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641cf0e2c0
First of all make the declarations globally visible, such that producer and consumer actually share them. For the latter two simply add const (as PPC already had it,), while for the former achieve the effect by converting to an array: There's no need for the extra level of indirection.
1584 lines
36 KiB
C
1584 lines
36 KiB
C
/* tc-z8k.c -- Assemble code for the Zilog Z800n
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Copyright (C) 1992-2024 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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/* Written By Steve Chamberlain <sac@cygnus.com>. */
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#include "as.h"
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#include "safe-ctype.h"
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#define DEFINE_TABLE
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#include "opcodes/z8k-opc.h"
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const char comment_chars[] = "!";
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const char line_comment_chars[] = "#";
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const char line_separator_chars[] = ";";
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extern int machine;
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extern int coff_flags;
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int segmented_mode;
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/* This is non-zero if target was set from the command line.
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If non-zero, 1 means Z8002 (non-segmented), 2 means Z8001 (segmented). */
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static int z8k_target_from_cmdline;
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static void
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s_segm (int segm)
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{
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if (segm)
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{
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segmented_mode = 1;
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bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8001);
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}
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else
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{
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segmented_mode = 0;
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bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8002);
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}
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}
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static void
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even (int ignore ATTRIBUTE_UNUSED)
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{
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frag_align (1, 0, 0);
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record_alignment (now_seg, 1);
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}
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static int
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tohex (int c)
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{
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if (ISDIGIT (c))
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return c - '0';
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if (ISLOWER (c))
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return c - 'a' + 10;
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return c - 'A' + 10;
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}
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static void
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sval (int ignore ATTRIBUTE_UNUSED)
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{
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SKIP_WHITESPACE ();
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if (*input_line_pointer == '\'')
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{
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int c;
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input_line_pointer++;
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c = *input_line_pointer++;
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while (c != '\'')
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{
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if (c == '%')
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{
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c = (tohex (input_line_pointer[0]) << 4)
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| tohex (input_line_pointer[1]);
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input_line_pointer += 2;
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}
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FRAG_APPEND_1_CHAR (c);
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c = *input_line_pointer++;
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}
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demand_empty_rest_of_line ();
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}
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}
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/* This table describes all the machine specific pseudo-ops the assembler
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has to support. The fields are:
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pseudo-op name without dot
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function to call to execute this pseudo-op
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Integer arg to pass to the function
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*/
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const pseudo_typeS md_pseudo_table[] = {
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{"int" , cons , 2},
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{"data.b" , cons , 1},
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{"data.w" , cons , 2},
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{"data.l" , cons , 4},
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{"form" , listing_psize , 0},
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{"heading", listing_title , 0},
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{"import" , s_ignore , 0},
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{"page" , listing_eject , 0},
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{"program", s_ignore , 0},
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{"z8001" , s_segm , 1},
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{"z8002" , s_segm , 0},
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{"segm" , s_segm , 1},
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{"unsegm" , s_segm , 0},
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{"unseg" , s_segm , 0},
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{"name" , s_file , 0},
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{"global" , s_globl , 0},
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{"wval" , cons , 2},
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{"lval" , cons , 4},
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{"bval" , cons , 1},
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{"sval" , sval , 0},
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{"rsect" , obj_coff_section, 0},
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{"sect" , obj_coff_section, 0},
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{"block" , s_space , 0},
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{"even" , even , 0},
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{0 , 0 , 0}
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};
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const char EXP_CHARS[] = "eE";
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/* Chars that mean this number is a floating point constant.
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As in 0f12.456
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or 0d1.2345e12 */
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const char FLT_CHARS[] = "rRsSfFdDxXpP";
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/* Opcode mnemonics. */
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static htab_t opcode_hash_control;
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void
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md_begin (void)
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{
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const opcode_entry_type *opcode;
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unsigned int idx = -1u;
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opcode_hash_control = str_htab_create ();
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for (opcode = z8k_table; opcode->name; opcode++)
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{
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/* Only enter unique codes into the table. */
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if (idx != opcode->idx)
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str_hash_insert (opcode_hash_control, opcode->name, opcode, 0);
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idx = opcode->idx;
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}
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/* Default to z8002. */
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s_segm (z8k_target_from_cmdline ? z8k_target_from_cmdline - 1 : 0);
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/* Insert the pseudo ops, too. */
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for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
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{
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opcode_entry_type *fake_opcode;
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fake_opcode = XNEW (opcode_entry_type);
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fake_opcode->name = md_pseudo_table[idx].poc_name;
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fake_opcode->func = (void *) (md_pseudo_table + idx);
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fake_opcode->opcode = 250;
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str_hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode, 0);
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}
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}
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typedef struct z8k_op {
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/* CLASS_REG_xxx. */
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int regsize;
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/* 0 .. 15. */
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unsigned int reg;
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int mode;
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/* Any other register associated with the mode. */
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unsigned int x_reg;
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/* Any expression. */
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expressionS exp;
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} op_type;
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static expressionS *da_operand;
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static expressionS *imm_operand;
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static int reg[16];
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static int the_cc;
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static int the_ctrl;
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static int the_flags;
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static int the_interrupt;
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/* Determine register number. src points to the ascii number
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(after "rl", "rh", "r", "rr", or "rq"). If a character
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outside the set of {0,',',')','('} follows the number,
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return NULL to indicate that it's not a valid register
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number. */
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static char *
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whatreg (unsigned int *preg, char *src)
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{
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unsigned int new_reg;
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/* src[0] is already known to be a digit. */
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if (ISDIGIT (src[1]))
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{
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new_reg = (src[0] - '0') * 10 + src[1] - '0';
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src += 2;
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}
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else
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{
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new_reg = (src[0] - '0');
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src += 1;
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}
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if (src[0] != 0 && src[0] != ',' && src[0] != '(' && src[0] != ')')
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return NULL;
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*preg = new_reg;
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return src;
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}
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/* Parse operands
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rh0-rh7, rl0-rl7
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r0-r15
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rr0-rr14
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rq0--rq12
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WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
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r0l,r0h,..r7l,r7h
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@WREG
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@WREG+
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@-WREG
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#const
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*/
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/* Try to parse a reg name. Return a pointer to the first character
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in SRC after the reg name. */
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static char *
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parse_reg (char *src, int *mode, unsigned int *preg)
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{
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char *res = NULL;
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char regno;
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/* Check for stack pointer "sp" alias. */
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if ((src[0] == 's' || src[0] == 'S')
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&& (src[1] == 'p' || src[1] == 'P')
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&& (src[2] == 0 || src[2] == ','))
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{
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if (segmented_mode)
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{
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*mode = CLASS_REG_LONG;
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*preg = 14;
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}
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else
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{
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*mode = CLASS_REG_WORD;
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*preg = 15;
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}
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return src + 2;
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}
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if (src[0] == 'r' || src[0] == 'R')
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{
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if (src[1] == 'r' || src[1] == 'R')
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{
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if (src[2] < '0' || src[2] > '9')
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return NULL; /* Assume no register name but a label starting with 'rr'. */
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*mode = CLASS_REG_LONG;
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res = whatreg (preg, src + 2);
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if (res == NULL)
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return NULL; /* Not a valid register name. */
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regno = *preg;
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if (regno > 14)
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as_bad (_("register rr%d out of range"), regno);
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if (regno & 1)
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as_bad (_("register rr%d does not exist"), regno);
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}
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else if (src[1] == 'h' || src[1] == 'H')
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{
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if (src[2] < '0' || src[2] > '9')
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return NULL; /* Assume no register name but a label starting with 'rh'. */
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*mode = CLASS_REG_BYTE;
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res = whatreg (preg, src + 2);
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if (res == NULL)
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return NULL; /* Not a valid register name. */
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regno = *preg;
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if (regno > 7)
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as_bad (_("register rh%d out of range"), regno);
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}
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else if (src[1] == 'l' || src[1] == 'L')
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{
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if (src[2] < '0' || src[2] > '9')
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return NULL; /* Assume no register name but a label starting with 'rl'. */
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*mode = CLASS_REG_BYTE;
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res = whatreg (preg, src + 2);
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if (res == NULL)
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return NULL; /* Not a valid register name. */
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regno = *preg;
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if (regno > 7)
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as_bad (_("register rl%d out of range"), regno);
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*preg += 8;
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}
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else if (src[1] == 'q' || src[1] == 'Q')
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{
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if (src[2] < '0' || src[2] > '9')
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return NULL; /* Assume no register name but a label starting with 'rq'. */
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*mode = CLASS_REG_QUAD;
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res = whatreg (preg, src + 2);
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if (res == NULL)
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return NULL; /* Not a valid register name. */
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regno = *preg;
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if (regno > 12)
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as_bad (_("register rq%d out of range"), regno);
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if (regno & 3)
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as_bad (_("register rq%d does not exist"), regno);
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}
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else
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{
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if (src[1] < '0' || src[1] > '9')
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return NULL; /* Assume no register name but a label starting with 'r'. */
|
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*mode = CLASS_REG_WORD;
|
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res = whatreg (preg, src + 1);
|
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if (res == NULL)
|
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return NULL; /* Not a valid register name. */
|
||
regno = *preg;
|
||
if (regno > 15)
|
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as_bad (_("register r%d out of range"), regno);
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}
|
||
}
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||
return res;
|
||
}
|
||
|
||
static char *
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||
parse_exp (char *s, expressionS *op)
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{
|
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char *save = input_line_pointer;
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||
char *new_pointer;
|
||
|
||
input_line_pointer = s;
|
||
expression (op);
|
||
if (op->X_op == O_absent)
|
||
as_bad (_("missing operand"));
|
||
new_pointer = input_line_pointer;
|
||
input_line_pointer = save;
|
||
return new_pointer;
|
||
}
|
||
|
||
/* The many forms of operand:
|
||
|
||
<rb>
|
||
<r>
|
||
<rr>
|
||
<rq>
|
||
@r
|
||
#exp
|
||
exp
|
||
exp(r)
|
||
r(#exp)
|
||
r(r)
|
||
*/
|
||
|
||
static char *
|
||
checkfor (char *ptr, char what)
|
||
{
|
||
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
|
||
regword (int mode, const char *string)
|
||
{
|
||
int ok;
|
||
|
||
ok = CLASS_REG_WORD;
|
||
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
|
||
regaddr (int mode, const 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);
|
||
}
|
||
}
|
||
|
||
struct ctrl_names {
|
||
int value;
|
||
const 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 }
|
||
};
|
||
|
||
static void
|
||
get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
|
||
{
|
||
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;
|
||
const char *name;
|
||
};
|
||
|
||
static struct flag_names flag_table[] = {
|
||
{ 0x1, "P" },
|
||
{ 0x1, "V" },
|
||
{ 0x2, "S" },
|
||
{ 0x4, "Z" },
|
||
{ 0x8, "C" },
|
||
{ 0x0, "+" },
|
||
{ 0x0, "," },
|
||
{ 0, 0 }
|
||
};
|
||
|
||
static void
|
||
get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
|
||
{
|
||
char *src = *ptr;
|
||
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;
|
||
const 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;
|
||
const 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++)
|
||
{
|
||
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 = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
|
||
}
|
||
|
||
static void
|
||
get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
|
||
{
|
||
char *src = *ptr;
|
||
char *end;
|
||
|
||
mode->mode = 0;
|
||
|
||
while (*src == ' ')
|
||
src++;
|
||
if (*src == '#')
|
||
{
|
||
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
|
||
{
|
||
unsigned int regn;
|
||
|
||
end = parse_reg (src, &mode->mode, ®n);
|
||
|
||
if (end)
|
||
{
|
||
int nw;
|
||
unsigned int nr;
|
||
|
||
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");
|
||
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
|
||
{
|
||
mode->reg = regn;
|
||
mode->x_reg = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* 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);
|
||
}
|
||
}
|
||
}
|
||
*ptr = src;
|
||
}
|
||
|
||
static char *
|
||
get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand)
|
||
{
|
||
char *ptr = op_end;
|
||
char *savptr;
|
||
|
||
switch (opcode->noperands)
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
return ptr;
|
||
}
|
||
|
||
/* Passed a pointer to a list of opcodes which use different
|
||
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;
|
||
int found = 0;
|
||
unsigned int noperands = opcode->noperands;
|
||
|
||
unsigned int this_index = opcode->idx;
|
||
|
||
while (this_index == opcode->idx && !found)
|
||
{
|
||
unsigned int i;
|
||
|
||
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;
|
||
}
|
||
}
|
||
|
||
found = 1;
|
||
fail:
|
||
;
|
||
}
|
||
if (found)
|
||
return this_try;
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
static unsigned char buffer[20];
|
||
|
||
static void
|
||
newfix (int ptr, bfd_reloc_code_real_type type, int size, expressionS *operand)
|
||
{
|
||
fixS *fixP;
|
||
|
||
/* Size is in nibbles. */
|
||
if (operand->X_add_symbol
|
||
|| 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);
|
||
if (is_pcrel)
|
||
fixP->fx_no_overflow = 1;
|
||
}
|
||
}
|
||
|
||
static unsigned char *
|
||
apply_fix (unsigned char *ptr, bfd_reloc_code_real_type type,
|
||
expressionS *operand, int size)
|
||
{
|
||
long n = operand->X_add_number;
|
||
|
||
/* size is in nibbles. */
|
||
|
||
newfix ((ptr - buffer) / 2, type, size + 1, operand);
|
||
|
||
if (type == BFD_RELOC_Z8K_DISP7)
|
||
{
|
||
/* 2 nibbles, but most significant bit is part of the opcode == 7 bits. */
|
||
*ptr++ = (n >> 4) & 7;
|
||
*ptr++ = n >> 0;
|
||
}
|
||
else
|
||
{
|
||
switch (size)
|
||
{
|
||
case 8: /* 8 nibbles == 32 bits. */
|
||
*ptr++ = n >> 28;
|
||
*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;
|
||
}
|
||
}
|
||
return ptr;
|
||
}
|
||
|
||
/* Now we know what sort of opcodes it is. Let's build the bytes. */
|
||
|
||
static void
|
||
build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED)
|
||
{
|
||
unsigned char *output_ptr = buffer;
|
||
int c;
|
||
int nibble;
|
||
unsigned int *class_ptr;
|
||
|
||
frag_wane (frag_now);
|
||
frag_new (0);
|
||
|
||
if (frag_room () < 8)
|
||
frag_grow (8); /* Make room for maximum instruction size. */
|
||
|
||
memset (buffer, 0, sizeof (buffer));
|
||
class_ptr = this_try->byte_info;
|
||
|
||
for (nibble = 0; (c = *class_ptr++); nibble++)
|
||
{
|
||
|
||
switch (c & CLASS_MASK)
|
||
{
|
||
default:
|
||
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, BFD_RELOC_32, da_operand, 8);
|
||
}
|
||
else
|
||
{
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
|
||
}
|
||
da_operand = 0;
|
||
break;
|
||
case CLASS_DISP8:
|
||
/* pc rel 8 bit */
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_8_PCREL, da_operand, 2);
|
||
da_operand = 0;
|
||
break;
|
||
|
||
case CLASS_0DISP7:
|
||
/* pc rel 7 bit */
|
||
*output_ptr = 0;
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
|
||
da_operand = 0;
|
||
break;
|
||
|
||
case CLASS_1DISP7:
|
||
/* pc rel 7 bit */
|
||
*output_ptr = 0x80;
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_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 pattern 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, BFD_RELOC_Z8K_CALLR, da_operand, 4);
|
||
break;
|
||
case ARG_DISP16:
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_16_PCREL, da_operand, 4);
|
||
break;
|
||
default:
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_16, 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, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
|
||
break;
|
||
/*case ARG_IMMNMINUS1: not used. */
|
||
case ARG_IMM4M1:
|
||
imm_operand->X_add_number--;
|
||
/* Fall through. */
|
||
case ARG_IMM4:
|
||
if (imm_operand->X_add_number > 15)
|
||
as_bad (_("immediate value out of range"));
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
|
||
break;
|
||
case ARG_NIM8:
|
||
imm_operand->X_add_number = -imm_operand->X_add_number;
|
||
/* Fall through. */
|
||
case ARG_IMM8:
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2);
|
||
break;
|
||
case ARG_IMM16:
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_16, imm_operand, 4);
|
||
break;
|
||
case ARG_IMM32:
|
||
output_ptr = apply_fix (output_ptr, BFD_RELOC_32, imm_operand, 8);
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Copy from the nibble buffer into the frag. */
|
||
{
|
||
int length = (output_ptr - buffer) / 2;
|
||
unsigned char *src = buffer;
|
||
unsigned char *fragp = (unsigned char *) frag_more (length);
|
||
|
||
while (src < output_ptr)
|
||
{
|
||
*fragp = ((src[0] & 0xf) << 4) | (src[1] & 0xf);
|
||
src += 2;
|
||
fragp++;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This is the guts of the machine-dependent assembler. STR points to a
|
||
machine dependent instruction. This function is supposed to emit
|
||
the frags/bytes it assembles to. */
|
||
|
||
void
|
||
md_assemble (char *str)
|
||
{
|
||
char c;
|
||
char *op_start;
|
||
char *op_end;
|
||
struct z8k_op operand[4];
|
||
opcode_entry_type *opcode;
|
||
|
||
/* Drop leading whitespace. */
|
||
while (*str == ' ')
|
||
str++;
|
||
|
||
/* Find the op code end. */
|
||
for (op_start = op_end = str;
|
||
*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; /* Zero-terminate op code string for str_hash_find() call. */
|
||
|
||
opcode = (opcode_entry_type *) str_hash_find (opcode_hash_control, op_start);
|
||
|
||
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 (new_input_line_pointer == NULL || opcode == NULL)
|
||
{
|
||
/* 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);
|
||
}
|
||
}
|
||
|
||
/* We have no need to default values of symbols. */
|
||
|
||
symbolS *
|
||
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Various routines to kill one day. */
|
||
|
||
const char *
|
||
md_atof (int type, char *litP, int *sizeP)
|
||
{
|
||
return ieee_md_atof (type, litP, sizeP, true);
|
||
}
|
||
|
||
const char md_shortopts[] = "z:";
|
||
|
||
const struct option md_longopts[] =
|
||
{
|
||
#define OPTION_RELAX (OPTION_MD_BASE)
|
||
{"linkrelax", no_argument, NULL, OPTION_RELAX},
|
||
{NULL, no_argument, NULL, 0}
|
||
};
|
||
|
||
const size_t md_longopts_size = sizeof (md_longopts);
|
||
|
||
int
|
||
md_parse_option (int c, const char *arg)
|
||
{
|
||
switch (c)
|
||
{
|
||
case 'z':
|
||
if (!strcmp (arg, "8001"))
|
||
z8k_target_from_cmdline = 2;
|
||
else if (!strcmp (arg, "8002"))
|
||
z8k_target_from_cmdline = 1;
|
||
else
|
||
{
|
||
as_bad (_("invalid architecture -z%s"), arg);
|
||
return 0;
|
||
}
|
||
break;
|
||
|
||
case OPTION_RELAX:
|
||
linkrelax = 1;
|
||
break;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
md_show_usage (FILE *stream)
|
||
{
|
||
fprintf (stream, _("\
|
||
Z8K options:\n\
|
||
-z8001 generate segmented code\n\
|
||
-z8002 generate unsegmented code\n\
|
||
-linkrelax create linker relaxable code\n"));
|
||
}
|
||
|
||
void
|
||
md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
|
||
segT sec ATTRIBUTE_UNUSED,
|
||
fragS *fragP ATTRIBUTE_UNUSED)
|
||
{
|
||
printf (_("call to md_convert_frag\n"));
|
||
abort ();
|
||
}
|
||
|
||
/* Generate a machine dependent reloc from a fixup. */
|
||
|
||
arelent*
|
||
tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
|
||
fixS *fixp ATTRIBUTE_UNUSED)
|
||
{
|
||
arelent *reloc;
|
||
|
||
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;
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
|
||
|
||
if (! reloc->howto)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("Cannot represent %s relocation in object file"),
|
||
bfd_get_reloc_code_name (fixp->fx_r_type));
|
||
abort ();
|
||
}
|
||
return reloc;
|
||
}
|
||
|
||
valueT
|
||
md_section_align (segT seg, valueT size)
|
||
{
|
||
int align = bfd_section_alignment (seg);
|
||
valueT mask = ((valueT) 1 << align) - 1;
|
||
|
||
return (size + mask) & ~mask;
|
||
}
|
||
|
||
/* 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 (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 BFD_RELOC_Z8K_IMM4L:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
buf[0] = (buf[0] & 0xf0) | (val & 0xf);
|
||
break;
|
||
|
||
case BFD_RELOC_8:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
*buf++ = val;
|
||
break;
|
||
|
||
case BFD_RELOC_16:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
{
|
||
*buf++ = (val >> 8);
|
||
*buf++ = val;
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
{
|
||
*buf++ = (val >> 24);
|
||
*buf++ = (val >> 16);
|
||
*buf++ = (val >> 8);
|
||
*buf++ = val;
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_8_PCREL:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
{
|
||
if (val & 1)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("cannot branch to odd address"));
|
||
val /= 2;
|
||
if (val > 127 || val < -128)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("relative jump out of range"));
|
||
*buf++ = val;
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 1;
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_16_PCREL:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
{
|
||
val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
|
||
if (val > 32767 || val < -32768)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("relative address out of range"));
|
||
*buf++ = (val >> 8);
|
||
*buf++ = val;
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 1;
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_Z8K_CALLR:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
{
|
||
if (val & 1)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("cannot branch to odd address"));
|
||
if (val > 4096 || val < -4095)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("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 BFD_RELOC_Z8K_DISP7:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 0;
|
||
}
|
||
else
|
||
{
|
||
if (val & 1)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("cannot branch to odd address"));
|
||
val /= 2;
|
||
if (val > 0 || val < -127)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("relative jump out of range"));
|
||
*buf = (*buf & 0x80) | (-val & 0x7f);
|
||
fixP->fx_no_overflow = 1;
|
||
fixP->fx_done = 1;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
printf(_("md_apply_fix: 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_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
|
||
segT segment_type ATTRIBUTE_UNUSED)
|
||
{
|
||
printf (_("call to md_estimate_size_before_relax\n"));
|
||
abort ();
|
||
}
|
||
|
||
/* 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_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED)
|
||
{
|
||
}
|