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//============================================================
//
// sdlos_*.c - OS specific low level code
//
// Copyright (c) 1996-2010, Nicola Salmoria and the MAME Team.
// Visit http://mamedev.org for licensing and usage restrictions.
//
// SDLMAME by Olivier Galibert and R. Belmont
//
//============================================================
#include <sys/mman.h>
#include <signal.h>
#ifdef MAME_DEBUG
#include <unistd.h>
#endif
// MAME headers
#include "osdcore.h"
//============================================================
// osd_alloc_executable
//
// allocates "size" bytes of executable memory. this must take
// things like NX support into account.
//============================================================
void *osd_alloc_executable(size_t size)
{
#if defined(SDLMAME_BSD)
return (void *)mmap(0, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0);
#elif defined(SDLMAME_UNIX)
return (void *)mmap(0, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, 0, 0);
#endif
}
//============================================================
// osd_free_executable
//
// frees memory allocated with osd_alloc_executable
//============================================================
void osd_free_executable(void *ptr, size_t size)
{
#ifdef SDLMAME_SOLARIS
munmap((char *)ptr, size);
#else
munmap(ptr, size);
#endif
}
//============================================================
// osd_break_into_debugger
//============================================================
void osd_break_into_debugger(const char *message)
{
#ifdef MAME_DEBUG
printf("MAME exception: %s\n", message);
printf("Attempting to fall into debugger\n");
kill(getpid(), SIGTRAP);
#else
printf("Ignoring MAME exception: %s\n", message);
#endif
}
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