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Diffstat (limited to 'sim/m68hc11/sim-main.h')
-rw-r--r-- | sim/m68hc11/sim-main.h | 595 |
1 files changed, 0 insertions, 595 deletions
diff --git a/sim/m68hc11/sim-main.h b/sim/m68hc11/sim-main.h deleted file mode 100644 index a88c800..0000000 --- a/sim/m68hc11/sim-main.h +++ /dev/null @@ -1,595 +0,0 @@ -/* sim-main.h -- Simulator for Motorola 68HC11 & 68HC12 - Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. - Written by Stephane Carrez (stcarrez@worldnet.fr) - -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 _SIM_MAIN_H -#define _SIM_MAIN_H - -#define WITH_MODULO_MEMORY 1 -#define WITH_WATCHPOINTS 1 -#define SIM_HANDLES_LMA 1 - -#include "sim-basics.h" - -typedef address_word sim_cia; - -#include "sim-signal.h" -#include "sim-base.h" - -#include "bfd.h" - -#include "opcode/m68hc11.h" - -#include "callback.h" -#include "remote-sim.h" -#include "opcode/m68hc11.h" -#include "sim-types.h" - -typedef unsigned8 uint8; -typedef unsigned16 uint16; -typedef signed16 int16; -typedef unsigned32 uint32; -typedef signed32 int32; -typedef unsigned64 uint64; -typedef signed64 int64; - -struct _sim_cpu; - -#include "interrupts.h" -#include <setjmp.h> - -/* Specifies the level of mapping for the IO, EEprom, nvram and external - RAM. IO registers are mapped over everything and the external RAM - is last (ie, it can be hidden by everything above it in the list). */ -enum m68hc11_map_level -{ - M6811_IO_LEVEL, - M6811_EEPROM_LEVEL, - M6811_NVRAM_LEVEL, - M6811_RAM_LEVEL -}; - -enum cpu_type -{ - CPU_M6811, - CPU_M6812 -}; - -#define X_REGNUM 0 -#define D_REGNUM 1 -#define Y_REGNUM 2 -#define SP_REGNUM 3 -#define PC_REGNUM 4 -#define A_REGNUM 5 -#define B_REGNUM 6 -#define PSW_REGNUM 7 -#define Z_REGNUM 8 - -typedef struct m6811_regs { - unsigned short d; - unsigned short ix; - unsigned short iy; - unsigned short sp; - unsigned short pc; - unsigned char ccr; -} m6811_regs; - - -/* Description of 68HC11 IO registers. Such description is only provided - for the info command to display the current setting of IO registers - from GDB. */ -struct io_reg_desc -{ - int mask; - const char *short_name; - const char *long_name; -}; -typedef struct io_reg_desc io_reg_desc; - -extern void print_io_reg_desc (SIM_DESC sd, io_reg_desc *desc, int val, - int mode); -extern void print_io_byte (SIM_DESC sd, const char *name, - io_reg_desc *desc, uint8 val, uint16 addr); - - -/* List of special 68HC11&68HC12 instructions that are not handled by the - 'gencode.c' generator. These complex instructions are implemented - by 'cpu_special'. */ -enum M6811_Special -{ - /* 68HC11 instructions. */ - M6811_DAA, - M6811_EMUL_SYSCALL, - M6811_ILLEGAL, - M6811_RTI, - M6811_STOP, - M6811_SWI, - M6811_TEST, - M6811_WAI, - - /* 68HC12 instructions. */ - M6812_BGND, - M6812_CALL, - M6812_IDIVS, - M6812_EDIV, - M6812_EDIVS, - M6812_EMACS, - M6812_EMUL, - M6812_EMULS, - M6812_ETBL, - M6812_MEM, - M6812_REV, - M6812_REVW, - M6812_RTC, - M6812_RTI, - M6812_WAV -}; - -#define CPU_POP 1 -#define CPU_PUSH 2 - -#define M6811_MAX_PORTS (0x03f+1) -#define M6812_MAX_PORTS (0x3ff+1) -#define MAX_PORTS (M6812_MAX_PORTS) - -/* Tentative to keep track of the stack frame. - The frame is updated each time a call or a return are made. - We also have to take into account changes of stack pointer - (either thread switch or longjmp). */ -struct cpu_frame -{ - struct cpu_frame *up; - uint16 pc; - uint16 sp_low; - uint16 sp_high; -}; - -/* Represents a list of frames (or a thread). */ -struct cpu_frame_list -{ - struct cpu_frame_list *next; - struct cpu_frame_list *prev; - struct cpu_frame *frame; -}; - -struct _sim_cpu; - -typedef void (* cpu_interp) (struct _sim_cpu*); - -struct _sim_cpu { - /* CPU registers. */ - struct m6811_regs cpu_regs; - - /* CPU interrupts. */ - struct interrupts cpu_interrupts; - - struct cpu_frame_list *cpu_frames; - struct cpu_frame_list *cpu_current_frame; - int cpu_need_update_frame; - - /* Pointer to the interpretor routine. */ - cpu_interp cpu_interpretor; - - /* Pointer to the architecture currently configured in the simulator. */ - const struct bfd_arch_info *cpu_configured_arch; - - /* CPU absolute cycle time. The cycle time is updated after - each instruction, by the number of cycles taken by the instruction. - It is cleared only when reset occurs. */ - signed64 cpu_absolute_cycle; - - /* Number of cycles to increment after the current instruction. - This is also the number of ticks for the generic event scheduler. */ - uint8 cpu_current_cycle; - int cpu_emul_syscall; - int cpu_is_initialized; - int cpu_running; - int cpu_check_memory; - int cpu_stop_on_interrupt; - - /* When this is set, start execution of program at address specified - in the ELF header. This is used for testing some programs that do not - have an interrupt table linked with them. Programs created during the - GCC validation are like this. A normal 68HC11 does not behave like - this (unless there is some OS or downloadable feature). */ - int cpu_use_elf_start; - - /* The starting address specified in ELF header. */ - int cpu_elf_start; - - uint16 cpu_insn_pc; - - /* CPU frequency. This is the quartz frequency. It is divided by 4 to - get the cycle time. This is used for the timer rate and for the baud - rate generation. */ - unsigned long cpu_frequency; - - /* The mode in which the CPU is configured (MODA and MODB pins). */ - unsigned int cpu_mode; - - /* The cpu being configured. */ - enum cpu_type cpu_type; - - /* Initial value of the CONFIG register. */ - uint8 cpu_config; - uint8 cpu_use_local_config; - - uint8 ios[MAX_PORTS]; - - /* ... base type ... */ - sim_cpu_base base; -}; - -/* Returns the cpu absolute cycle time (A virtual counter incremented - at each 68HC11 E clock). */ -#define cpu_current_cycle(PROC) ((PROC)->cpu_absolute_cycle) -#define cpu_add_cycles(PROC,T) ((PROC)->cpu_current_cycle += (signed64) (T)) -#define cpu_is_running(PROC) ((PROC)->cpu_running) - -/* Get the IO/RAM base addresses depending on the M6811_INIT register. */ -#define cpu_get_io_base(PROC) \ - (((uint16)(((PROC)->ios[M6811_INIT]) & 0x0F))<<12) -#define cpu_get_reg_base(PROC) \ - (((uint16)(((PROC)->ios[M6811_INIT]) & 0xF0))<<8) - -/* Returns the different CPU registers. */ -#define cpu_get_ccr(PROC) ((PROC)->cpu_regs.ccr) -#define cpu_get_pc(PROC) ((PROC)->cpu_regs.pc) -#define cpu_get_d(PROC) ((PROC)->cpu_regs.d) -#define cpu_get_x(PROC) ((PROC)->cpu_regs.ix) -#define cpu_get_y(PROC) ((PROC)->cpu_regs.iy) -#define cpu_get_sp(PROC) ((PROC)->cpu_regs.sp) -#define cpu_get_a(PROC) ((PROC->cpu_regs.d >> 8) & 0x0FF) -#define cpu_get_b(PROC) ((PROC->cpu_regs.d) & 0x0FF) - -/* 68HC12 specific and Motorola internal registers. */ -#define cpu_get_tmp3(PROC) (0) -#define cpu_get_tmp2(PROC) (0) - -#define cpu_set_d(PROC,VAL) (((PROC)->cpu_regs.d) = (VAL)) -#define cpu_set_x(PROC,VAL) (((PROC)->cpu_regs.ix) = (VAL)) -#define cpu_set_y(PROC,VAL) (((PROC)->cpu_regs.iy) = (VAL)) - -/* 68HC12 specific and Motorola internal registers. */ -#define cpu_set_tmp3(PROC,VAL) (0) -#define cpu_set_tmp2(PROC,VAL) (0) - -#if 0 -/* This is a function in m68hc11_sim.c to keep track of the frame. */ -#define cpu_set_sp(PROC,VAL) (((PROC)->cpu_regs.sp) = (VAL)) -#endif - -#define cpu_set_pc(PROC,VAL) (((PROC)->cpu_regs.pc) = (VAL)) - -#define cpu_set_a(PROC,VAL) \ - cpu_set_d(PROC,((VAL) << 8) | cpu_get_b(PROC)) -#define cpu_set_b(PROC,VAL) \ - cpu_set_d(PROC,((cpu_get_a(PROC)) << 8)|(VAL & 0x0FF)) - -#define cpu_set_ccr(PROC,VAL) ((PROC)->cpu_regs.ccr = (VAL)) -#define cpu_get_ccr_H(PROC) ((cpu_get_ccr(PROC) & M6811_H_BIT) ? 1: 0) -#define cpu_get_ccr_X(PROC) ((cpu_get_ccr(PROC) & M6811_X_BIT) ? 1: 0) -#define cpu_get_ccr_S(PROC) ((cpu_get_ccr(PROC) & M6811_S_BIT) ? 1: 0) -#define cpu_get_ccr_N(PROC) ((cpu_get_ccr(PROC) & M6811_N_BIT) ? 1: 0) -#define cpu_get_ccr_V(PROC) ((cpu_get_ccr(PROC) & M6811_V_BIT) ? 1: 0) -#define cpu_get_ccr_C(PROC) ((cpu_get_ccr(PROC) & M6811_C_BIT) ? 1: 0) -#define cpu_get_ccr_Z(PROC) ((cpu_get_ccr(PROC) & M6811_Z_BIT) ? 1: 0) -#define cpu_get_ccr_I(PROC) ((cpu_get_ccr(PROC) & M6811_I_BIT) ? 1: 0) - -#define cpu_set_ccr_flag(S,B,V) \ -cpu_set_ccr(S,(cpu_get_ccr(S) & ~(B)) | ((V) ? B : 0)) - -#define cpu_set_ccr_H(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_H_BIT, VAL) -#define cpu_set_ccr_X(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_X_BIT, VAL) -#define cpu_set_ccr_S(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_S_BIT, VAL) -#define cpu_set_ccr_N(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_N_BIT, VAL) -#define cpu_set_ccr_V(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_V_BIT, VAL) -#define cpu_set_ccr_C(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_C_BIT, VAL) -#define cpu_set_ccr_Z(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_Z_BIT, VAL) -#define cpu_set_ccr_I(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_I_BIT, VAL) - -#undef inline -#define inline static __inline__ - -extern void cpu_memory_exception (struct _sim_cpu *proc, - SIM_SIGNAL excep, - uint16 addr, - const char *message); - -inline uint8 -memory_read8 (sim_cpu *cpu, uint16 addr) -{ - uint8 val; - - if (sim_core_read_buffer (CPU_STATE (cpu), cpu, 0, &val, addr, 1) != 1) - { - cpu_memory_exception (cpu, SIM_SIGSEGV, addr, - "Read error"); - } - return val; -} - -inline void -memory_write8 (sim_cpu *cpu, uint16 addr, uint8 val) -{ - if (sim_core_write_buffer (CPU_STATE (cpu), cpu, 0, &val, addr, 1) != 1) - { - cpu_memory_exception (cpu, SIM_SIGSEGV, addr, - "Write error"); - } -} - -inline uint16 -memory_read16 (sim_cpu *cpu, uint16 addr) -{ - uint8 b[2]; - - if (sim_core_read_buffer (CPU_STATE (cpu), cpu, 0, b, addr, 2) != 2) - { - cpu_memory_exception (cpu, SIM_SIGSEGV, addr, - "Read error"); - } - return (((uint16) (b[0])) << 8) | ((uint16) b[1]); -} - -inline void -memory_write16 (sim_cpu *cpu, uint16 addr, uint16 val) -{ - uint8 b[2]; - - b[0] = val >> 8; - b[1] = val; - if (sim_core_write_buffer (CPU_STATE (cpu), cpu, 0, b, addr, 2) != 2) - { - cpu_memory_exception (cpu, SIM_SIGSEGV, addr, - "Write error"); - } -} -extern void -cpu_ccr_update_tst8 (sim_cpu *proc, uint8 val); - - inline void -cpu_ccr_update_tst16 (sim_cpu *proc, uint16 val) -{ - cpu_set_ccr_V (proc, 0); - cpu_set_ccr_N (proc, val & 0x8000 ? 1 : 0); - cpu_set_ccr_Z (proc, val == 0 ? 1 : 0); -} - - inline void -cpu_ccr_update_shift8 (sim_cpu *proc, uint8 val) -{ - cpu_set_ccr_N (proc, val & 0x80 ? 1 : 0); - cpu_set_ccr_Z (proc, val == 0 ? 1 : 0); - cpu_set_ccr_V (proc, cpu_get_ccr_N (proc) ^ cpu_get_ccr_C (proc)); -} - - inline void -cpu_ccr_update_shift16 (sim_cpu *proc, uint16 val) -{ - cpu_set_ccr_N (proc, val & 0x8000 ? 1 : 0); - cpu_set_ccr_Z (proc, val == 0 ? 1 : 0); - cpu_set_ccr_V (proc, cpu_get_ccr_N (proc) ^ cpu_get_ccr_C (proc)); -} - -inline void -cpu_ccr_update_add8 (sim_cpu *proc, uint8 r, uint8 a, uint8 b) -{ - cpu_set_ccr_C (proc, ((a & b) | (b & ~r) | (a & ~r)) & 0x80 ? 1 : 0); - cpu_set_ccr_V (proc, ((a & b & ~r) | (~a & ~b & r)) & 0x80 ? 1 : 0); - cpu_set_ccr_Z (proc, r == 0); - cpu_set_ccr_N (proc, r & 0x80 ? 1 : 0); -} - - -inline void -cpu_ccr_update_sub8 (sim_cpu *proc, uint8 r, uint8 a, uint8 b) -{ - cpu_set_ccr_C (proc, ((~a & b) | (b & r) | (~a & r)) & 0x80 ? 1 : 0); - cpu_set_ccr_V (proc, ((a & ~b & ~r) | (~a & b & r)) & 0x80 ? 1 : 0); - cpu_set_ccr_Z (proc, r == 0); - cpu_set_ccr_N (proc, r & 0x80 ? 1 : 0); -} - -inline void -cpu_ccr_update_add16 (sim_cpu *proc, uint16 r, uint16 a, uint16 b) -{ - cpu_set_ccr_C (proc, ((a & b) | (b & ~r) | (a & ~r)) & 0x8000 ? 1 : 0); - cpu_set_ccr_V (proc, ((a & b & ~r) | (~a & ~b & r)) & 0x8000 ? 1 : 0); - cpu_set_ccr_Z (proc, r == 0); - cpu_set_ccr_N (proc, r & 0x8000 ? 1 : 0); -} - -inline void -cpu_ccr_update_sub16 (sim_cpu *proc, uint16 r, uint16 a, uint16 b) -{ - cpu_set_ccr_C (proc, ((~a & b) | (b & r) | (~a & r)) & 0x8000 ? 1 : 0); - cpu_set_ccr_V (proc, ((a & ~b & ~r) | (~a & b & r)) & 0x8000 ? 1 : 0); - cpu_set_ccr_Z (proc, r == 0); - cpu_set_ccr_N (proc, r & 0x8000 ? 1 : 0); -} - -/* Push and pop instructions for 68HC11 (next-available stack mode). */ -inline void -cpu_m68hc11_push_uint8 (sim_cpu *proc, uint8 val) -{ - uint16 addr = proc->cpu_regs.sp; - - memory_write8 (proc, addr, val); - proc->cpu_regs.sp = addr - 1; - proc->cpu_need_update_frame |= CPU_PUSH; -} - -inline void -cpu_m68hc11_push_uint16 (sim_cpu *proc, uint16 val) -{ - uint16 addr = proc->cpu_regs.sp - 1; - - memory_write16 (proc, addr, val); - proc->cpu_regs.sp = addr - 1; - proc->cpu_need_update_frame |= CPU_PUSH; -} - -inline uint8 -cpu_m68hc11_pop_uint8 (sim_cpu *proc) -{ - uint16 addr = proc->cpu_regs.sp; - uint8 val; - - val = memory_read8 (proc, addr + 1); - proc->cpu_regs.sp = addr + 1; - proc->cpu_need_update_frame |= CPU_POP; - return val; -} - -inline uint16 -cpu_m68hc11_pop_uint16 (sim_cpu *proc) -{ - uint16 addr = proc->cpu_regs.sp; - uint16 val; - - val = memory_read16 (proc, addr + 1); - proc->cpu_regs.sp = addr + 2; - proc->cpu_need_update_frame |= CPU_POP; - return val; -} - -/* Push and pop instructions for 68HC12 (last-used stack mode). */ -inline void -cpu_m68hc12_push_uint8 (sim_cpu *proc, uint8 val) -{ - uint16 addr = proc->cpu_regs.sp; - - addr --; - memory_write8 (proc, addr, val); - proc->cpu_regs.sp = addr; - proc->cpu_need_update_frame |= CPU_PUSH; -} - -inline void -cpu_m68hc12_push_uint16 (sim_cpu *proc, uint16 val) -{ - uint16 addr = proc->cpu_regs.sp; - - addr -= 2; - memory_write16 (proc, addr, val); - proc->cpu_regs.sp = addr; - proc->cpu_need_update_frame |= CPU_PUSH; -} - -inline uint8 -cpu_m68hc12_pop_uint8 (sim_cpu *proc) -{ - uint16 addr = proc->cpu_regs.sp; - uint8 val; - - val = memory_read8 (proc, addr); - proc->cpu_regs.sp = addr + 1; - proc->cpu_need_update_frame |= CPU_POP; - return val; -} - -inline uint16 -cpu_m68hc12_pop_uint16 (sim_cpu *proc) -{ - uint16 addr = proc->cpu_regs.sp; - uint16 val; - - val = memory_read16 (proc, addr); - proc->cpu_regs.sp = addr + 2; - proc->cpu_need_update_frame |= CPU_POP; - return val; -} - -/* Fetch a 8/16 bit value and update the PC. */ -inline uint8 -cpu_fetch8 (sim_cpu *proc) -{ - uint16 addr = proc->cpu_regs.pc; - uint8 val; - - val = memory_read8 (proc, addr); - proc->cpu_regs.pc = addr + 1; - return val; -} - -inline uint16 -cpu_fetch16 (sim_cpu *proc) -{ - uint16 addr = proc->cpu_regs.pc; - uint16 val; - - val = memory_read16 (proc, addr); - proc->cpu_regs.pc = addr + 2; - return val; -} - -extern void cpu_call (sim_cpu* proc, uint16 addr); -extern void cpu_exg (sim_cpu* proc, uint8 code); -extern void cpu_dbcc (sim_cpu* proc); -extern void cpu_special (sim_cpu *proc, enum M6811_Special special); -extern void cpu_move8 (sim_cpu *proc, uint8 op); -extern void cpu_move16 (sim_cpu *proc, uint8 op); - -extern uint16 cpu_fetch_relbranch (sim_cpu *proc); -extern uint16 cpu_fetch_relbranch16 (sim_cpu *proc); -extern void cpu_push_all (sim_cpu *proc); -extern void cpu_single_step (sim_cpu *proc); - -extern void cpu_info (SIM_DESC sd, sim_cpu *proc); - -extern int cpu_initialize (SIM_DESC sd, sim_cpu *cpu); - -extern void cpu_print_frame (SIM_DESC sd, sim_cpu *cpu); -extern void cpu_set_sp (sim_cpu *cpu, uint16 val); -extern uint16 cpu_frame_reg (sim_cpu *cpu, uint16 rn); -extern int cpu_reset (sim_cpu *cpu); -extern int cpu_restart (sim_cpu *cpu); -extern void sim_memory_error (sim_cpu *cpu, SIM_SIGNAL excep, - uint16 addr, const char *message, ...); -extern void emul_os (int op, sim_cpu *cpu); -extern void cpu_interp_m6811 (sim_cpu *cpu); -extern void cpu_interp_m6812 (sim_cpu *cpu); - -/* The current state of the processor; registers, memory, etc. */ - -#define CIA_GET(CPU) (cpu_get_pc (CPU)) -#define CIA_SET(CPU,VAL) (cpu_set_pc ((CPU), (VAL))) - -#if (WITH_SMP) -#define STATE_CPU(sd,n) (&(sd)->cpu[n]) -#else -#define STATE_CPU(sd,n) (&(sd)->cpu[0]) -#endif - -struct sim_state { - sim_cpu cpu[MAX_NR_PROCESSORS]; - device *devices; - sim_state_base base; -}; - -extern void sim_set_profile (int n); -extern void sim_set_profile_size (int n); -extern void sim_board_reset (SIM_DESC sd); - -extern const char *cycle_to_string (sim_cpu *cpu, signed64 t); - -#endif - - |