root / target-m68k / cpu.h @ a87295e8
History | View | Annotate | Download (4.6 kB)
1 |
/*
|
---|---|
2 |
* m68k virtual CPU header
|
3 |
*
|
4 |
* Copyright (c) 2005-2007 CodeSourcery
|
5 |
* Written by Paul Brook
|
6 |
*
|
7 |
* This library is free software; you can redistribute it and/or
|
8 |
* modify it under the terms of the GNU Lesser General Public
|
9 |
* License as published by the Free Software Foundation; either
|
10 |
* version 2 of the License, or (at your option) any later version.
|
11 |
*
|
12 |
* This library is distributed in the hope that it will be useful,
|
13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
15 |
* General Public License for more details.
|
16 |
*
|
17 |
* You should have received a copy of the GNU Lesser General Public
|
18 |
* License along with this library; if not, write to the Free Software
|
19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
20 |
*/
|
21 |
#ifndef CPU_M68K_H
|
22 |
#define CPU_M68K_H
|
23 |
|
24 |
#define TARGET_LONG_BITS 32 |
25 |
|
26 |
#include "cpu-defs.h" |
27 |
|
28 |
#include "softfloat.h" |
29 |
|
30 |
#define MAX_QREGS 32 |
31 |
|
32 |
#define TARGET_HAS_ICE 1 |
33 |
|
34 |
#define ELF_MACHINE EM_68K
|
35 |
|
36 |
#define EXCP_ACCESS 2 /* Access (MMU) error. */ |
37 |
#define EXCP_ADDRESS 3 /* Address error. */ |
38 |
#define EXCP_ILLEGAL 4 /* Illegal instruction. */ |
39 |
#define EXCP_DIV0 5 /* Divide by zero */ |
40 |
#define EXCP_PRIVILEGE 8 /* Privilege violation. */ |
41 |
#define EXCP_TRACE 9 |
42 |
#define EXCP_LINEA 10 /* Unimplemented line-A (MAC) opcode. */ |
43 |
#define EXCP_LINEF 11 /* Unimplemented line-F (FPU) opcode. */ |
44 |
#define EXCP_DEBUGNBP 12 /* Non-breakpoint debug interrupt. */ |
45 |
#define EXCP_DEBEGBP 13 /* Breakpoint debug interrupt. */ |
46 |
#define EXCP_FORMAT 14 /* RTE format error. */ |
47 |
#define EXCP_UNINITIALIZED 15 |
48 |
#define EXCP_TRAP0 32 /* User trap #0. */ |
49 |
#define EXCP_TRAP15 47 /* User trap #15. */ |
50 |
#define EXCP_UNSUPPORTED 61 |
51 |
#define EXCP_ICE 13 |
52 |
|
53 |
#define EXCP_RTE 0x100 |
54 |
#define EXCP_HALT_INSN 0x101 |
55 |
|
56 |
typedef struct CPUM68KState { |
57 |
uint32_t dregs[8];
|
58 |
uint32_t aregs[8];
|
59 |
uint32_t pc; |
60 |
uint32_t sr; |
61 |
|
62 |
/* Condition flags. */
|
63 |
uint32_t cc_op; |
64 |
uint32_t cc_dest; |
65 |
uint32_t cc_src; |
66 |
uint32_t cc_x; |
67 |
|
68 |
float64 fregs[8];
|
69 |
float64 fp_result; |
70 |
uint32_t fpcr; |
71 |
uint32_t fpsr; |
72 |
float_status fp_status; |
73 |
|
74 |
/* Temporary storage for DIV helpers. */
|
75 |
uint32_t div1; |
76 |
uint32_t div2; |
77 |
|
78 |
/* MMU status. */
|
79 |
struct {
|
80 |
uint32_t ar; |
81 |
} mmu; |
82 |
|
83 |
/* Control registers. */
|
84 |
uint32_t vbr; |
85 |
uint32_t mbar; |
86 |
uint32_t rambar0; |
87 |
|
88 |
/* ??? remove this. */
|
89 |
uint32_t t1; |
90 |
|
91 |
/* exception/interrupt handling */
|
92 |
jmp_buf jmp_env; |
93 |
int exception_index;
|
94 |
int interrupt_request;
|
95 |
int user_mode_only;
|
96 |
int halted;
|
97 |
|
98 |
int pending_vector;
|
99 |
int pending_level;
|
100 |
|
101 |
uint32_t qregs[MAX_QREGS]; |
102 |
|
103 |
CPU_COMMON |
104 |
} CPUM68KState; |
105 |
|
106 |
CPUM68KState *cpu_m68k_init(void);
|
107 |
int cpu_m68k_exec(CPUM68KState *s);
|
108 |
void cpu_m68k_close(CPUM68KState *s);
|
109 |
void do_interrupt(int is_hw); |
110 |
/* you can call this signal handler from your SIGBUS and SIGSEGV
|
111 |
signal handlers to inform the virtual CPU of exceptions. non zero
|
112 |
is returned if the signal was handled by the virtual CPU. */
|
113 |
int cpu_m68k_signal_handler(int host_signum, void *pinfo, |
114 |
void *puc);
|
115 |
void cpu_m68k_flush_flags(CPUM68KState *, int); |
116 |
|
117 |
enum {
|
118 |
CC_OP_DYNAMIC, /* Use env->cc_op */
|
119 |
CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */
|
120 |
CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */
|
121 |
CC_OP_ADD, /* CC_DEST = result, CC_SRC = source */
|
122 |
CC_OP_SUB, /* CC_DEST = result, CC_SRC = source */
|
123 |
CC_OP_CMPB, /* CC_DEST = result, CC_SRC = source */
|
124 |
CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */
|
125 |
CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */
|
126 |
CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */
|
127 |
CC_OP_SHL, /* CC_DEST = source, CC_SRC = shift */
|
128 |
CC_OP_SHR, /* CC_DEST = source, CC_SRC = shift */
|
129 |
CC_OP_SAR, /* CC_DEST = source, CC_SRC = shift */
|
130 |
}; |
131 |
|
132 |
#define CCF_C 0x01 |
133 |
#define CCF_V 0x02 |
134 |
#define CCF_Z 0x04 |
135 |
#define CCF_N 0x08 |
136 |
#define CCF_X 0x10 |
137 |
|
138 |
#define SR_I_SHIFT 8 |
139 |
#define SR_I 0x0700 |
140 |
#define SR_M 0x1000 |
141 |
#define SR_S 0x2000 |
142 |
#define SR_T 0x8000 |
143 |
|
144 |
typedef struct m68k_def_t m68k_def_t; |
145 |
|
146 |
int cpu_m68k_set_model(CPUM68KState *env, const char * name); |
147 |
|
148 |
void m68k_set_irq_level(CPUM68KState *env, int level, uint8_t vector); |
149 |
|
150 |
#define M68K_FPCR_PREC (1 << 6) |
151 |
|
152 |
void do_m68k_semihosting(CPUM68KState *env, int nr); |
153 |
|
154 |
#ifdef CONFIG_USER_ONLY
|
155 |
/* Linux uses 8k pages. */
|
156 |
#define TARGET_PAGE_BITS 13 |
157 |
#else
|
158 |
/* Smallest TLB entry size is 1k. */
|
159 |
#define TARGET_PAGE_BITS 10 |
160 |
#endif
|
161 |
#include "cpu-all.h" |
162 |
|
163 |
#endif
|