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authorThomas Schwinge <thomas@codesourcery.com>2014-02-26 12:32:06 +0100
committerThomas Schwinge <thomas@codesourcery.com>2014-02-26 12:32:06 +0100
commitc4ad3f73033c7e0511c3e7df961e1232cc503478 (patch)
tree16ddfd3348bfeec014a4d8bb8c1701023c63678f /microkernel/mach/gnumach/debugging.mdwn
parentd9079faac8940c4654912b0e085e1583358631fe (diff)
IRC.
Diffstat (limited to 'microkernel/mach/gnumach/debugging.mdwn')
-rw-r--r--microkernel/mach/gnumach/debugging.mdwn23
1 files changed, 19 insertions, 4 deletions
diff --git a/microkernel/mach/gnumach/debugging.mdwn b/microkernel/mach/gnumach/debugging.mdwn
index 7e7cfb4..cf02471 100644
--- a/microkernel/mach/gnumach/debugging.mdwn
+++ b/microkernel/mach/gnumach/debugging.mdwn
@@ -1,5 +1,5 @@
-[[!meta copyright="Copyright © 2007, 2008, 2009, 2011, 2012, 2013 Free Software
-Foundation, Inc."]]
+[[!meta copyright="Copyright © 2007, 2008, 2009, 2011, 2012, 2013, 2014 Free
+Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
@@ -135,7 +135,7 @@ update its display buffer anymore under certain conditions.
# Halting the CPU and Examining Registers
-IRC, freenode, #hurd, 2011-07-14:
+## IRC, freenode, #hurd, 2011-07-14
<braunr> one ugly trick i use when printf isn't available is to halt the
cpu
@@ -146,7 +146,22 @@ IRC, freenode, #hurd, 2011-07-14:
# Serial Console
-IRC, freenode, #hurd, 2011-11-13:
+## IRC, freenode, #hurd, 2011-11-13
<youpi> use console=com0
<youpi> to activate the console on the first serial port
+
+
+# `ud2` instruction
+
+## IRC, freenode, #hurd, 2013-10-31
+
+ [master-x86_64]
+ <phcoder> GNU Mach 1.3.99
+ <phcoder> Running on xen-3.0-x86_64.
+ <phcoder> AT386 boot: physical memory from 0x0 to 0x40000000
+ <youpi> \o/
+ <phcoder> well when loaded through pvgrub2 i hangs without any message
+ <phcoder> any pointers on debugging?
+ <youpi> I usually put the ud2 instruction along the path to see where it
+ crashes