80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "mes/lib-mini.h"
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int main (int argc, char *argv[], char *envp[]);
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int
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_start ()
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{
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asm ("mov____$i8,%rax !0");
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asm ("mov____%rax,0x32 &__stdin");
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asm ("mov____$i8,%rax !1");
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asm ("mov____%rax,0x32 &__stdout");
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asm ("mov____$i8,%rax !2");
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asm ("mov____%rax,0x32 &__stderr");
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#if 0 //MES_CCAMD64
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asm ("add____$i32,%rbp %0x80"); // FIXME: corresponds to x86_64/as.scm function-preamble-fu
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#endif
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asm ("mov____%rbp,%rax");
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asm ("add____$i8,%rax !8");
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asm ("mov____(%rax),%rax");
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asm ("add____$i8,%rax !0x03");
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asm ("shl____$i8,%rax !0x03");
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asm ("add____%rbp,%rax");
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// FIXME: 64-bit addresses...
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asm ("mov____%rax,0x32 &environ");
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#if 0 //MES_CCAMD64
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asm ("mov____%rax,%rdx"); // amd
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#else
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asm ("push___%rax"); // bootstrap
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#endif
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asm ("mov____%rbp,%rax");
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asm ("add____$i8,%rax !16");
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#if 0 //MES_CCAMD64
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asm ("mov____%rax,%rsi"); // amd
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#else
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asm ("push___%rax"); // bootstrap
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#endif
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asm ("mov____%rbp,%rax");
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asm ("add____$i8,%rax !8");
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asm ("mov____(%rax),%rax");
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#if 0 //MES_CCAMD64
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asm ("mov____%rax,%rdi"); // amd
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#else
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asm ("push___%rax"); // bootstrap
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#endif
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main ();
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asm ("mov____%rax,%rdi");
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asm ("mov____$i32,%rax %0x3c");
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asm ("syscall");
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asm ("hlt");
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}
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