Hi, all Is it possible to force gcc use int instruction for all the system calls, but not sysenter? This question may sound strange but I have to compile some projects like Python and Firefox this way. Summary Thanks to jbcreix, I've downloaded glibc 2.9 source code, and modified the lines in sysdeps/unix/sysv/linux/i386/sysdep.h, to ...
Example: if (almost_always_false_condition) { // do something } Is there a way to suggest compiler that in 99% condition will be false. The condition calculation takes ~60 cycles to be checked, and it cannot be calculated at compile time by compiler itself. (gcc 4.3) ...
I am having a problem using const reverse iterators on non-const containers with gcc. Well, only certain versions of gcc. #include <vector> #include <iostream> using namespace std; int main() { const char v0[4] = "abc"; vector<char> v(v0, v0 + 3); // This block works fine vector<char>::const_iterator i; for (i = ...
Ok. I am trying to compile the following application on Windows (Segmenter, see step 3). I checked out the source and changed the references so that'd all be good. It's basically a one file app, with a reference to ffmpeg. The makefile reads: gcc -Wall -g segmenter.c -o segmenter -lavformat -lavcodec -lavutil -lbz2 -lm -lz -lfaac...
I have the following code: #include <stdio.h> int main(void) { int x __attribute__ ((aligned (16))) = 0; printf("%lX\n", &x); return 0; } Compiling and running this code using mingw32-c++.exe (GCC) 3.4.5 (mingw-vista special r3) prints 0x22FF24 which is 0b1000101111111100100100. Compiling and running this code using g++ ...
I was trying to make a Intel 8080 CPU emulator (then I'd like to emulate Space Invaders, which use it). I coded nearly complete implementation of this CPU (thanks to MAME and Tickle project (mostly) ;) ) except undocument instructions (0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38, 0x0CB, 0x0D9, 0x0DD, 0x0ED, 0x0FD). I've have only problems...
Is there a waymuch like viewing the result of preprocessing with gcc -Eto see what my objects look like once compiled into object files? I am talking about GCC, but a solution including MSVC would be fine. ...
I'm using a header called colors.h to organize my source code. The header is like this: #define DEFAULT 0x07 #define BLACK 0 #define GRAY 7 #define BLUE 9 #define GREEN 10 #define CYAN 11 #define RED 12 #define MAGENTA 13 #define YELLOW 14 I'm putting the header at the same directory of the main source code, called kernel.c, and inclu...
If I have a multi-processor board that has cache-coherent non-uniform memory access ( NUMA ), i.e. separate "northbridges" with separate RAM for each processor, does any compiler know how to automatically spread the data across the different memory systems such that processes working on local threads are mostly retrieving their data from...
I used gcc to compile a few fortran source files into *.lib and *.dll on Windows platform, using the latest version of mingw . The gcc used is version 3. The result of the output is arpack_win32.dll, blas_win32.dll and lapack_win32.dll. I then want to compile sssimp.f against the arpack_win32.dll, blas_win32.dll and lapack_win32.dll usi...
When I try to build my app for 10.4, ppc, I get the following error: GCC 4.2 is not compatible with the Mac OS X 10.4 SDK (file MBM.m) What does this mean, and how can I stop it and build for 10.4? MBM.m: http://localhostr.com/files/bb385f/MBM.m Sorry for the brief explanation, but I have to go. Please help, HiGuy S ...
All, In a webserver if gcc and g++ are not provided by the hosting service to the user.Can we download it and compile through it in RHEL5 OS. If so please provide the suitable link to download it. Thanks...... ...
Program calculates sum of numbers from 1 to N.. Child process calculates sum of EVEN numbers. Parent process calculates sum of odd numbers. I want to get the return value of child process in parent process. How do i do that #include<stdio.h> #include<errno.h> #include<unistd.h> #include<stdlib.h> #include<fcntl.h> int main() { int ...
The simplest way to manipulate the GIL in Python C extensions is to use the macros provided: my_awesome_C_function() { blah; Py_BEGIN_ALLOW_THREADS // do stuff that doesn't need the GIL if (should_i_call_back) { Py_BLOCK_THREADS // do stuff that needs the GIL Py_UNBLOCK_THREADS } Py_E...
How can I prevent the debug popup window from appearing when an assertion fails on a Windows machine? The app I'm writing is console based and I'm using assert() to test certain things when it's executed in test mode. I'm using MinGW + GCC 4. Edit: This is the test program. #include <stdlib.h> #include <assert.h> int main(void) { ...
Hi, i would like to play with the constructing calls feature of gcc... From the doc : — Built-in Function: void * __builtin_apply (void (*function)(), void *arguments, size_t size) This built-in function invokes function with a copy of the parameters described by arguments and size. The value of arguments should be...
I am trying to run Cygwin, and I am running into some problems. I tried to compile a program that works both on Windows with mingw and on a Unix system, but when I go to compile it through Cygwin: gcc threads.c -o threads I get the error: this application has requested the runtime to terminate it in an unusual way And that's it... a...
#include<stdio.h> int main() { unsigned char c; c = 300; printf("%d",c); return 0; } Is the output in any way predictable or its undefined?? ...
Xcode complaints about "multi-character character contant"'s when I try to do the following: static unichar accent characters[] = { 'ā', 'á', 'ă', 'à' }; How do you make an array of characters, when not all of them are ascii? The following works just fine static unichar accent[] = { 'a', 'b', 'c' }; Workaround The closest work ar...
Hi, is there a magic variable in gcc holding a pointer to the current function ? I would like to have a kind of table containing for each function pointer a set of information. I know there's a _func_ variable containing the name of the current function as a string but not as a function pointer. This is not to call the function th...