2006-10-12 Martin Hunt <hunt@redhat.com>

	* stack.c: Reorganize and split arch-specific functions to
	separate files.
	(_stp_kta): Better checking.
	(_stp_stack_sprint): Better handling of return probes.

	* stack-i386.c: New file. Uses 2.6.18 DWARF unwinder if available.
	* stack-x86_64.c: New file. Uses 2.6.18 DWARF unwinder if available.
	* stack-ppc64.c: New file.
	* stack-ia64.c: New file.

	* sym.c (_stp_kallsyms_lookup_name): New function. Like
	kallsyms_lookup_name() except use our internal lookup table.

1 files changed, 65 insertions, 0 deletions

diff --git a/runtime/stack-ia64.c b/runtime/stack-ia64.c
new file mode 100644
index 00000000..f941869e
--- /dev/null
+++ b/runtime/stack-ia64.c
@@ -0,0 +1,65 @@
+/* -*- linux-c -*-
+ * ia64 stack tracing functions
+ * Copyright (C) 2005 Intel Corporation.
+ *
+ * This file is part of systemtap, and is free software.  You can
+ * redistribute it and/or modify it under the terms of the GNU General
+ * Public License (GPL); either version 2, or (at your option) any
+ * later version.
+ */
+
+struct dump_para{
+	unsigned long *sp;
+	String str;
+};
+
+static void __stp_show_stack_sym(struct unw_frame_info *info, void *arg)
+{
+	unsigned long ip, skip=1;
+	String str = ((struct dump_para*)arg)->str;
+	struct pt_regs *regs = container_of(((struct dump_para*)arg)->sp, struct pt_regs, r12);
+
+	do {
+		unw_get_ip(info, &ip);
+		if (ip == 0) break;
+                if (skip){
+			if (ip == REG_IP(regs))
+				skip = 0;
+                        else continue;
+                }
+		_stp_string_cat(str, " ");
+		_stp_symbol_sprint(str, ip);
+		_stp_string_cat (str, "\n");
+        } while (unw_unwind(info) >= 0);
+}
+
+static void __stp_show_stack_addr(struct unw_frame_info *info, void *arg)
+{
+	unsigned long ip, skip=1;
+	String str = ((struct dump_para*)arg)->str;
+	struct pt_regs *regs = container_of(((struct dump_para*)arg)->sp, struct pt_regs, r12);	
+
+	do {
+		unw_get_ip(info, &ip);
+		if (ip == 0) break;
+		if (skip){
+			if (ip == REG_IP(regs))
+				skip = 0;
+			continue;
+		}
+		_stp_sprintf (str, "%lx ", ip);
+	} while (unw_unwind(info) >= 0);
+}
+
+static void __stp_stack_sprint (String str, struct pt_regs *regs, int verbose, int levels)
+{
+	unsigned long *stack = (unsigned long *)&REG_SP(regs);
+	struct dump_para para;
+	
+	para.str = str;
+	para.sp  = stack; 
+	if (verbose)
+		unw_init_running(__stp_show_stack_sym, &para);
+        else
+		unw_init_running(__stp_show_stack_addr, &para);
+}