c2c3554884
* lib/libc.c (__mes_debug): New function. Use it for debug printing and in stubs throughout.
161 lines
3 KiB
C
161 lines
3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of Mes.
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*
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* 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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* 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 Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <setjmp.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <signal.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include <unistd.h>
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int errno;
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void
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longjmp (jmp_buf env, int val)
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{
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val = val == 0 ? 1 : val;
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asm ("mov 0xc(%ebp),%eax\n\t" // val
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"mov 0x8(%ebp),%ebp\n\t" // env*
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"mov 0x4(%ebp),%ebx\n\t" // env->__pc
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"mov 0x8(%ebp),%esp\n\t" // env->__sp
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"mov 0x0(%ebp),%ebp\n\t" // env->__bp
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"jmp *%ebx\n\t" // jmp *PC
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);
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// not reached
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exit (42);
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}
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#if 0
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int
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setjmp_debug (jmp_buf env, int val)
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{
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int i;
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#if 1
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i = env->__bp;
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i = env->__pc;
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i = env->__sp;
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#else
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i = env[0].__bp;
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i = env[0].__pc;
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i = env[0].__sp;
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#endif
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return val == 0 ? 1 : val;
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}
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#endif
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int
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setjmp (jmp_buf env)
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{
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int *p = (int*)&env;
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env[0].__bp = p[-2];
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env[0].__pc = p[-1];
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env[0].__sp = (int)&env;
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return 0;
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}
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unsigned long long
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__udivdi3 (unsigned long long a, unsigned long long b)
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{
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int ai = a;
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int bi = b;
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return ai / bi;
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}
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unsigned long long
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__umoddi3 (unsigned long long a, unsigned long long b)
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{
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int ai = a;
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int bi = b;
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return ai % bi;
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}
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unsigned long long
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__lshrdi3 (unsigned long long a, int b)
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{
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return a >> b;
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}
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long long
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__ashldi3 (long long a, int b)
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{
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return a << b;
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}
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long long
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__ashrdi3 (long long a, int b)
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{
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return a >> b;
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}
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long double
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__floatundixf (unsigned long long a)
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{
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static int stub = 0;
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if (__mes_debug () && !stub)
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eputs ("__floatundix stub\n");
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stub = 1;
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return 0;
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}
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unsigned long long
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__fixunsxfdi (double a1)
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{
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static int stub = 0;
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if (__mes_debug () && !stub)
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eputs ("__fixunsxfdi stub\n");
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stub = 1;
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return 0;
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}
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unsigned long long
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__fixdfdi (double a1)
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{
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static int stub = 0;
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if (__mes_debug () && !stub)
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eputs ("__fixdfdi stub\n");
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stub = 1;
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return 0;
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}
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unsigned long long
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__fixxfdi (double a1)
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{
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static int stub = 0;
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if (__mes_debug () && !stub)
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eputs ("__fixxfdi stub\n");
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stub = 1;
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return 0;
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}
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unsigned long long
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__fixsfdi (double a1)
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{
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static int stub = 0;
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if (__mes_debug () && !stub)
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eputs ("__fixsfdi stub\n");
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stub = 1;
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return 0;
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}
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