root / target-m68k / cpu.h @ 36bb244b
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/*
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* m68k virtual CPU header
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*
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* Copyright (c) 2005-2006 CodeSourcery
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* Written by Paul Brook
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef CPU_M68K_H
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#define CPU_M68K_H
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#define TARGET_LONG_BITS 32 |
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#include "cpu-defs.h" |
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#include "softfloat.h" |
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#define MAX_QREGS 32 |
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#define TARGET_HAS_ICE 1 |
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#define ELF_MACHINE EM_68K
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#define EXCP_ACCESS 2 /* Access (MMU) error. */ |
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#define EXCP_ADDRESS 3 /* Address error. */ |
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#define EXCP_ILLEGAL 4 /* Illegal instruction. */ |
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#define EXCP_DIV0 5 /* Divide by zero */ |
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#define EXCP_PRIVILEGE 8 /* Privilege violation. */ |
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#define EXCP_TRACE 9 |
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#define EXCP_LINEA 10 /* Unimplemented line-A (MAC) opcode. */ |
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#define EXCP_LINEF 11 /* Unimplemented line-F (FPU) opcode. */ |
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#define EXCP_DEBUGNBP 12 /* Non-breakpoint debug interrupt. */ |
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#define EXCP_DEBEGBP 13 /* Breakpoint debug interrupt. */ |
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#define EXCP_FORMAT 14 /* RTE format error. */ |
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#define EXCP_UNINITIALIZED 15 |
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#define EXCP_TRAP0 32 /* User trap #0. */ |
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#define EXCP_TRAP15 47 /* User trap #15. */ |
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#define EXCP_UNSUPPORTED 61 |
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#define EXCP_ICE 13 |
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typedef struct CPUM68KState { |
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uint32_t dregs[8];
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uint32_t aregs[8];
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uint32_t pc; |
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uint32_t sr; |
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/* Condition flags. */
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uint32_t cc_op; |
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uint32_t cc_dest; |
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uint32_t cc_src; |
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uint32_t cc_x; |
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float64 fregs[8];
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float64 fp_result; |
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uint32_t fpcr; |
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uint32_t fpsr; |
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float_status fp_status; |
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/* Temporary storage for DIV helpers. */
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uint32_t div1; |
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uint32_t div2; |
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/* MMU status. */
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struct {
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uint32_t ar; |
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} mmu; |
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/* ??? remove this. */
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uint32_t t1; |
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/* exception/interrupt handling */
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jmp_buf jmp_env; |
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int exception_index;
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int interrupt_request;
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int user_mode_only;
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uint32_t address; |
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uint32_t qregs[MAX_QREGS]; |
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CPU_COMMON |
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} CPUM68KState; |
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CPUM68KState *cpu_m68k_init(void);
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int cpu_m68k_exec(CPUM68KState *s);
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void cpu_m68k_close(CPUM68KState *s);
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/* you can call this signal handler from your SIGBUS and SIGSEGV
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signal handlers to inform the virtual CPU of exceptions. non zero
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is returned if the signal was handled by the virtual CPU. */
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int cpu_m68k_signal_handler(int host_signum, void *pinfo, |
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void *puc);
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void cpu_m68k_flush_flags(CPUM68KState *, int); |
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enum {
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CC_OP_DYNAMIC, /* Use env->cc_op */
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CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */
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CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */
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CC_OP_ADD, /* CC_DEST = result, CC_SRC = source */
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CC_OP_SUB, /* CC_DEST = result, CC_SRC = source */
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CC_OP_CMPB, /* CC_DEST = result, CC_SRC = source */
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CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */
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CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */
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CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */
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CC_OP_SHL, /* CC_DEST = source, CC_SRC = shift */
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CC_OP_SHR, /* CC_DEST = source, CC_SRC = shift */
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CC_OP_SAR, /* CC_DEST = source, CC_SRC = shift */
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}; |
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#define CCF_C 0x01 |
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#define CCF_V 0x02 |
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#define CCF_Z 0x04 |
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#define CCF_N 0x08 |
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#define CCF_X 0x01 |
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typedef struct m68k_def_t m68k_def_t; |
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m68k_def_t *m68k_find_by_name(const char *); |
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void cpu_m68k_register(CPUM68KState *, m68k_def_t *);
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#define M68K_FPCR_PREC (1 << 6) |
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#ifdef CONFIG_USER_ONLY
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/* Linux uses 8k pages. */
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#define TARGET_PAGE_BITS 13 |
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#else
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/* Smallest TLB entry size is 1k. */
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#define TARGET_PAGE_BITS 10 |
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#endif
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#include "cpu-all.h" |
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#endif
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