diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 218 |
1 files changed, 84 insertions, 134 deletions
@@ -118,6 +118,8 @@ RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list.blocks) }; static MemoryRegion *system_memory; static MemoryRegion *system_io; +MemoryRegion io_mem_ram, io_mem_rom, io_mem_unassigned, io_mem_notdirty; + #endif CPUState *first_cpu; @@ -430,7 +432,7 @@ static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc) *lp = pd = g_malloc(sizeof(PhysPageDesc) * L2_SIZE); for (i = 0; i < L2_SIZE; i++) { - pd[i].phys_offset = IO_MEM_UNASSIGNED; + pd[i].phys_offset = io_mem_unassigned.ram_addr; pd[i].region_offset = (first_index + i) << TARGET_PAGE_BITS; } } @@ -446,7 +448,7 @@ static inline PhysPageDesc phys_page_find(target_phys_addr_t index) return *p; } else { return (PhysPageDesc) { - .phys_offset = IO_MEM_UNASSIGNED, + .phys_offset = io_mem_unassigned.ram_addr, .region_offset = index << TARGET_PAGE_BITS, }; } @@ -1965,7 +1967,7 @@ static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry, unsigned long start, unsigned long length) { unsigned long addr; - if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { + if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) { addr = (tlb_entry->addr_write & TARGET_PAGE_MASK) + tlb_entry->addend; if ((addr - start) < length) { tlb_entry->addr_write = (tlb_entry->addr_write & TARGET_PAGE_MASK) | TLB_NOTDIRTY; @@ -2021,7 +2023,7 @@ static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry) ram_addr_t ram_addr; void *p; - if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { + if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) { p = (void *)(unsigned long)((tlb_entry->addr_write & TARGET_PAGE_MASK) + tlb_entry->addend); ram_addr = qemu_ram_addr_from_host_nofail(p); @@ -2087,7 +2089,7 @@ static void tlb_add_large_page(CPUState *env, target_ulong vaddr, static bool is_ram_rom(ram_addr_t pd) { pd &= ~TARGET_PAGE_MASK; - return pd == IO_MEM_RAM || pd == IO_MEM_ROM; + return pd == io_mem_ram.ram_addr || pd == io_mem_rom.ram_addr; } static bool is_ram_rom_romd(ram_addr_t pd) @@ -2133,10 +2135,10 @@ void tlb_set_page(CPUState *env, target_ulong vaddr, if (is_ram_rom(pd)) { /* Normal RAM. */ iotlb = pd & TARGET_PAGE_MASK; - if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM) - iotlb |= IO_MEM_NOTDIRTY; + if ((pd & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) + iotlb |= io_mem_notdirty.ram_addr; else - iotlb |= IO_MEM_ROM; + iotlb |= io_mem_rom.ram_addr; } else { /* IO handlers are currently passed a physical address. It would be nice to pass an offset from the base address @@ -2178,11 +2180,11 @@ void tlb_set_page(CPUState *env, target_ulong vaddr, te->addr_code = -1; } if (prot & PAGE_WRITE) { - if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM || + if ((pd & ~TARGET_PAGE_MASK) == io_mem_rom.ram_addr || (pd & IO_MEM_ROMD)) { /* Write access calls the I/O callback. */ te->addr_write = address | TLB_MMIO; - } else if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && + } else if ((pd & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr && !cpu_physical_memory_is_dirty(pd)) { te->addr_write = address | TLB_NOTDIRTY; } else { @@ -2522,7 +2524,7 @@ void cpu_register_physical_memory_log(target_phys_addr_t start_addr, assert(size); - if (phys_offset == IO_MEM_UNASSIGNED) { + if (phys_offset == io_mem_unassigned.ram_addr) { region_offset = start_addr; } region_offset &= TARGET_PAGE_MASK; @@ -2532,7 +2534,7 @@ void cpu_register_physical_memory_log(target_phys_addr_t start_addr, addr = start_addr; do { p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 0); - if (p && p->phys_offset != IO_MEM_UNASSIGNED) { + if (p && p->phys_offset != io_mem_unassigned.ram_addr) { ram_addr_t orig_memory = p->phys_offset; target_phys_addr_t start_addr2, end_addr2; int need_subpage = 0; @@ -2572,7 +2574,8 @@ void cpu_register_physical_memory_log(target_phys_addr_t start_addr, if (need_subpage) { subpage = subpage_init((addr & TARGET_PAGE_MASK), - &p->phys_offset, IO_MEM_UNASSIGNED, + &p->phys_offset, + io_mem_unassigned.ram_addr, addr & TARGET_PAGE_MASK); subpage_register(subpage, start_addr2, end_addr2, phys_offset, region_offset); @@ -3102,133 +3105,83 @@ ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) return ram_addr; } -static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr) -{ -#ifdef DEBUG_UNASSIGNED - printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); -#endif -#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) - cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, 1); -#endif - return 0; -} - -static uint32_t unassigned_mem_readw(void *opaque, target_phys_addr_t addr) +static uint64_t unassigned_mem_read(void *opaque, target_phys_addr_t addr, + unsigned size) { #ifdef DEBUG_UNASSIGNED printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); #endif #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) - cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, 2); + cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); #endif return 0; } -static uint32_t unassigned_mem_readl(void *opaque, target_phys_addr_t addr) +static void unassigned_mem_write(void *opaque, target_phys_addr_t addr, + uint64_t val, unsigned size) { #ifdef DEBUG_UNASSIGNED - printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); + printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); #endif #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) - cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, 4); + cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); #endif - return 0; } -static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) -{ -#ifdef DEBUG_UNASSIGNED - printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); -#endif -#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) - cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, 1); -#endif -} +static const MemoryRegionOps unassigned_mem_ops = { + .read = unassigned_mem_read, + .write = unassigned_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; -static void unassigned_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) +static uint64_t error_mem_read(void *opaque, target_phys_addr_t addr, + unsigned size) { -#ifdef DEBUG_UNASSIGNED - printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); -#endif -#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) - cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, 2); -#endif + abort(); } -static void unassigned_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) +static void error_mem_write(void *opaque, target_phys_addr_t addr, + uint64_t value, unsigned size) { -#ifdef DEBUG_UNASSIGNED - printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); -#endif -#if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) - cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, 4); -#endif + abort(); } -static CPUReadMemoryFunc * const unassigned_mem_read[3] = { - unassigned_mem_readb, - unassigned_mem_readw, - unassigned_mem_readl, +static const MemoryRegionOps error_mem_ops = { + .read = error_mem_read, + .write = error_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, }; -static CPUWriteMemoryFunc * const unassigned_mem_write[3] = { - unassigned_mem_writeb, - unassigned_mem_writew, - unassigned_mem_writel, +static const MemoryRegionOps rom_mem_ops = { + .read = error_mem_read, + .write = unassigned_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, }; -static void notdirty_mem_writeb(void *opaque, target_phys_addr_t ram_addr, - uint32_t val) +static void notdirty_mem_write(void *opaque, target_phys_addr_t ram_addr, + uint64_t val, unsigned size) { int dirty_flags; dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); if (!(dirty_flags & CODE_DIRTY_FLAG)) { #if !defined(CONFIG_USER_ONLY) - tb_invalidate_phys_page_fast(ram_addr, 1); + tb_invalidate_phys_page_fast(ram_addr, size); dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); #endif } - stb_p(qemu_get_ram_ptr(ram_addr), val); - dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); - cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); - /* we remove the notdirty callback only if the code has been - flushed */ - if (dirty_flags == 0xff) - tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); -} - -static void notdirty_mem_writew(void *opaque, target_phys_addr_t ram_addr, - uint32_t val) -{ - int dirty_flags; - dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); - if (!(dirty_flags & CODE_DIRTY_FLAG)) { -#if !defined(CONFIG_USER_ONLY) - tb_invalidate_phys_page_fast(ram_addr, 2); - dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); -#endif - } - stw_p(qemu_get_ram_ptr(ram_addr), val); - dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); - cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); - /* we remove the notdirty callback only if the code has been - flushed */ - if (dirty_flags == 0xff) - tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); -} - -static void notdirty_mem_writel(void *opaque, target_phys_addr_t ram_addr, - uint32_t val) -{ - int dirty_flags; - dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); - if (!(dirty_flags & CODE_DIRTY_FLAG)) { -#if !defined(CONFIG_USER_ONLY) - tb_invalidate_phys_page_fast(ram_addr, 4); - dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); -#endif + switch (size) { + case 1: + stb_p(qemu_get_ram_ptr(ram_addr), val); + break; + case 2: + stw_p(qemu_get_ram_ptr(ram_addr), val); + break; + case 4: + stl_p(qemu_get_ram_ptr(ram_addr), val); + break; + default: + abort(); } - stl_p(qemu_get_ram_ptr(ram_addr), val); dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); /* we remove the notdirty callback only if the code has been @@ -3237,16 +3190,10 @@ static void notdirty_mem_writel(void *opaque, target_phys_addr_t ram_addr, tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); } -static CPUReadMemoryFunc * const error_mem_read[3] = { - NULL, /* never used */ - NULL, /* never used */ - NULL, /* never used */ -}; - -static CPUWriteMemoryFunc * const notdirty_mem_write[3] = { - notdirty_mem_writeb, - notdirty_mem_writew, - notdirty_mem_writel, +static const MemoryRegionOps notdirty_mem_ops = { + .read = error_mem_read, + .write = notdirty_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, }; /* Generate a debug exception if a watchpoint has been hit. */ @@ -3492,7 +3439,7 @@ static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, mmio, start, end, idx, eidx, memory); #endif - if ((memory & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { + if ((memory & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) { memory = IO_MEM_SUBPAGE_RAM; } memory = (memory >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); @@ -3563,12 +3510,12 @@ static int cpu_register_io_memory_fixed(int io_index, } for (i = 0; i < 3; ++i) { - _io_mem_read[io_index][i] - = (mem_read[i] ? mem_read[i] : unassigned_mem_read[i]); + assert(mem_read[i]); + _io_mem_read[io_index][i] = mem_read[i]; } for (i = 0; i < 3; ++i) { - _io_mem_write[io_index][i] - = (mem_write[i] ? mem_write[i] : unassigned_mem_write[i]); + assert(mem_write[i]); + _io_mem_write[io_index][i] = mem_write[i]; } io_mem_opaque[io_index] = opaque; @@ -3588,8 +3535,8 @@ void cpu_unregister_io_memory(int io_table_address) int io_index = io_table_address >> IO_MEM_SHIFT; for (i=0;i < 3; i++) { - _io_mem_read[io_index][i] = unassigned_mem_read[i]; - _io_mem_write[io_index][i] = unassigned_mem_write[i]; + _io_mem_read[io_index][i] = NULL; + _io_mem_write[io_index][i] = NULL; } io_mem_opaque[io_index] = NULL; io_mem_used[io_index] = 0; @@ -3599,12 +3546,14 @@ static void io_mem_init(void) { int i; - cpu_register_io_memory_fixed(IO_MEM_ROM, error_mem_read, - unassigned_mem_write, NULL); - cpu_register_io_memory_fixed(IO_MEM_UNASSIGNED, unassigned_mem_read, - unassigned_mem_write, NULL); - cpu_register_io_memory_fixed(IO_MEM_NOTDIRTY, error_mem_read, - notdirty_mem_write, NULL); + /* Must be first: */ + memory_region_init_io(&io_mem_ram, &error_mem_ops, NULL, "ram", UINT64_MAX); + assert(io_mem_ram.ram_addr == 0); + memory_region_init_io(&io_mem_rom, &rom_mem_ops, NULL, "rom", UINT64_MAX); + memory_region_init_io(&io_mem_unassigned, &unassigned_mem_ops, NULL, + "unassigned", UINT64_MAX); + memory_region_init_io(&io_mem_notdirty, ¬dirty_mem_ops, NULL, + "notdirty", UINT64_MAX); cpu_register_io_memory_fixed(IO_MEM_SUBPAGE_RAM, subpage_ram_read, subpage_ram_write, NULL); for (i=0; i<5; i++) @@ -3698,7 +3647,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, pd = p.phys_offset; if (is_write) { - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { + if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { target_phys_addr_t addr1; io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); addr1 = (addr & ~TARGET_PAGE_MASK) + p.region_offset; @@ -3879,7 +3828,7 @@ void *cpu_physical_memory_map(target_phys_addr_t addr, p = phys_page_find(page >> TARGET_PAGE_BITS); pd = p.phys_offset; - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { + if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { if (todo || bounce.buffer) { break; } @@ -4150,7 +4099,7 @@ void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val) p = phys_page_find(addr >> TARGET_PAGE_BITS); pd = p.phys_offset; - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { + if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; io_mem_write(io_index, addr, val, 4); @@ -4181,7 +4130,7 @@ void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val) p = phys_page_find(addr >> TARGET_PAGE_BITS); pd = p.phys_offset; - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { + if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; #ifdef TARGET_WORDS_BIGENDIAN @@ -4210,7 +4159,7 @@ static inline void stl_phys_internal(target_phys_addr_t addr, uint32_t val, p = phys_page_find(addr >> TARGET_PAGE_BITS); pd = p.phys_offset; - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { + if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; #if defined(TARGET_WORDS_BIGENDIAN) @@ -4283,7 +4232,7 @@ static inline void stw_phys_internal(target_phys_addr_t addr, uint32_t val, p = phys_page_find(addr >> TARGET_PAGE_BITS); pd = p.phys_offset; - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { + if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; #if defined(TARGET_WORDS_BIGENDIAN) @@ -4514,7 +4463,8 @@ tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong addr) ldub_code(addr); } pd = env1->tlb_table[mmu_idx][page_index].addr_code & ~TARGET_PAGE_MASK; - if (pd != IO_MEM_RAM && pd != IO_MEM_ROM && !(pd & IO_MEM_ROMD)) { + if (pd != io_mem_ram.ram_addr && pd != io_mem_rom.ram_addr + && !(pd & IO_MEM_ROMD)) { #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SPARC) cpu_unassigned_access(env1, addr, 0, 1, 0, 4); #else |