![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to cpu.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / target-m68k|
Return to cpu.h CVS log | Up to [Qemu by Fabrice Bellard] / qemu / target-m68k |
1.1 root 1: /*
2: * m68k virtual CPU header
3: *
4: * Copyright (c) 2005-2006 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: typedef struct CPUM68KState {
54: uint32_t dregs[8];
55: uint32_t aregs[8];
56: uint32_t pc;
57: uint32_t sr;
58:
59: /* Condition flags. */
60: uint32_t cc_op;
61: uint32_t cc_dest;
62: uint32_t cc_src;
63: uint32_t cc_x;
64:
65: float64 fregs[8];
66: float64 fp_result;
67: uint32_t fpcr;
68: uint32_t fpsr;
69: float_status fp_status;
70:
71: /* Temporary storage for DIV helpers. */
72: uint32_t div1;
73: uint32_t div2;
74:
75: /* MMU status. */
76: struct {
77: uint32_t ar;
78: } mmu;
79: /* ??? remove this. */
80: uint32_t t1;
81:
82: /* exception/interrupt handling */
83: jmp_buf jmp_env;
84: int exception_index;
85: int interrupt_request;
86: int user_mode_only;
87: uint32_t address;
88:
89: uint32_t qregs[MAX_QREGS];
90:
91: CPU_COMMON
92: } CPUM68KState;
93:
94: CPUM68KState *cpu_m68k_init(void);
95: int cpu_m68k_exec(CPUM68KState *s);
96: void cpu_m68k_close(CPUM68KState *s);
97: /* you can call this signal handler from your SIGBUS and SIGSEGV
98: signal handlers to inform the virtual CPU of exceptions. non zero
99: is returned if the signal was handled by the virtual CPU. */
100: int cpu_m68k_signal_handler(int host_signum, void *pinfo,
101: void *puc);
102: void cpu_m68k_flush_flags(CPUM68KState *, int);
103:
104: enum {
105: CC_OP_DYNAMIC, /* Use env->cc_op */
106: CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */
107: CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */
108: CC_OP_ADD, /* CC_DEST = result, CC_SRC = source */
109: CC_OP_SUB, /* CC_DEST = result, CC_SRC = source */
110: CC_OP_CMPB, /* CC_DEST = result, CC_SRC = source */
111: CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */
112: CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */
113: CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */
114: CC_OP_SHL, /* CC_DEST = source, CC_SRC = shift */
115: CC_OP_SHR, /* CC_DEST = source, CC_SRC = shift */
116: CC_OP_SAR, /* CC_DEST = source, CC_SRC = shift */
117: };
118:
119: #define CCF_C 0x01
120: #define CCF_V 0x02
121: #define CCF_Z 0x04
122: #define CCF_N 0x08
123: #define CCF_X 0x01
124:
125: typedef struct m68k_def_t m68k_def_t;
126:
127: m68k_def_t *m68k_find_by_name(const char *);
128: void cpu_m68k_register(CPUM68KState *, m68k_def_t *);
129:
130: #define M68K_FPCR_PREC (1 << 6)
131:
132: #ifdef CONFIG_USER_ONLY
133: /* Linux uses 8k pages. */
134: #define TARGET_PAGE_BITS 13
135: #else
136: /* Smallest TLB entry size is 1k. */
137: #define TARGET_PAGE_BITS 10
138: #endif
139: #include "cpu-all.h"
140:
141: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.