gdb: add target_ops::supports_displaced_step
[deliverable/binutils-gdb.git] / gprof / alpha.c
index 74fd01fb30bd17d9d59a2961f9fef6e237f9750f..d84cdf0a916e01549ea560bc287f664714672c71 100644 (file)
@@ -1,67 +1,86 @@
 /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1983, 1993, 1998
+ *      The Regents of the University of California.  All rights reserved.
  *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement:  ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. Neither the name of the University nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  */
 #include "gprof.h"
+#include "search_list.h"
+#include "source.h"
+#include "symtab.h"
 #include "cg_arcs.h"
-#include "core.h"
+#include "corefile.h"
 #include "hist.h"
-#include "symtab.h"
 
 /*
  * Opcodes of the call instructions:
  */
-#define OP_Jxx 0x1a
-#define        OP_BSR  0x34
+#define OP_Jxx 0x1aU
+#define        OP_BSR  0x34U
 
-#define Jxx_FUNC_JMP           0
-#define Jxx_FUNC_JSR           1
-#define Jxx_FUNC_RET           2
-#define Jxx_FUNC_JSR_COROUTINE 3
+#define Jxx_FUNC_JMP           0U
+#define Jxx_FUNC_JSR           1U
+#define Jxx_FUNC_RET           2U
+#define Jxx_FUNC_JSR_COROUTINE 3U
 
-typedef union
-  {
-    struct
-      {
-       unsigned other:26;
-       unsigned op_code:6;
-      }
-    a;                         /* any format */
-    struct
-      {
-       int disp:21;
-       unsigned ra:5;
-       unsigned op_code:6;
-      }
-    b;                         /* branch format */
-    struct
-      {
-       int hint:14;
-       unsigned func:2;
-       unsigned rb:5;
-       unsigned ra:5;
-       unsigned op_code:6;
-      }
-    j;                         /* jump format */
-  }
-alpha_Instruction;
+/* *INDENT-OFF* */
+/* Here to document only.  We can't use this when cross compiling as
+   the bitfield layout might not be the same as native.
+
+   typedef union
+     {
+       struct
+         {
+          unsigned other:26;
+          unsigned op_code:6;
+         }
+       a;                              -- any format
+       struct
+         {
+          int disp:21;
+          unsigned ra:5;
+          unsigned op_code:6;
+         }
+       b;                              -- branch format
+       struct
+         {
+          int hint:14;
+          unsigned func:2;
+          unsigned rb:5;
+          unsigned ra:5;
+          unsigned op_code:6;
+         }
+       j;                              -- jump format
+     }
+    alpha_Instruction;
+*/
+/* *INDENT-ON* */
 
 static Sym indirect_child;
 
+void alpha_find_call (Sym *, bfd_vma, bfd_vma);
 
 /*
  * On the Alpha we can only detect PC relative calls, which are
@@ -71,47 +90,30 @@ static Sym indirect_child;
  *  potentially call integer division routines, for example.)
  */
 void
-alpha_find_call (parent, p_lowpc, p_highpc)
-     Sym *parent;
-     bfd_vma p_lowpc;
-     bfd_vma p_highpc;
+alpha_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc)
 {
-  static bfd_vma delta = 0;
-  bfd_vma dest_pc;
-  alpha_Instruction *pc;
+  bfd_vma pc, dest_pc;
+  unsigned int insn;
   Sym *child;
 
-  if (!delta)
+  if (indirect_child.name == NULL)
     {
-      delta = (bfd_vma) core_text_space - core_text_sect->vma;
-
       sym_init (&indirect_child);
-      indirect_child.name = "<indirect child>";
+      indirect_child.name = _("<indirect child>");
       indirect_child.cg.prop.fract = 1.0;
       indirect_child.cg.cyc.head = &indirect_child;
     }
 
-  if (!core_text_space)
-    {
-      return;
-    }
-  if (p_lowpc < s_lowpc)
-    {
-      p_lowpc = s_lowpc;
-    }
-  if (p_highpc > s_highpc)
+  DBG (CALLDEBUG, printf (_("[find_call] %s: 0x%lx to 0x%lx\n"),
+                         parent->name, (unsigned long) p_lowpc,
+                         (unsigned long) p_highpc));
+  for (pc = (p_lowpc + 3) & ~(bfd_vma) 3; pc < p_highpc; pc += 4)
     {
-      p_highpc = s_highpc;
-    }
-  DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
-                         parent->name, p_lowpc, p_highpc));
-  for (pc = (alpha_Instruction *) (p_lowpc + delta);
-       pc < (alpha_Instruction *) (p_highpc + delta);
-       ++pc)
-    {
-      switch (pc->a.op_code)
+      insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space
+                                   + pc - core_text_sect->vma));
+      switch (insn & (0x3fU << 26))
        {
-       case OP_Jxx:
+       case OP_Jxx << 26:
          /*
           * There is no simple and reliable way to determine the
           * target of a jsr (the hint bits help, but there aren't
@@ -120,40 +122,46 @@ alpha_find_call (parent, p_lowpc, p_highpc)
           * to INDIRECT_CHILD---that way the user it at least able
           * to see that there are other calls as well.
           */
-         if (pc->j.func == Jxx_FUNC_JSR
-             || pc->j.func == Jxx_FUNC_JSR_COROUTINE)
+         if ((insn & (3 << 14)) == Jxx_FUNC_JSR << 14
+             || (insn & (3 << 14)) == Jxx_FUNC_JSR_COROUTINE << 14)
            {
              DBG (CALLDEBUG,
-                  printf ("[find_call] 0x%lx: jsr%s <indirect_child>\n",
-                          (bfd_vma) pc - delta,
-                          pc->j.func == Jxx_FUNC_JSR ? "" : "_coroutine"));
-             arc_add (parent, &indirect_child, 0);
+                  printf (_("[find_call] 0x%lx: jsr%s <indirect_child>\n"),
+                          (unsigned long) pc,
+                          ((insn & (3 << 14)) == Jxx_FUNC_JSR << 14
+                           ? "" : "_coroutine")));
+             arc_add (parent, &indirect_child, (unsigned long) 0);
            }
          break;
 
-       case OP_BSR:
+       case OP_BSR << 26:
          DBG (CALLDEBUG,
-              printf ("[find_call] 0x%lx: bsr", (bfd_vma) pc - delta));
+              printf (_("[find_call] 0x%lx: bsr"), (unsigned long) pc));
          /*
           * Regular PC relative addressing.  Check that this is the
           * address of a function.  The linker sometimes redirects
           * the entry point by 8 bytes to skip loading the global
-          * pointer, so we all for either address:
+          * pointer, so we allow for either address:
           */
-         dest_pc = ((bfd_vma) (pc + 1 + pc->b.disp)) - delta;
-         if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
+         dest_pc = pc + 4 + (((bfd_signed_vma) (insn & 0x1fffff)
+                              ^ 0x100000) - 0x100000);
+         if (hist_check_address (dest_pc))
            {
              child = sym_lookup (&symtab, dest_pc);
-             DBG (CALLDEBUG,
-                  printf (" 0x%lx\t; name=%s, addr=0x%lx",
-                          dest_pc, child->name, child->addr));
-             if (child->addr == dest_pc || child->addr == dest_pc - 8)
-               {
-                 DBG (CALLDEBUG, printf ("\n"));
-                 /* a hit:  */
-                 arc_add (parent, child, 0);
-                 continue;
-               }
+              if (child)
+                {
+                 DBG (CALLDEBUG,
+                      printf (" 0x%lx\t; name=%s, addr=0x%lx",
+                              (unsigned long) dest_pc, child->name,
+                              (unsigned long) child->addr));
+                 if (child->addr == dest_pc || child->addr == dest_pc - 8)
+                   {
+                     DBG (CALLDEBUG, printf ("\n"));
+                     /* a hit:  */
+                     arc_add (parent, child, (unsigned long) 0);
+                     continue;
+                   }
+                }
            }
          /*
           * Something funny going on.
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