From ab0ad5e92b8ef2853f19ef8fa9bac888295f645f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Thu, 1 Mar 2007 14:39:09 +0000
Subject: [PATCH] Implemented printing the stack trace in vm_page_fault() for
 PPC as well. Not tested, though.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20284 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/system/kernel/vm/vm.cpp | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/system/kernel/vm/vm.cpp b/src/system/kernel/vm/vm.cpp
index fe9f2fce4f..26e1402b99 100644
--- a/src/system/kernel/vm/vm.cpp
+++ b/src/system/kernel/vm/vm.cpp
@@ -2888,20 +2888,31 @@ vm_page_fault(addr_t address, addr_t faultAddress, bool isWrite, bool isUser,
 #if 1
 			if (area) {
 				struct stack_frame {
-					#ifdef __INTEL__
+					#if defined(__INTEL__) || defined(__POWERPC__)
 						struct stack_frame*	previous;
 						void*				return_address;
 					#else
 						// ...
 					#endif
-				};
+				} frame;
+#ifdef __INTEL__
 				struct iframe *iframe = i386_get_user_iframe();
 				if (iframe == NULL)
 					panic("iframe is NULL!");
 
-				struct stack_frame frame;
 				status_t status = user_memcpy(&frame, (void *)iframe->ebp,
 					sizeof(struct stack_frame));
+#elif defined(__POWERPC__)
+				struct iframe *iframe = ppc_get_user_iframe();
+				if (iframe == NULL)
+					panic("iframe is NULL!");
+
+				status_t status = user_memcpy(&frame, (void *)iframe->r1,
+					sizeof(struct stack_frame));
+#else
+#	warn "vm_page_fault() stack trace won't work"
+				status = B_ERROR;
+#endif
 
 				dprintf("stack trace:\n");
 				while (status == B_OK) {