void
Exception::throw_it (unsigned int line, const char *file, int dbg)
{
// NOTE: This is the only place we can detect a throw of a pointer
// to a stack based object.
Exception *temp;
PRINTF (("Preparing to throw Exception object at %p:\n", this));
// Only make a temporary if the exception object is on the stack.
if (in_stack())
{
PRINTF ((" Exception is on the stack - copying it\n"));
// Use the special new operator which allocates the exception
// in reserved storage if there's no memory available.
temp = new (0) Exception (*this);
// We created it, so we should delete it.
temp->f_temporary = 1;
}
else
{
PRINTF ((" Exception is on the heap\n"));
temp = this;
}
temp->do_throw (line, file, dbg);
}
static bool in_restart_stack(unsigned long sp, struct stack_info *info)
{
unsigned long frame_size, top;
frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
top = S390_lowcore.restart_stack + frame_size;
return in_stack(sp, info, STACK_TYPE_RESTART, top - THREAD_SIZE, top);
}
static bool in_task_stack(unsigned long sp, struct task_struct *task,
struct stack_info *info)
{
unsigned long stack;
stack = (unsigned long) task_stack_page(task);
return in_stack(sp, info, STACK_TYPE_TASK, stack, stack + THREAD_SIZE);
}
void
backtrace_capture(struct backtrace *backtrace)
{
void **frame;
size_t n;
n = 0;
for (frame = __builtin_frame_address(1);
frame != NULL && in_stack(frame) && frame[0] != NULL
&& n < BACKTRACE_MAX_FRAMES;
frame = frame[0])
{
backtrace->frames[n++] = (uintptr_t) frame[1];
}
backtrace->n_frames = n;
}
void get_scc(graph_t * g)
{
if (!g || !g->vex_count()) {
return;
}
int C = g->vex_count();
list_t * L = g->get_structure();
_processed.assign(C, 0);
_visited.assign(C, 0);
std::stack<int> stk;
std::vector<int> in_stack(C, 0), low(C, 0), dfn(C, 0);
for (int i = C - 1; i >= 0; --i) {
if (!_visited[i]) {
_dfs(g, L, i, low, dfn, stk, in_stack);
}
}
}