sim/rl78/cpu.h

   1 /* cpu.h --- declarations for the RL78 core.
   2
   3    Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5    Contributed by Red Hat, Inc.
   6
   7    This file is part of the GNU simulators.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #ifndef SIM_RL78_CPU_H_
  24 #define SIM_RL78_CPU_H_
  25
  26 #include <stdint.h>
  27 #include <setjmp.h>
  28
  29 #include "opcode/rl78.h"
  30
  31 extern int verbose;
  32 extern int trace;
  33
  34 typedef uint8_t QI;
  35 typedef uint16_t HI;
  36 typedef uint32_t SI;
  37
  38 extern int rl78_in_gdb;
  39
  40 SI get_reg (RL78_Register);
  41 SI set_reg (RL78_Register, SI);
  42
  43 SI pc;
  44
  45
  46 extern const char * const reg_names[];
  47
  48 void init_cpu (void);
  49 void set_flags (int mask, int newbits);
  50 void set_c (int c);
  51 int  get_c (void);
  52
  53 const char *bits (int v, int b);
  54
  55 int condition_true (RL78_Condition cond_id, int val);
  56
  57 /* Instruction step return codes.
  58    Suppose one of the decode_* functions below returns a value R:
  59    - If RL78_STEPPED (R), then the single-step completed normally.
  60    - If RL78_HIT_BREAK (R), then the program hit a breakpoint.
  61    - If RL78_EXITED (R), then the program has done an 'exit' system
  62      call, and the exit code is RL78_EXIT_STATUS (R).
  63    - If RL78_STOPPED (R), then a signal (number RL78_STOP_SIG (R)) was
  64      generated.
  65
  66    For building step return codes:
  67    - RL78_MAKE_STEPPED is the return code for finishing a normal step.
  68    - RL78_MAKE_HIT_BREAK is the return code for hitting a breakpoint.
  69    - RL78_MAKE_EXITED (C) is the return code for exiting with status C.
  70    - RL78_MAKE_STOPPED (S) is the return code for stopping on signal S.  */
  71 #define RL78_MAKE_STEPPED()   (1)
  72 #define RL78_MAKE_HIT_BREAK() (2)
  73 #define RL78_MAKE_EXITED(c)   (((int) (c) << 8) + 3)
  74 #define RL78_MAKE_STOPPED(s)  (((int) (s) << 8) + 4)
  75
  76 #define RL78_STEPPED(r)       ((r) == RL78_MAKE_STEPPED ())
  77 #define RL78_HIT_BREAK(r)     ((r) == RL78_MAKE_HIT_BREAK ())
  78 #define RL78_EXITED(r)        (((r) & 0xff) == 3)
  79 #define RL78_EXIT_STATUS(r)   ((r) >> 8)
  80 #define RL78_STOPPED(r)       (((r) & 0xff) == 4)
  81 #define RL78_STOP_SIG(r)      ((r) >> 8)
  82
  83 /* The step result for the current step.  Global to allow
  84    communication between the stepping function and the system
  85    calls.  */
  86 extern int step_result;
  87
  88 extern int decode_opcode (void);
  89
  90 extern int trace_register_words;
  91 extern void trace_register_changes (void);
  92 extern void generate_access_exception (void);
  93 extern jmp_buf decode_jmp_buf;
  94
  95 extern long long total_clocks;
  96 extern int pending_clocks;
  97 extern int timer_enabled;
  98 extern void dump_counts_per_insn (const char * filename);
  99 extern unsigned int counts_per_insn[0x100000];
 100
 101 #endif