remove gdb_string.h

[deliverable/binutils-gdb.git] / gdb / sparc-tdep.c

diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c
index 3164ed3c8b47729434d9e8dab5aa893c0daea1e7..950ca8cd55cc2519559551bae1f0260f7958c55d 100644 (file)
--- a/gdb/sparc-tdep.c
+++ b/gdb/sparc-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for SPARC.
 
-   Copyright (C) 2003-2012 Free Software Foundation, Inc.
+   Copyright (C) 2003-2013 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -36,9 +36,10 @@
 #include "value.h"
 
 #include "gdb_assert.h"
-#include "gdb_string.h"
+#include <string.h>
 
 #include "sparc-tdep.h"
+#include "sparc-ravenscar-thread.h"
 
 struct regset;
 
@@ -120,6 +121,37 @@ sparc_is_unimp_insn (CORE_ADDR pc)
   return ((insn & 0xc1c00000) == 0);
 }
 
+/* Return non-zero if the instruction corresponding to PC is an
+   "annulled" branch, i.e. the annul bit is set.  */
+
+int
+sparc_is_annulled_branch_insn (CORE_ADDR pc)
+{
+  /* The branch instructions featuring an annul bit can be identified
+     by the following bit patterns:
+
+     OP=0
+      OP2=1: Branch on Integer Condition Codes with Prediction (BPcc).
+      OP2=2: Branch on Integer Condition Codes (Bcc).
+      OP2=5: Branch on FP Condition Codes with Prediction (FBfcc).
+      OP2=6: Branch on FP Condition Codes (FBcc).
+      OP2=3 && Bit28=0:
+             Branch on Integer Register with Prediction (BPr).
+
+     This leaves out ILLTRAP (OP2=0), SETHI/NOP (OP2=4) and the V8
+     coprocessor branch instructions (Op2=7).  */
+
+  const unsigned long insn = sparc_fetch_instruction (pc);
+  const unsigned op2 = X_OP2 (insn);
+
+  if ((X_OP (insn) == 0)
+      && ((op2 == 1) || (op2 == 2) || (op2 == 5) || (op2 == 6)
+         || ((op2 == 3) && ((insn & 0x10000000) == 0))))
+    return X_A (insn);
+  else
+    return 0;
+}
+
 /* OpenBSD/sparc includes StackGhost, which according to the author's
    website http://stackghost.cerias.purdue.edu "... transparently and
    automatically protects applications' stack frames; more
@@ -854,7 +886,7 @@ sparc_analyze_prologue (struct gdbarch *gdbarch, CORE_ADDR pc,
      dynamic linker patches up the first PLT with some code that
      starts with a SAVE instruction.  Patch up PC such that it points
      at the start of our PLT entry.  */
-  if (tdep->plt_entry_size > 0 && in_plt_section (current_pc, NULL))
+  if (tdep->plt_entry_size > 0 && in_plt_section (current_pc))
     pc = current_pc - ((current_pc - pc) % tdep->plt_entry_size);
 
   insn = sparc_fetch_instruction (pc);
@@ -1369,15 +1401,21 @@ sparc32_return_value (struct gdbarch *gdbarch, struct value *function,
   if (sparc_structure_or_union_p (type)
       || (sparc_floating_p (type) && TYPE_LENGTH (type) == 16))
     {
+      ULONGEST sp;
+      CORE_ADDR addr;
+
       if (readbuf)
        {
-         ULONGEST sp;
-         CORE_ADDR addr;
-
          regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
          addr = read_memory_unsigned_integer (sp + 64, 4, byte_order);
          read_memory (addr, readbuf, TYPE_LENGTH (type));
        }
+      if (writebuf)
+       {
+         regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
+         addr = read_memory_unsigned_integer (sp + 64, 4, byte_order);
+         write_memory (addr, writebuf, TYPE_LENGTH (type));
+       }
 
       return RETURN_VALUE_ABI_PRESERVES_ADDRESS;
     }
@@ -1531,7 +1569,6 @@ sparc_analyze_control_transfer (struct frame_info *frame,
          if (X_A (insn))
            *npc = 0;
 
-         gdb_assert (offset != 0);
          return pc + offset;
        }
     }
@@ -1683,6 +1720,8 @@ sparc32_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
     set_gdbarch_regset_from_core_section (gdbarch,
                                          sparc_regset_from_core_section);
 
+  register_sparc_ravenscar_ops (gdbarch);
+
   return gdbarch;
 }
 \f