hrev51260 adds 1 changeset to branch 'master'
old head: 021ffa56b94d223787d96a90dab4eb3416cbfa8e
new head: 144e404b2d4053f010397e43fcc99b35042e641a
overview:
http://cgit.haiku-os.org/haiku/log/?qt=range&q=144e404b2d40+%5E021ffa56b94d
----------------------------------------------------------------------------
144e404b2d40: libroot/ppc: Add missing stack_trace
[ Alexander von Gluck IV <kallisti5@xxxxxxxxxxx> ]
----------------------------------------------------------------------------
Revision: hrev51260
Commit: 144e404b2d4053f010397e43fcc99b35042e641a
URL: http://cgit.haiku-os.org/haiku/commit/?id=144e404b2d40
Author: Alexander von Gluck IV <kallisti5@xxxxxxxxxxx>
Date: Wed Jul 5 00:28:13 2017 UTC
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2 files changed, 48 insertions(+)
src/system/libroot/os/arch/ppc/Jamfile | 1 +
src/system/libroot/os/arch/ppc/stack_trace.cpp | 47 ++++++++++++++++++++++
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diff --git a/src/system/libroot/os/arch/ppc/Jamfile
b/src/system/libroot/os/arch/ppc/Jamfile
index 6daef94..cdbf572 100644
--- a/src/system/libroot/os/arch/ppc/Jamfile
+++ b/src/system/libroot/os/arch/ppc/Jamfile
@@ -17,6 +17,7 @@ for architectureObject in [ MultiArchSubDirSetup ppc ] {
byteorder.S
compatibility.c # only here until the places where
those functions
# are used are fixed
+ stack_trace.cpp
stack_frame.c
# systeminfo.c
system_time.c
diff --git a/src/system/libroot/os/arch/ppc/stack_trace.cpp
b/src/system/libroot/os/arch/ppc/stack_trace.cpp
new file mode 100644
index 0000000..48b82ae
--- /dev/null
+++ b/src/system/libroot/os/arch/ppc/stack_trace.cpp
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2015 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ * Michael Lotz, mmlr@xxxxxxxx
+ */
+
+#include <libroot_private.h>
+
+
+/*! Captures a stack trace (the return addresses) of the current thread.
+ \param returnAddresses The array the return address shall be written to.
+ \param maxCount The maximum number of return addresses to be captured.
+ \param skipFrames The number of stack frames that shall be skipped.
+ \param stackBase The base address of the thread stack.
+ \param stackEnd The first address past the thread stack.
+ \return The number of return addresses written to the given array.
+*/
+int32
+__arch_get_stack_trace(addr_t* returnAddresses, int32 maxCount,
+ int32 skipFrames, addr_t stackBase, addr_t stackEnd)
+{
+ int32 count = 0;
+ addr_t basePointer = (addr_t)get_stack_frame();
+
+ while (basePointer != 0 && count < maxCount) {
+ if (basePointer < stackBase || basePointer >= stackEnd)
+ break;
+
+ struct stack_frame {
+ addr_t previous;
+ addr_t return_address;
+ };
+
+ stack_frame* frame = (stack_frame*)basePointer;
+
+ if (skipFrames <= 0)
+ returnAddresses[count++] = frame->return_address;
+ else
+ skipFrames--;
+
+ basePointer = frame->previous;
+ }
+
+ return count;
+}
