2 * defines common to all virtual CPUs
4 * Copyright (c) 2003 Fabrice Bellard
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.
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.
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
23 #if defined(__arm__) || defined(__sparc__)
27 /* some important defines:
29 * WORDS_ALIGNED : if defined, the host cpu can only make word aligned
32 * WORDS_BIGENDIAN : if defined, the host cpu is big endian and
33 * otherwise little endian.
35 * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet))
37 * TARGET_WORDS_BIGENDIAN : same for target cpu
42 #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
48 static inline uint16_t tswap16(uint16_t s)
53 static inline uint32_t tswap32(uint32_t s)
58 static inline uint64_t tswap64(uint64_t s)
63 static inline void tswap16s(uint16_t *s)
68 static inline void tswap32s(uint32_t *s)
73 static inline void tswap64s(uint64_t *s)
80 static inline uint16_t tswap16(uint16_t s)
85 static inline uint32_t tswap32(uint32_t s)
90 static inline uint64_t tswap64(uint64_t s)
95 static inline void tswap16s(uint16_t *s)
99 static inline void tswap32s(uint32_t *s)
103 static inline void tswap64s(uint64_t *s)
109 #if TARGET_LONG_SIZE == 4
110 #define tswapl(s) tswap32(s)
111 #define tswapls(s) tswap32s((uint32_t *)(s))
113 #define tswapl(s) tswap64(s)
114 #define tswapls(s) tswap64s((uint64_t *)(s))
117 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
120 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
134 /* CPU memory access without any memory or io remapping */
137 * the generic syntax for the memory accesses is:
139 * load: ld{type}{sign}{size}{endian}_{access_type}(ptr)
141 * store: st{type}{size}{endian}_{access_type}(ptr, val)
144 * (empty): integer access
148 * (empty): for floats or 32 bit size
159 * (empty): target cpu endianness or 8 bit access
160 * r : reversed target cpu endianness (not implemented yet)
161 * be : big endian (not implemented yet)
162 * le : little endian (not implemented yet)
165 * raw : host memory access
166 * user : user mode access using soft MMU
167 * kernel : kernel mode access using soft MMU
169 static inline int ldub_p(void *ptr)
171 return *(uint8_t *)ptr;
174 static inline int ldsb_p(void *ptr)
176 return *(int8_t *)ptr;
179 static inline void stb_p(void *ptr, int v)
184 /* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
185 kernel handles unaligned load/stores may give better results, but
186 it is a system wide setting : bad */
187 #if !defined(TARGET_WORDS_BIGENDIAN) && (defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED))
189 /* conservative code for little endian unaligned accesses */
190 static inline int lduw_p(void *ptr)
194 __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
198 return p[0] | (p[1] << 8);
202 static inline int ldsw_p(void *ptr)
206 __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
210 return (int16_t)(p[0] | (p[1] << 8));
214 static inline int ldl_p(void *ptr)
218 __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
222 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
226 static inline uint64_t ldq_p(void *ptr)
232 return v1 | ((uint64_t)v2 << 32);
235 static inline void stw_p(void *ptr, int v)
238 __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
246 static inline void stl_p(void *ptr, int v)
249 __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
259 static inline void stq_p(void *ptr, uint64_t v)
262 stl_p(p, (uint32_t)v);
263 stl_p(p + 4, v >> 32);
268 static inline float ldfl_p(void *ptr)
278 static inline void stfl_p(void *ptr, float v)
288 static inline double ldfq_p(void *ptr)
291 u.l.lower = ldl_p(ptr);
292 u.l.upper = ldl_p(ptr + 4);
296 static inline void stfq_p(void *ptr, double v)
300 stl_p(ptr, u.l.lower);
301 stl_p(ptr + 4, u.l.upper);
304 #elif defined(TARGET_WORDS_BIGENDIAN) && (!defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED))
306 static inline int lduw_p(void *ptr)
308 #if defined(__i386__)
310 asm volatile ("movzwl %1, %0\n"
313 : "m" (*(uint16_t *)ptr));
316 uint8_t *b = (uint8_t *) ptr;
317 return ((b[0] << 8) | b[1]);
321 static inline int ldsw_p(void *ptr)
323 #if defined(__i386__)
325 asm volatile ("movzwl %1, %0\n"
328 : "m" (*(uint16_t *)ptr));
331 uint8_t *b = (uint8_t *) ptr;
332 return (int16_t)((b[0] << 8) | b[1]);
336 static inline int ldl_p(void *ptr)
338 #if defined(__i386__) || defined(__x86_64__)
340 asm volatile ("movl %1, %0\n"
343 : "m" (*(uint32_t *)ptr));
346 uint8_t *b = (uint8_t *) ptr;
347 return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
351 static inline uint64_t ldq_p(void *ptr)
356 return (((uint64_t)a<<32)|b);
359 static inline void stw_p(void *ptr, int v)
361 #if defined(__i386__)
362 asm volatile ("xchgb %b0, %h0\n"
365 : "m" (*(uint16_t *)ptr), "0" (v));
367 uint8_t *d = (uint8_t *) ptr;
373 static inline void stl_p(void *ptr, int v)
375 #if defined(__i386__) || defined(__x86_64__)
376 asm volatile ("bswap %0\n"
379 : "m" (*(uint32_t *)ptr), "0" (v));
381 uint8_t *d = (uint8_t *) ptr;
389 static inline void stq_p(void *ptr, uint64_t v)
397 static inline float ldfl_p(void *ptr)
407 static inline void stfl_p(void *ptr, float v)
417 static inline double ldfq_p(void *ptr)
420 u.l.upper = ldl_p(ptr);
421 u.l.lower = ldl_p(ptr + 4);
425 static inline void stfq_p(void *ptr, double v)
429 stl_p(ptr, u.l.upper);
430 stl_p(ptr + 4, u.l.lower);
435 static inline int lduw_p(void *ptr)
437 return *(uint16_t *)ptr;
440 static inline int ldsw_p(void *ptr)
442 return *(int16_t *)ptr;
445 static inline int ldl_p(void *ptr)
447 return *(uint32_t *)ptr;
450 static inline uint64_t ldq_p(void *ptr)
452 return *(uint64_t *)ptr;
455 static inline void stw_p(void *ptr, int v)
457 *(uint16_t *)ptr = v;
460 static inline void stl_p(void *ptr, int v)
462 *(uint32_t *)ptr = v;
465 static inline void stq_p(void *ptr, uint64_t v)
467 *(uint64_t *)ptr = v;
472 static inline float ldfl_p(void *ptr)
474 return *(float *)ptr;
477 static inline double ldfq_p(void *ptr)
479 return *(double *)ptr;
482 static inline void stfl_p(void *ptr, float v)
487 static inline void stfq_p(void *ptr, double v)
493 /* MMU memory access macros */
495 /* NOTE: we use double casts if pointers and target_ulong have
497 #define ldub_raw(p) ldub_p((uint8_t *)(long)(p))
498 #define ldsb_raw(p) ldsb_p((uint8_t *)(long)(p))
499 #define lduw_raw(p) lduw_p((uint8_t *)(long)(p))
500 #define ldsw_raw(p) ldsw_p((uint8_t *)(long)(p))
501 #define ldl_raw(p) ldl_p((uint8_t *)(long)(p))
502 #define ldq_raw(p) ldq_p((uint8_t *)(long)(p))
503 #define ldfl_raw(p) ldfl_p((uint8_t *)(long)(p))
504 #define ldfq_raw(p) ldfq_p((uint8_t *)(long)(p))
505 #define stb_raw(p, v) stb_p((uint8_t *)(long)(p), v)
506 #define stw_raw(p, v) stw_p((uint8_t *)(long)(p), v)
507 #define stl_raw(p, v) stl_p((uint8_t *)(long)(p), v)
508 #define stq_raw(p, v) stq_p((uint8_t *)(long)(p), v)
509 #define stfl_raw(p, v) stfl_p((uint8_t *)(long)(p), v)
510 #define stfq_raw(p, v) stfq_p((uint8_t *)(long)(p), v)
513 #if defined(CONFIG_USER_ONLY)
515 /* if user mode, no other memory access functions */
516 #define ldub(p) ldub_raw(p)
517 #define ldsb(p) ldsb_raw(p)
518 #define lduw(p) lduw_raw(p)
519 #define ldsw(p) ldsw_raw(p)
520 #define ldl(p) ldl_raw(p)
521 #define ldq(p) ldq_raw(p)
522 #define ldfl(p) ldfl_raw(p)
523 #define ldfq(p) ldfq_raw(p)
524 #define stb(p, v) stb_raw(p, v)
525 #define stw(p, v) stw_raw(p, v)
526 #define stl(p, v) stl_raw(p, v)
527 #define stq(p, v) stq_raw(p, v)
528 #define stfl(p, v) stfl_raw(p, v)
529 #define stfq(p, v) stfq_raw(p, v)
531 #define ldub_code(p) ldub_raw(p)
532 #define ldsb_code(p) ldsb_raw(p)
533 #define lduw_code(p) lduw_raw(p)
534 #define ldsw_code(p) ldsw_raw(p)
535 #define ldl_code(p) ldl_raw(p)
537 #define ldub_kernel(p) ldub_raw(p)
538 #define ldsb_kernel(p) ldsb_raw(p)
539 #define lduw_kernel(p) lduw_raw(p)
540 #define ldsw_kernel(p) ldsw_raw(p)
541 #define ldl_kernel(p) ldl_raw(p)
542 #define ldfl_kernel(p) ldfl_raw(p)
543 #define ldfq_kernel(p) ldfq_raw(p)
544 #define stb_kernel(p, v) stb_raw(p, v)
545 #define stw_kernel(p, v) stw_raw(p, v)
546 #define stl_kernel(p, v) stl_raw(p, v)
547 #define stq_kernel(p, v) stq_raw(p, v)
548 #define stfl_kernel(p, v) stfl_raw(p, v)
549 #define stfq_kernel(p, vt) stfq_raw(p, v)
551 #endif /* defined(CONFIG_USER_ONLY) */
553 /* page related stuff */
555 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
556 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
557 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
559 extern unsigned long qemu_real_host_page_size;
560 extern unsigned long qemu_host_page_bits;
561 extern unsigned long qemu_host_page_size;
562 extern unsigned long qemu_host_page_mask;
564 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
566 /* same as PROT_xxx */
567 #define PAGE_READ 0x0001
568 #define PAGE_WRITE 0x0002
569 #define PAGE_EXEC 0x0004
570 #define PAGE_BITS (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
571 #define PAGE_VALID 0x0008
572 /* original state of the write flag (used when tracking self-modifying
574 #define PAGE_WRITE_ORG 0x0010
576 void page_dump(FILE *f);
577 int page_get_flags(unsigned long address);
578 void page_set_flags(unsigned long start, unsigned long end, int flags);
579 void page_unprotect_range(uint8_t *data, unsigned long data_size);
581 #define SINGLE_CPU_DEFINES
582 #ifdef SINGLE_CPU_DEFINES
584 #if defined(TARGET_I386)
586 #define CPUState CPUX86State
587 #define cpu_init cpu_x86_init
588 #define cpu_exec cpu_x86_exec
589 #define cpu_gen_code cpu_x86_gen_code
590 #define cpu_signal_handler cpu_x86_signal_handler
592 #elif defined(TARGET_ARM)
594 #define CPUState CPUARMState
595 #define cpu_init cpu_arm_init
596 #define cpu_exec cpu_arm_exec
597 #define cpu_gen_code cpu_arm_gen_code
598 #define cpu_signal_handler cpu_arm_signal_handler
600 #elif defined(TARGET_SPARC)
602 #define CPUState CPUSPARCState
603 #define cpu_init cpu_sparc_init
604 #define cpu_exec cpu_sparc_exec
605 #define cpu_gen_code cpu_sparc_gen_code
606 #define cpu_signal_handler cpu_sparc_signal_handler
608 #elif defined(TARGET_PPC)
610 #define CPUState CPUPPCState
611 #define cpu_init cpu_ppc_init
612 #define cpu_exec cpu_ppc_exec
613 #define cpu_gen_code cpu_ppc_gen_code
614 #define cpu_signal_handler cpu_ppc_signal_handler
618 #error unsupported target CPU
622 #endif /* SINGLE_CPU_DEFINES */
624 void cpu_dump_state(CPUState *env, FILE *f,
625 int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
628 void cpu_abort(CPUState *env, const char *fmt, ...);
629 extern CPUState *cpu_single_env;
630 extern int code_copy_enabled;
632 #define CPU_INTERRUPT_EXIT 0x01 /* wants exit from main loop */
633 #define CPU_INTERRUPT_HARD 0x02 /* hardware interrupt pending */
634 #define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
635 #define CPU_INTERRUPT_TIMER 0x08 /* internal timer exception pending */
636 void cpu_interrupt(CPUState *s, int mask);
637 void cpu_reset_interrupt(CPUState *env, int mask);
639 int cpu_breakpoint_insert(CPUState *env, target_ulong pc);
640 int cpu_breakpoint_remove(CPUState *env, target_ulong pc);
641 void cpu_single_step(CPUState *env, int enabled);
642 void cpu_reset(CPUState *s);
644 /* Return the physical page corresponding to a virtual one. Use it
645 only for debugging because no protection checks are done. Return -1
647 target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr);
649 #define CPU_LOG_TB_OUT_ASM (1 << 0)
650 #define CPU_LOG_TB_IN_ASM (1 << 1)
651 #define CPU_LOG_TB_OP (1 << 2)
652 #define CPU_LOG_TB_OP_OPT (1 << 3)
653 #define CPU_LOG_INT (1 << 4)
654 #define CPU_LOG_EXEC (1 << 5)
655 #define CPU_LOG_PCALL (1 << 6)
656 #define CPU_LOG_IOPORT (1 << 7)
657 #define CPU_LOG_TB_CPU (1 << 8)
659 /* define log items */
660 typedef struct CPULogItem {
666 extern CPULogItem cpu_log_items[];
668 void cpu_set_log(int log_flags);
669 void cpu_set_log_filename(const char *filename);
670 int cpu_str_to_log_mask(const char *str);
674 /* NOTE: as these functions may be even used when there is an isa
675 brige on non x86 targets, we always defined them */
676 #ifndef NO_CPU_IO_DEFS
677 void cpu_outb(CPUState *env, int addr, int val);
678 void cpu_outw(CPUState *env, int addr, int val);
679 void cpu_outl(CPUState *env, int addr, int val);
680 int cpu_inb(CPUState *env, int addr);
681 int cpu_inw(CPUState *env, int addr);
682 int cpu_inl(CPUState *env, int addr);
687 extern int phys_ram_size;
688 extern int phys_ram_fd;
689 extern uint8_t *phys_ram_base;
690 extern uint8_t *phys_ram_dirty;
692 /* physical memory access */
693 #define IO_MEM_NB_ENTRIES 256
694 #define TLB_INVALID_MASK (1 << 3)
695 #define IO_MEM_SHIFT 4
697 #define IO_MEM_RAM (0 << IO_MEM_SHIFT) /* hardcoded offset */
698 #define IO_MEM_ROM (1 << IO_MEM_SHIFT) /* hardcoded offset */
699 #define IO_MEM_UNASSIGNED (2 << IO_MEM_SHIFT)
700 #define IO_MEM_CODE (3 << IO_MEM_SHIFT) /* used internally, never use directly */
701 #define IO_MEM_NOTDIRTY (4 << IO_MEM_SHIFT) /* used internally, never use directly */
703 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
704 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
706 void cpu_register_physical_memory(target_phys_addr_t start_addr,
708 unsigned long phys_offset);
709 int cpu_register_io_memory(int io_index,
710 CPUReadMemoryFunc **mem_read,
711 CPUWriteMemoryFunc **mem_write,
713 CPUWriteMemoryFunc **cpu_get_io_memory_write(int io_index);
714 CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index);
716 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
717 int len, int is_write);
718 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
719 uint8_t *buf, int len)
721 cpu_physical_memory_rw(addr, buf, len, 0);
723 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
724 const uint8_t *buf, int len)
726 cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
729 int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
730 uint8_t *buf, int len, int is_write);
732 /* read dirty bit (return 0 or 1) */
733 static inline int cpu_physical_memory_is_dirty(target_ulong addr)
735 return phys_ram_dirty[addr >> TARGET_PAGE_BITS];
738 static inline void cpu_physical_memory_set_dirty(target_ulong addr)
740 phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 1;
743 void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end);
745 #endif /* CPU_ALL_H */