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