xnu-3789.1.32.tar.gz

[apple/xnu.git] / tools / lldbmacros / pgtrace.py

diff --git a/tools/lldbmacros/pgtrace.py b/tools/lldbmacros/pgtrace.py
new file mode 100644 (file)
index 0000000..0b55e87
--- /dev/null
+++ b/tools/lldbmacros/pgtrace.py
@@ -0,0 +1,38 @@
+#! /usr/bin/env python                                                                                                                                                                                        
+# -*- coding: utf-8 -*-                                                                                                                                                                                        
+
+from xnu import *
+
+# Macro: pgtrace
+@lldb_command('showpgtrace')
+def ShowPgtrace(cmd_args=None, cmd_options={}):
+    """ Display pgtrace buffer contents
+        Usage: showpgtrace
+    """
+
+    max_entry = kern.globals.pgtrace.size
+    rd_idx = kern.globals.pgtrace.rdidx
+    wr_idx = kern.globals.pgtrace.wridx
+    
+    print "-"*80
+    print "rd_idx=%d wr_idx=%d num_entries=%d max_entry=%d" % (rd_idx, wr_idx, wr_idx-rd_idx, max_entry)
+    print "-"*80
+
+    rw_str = { GetEnumValue('pgtrace_rw_t::PGTRACE_RW_LOAD'): "R",
+                GetEnumValue('pgtrace_rw_t::PGTRACE_RW_STORE'): "W",
+                GetEnumValue('pgtrace_rw_t::PGTRACE_RW_PREFETCH'): "P" }
+
+    while rd_idx != wr_idx:
+        clipped_idx = rd_idx % max_entry
+        entry = kern.globals.pgtrace.logs + sizeof('log_t') * clipped_idx
+        entry = kern.GetValueFromAddress(entry, 'log_t *')
+
+        entry_str = "[%d] id=%lu time=%lu %s " % (clipped_idx, entry.id, entry.res.rr_time, rw_str[int(entry.res.rr_rw)])
+
+        for i in range(entry.res.rr_num):
+            entry_str += "%x=%x " % (entry.res.rr_addrdata[i].ad_addr, entry.res.rr_addrdata[i].ad_data)
+
+        print entry_str
+        
+        rd_idx += 1
+# EndMacro