| <html lang="en"> |
| <head> |
| <title>OpenRISC 1000 - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Embedded-Processors.html#Embedded-Processors" title="Embedded Processors"> |
| <link rel="prev" href="MIPS-Embedded.html#MIPS-Embedded" title="MIPS Embedded"> |
| <link rel="next" href="PA.html#PA" title="PA"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being ``Free Software'' and ``Free Software Needs |
| Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: ``You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom.''--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="OpenRISC-1000"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="PA.html#PA">PA</a>, |
| Previous: <a rel="previous" accesskey="p" href="MIPS-Embedded.html#MIPS-Embedded">MIPS Embedded</a>, |
| Up: <a rel="up" accesskey="u" href="Embedded-Processors.html#Embedded-Processors">Embedded Processors</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">21.3.6 OpenRISC 1000</h4> |
| |
| <p><a name="index-OpenRISC-1000-1349"></a> |
| <a name="index-or1k-boards-1350"></a>See OR1k Architecture document (<a href="www.opencores.org">www.opencores.org</a>) for more information |
| about platform and commands. |
| |
| |
| <a name="index-target-jtag-1351"></a> |
| <dl><dt><code>target jtag jtag://</code><var>host</var><code>:</code><var>port</var><dd> |
| Connects to remote JTAG server. |
| JTAG remote server can be either an or1ksim or JTAG server, |
| connected via parallel port to the board. |
| |
| <p>Example: <code>target jtag jtag://localhost:9999</code> |
| |
| <p><a name="index-or1ksim-1352"></a><br><dt><code>or1ksim </code><var>command</var><dd>If connected to <code>or1ksim</code> OpenRISC 1000 Architectural |
| Simulator, proprietary commands can be executed. |
| |
| <p><a name="index-info-or1k-spr-1353"></a><br><dt><code>info or1k spr</code><dd>Displays spr groups. |
| |
| <br><dt><code>info or1k spr </code><var>group</var><dt><code>info or1k spr </code><var>groupno</var><dd>Displays register names in selected group. |
| |
| <br><dt><code>info or1k spr </code><var>group</var> <var>register</var><dt><code>info or1k spr </code><var>register</var><dt><code>info or1k spr </code><var>groupno</var> <var>registerno</var><dt><code>info or1k spr </code><var>registerno</var><dd>Shows information about specified spr register. |
| |
| <p><a name="index-spr-1354"></a><br><dt><code>spr </code><var>group</var> <var>register</var> <var>value</var><dt><code>spr </code><var>register value</var><dt><code>spr </code><var>groupno</var> <var>registerno value</var><dt><code>spr </code><var>registerno value</var><dd>Writes <var>value</var> to specified spr register. |
| </dl> |
| |
| <p>Some implementations of OpenRISC 1000 Architecture also have hardware trace. |
| It is very similar to <span class="sc">gdb</span> trace, except it does not interfere with normal |
| program execution and is thus much faster. Hardware breakpoints/watchpoint |
| triggers can be set using: |
| <dl> |
| <dt><code>$LEA/$LDATA</code><dd>Load effective address/data |
| <br><dt><code>$SEA/$SDATA</code><dd>Store effective address/data |
| <br><dt><code>$AEA/$ADATA</code><dd>Access effective address ($SEA or $LEA) or data ($SDATA/$LDATA) |
| <br><dt><code>$FETCH</code><dd>Fetch data |
| </dl> |
| |
| <p>When triggered, it can capture low level data, like: <code>PC</code>, <code>LSEA</code>, |
| <code>LDATA</code>, <code>SDATA</code>, <code>READSPR</code>, <code>WRITESPR</code>, <code>INSTR</code>. |
| |
| <p><code>htrace</code> commands: |
| <a name="index-OpenRISC-1000-htrace-1355"></a> |
| |
| <a name="index-hwatch-1356"></a> |
| <dl><dt><code>hwatch </code><var>conditional</var><dd>Set hardware watchpoint on combination of Load/Store Effective Address(es) |
| or Data. For example: |
| |
| <p><code>hwatch ($LEA == my_var) && ($LDATA < 50) || ($SEA == my_var) && ($SDATA >= 50)</code> |
| |
| <p><code>hwatch ($LEA == my_var) && ($LDATA < 50) || ($SEA == my_var) && ($SDATA >= 50)</code> |
| |
| <p><a name="index-htrace-1357"></a><br><dt><code>htrace info</code><dd>Display information about current HW trace configuration. |
| |
| <br><dt><code>htrace trigger </code><var>conditional</var><dd>Set starting criteria for HW trace. |
| |
| <br><dt><code>htrace qualifier </code><var>conditional</var><dd>Set acquisition qualifier for HW trace. |
| |
| <br><dt><code>htrace stop </code><var>conditional</var><dd>Set HW trace stopping criteria. |
| |
| <br><dt><code>htrace record [</code><var>data</var><code>]*</code><dd>Selects the data to be recorded, when qualifier is met and HW trace was |
| triggered. |
| |
| <br><dt><code>htrace enable</code><dt><code>htrace disable</code><dd>Enables/disables the HW trace. |
| |
| <br><dt><code>htrace rewind [</code><var>filename</var><code>]</code><dd>Clears currently recorded trace data. |
| |
| <p>If filename is specified, new trace file is made and any newly collected data |
| will be written there. |
| |
| <br><dt><code>htrace print [</code><var>start</var><code> [</code><var>len</var><code>]]</code><dd>Prints trace buffer, using current record configuration. |
| |
| <br><dt><code>htrace mode continuous</code><dd>Set continuous trace mode. |
| |
| <br><dt><code>htrace mode suspend</code><dd>Set suspend trace mode. |
| |
| </dl> |
| |
| </body></html> |
| |
