1 files changed, 150 insertions, 0 deletions
diff --git a/src/usr/errl/plugins/errludbacktrace.H b/src/usr/errl/plugins/errludbacktrace.H
new file mode 100644
index 000000000..ad60e9c3e
--- /dev/null
+++ b/src/usr/errl/plugins/errludbacktrace.H
@@ -0,0 +1,150 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/usr/errl/plugins/errludbacktrace.H $                      */
+/*                                                                        */
+/* IBM CONFIDENTIAL                                                       */
+/*                                                                        */
+/* COPYRIGHT International Business Machines Corp. 2012,2013              */
+/*                                                                        */
+/* p1                                                                     */
+/*                                                                        */
+/* Object Code Only (OCO) source materials                                */
+/* Licensed Internal Code Source Materials                                */
+/* IBM HostBoot Licensed Internal Code                                    */
+/*                                                                        */
+/* The source code for this program is not published or otherwise         */
+/* divested of its trade secrets, irrespective of what has been           */
+/* deposited with the U.S. Copyright Office.                              */
+/*                                                                        */
+/* Origin: 30                                                             */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#ifndef ERRL_UDBACKTRACE_H
+#define ERRL_UDBACKTRACE_H
+
+/**
+ *  @file errludbacktrace.H
+ *
+ *  Defines the ErrlUserDetailsParserBackTrace class that parses backtrace FFDC
+ *  user detail in an error log
+ */
+
+#include "errluserdetails.H"
+#include "symbols.H"
+#include <vector>
+
+namespace ERRORLOG
+{
+
+/**
+ * @class ErrlUserDetailsParserBackTrace
+ *
+ * Parses backtrace user detail in an error log
+ */
+class ErrlUserDetailsParserBackTrace : public ErrlUserDetailsParser
+{
+public:
+    /**
+     *  @brief Constructor
+     */
+    ErrlUserDetailsParserBackTrace() {}
+
+    /**
+     *  @brief Destructor
+     */
+    virtual ~ErrlUserDetailsParserBackTrace() {}
+
+    /**
+     *  @brief Parses backtrace user detail data from an error log
+     *
+     *  @param  i_version Version of the data
+     *  @param  i_parse   ErrlUsrParser object for outputting information
+     *  @param  i_pBuffer Pointer to buffer containing detail data
+     *  @param  i_buflen  Length of the buffer
+     */
+    virtual void parse(errlver_t i_version,
+                       ErrlUsrParser & i_parser,
+                       void * i_pBuffer,
+                       const uint32_t i_buflen) const
+    {
+        // This buffer contains a number of 64-bit frame pointers.
+
+        // A character vector for storing a backtrace entry and the space
+        // required for the header (frame number and address (with some padding
+        // for safety)) and the symbol name. This vector is resized if a longer
+        // symbol name is encountered.
+        const uint8_t BACKTRACE_ENTRY_HEADER_SIZE = 32;
+        const uint8_t BACKTRACE_ENTRY_SYMBOL_SIZE = 64;
+        std::vector<char> l_traceEntry(BACKTRACE_ENTRY_HEADER_SIZE +
+                                       BACKTRACE_ENTRY_SYMBOL_SIZE);
+
+        // Initialize l_the symbol table.
+        const char * l_pSymFile = "hbicore.syms";
+        hbSymbolTable symTab;
+        int readRC = symTab.readSymbols( l_pSymFile );
+        if( readRC )
+        {
+            i_parser.PrintString( "Symbols not found", l_pSymFile );
+            // symTab.nearestSymbol() will return NULL because of this.
+            // Carry on.
+        }
+
+        const char * l_pErrlEntry = "ErrlEntry::ErrlEntry";
+        const char * l_pLabel = "Backtrace";
+
+        // loop thru the buffer which is an array of 64-bit addresses
+        uint64_t * p64 = static_cast<uint64_t *>(i_pBuffer);
+        int l_count = i_buflen / sizeof( uint64_t );
+        for( int i = 0; i < l_count; i++ )
+        {
+            // endian convert the stack address
+            uint64_t l_addr  = ntohll(*p64);
+
+            // get nearest symbol
+            const char * l_pSymbol = symTab.nearestSymbol( l_addr );
+
+            if( l_pSymbol )
+            {
+                if( strstr( l_pSymbol, l_pErrlEntry ))
+                {
+                    // hackish, makes for better looking output
+                    // it's in every backtrace (jan2012)
+                    l_pSymbol = l_pErrlEntry;
+                }
+
+                uint16_t l_traceSize =
+                    (BACKTRACE_ENTRY_HEADER_SIZE + strlen(l_pSymbol) + 1);
+
+                if (l_traceEntry.size() < l_traceSize)
+                {
+                    l_traceEntry.resize(l_traceSize);
+                }
+                sprintf(&(l_traceEntry[0]),
+                        "#%2d %016llX %s", i, l_addr, l_pSymbol);
+            }
+            else
+            {
+                sprintf(&(l_traceEntry[0]),"#%2d %016llX", i, l_addr);
+            }
+            i_parser.PrintString( l_pLabel, &(l_traceEntry[0]) );
+
+            // next stack address in the buffer
+            p64++;
+
+            // don't print the label for subsequent backtraces
+            l_pLabel = "";
+        }
+    }
+
+private:
+    // Disabled
+    ErrlUserDetailsParserBackTrace(const ErrlUserDetailsParserBackTrace &);
+    ErrlUserDetailsParserBackTrace & operator=(
+        const ErrlUserDetailsParserBackTrace &);
+};
+
+}
+
+#endif
+