Ejemplos de u_execmem_alloc en C++ (Cpp)

Ejemplo n.º 1

Archivo: entry_armv7_tsd.c Proyecto: phomes/libglvnd

mapi_func entry_generate(int slot)
{
    void *code = u_execmem_alloc(entry_stub_size);
    if (!code) {
        return NULL;
    }

    // Add 1 to the base address to force Thumb mode when jumping to the stub
    code = (void *)((char *)code + 1);

    entry_generate_default_code(code, slot);

    return (mapi_func) code;
}

Ejemplo n.º 2

Archivo: glapi_entrypoint.c Proyecto: freedesktop-unofficial-mirror/mesa__mesa

/**
 * Generate a dispatch function (entrypoint) which jumps through
 * the given slot number (offset) in the current dispatch table.
 * We need assembly language in order to accomplish this.
 */
_glapi_proc
generate_entrypoint(unsigned int functionOffset)
{
   /* 32 is chosen as something of a magic offset.  For x86, the dispatch
    * at offset 32 is the first one where the offset in the
    * "jmp OFFSET*4(%eax)" can't be encoded in a single byte.
    */
   const GLubyte * const template_func = gl_dispatch_functions_start 
     + (DISPATCH_FUNCTION_SIZE * 32);
   GLubyte * const code = (GLubyte *) u_execmem_alloc(DISPATCH_FUNCTION_SIZE);


   if ( code != NULL ) {
      (void) memcpy(code, template_func, DISPATCH_FUNCTION_SIZE);
      fill_in_entrypoint_offset( (_glapi_proc) code, functionOffset );
   }

   return (_glapi_proc) code;
}