search for: virtualprotect

...5D704 00760D83 imul eax, 28h 00760D86 mov eax, [eax+ecx+34h] 00760D8A sub eax, [ebp-4] 00760D8D cmp ds:dword_75D734, 2 00760D94 mov [ebp-14h], eax ; ; If (*(long *)75D734) != 2 then skip the call to ; VirtualProtect ; 00760D97 jnz short loc_760DC4 ; ; Push arguments to VirtualProtect( ; LPVOID lpAddress, ; SIZE_T dwSize, ; DWORD flNewProtect, ; PDWORD lpflOldProtect) ; 00760D99 lea eax, [ebp-8] ; ; lpflOldProtect is a local variable ; 00760D9C...

On Wed, Jul 30, 2008 at 11:32:18AM -0700, Bill Wendling wrote: > On Jul 30, 2008, at 11:17 AM, Julien Lerouge wrote: >> ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2095: error: conflicting types >> for 'VirtualProtect' >> >> c:/cygwin/home/jlerouge/buildbot/llvm/lib/../include/winbase.h:1998: >> error: previous declaration of 'VirtualProtect' was here >> > This is weird. Why is it #including this header during the bootstrap? Not sure, I'll take a look. This is not a re...

...les of 0x1000, each access throwing an exception, until it hit the last exception at 0x757000, and then then program ran normally. Probably no coincidence, since the next writable segment starts at 0x759000. So apparently the program is designed to throw the exceptions. Just before the call to VirtualProtect: 0806d398:Call kernel32.SetUnhandledExceptionFilter(0075f447) ret=0075f0cb 0806d398:Ret kernel32.SetUnhandledExceptionFilter() retval=00000000 ret=0075f0cb This function is this: 0075F447 sub_75F447 proc near 0075F447 call sub_75F047 0075F44C xor eax...

...n Wed, Jul 30, 2008 at 03:06:54PM -0700, Julien Lerouge wrote: > On Wed, Jul 30, 2008 at 11:32:18AM -0700, Bill Wendling wrote: > > On Jul 30, 2008, at 11:17 AM, Julien Lerouge wrote: > >> ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2095: error: conflicting types > >> for 'VirtualProtect' > >> > >> c:/cygwin/home/jlerouge/buildbot/llvm/lib/../include/winbase.h:1998: > >> error: previous declaration of 'VirtualProtect' was here > >> > > This is weird. Why is it #including this header during the bootstrap? > > Not sure, I...

This is where that 0x761B10 address must have been coming from: 007605E2 sub_7605E2 proc near ; CODE XREF: start+88^Xp 007605E2 mov eax, large fs:0 007605E8 push ebp 007605E9 mov ebp, esp 007605EB push 0FFFFFFFFh 007605ED push 75A010h 007605F2 push 761B10h

I used WinDbg to show the memory protections that were placed on the executable image just after it was loaded, and just before the app starts. Here is what wine shows: View: 0x400000 - 0x765fff 28 0x400000 - 0x765fff c-rw- Here is what WinDbg shows (manually edited to look like the wine view): 0x400000 - 0x400fff c-r-- (PAGE_READONLY) 0x401000 - 0x454fff c--W- (PAGE_WRITECOPY)

Hi Ruben, > I see I missed some curly braces. I also modified spacing a tiny bit. Doesn't seem so. E.g. you have: + if ( !VirtualQuery(addr, &b, sizeof(b)) ) + exit(1); + if( !VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect) ) Add space after "if". Do not put spaces after "(" and before ")". Same for other places in the file. -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg...

...(char*)((uintptr_t)execution_buffer & (-4095)); char* end = (char*)((uintptr_t)(&execution_buffer[128+4096]) & (-4095)); +#if defined(_WIN32) + DWORD dummy_oldProt; + MEMORY_BASIC_INFORMATION b; + if ( !VirtualQuery(start, &b, sizeof(b)) ) + return 1; + if ( !VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect) ) +#else if ( mprotect(start, end-start, PROT_READ|PROT_WRITE|PROT_EXEC) != 0 ) +#endif return 1; // verify you can copy and execute a function @@ -53,7 +70,8 @@ __clear_cache(execution_buffer, &execu...

...jlerouge/buildbot/llvm-src/include -DL_trampoline -c ../../../llvm-gcc4.2-src/gcc/libgcc2.c -o libgcc/./_trampoline.o ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2086: warning: no previous prototype for 'getpagesize' ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2095: error: conflicting types for 'VirtualProtect' c:/cygwin/home/jlerouge/buildbot/llvm/lib/../include/winbase.h:1998: error: previous declaration of 'VirtualProtect' was here ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2100: warning: no previous prototype for 'mprotect' make[3]: *** [libgcc/./_trampoline.o] Error 1 make[3]: Lea...

...rc/gcc/libgcc2.c -o libgcc/./_trampoline.o > ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2086: warning: no previous > prototype for 'getpagesize' > I think that this was also a temporary situation. > ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2095: error: conflicting types > for 'VirtualProtect' > > c:/cygwin/home/jlerouge/buildbot/llvm/lib/../include/winbase.h:1998: > error: previous declaration of 'VirtualProtect' was here > This is weird. Why is it #including this header during the bootstrap? > ../../../llvm-gcc4.2-src/gcc/libgcc2.c:2100: warning: no previou...

...(char*)((uintptr_t)execution_buffer & (-4095)); char* end = (char*)((uintptr_t)(&execution_buffer[128+4096]) & (-4095)); +#if defined(_WIN32) + DWORD dummy_oldProt; + MEMORY_BASIC_INFORMATION b; + if ( !VirtualQuery(start, &b, sizeof(b)) ) + return 1; + if ( !VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect) ) +#else if ( mprotect(start, end-start, PROT_READ|PROT_WRITE|PROT_EXEC) != 0 ) +#endif return 1; // verify you can copy and execute a function Index: test/Unit/enable_execute_stack_test.c ====================...

.../1/7 Anton Korobeynikov <anton at korobeynikov.info> > Hi Ruben, > > > I see I missed some curly braces. I also modified spacing a tiny bit. > Doesn't seem so. E.g. you have: > > + if ( !VirtualQuery(addr, &b, sizeof(b)) ) > + exit(1); > + if( !VirtualProtect(b.BaseAddress, b.RegionSize, > PAGE_EXECUTE_READWRITE, &b.Protect) ) > Add space after "if". Do not put spaces after "(" and before ")". Same > for other places in the file. > OK, I followed the rules you set forth here. But the files followed differen...

...): ws2_32: Fix ai_canonname buffer allocation in addrinfo_AtoW. Qian Hong (2): server: Remove useless trailing comma in array. ntdll/tests: Fixed typo. Sebastian Lackner (13): ntdll: Use lockfree implementation for get_cached_fd. kernel32/tests: Add tests for calling VirtualProtect with NULL as last argument. kernel32: Do not omit mandatory argument for VirtualProtect. krnl386.exe16: Do not omit mandatory argument for VirtualProtect. ntdll: Do not omit mandatory argument for VirtualProtect. winedevice: Do not omit mandatory argument for VirtualProtect....

...bg, although it crashes in the same winedbg place under gdb. I took a closer look at wine --winver nt40 --debugmsg +all. I found something interesting. If I search for queue_exception, I find that there is an exception raised before the LoadOEMCall, about 328klines in: 0806d398:Call kernel32.VirtualProtect(00459000,00000018,00000002,40616e74) ret=0075fd82 0806d398:trace:virtual:VirtualProtect 0x459000 00000018 00000002 0806d398:trace:virtual:VIRTUAL_SetProt 0x459000-0x459fff c-r-- View: 0x400000 - 0x765fff 28 0x400000 - 0x400fff c-r-- 0x401000 - 0x458fff c---- 0x459000 - 0x459fff...

Hi Bill, This is probably due to the llvm-gcc merge. Please take a look. Thanks, Evan On Jul 30, 2008, at 10:04 AM, Duncan Sands wrote: > x86-64 linux, during stage3: > > xgcc -B/home/duncan/LLVM/gcc-4.2.llvm-objects/./gcc/ -B/usr/local/ > gnat-llvm/x86_64-unknown-linux-gnu/bin/ -B/usr/local/gnat-llvm/ > x86_64-unknown-linux-gnu/lib/ -isystem /usr/local/gnat-llvm/x86_64-

x86-64 linux, during stage3: xgcc -B/home/duncan/LLVM/gcc-4.2.llvm-objects/./gcc/ -B/usr/local/gnat-llvm/x86_64-unknown-linux-gnu/bin/ -B/usr/local/gnat-llvm/x86_64-unknown-linux-gnu/lib/ -isystem /usr/local/gnat-llvm/x86_64-unknown-linux-gnu/include -isystem /usr/local/gnat-llvm/x86_64-unknown-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I../../../gcc-4.2.llvm/libgomp -I.

> Rev 54193 seems to cause that failure doing a non bootstrap build on > MingW. > +#ifdef __i386__ > +extern int VirtualProtect (char *, int, int, int *) __attribute__((stdcall)); > +#endif Do we need this stuff at all? afair, I deleted the whole lines in r47684 to sync libgcc2.c with mainline gcc. -- WBR, Anton Korobeynikov

...followed by the generic Unix implementation. Neither applies to Win32, so > I ifdef'ed the whole thing. > > >> > + MEMORY_BASIC_INFORMATION b; >> > + >> > + if (!VirtualQuery(addr, &b, sizeof(b))) >> > + exit(1); >> > + if (!VirtualProtect(b.BaseAddress, b.RegionSize, >> PAGE_EXECUTE_READWRITE, &b.Protect)) >> > + exit(1); >> > +#endif /* _WIN32 */ >> > } >> >> Aside from that, patch LGTM. >> > > Great! > > Ruben > > >> >> ~Aaron >> > &...

...M_MapDosLayout(void) > 500 { > 501 static int already_mapped; > 502 > 503 if (!already_mapped) > 504 { > 505 HMODULE16 hModule; > 506 unsigned short sel; > 507 LDT_ENTRY entry; > 508 > 509 if (DOSMEM_dosmem || !VirtualProtect( NULL, DOSMEM_SIZE, PAGE_EXECUTE_READWRITE, NULL )) > 510 { > 511 ERR( "Need full access to the first megabyte for DOS mode\n" ); > 512 ExitProcess(1); > 513 } > The variable DOSMEM_MapDosLayout at line 499 of the same module and...

...uf.Data FunctionRecord pack , __attribute__((packed)) => #pragma pack(push,1), msvc also requires bitfields to be same type to pack them together( all types => uint32_t) FD int => HANDLE, most code logic still valid (-1 as invalid value), r/w API replaced with windows mprotect => VirtualProtect readTSC in xray_x86_64.inc also works for windows replace read tsc from proc with QueryPerformanceFrequency msvc can not compile such code void setupNewBuffer(int (*wall_clock_reader)(clockid_t, struct timespec *)); must use typedef first . xr...