sdcc/sdas/xa51/xa_main.h

   1 /* xa_main.h - Paul's XA51 Assembler
   2
   3    Copyright 1997,2002 Paul Stoffregen (paul at pjrc dot com)
   4
   5 This program is free software; you can redistribute it and/or modify it
   6 under the terms of the GNU General Public License as published by the
   7 Free Software Foundation; either version 3, or (at your option) any
   8 later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #define SIZE8 0
  19 #define SIZE16 1
  20 #define SIZE32 2
  21 #define UNKNOWN -1
  22 #define WORD_REG 16384
  23 #define BYTE_REG 32768
  24
  25 /* max # of bytes in db directive */
  26 #define MAX_DB          2500
  27
  28 /* max # char in symbol name */
  29 #define MAX_SYMBOL      1024
  30
  31 /* max # of bytes per line */
  32 #define MAX_LINE        4096
  33
  34 /* REL() computes branch operand from dest and memory */
  35 /* location of the jump instruction itself */
  36 /* this is later adjusted by one for jcu, of course */
  37 #define BRANCH_SPACING 2
  38 #define REL(dest, mem) (((dest)-((((mem)+1)/(\
  39 BRANCH_SPACING))*(BRANCH_SPACING)))/(BRANCH_SPACING))
  40
  41 #define NOP_OPCODE 0    /* opcode for NOP */
  42
  43 /* a linked list of all the symbols */
  44
  45 struct symbol {
  46         char *name;
  47         int value;
  48         int istarget;   /* 1 if a branch target, 0 otherwise */
  49         int isdef;      /* 1 if defined, 0 if no value yet */
  50         int line_def;   /* line in which is was defined */
  51         int isbit;      /* 1 if a bit address, 0 otherwise */
  52         int issfr;
  53         int isreg;      /* 1 if a register, 0 otehrwise */
  54         int global ;    /* is defined as global */
  55         char mode;      /* Absolute, Relative, Tmplabel, eXternal */
  56         short lk_index; /* symbol index for the linker */
  57         int area;       /* the area that this symbol is in */
  58         struct symbol *next; };
  59
  60 /* a list of all the symbols that are branch targets */
  61 /* (and will need to get aligned on 4 byte boundries) */
  62
  63 struct target {
  64         char *name;
  65         struct target *next; };
  66
  67 struct area_struct {
  68         int start;
  69         int alloc_position;
  70         int defsEmitted;
  71         int size;
  72 };
  73
  74 extern int current_area;
  75
  76 #define MEM_POS (area[current_area].alloc_position)
  77
  78 enum {
  79   AREA_CSEG=1,
  80   AREA_DSEG,
  81   // AREA_OSEG,
  82   // AREA_ISEG,
  83   AREA_BSEG,
  84   AREA_XSEG,
  85   AREA_XISEG,
  86   AREA_XINIT,
  87   AREA_GSINIT,
  88   AREA_GSFINAL,
  89   AREA_HOME,
  90   AREA_SSEG,
  91   NUM_AREAS=AREA_SSEG
  92 };
  93
  94 extern struct area_struct area[NUM_AREAS];
  95
  96 extern FILE *yyin;
  97 extern char *yytext;
  98 extern int lineno;
  99 extern int p1, p2, p3, mem, m_len;
 100
 101 extern struct symbol * build_sym_list(char *thename);
 102 extern int assign_value(char *thename, int thevalue, char mode);
 103 extern int mk_bit(char *thename, int current_area);
 104 extern int mk_reg(char *thename);
 105 extern void out(int *byte_list, int num);
 106 extern int is_target(char *thename);
 107 extern void pad_with_nop();
 108 extern int binary2int(char *str);
 109 extern int is_bit(char *thename);
 110 extern int is_reg(char *thename);
 111 extern struct symbol * is_def(char *thename);
 112 extern struct symbol * is_ref(char *thename);
 113 extern int get_value(char *thename);
 114 extern struct symbol *findSymbol (char *thename);
 115 extern char rel_line[2][132];
 116 extern char operand[2][MAX_SYMBOL];
 117 extern void error(char*);
 118 int mk_bit(char*, int);
 119 int mk_sfr(char*);
 120 int mk_global(char*);
 121 struct target * build_target_list(char *thename);
 122 struct symbol * build_sym_list(char *);
 123 int find_size_reg(int op1spec);
 124 int find_size0(int isize);
 125 int find_size1(int isize, int op1spec);
 126 int find_size2(int isize, int op1spec, int op2spec);
 127 int yyerror(char *s);
 128 int imm_data4_signed(int value);
 129 int imm_data4_unsigned(int value);
 130 int imm_data5_unsigned(int value);
 131 int imm_data8(int value);
 132 int imm_data16(int value);
 133 int reg(int reg_spec);
 134 int reg_indirect(int reg_spec);
 135 int lsb(int value);
 136 int msb(int value);
 137 int direct_addr(int value);
 138 int bit_addr(int value);
 139 int rel16(int pos, int dest);
 140 int rel8(int pos, int dest);
 141 char *areaToString (int area);
 142
 143 FILE *frel, *fmem, *list_fp, *sym_fp;
 144
 145 extern void relout();