mirror of https://gitee.com/openkylin/qemu.git
155 lines
6.1 KiB
C
155 lines
6.1 KiB
C
/*
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* common defines for all CPUs
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*
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* Copyright (c) 2003 Fabrice Bellard
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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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* Lesser 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_DEFS_H
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#define CPU_DEFS_H
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#include "config.h"
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#include <setjmp.h>
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#include <inttypes.h>
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#include "osdep.h"
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#ifndef TARGET_LONG_BITS
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#error TARGET_LONG_BITS must be defined before including this header
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#endif
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#ifndef TARGET_PHYS_ADDR_BITS
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#if TARGET_LONG_BITS >= HOST_LONG_BITS
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#define TARGET_PHYS_ADDR_BITS TARGET_LONG_BITS
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#else
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#define TARGET_PHYS_ADDR_BITS HOST_LONG_BITS
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#endif
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#endif
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#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
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/* target_ulong is the type of a virtual address */
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#if TARGET_LONG_SIZE == 4
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typedef int32_t target_long;
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typedef uint32_t target_ulong;
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#define TARGET_FMT_lx "%08x"
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#define TARGET_FMT_ld "%d"
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#elif TARGET_LONG_SIZE == 8
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typedef int64_t target_long;
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typedef uint64_t target_ulong;
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#define TARGET_FMT_lx "%016" PRIx64
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#define TARGET_FMT_ld "%" PRId64
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#else
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#error TARGET_LONG_SIZE undefined
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#endif
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/* target_phys_addr_t is the type of a physical address (its size can
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be different from 'target_ulong'). We have sizeof(target_phys_addr)
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= max(sizeof(unsigned long),
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sizeof(size_of_target_physical_address)) because we must pass a
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host pointer to memory operations in some cases */
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#if TARGET_PHYS_ADDR_BITS == 32
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typedef uint32_t target_phys_addr_t;
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#define TARGET_FMT_plx "%08x"
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#elif TARGET_PHYS_ADDR_BITS == 64
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typedef uint64_t target_phys_addr_t;
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#define TARGET_FMT_plx "%016" PRIx64
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#else
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#error TARGET_PHYS_ADDR_BITS undefined
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#endif
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/* address in the RAM (different from a physical address) */
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typedef unsigned long ram_addr_t;
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#define HOST_LONG_SIZE (HOST_LONG_BITS / 8)
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#define EXCP_INTERRUPT 0x10000 /* async interruption */
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#define EXCP_HLT 0x10001 /* hlt instruction reached */
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#define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */
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#define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */
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#define MAX_BREAKPOINTS 32
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#define MAX_WATCHPOINTS 32
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#define TB_JMP_CACHE_BITS 12
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#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
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/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for
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addresses on the same page. The top bits are the same. This allows
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TLB invalidation to quickly clear a subset of the hash table. */
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#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2)
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#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS)
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#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1)
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#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE)
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#define CPU_TLB_BITS 8
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#define CPU_TLB_SIZE (1 << CPU_TLB_BITS)
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typedef struct CPUTLBEntry {
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/* bit 31 to TARGET_PAGE_BITS : virtual address
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bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io
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zone number
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bit 3 : indicates that the entry is invalid
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bit 2..0 : zero
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*/
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target_ulong addr_read;
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target_ulong addr_write;
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target_ulong addr_code;
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/* addend to virtual address to get physical address */
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target_phys_addr_t addend;
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} CPUTLBEntry;
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/* Alpha has 4 different running levels */
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#if defined(TARGET_ALPHA)
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#define NB_MMU_MODES 4
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#elif defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
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#define NB_MMU_MODES 3
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#else
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#define NB_MMU_MODES 2
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#endif
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#define CPU_COMMON \
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struct TranslationBlock *current_tb; /* currently executing TB */ \
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/* soft mmu support */ \
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/* in order to avoid passing too many arguments to the memory \
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write helpers, we store some rarely used information in the CPU \
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context) */ \
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unsigned long mem_write_pc; /* host pc at which the memory was \
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written */ \
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target_ulong mem_write_vaddr; /* target virtual addr at which the \
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memory was written */ \
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/* 0 = kernel, 1 = user */ \
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CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \
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struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \
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\
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/* from this point: preserved by CPU reset */ \
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/* ice debug support */ \
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target_ulong breakpoints[MAX_BREAKPOINTS]; \
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int nb_breakpoints; \
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int singlestep_enabled; \
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\
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struct { \
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target_ulong vaddr; \
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target_phys_addr_t addend; \
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} watchpoint[MAX_WATCHPOINTS]; \
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int nb_watchpoints; \
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int watchpoint_hit; \
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\
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void *next_cpu; /* next CPU sharing TB cache */ \
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int cpu_index; /* CPU index (informative) */ \
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/* user data */ \
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void *opaque;
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#endif
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