--- a/src/3rdparty/webkit/JavaScriptCore/runtime/Collector.cpp 2010-09-10 11:05:22.000000000 +0200 +++ b/src/3rdparty/webkit/JavaScriptCore/runtime/Collector.cpp 2010-11-15 16:39:53.000000000 +0100 @@ -70,6 +70,19 @@ #endif #include +#if defined(__UCLIBC__) +// versions of uClibc 0.9.32 with linuxthreads.old and below do not have +// pthread_getattr_np or pthread_attr_getstack. +#if __UCLIBC_MAJOR__ == 0 && \ + (__UCLIBC_MINOR__ < 9 || \ + (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ <= 32)) && \ + defined(__LINUXTHREADS_OLD__) +#define UCLIBC_USE_PROC_SELF_MAPS 1 +#include +extern int* __libc_stack_end; +#endif +#endif + #if OS(SOLARIS) #include #else @@ -580,6 +592,37 @@ get_thread_info(find_thread(NULL), &threadInfo); return threadInfo.stack_end; #elif OS(UNIX) +#ifdef UCLIBC_USE_PROC_SELF_MAPS + // Read /proc/self/maps and locate the line whose address + // range contains __libc_stack_end. + FILE* file = fopen("/proc/self/maps", "r"); + if (!file) + return 0; + __fsetlocking(file, FSETLOCKING_BYCALLER); + char* line = 0; + size_t lineLen = 0; + while (!feof_unlocked(file)) { + if (getdelim(&line, &lineLen, '\n', file) <= 0) + break; + + long from; + long to; + if (sscanf (line, "%lx-%lx", &from, &to) != 2) + continue; + if (from <= (long)__libc_stack_end && (long)__libc_stack_end < to) { + fclose(file); + free(line); +#ifdef _STACK_GROWS_UP + return (void *)from; +#else + return (void *)to; +#endif + } + } + fclose(file); + free(line); + return 0; +#else AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex); MutexLocker locker(mutex); static void* stackBase = 0; @@ -603,6 +646,7 @@ stackThread = thread; } return static_cast(stackBase) + stackSize; +#endif #elif OS(WINCE) AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex); MutexLocker locker(mutex);