[LV-tools-commit] toolchain/src/opcodes vax-dis.c,1.1.1.1,1.2

[Jan-Benedict G. <jb...@us...>]

Update of /cvsroot/linux-vax/toolchain/src/opcodes
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv9422

Modified Files:
	vax-dis.c 
Log Message:
- Decode entry mask.


Index: vax-dis.c
===================================================================
RCS file: /cvsroot/linux-vax/toolchain/src/opcodes/vax-dis.c,v
retrieving revision 1.1.1.1
retrieving revision 1.2
diff -u -d -r1.1.1.1 -r1.2
--- vax-dis.c	17 Feb 2003 00:33:08 -0000	1.1.1.1
+++ vax-dis.c	12 Mar 2005 12:51:16 -0000	1.2
@@ -34,6 +34,21 @@
   "r8", "r9", "r10", "r11", "ap", "fp", "sp", "pc"
 };
 
+/* Definitions for the function entry mask bits.  */                                             
+static char *entry_mask_bit[] =                                                                  
+{                                                                                                
+  /* Registers 0 and 1 shall not be saved, since they're used to pass back                       
+     a function's result to its caller...  */                                                   
+  "~r0~", "~r1~",                                                                                
+  /* Registers 2 .. 11 are normal registers.  */                                                 
+  "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11",                                  
+  /* Registers 12 and 13 are argument and frame pointer and must not                             
+     be saved by using the entry mask.  */                                                       
+  "~ap~", "~fp~",                                                                                
+  /* Bits 14 and 15 control integer and decimal overflow.  */                                    
+  "IntOvfl", "DecOvfl",                                                                          
+};                                                                                               
+
 /* Sign-extend an (unsigned char). */
 #if __STDC__ == 1
 #define COERCE_SIGNED_CHAR(ch) ((signed char)(ch))
@@ -140,6 +155,27 @@
       buffer[1] = 0;
     }
 
+  /* Decode function entry mask.  */
+  if (info->symbols
+      && info->symbols[0]
+      && (info->symbols[0]->flags & BSF_FUNCTION)
+      && memaddr == bfd_asymbol_value (info->symbols[0]))
+    {
+      int i = 0;
+      int register_mask = buffer[1] << 8 | buffer[0];
+
+      (*info->fprintf_func) (info->stream, ".word = 0x%04x # Entry mask: <", 
+			     register_mask);
+
+      for (i = 15; i >= 0; i--)
+        if (register_mask & (1 << i))
+          (*info->fprintf_func) (info->stream, " %s", entry_mask_bit[i]);
+
+      (*info->fprintf_func) (info->stream, " >");
+
+      return 2;
+    }
+
   for (votp = &votstrs[0]; votp->name[0]; votp++)
     {
       register vax_opcodeT opcode = votp->detail.code;