoab.c                             \
+    lib/mes/oputc.c                             \
+                                                \
+    lib/mes/__assert_fail.c                     \
+    lib/mes/assert_msg.c                        \
+                                                \
+    src/builtins.c                              \
+    src/cc.c                                    \
+    src/core.c                                  \
+    src/display.c                               \
+    src/eval-apply.c                            \
+    src/gc.c                                    \
+    src/globals.c                               \
+    src/hash.c                                  \
+    src/lib.c                                   \
+    src/math.c                                  \
+    src/mes.c                                   \
+    src/module.c                                \
+    src/posix.c                                 \
+    src/reader.c                                \
+    src/stack.c                                 \
+    src/string.c                                \
+    src/struct.c                                \
+    src/symbol.c                                \
    src/vector.c

 ## Check ##
@ -106,7 +107,7 @@ MES_DEBUG=3 MES_ARENA=10000 MES_MAX_ARENA=10000 MES_BOOT=tests/gc.test out-syste
 #          lib/linux/$mes_cpu-mes-mescc/_write.c\
 #          \
 #          lib/mes/globals.c\
-#          lib/mes/mini-write.c\
+#          lib/mes/write.c\
 #          lib/string/strlen.c\
 #          \
 #          scaffold/hello.c
@ -120,7 +121,7 @@ cat                                             \
    lib/linux/$mes_cpu-mes-mescc/_write.c       \
                                                \
    lib/mes/globals.c                           \
-    lib/mes/mini-write.c                        \
+    lib/mes/write.c                             \
    lib/string/strlen.c                         \
                                                \
    scaffold/hello.c                            \
@ -164,115 +165,121 @@ EOF

 ## Build ##
 compiler=gcc     # not configurable
-$CC -g -D HAVE_CONFIG_H=1 -I include -I include/$mes_kernel/$mes_cpu\
-    -nostdinc -nostdlib -fno-builtin -fno-stack-protector\
-    -o out-mes/mes\
-    \
-    lib/linux/$mes_cpu-mes-gcc/crt1.c\
-    \
-    lib/mes/globals.c\
-    lib/mes/eputs.c\
-    lib/mes/oputs.c\
-    \
-    lib/posix/write.c\
-    lib/string/strlen.c\
-    lib/stdlib/puts.c\
-    lib/stdlib/exit.c\
-    lib/$mes_kernel/$mes_cpu-mes-$compiler/_exit.c\
-    lib/$mes_kernel/$mes_cpu-mes-$compiler/_write.c\
-    \
-    lib/mes/cast.c\
-    lib/mes/itoa.c\
-    lib/mes/ltoa.c\
-    lib/mes/ltoab.c\
-    lib/mes/ultoa.c\
-    lib/mes/utoa.c\
-    lib/mes/eputc.c\
-    lib/mes/fdgetc.c\
-    lib/mes/fdputc.c\
-    lib/mes/fdputs.c\
-    lib/mes/fdungetc.c\
-    lib/mes/mes_open.c\
-    lib/mes/ntoab.c\
-    lib/mes/oputc.c\
-    \
-    lib/stdlib/atoi.c\
-    lib/mes/abtol.c\
-    lib/ctype/isdigit.c\
-    lib/ctype/isnumber.c\
-    lib/ctype/isspace.c\
-    lib/ctype/isxdigit.c\
-    \
-    lib/mes/__assert_fail.c\
-    lib/mes/assert_msg.c\
-    lib/mes/__buffered_read.c\
-    lib/mes/__mes_debug.c\
-    lib/posix/execv.c\
-    lib/posix/getcwd.c\
-    lib/posix/getenv.c\
-    lib/posix/isatty.c\
-    lib/posix/open.c\
-    lib/posix/setenv.c\
-    lib/posix/wait.c\
-    lib/stdio/fgetc.c\
-    lib/stdio/fputc.c\
-    lib/stdio/fputs.c\
-    lib/stdio/getc.c\
-    lib/stdio/getchar.c\
-    lib/stdio/putc.c\
-    lib/stdio/putchar.c\
-    lib/stdio/ungetc.c\
-    lib/stdlib/free.c\
-    lib/stdlib/malloc.c\
-    lib/stdlib/realloc.c\
-    lib/string/memchr.c\
-    lib/string/memcmp.c\
-    lib/string/memcpy.c\
-    lib/string/memmove.c\
-    lib/string/memset.c\
-    lib/string/strcmp.c\
-    lib/string/strcpy.c\
-    lib/string/strncmp.c\
-    \
-    lib/linux/lseek.c\
-    \
-    lib/linux/access.c\
-    lib/linux/brk.c\
-    lib/linux/chmod.c\
-    lib/linux/clock_gettime.c\
-    lib/linux/dup.c\
-    lib/linux/dup2.c\
-    lib/linux/execve.c\
-    lib/linux/fork.c\
-    lib/linux/fsync.c\
-    lib/linux/_getcwd.c\
-    lib/linux/gettimeofday.c\
-    lib/linux/ioctl3.c\
-    lib/linux/_open3.c\
-    lib/linux/read.c\
-    lib/linux/_read.c\
-    lib/linux/time.c\
-    lib/linux/unlink.c\
-    lib/linux/waitpid.c\
-    lib/linux/$mes_cpu-mes-$compiler/syscall.c\
-    \
-    src/builtins.c\
-    src/cc.c\
-    src/core.c\
-    src/display.c\
-    src/eval-apply.c\
-    src/gc.c\
-    src/hash.c\
-    src/lib.c\
-    src/math.c\
-    src/mes.c\
-    src/module.c\
-    src/posix.c\
-    src/reader.c\
-    src/stack.c\
-    src/string.c\
-    src/struct.c\
-    src/symbol.c\
+$CC -g -D HAVE_CONFIG_H=1                               \
+    -I include -I include/$mes_kernel/$mes_cpu          \
+       -nostdinc -nostdlib                              \
+    -fno-builtin -fno-stack-protector                   \
+    -o out-mes/mes                                      \
+                                                        \
+    lib/linux/$mes_cpu-mes-gcc/crt1.c                   \
+                                                        \
+    lib/mes/globals.c                                   \
+    lib/mes/eputs.c                                     \
+    lib/mes/oputs.c                                     \
+                                                        \
+    lib/posix/write.c                                   \
+    lib/string/strlen.c                                 \
+    lib/stdlib/puts.c                                   \
+    lib/stdlib/exit.c                                   \
+    lib/$mes_kernel/$mes_cpu-mes-$compiler/_exit.c      \
+    lib/$mes_kernel/$mes_cpu-mes-$compiler/_write.c     \
+                                                        \
+    lib/mes/cast.c                                      \
+    lib/mes/itoa.c                                      \
+    lib/mes/ltoa.c                                      \
+    lib/mes/ltoab.c                                     \
+    lib/mes/ultoa.c                                     \
+    lib/mes/utoa.c                                      \
+    lib/mes/eputc.c                                     \
+    lib/mes/fdgetc.c                                    \
+    lib/mes/fdputc.c                                    \
+    lib/mes/fdputs.c                                    \
+    lib/mes/fdungetc.c                                  \
+    lib/mes/mes_open.c                                  \
+    lib/mes/ntoab.c                                     \
+    lib/mes/oputc.c                                     \
+                                                        \
+    lib/stdlib/atoi.c                                   \
+    lib/mes/abtol.c                                     \
+    lib/ctype/isdigit.c                                 \
+    lib/ctype/isnumber.c                                \
+    lib/ctype/isspace.c                                 \
+    lib/ctype/isxdigit.c                                \
+                                                        \
+    lib/stub/__raise.c                                  \
+    lib/mes/__assert_fail.c                             \
+    lib/mes/assert_msg.c                                \
+    lib/mes/__buffered_read.c                           \
+    lib/mes/__mes_debug.c                               \
+    lib/posix/execv.c                                   \
+    lib/posix/getcwd.c                                  \
+    lib/posix/getenv.c                                  \
+    lib/posix/isatty.c                                  \
+    lib/posix/open.c                                    \
+    lib/posix/setenv.c                                  \
+    lib/posix/wait.c                                    \
+    lib/stdio/fgetc.c                                   \
+    lib/stdio/fputc.c                                   \
+    lib/stdio/fputs.c                                   \
+    lib/stdio/getc.c                                    \
+    lib/stdio/getchar.c                                 \
+    lib/stdio/putc.c                                    \
+    lib/stdio/putchar.c                                 \
+    lib/stdio/ungetc.c                                  \
+    lib/stdlib/free.c                                   \
+    lib/linux/malloc.c                                  \
+    lib/stdlib/realloc.c                                \
+    lib/string/memchr.c                                 \
+    lib/string/memcmp.c                                 \
+    lib/string/memcpy.c                                 \
+    lib/string/memmove.c                                \
+    lib/string/memset.c                                 \
+    lib/string/strcmp.c                                 \
+    lib/string/strcpy.c                                 \
+    lib/string/strncmp.c                                \
+                                                        \
+    lib/linux/lseek.c                                   \
+                                                        \
+    lib/linux/access.c                                  \
+    lib/linux/brk.c                                     \
+    lib/linux/chmod.c                                   \
+    lib/linux/clock_gettime.c                           \
+    lib/linux/dup.c                                     \
+    lib/linux/dup2.c                                    \
+    lib/linux/execve.c                                  \
+    lib/linux/fork.c                                    \
+    lib/linux/fsync.c                                   \
+    lib/linux/_getcwd.c                                 \
+    lib/linux/gettimeofday.c                            \
+    lib/linux/ioctl3.c                                  \
+    lib/linux/_open3.c                                  \
+    lib/linux/read.c                                    \
+    lib/linux/_read.c                                   \
+    lib/linux/time.c                                    \
+    lib/linux/unlink.c                                  \
+    include/sys/resource.h                              \
+    lib/linux/wait4.c                                   \
+    lib/linux/waitpid.c                                 \
+    lib/linux/$mes_cpu-mes-$compiler/syscall.c          \
+                                                        \
+    src/builtins.c                                      \
+    src/cc.c                                            \
+    src/core.c                                          \
+    src/display.c                                       \
+    src/eval-apply.c                                    \
+    src/gc.c                                            \
+    src/globals.c                                       \
+    src/hash.c                                          \
+    src/lib.c                                           \
+    src/math.c                                          \
+    src/mes.c                                           \
+    src/module.c                                        \
+    src/posix.c                                         \
+    src/reader.c                                        \
+    src/stack.c                                         \
+    src/string.c                                        \
+    src/struct.c                                        \
+    src/symbol.c                                        \
    src/vector.c

 ## Check ##
@ -302,7 +309,7 @@ MES_DEBUG=3 MES_ARENA=10000 MES_MAX_ARENA=10000 MES_BOOT=tests/gc.test out-mes/m
 #          lib/linux/$mes_cpu-mes-mescc/_write.c\
 #          \
 #          lib/mes/globals.c\
-#          lib/mes/mini-write.c\
+#          lib/mes/write.c\
 #          lib/string/strlen.c\
 #          \
 #          scaffold/hello.c
@ -316,7 +323,7 @@ cat                                             \
    lib/linux/$mes_cpu-mes-mescc/_write.c       \
                                                \
    lib/mes/globals.c                           \
-    lib/mes/mini-write.c                        \
+    lib/mes/write.c                             \
    lib/string/strlen.c                         \
                                                \
    scaffold/hello.c                            \
--- a/src/core.c
+++ b/src/core.c
@ -148,7 +148,7 @@ length (struct scm *x)
 struct scm *
 error (struct scm *key, struct scm *x)
 {
-#if !__MESC_MES__ && !__M2_PLANET__
+#if !__MESC_MES__ && !__M2__
  struct scm *throw = module_ref (R0, cell_symbol_throw);
  if (throw != cell_undefined)
    return apply (throw, cons (key, cons (x, cell_nil)), R0);
--- a/src/gc.c
+++ b/src/gc.c
@ -1,6 +1,7 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2022 Gabriel Wicki <gabriel@erlikon.ch>
 *
 * This file is part of GNU Mes.
 *
@ -30,9 +31,6 @@

 int g_dump_filedes;

-#define M2_CELL_SIZE 1U
-// CONSTANT M2_CELL_SIZE 12
-
 char *
 cell_bytes (struct scm *x)
 {
@ -40,16 +38,20 @@ cell_bytes (struct scm *x)
  return p + (2 * sizeof (long));
 }

+#if __M2__
+#define U10 10
+#define U100 100
+#else
 #define U10 10U
-// CONSTANT U10 10
 #define U100 100U
-// CONSTANT U100 100
+#endif
+
 void
 gc_init ()
 {
 #if SYSTEM_LIBC
  ARENA_SIZE = 100000000;       /* 2.3GiB */
-#elif ! __M2_PLANET__
+#elif ! __M2__
  ARENA_SIZE = 300000;          /* 32b: 3MiB, 64b: 6 MiB */
 #else
  ARENA_SIZE = 20000000;
@ -326,11 +328,11 @@ void
 gc_up_arena ()
 {
  long old_arena_bytes = (ARENA_SIZE + JAM_SIZE) * sizeof (struct scm);
-  if (ARENA_SIZE >> 1 < MAX_ARENA_SIZE >> 2)
+  if (ARENA_SIZE / 2 < MAX_ARENA_SIZE / 4)
    {
-      ARENA_SIZE = ARENA_SIZE << 1;
-      JAM_SIZE = JAM_SIZE << 1;
-      GC_SAFETY = GC_SAFETY << 1;
+      ARENA_SIZE = ARENA_SIZE * 2;
+      JAM_SIZE = JAM_SIZE * 2;
+      GC_SAFETY = GC_SAFETY * 2;
    }
  else
    ARENA_SIZE = MAX_ARENA_SIZE - JAM_SIZE;
@ -448,7 +450,7 @@ void
 gc_flip ()
 {
  if (g_free - g_news > JAM_SIZE)
-    JAM_SIZE = (g_free - g_news) + ((g_free - g_news) / 2);
+    JAM_SIZE = ((g_free - g_news) * 3) / 2;

  cell_arena = g_cells - M2_CELL_SIZE; /* For debugging. */
  gc_cellcpy (g_cells, g_news, (g_free - g_news) / M2_CELL_SIZE);
--- a/src/math.c
+++ b/src/math.c
@ -37,6 +37,12 @@ assert_number (char const *name, struct scm *x)
    }
 }

+#define CAR(x) x->car
+#define CDR(x) x->cdr
+#define VALUE(x) x->value
+#define TYPE(x) x->type
+#define MAKE_NUMBER(x) make_number (x)
+
 struct scm *
 greater_p (struct scm *x)               /*:((name . ">") (arity . n)) */
 {
@ -143,7 +149,31 @@ plus (struct scm *x)                    /*:((name . "+") (arity . n)) */
 }

 struct scm *
-divide (struct scm *x)                  /*:((name . "/") (arity . n)) */
+divide_023 (struct scm *x)                  /*:((name . "/") (arity . n)) */
+{
+  long n = 1;
+  if (x != cell_nil)
+    {
+      assert_number ("divide", CAR (x));
+      n = VALUE (car (x));
+      x = cdr (x);
+    }
+  while (x != cell_nil)
+    {
+      assert_number ("divide", CAR (x));
+      long y = VALUE (CAR (x));
+      if (y == 0)
+        error (cstring_to_symbol ("divide-by-zero"), x);
+      if (!n)
+        break;
+      n /= y;
+      x = cdr (x);
+    }
+  return MAKE_NUMBER (n);
+}
+
+struct scm *
+divide_024 (struct scm *x)                  /*:((name . "/") (arity . n)) */
 {
  long n = 1;
  struct scm *i;
@ -186,7 +216,38 @@ divide (struct scm *x)                  /*:((name . "/") (arity . n)) */
 }

 struct scm *
-modulo (struct scm *a, struct scm *b)
+divide (struct scm *a)
+{
+  struct scm* r23 = divide_023 (a);
+  struct scm* r24 = divide_024 (a);
+  if (r23->value != r24->value)
+    {
+      eputs ("divide!\n");
+      eputs ("a="); eputs (itoa (a->car->value)); eputs (",");
+      eputs ("b="); eputs (itoa (a->cdr->car->value)); eputs ("\n");
+      eputs ("23="); eputs (itoa (r23->value)); eputs ("\n");
+      eputs ("24="); eputs (itoa (r24->value)); eputs ("\n");
+    }
+  return r24;
+}
+
+struct scm *
+modulo_023 (struct scm *a, struct scm *b)
+{
+  assert_number ("modulo", a);
+  assert_number ("modulo", b);
+  long x = VALUE (a);
+  long y = VALUE (b);
+  if (y == 0)
+    error (cstring_to_symbol ("divide-by-zero"), a);
+  while (x < 0)
+    x += y;
+  x = x ? x % y : 0;
+  return MAKE_NUMBER (x);
+}
+
+struct scm *
+modulo_024 (struct scm *a, struct scm *b)
 {
  assert_number ("modulo", a);
  assert_number ("modulo", b);
@ -204,14 +265,38 @@ modulo (struct scm *a, struct scm *b)
  while (n < 0)
    n = n + w;
  size_t u = n;
+#if 0
  if (u != 0)
    u = u % w;
  n = u;
+#elif 0
+  if (n != 0)
+    n = n % w;
+#else
+  if (u != 0)
+    n = u % w;
+#endif
  if (sign_p)
    n = -n;
  return make_number (n);
 }

+struct scm *
+modulo (struct scm *a, struct scm *b)
+{
+  struct scm* r23 = modulo_023 (a, b);
+  struct scm* r24 = modulo_024 (a, b);
+  if (r23->value != r24->value)
+    {
+      eputs ("modulo!\n");
+      eputs ("a="); eputs (itoa (a->value)); eputs (",");
+      eputs ("b="); eputs (itoa (b->value)); eputs ("\n");
+      eputs ("23="); eputs (itoa (r23->value)); eputs ("\n");
+      eputs ("24="); eputs (itoa (r24->value)); eputs ("\n");
+    }
+  return r24;
+}
+
 struct scm *
 multiply (struct scm *x)                /*:((name . "*") (arity . n)) */
 {
--- a/src/posix.c
+++ b/src/posix.c
@ -35,7 +35,7 @@
 #include <unistd.h>

 #if SYSTEM_LIBC
-#define __raise(x) -1
+//#define __raise(x) -1
 #endif

 struct scm *
@ -377,13 +377,14 @@ waitpid_ (struct scm *pid, struct scm *options)
  return cons (make_number (child), make_number (status));
 }

-#if __x86_64__
+#if __M2__
+/* Milliseconds for everyone else.  */
+#define TIME_UNITS_PER_SECOND 1000
+#elif __x86_64__
 /* Nanoseconds on 64-bit systems with POSIX timers.  */
-// CONSTANT TIME_UNITS_PER_SECOND 1000000000
 #define TIME_UNITS_PER_SECOND 1000000000U
 #else
 /* Milliseconds for everyone else.  */
-// CONSTANT TIME_UNITS_PER_SECOND 1000
 #define TIME_UNITS_PER_SECOND 1000U
 #endif

@ -408,8 +409,12 @@ gettimeofday_ ()                /*:((name . "gettimeofday")) */
  return cons (make_number (time->tv_sec), make_number (time->tv_usec));
 }

+#if __M2__
+#define UL1000000000 1000000000
+#else
 #define UL1000000000 1000000000UL
-// CONSTANT UL1000000000 1000000000
+#endif
+
 long
 seconds_and_nanoseconds_to_long (long s, long ns)
 {
--- a/src/symbol.c
+++ b/src/symbol.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -23,16 +23,6 @@

 #include <string.h>

-// char const *MES_VERSION = "0.23";
-
-#if __M2_PLANET__
-#define M2_CELL_SIZE 12
-// CONSTANT M2_CELL_SIZE 12
-#else
-#define M2_CELL_SIZE 1
-// CONSTANT M2_CELL_SIZE 12
-#endif
-
 struct scm *
 init_symbol (struct scm *x, long type, char const *name)
 {
--- a/src/test/gc.c
+++ b/src/test/gc.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -24,9 +24,6 @@
 #include <stdlib.h>
 #include <string.h>

-#define M2_CELL_SIZE 1
-// CONSTANT M2_CELL_SIZE 12
-
 int g_debug;

 void
--- a/src/vector.c
+++ b/src/vector.c
@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2016,2017,2018,2019,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
@ -21,14 +21,6 @@
 #include "mes/lib.h"
 #include "mes/mes.h"

-#if __M2_PLANET__
-#define M2_CELL_SIZE 12
-// CONSTANT M2_CELL_SIZE 12
-#else
-#define M2_CELL_SIZE 1
-// CONSTANT M2_CELL_SIZE 12
-#endif
-
 struct scm *
 make_vector_ (long k, struct scm *e)
 {
Author	SHA1	Message	Date
Jan (janneke) Nieuwenhuizen	bdb9e83978	ARM: Fix unsigned modulo. * lib/arm-mes/arm.M1 (mov____%esp,%r3): New macro. * module/mescc/armv4/as.scm (armv4:r0%r1): Use it to avoid overwriting %r0 before caling __mesabi_uldiv.	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	f3993ad26f	STUK!	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	b07618819f	wip	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	89c21c5fe7	wip	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	298420cffe	wip	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	d47f02aee2	wip	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	1985a85be0	wip	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	8a531e0f1d	DRAFT test: Add 60-math-modulo.c. * lib/tests/scaffold/60-math-modulo.c: New test. * build-aux/check-mescc.sh (mes_tests): Add it.	2022-09-12 09:50:57 +02:00
Jan (janneke) Nieuwenhuizen	163436cff7	still ok => modulo is problematic	2022-09-11 23:04:24 +02:00
Jan (janneke) Nieuwenhuizen	bacdf3bf70	remove cruft	2022-09-11 22:41:27 +02:00
Jan (janneke) Nieuwenhuizen	f69f6e412e	still OK	2022-09-11 22:39:42 +02:00
Jan (janneke) Nieuwenhuizen	4699c1913d	HACK core: Revert math.c -- fixes arm-fsb.s	2022-09-11 22:28:07 +02:00
Jan (janneke) Nieuwenhuizen	6db1ec242c	Revert "guix: Update package inputs to new style." This reverts commit `22f24be26a`.	2022-06-01 17:40:20 +02:00
Jan (janneke) Nieuwenhuizen	675b90b824	squash! PORTING gcc minus @7	2022-06-01 14:26:55 +02:00
Jan (janneke) Nieuwenhuizen	9d32bfe92b	squash! PORTING guile2.2	2022-06-01 14:24:34 +02:00
Jan (janneke) Nieuwenhuizen	ffe0e2c1c7	mescc: Only use signed division when numerator is signed. Currently, sign-extension (CLTD vs XOR EDX) and signed division (IDIV vs DIV) selected by setting "signed?". See, module/mescc/x86/as.scm. Possibly we need a signed? based on numerator and denominator, and add a extend-sign? based on the signedness of the numerator? * module/mescc/compile.scm (expr->register): Base "signed?" strictly on signedness of numerator.	2022-06-01 14:03:09 +02:00
Jan (janneke) Nieuwenhuizen	95b26ccf6a	Revert "mescc: Only use signed division when numerator is signed." This breaks the --with-bootstrap build and the Guix bootstrap on ARM. This reverts commit `348dcbcbd7`.	2022-05-30 06:46:32 +02:00
Jan (janneke) Nieuwenhuizen	11ef9fa229	WIP ARM: Use mes-style crt1.M1.	2022-05-21 16:09:28 +02:00
Jan (janneke) Nieuwenhuizen	8be532e09c	core: Move M2_PTR_SIZE, M2_CELL_SIZE to include file. * lib/posix/getenv.c (M2_PTR_SIZE), lib/posix/setenv.c (M2_PTR_SIZE): Move definition... * include/mes/lib-mini.h (M2_PTR_SIZE): ...here. * src/gc.c (M2_CELL_SIZE), src/symbol.c (M2_CELL_SIZE), src/test/gc.c (M2_CELL_SIZE), src/vector.c (M2_CELL_SIZE): Move definition... * include/mes/mes.h (M2_CELL_SIZE): ...here.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	391210574e	scaffold: Remove obsolete malloc. * scaffold/lib/stdlib/malloc.c: Remove.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	a4dd86eaa9	wait4: include mes/lib.h for cast	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	03a374750c	time.c: include sys/time for gettimeofday	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	eb59ffa1a9	linux/read.c remove extra mes.h include.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	798fe13c16	lib: linux: Add wait4. * lib/linux/waitpid.c (waitpid): Factor-out wait4 call to... * lib/linux/wait4.c: ...new file here. * include/sys/wait.h (wait4): Add prototype. Include sys/resource.h. * include/sys/resource.h (struct rusage): Remove gratuitous "int" for M2-Planet. * build-aux/configure-lib.sh (libc_SOURCES): Add it. * kaem.run, simple.make (M2_SOURCES), simple.sh: Likewise. Also add resource.h.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	c0820603e8	lib: linux/time: Remove SYS_time specialization. * lib/linux/time.c (time)[SYS_time]: Remove specialization. [!SYS_time && !SYS_gettimeofday]: Remove fallback.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	9ab69b6820	kaem: Add kaem.arm and kaem.x86. * kaem.arm, kaem.x86: New files.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	b693b8f7ca	squash! lib: ntoab: M2-Planet Compile fix. This is a follow-up to commit 67120c3a21f58308b08b1ddc00ca11a335116577 DRAFT kaem.run: Remove --bootstrap-mode. * lib/mes/ntoab.c: Use defined in #if.	2022-05-21 16:09:10 +02:00
Jan (janneke) Nieuwenhuizen	3b29c700b4	DRAFT kaem.run: Remove --bootstrap-mode. * include/linux/arm/syscall.h, include/linux/x86/syscall.h, include/mes/constants.h: Remove CONSTANTs. * lib/m2/open.c: Move to... * lib/linux/open.c: ...here. Update to make gcc-compatible. * scaffold/argv.kaem: Update accordingly. * lib/linux/lseek.c (lseek): Suport M2-Planet. * lib/linux/waitpid.c (waitpid): Suport M2-Planet. * lib/m2/getcwd.c (PATH_MAX): Remove CONSTANT. * lib/m2/isatty.c (TCGETS): Remove CONSTANT. * lib/mes/ntoab.c: Support M2-Planet. * lib/posix/getcwd.c (__getcwd_buf): Remove. * lib/posix/getenv.c (M2_PTR_SIZE)[__M2__]: Update to #define. * lib/posix/setenv.c: Likewise. * lib/stub/__raise.c (SIGABRT): Remove CONSTANT. * src/core.c (error): Use __M2__ instead of __M2_PLANET__. * src/gc.c (M2_CELL_SIZE)[__M2__]: Update to #define. Support non-bootstrap-mode. * src/posix.c: Likewise. * src/symbol.c: Likewise. * src/vector.c: Likewise. * kaem.run: Remove --botstrap-mode. Update source list accordingly. * simple.make (M2_PLANET_FLAGS): Remove --bootstrap-mode. * simple.make (M2_SOURCES, M2_PLANET_INCLUDES): Update source list accordingly.	2022-05-21 16:09:09 +02:00
Jan (janneke) Nieuwenhuizen	fe3dcc66d4	lib: posix/open: Support M2-Planet. * lib/posix/open.c (open)[__M2__]: New function.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	b6d33fd3b2	lib: linux/_open3: Support M2-Planet. * lib/linux/_open3.c (_open3): Use function casting. Also call __ungetc_init. * lib/stub/__buffered_read.c: New file.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	9232eaf7bc	kaem: read: Remove --bootstrap-mode. * include/mes/lib.h[__M2__](__call_at_exit,abtod,dtoab,ultoa, * include/sys/types.h[__M2__]: Fall back to unsigned instead of using unsigned long. * include/stdio.h[__M2__](fprintf, fscanf, printf, snprintf, sprintf, sscanf): Hide prototypes. * lib/stdlib/exit.c (exit)[__M2__]: Hide call to __call_at_exit. * lib/linux/read.c (read)[__M2__]: Hide debugging. * lib/linux/malloc.c (malloc)[__M2__]: Hide alignment. __mesabi_umod, __mesabi_udiv, __mesabi_uldiv): Hide prototypes. * scaffold/argv.kaem: Use them together with lib/mes/lib-mini.h instead of lib/mes/* specializations. Remove --bootstrap-mode from M2-Planet call.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	ccd1f64a53	kaem: argv: Remove --bootstrap-mode. * scaffold/argv.kaem: Use lib/mes/lib-mini.h instead of lib/m2/lib.h. Remove --bootstrap-mode from M2-Planet call.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	11e291200c	kaem: hello: Remove --bootstrap-mode. * include/mes/lib-mini.h: Remove M2 bootstrap constants. [__M2__](size_t): Fall-back to unsigned instead of unsigned long. * scaffold/hello.kaem: Use it instead of lib/m2/lib.h. Remove --bootstrap-mode from M2-Planet call.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	3112b851b0	kaem: main: Remove --bootstrap-mode. * scaffold/main.kaem: Remove --bootstrap-mode from M2-Planet call.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	13a619b713	simple.sh: Resurrect. * simple.sh: Add src/globals.c, lib/stub/__raise.c. Use lib/linux/malloc.c instead of lib/stdlib/malloc.c.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	022a6b9936	simple.make: Resurrect. * simple.make (M2_PLANET_FLAGS): Add --bootstrap-mode. (M2_SOURCES): Use lib/mes/mini-write.c instead of lib/mes/write.c	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	607a918686	lib: linux/read: Fix compile warnings. * lib/linux/read.c (read): Cast filedes, buffer to long.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	ded879f087	kaem: Fix version. * src/symbol.c (MES_VERSION): Update to 0.24.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	947898bd70	lib: mes/write: Rename from mes/mini-write.c * lib/mes/mini-write.c: Move to... * lib/mes/write.c: ...here. * build-aux/configure-lib.sh, kaem.run, scaffold/argv.kaem, scaffold/global-array.kaem, scaffold/hello.kaem, scaffold/local-array.kaem, scaffold/local-static-array.kaem, scaffold/read.kaem, simple.make, simple.sh: Update accordingly.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	5a22ea4845	build: Cater for colliding basename in C sources. This is a follow-up to commit `f785f8d560` build: Fix --with-bootstrap build. * build-aux/cc.sh: Retain directory name in object file name. * build-aux/bootstrap.sh.in: Likewise. Compile crt1.c from local directory. * build-aux/build-lib.sh: Likewise. * build-aux/build.sh.in: Remove globals.o hack.	2022-05-21 16:08:27 +02:00
Jan (janneke) Nieuwenhuizen	d6f09c560a	guix: m2-planet: Update to 1.10.0. * guix/git/mes.scm (m2-planet): Update to 1.10.0.	2022-05-21 14:18:39 +02:00
Gabriel Wicki	b14d08251f	core: Simplify math expressions. * src/gc.c (gc_up_arena): Use division instead of shift. (gc_flip): Simplify (free-news) * 1.5.	2022-05-21 14:18:38 +02:00
Jan (janneke) Nieuwenhuizen	aa7f82a495	build: Also use stage0_cpu detection in bootstrap.sh build. * build-aux/build-scaffold.sh: Include cflags.sh. (stage0_cpu): Move to... * build-aux/cflags.sh (stage0_cpu): ...here. * build-aux/build.sh.in (stage0_cpu): Remove.	2022-05-21 14:18:10 +02:00