From b2a7fcb4045ff77189f7431fde83e16e21258736 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Sun, 18 Oct 2009 19:50:13 +0000
Subject: [PATCH] * Added an arch_debug_stack_trace() function that is called
 from the KDL loop   in case there aren't any KDL commands available yet.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33642 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 headers/private/kernel/arch/debug.h        |  3 ++-
 src/system/kernel/arch/arm/arch_debug.cpp  | 17 ++++++++++++-----
 src/system/kernel/arch/m68k/arch_debug.cpp |  6 ++++++
 src/system/kernel/arch/ppc/arch_debug.cpp  |  7 +++++++
 src/system/kernel/arch/x86/arch_debug.cpp  |  7 +++++++
 src/system/kernel/debug/debug.cpp          |  3 +++
 6 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/headers/private/kernel/arch/debug.h b/headers/private/kernel/arch/debug.h
index a910fa9626..1f51e9559e 100644
--- a/headers/private/kernel/arch/debug.h
+++ b/headers/private/kernel/arch/debug.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2008, Axel Dörfler, axeld@pinc-software.de.
+ * Copyright 2005-2009, Axel Dörfler, axeld@pinc-software.de.
  * Distributed under the terms of the MIT License.
  *
  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
@@ -23,6 +23,7 @@ extern "C" {
 #endif
 
 status_t arch_debug_init(kernel_args *args);
+void arch_debug_stack_trace(void);
 void *arch_debug_get_caller(void);
 int32 arch_debug_get_stack_trace(addr_t* returnAddresses, int32 maxCount,
 		int32 skipIframes, int32 skipFrames, bool userOnly);
diff --git a/src/system/kernel/arch/arm/arch_debug.cpp b/src/system/kernel/arch/arm/arch_debug.cpp
index 81f494ee12..bdc73b7ff3 100644
--- a/src/system/kernel/arch/arm/arch_debug.cpp
+++ b/src/system/kernel/arch/arm/arch_debug.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2008, Haiku Inc. All rights reserved.
+ * Copyright 2003-2009, Haiku Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -241,6 +241,12 @@ arch_debug_contains_call(struct thread *thread, const char *symbol,
 }
 
 
+void
+arch_debug_stack_trace(void)
+{
+}
+
+
 void *
 arch_debug_get_caller(void)
 {
@@ -376,19 +382,20 @@ arch_debug_init(kernel_args *args)
 	return B_NO_ERROR;
 }
 
+
 void
 arch_debug_call_with_fault_handler(cpu_ent* cpu, jmp_buf jumpBuffer,
-        void (*function)(void*), void* parameter)
+	void (*function)(void*), void* parameter)
 {
-        // TODO: Implement! Most likely in assembly.
-        longjmp(jumpBuffer, 1);
+	// TODO: Implement! Most likely in assembly.
+	longjmp(jumpBuffer, 1);
 }
 
 
 void
 arch_debug_unset_current_thread(void)
 {
-        // TODO: Implement!
+	// TODO: Implement!
 }
 
 
diff --git a/src/system/kernel/arch/m68k/arch_debug.cpp b/src/system/kernel/arch/m68k/arch_debug.cpp
index 7b50744226..816ddf4b60 100644
--- a/src/system/kernel/arch/m68k/arch_debug.cpp
+++ b/src/system/kernel/arch/m68k/arch_debug.cpp
@@ -253,6 +253,12 @@ arch_debug_save_registers(int *regs)
 }
 
 
+void
+arch_debug_stack_trace(void)
+{
+}
+
+
 bool
 arch_debug_contains_call(struct thread *thread, const char *symbol,
 	addr_t start, addr_t end)
diff --git a/src/system/kernel/arch/ppc/arch_debug.cpp b/src/system/kernel/arch/ppc/arch_debug.cpp
index 94a2f21b1e..841d787ef2 100644
--- a/src/system/kernel/arch/ppc/arch_debug.cpp
+++ b/src/system/kernel/arch/ppc/arch_debug.cpp
@@ -259,6 +259,13 @@ arch_debug_save_registers(int *regs)
 }
 
 
+void
+arch_debug_stack_trace(void)
+{
+	stack_trace(0, NULL);
+}
+
+
 bool
 arch_debug_contains_call(struct thread *thread, const char *symbol,
 	addr_t start, addr_t end)
diff --git a/src/system/kernel/arch/x86/arch_debug.cpp b/src/system/kernel/arch/x86/arch_debug.cpp
index b7bb283f28..b26373d047 100644
--- a/src/system/kernel/arch/x86/arch_debug.cpp
+++ b/src/system/kernel/arch/x86/arch_debug.cpp
@@ -883,6 +883,13 @@ cmd_in_context(int argc, char** argv)
 //	#pragma mark -
 
 
+void
+arch_debug_stack_trace(void)
+{
+	stack_trace(0, NULL);
+}
+
+
 bool
 arch_debug_contains_call(struct thread *thread, const char *symbol,
 	addr_t start, addr_t end)
diff --git a/src/system/kernel/debug/debug.cpp b/src/system/kernel/debug/debug.cpp
index d1f98fd5f8..ded2e1960f 100644
--- a/src/system/kernel/debug/debug.cpp
+++ b/src/system/kernel/debug/debug.cpp
@@ -733,6 +733,9 @@ kernel_debugger_loop(const char* message, int32 cpu)
 		}
 	}
 
+	if (!has_debugger_command("help"))
+		arch_debug_stack_trace();
+
 	int32 continuableLine = -1;
 		// Index of the previous command line, if the command returned
 		// B_KDEBUG_CONT, i.e. asked to be repeatable, -1 otherwise.