/* tc-z8k.c -- Assemble code for the Zilog Z800n
Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003,
- 2005 Free Software Foundation, Inc.
+ 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
/* Written By Steve Chamberlain <sac@cygnus.com>. */
-#include <stdio.h>
-
#include "as.h"
-#include "bfd.h"
#include "safe-ctype.h"
#define DEFINE_TABLE
#include "opcodes/z8k-opc.h"
static int the_flags;
static int the_interrupt;
+/* Determine register number. src points to the ascii number
+ (after "rl", "rh", "r", "rr", or "rq"). If a character
+ outside the set of {0,',',')','('} follows the number,
+ return NULL to indicate that it's not a valid register
+ number. */
+
static char *
whatreg (unsigned int *reg, char *src)
{
+ unsigned int new_reg;
+
+ /* src[0] is already known to be a digit. */
if (ISDIGIT (src[1]))
{
- *reg = (src[0] - '0') * 10 + src[1] - '0';
- return src + 2;
+ new_reg = (src[0] - '0') * 10 + src[1] - '0';
+ src += 2;
}
else
{
- *reg = (src[0] - '0');
- return src + 1;
+ new_reg = (src[0] - '0');
+ src += 1;
}
+
+ if (src[0] != 0 && src[0] != ',' && src[0] != '(' && src[0] != ')')
+ return NULL;
+
+ *reg = new_reg;
+ return src;
}
/* Parse operands
static char *
parse_reg (char *src, int *mode, unsigned int *reg)
{
- char *res = 0;
+ char *res = NULL;
char regno;
/* Check for stack pointer "sp" alias. */
if (src[1] == 'r' || src[1] == 'R')
{
if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rr'. */
+ return NULL; /* Assume no register name but a label starting with 'rr'. */
*mode = CLASS_REG_LONG;
res = whatreg (reg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
regno = *reg;
if (regno > 14)
as_bad (_("register rr%d out of range"), regno);
else if (src[1] == 'h' || src[1] == 'H')
{
if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rh'. */
+ return NULL; /* Assume no register name but a label starting with 'rh'. */
*mode = CLASS_REG_BYTE;
res = whatreg (reg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
regno = *reg;
if (regno > 7)
as_bad (_("register rh%d out of range"), regno);
else if (src[1] == 'l' || src[1] == 'L')
{
if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rl'. */
+ return NULL; /* Assume no register name but a label starting with 'rl'. */
*mode = CLASS_REG_BYTE;
res = whatreg (reg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
regno = *reg;
if (regno > 7)
as_bad (_("register rl%d out of range"), regno);
else if (src[1] == 'q' || src[1] == 'Q')
{
if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rq'. */
+ return NULL; /* Assume no register name but a label starting with 'rq'. */
*mode = CLASS_REG_QUAD;
res = whatreg (reg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
regno = *reg;
if (regno > 12)
as_bad (_("register rq%d out of range"), regno);
else
{
if (src[1] < '0' || src[1] > '9')
- return res; /* Assume no register name but a label starting with 'r'. */
+ return NULL; /* Assume no register name but a label starting with 'r'. */
*mode = CLASS_REG_WORD;
res = whatreg (reg, src + 1);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
regno = *reg;
if (regno > 15)
as_bad (_("register r%d out of range"), regno);
}
/* Various routines to kill one day. */
-/* Equal to MAX_PRECISION in atof-ieee.c. */
-#define MAX_LITTLENUMS 6
-
-/* Turn a string in input_line_pointer into a floating point constant
- of type TYPE, and store the appropriate bytes in *LITP. The number
- of LITTLENUMS emitted is stored in *SIZEP. An error message is
- returned, or NULL on OK. */
char *
md_atof (int type, char *litP, int *sizeP)
{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
-
- switch (type)
- {
- case 'f':
- case 'F':
- case 's':
- case 'S':
- prec = 2;
- break;
-
- case 'd':
- case 'D':
- case 'r':
- case 'R':
- prec = 4;
- break;
-
- case 'x':
- case 'X':
- prec = 6;
- break;
-
- case 'p':
- case 'P':
- prec = 6;
- break;
-
- default:
- *sizeP = 0;
- return _("Bad call to MD_ATOF()");
- }
- t = atof_ieee (input_line_pointer, type, words);
- if (t)
- input_line_pointer = t;
-
- *sizeP = prec * sizeof (LITTLENUM_TYPE);
- for (wordP = words; prec--;)
- {
- md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
- return 0;
+ return ieee_md_atof (type, litP, sizeP, TRUE);
}
\f
const char *md_shortopts = "z:";
projects / deliverable / binutils-gdb.git / blobdiff