Add init_dwarf_regnames_s390

Define and use DWARF register names for s390.

binutils/ChangeLog:

	* dwarf.h (init_dwarf_regnames_s390): Declare.
	* dwarf.c (dwarf_regnames_s390): New.
	(init_dwarf_regnames_s390): New.
	(init_dwarf_regnames): Call it.
	* objdump.c (dump_dwarf): Likewise.

binutils/ChangeLog

@@ -1,3 +1,11 @@
+2016-04-13  Andreas Arnez  <arnez@linux.vnet.ibm.com>
+
+	* dwarf.h (init_dwarf_regnames_s390): Declare.
+	* dwarf.c (dwarf_regnames_s390): New.
+	(init_dwarf_regnames_s390): New.
+	(init_dwarf_regnames): Call it.
+	* objdump.c (dump_dwarf): Likewise.
+
 2016-04-11  Maciej W. Rozycki  <macro@imgtec.com>
 
 	* testsuite/binutils-all/mips/mips16-undecoded.d: New test.

binutils/dwarf.c

@@ -5464,6 +5464,30 @@ init_dwarf_regnames_aarch64 (void)
   dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_aarch64);
 }
 
+static const char *const dwarf_regnames_s390[] =
+{
+  /* Avoid saying "r5 (r5)", so omit the names of r0-r15.  */
+  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+  "f0",  "f2",  "f4",  "f6",  "f1",  "f3",  "f5",  "f7",
+  "f8",  "f10", "f12", "f14", "f9",  "f11", "f13", "f15",
+  "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
+  "cr8", "cr9", "cr10", "cr11", "cr12", "cr13", "cr14", "cr15",
+  "a0",  "a1",  "a2",  "a3",  "a4",  "a5",  "a6",  "a7",
+  "a8",  "a9",  "a10", "a11", "a12", "a13", "a14", "a15",
+  "pswm", "pswa",
+  NULL, NULL,
+  "v16", "v18", "v20", "v22", "v17", "v19", "v21", "v23",
+  "v24", "v26", "v28", "v30", "v25", "v27", "v29", "v31",
+};
+
+void
+init_dwarf_regnames_s390 (void)
+{
+  dwarf_regnames = dwarf_regnames_s390;
+  dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_s390);
+}
+
 void
 init_dwarf_regnames (unsigned int e_machine)
 {
@@ -5487,6 +5511,10 @@ init_dwarf_regnames (unsigned int e_machine)
       init_dwarf_regnames_aarch64 ();
       break;
 
+    case EM_S390:
+      init_dwarf_regnames_s390 ();
+      break;
+
     default:
       break;
     }

binutils/dwarf.h

@@ -204,6 +204,7 @@ extern void init_dwarf_regnames_i386 (void);
 extern void init_dwarf_regnames_iamcu (void);
 extern void init_dwarf_regnames_x86_64 (void);
 extern void init_dwarf_regnames_aarch64 (void);
+extern void init_dwarf_regnames_s390 (void);
 
 extern int load_debug_section (enum dwarf_section_display_enum, void *);
 extern void free_debug_section (enum dwarf_section_display_enum);

binutils/objdump.c

@@ -2527,6 +2527,10 @@ dump_dwarf (bfd *abfd)
       init_dwarf_regnames_aarch64();
       break;
 
+    case bfd_arch_s390:
+      init_dwarf_regnames_s390 ();
+      break;
+
     default:
       break;
     }