/* 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.
+ Copyright (C) 1992-2020 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"
extern int coff_flags;
int segmented_mode;
-/* This is non-zero if target was set from the command line. */
+/* This is non-zero if target was set from the command line.
+ If non-zero, 1 means Z8002 (non-segmented), 2 means Z8001 (segmented). */
static int z8k_target_from_cmdline;
static void
md_begin (void)
{
const opcode_entry_type *opcode;
- int idx = -1;
+ unsigned int idx = -1u;
opcode_hash_control = hash_new ();
}
/* Default to z8002. */
- if (! z8k_target_from_cmdline)
- s_segm (0);
+ s_segm (z8k_target_from_cmdline ? z8k_target_from_cmdline - 1 : 0);
/* Insert the pseudo ops, too. */
for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
{
opcode_entry_type *fake_opcode;
- fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
+ fake_opcode = XNEW (opcode_entry_type);
fake_opcode->name = md_pseudo_table[idx].poc_name;
fake_opcode->func = (void *) (md_pseudo_table + idx);
fake_opcode->opcode = 250;
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)
+whatreg (unsigned int *preg, 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;
+
+ *preg = new_reg;
+ return src;
}
/* Parse operands
in SRC after the reg name. */
static char *
-parse_reg (char *src, int *mode, unsigned int *reg)
+parse_reg (char *src, int *mode, unsigned int *preg)
{
- char *res = 0;
+ char *res = NULL;
char regno;
/* Check for stack pointer "sp" alias. */
if (segmented_mode)
{
*mode = CLASS_REG_LONG;
- *reg = 14;
+ *preg = 14;
}
else
{
*mode = CLASS_REG_WORD;
- *reg = 15;
+ *preg = 15;
}
return src + 2;
}
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);
- regno = *reg;
+ res = whatreg (preg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
+ regno = *preg;
if (regno > 14)
as_bad (_("register rr%d out of range"), regno);
if (regno & 1)
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);
- regno = *reg;
+ res = whatreg (preg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
+ regno = *preg;
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);
- regno = *reg;
+ res = whatreg (preg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
+ regno = *preg;
if (regno > 7)
as_bad (_("register rl%d out of range"), regno);
- *reg += 8;
+ *preg += 8;
}
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);
- regno = *reg;
+ res = whatreg (preg, src + 2);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
+ regno = *preg;
if (regno > 12)
as_bad (_("register rq%d out of range"), regno);
if (regno & 3)
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);
- regno = *reg;
+ res = whatreg (preg, src + 1);
+ if (res == NULL)
+ return NULL; /* Not a valid register name. */
+ regno = *preg;
if (regno > 15)
as_bad (_("register r%d out of range"), regno);
}
parse_exp (char *s, expressionS *op)
{
char *save = input_line_pointer;
- char *new;
+ char *new_pointer;
input_line_pointer = s;
expression (op);
if (op->X_op == O_absent)
as_bad (_("missing operand"));
- new = input_line_pointer;
+ new_pointer = input_line_pointer;
input_line_pointer = save;
- return new;
+ return new_pointer;
}
/* The many forms of operand:
/* Make sure the mode supplied is the size of a word. */
static void
-regword (int mode, char *string)
+regword (int mode, const char *string)
{
int ok;
/* Make sure the mode supplied is the size of an address. */
static void
-regaddr (int mode, char *string)
+regaddr (int mode, const char *string)
{
int ok;
struct ctrl_names {
int value;
- char *name;
+ const char *name;
};
static struct ctrl_names ctrl_table[] = {
struct flag_names {
int value;
- char *name;
+ const char *name;
};
static struct flag_names flag_table[] = {
struct interrupt_names {
int value;
- char *name;
+ const char *name;
};
static struct interrupt_names intr_table[] = {
struct cc_names {
int value;
- char *name;
+ const char *name;
};
static struct cc_names table[] = {
int found = 0;
unsigned int noperands = opcode->noperands;
- int this_index = opcode->idx;
+ unsigned int this_index = opcode->idx;
while (this_index == opcode->idx && !found)
{
static char buffer[20];
static void
-newfix (int ptr, int type, int size, expressionS *operand)
+newfix (int ptr, bfd_reloc_code_real_type type, int size, expressionS *operand)
{
- int is_pcrel = 0;
fixS *fixP;
/* Size is in nibbles. */
|| operand->X_op_symbol
|| operand->X_add_number)
{
+ int is_pcrel;
switch(type)
{
case BFD_RELOC_8_PCREL:
case BFD_RELOC_Z8K_CALLR:
case BFD_RELOC_Z8K_DISP7:
is_pcrel = 1;
+ break;
+ default:
+ is_pcrel = 0;
+ break;
}
fixP = fix_new_exp (frag_now, ptr, size / 2,
operand, is_pcrel, type);
}
static char *
-apply_fix (char *ptr, int type, expressionS *operand, int size)
+apply_fix (char *ptr, bfd_reloc_code_real_type type, expressionS *operand,
+ int size)
{
long n = operand->X_add_number;
*ptr++ = n >> 24;
*ptr++ = n >> 20;
*ptr++ = n >> 16;
+ /* Fall through. */
case 4: /* 4 nibbles == 16 bits. */
*ptr++ = n >> 12;
*ptr++ = n >> 8;
+ /* Fall through. */
case 2:
*ptr++ = n >> 4;
+ /* Fall through. */
case 1:
*ptr++ = n >> 0;
break;
case CLASS_REG_WORD:
case CLASS_REG_LONG:
case CLASS_REG_QUAD:
- /* Insert bit mattern of right reg. */
+ /* Insert bit pattern of right reg. */
*output_ptr++ = reg[c & 0xf];
break;
case CLASS_DISP:
/*case ARG_IMMNMINUS1: not used. */
case ARG_IMM4M1:
imm_operand->X_add_number--;
- /* Drop through. */
+ /* Fall through. */
case ARG_IMM4:
if (imm_operand->X_add_number > 15)
as_bad (_("immediate value out of range"));
break;
case ARG_NIM8:
imm_operand->X_add_number = -imm_operand->X_add_number;
- /* Drop through. */
+ /* Fall through. */
case ARG_IMM8:
output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2);
break;
}
/* 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 *
+const 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:";
size_t md_longopts_size = sizeof (md_longopts);
int
-md_parse_option (int c, char *arg)
+md_parse_option (int c, const char *arg)
{
switch (c)
{
case 'z':
if (!strcmp (arg, "8001"))
- s_segm (1);
+ z8k_target_from_cmdline = 2;
else if (!strcmp (arg, "8002"))
- s_segm (0);
+ z8k_target_from_cmdline = 1;
else
{
as_bad (_("invalid architecture -z%s"), arg);
return 0;
}
- z8k_target_from_cmdline = 1;
break;
case OPTION_RELAX:
{
arelent *reloc;
- reloc = xmalloc (sizeof (*reloc));
- reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
+ reloc = XNEW (arelent);
+ reloc->sym_ptr_ptr = XNEW (asymbol *);
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
reloc->addend = fixp->fx_offset;
if (! reloc->howto)
{
as_bad_where (fixp->fx_file, fixp->fx_line,
- "Cannot represent %s relocation in object file",
+ _("Cannot represent %s relocation in object file"),
bfd_get_reloc_code_name (fixp->fx_r_type));
abort ();
}
valueT
md_section_align (segT seg, valueT size)
{
- int align = bfd_get_section_alignment (stdoutput, seg);
+ int align = bfd_section_alignment (seg);
valueT mask = ((valueT) 1 << align) - 1;
return (size + mask) & ~mask;
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