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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 /** 025 /** 026 * @file myprog11.c 026 * @file myprog11.c 027 * 027 * 028 * mresize tests 028 * mresize tests 029 * 029 * 030 * We use the temporary syscall 4004 to dump t 030 * We use the temporary syscall 4004 to dump the list of VRs in the 031 * thread's address space 031 * thread's address space 032 */ 032 */ 033 033 034 034 035 int main() 035 int main() 036 { 036 { 037 void * moved; 037 void * moved; 038 char * zoup; 038 char * zoup; 039 int fd; << 040 << 041 fd = open("/dev/zero", O_RDWR); << 042 zoup = mmap((void*)4096, 8*1024*1024, << 043 PROT_READ | PROT_WRITE, << 044 MAP_SHARED, << 045 fd, 34); << 046 close(fd); << 047 039 >> 040 zoup = fakemmap((void*)4096, 8*1024*1024, >> 041 PROT_READ | PROT_WRITE, >> 042 MAP_SHARED, >> 043 "/dev/zero", 34); 048 bochs_printf("mapped @%x\n", (unsigned)zoup) 044 bochs_printf("mapped @%x\n", (unsigned)zoup); 049 045 050 /* Do some forks to complicate things */ 046 /* Do some forks to complicate things */ 051 fork(); 047 fork(); 052 fork(); 048 fork(); 053 049 054 /* First, split the region in slices using a 050 /* First, split the region in slices using a sequence of 055 mprotects */ 051 mprotects */ 056 _sos_syscall1(4004, (unsigned)"Initial"); 052 _sos_syscall1(4004, (unsigned)"Initial"); 057 mprotect(zoup, 10*4096, PROT_READ); 053 mprotect(zoup, 10*4096, PROT_READ); 058 zoup += 10*4096; 054 zoup += 10*4096; 059 _sos_syscall1(4004, (unsigned)"After mprotec 055 _sos_syscall1(4004, (unsigned)"After mprotect Low"); 060 056 061 mprotect(zoup-4096, 2*4096, PROT_READ); 057 mprotect(zoup-4096, 2*4096, PROT_READ); 062 zoup += 4096; 058 zoup += 4096; 063 _sos_syscall1(4004, (unsigned)"After mprotec 059 _sos_syscall1(4004, (unsigned)"After mprotect Before Low"); 064 060 065 mprotect(zoup-4096, 4096, PROT_READ); 061 mprotect(zoup-4096, 4096, PROT_READ); 066 _sos_syscall1(4004, (unsigned)"After mprotec 062 _sos_syscall1(4004, (unsigned)"After mprotect Before low (bis)"); 067 063 068 mprotect(zoup + 1024*1024, 4096, PROT_READ); 064 mprotect(zoup + 1024*1024, 4096, PROT_READ); 069 _sos_syscall1(4004, (unsigned)"After mprotec 065 _sos_syscall1(4004, (unsigned)"After mprotect Middle"); 070 066 071 mprotect(zoup + 1024*1024, 4096, PROT_READ); 067 mprotect(zoup + 1024*1024, 4096, PROT_READ); 072 _sos_syscall1(4004, (unsigned)"After mprotec 068 _sos_syscall1(4004, (unsigned)"After mprotect Middle (bis)"); 073 069 074 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096 070 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096, 4096, PROT_READ); 075 _sos_syscall1(4004, (unsigned)"After mprotec 071 _sos_syscall1(4004, (unsigned)"After mprotect High"); 076 072 077 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*40 073 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, PROT_READ); 078 _sos_syscall1(4004, (unsigned)"After mprotec 074 _sos_syscall1(4004, (unsigned)"After mprotect Past High"); 079 075 080 mprotect((void*)0x40000000, 0x10000000, PROT 076 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 081 _sos_syscall1(4004, (unsigned)"After mprotec 077 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR"); 082 078 083 mprotect((void*)0x40000000, 0x10000000, PROT 079 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 084 _sos_syscall1(4004, (unsigned)"After mprotec 080 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR (bis)"); 085 081 086 /* Now try to resize one of the VR */ 082 /* Now try to resize one of the VR */ 087 moved = zoup + 8*1024*1024 - 11*4096 - 10*40 083 moved = zoup + 8*1024*1024 - 11*4096 - 10*4096; 088 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 084 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, 089 & moved, 40*4096, 0); 085 & moved, 40*4096, 0); 090 _sos_syscall1(4004, (unsigned)"After mremap 086 _sos_syscall1(4004, (unsigned)"After mremap (not allowed)"); 091 bochs_printf("moved=%x\n", (unsigned)moved); 087 bochs_printf("moved=%x\n", (unsigned)moved); 092 088 093 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 089 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 2*4096, 4096, 094 & moved, 40*4096, 0); 090 & moved, 40*4096, 0); 095 _sos_syscall1(4004, (unsigned)"After mremap 091 _sos_syscall1(4004, (unsigned)"After mremap (not allowed - bis)"); 096 bochs_printf("moved=%x\n", (unsigned)moved); 092 bochs_printf("moved=%x\n", (unsigned)moved); 097 093 098 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 094 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 2*4096, 4096, 099 & moved, 40*4096, MREMAP_MAYMOV 095 & moved, 40*4096, MREMAP_MAYMOVE); 100 _sos_syscall1(4004, (unsigned)"After mremap 096 _sos_syscall1(4004, (unsigned)"After mremap (DO move)"); 101 bochs_printf("moved=%x\n", (unsigned)moved); 097 bochs_printf("moved=%x\n", (unsigned)moved); 102 098 103 _sos_mresize(moved, 4096, 099 _sos_mresize(moved, 4096, 104 & moved, 100*4096, MREMAP_MAYMO 100 & moved, 100*4096, MREMAP_MAYMOVE); 105 _sos_syscall1(4004, (unsigned)"After mremap 101 _sos_syscall1(4004, (unsigned)"After mremap (DO move)"); 106 bochs_printf("moved=%x\n", (unsigned)moved); 102 bochs_printf("moved=%x\n", (unsigned)moved); 107 103 108 return 0; 104 return 0; 109 } 105 }
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