6ebbf39000
allowing support of more than 2 mmu access modes. Add backward compatibility is_user variable in targets code when needed. Implement per target cpu_mmu_index function, avoiding duplicated code and #ifdef TARGET_xxx in softmmu core functions. Implement per target mmu modes definitions. As an example, add PowerPC hypervisor mode definition and Alpha executive and kernel modes definitions. Optimize PowerPC case, precomputing mmu_idx when MSR register changes and using the same definition in code translation code. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3384 c046a42c-6fe2-441c-8c8c-71466251a162
148 lines
6 KiB
C
148 lines
6 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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#define TARGET_FMT_lu "%u"
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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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#define TARGET_FMT_lu "%" PRIu64
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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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#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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