2006-01-23 23:10:41 +01:00
|
|
|
/* cpu.h --- declarations for the M32C core.
|
|
|
|
|
2008-01-01 23:53:26 +01:00
|
|
|
Copyright (C) 2005, 2007, 2008 Free Software Foundation, Inc.
|
2006-01-23 23:10:41 +01:00
|
|
|
Contributed by Red Hat, Inc.
|
|
|
|
|
|
|
|
This file is part of the GNU simulators.
|
|
|
|
|
2007-08-24 16:30:15 +02:00
|
|
|
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.
|
2006-01-23 23:10:41 +01:00
|
|
|
|
2007-08-24 16:30:15 +02:00
|
|
|
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.
|
2006-01-23 23:10:41 +01:00
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
2007-08-24 16:30:15 +02:00
|
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
2006-01-23 23:10:41 +01:00
|
|
|
|
|
|
|
|
|
|
|
extern int verbose;
|
|
|
|
extern int trace;
|
|
|
|
extern int enable_counting;
|
|
|
|
|
2008-06-06 21:18:15 +02:00
|
|
|
extern int in_gdb;
|
|
|
|
|
2006-01-23 23:10:41 +01:00
|
|
|
typedef unsigned char QI;
|
|
|
|
typedef unsigned short HI;
|
|
|
|
typedef unsigned long SI;
|
|
|
|
typedef unsigned long long DI;
|
|
|
|
|
|
|
|
#define CPU_R8C 0x11
|
|
|
|
#define CPU_M16C 0x12
|
|
|
|
#define CPU_M32CM 0x23
|
|
|
|
#define CPU_M32C 0x24
|
|
|
|
extern int m32c_cpu;
|
|
|
|
void m32c_set_cpu (int cpu);
|
|
|
|
|
|
|
|
#define A16 (m32c_cpu & 0x10)
|
|
|
|
#define A24 (m32c_cpu & 0x20)
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
{
|
|
|
|
HI r_r0;
|
|
|
|
HI r_r2;
|
|
|
|
HI r_r1;
|
|
|
|
HI r_r3;
|
|
|
|
SI r_a0;
|
|
|
|
SI r_a1;
|
|
|
|
SI r_sb;
|
|
|
|
SI r_fb;
|
|
|
|
} reg_bank_type;
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
{
|
|
|
|
reg_bank_type r[2];
|
|
|
|
QI r_intbh;
|
|
|
|
HI r_intbl;
|
|
|
|
SI r_usp;
|
|
|
|
SI r_isp;
|
|
|
|
SI r_pc;
|
|
|
|
HI r_flags;
|
|
|
|
} regs_type;
|
|
|
|
|
|
|
|
extern regs_type regs;
|
|
|
|
extern int addr_mask;
|
|
|
|
extern int membus_mask;
|
|
|
|
|
|
|
|
#define FLAGBIT_C 0x0001
|
|
|
|
#define FLAGBIT_D 0x0002
|
|
|
|
#define FLAGBIT_Z 0x0004
|
|
|
|
#define FLAGBIT_S 0x0008
|
|
|
|
#define FLAGBIT_B 0x0010
|
|
|
|
#define FLAGBIT_O 0x0020
|
|
|
|
#define FLAGBIT_I 0x0040
|
|
|
|
#define FLAGBIT_U 0x0080
|
|
|
|
|
|
|
|
#define REG_BANK (regs.r_flags & FLAG_B ? 1 : 0)
|
|
|
|
|
|
|
|
typedef enum
|
|
|
|
{
|
|
|
|
mem,
|
|
|
|
r0, r0h, r0l,
|
|
|
|
r1, r1h, r1l,
|
|
|
|
r2, r2r0,
|
|
|
|
r3, r3r1,
|
|
|
|
r3r1r2r0,
|
|
|
|
r3r2r1r0,
|
|
|
|
a0,
|
|
|
|
a1, a1a0,
|
|
|
|
sb, fb,
|
|
|
|
intb, intbl, intbh,
|
|
|
|
sp, usp, isp, pc, flags,
|
|
|
|
num_regs
|
|
|
|
} reg_id;
|
|
|
|
|
|
|
|
extern char *reg_names[];
|
|
|
|
extern int reg_bytes[];
|
|
|
|
|
|
|
|
extern unsigned int b2mask[];
|
|
|
|
extern unsigned int b2signbit[];
|
|
|
|
extern int b2maxsigned[];
|
|
|
|
extern int b2minsigned[];
|
|
|
|
|
2008-06-06 21:18:15 +02:00
|
|
|
/* address of the opcode that just decoded, and thus caused the
|
|
|
|
exception. */
|
|
|
|
extern int m32c_opcode_pc;
|
|
|
|
|
2006-01-23 23:10:41 +01:00
|
|
|
void init_regs (void);
|
|
|
|
void stack_heap_stats (void);
|
|
|
|
void set_pointer_width (int bytes);
|
|
|
|
unsigned int get_reg (reg_id id);
|
|
|
|
DI get_reg_ll (reg_id id);
|
|
|
|
void put_reg (reg_id id, unsigned int value);
|
|
|
|
void put_reg_ll (reg_id id, DI value);
|
|
|
|
|
|
|
|
void set_flags (int mask, int newbits);
|
|
|
|
void set_oszc (int value, int bytes, int c);
|
|
|
|
void set_szc (int value, int bytes, int c);
|
|
|
|
void set_osz (int value, int bytes);
|
|
|
|
void set_sz (int value, int bytes);
|
|
|
|
void set_zc (int z, int c);
|
|
|
|
void set_c (int c);
|
|
|
|
|
|
|
|
const char *bits (int v, int b);
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
{
|
|
|
|
QI bytes;
|
|
|
|
QI mem;
|
|
|
|
HI mask;
|
|
|
|
union
|
|
|
|
{
|
|
|
|
unsigned int addr;
|
|
|
|
reg_id reg;
|
|
|
|
} u;
|
|
|
|
} srcdest;
|
|
|
|
|
|
|
|
void decode_indirect (int src_indirect, int dest_indirect);
|
|
|
|
void decode_index (int src_addend, int dest_addend);
|
|
|
|
|
|
|
|
/* r8c */
|
|
|
|
srcdest decode_srcdest4 (int destcode, int bw);
|
|
|
|
srcdest decode_dest3 (int destcode, int bw);
|
|
|
|
srcdest decode_src2 (int srccode, int bw, int d);
|
|
|
|
srcdest decode_dest1 (int destcode, int bw);
|
|
|
|
srcdest decode_jumpdest (int destcode, int w);
|
|
|
|
srcdest decode_cr (int crcode);
|
|
|
|
srcdest decode_cr_b (int crcode, int bank);
|
|
|
|
#define CR_B_DCT0 0
|
|
|
|
#define CR_B_INTB 1
|
|
|
|
#define CR_B_DMA0 2
|
|
|
|
|
|
|
|
/* m32c */
|
|
|
|
srcdest decode_dest23 (int ddd, int dd, int bytes);
|
|
|
|
srcdest decode_src23 (int sss, int ss, int bytes);
|
|
|
|
srcdest decode_src3 (int sss, int bytes);
|
|
|
|
srcdest decode_dest2 (int dd, int bytes);
|
|
|
|
|
|
|
|
srcdest widen_sd (srcdest sd);
|
|
|
|
srcdest reg_sd (reg_id reg);
|
|
|
|
|
|
|
|
/* Mask has the one appropriate bit set. */
|
|
|
|
srcdest decode_bit (int destcode);
|
|
|
|
srcdest decode_bit11 (int op0);
|
|
|
|
int get_bit (srcdest sd);
|
|
|
|
void put_bit (srcdest sd, int val);
|
|
|
|
int get_bit2 (srcdest sd, int bit);
|
|
|
|
void put_bit2 (srcdest sd, int bit, int val);
|
|
|
|
|
|
|
|
int get_src (srcdest sd);
|
|
|
|
void put_dest (srcdest sd, int value);
|
|
|
|
|
|
|
|
int condition_true (int cond_id);
|
|
|
|
|
|
|
|
#define FLAG(f) (regs.r_flags & f ? 1 : 0)
|
|
|
|
#define FLAG_C FLAG(FLAGBIT_C)
|
|
|
|
#define FLAG_D FLAG(FLAGBIT_D)
|
|
|
|
#define FLAG_Z FLAG(FLAGBIT_Z)
|
|
|
|
#define FLAG_S FLAG(FLAGBIT_S)
|
|
|
|
#define FLAG_B FLAG(FLAGBIT_B)
|
|
|
|
#define FLAG_O FLAG(FLAGBIT_O)
|
|
|
|
#define FLAG_I FLAG(FLAGBIT_I)
|
|
|
|
#define FLAG_U FLAG(FLAGBIT_U)
|
|
|
|
|
|
|
|
/* Instruction step return codes.
|
|
|
|
Suppose one of the decode_* functions below returns a value R:
|
|
|
|
- If M32C_STEPPED (R), then the single-step completed normally.
|
|
|
|
- If M32C_HIT_BREAK (R), then the program hit a breakpoint.
|
|
|
|
- If M32C_EXITED (R), then the program has done an 'exit' system
|
|
|
|
call, and the exit code is M32C_EXIT_STATUS (R).
|
|
|
|
- If M32C_STOPPED (R), then a signal (number M32C_STOP_SIG (R)) was
|
|
|
|
generated.
|
|
|
|
|
|
|
|
For building step return codes:
|
|
|
|
- M32C_MAKE_STEPPED is the return code for finishing a normal step.
|
|
|
|
- M32C_MAKE_HIT_BREAK is the return code for hitting a breakpoint.
|
|
|
|
- M32C_MAKE_EXITED (C) is the return code for exiting with status C.
|
|
|
|
- M32C_MAKE_STOPPED (S) is the return code for stopping on signal S. */
|
|
|
|
#define M32C_MAKE_STEPPED() (0)
|
|
|
|
#define M32C_MAKE_HIT_BREAK() (1)
|
|
|
|
#define M32C_MAKE_EXITED(c) (((int) (c) << 8) + 2)
|
|
|
|
#define M32C_MAKE_STOPPED(s) (((int) (s) << 8) + 3)
|
|
|
|
|
|
|
|
#define M32C_STEPPED(r) ((r) == M32C_MAKE_STEPPED ())
|
|
|
|
#define M32C_HIT_BREAK(r) ((r) == M32C_MAKE_HIT_BREAK ())
|
|
|
|
#define M32C_EXITED(r) (((r) & 0xff) == 2)
|
|
|
|
#define M32C_EXIT_STATUS(r) ((r) >> 8)
|
|
|
|
#define M32C_STOPPED(r) (((r) & 0xff) == 3)
|
|
|
|
#define M32C_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;
|
|
|
|
|
|
|
|
/* Used to detect heap/stack collisions */
|
|
|
|
extern unsigned int heaptop;
|
|
|
|
extern unsigned int heapbottom;
|
|
|
|
|
|
|
|
/* Points to one of the below functions, set by m32c_load(). */
|
|
|
|
extern int (*decode_opcode) ();
|
|
|
|
|
|
|
|
extern int decode_r8c ();
|
|
|
|
extern int decode_m32c ();
|
|
|
|
|
|
|
|
extern void trace_register_changes ();
|