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-rw-r--r--gas/config/tc-z8k.c1589
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diff --git a/gas/config/tc-z8k.c b/gas/config/tc-z8k.c
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+++ b/gas/config/tc-z8k.c
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+/* tc-z8k.c -- Assemble code for the Zilog Z800n
+ Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation.
+
+ 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, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+/*
+ Written By Steve Chamberlain
+ sac@cygnus.com
+ */
+#define DEFINE_TABLE
+#include <stdio.h>
+
+#include "opcodes/z8k-opc.h"
+
+#include "as.h"
+#include "bfd.h"
+#include <ctype.h>
+
+const char comment_chars[] =
+{'!', 0};
+const char line_separator_chars[] =
+{';', 0};
+const char line_comment_chars[] =
+{'#', 0};
+
+extern int machine;
+extern int coff_flags;
+int segmented_mode;
+const 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
+ */
+
+void cons ();
+
+void
+s_segm ()
+{
+ segmented_mode = 1;
+ machine = bfd_mach_z8001;
+ coff_flags = F_Z8001;
+}
+
+void
+s_unseg ()
+{
+ segmented_mode = 0;
+ machine = bfd_mach_z8002;
+ coff_flags = F_Z8002;
+}
+
+static
+void
+even ()
+{
+ frag_align (1, 0, 0);
+ record_alignment (now_seg, 1);
+}
+
+void obj_coff_section ();
+
+int
+tohex (c)
+ int c;
+{
+ if (isdigit (c))
+ return c - '0';
+ if (islower (c))
+ return c - 'a' + 10;
+ return c - 'A' + 10;
+}
+
+void
+sval ()
+{
+
+ 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 ();
+ }
+
+}
+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, 0},
+ {"z8002", s_unseg, 0},
+
+
+ {"segm", s_segm, 0},
+ {"unsegm", s_unseg, 0},
+ {"unseg", s_unseg, 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 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 */
+
+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 */
+ char *src = opcode->name;
+
+ if (strcmp (opcode->name, prev_name))
+ {
+ hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
+ idx++;
+ }
+ opcode->idx = idx;
+ prev_name = opcode->name;
+ }
+
+ /* default to z8002 */
+ s_unseg ();
+
+ /* insert the pseudo ops too */
+ for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
+ {
+ opcode_entry_type *fake_opcode;
+ fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
+ fake_opcode->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);
+ }
+
+ linkrelax = 1;
+}
+
+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 */
+
+ int mode;
+
+ unsigned int x_reg; /* any other register associated with the mode */
+ expressionS exp; /* any expression */
+}
+
+op_type;
+
+static expressionS *da_operand;
+static expressionS *imm_operand;
+
+int reg[16];
+int the_cc;
+int the_ctrl;
+int the_flags;
+int the_interrupt;
+
+char *
+DEFUN (whatreg, (reg, src),
+ int *reg AND
+ char *src)
+{
+ if (isdigit (src[1]))
+ {
+ *reg = (src[0] - '0') * 10 + src[1] - '0';
+ return src + 2;
+ }
+ else
+ {
+ *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)
+{
+ char *res = 0;
+ char regno;
+
+ if (src[0] == 's' && src[1] == 'p')
+ {
+ if (segmented_mode)
+ {
+ *mode = CLASS_REG_LONG;
+ *reg = 14;
+ }
+ else
+ {
+ *mode = CLASS_REG_WORD;
+ *reg = 15;
+ }
+ return src + 2;
+ }
+ if (src[0] == 'r')
+ {
+ if (src[1] == 'r')
+ {
+ *mode = CLASS_REG_LONG;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 14)
+ as_warn (_("register rr%d, out of range."),regno);
+ }
+ else if (src[1] == 'h')
+ {
+ *mode = CLASS_REG_BYTE;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 7)
+ as_warn (_("register rh%d, out of range."),regno);
+ }
+ else if (src[1] == 'l')
+ {
+ *mode = CLASS_REG_BYTE;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 7)
+ as_warn (_("register rl%d, out of range."),regno);
+ *reg += 8;
+ }
+ else if (src[1] == 'q')
+ {
+ *mode = CLASS_REG_QUAD;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 12)
+ as_warn (_("register rq%d, out of range."),regno);
+ }
+ else
+ {
+ *mode = CLASS_REG_WORD;
+ res = whatreg (reg, src + 1);
+ regno = *reg;
+ if (regno > 15)
+ as_warn (_("register r%d, out of range."),regno);
+ }
+ }
+ return res;
+
+}
+
+char *
+DEFUN (parse_exp, (s, op),
+ char *s AND
+ expressionS * op)
+{
+ 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(r)
+ r(#exp)
+ r(r)
+
+
+
+ */
+
+static
+char *
+DEFUN (checkfor, (ptr, what),
+ char *ptr AND
+ 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
+DEFUN (regword, (mode, string),
+ int mode AND
+ 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
+DEFUN (regaddr, (mode, string),
+ int mode AND
+ 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;
+ char *name;
+};
+
+struct ctrl_names ctrl_table[] =
+{
+ 0x2, "fcw",
+ 0X3, "refresh",
+ 0x4, "psapseg",
+ 0x5, "psapoff",
+ 0x5, "psap",
+ 0x6, "nspseg",
+ 0x7, "nspoff",
+ 0x7, "nsp",
+ 0, 0
+};
+
+static void
+DEFUN (get_ctrl_operand, (ptr, mode, dst),
+ char **ptr AND
+ struct z8k_op *mode AND
+ unsigned int dst)
+{
+ char *src = *ptr;
+ int r;
+ int i;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_CTRL;
+ for (i = 0; ctrl_table[i].name; i++)
+ {
+ int j;
+
+ for (j = 0; ctrl_table[i].name[j]; j++)
+ {
+ if (ctrl_table[i].name[j] != src[j])
+ goto fail;
+ }
+ the_ctrl = ctrl_table[i].value;
+ *ptr = src + j;
+ return;
+ fail:;
+ }
+ the_ctrl = 0;
+ return;
+}
+
+struct flag_names
+{
+ int value;
+ char *name;
+
+};
+
+struct flag_names flag_table[] =
+{
+ 0x1, "p",
+ 0x1, "v",
+ 0x2, "s",
+ 0x4, "z",
+ 0x8, "c",
+ 0x0, "+",
+ 0, 0
+};
+
+static void
+DEFUN (get_flags_operand, (ptr, mode, dst),
+ char **ptr AND
+ struct z8k_op *mode AND
+ unsigned int dst)
+{
+ char *src = *ptr;
+ int r;
+ 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;
+ for (i = 0; flag_table[i].name; i++)
+ {
+ if (flag_table[i].name[0] == src[j])
+ {
+ the_flags = the_flags | flag_table[i].value;
+ goto match;
+ }
+ }
+ goto done;
+ match:
+ ;
+ }
+ done:
+ *ptr = src + j;
+ return;
+}
+
+
+struct interrupt_names
+{
+ int value;
+ char *name;
+
+};
+
+struct interrupt_names intr_table[] =
+{
+ 0x1, "nvi",
+ 0x2, "vi",
+ 0x3, "both",
+ 0x3, "all",
+ 0, 0
+};
+
+static void
+DEFUN (get_interrupt_operand, (ptr, mode, dst),
+ char **ptr AND
+ struct z8k_op *mode AND
+ unsigned int dst)
+{
+ char *src = *ptr;
+ int r;
+ int i;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_IMM;
+ for (i = 0; intr_table[i].name; i++)
+ {
+ int j;
+
+ for (j = 0; intr_table[i].name[j]; j++)
+ {
+ if (intr_table[i].name[j] != src[j])
+ goto fail;
+ }
+ the_interrupt = intr_table[i].value;
+ *ptr = src + j;
+ return;
+ fail:;
+ }
+ the_interrupt = 0x0;
+ return;
+}
+
+struct cc_names
+{
+ int value;
+ char *name;
+
+};
+
+struct cc_names table[] =
+{
+ 0x0, "f",
+ 0x1, "lt",
+ 0x2, "le",
+ 0x3, "ule",
+ 0x4, "ov",
+ 0x4, "pe",
+ 0x5, "mi",
+ 0x6, "eq",
+ 0x6, "z",
+ 0x7, "c",
+ 0x7, "ult",
+ 0x8, "t",
+ 0x9, "ge",
+ 0xa, "gt",
+ 0xb, "ugt",
+ 0xc, "nov",
+ 0xc, "po",
+ 0xd, "pl",
+ 0xe, "ne",
+ 0xe, "nz",
+ 0xf, "nc",
+ 0xf, "uge",
+ 0, 0
+};
+
+static void
+DEFUN (get_cc_operand, (ptr, mode, dst),
+ char **ptr AND
+ struct z8k_op *mode AND
+ unsigned int dst)
+{
+ char *src = *ptr;
+ int r;
+ int i;
+
+ 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;
+ }
+ the_cc = table[i].value;
+ *ptr = src + j;
+ return;
+ fail:;
+ }
+ the_cc = 0x8;
+}
+
+static void
+get_operand (ptr, mode, dst)
+ char **ptr;
+ struct z8k_op *mode;
+ unsigned int dst;
+{
+ char *src = *ptr;
+ char *end;
+ unsigned int num;
+ unsigned int len;
+ unsigned int size;
+
+ 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 == '@')
+ {
+ int d;
+
+ mode->mode = CLASS_IR;
+ src = parse_reg (src + 1, &d, &mode->reg);
+ }
+ else
+ {
+ int regn;
+
+ end = parse_reg (src, &mode->mode, &regn);
+
+ if (end)
+ {
+ int nw, 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");
+/* regword (mode->mode, "ra(rb) rb");*/
+ 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), &regn);
+ 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 (opcode, op_end, operand)
+ 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;
+ break;
+
+ case 1:
+ ptr++;
+ if (opcode->arg_info[0] == CLASS_CC)
+ {
+ get_cc_operand (&ptr, operand + 0, 0);
+ }
+ else if (opcode->arg_info[0] == CLASS_FLAGS)
+ {
+ get_flags_operand (&ptr, operand + 0, 0);
+ }
+ 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:
+ ptr++;
+ savptr = ptr;
+ if (opcode->arg_info[0] == CLASS_CC)
+ {
+ get_cc_operand (&ptr, operand + 0, 0);
+ }
+ 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;
+ if (*ptr == ',')
+ ptr++;
+ get_ctrl_operand (&ptr, operand + 1, 1);
+ return ptr;
+ }
+ }
+ else
+ {
+ get_operand (&ptr, operand + 0, 0);
+ }
+ if (ptr == 0)
+ return;
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, 1);
+ break;
+
+ case 3:
+ ptr++;
+ 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:
+ ptr++;
+ 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 *
+DEFUN (get_specific, (opcode, operands),
+ opcode_entry_type * opcode AND
+ op_type * operands)
+
+{
+ 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 mode = operands[i].mode;
+
+ if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
+ {
+ /* it could be an 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_X:
+ case CLASS_IR:
+ 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;
+ }
+ }
+
+ found = 1;
+ fail:;
+ }
+ if (found)
+ return this_try;
+ else
+ return 0;
+}
+
+static void
+DEFUN (check_operand, (operand, width, string),
+ struct z8k_op *operand AND
+ unsigned int width AND
+ char *string)
+{
+ if (operand->exp.X_add_symbol == 0
+ && operand->exp.X_op_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))
+ {
+ as_warn (_("operand %s0x%x out of range."), string, operand->exp.X_add_number);
+ }
+ }
+
+}
+
+static char buffer[20];
+
+static void
+DEFUN (newfix, (ptr, type, operand),
+ int ptr AND
+ int type AND
+ expressionS * operand)
+{
+ if (operand->X_add_symbol
+ || operand->X_op_symbol
+ || operand->X_add_number)
+ {
+ fix_new_exp (frag_now,
+ ptr,
+ 1,
+ operand,
+ 0,
+ type);
+ }
+}
+
+static char *
+DEFUN (apply_fix, (ptr, type, operand, size),
+ char *ptr AND
+ int type AND
+ expressionS * operand AND
+ int size)
+{
+ int n = operand->X_add_number;
+
+ operand->X_add_number = n;
+ newfix ((ptr - buffer) / 2, type, operand);
+#if 1
+ switch (size)
+ {
+ case 8: /* 8 nibbles == 32 bits */
+ *ptr++ = n >> 28;
+ *ptr++ = n >> 24;
+ *ptr++ = n >> 20;
+ *ptr++ = n >> 16;
+ case 4: /* 4 niblles == 16 bits */
+ *ptr++ = n >> 12;
+ *ptr++ = n >> 8;
+ case 2:
+ *ptr++ = n >> 4;
+ case 1:
+ *ptr++ = n >> 0;
+ break;
+ }
+#endif
+ return ptr;
+
+}
+
+/* Now we know what sort of opcodes it is, lets build the bytes -
+ */
+#define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
+static void
+build_bytes (this_try, operand)
+ opcode_entry_type * this_try;
+ struct z8k_op *operand;
+{
+ unsigned int i;
+
+ int length;
+ char *output;
+ char *output_ptr = buffer;
+ char part;
+ int c;
+ char high;
+ int nib;
+ int nibble;
+ unsigned int *class_ptr;
+
+ frag_wane (frag_now);
+ frag_new (0);
+
+ memset (buffer, 20, 0);
+ class_ptr = this_try->byte_info;
+top:;
+
+ 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;
+ 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:
+ *output_ptr++ = the_ctrl;
+ break;
+ case CLASS_1CCC:
+ *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_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_DISP:
+ output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
+ da_operand = 0;
+ break;
+
+ case CLASS_IMM:
+ {
+ nib = 0;
+ switch (c & ARG_MASK)
+ {
+ case ARG_IMM4:
+ output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
+ break;
+ case ARG_IMM4M1:
+ imm_operand->X_add_number--;
+ output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
+ break;
+ case ARG_IMMNMINUS1:
+ imm_operand->X_add_number--;
+ 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;
+ 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 */
+
+ {
+ 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.
+ */
+
+void
+DEFUN (md_assemble, (str),
+ char *str)
+{
+ char *op_start;
+ char *op_end;
+ unsigned int i;
+ struct z8k_op operand[3];
+ opcode_entry_type *opcode;
+ opcode_entry_type *prev_opcode;
+
+ char *dot = 0;
+ char c;
+
+ /* Drop leading whitespace */
+ while (*str == ' ')
+ 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 "));
+ }
+ 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;
+ }
+
+ if (opcode->opcode == 250)
+ {
+ /* was really a pseudo op */
+
+ pseudo_typeS *p;
+ char oc;
+
+ char *old = input_line_pointer;
+ *op_end = c;
+
+
+ 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
+ {
+ input_line_pointer = get_operands (opcode, op_end,
+ operand);
+ 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);
+ }
+}
+
+void
+DEFUN (tc_crawl_symbol_chain, (headers),
+ object_headers * headers)
+{
+ printf (_("call to tc_crawl_symbol_chain \n"));
+}
+
+symbolS *
+DEFUN (md_undefined_symbol, (name),
+ char *name)
+{
+ return 0;
+}
+
+void
+DEFUN (tc_headers_hook, (headers),
+ object_headers * headers)
+{
+ printf (_("call to tc_headers_hook \n"));
+}
+
+/* Various routines to kill one day */
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
+
+/* Turn a string in input_line_pointer into a floating point constant of type
+ type, and store the appropriate bytes in *litP. The number of LITTLENUMS
+ emitted is stored in *sizeP . An error message is returned, or NULL on OK.
+ */
+char *
+md_atof (type, litP, sizeP)
+ char 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 0;
+}
+
+CONST char *md_shortopts = "z:";
+struct option md_longopts[] = {
+ {NULL, no_argument, NULL, 0}
+};
+size_t md_longopts_size = sizeof(md_longopts);
+
+int
+md_parse_option (c, arg)
+ int c;
+ char *arg;
+{
+ switch (c)
+ {
+ case 'z':
+ if (!strcmp (arg, "8001"))
+ s_segm ();
+ else if (!strcmp (arg, "8002"))
+ s_unseg ();
+ else
+ {
+ as_bad (_("invalid architecture -z%s"), arg);
+ return 0;
+ }
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+void
+md_show_usage (stream)
+ FILE *stream;
+{
+ fprintf(stream, _("\
+Z8K options:\n\
+-z8001 generate segmented code\n\
+-z8002 generate unsegmented code\n"));
+}
+
+void
+tc_aout_fix_to_chars ()
+{
+ printf (_("call to tc_aout_fix_to_chars \n"));
+ abort ();
+}
+
+void
+md_convert_frag (headers, seg, fragP)
+ object_headers *headers;
+ segT seg;
+ fragS *fragP;
+{
+ printf (_("call to md_convert_frag \n"));
+ abort ();
+}
+
+valueT
+DEFUN (md_section_align, (seg, size),
+ segT seg AND
+ valueT size)
+{
+ return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
+
+}
+
+void
+md_apply_fix (fixP, val)
+ fixS *fixP;
+ long val;
+{
+ 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_JR:
+
+ *buf++ = val;
+ /* if (val != 0) abort();*/
+ break;
+
+ case R_DISP7:
+
+ *buf++ += val;
+ /* if (val != 0) abort();*/
+ break;
+
+ case R_IMM8:
+ buf[0] += 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;
+#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:
+ abort ();
+
+ }
+}
+
+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
+ valueT use AND
+ int nbytes)
+{
+ number_to_chars_bigendian (ptr, use, nbytes);
+}
+long
+md_pcrel_from (fixP)
+ fixS *fixP;
+{
+ abort ();
+}
+
+void
+tc_coff_symbol_emit_hook (s)
+ struct symbol *s;
+{
+}
+
+void
+tc_reloc_mangle (fix_ptr, intr, base)
+ 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 == 0)
+ {
+ /* 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
+ {
+ intr->r_type = fix_ptr->fx_r_type;
+ }
+
+ 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;
+ else
+ intr->r_symndx = -1;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-21 05:44:09 +0000