- /*
- * Print function call entries within a stack. 'cond' is the
- * "end of stackframe" condition, that the 'stack++'
- * iteration will eventually trigger.
- */
-#define HANDLE_STACK(cond) \
- do while (cond) { \
- unsigned long addr = *stack++; \
- /* Use unlocked access here because except for NMIs \
- we should be already protected against module unloads */ \
- if (__kernel_text_address(addr)) { \
- /* \
- * If the address is either in the text segment of the \
- * kernel, or in the region which contains vmalloc'ed \
- * memory, it *may* be the address of a calling \
- * routine; if so, print it so that someone tracing \
- * down the cause of the crash will be able to figure \
- * out the call path that was taken. \
- */ \
- ops->address(data, addr); \
- } \
- } while (0)
+#ifdef CONFIG_FRAME_POINTER
+ if (!bp) {
+ if (tsk == current) {
+ /* Grab bp right from our regs */
+ asm("movq %%rbp, %0" : "=r" (bp):);
+ } else {
+ /* bp is the last reg pushed by switch_to */
+ bp = *(unsigned long *) tsk->thread.sp;
+ }
+ }
+#endif
+
+