/* * common defines for all CPUs * * Copyright (c) 2003 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef CPU_DEFS_H #define CPU_DEFS_H #ifndef NEED_CPU_H #error cpu.h included from common code #endif #include "config.h" #include <setjmp.h> #include <inttypes.h> #include "osdep.h" #ifndef TARGET_LONG_BITS #error TARGET_LONG_BITS must be defined before including this header #endif #ifndef TARGET_PHYS_ADDR_BITS #if TARGET_LONG_BITS >= HOST_LONG_BITS #define TARGET_PHYS_ADDR_BITS TARGET_LONG_BITS #else #define TARGET_PHYS_ADDR_BITS HOST_LONG_BITS #endif #endif #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8) /* target_ulong is the type of a virtual address */ #if TARGET_LONG_SIZE == 4 typedef int32_t target_long; typedef uint32_t target_ulong; #define TARGET_FMT_lx "%08x" #define TARGET_FMT_ld "%d" #define TARGET_FMT_lu "%u" #elif TARGET_LONG_SIZE == 8 typedef int64_t target_long; typedef uint64_t target_ulong; #define TARGET_FMT_lx "%016" PRIx64 #define TARGET_FMT_ld "%" PRId64 #define TARGET_FMT_lu "%" PRIu64 #else #error TARGET_LONG_SIZE undefined #endif /* target_phys_addr_t is the type of a physical address (its size can be different from 'target_ulong'). We have sizeof(target_phys_addr) = max(sizeof(unsigned long), sizeof(size_of_target_physical_address)) because we must pass a host pointer to memory operations in some cases */ #if TARGET_PHYS_ADDR_BITS == 32 typedef uint32_t target_phys_addr_t; #define TARGET_FMT_plx "%08x" #elif TARGET_PHYS_ADDR_BITS == 64 typedef uint64_t target_phys_addr_t; #define TARGET_FMT_plx "%016" PRIx64 #else #error TARGET_PHYS_ADDR_BITS undefined #endif #define HOST_LONG_SIZE (HOST_LONG_BITS / 8) #define EXCP_INTERRUPT 0x10000 /* async interruption */ #define EXCP_HLT 0x10001 /* hlt instruction reached */ #define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */ #define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */ #define MAX_BREAKPOINTS 32 #define MAX_WATCHPOINTS 32 #define TB_JMP_CACHE_BITS 12 #define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS) /* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for addresses on the same page. The top bits are the same. This allows TLB invalidation to quickly clear a subset of the hash table. */ #define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2) #define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS) #define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1) #define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE) #define CPU_TLB_BITS 8 #define CPU_TLB_SIZE (1 << CPU_TLB_BITS) #if TARGET_PHYS_ADDR_BITS == 32 && TARGET_LONG_BITS == 32 #define CPU_TLB_ENTRY_BITS 4 #else #define CPU_TLB_ENTRY_BITS 5 #endif typedef struct CPUTLBEntry { /* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address bit TARGET_PAGE_BITS-1..4 : Nonzero for accesses that should not go directly to ram. bit 3 : indicates that the entry is invalid bit 2..0 : zero */ target_ulong addr_read; target_ulong addr_write; target_ulong addr_code; /* Addend to virtual address to get physical address. IO accesses use the correcponding iotlb value. */ #if TARGET_PHYS_ADDR_BITS == 64 /* on i386 Linux make sure it is aligned */ target_phys_addr_t addend __attribute__((aligned(8))); #else target_phys_addr_t addend; #endif /* padding to get a power of two size */ uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) - (sizeof(target_ulong) * 3 + ((-sizeof(target_ulong) * 3) & (sizeof(target_phys_addr_t) - 1)) + sizeof(target_phys_addr_t))]; } CPUTLBEntry; #ifdef WORDS_BIGENDIAN typedef struct icount_decr_u16 { uint16_t high; uint16_t low; } icount_decr_u16; #else typedef struct icount_decr_u16 { uint16_t low; uint16_t high; } icount_decr_u16; #endif #define CPU_TEMP_BUF_NLONGS 128 #define CPU_COMMON \ struct TranslationBlock *current_tb; /* currently executing TB */ \ /* soft mmu support */ \ /* in order to avoid passing too many arguments to the MMIO \ helpers, we store some rarely used information in the CPU \ context) */ \ unsigned long mem_io_pc; /* host pc at which the memory was \ accessed */ \ target_ulong mem_io_vaddr; /* target virtual addr at which the \ memory was accessed */ \ uint32_t halted; /* Nonzero if the CPU is in suspend state */ \ uint32_t interrupt_request; \ /* The meaning of the MMU modes is defined in the target code. */ \ CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \ target_phys_addr_t iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \ struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \ /* buffer for temporaries in the code generator */ \ long temp_buf[CPU_TEMP_BUF_NLONGS]; \ \ int64_t icount_extra; /* Instructions until next timer event. */ \ /* Number of cycles left, with interrupt flag in high bit. \ This allows a single read-compare-cbranch-write sequence to test \ for both decrementer underflow and exceptions. */ \ union { \ uint32_t u32; \ icount_decr_u16 u16; \ } icount_decr; \ uint32_t can_do_io; /* nonzero if memory mapped IO is safe. */ \ \ /* from this point: preserved by CPU reset */ \ /* ice debug support */ \ target_ulong breakpoints[MAX_BREAKPOINTS]; \ int nb_breakpoints; \ int singlestep_enabled; \ \ struct { \ target_ulong vaddr; \ int type; /* PAGE_READ/PAGE_WRITE */ \ } watchpoint[MAX_WATCHPOINTS]; \ int nb_watchpoints; \ int watchpoint_hit; \ \ struct GDBRegisterState *gdb_regs; \ \ /* Core interrupt code */ \ jmp_buf jmp_env; \ int exception_index; \ \ int user_mode_only; \ \ void *next_cpu; /* next CPU sharing TB cache */ \ int cpu_index; /* CPU index (informative) */ \ int running; /* Nonzero if cpu is currently running(usermode). */ \ /* user data */ \ void *opaque; \ \ const char *cpu_model_str; #endif