sdcc/src/z80/z80.h

   1 /** @file z80/z80.h
   2     Common definitions for the the z80-related ports.
   3 */
   4 #include "common.h"
   5 #include "ralloc.h"
   6 #include "gen.h"
   7 #include "peep.h"
   8 #include "support.h"
   9
  10 typedef enum
  11   {
  12     SUB_Z80,
  13     SUB_Z180,
  14     SUB_R2K,
  15     SUB_R2KA,
  16     SUB_R3KA,
  17     SUB_SM83,
  18     SUB_TLCS90,
  19     SUB_EZ80_Z80,
  20     SUB_Z80N,
  21     SUB_R800
  22   }
  23 Z80_SUB_PORT;
  24
  25 typedef struct
  26   {
  27     Z80_SUB_PORT sub;
  28     int calleeSavesBC;
  29     int port_mode;
  30     int port_back;
  31     int reserveIY;
  32     int noOmitFramePtr;
  33     int legacyBanking;
  34     int nmosZ80;
  35   }
  36 Z80_OPTS;
  37
  38 extern Z80_OPTS z80_opts;
  39
  40 #define IS_Z80 (z80_opts.sub == SUB_Z80)
  41 #define IS_Z180 (z80_opts.sub == SUB_Z180)
  42 #define IS_R2K (z80_opts.sub == SUB_R2K)
  43 #define IS_R2KA (z80_opts.sub == SUB_R2KA)
  44 #define IS_R3KA (z80_opts.sub == SUB_R3KA)
  45 #define IS_RAB (IS_R2K || IS_R2KA || IS_R3KA)
  46 #define IS_SM83 (z80_opts.sub == SUB_SM83)
  47 #define IS_TLCS90 (z80_opts.sub == SUB_TLCS90)
  48 #define IS_EZ80_Z80 (z80_opts.sub == SUB_EZ80_Z80)
  49 #define IS_Z80N (z80_opts.sub == SUB_Z80N)
  50 #define IS_R800 (z80_opts.sub == SUB_R800)
  51 #define HAS_IYL_INST (IS_Z80N || IS_EZ80_Z80 || IS_R800 || IS_Z80 && options.allow_undoc_inst)
  52
  53 #define IY_RESERVED (z80_opts.reserveIY)
  54
  55 #define OPTRALLOC_IY !(IY_RESERVED || IS_SM83)
  56
  57 enum
  58   {
  59     ACCUSE_A = 1,
  60     ACCUSE_SCRATCH,
  61     ACCUSE_IY
  62   };
  63