gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / opcodes / mcore-dis.c

diff --git a/opcodes/mcore-dis.c b/opcodes/mcore-dis.c
index 39412663e540b7a1e566e06fe2da81c7e1003908..584e38787cf713011b27949e13044c910bc5aefa 100644 (file)
--- a/opcodes/mcore-dis.c
+++ b/opcodes/mcore-dis.c
@@ -1,6 +1,5 @@
 /* Disassemble Motorola M*Core instructions.
-   Copyright 1993, 1999, 2000, 2001, 2002, 2005, 2007, 2009
-   Free Software Foundation, Inc.
+   Copyright (C) 1993-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU opcodes library.
 
@@ -21,11 +20,12 @@
 
 #include "sysdep.h"
 #include <stdio.h>
+#include "libiberty.h"
 #define STATIC_TABLE
 #define DEFINE_TABLE
 
 #include "mcore-opc.h"
-#include "dis-asm.h"
+#include "disassemble.h"
 
 /* Mask for each mcore_opclass: */
 static const unsigned short imsk[] = {
@@ -89,15 +89,14 @@ static const char *crname[] = {
 static const unsigned isiz[] = { 2, 0, 1, 0 };
 
 int
-print_insn_mcore (memaddr, info)
-     bfd_vma memaddr;
-     struct disassemble_info *info;
+print_insn_mcore (bfd_vma memaddr,
+                 struct disassemble_info *info)
 {
   unsigned char ibytes[4];
   fprintf_ftype print_func = info->fprintf_func;
   void *stream = info->stream;
   unsigned short inst;
-  const mcore_opcode_info *op;
+  unsigned int i;
   int status;
 
   info->bytes_per_chunk = 2;
@@ -118,19 +117,19 @@ print_insn_mcore (memaddr, info)
     abort ();
 
   /* Just a linear search of the table.  */
-  for (op = mcore_table; op->name != 0; op++)
-    if (op->inst == (inst & imsk[op->opclass]))
+  for (i = 0; i < ARRAY_SIZE (mcore_table); i++)
+    if (mcore_table[i].inst == (inst & imsk[mcore_table[i].opclass]))
       break;
 
-  if (op->name == 0)
+  if (i == ARRAY_SIZE (mcore_table))
     (*print_func) (stream, ".short 0x%04x", inst);
   else
     {
       const char *name = grname[inst & 0x0F];
 
-      (*print_func) (stream, "%s", op->name);
+      (*print_func) (stream, "%s", mcore_table[i].name);
 
-      switch (op->opclass)
+      switch (mcore_table[i].opclass)
        {
        case O0:
          break;
@@ -197,18 +196,14 @@ print_insn_mcore (memaddr, info)
 
        case BR:
          {
-           long val = inst & 0x3FF;
+           uint32_t val = ((inst & 0x3FF) ^ 0x400) - 0x400;
 
-           if (inst & 0x400)
-             val |= 0xFFFFFC00;
+           val = memaddr + 2 + (val << 1);
+           (*print_func) (stream, "\t0x%x", val);
 
-           (*print_func) (stream, "\t0x%lx", (long)(memaddr + 2 + (val << 1)));
-
-           if (strcmp (op->name, "bsr") == 0)
+           if (strcmp (mcore_table[i].name, "bsr") == 0)
              {
                /* For bsr, we'll try to get a symbol for the target.  */
-               val = memaddr + 2 + (val << 1);
-
                if (info->print_address_func && val != 0)
                  {
                    (*print_func) (stream, "\t// ");
@@ -220,20 +215,22 @@ print_insn_mcore (memaddr, info)
 
        case BL:
          {
-           long val;
-           val = (inst & 0x000F);
-           (*print_func) (stream, "\t%s, 0x%lx",
+           uint32_t val = inst & 0x000F;
+           (*print_func) (stream, "\t%s, 0x%x",
                           grname[(inst >> 4) & 0xF],
-                          (long) (memaddr - (val << 1)));
+                          (uint32_t) (memaddr - (val << 1)));
          }
          break;
 
        case LR:
          {
-           unsigned long val;
+           uint32_t val;
 
-           val = (memaddr + 2 + ((inst & 0xFF) << 2)) & 0xFFFFFFFC;
+           val = (memaddr + 2 + ((inst & 0xFF) << 2)) & ~3;
 
+           /* We are not reading an instruction, so allow
+              reads to extend beyond the next symbol.  */
+           info->stop_vma = 0;
            status = info->read_memory_func (val, ibytes, 4, info);
            if (status != 0)
              {
@@ -242,28 +239,31 @@ print_insn_mcore (memaddr, info)
              }
 
            if (info->endian == BFD_ENDIAN_LITTLE)
-             val = (ibytes[3] << 24) | (ibytes[2] << 16)
-               | (ibytes[1] << 8) | (ibytes[0]);
+             val = (((unsigned) ibytes[3] << 24) | (ibytes[2] << 16)
+                    | (ibytes[1] << 8) | (ibytes[0]));
            else
-             val = (ibytes[0] << 24) | (ibytes[1] << 16)
-               | (ibytes[2] << 8) | (ibytes[3]);
+             val = (((unsigned) ibytes[0] << 24) | (ibytes[1] << 16)
+                    | (ibytes[2] << 8) | (ibytes[3]));
 
            /* Removed [] around literal value to match ABI syntax 12/95.  */
-           (*print_func) (stream, "\t%s, 0x%lX", grname[(inst >> 8) & 0xF], val);
+           (*print_func) (stream, "\t%s, 0x%X", grname[(inst >> 8) & 0xF], val);
 
            if (val == 0)
-             (*print_func) (stream, "\t// from address pool at 0x%lx",
-                            (long) (memaddr + 2
-                                    + ((inst & 0xFF) << 2)) & 0xFFFFFFFC);
+             (*print_func) (stream, "\t// from address pool at 0x%x",
+                            (uint32_t) (memaddr + 2
+                                        + ((inst & 0xFF) << 2)) & ~3);
          }
          break;
 
        case LJ:
          {
-           unsigned long val;
+           uint32_t val;
 
-           val = (memaddr + 2 + ((inst & 0xFF) << 2)) & 0xFFFFFFFC;
+           val = (memaddr + 2 + ((inst & 0xFF) << 2)) & ~3;
 
+           /* We are not reading an instruction, so allow
+              reads to extend beyond the next symbol.  */
+           info->stop_vma = 0;
            status = info->read_memory_func (val, ibytes, 4, info);
            if (status != 0)
              {
@@ -272,14 +272,14 @@ print_insn_mcore (memaddr, info)
              }
 
            if (info->endian == BFD_ENDIAN_LITTLE)
-             val = (ibytes[3] << 24) | (ibytes[2] << 16)
-               | (ibytes[1] << 8) | (ibytes[0]);
+             val = (((unsigned) ibytes[3] << 24) | (ibytes[2] << 16)
+                    | (ibytes[1] << 8) | (ibytes[0]));
            else
-             val = (ibytes[0] << 24) | (ibytes[1] << 16)
-               | (ibytes[2] << 8) | (ibytes[3]);
+             val = (((unsigned) ibytes[0] << 24) | (ibytes[1] << 16)
+                    | (ibytes[2] << 8) | (ibytes[3]));
 
            /* Removed [] around literal value to match ABI syntax 12/95.  */
-           (*print_func) (stream, "\t0x%lX", val);
+           (*print_func) (stream, "\t0x%X", val);
            /* For jmpi/jsri, we'll try to get a symbol for the target.  */
            if (info->print_address_func && val != 0)
              {
@@ -288,9 +288,9 @@ print_insn_mcore (memaddr, info)
              }
            else
              {
-               (*print_func) (stream, "\t// from address pool at 0x%lx",
-                              (long) (memaddr + 2
-                                      + ((inst & 0xFF) << 2)) & 0xFFFFFFFC);
+               (*print_func) (stream, "\t// from address pool at 0x%x",
+                              (uint32_t) (memaddr + 2
+                                          + ((inst & 0xFF) << 2)) & ~3);
              }
          }
          break;