/* Print instructions for the Motorola 88000, for GDB and GNU Binutils.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1993, 1998, 2000
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1993, 1998, 2000, 2001
Free Software Foundation, Inc.
Contributed by Data General Corporation, November 1989.
Partially derived from an earlier printcmd.c.
m88kdis PARAMS ((bfd_vma, unsigned long, struct disassemble_info *));
static void
-printop PARAMS ((struct disassemble_info *, OPSPEC *,
- unsigned long, bfd_vma, int));
+printop PARAMS ((struct disassemble_info *, OPSPEC *, unsigned long, bfd_vma, int));
static void
init_disasm PARAMS ((void));
static void
install PARAMS ((INSTAB *instptr));
+\f
-/*
-* Disassemble an M88000 Instruction
-*
-*
-* This module decodes the instruction at memaddr.
-*
-* Revision History
-*
-* Revision 1.0 11/08/85 Creation date by Motorola
-* 05/11/89 R. Trawick adapted to GDB interface.
-* 07/12/93 Ian Lance Taylor updated to
-* binutils interface.
-*/
+/* Disassemble an M88000 instruction at `memaddr'. */
int
print_insn_m88k (memaddr, info)
bfd_byte buffer[4];
int status;
- /* Instruction addresses may have low two bits set. Clear them. */
+ /* Instruction addresses may have low two bits set. Clear them. */
memaddr &=~ (bfd_vma) 3;
status = (*info->read_memory_func) (memaddr, buffer, 4, info);
}
/*
- * disassemble the instruction in 'instruction'.
- * 'pc' should be the address of this instruction, it will
- * be used to print the target address if this is a relative jump or call
- * the disassembled instruction is written to 'info'.
+ * Disassemble the instruction in `instruction'.
+ * `pc' should be the address of this instruction, it will be used to
+ * print the target address if this is a relative jump or call the
+ * disassembled instruction is written to `info'.
+ *
* The function returns the length of this instruction in bytes.
*/
if (! ihashtab_initialized)
init_disasm ();
- /* create the appropriate mask to isolate the opcode */
+ /* Create the appropriate mask to isolate the opcode. */
opmask = DEFMASK;
class = instruction & DEFMASK;
if ((class >= SFU0) && (class <= SFU7))
else if (class == RRI10)
opmask = RRI10MASK;
- /* isolate the opcode */
+ /* Isolate the opcode. */
opcode = instruction & opmask;
- /* search the hash table with the isolated opcode */
+ /* Search the hash table with the isolated opcode. */
for (entry_ptr = hashtable[opcode % HASHVAL];
(entry_ptr != NULL) && (entry_ptr->opcode != opcode);
entry_ptr = entry_ptr->next)
}
\f
/*
-* Decode an Operand of an Instruction
-*
-* Functional Description
-*
-* This module formats and writes an operand of an instruction to info
-* based on the operand specification. When the first flag is set this
-* is the first operand of an instruction. Undefined operand types
-* cause a <dis error> message.
-*
-* Parameters
-* disassemble_info where the operand may be printed
-* OPSPEC *opptr Pointer to an operand specification
-* UINT inst Instruction from which operand is extracted
-* UINT pc PC of instruction; used for pc-relative disp.
-* int first Flag which if nonzero indicates the first
-* operand of an instruction
-*
-* Output
-*
-* The operand specified is extracted from the instruction and is
-* written to buf in the format specified. The operand is preceded
-* by a comma if it is not the first operand of an instruction and it
-* is not a register indirect form. Registers are preceded by 'r' and
-* hex values by '0x'.
-*
-* Revision History
-*
-* Revision 1.0 11/08/85 Creation date
-*/
+ * Decode an Operand of an instruction.
+ *
+ * This function formats and writes an operand of an instruction to
+ * info based on the operand specification. When the `first' flag is
+ * set this is the first operand of an instruction. Undefined operand
+ * types cause a <dis error> message.
+ *
+ * Parameters:
+ * disassemble_info where the operand may be printed
+ * OPSPEC *opptr pointer to an operand specification
+ * UINT inst instruction from which operand is extracted
+ * UINT pc pc of instruction; used for pc-relative disp.
+ * int first flag which if nonzero indicates the first
+ * operand of an instruction
+ *
+ * The operand specified is extracted from the instruction and is
+ * written to buf in the format specified. The operand is preceded by
+ * a comma if it is not the first operand of an instruction and it is
+ * not a register indirect form. Registers are preceded by 'r' and
+ * hex values by '0x'.
+ */
static void
printop (info, opptr, inst, pc, first)
else
(*info->fprintf_func) (info->stream, "%x", extracted_field);
break;
-
+
case PCREL:
(*info->print_address_func)
(pc + (4 * (SEXT (inst, opptr->offset, opptr->width))),
case BF:
(*info->fprintf_func) (info->stream, "%d<%d>",
- UEXT (inst, (opptr->offset) + 5, 5),
- UEXT (inst, opptr->offset, 5));
+ UEXT (inst, (opptr->offset) + 5, 5),
+ UEXT (inst, opptr->offset, 5));
break;
default:
}
/*
-* Initialize the Disassembler Instruction Table
-*
-* Initialize the hash table and instruction table for the disassembler.
-* This should be called once before the first call to disasm().
-*
-* Parameters
-*
-* Output
-*
-* If the debug option is selected, certain statistics about the hashing
-* distribution are written to stdout.
-*
-* Revision History
-*
-* Revision 1.0 11/08/85 Creation date
-*/
+ * Initialize the disassembler instruction table.
+ *
+ * Initialize the hash table and instruction table for the
+ * disassembler. This should be called once before the first call to
+ * disasm().
+ */
static void
init_disasm ()
{
- int i, size;
-
- for (i = 0; i < HASHVAL; i++)
- hashtable[i] = NULL;
-
- size = sizeof (instructions) / sizeof (INSTAB);
- for (i = 0; i < size; i++)
- install (&instructions[i]);
+ int i, size;
+
+ for (i = 0; i < HASHVAL; i++)
+ hashtable[i] = NULL;
+
+ size = sizeof (instructions) / sizeof (INSTAB);
+ for (i = 0; i < size; i++)
+ install (&instructions[i]);
}
/*
-* Insert an instruction into the disassembler table by hashing the
-* opcode and inserting it into the linked list for that hash value.
-*
-* Parameters
-*
-* INSTAB *instptr Pointer to the entry in the instruction table
-* to be installed
-*
-* Revision 1.0 11/08/85 Creation date
-* 05/11/89 R. TRAWICK ADAPTED FROM MOTOROLA
-*/
+ * Insert an instruction into the disassembler table by hashing the
+ * opcode and inserting it into the linked list for that hash value.
+ */
static void
install (instptr)
projects / binutils-gdb.git / commitdiff