Diff markup
001 001
002 002
003 003
004 004
005 005
006 006
007 007
008 008
009 009
010 010
011 011
012 012
013 013
014 014
015 015
016 016
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
026 026
027 027
028 028
029 029
030 030
031 031
032 032
033 int main() 033 int main()
034 { 034 {
035 char * zoup; 035 char * zoup;
036 int fd; <<
037 <<
038 fd = open("/dev/zero", O_RDWR); <<
039 zoup = mmap((void*)4096, 8*1024*1024, <<
040 PROT_READ | PROT_WRITE, <<
041 MAP_SHARED, <<
042 fd, 34); <<
043 close(fd); <<
044 036
>> 037 zoup = fakemmap((void*)4096, 8*1024*1024,
>> 038 PROT_READ | PROT_WRITE,
>> 039 MAP_SHARED,
>> 040 "/dev/zero", 34);
045 bochs_printf("mapped @%x\n", (unsigned)zoup) 041 bochs_printf("mapped @%x\n", (unsigned)zoup);
046 042
047 043
048 fork(); 044 fork();
049 fork(); 045 fork();
050 046
051 _sos_syscall1(4004, (unsigned)"Initial"); 047 _sos_syscall1(4004, (unsigned)"Initial");
052 mprotect(zoup, 10*4096, PROT_READ); 048 mprotect(zoup, 10*4096, PROT_READ);
053 zoup += 10*4096; 049 zoup += 10*4096;
054 _sos_syscall1(4004, (unsigned)"After mprotec 050 _sos_syscall1(4004, (unsigned)"After mprotect Low");
055 051
056 mprotect(zoup-4096, 2*4096, PROT_READ); 052 mprotect(zoup-4096, 2*4096, PROT_READ);
057 zoup += 4096; 053 zoup += 4096;
058 _sos_syscall1(4004, (unsigned)"After mprotec 054 _sos_syscall1(4004, (unsigned)"After mprotect Before Low");
059 055
060 mprotect(zoup-4096, 4096, PROT_READ); 056 mprotect(zoup-4096, 4096, PROT_READ);
061 _sos_syscall1(4004, (unsigned)"After mprotec 057 _sos_syscall1(4004, (unsigned)"After mprotect Before low (bis)");
062 058
063 mprotect(zoup + 1024*1024, 4096, PROT_READ); 059 mprotect(zoup + 1024*1024, 4096, PROT_READ);
064 _sos_syscall1(4004, (unsigned)"After mprotec 060 _sos_syscall1(4004, (unsigned)"After mprotect Middle");
065 061
066 mprotect(zoup + 1024*1024, 4096, PROT_READ); 062 mprotect(zoup + 1024*1024, 4096, PROT_READ);
067 _sos_syscall1(4004, (unsigned)"After mprotec 063 _sos_syscall1(4004, (unsigned)"After mprotect Middle (bis)");
068 064
069 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096 065 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096, 4096, PROT_READ);
070 _sos_syscall1(4004, (unsigned)"After mprotec 066 _sos_syscall1(4004, (unsigned)"After mprotect High");
071 067
072 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*40 068 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, PROT_READ);
073 _sos_syscall1(4004, (unsigned)"After mprotec 069 _sos_syscall1(4004, (unsigned)"After mprotect Past High");
074 070
075 mprotect((void*)0x40000000, 0x10000000, PROT 071 mprotect((void*)0x40000000, 0x10000000, PROT_READ);
076 _sos_syscall1(4004, (unsigned)"After mprotec 072 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR");
077 073
078 mprotect((void*)0x40000000, 0x10000000, PROT 074 mprotect((void*)0x40000000, 0x10000000, PROT_READ);
079 _sos_syscall1(4004, (unsigned)"After mprotec 075 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR (bis)");
080 076
081 return 0; 077 return 0;
082 } 078 }