Changeset e515b21a in mainline for uspace/lib/libc/generic/stacktrace.c

Timestamp:

2010-01-26T21:31:56Z (15 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

3698e44

Parents:

80487bc5

Message:

Make stacktrace implementation in C library more generic. Use it in taskdump to print a stack trace of the faulting task.

File:

• uspace/lib/libc/generic/stacktrace.c (modified) (2 diffs)

uspace/lib/libc/generic/stacktrace.c

@@ -1 +1 @@
 /*
  * Copyright (c) 2009 Jakub Jermar
+ * Copyright (c) 2010 Jiri Svoboda
  * All rights reserved.
  *
@@ -36 +37 @@
 #include <stdio.h>
 #include <sys/types.h>
+#include <errno.h>
 
-void stack_trace_fp_pc(uintptr_t fp, uintptr_t pc)
+static int stacktrace_read_uintptr(void *arg, uintptr_t addr, uintptr_t *data);
+
+void stacktrace_print_fp_pc(uintptr_t fp, uintptr_t pc)
 {
-        while (frame_pointer_validate(fp)) {
+        stacktrace_t st;
+        uintptr_t nfp;
+
+        st.op_arg = NULL;
+        st.read_uintptr = stacktrace_read_uintptr;
+
+        while (stacktrace_fp_valid(&st, fp)) {
                 printf("%p: %p()\n", fp, pc);
-                pc = return_address_get(fp);
-                fp = frame_pointer_prev(fp);
+                (void) stacktrace_ra_get(&st, fp, &pc);
+                (void) stacktrace_fp_prev(&st, fp, &nfp);
+                fp = nfp;
         }
 }
 
-void stack_trace(void)
+void stacktrace_print(void)
 {
-        stack_trace_fp_pc(frame_pointer_get(), program_counter_get());
+        stacktrace_prepare();
+        stacktrace_print_fp_pc(stacktrace_fp_get(), stacktrace_pc_get());
         /*
          * Prevent the tail call optimization of the previous call by
          * making it a non-tail call.
          */
-        (void) frame_pointer_get();
+        (void) stacktrace_fp_get();
+}
+
+static int stacktrace_read_uintptr(void *arg, uintptr_t addr, uintptr_t *data)
+{
+        (void) arg;
+        *data = *((uintptr_t *) addr);
+        return EOK;
 }