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Diffstat (limited to 'sim/rl78/cpu.h')
-rw-r--r-- | sim/rl78/cpu.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/sim/rl78/cpu.h b/sim/rl78/cpu.h new file mode 100644 index 0000000..057f625 --- /dev/null +++ b/sim/rl78/cpu.h @@ -0,0 +1,101 @@ +/* cpu.h --- declarations for the RL78 core. + + Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011 + Free Software Foundation, Inc. + Contributed by Red Hat, Inc. + + This file is part of the GNU simulators. + + This program 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 3 of the License, or + (at your option) any later version. + + This program 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 this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef SIM_RL78_CPU_H_ +#define SIM_RL78_CPU_H_ + +#include <stdint.h> +#include <setjmp.h> + +#include "opcode/rl78.h" + +extern int verbose; +extern int trace; + +typedef uint8_t QI; +typedef uint16_t HI; +typedef uint32_t SI; + +extern int rl78_in_gdb; + +SI get_reg (RL78_Register); +SI set_reg (RL78_Register, SI); + +SI pc; + + +extern const char * const reg_names[]; + +void init_cpu (void); +void set_flags (int mask, int newbits); +void set_c (int c); +int get_c (void); + +const char *bits (int v, int b); + +int condition_true (RL78_Condition cond_id, int val); + +/* Instruction step return codes. + Suppose one of the decode_* functions below returns a value R: + - If RL78_STEPPED (R), then the single-step completed normally. + - If RL78_HIT_BREAK (R), then the program hit a breakpoint. + - If RL78_EXITED (R), then the program has done an 'exit' system + call, and the exit code is RL78_EXIT_STATUS (R). + - If RL78_STOPPED (R), then a signal (number RL78_STOP_SIG (R)) was + generated. + + For building step return codes: + - RL78_MAKE_STEPPED is the return code for finishing a normal step. + - RL78_MAKE_HIT_BREAK is the return code for hitting a breakpoint. + - RL78_MAKE_EXITED (C) is the return code for exiting with status C. + - RL78_MAKE_STOPPED (S) is the return code for stopping on signal S. */ +#define RL78_MAKE_STEPPED() (1) +#define RL78_MAKE_HIT_BREAK() (2) +#define RL78_MAKE_EXITED(c) (((int) (c) << 8) + 3) +#define RL78_MAKE_STOPPED(s) (((int) (s) << 8) + 4) + +#define RL78_STEPPED(r) ((r) == RL78_MAKE_STEPPED ()) +#define RL78_HIT_BREAK(r) ((r) == RL78_MAKE_HIT_BREAK ()) +#define RL78_EXITED(r) (((r) & 0xff) == 3) +#define RL78_EXIT_STATUS(r) ((r) >> 8) +#define RL78_STOPPED(r) (((r) & 0xff) == 4) +#define RL78_STOP_SIG(r) ((r) >> 8) + +/* The step result for the current step. Global to allow + communication between the stepping function and the system + calls. */ +extern int step_result; + +extern int decode_opcode (void); + +extern int trace_register_words; +extern void trace_register_changes (void); +extern void generate_access_exception (void); +extern jmp_buf decode_jmp_buf; + +extern long long total_clocks; +extern int pending_clocks; +extern int timer_enabled; +extern void dump_counts_per_insn (const char * filename); +extern unsigned int counts_per_insn[0x100000]; + +#endif |