Support loading in a symbol file.

arch/alpha/freebsd/system.cc:
arch/alpha/isa/decoder.isa:
arch/alpha/linux/system.cc:
arch/alpha/system.cc:
arch/alpha/tru64/system.cc:
    Let symbol files be read in so that profiling can happen on the binaries as well.
python/m5/objects/System.py:
    Add in symbol files.
sim/pseudo_inst.cc:
    Load in a specified symbol file.
sim/pseudo_inst.hh:
    Allow for symbols to be loaded.
sim/system.hh:
    Support symbol file.
util/m5/m5.c:
util/m5/m5op.S:
    Add support to m5 util for loading symbols (and readfile).

--HG--
extra : convert_revision : f10c1049bcd7b22b98c73052c0666b964aff222b

util/m5/m5.c

@@ -30,6 +30,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "m5op.h"
 
@@ -165,6 +166,22 @@ main(int argc, char *argv[])
         }
     }
 
+    if (COMPARE("readfile")) {
+            char buf[256*1024];
+            int offset = 0;
+            int len;
+
+            if (argc != 2)
+                    usage();
+
+            while ((len = m5_readfile(buf, sizeof(buf), offset)) > 0) {
+                    write(STDOUT_FILENO, buf, len);
+                    offset += len;
+            }
+
+            return 0;
+    }
+
     if (COMPARE("checkpoint")) {
         switch (argc) {
           case 4:
@@ -182,5 +199,10 @@ main(int argc, char *argv[])
         return 0;
     }
 
+    if (COMPARE("loadsymbol")) {
+        m5_loadsymbol(arg1);
+        return 0;
+    }
+
     usage();
 }

util/m5/m5op.S

@@ -38,6 +38,7 @@
 #define exit_old_func 0x20 // deprectated!
 #define exit_func 0x21
 #define initparam_func 0x30
+#define loadsymbol_func 0x31
 #define resetstats_func 0x40
 #define dumpstats_func 0x41
 #define dumprststats_func 0x42
@@ -72,6 +73,7 @@ func:
 #define IVLE(reg) INST(m5_op, reg, 0, ivle_func)
 #define M5EXIT(reg) INST(m5_op, reg, 0, exit_func)
 #define INITPARAM(reg) INST(m5_op, reg, 0, initparam_func)
+#define LOADSYMBOL(reg) INST(m5_op, reg, 0, loadsymbol_func)
 #define RESET_STATS(r1, r2) INST(m5_op, r1, r2, resetstats_func)
 #define DUMP_STATS(r1, r2) INST(m5_op, r1, r2, dumpstats_func)
 #define DUMPRST_STATS(r1, r2) INST(m5_op, r1, r2, dumprststats_func)
@@ -139,6 +141,12 @@ LEAF(m5_initparam)
         RET
 END(m5_initparam)
 
+        .align 4
+LEAF(m5_loadsymbol)
+        LOADSYMBOL(0)
+        RET
+END(m5_loadsymbol)
+
         .align 4
 LEAF(m5_reset_stats)
         RESET_STATS(16, 17)