/* Mitsubishi Electric Corp. D30V Simulator. Copyright (C) 1997, Free Software Foundation, Inc. Contributed by Cygnus Support. This file is part of GDB, the GNU debugger. 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 2, 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _CPU_H_ #define _CPU_H_ enum { NR_GENERAL_PURPOSE_REGISTERS = 64, NR_CONTROL_REGISTERS = 64, NR_ACCUMULATORS = 2, STACK_POINTER_GPR = 63, NR_STACK_POINTERS = 2, }; enum { processor_status_word_cr = 0, backup_processor_status_word_cr = 1, program_counter_cr = 2, backup_program_counter_cr = 3, debug_backup_processor_status_word_cr = 4, debug_backup_program_counter_cr = 5, reserved_6_cr = 6, repeat_count_cr = 7, repeat_start_address_cr = 8, repeat_end_address_cr = 9, modulo_start_address_cr = 10, modulo_end_address_cr = 11, instruction_break_address_cr = 14, eit_vector_base_cr = 15, }; enum { PSW_SM = 0, PSW_EA = 2, PSW_DB = 3, PSW_DS = 4, PSW_IE = 5, PSW_RP = 6, PSW_MD = 7, PSW_F0 = 17, PSW_F1 = 19, PSW_F2 = 21, PSW_F3 = 23, PSW_S = 25, PSW_V = 27, PSW_VA = 29, PSW_C = 31, }; /* aliases for PSW flag numbers (F0..F7) */ enum { PSW_S_FLAG = 4, }; typedef struct _registers { unsigned32 general_purpose[NR_GENERAL_PURPOSE_REGISTERS]; /* keep track of the stack pointer */ unsigned32 sp[NR_STACK_POINTERS]; /* swap with SP */ unsigned32 current_sp; unsigned32 control[NR_CONTROL_REGISTERS]; unsigned64 accumulator[NR_ACCUMULATORS]; } registers; typedef enum _cpu_units { memory_unit, integer_unit, any_unit, } cpu_units; /* In order to support parallel instructions, which one instruction can be writing to a register that is used as input to another, queue up the writes to the end of the instruction boundaries. */ #define MAX_WRITE32 16 #define MAX_WRITE64 2 struct _write32 { int num; /* # of 32-bit writes queued up */ unsigned32 value[MAX_WRITE32]; /* value to write */ unsigned32 mask[MAX_WRITE32]; /* mask to use */ unsigned32 *ptr[MAX_WRITE32]; /* address to write to */ }; struct _write64 { int num; /* # of 64-bit writes queued up */ unsigned64 value[MAX_WRITE64]; /* value to write */ unsigned64 *ptr[MAX_WRITE64]; /* address to write to */ }; struct _sim_cpu { cpu_units unit; registers regs; sim_cpu_base base; int trace_call_p; /* Whether to do call tracing. */ int trace_trap_p; /* If unknown traps dump out the regs */ int trace_action; /* trace bits at end of instructions */ int left_kills_right_p; /* left insn kills insn in right slot of -> */ int did_trap; /* we did a trap & need to finish it */ struct _write32 write32; /* queued up 32-bit writes */ struct _write64 write64; /* queued up 64-bit writes */ }; #define PC (STATE_CPU (sd, 0)->regs.control[program_counter_cr]) #define PSW (STATE_CPU (sd, 0)->regs.control[processor_status_word_cr]) #define PSWL (*AL2_4(&PSW)) #define PSWH (*AH2_4(&PSW)) #define DPSW (STATE_CPU (sd, 0)->regs.control[debug_backup_processor_status_word_cr]) #define DPC (STATE_CPU (sd, 0)->regs.control[debug_backup_program_counter_cr]) #define bPC (STATE_CPU (sd, 0)->regs.control[backup_program_counter_cr]) #define bPSW (STATE_CPU (sd, 0)->regs.control[backup_processor_status_word_cr]) #define RPT_C (STATE_CPU (sd, 0)->regs.control[repeat_count_cr]) #define RPT_S (STATE_CPU (sd, 0)->regs.control[repeat_start_address_cr]) #define RPT_E (STATE_CPU (sd, 0)->regs.control[repeat_end_address_cr]) #define MOD_S (STATE_CPU (sd, 0)->regs.control[modulo_start_address_cr]) #define MOD_E (STATE_CPU (sd, 0)->regs.control[modulo_end_address_cr]) #define IBA (STATE_CPU (sd, 0)->regs.control[instruction_break_address_cr]) #define EIT_VB (STATE_CPU (sd, 0)->regs.control[eit_vector_base_cr]) #define GPR (STATE_CPU (sd, 0)->regs.general_purpose) #define GPR_SET(N,VAL) (GPR[(N)] = (VAL)) #define ACC (STATE_CPU (sd, 0)->regs.accumulator) #define CREG (STATE_CPU (sd, 0)->regs.control) #define SP (GPR[STACK_POINTER_GPR]) #define TRACE_CALL_P (STATE_CPU (sd, 0)->trace_call_p) #define TRACE_TRAP_P (STATE_CPU (sd, 0)->trace_trap_p) #define TRACE_ACTION (STATE_CPU (sd, 0)->trace_action) #define TRACE_ACTION_CALL 0x00000001 /* call occurred */ #define TRACE_ACTION_RETURN 0x00000002 /* return occurred */ #define WRITE32 (STATE_CPU (sd, 0)->write32) #define WRITE32_NUM (WRITE32.num) #define WRITE32_PTR(N) (WRITE32.ptr[N]) #define WRITE32_MASK(N) (WRITE32.mask[N]) #define WRITE32_VALUE(N) (WRITE32.value[N]) #define WRITE32_QUEUE(PTR, VALUE) WRITE32_QUEUE_MASK (PTR, VALUE, 0xffffffff) #define WRITE32_QUEUE_MASK(PTR, VALUE, MASK) \ do { \ int _num = WRITE32_NUM; \ if (_num >= MAX_WRITE32) \ sim_engine_abort (sd, STATE_CPU (sd, 0), cia, \ "Too many queued 32-bit writes"); \ WRITE32_PTR(_num) = PTR; \ WRITE32_VALUE(_num) = VALUE; \ WRITE32_MASK(_num) = MASK; \ WRITE32_NUM = _num+1; \ } while (0) #define DID_TRAP (STATE_CPU (sd, 0)->did_trap) #define WRITE64 (STATE_CPU (sd, 0)->write64) #define WRITE64_NUM (WRITE64.num) #define WRITE64_PTR(N) (WRITE64.ptr[N]) #define WRITE64_VALUE(N) (WRITE64.value[N]) #define WRITE64_QUEUE(PTR, VALUE) \ do { \ int _num = WRITE64_NUM; \ if (_num >= MAX_WRITE64) \ sim_engine_abort (sd, STATE_CPU (sd, 0), cia, \ "Too many queued 64-bit writes"); \ WRITE64_PTR(_num) = PTR; \ WRITE64_VALUE(_num) = VALUE; \ WRITE64_NUM = _num+1; \ } while (0) #define DPSW_VALID 0xbf005555 #define PSW_VALID 0xb7005555 #define EIT_VALID 0xfffff000 /* From page 7-4 of D30V/MPEG arch. manual */ #define EIT_VB_DEFAULT 0xfffff000 /* Value of the EIT_VB register after reset */ /* Verify that the instruction is in the correct slot */ #define IS_WRONG_SLOT is_wrong_slot(sd, cia, MY_INDEX) extern int is_wrong_slot (SIM_DESC sd, address_word cia, itable_index index); #define IS_CONDITION_OK is_condition_ok(sd, cia, CCC) extern int is_condition_ok (SIM_DESC sd, address_word cia, int cond); #define SIM_HAVE_BREAKPOINTS /* Turn on internal breakpoint module */ /* Internal breakpoint instruction is syscall 5 */ #define SIM_BREAKPOINT {0x0e, 0x00, 0x00, 0x05} #define SIM_BREAKPOINT_SIZE (4) /* Call occurred */ extern void call_occurred (SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word nia); /* Return occurred */ extern void return_occurred (SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word nia); /* Whether to do call tracing. */ extern int d30v_call_trace_p; /* Read/write functions for system call interface. */ extern int d30v_read_mem (host_callback *cb, struct cb_syscall *sc, unsigned long taddr, char *buf, int bytes); extern int d30v_write_mem (host_callback *cb, struct cb_syscall *sc, unsigned long taddr, const char *buf, int bytes); #endif /* _CPU_H_ */