Annotation of qemu/cpu-defs.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * common defines for all CPUs
        !             3:  * 
        !             4:  * Copyright (c) 2003 Fabrice Bellard
        !             5:  *
        !             6:  * This library is free software; you can redistribute it and/or
        !             7:  * modify it under the terms of the GNU Lesser General Public
        !             8:  * License as published by the Free Software Foundation; either
        !             9:  * version 2 of the License, or (at your option) any later version.
        !            10:  *
        !            11:  * This library is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:  * Lesser General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU Lesser General Public
        !            17:  * License along with this library; if not, write to the Free Software
        !            18:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            19:  */
        !            20: #ifndef CPU_DEFS_H
        !            21: #define CPU_DEFS_H
        !            22: 
        !            23: #include "config.h"
        !            24: #include <setjmp.h>
        !            25: #include <inttypes.h>
        !            26: #include "osdep.h"
        !            27: 
        !            28: #ifndef TARGET_LONG_BITS
        !            29: #error TARGET_LONG_BITS must be defined before including this header
        !            30: #endif
        !            31: 
        !            32: #ifndef TARGET_PHYS_ADDR_BITS 
        !            33: #if TARGET_LONG_BITS >= HOST_LONG_BITS
        !            34: #define TARGET_PHYS_ADDR_BITS TARGET_LONG_BITS
        !            35: #else
        !            36: #define TARGET_PHYS_ADDR_BITS HOST_LONG_BITS
        !            37: #endif
        !            38: #endif
        !            39: 
        !            40: #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
        !            41: 
        !            42: /* target_ulong is the type of a virtual address */
        !            43: #if TARGET_LONG_SIZE == 4
        !            44: typedef int32_t target_long;
        !            45: typedef uint32_t target_ulong;
        !            46: #define TARGET_FMT_lx "%08x"
        !            47: #elif TARGET_LONG_SIZE == 8
        !            48: typedef int64_t target_long;
        !            49: typedef uint64_t target_ulong;
        !            50: #define TARGET_FMT_lx "%016llx"
        !            51: #else
        !            52: #error TARGET_LONG_SIZE undefined
        !            53: #endif
        !            54: 
        !            55: /* target_phys_addr_t is the type of a physical address (its size can
        !            56:    be different from 'target_ulong'). We have sizeof(target_phys_addr)
        !            57:    = max(sizeof(unsigned long),
        !            58:    sizeof(size_of_target_physical_address)) because we must pass a
        !            59:    host pointer to memory operations in some cases */
        !            60: 
        !            61: #if TARGET_PHYS_ADDR_BITS == 32
        !            62: typedef uint32_t target_phys_addr_t;
        !            63: #elif TARGET_PHYS_ADDR_BITS == 64
        !            64: typedef uint64_t target_phys_addr_t;
        !            65: #else
        !            66: #error TARGET_PHYS_ADDR_BITS undefined
        !            67: #endif
        !            68: 
        !            69: /* address in the RAM (different from a physical address) */
        !            70: typedef unsigned long ram_addr_t;
        !            71: 
        !            72: #define HOST_LONG_SIZE (HOST_LONG_BITS / 8)
        !            73: 
        !            74: #define EXCP_INTERRUPT         0x10000 /* async interruption */
        !            75: #define EXCP_HLT        0x10001 /* hlt instruction reached */
        !            76: #define EXCP_DEBUG      0x10002 /* cpu stopped after a breakpoint or singlestep */
        !            77: 
        !            78: #define MAX_BREAKPOINTS 32
        !            79: 
        !            80: #define CPU_TLB_SIZE 256
        !            81: 
        !            82: typedef struct CPUTLBEntry {
        !            83:     /* bit 31 to TARGET_PAGE_BITS : virtual address 
        !            84:        bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io
        !            85:                                               zone number
        !            86:        bit 3                      : indicates that the entry is invalid
        !            87:        bit 2..0                   : zero
        !            88:     */
        !            89:     target_ulong address; 
        !            90:     /* addend to virtual address to get physical address */
        !            91:     target_phys_addr_t addend; 
        !            92: } CPUTLBEntry;
        !            93: 
        !            94: #endif

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