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001 /* Copyright (C) 2005 David Decotigny 001 /* Copyright (C) 2005 David Decotigny 002 002 003 This program is free software; you can redi 003 This program is free software; you can redistribute it and/or 004 modify it under the terms of the GNU Genera 004 modify it under the terms of the GNU General Public License 005 as published by the Free Software Foundatio 005 as published by the Free Software Foundation; either version 2 006 of the License, or (at your option) any lat 006 of the License, or (at your option) any later version. 007 007 008 This program is distributed in the hope tha 008 This program is distributed in the hope that it will be useful, 009 but WITHOUT ANY WARRANTY; without even the 009 but WITHOUT ANY WARRANTY; without even the implied warranty of 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 011 GNU General Public License for more details 011 GNU General Public License for more details. 012 012 013 You should have received a copy of the GNU 013 You should have received a copy of the GNU General Public License 014 along with this program; if not, write to t 014 along with this program; if not, write to the Free Software 015 Foundation, Inc., 59 Temple Place - Suite 3 015 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 016 USA. 016 USA. 017 */ 017 */ 018 018 019 #include <crt.h> 019 #include <crt.h> 020 #include <libc.h> 020 #include <libc.h> 021 #include <stdarg.h> 021 #include <stdarg.h> 022 #include <debug.h> 022 #include <debug.h> 023 023 024 /** 024 /** 025 * @file myprog9.c 025 * @file myprog9.c 026 * 026 * 027 * mmap/munmap tests 027 * mmap/munmap tests 028 * 028 * 029 * We use the temporary syscall 4004 to dump t 029 * We use the temporary syscall 4004 to dump the list of VRs in the 030 * thread's address space 030 * thread's address space 031 */ 031 */ 032 032 033 int main(void) !! 033 int main() 034 { 034 { 035 char *zoup; 035 char *zoup; 036 int fd; 036 int fd; 037 037 038 fd = open("/dev/zero", O_RDWR); 038 fd = open("/dev/zero", O_RDWR); 039 zoup = mmap((void*)4096, 8*1024*1024, 039 zoup = mmap((void*)4096, 8*1024*1024, 040 PROT_READ | PROT_WRITE, 040 PROT_READ | PROT_WRITE, 041 MAP_SHARED, 041 MAP_SHARED, 042 fd, 34); 042 fd, 34); 043 close(fd); 043 close(fd); 044 044 045 bochs_printf("mapped @%x\n", (unsigned)zoup) 045 bochs_printf("mapped @%x\n", (unsigned)zoup); 046 046 047 /* Do a fork() here to complicate things */ 047 /* Do a fork() here to complicate things */ 048 fork(); 048 fork(); 049 fork(); 049 fork(); 050 050 051 _sos_syscall1(4004, (unsigned)"Initial"); 051 _sos_syscall1(4004, (unsigned)"Initial"); 052 munmap(zoup, 10*4096); 052 munmap(zoup, 10*4096); 053 zoup += 10*4096; 053 zoup += 10*4096; 054 _sos_syscall1(4004, (unsigned)"After munmap 054 _sos_syscall1(4004, (unsigned)"After munmap Low"); 055 055 056 munmap(zoup-4096, 2*4096); 056 munmap(zoup-4096, 2*4096); 057 zoup += 4096; 057 zoup += 4096; 058 _sos_syscall1(4004, (unsigned)"After munmap 058 _sos_syscall1(4004, (unsigned)"After munmap Before Low"); 059 059 060 munmap(zoup-4096, 4096); 060 munmap(zoup-4096, 4096); 061 _sos_syscall1(4004, (unsigned)"After munmap 061 _sos_syscall1(4004, (unsigned)"After munmap Before Low (bis)"); 062 062 063 munmap(zoup + 1024*1024, 4096); 063 munmap(zoup + 1024*1024, 4096); 064 _sos_syscall1(4004, (unsigned)"After munmap 064 _sos_syscall1(4004, (unsigned)"After munmap middle"); 065 065 066 munmap(zoup + 1024*1024, 4096); 066 munmap(zoup + 1024*1024, 4096); 067 _sos_syscall1(4004, (unsigned)"After munmap 067 _sos_syscall1(4004, (unsigned)"After munmap middle (bis)"); 068 068 069 munmap(zoup + 8*1024*1024 - 11*4096 - 4096, 069 munmap(zoup + 8*1024*1024 - 11*4096 - 4096, 4096); 070 _sos_syscall1(4004, (unsigned)"After munmap 070 _sos_syscall1(4004, (unsigned)"After munmap High"); 071 071 072 munmap(zoup + 8*1024*1024 - 11*4096 - 2*4096 072 munmap(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096); 073 _sos_syscall1(4004, (unsigned)"After munmap 073 _sos_syscall1(4004, (unsigned)"After munmap Past High"); 074 074 075 munmap((void*)0x40000000, 0x10000000); 075 munmap((void*)0x40000000, 0x10000000); 076 _sos_syscall1(4004, (unsigned)"After munmap 076 _sos_syscall1(4004, (unsigned)"After munmap Over everything"); 077 077 078 munmap((void*)0x40000000, 0x10000000); 078 munmap((void*)0x40000000, 0x10000000); 079 _sos_syscall1(4004, (unsigned)"After munmap 079 _sos_syscall1(4004, (unsigned)"After munmap Over everything (bis)"); 080 080 081 return 0; 081 return 0; 082 } 082 }
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