Changeset 985e26d2 in mainline for uspace/lib/libc/generic/stacktrace.c

Timestamp:

2010-01-07T19:06:59Z (15 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8190e63

Parents:

743e17b (diff), eca2435 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge mainline changes.

File:

• uspace/lib/libc/generic/stacktrace.c (moved) (moved from uspace/lib/libc/arch/ia32/include/stackarg.h ) (3 diffs)

uspace/lib/libc/generic/stacktrace.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2005 Jakub Jermar
+ * Copyright (c) 2009 Jakub Jermar
  * All rights reserved.
  *
@@ -27 +27 @@
  */
 
-/** @addtogroup libcia32
+/** @addtogroup libc
  * @{
  */
@@ -33 +33 @@
  */
 
-/*
- * Variable argument list manipulation macros
- * for architectures using stack to pass arguments.
- */
- 
-#ifndef LIBC_ia32_STACKARG_H_
-#define LIBC_ia32_STACKARG_H_
-
+#include <stacktrace.h>
+#include <stdio.h>
 #include <sys/types.h>
 
-/* dont allow to define it second time in stdarg.h */
-#define __VARARGS_DEFINED
+void stack_trace_fp_pc(uintptr_t fp, uintptr_t pc)
+{
+        printf("Printing stack trace:\n");
+        printf("=====================\n");
+        while (frame_pointer_validate(fp)) {
+                printf("%p: %p()\n", fp, pc);
+                pc = return_address_get(fp);
+                fp = frame_pointer_prev(fp);
+        }
+        printf("=====================\n");
+}
 
-typedef struct va_list {
-        int pos;
-        uint8_t *last;
-} va_list;
-
-#define va_start(ap, lst) \
-        (ap).pos = sizeof(lst);                         \
-        (ap).last = (uint8_t *) &(lst)
-
-#define va_arg(ap, type)                \
-        (*((type *)((ap).last + ((ap).pos  += sizeof(type) ) - sizeof(type))))
-
-#define va_end(ap)
-
-
-#endif
+void stack_trace(void)
+{
+        stack_trace_fp_pc(frame_pointer_get(), program_counter_get());
+        /*
+         * Prevent the tail call optimization of the previous call by
+         * making it a non-tail call.
+         */
+        (void) frame_pointer_get();
+}
 
 /** @}