-/* tc-z8k.c -- Assemble code for the Zilog Z800N
- Copyright (C) 1992 Free Software Foundation.
-
+/* tc-z8k.c -- Assemble code for the Zilog Z800n
+ Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003
+ 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)
any later version.
-
+
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
-/*
- Written By Steve Chamberlain
- sac@cygnus.com
- */
+/* Written By Steve Chamberlain <sac@cygnus.com>. */
-#include <stdio.h>
#define DEFINE_TABLE
-#include "../opcodes/z8k-opc.h"
+#include <stdio.h>
#include "as.h"
#include "bfd.h"
-#include <ctype.h>
-#include "listing.h"
+#include "safe-ctype.h"
+#include "opcodes/z8k-opc.h"
-char comment_chars[] = { ';',0 };
-char line_separator_chars[] = { '$' ,0};
+const char comment_chars[] = "!";
+const char line_comment_chars[] = "#";
+const char line_separator_chars[] = ";";
extern int machine;
extern int coff_flags;
int segmented_mode;
-int md_reloc_size ;
-
-/* This table describes all the machine specific pseudo-ops the assembler
- has to support. The fields are:
- pseudo-op name without dot
- function to call to execute this pseudo-op
- Integer arg to pass to the function
- */
+const int md_reloc_size;
-void cons();
+/* This is non-zero if target was set from the command line. */
+static int z8k_target_from_cmdline;
-
-void s_segm()
+static void
+s_segm (int segm)
{
- segmented_mode = 1;
- machine = bfd_mach_z8001;
- coff_flags = F_Z8001;
+ if (segm)
+ {
+ segmented_mode = 1;
+ machine = bfd_mach_z8001;
+ coff_flags = F_Z8001;
+ }
+ else
+ {
+ segmented_mode = 0;
+ machine = bfd_mach_z8002;
+ coff_flags = F_Z8002;
+ }
}
-void s_unseg()
+static void
+even (int ignore ATTRIBUTE_UNUSED)
{
- segmented_mode = 0;
- machine = bfd_mach_z8002;
- coff_flags = F_Z8002;
+ frag_align (1, 0, 0);
+ record_alignment (now_seg, 1);
}
-const pseudo_typeS md_pseudo_table[] =
-{
-{ "int", cons, 2 },
-{ "data.b", cons, 1 },
-{ "data.w", cons, 2 },
-{ "data.l", cons, 4 },
-{ "form", listing_psize, 0 },
-{ "heading", listing_title, 0},
-{ "import", s_ignore, 0},
-{ "page", listing_eject, 0},
-{ "program", s_ignore, 0},
-{ "SEGM", s_segm, 0},
-{ "UNSEG", s_unseg, 0},
-{ 0,0,0 }
-};
+static int
+tohex (int c)
+{
+ if (ISDIGIT (c))
+ return c - '0';
+ if (ISLOWER (c))
+ return c - 'a' + 10;
+ return c - 'A' + 10;
+}
-const char EXP_CHARS[] = "eE";
+static void
+sval (int ignore ATTRIBUTE_UNUSED)
+{
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '\'')
+ {
+ int c;
+ input_line_pointer++;
+ c = *input_line_pointer++;
+ while (c != '\'')
+ {
+ if (c == '%')
+ {
+ c = (tohex (input_line_pointer[0]) << 4)
+ | tohex (input_line_pointer[1]);
+ input_line_pointer += 2;
+ }
+ FRAG_APPEND_1_CHAR (c);
+ c = *input_line_pointer++;
+ }
+ demand_empty_rest_of_line ();
+ }
+}
-/* Chars that mean this number is a floating point constant */
-/* As in 0f12.456 */
-/* or 0d1.2345e12 */
-char FLT_CHARS[] = "rRsSfFdDxXpP";
+/* This table describes all the machine specific pseudo-ops the assembler
+ has to support. The fields are:
+ pseudo-op name without dot
+ function to call to execute this pseudo-op
+ Integer arg to pass to the function
+ */
+const pseudo_typeS md_pseudo_table[] = {
+ {"int" , cons , 2},
+ {"data.b" , cons , 1},
+ {"data.w" , cons , 2},
+ {"data.l" , cons , 4},
+ {"form" , listing_psize , 0},
+ {"heading", listing_title , 0},
+ {"import" , s_ignore , 0},
+ {"page" , listing_eject , 0},
+ {"program", s_ignore , 0},
+ {"z8001" , s_segm , 1},
+ {"z8002" , s_segm , 0},
+
+ {"segm" , s_segm , 1},
+ {"unsegm" , s_segm , 0},
+ {"unseg" , s_segm , 0},
+ {"name" , s_app_file , 0},
+ {"global" , s_globl , 0},
+ {"wval" , cons , 2},
+ {"lval" , cons , 4},
+ {"bval" , cons , 1},
+ {"sval" , sval , 0},
+ {"rsect" , obj_coff_section, 0},
+ {"sect" , obj_coff_section, 0},
+ {"block" , s_space , 0},
+ {"even" , even , 0},
+ {0 , 0 , 0}
+};
-const relax_typeS md_relax_table[1];
+const char EXP_CHARS[] = "eE";
+/* Chars that mean this number is a floating point constant.
+ As in 0f12.456
+ or 0d1.2345e12 */
+const char FLT_CHARS[] = "rRsSfFdDxXpP";
-static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
+/* Opcode mnemonics. */
+static struct hash_control *opcode_hash_control;
+void
+md_begin (void)
+{
+ const opcode_entry_type *opcode;
+ int idx = -1;
+ opcode_hash_control = hash_new ();
-void md_begin ()
-{
- opcode_entry_type *opcode;
- char *prev_name= "";
- int idx = 0;
-
- opcode_hash_control = hash_new();
+ for (opcode = z8k_table; opcode->name; opcode++)
+ {
+ /* Only enter unique codes into the table. */
+ if (idx != opcode->idx)
+ hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
+ idx = opcode->idx;
+ }
-
- for (opcode = z8k_table; opcode->name; opcode++)
- {
- /* Only enter unique codes into the table */
- char *src= opcode->name;
+ /* Default to z8002. */
+ if (! z8k_target_from_cmdline)
+ s_segm (0);
- if (strcmp(opcode->name, prev_name))
+ /* Insert the pseudo ops, too. */
+ for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
{
- hash_insert(opcode_hash_control, opcode->name, (char *)opcode);
- idx++;
+ opcode_entry_type *fake_opcode;
+ fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
+ fake_opcode->name = md_pseudo_table[idx].poc_name;
+ fake_opcode->func = (void *) (md_pseudo_table + idx);
+ fake_opcode->opcode = 250;
+ hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
}
- opcode->idx = idx;
- prev_name = opcode->name;
- }
-
}
+typedef struct z8k_op {
+ /* CLASS_REG_xxx. */
+ int regsize;
-struct z8k_exp {
- char *e_beg;
- char *e_end;
- expressionS e_exp;
-};
-typedef struct z8k_op
-{
- char regsize; /* 'b','w','r','q' */
- unsigned int reg; /* 0..15 */
+ /* 0 .. 15. */
+ unsigned int reg;
int mode;
- unsigned int x_reg;/* any other register associated with the mode */
- expressionS exp; /* any expression */
-} op_type;
-
+ /* Any other register associated with the mode. */
+ unsigned int x_reg;
+ /* Any expression. */
+ expressionS exp;
+} op_type;
-static op_type *da_address;
-static op_type *imm_operand;
+static expressionS *da_operand;
+static expressionS *imm_operand;
-int the_cc;
+static int reg[16];
+static int the_cc;
+static int the_ctrl;
+static int the_flags;
+static int the_interrupt;
-char *
-DEFUN(whatreg,(reg, src),
- int *reg AND
- char *src)
+static char *
+whatreg (int *reg, char *src)
{
- if (isdigit(src[1]))
- {
- *reg = (src[0] - '0') * 10 +src[1] - '0';
- return src+2;
- }
+ if (ISDIGIT (src[1]))
+ {
+ *reg = (src[0] - '0') * 10 + src[1] - '0';
+ return src + 2;
+ }
else
- {
- *reg = (src[0] - '0');
- return src+1;
- }
-return 0;
+ {
+ *reg = (src[0] - '0');
+ return src + 1;
+ }
}
-/*
- parse operands
-
- rh0-rh7, rl0-rl7
- r0-r15
- rr0-rr14
- rq0--rq12
- WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
- r0l,r0h,..r7l,r7h
- @WREG
- @WREG+
- @-WREG
- #const
-
- */
-
-
-/* try and parse a reg name, returns number of chars consumed */
-char*
-DEFUN(parse_reg,(src, mode, reg),
- char *src AND
- int * mode AND
- unsigned int *reg)
+/* Parse operands
+
+ rh0-rh7, rl0-rl7
+ r0-r15
+ rr0-rr14
+ rq0--rq12
+ WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
+ r0l,r0h,..r7l,r7h
+ @WREG
+ @WREG+
+ @-WREG
+ #const
+*/
+
+/* Try to parse a reg name. Return a pointer to the first character
+ in SRC after the reg name. */
+
+static char *
+parse_reg (char *src, int *mode, unsigned int *reg)
{
char *res = 0;
- if (src[0] == 'R')
- {
- if (src[1] == 'R')
- {
- *mode = CLASS_REG_LONG;
- res = whatreg(reg, src+2);
- }
- else if (src[1] == 'H')
- {
- *mode = CLASS_REG_BYTE;
- res = whatreg(reg, src+2);
- }
- else if (src[1] == 'L')
- {
- *mode = CLASS_REG_BYTE;
- res = whatreg(reg, src+2);
- }
- else if (src[1] == 'Q')
+ char regno;
+
+ /* Check for stack pointer "sp" alias. */
+ if ((src[0] == 's' || src[0] == 'S')
+ && (src[1] == 'p' || src[1] == 'P')
+ && (src[2] == 0 || src[2] == ','))
{
- * mode = CLASS_REG_QUAD;
- res = whatreg(reg, src+2);
+ if (segmented_mode)
+ {
+ *mode = CLASS_REG_LONG;
+ *reg = 14;
+ }
+ else
+ {
+ *mode = CLASS_REG_WORD;
+ *reg = 15;
+ }
+ return src + 2;
}
- else
+
+ if (src[0] == 'r' || src[0] == 'R')
{
- *mode = CLASS_REG_WORD;
- res = whatreg(reg, src+1);
+ 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'. */
+ *mode = CLASS_REG_LONG;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 14)
+ as_bad (_("register rr%d out of range"), regno);
+ if (regno & 1)
+ as_bad (_("register rr%d does not exist"), 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'. */
+ *mode = CLASS_REG_BYTE;
+ res = whatreg (reg, src + 2);
+ 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'. */
+ *mode = CLASS_REG_BYTE;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 7)
+ as_bad (_("register rl%d out of range"), regno);
+ *reg += 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'. */
+ *mode = CLASS_REG_QUAD;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 12)
+ as_bad (_("register rq%d out of range"), regno);
+ if (regno & 3)
+ as_bad (_("register rq%d does not exist"), regno);
+ }
+ else
+ {
+ if (src[1] < '0' || src[1] > '9')
+ return res; /* Assume no register name but a label starting with 'r'. */
+ *mode = CLASS_REG_WORD;
+ res = whatreg (reg, src + 1);
+ regno = *reg;
+ if (regno > 15)
+ as_bad (_("register r%d out of range"), regno);
+ }
}
- }
return res;
-
-
}
-char *
-DEFUN(parse_exp,(s, op),
- char *s AND
- expressionS *op)
+static char *
+parse_exp (char *s, expressionS *op)
{
- char *save = input_line_pointer;
- char *new;
- segT seg;
- input_line_pointer = s;
- seg = expr(0,op);
- new = input_line_pointer;
- input_line_pointer = save;
- if (SEG_NORMAL(seg))
- return new;
- switch (seg) {
- case SEG_ABSOLUTE:
- case SEG_UNKNOWN:
- case SEG_DIFFERENCE:
- case SEG_BIG:
- case SEG_REGISTER:
- return new;
- case SEG_ABSENT:
- as_bad("Missing operand");
- return new;
- default:
- as_bad("Don't understand operand of type %s", segment_name (seg));
- return new;
- }
+ char *save = input_line_pointer;
+ char *new;
+
+ input_line_pointer = s;
+ expression (op);
+ if (op->X_op == O_absent)
+ as_bad (_("missing operand"));
+ new = input_line_pointer;
+ input_line_pointer = save;
+ return new;
}
-
/* The many forms of operand:
-
+
<rb>
<r>
<rr>
<rq>
@r
- #exp
+ #exp
exp
exp(r)
r(#exp)
r(r)
-
-
-
*/
-static
-char *
-DEFUN(checkfor,(ptr, what),
- char *ptr AND
- char what)
+static char *
+checkfor (char *ptr, char what)
{
-if (*ptr == what) ptr++;
-else {
-as_bad("expected %c", what);
-}
-return ptr;
+ if (*ptr == what)
+ ptr++;
+ else
+ as_bad (_("expected %c"), what);
+
+ return ptr;
}
-/* Make sure the mode supplied is the size of a word */
-static void
-DEFUN(regword,(mode, string),
- int mode AND
- char *string)
+/* Make sure the mode supplied is the size of a word. */
+
+static void
+regword (int mode, char *string)
{
int ok;
+
ok = CLASS_REG_WORD;
- if (ok != mode)
- {
- as_bad("register is wrong size for a word %s", string);
- }
+ if (ok != mode)
+ {
+ as_bad (_("register is wrong size for a word %s"), string);
+ }
}
-/* Make sure the mode supplied is the size of an address */
-static void
-DEFUN(regaddr,(mode, string),
- int mode AND
- char *string)
+/* Make sure the mode supplied is the size of an address. */
+
+static void
+regaddr (int mode, char *string)
{
int ok;
+
ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
- if (ok != mode)
- {
- as_bad("register is wrong size for address %s", string);
- }
+ if (ok != mode)
+ {
+ as_bad (_("register is wrong size for address %s"), string);
+ }
}
-struct cc_names {
-int value;
-char *name;
-
+struct ctrl_names {
+ int value;
+ char *name;
+};
+static struct ctrl_names ctrl_table[] = {
+ { 0x1, "flags" }, /* ldctlb only. */
+ { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */
+ { 0x3, "refresh" },
+ { 0x4, "psapseg" },
+ { 0x5, "psapoff" },
+ { 0x5, "psap" },
+ { 0x6, "nspseg" },
+ { 0x7, "nspoff" },
+ { 0x7, "nsp" },
+ { 0 , 0 }
};
-struct cc_names table[] =
+static void
+get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
- 0x0,"F",
- 0x6,"Z",
- 0xe,"NZ",
- 0x7,"C",
- 0xf,"NC",
- 0xd,"PL",
- 0x5,"MI",
- 0xe,"NE",
- 0x6,"EQ",
- 0x4,"OV",
- 0xc,"NOV",
- 0x4,"PE",
- 0xC,"PO",
- 0x9,"GE",
- 0x1,"LT",
- 0xa,"GT",
- 0x2,"LE",
- 0xf,"UGE",
- 0x7,"ULT",
- 0xb,"UGT",
- 0x3,"ULE",
- 0,0
- };
+ char *src = *ptr;
+ int i, l;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_CTRL;
+ for (i = 0; ctrl_table[i].name; i++)
+ {
+ l = strlen (ctrl_table[i].name);
+ if (! strncasecmp (ctrl_table[i].name, src, l))
+ {
+ the_ctrl = ctrl_table[i].value;
+ if (*(src + l) && *(src + l) != ',')
+ break;
+ *ptr = src + l; /* Valid control name found: "consume" it. */
+ return;
+ }
+ }
+ the_ctrl = 0;
+}
+
+struct flag_names {
+ int value;
+ char *name;
+};
+
+static struct flag_names flag_table[] = {
+ { 0x1, "P" },
+ { 0x1, "V" },
+ { 0x2, "S" },
+ { 0x4, "Z" },
+ { 0x8, "C" },
+ { 0x0, "+" },
+ { 0x0, "," },
+ { 0, 0 }
+};
static void
-DEFUN(get_cc_operand,(ptr, mode, dst),
- char **ptr AND
- struct z8k_op *mode AND
- unsigned int dst)
+get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
char *src = *ptr;
- int r;
+ char c;
int i;
+ int j;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_FLAGS;
+ the_flags = 0;
+ for (j = 0; j <= 9; j++)
+ {
+ if (!src[j])
+ goto done;
+ c = TOUPPER(src[j]);
+ for (i = 0; flag_table[i].name; i++)
+ {
+ if (flag_table[i].name[0] == c)
+ {
+ the_flags = the_flags | flag_table[i].value;
+ goto match;
+ }
+ }
+ goto done;
+ match:
+ ;
+ }
+ done:
+ *ptr = src + j;
+}
+
+struct interrupt_names {
+ int value;
+ char *name;
+};
+
+static struct interrupt_names intr_table[] = {
+ { 0x1, "nvi" },
+ { 0x2, "vi" },
+ { 0x3, "both" },
+ { 0x3, "all" },
+ { 0, 0 }
+};
+
+static void
+get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
+{
+ char *src = *ptr;
+ int i, l;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_IMM;
+ the_interrupt = 0;
+
+ while (*src)
+ {
+ for (i = 0; intr_table[i].name; i++)
+ {
+ l = strlen (intr_table[i].name);
+ if (! strncasecmp (intr_table[i].name, src, l))
+ {
+ the_interrupt |= intr_table[i].value;
+ if (*(src + l) && *(src + l) != ',')
+ {
+ *ptr = src + l;
+ invalid:
+ as_bad (_("unknown interrupt %s"), src);
+ while (**ptr && ! is_end_of_line[(unsigned char) **ptr])
+ (*ptr)++; /* Consume rest of line. */
+ return;
+ }
+ src += l;
+ if (! *src)
+ {
+ *ptr = src;
+ return;
+ }
+ }
+ }
+ if (*src == ',')
+ src++;
+ else
+ {
+ *ptr = src;
+ goto invalid;
+ }
+ }
+
+ /* No interrupt type specified, opcode won't do anything. */
+ as_warn (_("opcode has no effect"));
+ the_interrupt = 0x0;
+}
+
+struct cc_names {
+ int value;
+ char *name;
+};
+
+static struct cc_names table[] = {
+ { 0x0, "f" },
+ { 0x1, "lt" },
+ { 0x2, "le" },
+ { 0x3, "ule" },
+ { 0x4, "ov/pe" },
+ { 0x4, "ov" },
+ { 0x4, "pe/ov" },
+ { 0x4, "pe" },
+ { 0x5, "mi" },
+ { 0x6, "eq" },
+ { 0x6, "z" },
+ { 0x7, "c/ult" },
+ { 0x7, "c" },
+ { 0x7, "ult/c" },
+ { 0x7, "ult" },
+ { 0x8, "t" },
+ { 0x9, "ge" },
+ { 0xa, "gt" },
+ { 0xb, "ugt" },
+ { 0xc, "nov/po" },
+ { 0xc, "nov" },
+ { 0xc, "po/nov" },
+ { 0xc, "po" },
+ { 0xd, "pl" },
+ { 0xe, "ne" },
+ { 0xe, "nz" },
+ { 0xf, "nc/uge" },
+ { 0xf, "nc" },
+ { 0xf, "uge/nc" },
+ { 0xf, "uge" },
+ { 0 , 0 }
+};
+
+static void
+get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
+{
+ char *src = *ptr;
+ int i, l;
+
+ while (*src == ' ')
+ src++;
+
mode->mode = CLASS_CC;
for (i = 0; table[i].name; i++)
- {
- int j;
- for (j = 0; table[i].name[j]; j++)
{
- if (table[i].name[j] != src[j])
- goto fail;
+ l = strlen (table[i].name);
+ if (! strncasecmp (table[i].name, src, l))
+ {
+ the_cc = table[i].value;
+ if (*(src + l) && *(src + l) != ',')
+ break;
+ *ptr = src + l; /* Valid cc found: "consume" it. */
+ return;
+ }
}
- the_cc = table[i].value;
- *ptr = src + j;
- return;
- fail:;
- }
-the_cc = 0x8;
- return ;
+ the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
}
-static void
-DEFUN(get_operand,(ptr, mode, dst),
- char **ptr AND
- struct z8k_op *mode AND
- unsigned int dst)
+static void
+get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
char *src = *ptr;
char *end;
- unsigned int num;
- unsigned int len;
- unsigned int size;
- mode->mode = 0;
- if (*src == '#')
- {
- mode->mode = CLASS_IMM;
- imm_operand = mode;
- src = parse_exp(src+1, &(mode->exp));
- }
- else if (*src == '@') {
- int d;
- mode->mode = CLASS_IR;
- src= parse_reg(src+1, &d, &mode->reg);
- }
- else
- {
- int reg;
- end = parse_reg(src, &mode->mode, ®);
+ mode->mode = 0;
- if (end)
+ while (*src == ' ')
+ src++;
+ if (*src == '#')
{
- int nw, nr;
- src = end;
- if (*src == '(')
- {
- src++;
- end = parse_reg(src, &nw, &nr);
- if (end)
+ mode->mode = CLASS_IMM;
+ imm_operand = &(mode->exp);
+ src = parse_exp (src + 1, &(mode->exp));
+ }
+ else if (*src == '@')
+ {
+ mode->mode = CLASS_IR;
+ src = parse_reg (src + 1, &mode->regsize, &mode->reg);
+ }
+ else
+ {
+ int regn;
+
+ end = parse_reg (src, &mode->mode, ®n);
+
+ if (end)
{
- /* Got Ra(Rb) */
- src = end;
+ int nw, nr;
- if (*src != ')')
- {
- as_bad("Missing ) in ra(rb)");
- }
+ src = end;
+ if (*src == '(')
+ {
+ src++;
+ end = parse_reg (src, &nw, &nr);
+ if (end)
+ {
+ /* Got Ra(Rb). */
+ src = end;
+
+ if (*src != ')')
+ as_bad (_("Missing ) in ra(rb)"));
+ else
+ src++;
+
+ regaddr (mode->mode, "ra(rb) ra");
+#if 0
+ regword (mode->mode, "ra(rb) rb");
+#endif
+ mode->mode = CLASS_BX;
+ mode->reg = regn;
+ mode->x_reg = nr;
+ reg[ARG_RX] = nr;
+ }
+ else
+ {
+ /* Got Ra(disp). */
+ if (*src == '#')
+ src++;
+ src = parse_exp (src, &(mode->exp));
+ src = checkfor (src, ')');
+ mode->mode = CLASS_BA;
+ mode->reg = regn;
+ mode->x_reg = 0;
+ imm_operand = &(mode->exp);
+ }
+ }
else
- {
- src++;
- }
-
- regaddr(mode->mode,"ra(rb) ra");
- regword(mode->mode,"ra(rb) rb");
- mode->mode = CLASS_BX;
- mode->reg = reg;
- mode->x_reg = nr;
-
+ {
+ mode->reg = regn;
+ mode->x_reg = 0;
+ }
}
- else
+ else
{
- /* Got Ra(disp) */
- if (*src == '#')
- src++;
- src = parse_exp(src, &(mode->exp));
- src = checkfor(src, ')');
- mode->mode = CLASS_BA;
- mode->reg = reg;
- mode->x_reg = 0;
+ /* No initial reg. */
+ src = parse_exp (src, &(mode->exp));
+ if (*src == '(')
+ {
+ src++;
+ end = parse_reg (src, &(mode->mode), ®n);
+ regword (mode->mode, "addr(Ra) ra");
+ mode->mode = CLASS_X;
+ mode->reg = regn;
+ mode->x_reg = 0;
+ da_operand = &(mode->exp);
+ src = checkfor (end, ')');
+ }
+ else
+ {
+ /* Just an address. */
+ mode->mode = CLASS_DA;
+ mode->reg = 0;
+ mode->x_reg = 0;
+ da_operand = &(mode->exp);
+ }
}
- }
- else
- {
- mode->reg = reg;
- mode->x_reg = 0;
- }
- }
- else
- {
- /* No initial reg */
- src = parse_exp(src, &(mode->exp));
- if (*src == '(')
- {
- src++;
- end = parse_reg(src, &(mode->mode), ®);
- regword(mode->mode,"addr(Ra) ra");
- mode->mode = CLASS_X;
- mode->reg = reg;
- mode->x_reg =0;
- da_address = mode;
- src = checkfor(end, ')');
- }
- else
- {
- /* Just an address */
- mode->mode = CLASS_DA;
- mode->reg = 0;
- mode->x_reg = 0;
- da_address = mode;
- }
}
- }
*ptr = src;
}
-static
-char *
-DEFUN(get_operands,(opcode, op_end, operand),
- opcode_entry_type *opcode AND
- char *op_end AND
- op_type *operand)
+static char *
+get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand)
{
char *ptr = op_end;
- switch (opcode->noperands)
- {
- case 0:
- operand[0].mode = 0;
- operand[1].mode = 0;
- break;
-
- case 1:
- ptr++;
- get_operand(& ptr, operand +0,0);
- operand[1].mode =0;
- break;
-
- case 2:
- ptr++;
- if (opcode->arg_info[0] == CLASS_CC)
- {
- get_cc_operand(&ptr, operand+0,0);
- }
- else
+ char *savptr;
+
+ switch (opcode->noperands)
{
- get_operand(& ptr, operand +0,0);
+ case 0:
+ operand[0].mode = 0;
+ operand[1].mode = 0;
+ while (*ptr == ' ')
+ ptr++;
+ break;
+
+ case 1:
+ if (opcode->arg_info[0] == CLASS_CC)
+ {
+ get_cc_operand (&ptr, operand + 0, 0);
+ while (*ptr == ' ')
+ ptr++;
+ if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ {
+ as_bad (_("invalid condition code '%s'"), ptr);
+ while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ ptr++; /* Consume rest of line. */
+ }
+ }
+ else if (opcode->arg_info[0] == CLASS_FLAGS)
+ {
+ get_flags_operand (&ptr, operand + 0, 0);
+ while (*ptr == ' ')
+ ptr++;
+ if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ {
+ as_bad (_("invalid flag '%s'"), ptr);
+ while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ ptr++; /* Consume rest of line. */
+ }
+ }
+ else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
+ get_interrupt_operand (&ptr, operand + 0, 0);
+ else
+ get_operand (&ptr, operand + 0, 0);
+
+ operand[1].mode = 0;
+ break;
+
+ case 2:
+ savptr = ptr;
+ if (opcode->arg_info[0] == CLASS_CC)
+ {
+ get_cc_operand (&ptr, operand + 0, 0);
+ while (*ptr == ' ')
+ ptr++;
+ if (*ptr != ',' && strchr (ptr + 1, ','))
+ {
+ savptr = ptr;
+ while (*ptr != ',')
+ ptr++;
+ *ptr = 0;
+ ptr++;
+ as_bad (_("invalid condition code '%s'"), savptr);
+ }
+ }
+ else if (opcode->arg_info[0] == CLASS_CTRL)
+ {
+ get_ctrl_operand (&ptr, operand + 0, 0);
+
+ if (the_ctrl == 0)
+ {
+ ptr = savptr;
+ get_operand (&ptr, operand + 0, 0);
+
+ if (ptr == 0)
+ return NULL;
+ if (*ptr == ',')
+ ptr++;
+ get_ctrl_operand (&ptr, operand + 1, 1);
+ if (the_ctrl == 0)
+ return NULL;
+ return ptr;
+ }
+ }
+ else
+ get_operand (&ptr, operand + 0, 0);
+
+ if (ptr == 0)
+ return NULL;
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, 1);
+ break;
+
+ case 3:
+ get_operand (&ptr, operand + 0, 0);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, 1);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 2, 2);
+ break;
+
+ case 4:
+ get_operand (&ptr, operand + 0, 0);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, 1);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 2, 2);
+ if (*ptr == ',')
+ ptr++;
+ get_cc_operand (&ptr, operand + 3, 3);
+ break;
+
+ default:
+ abort ();
}
- if (*ptr == ',') ptr++;
- get_operand(& ptr, operand +1, 1);
- break;
-
- default:
- abort();
- }
-
-
- return ptr;
+
+ return ptr;
}
/* Passed a pointer to a list of opcodes which use different
- addressing modes, return the opcode which matches the opcodes
- provided
- */
-
-int reg[16];
-expressionS disp;
-
-static
-opcode_entry_type *
-DEFUN(get_specific,(opcode, operands),
- opcode_entry_type *opcode AND
- op_type *operands)
+ addressing modes. Return the opcode which matches the opcodes
+ provided. */
+static opcode_entry_type *
+get_specific (opcode_entry_type *opcode, op_type *operands)
{
- opcode_entry_type *this_try = opcode ;
+ opcode_entry_type *this_try = opcode;
int found = 0;
unsigned int noperands = opcode->noperands;
-
- unsigned int dispreg;
- unsigned int this_index = opcode->idx;
- while (this_index == opcode->idx && !found)
- {
- unsigned int i;
-
- this_try = opcode ++;
- for (i = 0; i < noperands; i++)
+ int this_index = opcode->idx;
+
+ while (this_index == opcode->idx && !found)
{
- int mode = operands[i].mode;
+ unsigned int i;
- if ((mode&CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) goto fail;
+ this_try = opcode++;
+ for (i = 0; i < noperands; i++)
+ {
+ unsigned int mode = operands[i].mode;
+
+ if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO))
+ {
+ mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO;
+ }
+
+ if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
+ {
+ /* It could be a pc rel operand, if this is a da mode
+ and we like disps, then insert it. */
+
+ if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
+ {
+ /* This is the case. */
+ operands[i].mode = CLASS_DISP;
+ }
+ else if (mode == CLASS_BA && this_try->arg_info[i])
+ {
+ /* Can't think of a way to turn what we've been
+ given into something that's OK. */
+ goto fail;
+ }
+ else if (this_try->arg_info[i] & CLASS_PR)
+ {
+ if (mode == CLASS_REG_LONG && segmented_mode)
+ {
+ /* OK. */
+ }
+ else if (mode == CLASS_REG_WORD && !segmented_mode)
+ {
+ /* OK. */
+ }
+ else
+ goto fail;
+ }
+ else
+ goto fail;
+ }
+ switch (mode & CLASS_MASK)
+ {
+ default:
+ break;
+ case CLASS_IRO:
+ if (operands[i].regsize != CLASS_REG_WORD)
+ as_bad (_("invalid indirect register size"));
+ reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+ break;
+ case CLASS_IR:
+ if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG)
+ || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD))
+ as_bad (_("invalid indirect register size"));
+ reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+ break;
+ case CLASS_X:
+ case CLASS_BA:
+ case CLASS_BX:
+ case CLASS_DISP:
+ case CLASS_REG:
+ case CLASS_REG_WORD:
+ case CLASS_REG_BYTE:
+ case CLASS_REG_QUAD:
+ case CLASS_REG_LONG:
+ case CLASS_REGN0:
+ reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+ break;
+ case CLASS_CTRL:
+ if (this_try->opcode == OPC_ldctlb && the_ctrl != 1)
+ as_bad (_("invalid control register name"));
+ break;
+ }
+ }
- reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+ found = 1;
+ fail:
+ ;
}
-
- found =1;
- fail: ;
- }
- if (found)
- return this_try;
- else
- return 0;
+ if (found)
+ return this_try;
+ else
+ return 0;
}
+static char buffer[20];
+
static void
-DEFUN(check_operand,(operand, width, string),
- struct z8k_op *operand AND
- unsigned int width AND
- char *string)
+newfix (int ptr, int type, int size, expressionS *operand)
{
- if (operand->exp.X_add_symbol == 0
- && operand->exp.X_subtract_symbol == 0)
- {
-
- /* No symbol involved, let's look at offset, it's dangerous if any of
- the high bits are not 0 or ff's, find out by oring or anding with
- the width and seeing if the answer is 0 or all fs*/
- if ((operand->exp.X_add_number & ~width) != 0 &&
- (operand->exp.X_add_number | width)!= (~0))
+ int is_pcrel = 0;
+
+ /* size is in nibbles. */
+
+ if (operand->X_add_symbol
+ || operand->X_op_symbol
+ || operand->X_add_number)
{
- as_warn("operand %s0x%x out of range.", string, operand->exp.X_add_number);
+ switch(type)
+ {
+ case R_JR:
+ case R_DISP7:
+ case R_CALLR:
+ is_pcrel = 1;
+ }
+ fix_new_exp (frag_now,
+ ptr,
+ size / 2,
+ operand,
+ is_pcrel,
+ type);
}
- }
-
}
-static void
-DEFUN(newfix,(ptr, type, operand),
- int ptr AND
- int type AND
- op_type *operand)
+static char *
+apply_fix (char *ptr, int type, expressionS *operand, int size)
{
+ long n = operand->X_add_number;
- fix_new(frag_now,
- ptr,
- 1,
- operand->exp.X_add_symbol,
- operand->exp.X_subtract_symbol,
- operand->exp.X_add_number,
- 0,
- type);
+ /* size is in nibbles. */
+
+ newfix ((ptr - buffer) / 2, type, size + 1, operand);
+ switch (size)
+ {
+ case 8: /* 8 nibbles == 32 bits. */
+ *ptr++ = n >> 28;
+ *ptr++ = n >> 24;
+ *ptr++ = n >> 20;
+ *ptr++ = n >> 16;
+ case 4: /* 4 nibbles == 16 bits. */
+ *ptr++ = n >> 12;
+ *ptr++ = n >> 8;
+ case 2:
+ *ptr++ = n >> 4;
+ case 1:
+ *ptr++ = n >> 0;
+ break;
+ }
+ return ptr;
}
+/* Now we know what sort of opcodes it is. Let's build the bytes. */
+
+#define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
-/* Now we know what sort of opcodes it is, lets build the bytes -
- */
-static void
- DEFUN (build_bytes,(this_try, operand),
- opcode_entry_type *this_try AND
- struct z8k_op *operand)
+static void
+build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED)
{
- unsigned int i;
- char buffer[20];
- int length;
- char *output;
char *output_ptr = buffer;
- char part;
int c;
- char high;
- int nib;
int nibble;
- unsigned short *class_ptr;
- length = this_try->length;
- if (segmented_mode && da_address)
- {
- /* two more bytes when in segmented mode and using da address
- mode */
- length += 2;
- }
- output = frag_more(length);
-memset(buffer, 20, 0);
- class_ptr = this_try->byte_info;
- top: ;
+ unsigned int *class_ptr;
- for (nibble = 0; c = *class_ptr++; nibble++)
- {
+ frag_wane (frag_now);
+ frag_new (0);
+
+ memset (buffer, 0, sizeof (buffer));
+ class_ptr = this_try->byte_info;
- switch (c & CLASS_MASK)
+ for (nibble = 0; (c = *class_ptr++); nibble++)
{
- default:
- abort();
- case CLASS_ADDRESS:
- /* Direct address, we don't cope with the SS mode right now */
- if (segmented_mode) {
- newfix((output_ptr-buffer)/2, R_DA | R_SEG, da_address);
- output_ptr += 8;
- }
- else {
- newfix((output_ptr-buffer)/2, R_DA, da_address);
- output_ptr += 4;
- }
- da_address = 0;
- break;
- case CLASS_CC:
- *output_ptr++ = the_cc;
- break;
- case CLASS_BIT:
- *output_ptr++ = c & 0xf;
- break;
- case CLASS_REGN0:
- if (reg[c&0xf] == 0)
- {
- as_bad("can't use R0 here");
- }
- case CLASS_REG:
- case CLASS_REG_BYTE:
- case CLASS_REG_WORD:
- case CLASS_REG_LONG:
- case CLASS_REG_QUAD:
- /* Insert bit mattern of
- right reg */
- *output_ptr++ = reg[c & 0xf];
- break;
- case CLASS_IMM:
- {
- nib = 0;
- switch (c & ARG_MASK)
- {
- case ARG_IMM4:
- newfix((output_ptr-buffer)/2, R_IMM4L, imm_operand);
- *output_ptr++ = 0;
- break;
-
- case ARG_IMM8:
- newfix((output_ptr-buffer)/2, R_IMM8, imm_operand);
- *output_ptr++ = 0;
- *output_ptr++ = 0;
-
- case ARG_IMM16:
- newfix((output_ptr-buffer)/2, R_IMM16, imm_operand);
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- break;
-
- case ARG_IMM32:
- newfix((output_ptr-buffer)/2, R_IMM32, imm_operand);
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- *output_ptr++ = 0;
-
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- *output_ptr++ = 0;
- *output_ptr++ = 0;
-
- break;
+ switch (c & CLASS_MASK)
+ {
default:
- abort();
-
-
- }
- }
+ abort ();
+
+ case CLASS_ADDRESS:
+ /* Direct address, we don't cope with the SS mode right now. */
+ if (segmented_mode)
+ {
+ /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
+ output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8);
+ }
+ else
+ {
+ output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
+ }
+ da_operand = 0;
+ break;
+ case CLASS_DISP8:
+ /* pc rel 8 bit */
+ output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2);
+ da_operand = 0;
+ break;
+
+ case CLASS_0DISP7:
+ /* pc rel 7 bit */
+ *output_ptr = 0;
+ output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
+ da_operand = 0;
+ break;
+
+ case CLASS_1DISP7:
+ /* pc rel 7 bit */
+ *output_ptr = 0x80;
+ output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
+ output_ptr[-2] = 0x8;
+ da_operand = 0;
+ break;
+
+ case CLASS_BIT_1OR2:
+ *output_ptr = c & 0xf;
+ if (imm_operand)
+ {
+ if (imm_operand->X_add_number == 2)
+ *output_ptr |= 2;
+ else if (imm_operand->X_add_number != 1)
+ as_bad (_("immediate must be 1 or 2"));
+ }
+ else
+ as_bad (_("immediate 1 or 2 expected"));
+ output_ptr++;
+ break;
+ case CLASS_CC:
+ *output_ptr++ = the_cc;
+ break;
+ case CLASS_0CCC:
+ if (the_ctrl < 2 || the_ctrl > 7)
+ as_bad (_("invalid control register name"));
+ *output_ptr++ = the_ctrl;
+ break;
+ case CLASS_1CCC:
+ if (the_ctrl < 2 || the_ctrl > 7)
+ as_bad (_("invalid control register name"));
+ *output_ptr++ = the_ctrl | 0x8;
+ break;
+ case CLASS_00II:
+ *output_ptr++ = (~the_interrupt & 0x3);
+ break;
+ case CLASS_01II:
+ *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
+ break;
+ case CLASS_FLAGS:
+ *output_ptr++ = the_flags;
+ break;
+ case CLASS_IGNORE:
+ case CLASS_BIT:
+ *output_ptr++ = c & 0xf;
+ break;
+ case CLASS_REGN0:
+ if (reg[c & 0xf] == 0)
+ as_bad (_("can't use R0 here"));
+ /* Fall through. */
+ case CLASS_REG:
+ case CLASS_REG_BYTE:
+ case CLASS_REG_WORD:
+ case CLASS_REG_LONG:
+ case CLASS_REG_QUAD:
+ /* Insert bit mattern of right reg. */
+ *output_ptr++ = reg[c & 0xf];
+ break;
+ case CLASS_DISP:
+ switch (c & ARG_MASK)
+ {
+ case ARG_DISP12:
+ output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4);
+ break;
+ case ARG_DISP16:
+ output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4);
+ break;
+ default:
+ output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
+ }
+ da_operand = 0;
+ break;
+
+ case CLASS_IMM:
+ {
+ switch (c & ARG_MASK)
+ {
+ case ARG_NIM4:
+ if (imm_operand->X_add_number > 15)
+ {
+ as_bad (_("immediate value out of range"));
+ }
+ imm_operand->X_add_number = -imm_operand->X_add_number;
+ output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
+ break;
+ /*case ARG_IMMNMINUS1: not used. */
+ case ARG_IMM4M1:
+ imm_operand->X_add_number--;
+ /* Drop through. */
+ case ARG_IMM4:
+ if (imm_operand->X_add_number > 15)
+ {
+ as_bad (_("immediate value out of range"));
+ }
+ output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
+ break;
+ case ARG_NIM8:
+ imm_operand->X_add_number = -imm_operand->X_add_number;
+ /* Drop through. */
+ case ARG_IMM8:
+ output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
+ break;
+ case ARG_IMM16:
+ output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
+ break;
+ case ARG_IMM32:
+ output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
+ break;
+ default:
+ abort ();
+ }
+ }
+ }
}
- }
-
- /* Copy from the nibble buffer into the frag */
-
- {
- char *src = buffer;
- char *fragp = output;
- while (src < output_ptr)
- {
- *fragp = (src[0] << 4) | src[1];
- src+=2;
- fragp++;
- }
-
- }
+ /* Copy from the nibble buffer into the frag. */
+ {
+ int length = (output_ptr - buffer) / 2;
+ char *src = buffer;
+ char *fragp = frag_more (length);
+ while (src < output_ptr)
+ {
+ *fragp = (src[0] << 4) | src[1];
+ src += 2;
+ fragp++;
+ }
+ }
}
/* This is the guts of the machine-dependent assembler. STR points to a
- machine dependent instruction. This funciton is supposed to emit
- the frags/bytes it assembles to.
- */
-
-
+ machine dependent instruction. This function is supposed to emit
+ the frags/bytes it assembles to. */
-void
- DEFUN(md_assemble,(str),
- char *str)
+void
+md_assemble (char *str)
{
+ char c;
char *op_start;
char *op_end;
- unsigned int i;
- struct z8k_op operand[2];
+ struct z8k_op operand[3];
opcode_entry_type *opcode;
- opcode_entry_type * prev_opcode;
-
- char *dot = 0;
- char c;
- /* Drop leading whitespace */
+
+ /* Drop leading whitespace. */
while (*str == ' ')
- str++;
-
- /* find the op code end */
+ str++;
+
+ /* Find the op code end. */
for (op_start = op_end = str;
- *op_end != 0 && *op_end != ' ';
- op_end ++)
- {
- }
-
- ;
-
- if (op_end == op_start)
- {
- as_bad("can't find opcode ");
- }
+ *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end];
+ op_end++)
+ ;
+
+ if (op_end == op_start)
+ {
+ as_bad (_("can't find opcode "));
+ }
c = *op_end;
-
- *op_end = 0;
-
- opcode = (opcode_entry_type *) hash_find(opcode_hash_control,
- op_start);
-
- if (opcode == NULL)
- {
- as_bad("unknown opcode");
- return;
- }
-
-
- input_line_pointer = get_operands(opcode, op_end,
- operand);
- *op_end = c;
- prev_opcode = opcode;
-
- opcode = get_specific(opcode, operand);
-
- if (opcode == 0)
- {
- /* Couldn't find an opcode which matched the operands */
- char *where =frag_more(2);
- where[0] = 0x0;
- where[1] = 0x0;
- as_bad("Can't find opcode to match operands");
- return;
- }
-
- build_bytes(opcode, operand);
-}
+ *op_end = 0; /* Zero-terminate op code string for hash_find() call. */
+ opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
-void
- DEFUN(tc_crawl_symbol_chain, (headers),
- object_headers *headers)
-{
- printf("call to tc_crawl_symbol_chain \n");
+ if (opcode == NULL)
+ {
+ as_bad (_("unknown opcode"));
+ return;
+ }
+
+ *op_end = c; /* Restore original string. */
+
+ if (opcode->opcode == 250)
+ {
+ pseudo_typeS *p;
+ char oc;
+ char *old = input_line_pointer;
+
+ /* Was really a pseudo op. */
+
+ input_line_pointer = op_end;
+
+ oc = *old;
+ *old = '\n';
+ while (*input_line_pointer == ' ')
+ input_line_pointer++;
+ p = (pseudo_typeS *) (opcode->func);
+
+ (p->poc_handler) (p->poc_val);
+ input_line_pointer = old;
+ *old = oc;
+ }
+ else
+ {
+ char *new_input_line_pointer;
+
+ new_input_line_pointer = get_operands (opcode, op_end, operand);
+ if (new_input_line_pointer)
+ input_line_pointer = new_input_line_pointer;
+
+ opcode = get_specific (opcode, operand);
+
+ if (opcode == 0)
+ {
+ /* Couldn't find an opcode which matched the operands. */
+ char *where = frag_more (2);
+
+ where[0] = 0x0;
+ where[1] = 0x0;
+
+ as_bad (_("Can't find opcode to match operands"));
+ return;
+ }
+
+ build_bytes (opcode, operand);
+ }
}
-symbolS *DEFUN(md_undefined_symbol,(name),
- char *name)
+void
+tc_crawl_symbol_chain (object_headers *headers ATTRIBUTE_UNUSED)
{
- return 0;
+ printf (_("call to tc_crawl_symbol_chain \n"));
}
-void
- DEFUN(tc_headers_hook,(headers),
- object_headers *headers)
+/* We have no need to default values of symbols. */
+
+symbolS *
+md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
- printf("call to tc_headers_hook \n");
+ return 0;
}
+
void
- DEFUN_VOID(md_end)
+tc_headers_hook (object_headers *headers ATTRIBUTE_UNUSED)
{
+ printf (_("call to tc_headers_hook \n"));
}
-/* Various routines to kill one day */
-/* Equal to MAX_PRECISION in atof-ieee.c */
+/* 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.
- */
+/* 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(type,litP,sizeP)
-char type;
-char *litP;
-int *sizeP;
+md_atof (int type, char *litP, int *sizeP)
{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
- char *atof_ieee();
-
- 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 ""; /* Someone should teach Dean about null pointers */
-}
+ int prec;
+ LITTLENUM_TYPE words[MAX_LITTLENUMS];
+ LITTLENUM_TYPE *wordP;
+ char *t;
-int
- md_parse_option(argP, cntP, vecP)
-char **argP;
-int *cntP;
-char ***vecP;
+ switch (type)
+ {
+ case 'f':
+ case 'F':
+ case 's':
+ case 'S':
+ prec = 2;
+ break;
-{
- return 0;
-
+ 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;
}
+\f
+const char *md_shortopts = "z:";
-int md_short_jump_size;
+struct option md_longopts[] =
+ {
+#define OPTION_RELAX (OPTION_MD_BASE)
+ {"linkrelax", no_argument, NULL, OPTION_RELAX},
+ {NULL, no_argument, NULL, 0}
+ };
-void tc_aout_fix_to_chars () { printf("call to tc_aout_fix_to_chars \n");
- abort(); }
-void md_create_short_jump(ptr, from_addr, to_addr, frag, to_symbol)
-char *ptr;
-long from_addr;
-long to_addr;
-fragS *frag;
-symbolS *to_symbol;
+size_t md_longopts_size = sizeof (md_longopts);
+
+int
+md_parse_option (int c, char *arg)
{
- as_fatal("failed sanity check.");
+ switch (c)
+ {
+ case 'z':
+ if (!strcmp (arg, "8001"))
+ s_segm (1);
+ else if (!strcmp (arg, "8002"))
+ s_segm (0);
+ else
+ {
+ as_bad (_("invalid architecture -z%s"), arg);
+ return 0;
+ }
+ z8k_target_from_cmdline = 1;
+ break;
+
+ case OPTION_RELAX:
+ linkrelax = 1;
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
}
void
- md_create_long_jump(ptr,from_addr,to_addr,frag,to_symbol)
-char *ptr;
-long from_addr, to_addr;
-fragS *frag;
-symbolS *to_symbol;
+md_show_usage (FILE *stream)
{
- as_fatal("failed sanity check.");
+ fprintf (stream, _("\
+ Z8K options:\n\
+ -z8001 generate segmented code\n\
+ -z8002 generate unsegmented code\n\
+ -linkrelax create linker relaxable code\n"));
}
-
+\f
void
- md_convert_frag(headers, fragP)
-object_headers *headers;
-fragS * fragP;
-
-{ printf("call to md_convert_frag \n"); abort(); }
+md_convert_frag (object_headers *headers ATTRIBUTE_UNUSED,
+ segT seg ATTRIBUTE_UNUSED,
+ fragS *fragP ATTRIBUTE_UNUSED)
+{
+ printf (_("call to md_convert_frag\n"));
+ abort ();
+}
-long
- DEFUN(md_section_align,(seg, size),
- segT seg AND
- long size)
+valueT
+md_section_align (segT seg, valueT size)
{
- return((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
-
+ return ((size + (1 << section_alignment[(int) seg]) - 1)
+ & (-1 << section_alignment[(int) seg]));
}
+/* Attempt to simplify or eliminate a fixup. To indicate that a fixup
+ has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL,
+ we will have to generate a reloc entry. */
void
- md_apply_fix(fixP, val)
-fixS *fixP;
-long val;
+md_apply_fix3 (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED)
{
+ long val = * (long *) valP;
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
-
- switch(fixP->fx_r_type) {
- case R_IMM4L:
- buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf);
- break;
-
- case R_IMM8:
- buf[0] += val;
- break;
-
- case R_DA:
- case R_IMM16:
- *buf++=(val>>8);
- *buf++=val;
- break;
- case R_IMM32:
- *buf++=(val>>24);
- *buf++=(val>>16);
- *buf++=(val>>8);
- *buf++=val;
- break;
- case R_DA | R_SEG:
- *buf++ = (val>>16);
- *buf++ = 0x00;
- *buf++ = (val>>8);
- *buf++ = val;
- break;
- default:
- abort();
-
- }
-}
-void DEFUN(md_operand, (expressionP),expressionS *expressionP)
-{ }
+ switch (fixP->fx_r_type)
+ {
+ case R_IMM4L:
+ buf[0] = (buf[0] & 0xf0) | (val & 0xf);
+ break;
+
+ case R_JR:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ if (val & 1)
+ as_bad (_("cannot branch to odd address"));
+ val /= 2;
+ if (val > 127 || val < -128)
+ as_warn (_("relative jump out of range"));
+ *buf++ = val;
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
+ break;
+
+ case R_DISP7:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ if (val & 1)
+ as_bad (_("cannot branch to odd address"));
+ val /= 2;
+ if (val > 0 || val < -127)
+ as_bad (_("relative jump out of range"));
+ *buf = (*buf & 0x80) | (-val & 0x7f);
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
+ break;
+
+ case R_CALLR:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ if (val & 1)
+ as_bad (_("cannot branch to odd address"));
+ if (val > 4096 || val < -4095)
+ as_bad (_("relative call out of range"));
+ val = -val / 2;
+ *buf = (*buf & 0xf0) | ((val >> 8) & 0xf);
+ buf++;
+ *buf++ = val & 0xff;
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
+ break;
+
+ case R_IMM8:
+ *buf++ = val;
+ break;
+
+ case R_IMM16:
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ break;
+
+ case R_IMM32:
+ *buf++ = (val >> 24);
+ *buf++ = (val >> 16);
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ break;
+
+ case R_REL16:
+ val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
+ if (val > 32767 || val < -32768)
+ as_bad (_("relative address out of range"));
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ fixP->fx_no_overflow = 1;
+ break;
+
+#if 0
+ case R_DA | R_SEG:
+ *buf++ = (val >> 16);
+ *buf++ = 0x00;
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ break;
+#endif
+
+ case 0:
+ md_number_to_chars (buf, val, fixP->fx_size);
+ break;
+
+ default:
+ printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP->fx_r_type);
+ abort ();
+ }
+
+ if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
+ fixP->fx_done = 1;
+}
-int md_long_jump_size;
int
- md_estimate_size_before_relax(fragP, segment_type)
-register fragS *fragP;
-register segT segment_type;
-{
- printf("call tomd_estimate_size_before_relax \n"); abort(); }
-/* Put number into target byte order */
-
-void DEFUN(md_number_to_chars,(ptr, use, nbytes),
- char *ptr AND
- long use AND
- int nbytes)
+md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
+ segT segment_type ATTRIBUTE_UNUSED)
{
- switch (nbytes) {
- case 4: *ptr++ = (use >> 24) & 0xff;
- case 3: *ptr++ = (use >> 16) & 0xff;
- case 2: *ptr++ = (use >> 8) & 0xff;
- case 1: *ptr++ = (use >> 0) & 0xff;
- break;
- default:
- abort();
- }
+ printf (_("call to md_estimate_size_before_relax\n"));
+ abort ();
}
-long md_pcrel_from(fixP)
-fixS *fixP; { abort(); }
-void tc_coff_symbol_emit_hook() { }
+/* Put number into target byte order. */
+
+void
+md_number_to_chars (char *ptr, valueT use, int nbytes)
+{
+ number_to_chars_bigendian (ptr, use, nbytes);
+}
+/* On the Z8000, a PC-relative offset is relative to the address of the
+ instruction plus its size. */
+long
+md_pcrel_from (fixS *fixP)
+{
+ return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
+}
-void tc_reloc_mangle(fix_ptr, intr, base)
-fixS *fix_ptr;
-struct internal_reloc *intr;
-bfd_vma base;
+void
+tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED)
+{
+}
+void
+tc_reloc_mangle (fixS *fix_ptr, struct internal_reloc *intr, bfd_vma base)
{
symbolS *symbol_ptr;
-
+
+ if (fix_ptr->fx_addsy
+ && fix_ptr->fx_subsy)
+ {
+ symbolS *add = fix_ptr->fx_addsy;
+ symbolS *sub = fix_ptr->fx_subsy;
+
+ if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub))
+ as_bad (_("Can't subtract symbols in different sections %s %s"),
+ S_GET_NAME (add), S_GET_NAME (sub));
+ else
+ {
+ int diff = S_GET_VALUE (add) - S_GET_VALUE (sub);
+
+ fix_ptr->fx_addsy = 0;
+ fix_ptr->fx_subsy = 0;
+ fix_ptr->fx_offset += diff;
+ }
+ }
symbol_ptr = fix_ptr->fx_addsy;
-
+
/* If this relocation is attached to a symbol then it's ok
- to output it */
- if (fix_ptr->fx_r_type == RELOC_32) {
- /* cons likes to create reloc32's whatever the size of the reloc..
- */
- switch (fix_ptr->fx_size)
+ to output it. */
+ if (fix_ptr->fx_r_type == 0)
{
-
- case 2:
- intr->r_type = R_IMM16;
- break;
- case 1:
- intr->r_type = R_IMM8;
- break;
- default:
- abort();
-
+ /* cons likes to create reloc32's whatever the size of the reloc. */
+ switch (fix_ptr->fx_size)
+ {
+ case 2:
+ intr->r_type = R_IMM16;
+ break;
+ case 1:
+ intr->r_type = R_IMM8;
+ break;
+ case 4:
+ intr->r_type = R_IMM32;
+ break;
+ default:
+ abort ();
+ }
}
-
- }
- else {
+ else
intr->r_type = fix_ptr->fx_r_type;
- }
-
- intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where +base;
+
+ intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
intr->r_offset = fix_ptr->fx_offset;
-
+
if (symbol_ptr)
- intr->r_symndx = symbol_ptr->sy_number;
+ intr->r_symndx = symbol_ptr->sy_number;
else
- intr->r_symndx = -1;
-
-
+ intr->r_symndx = -1;
}
-
-
projects / deliverable / binutils-gdb.git / blobdiff