diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 218 |
1 files changed, 120 insertions, 98 deletions
@@ -138,6 +138,7 @@ typedef struct subpage_t { static void io_mem_init(void); static void memory_map_init(void); +static void tcg_commit(MemoryListener *listener); static MemoryRegion io_mem_watch; #endif @@ -325,7 +326,7 @@ address_space_translate_internal(AddressSpaceDispatch *d, hwaddr addr, hwaddr *x hwaddr *plen, bool resolve_subpage) { MemoryRegionSection *section; - Int128 diff, diff_page; + Int128 diff; section = address_space_lookup_region(d, addr, resolve_subpage); /* Compute offset within MemoryRegionSection */ @@ -334,13 +335,23 @@ address_space_translate_internal(AddressSpaceDispatch *d, hwaddr addr, hwaddr *x /* Compute offset within MemoryRegion */ *xlat = addr + section->offset_within_region; - diff_page = int128_make64(((addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE) - addr); diff = int128_sub(section->mr->size, int128_make64(addr)); - diff = int128_min(diff, diff_page); *plen = int128_get64(int128_min(diff, int128_make64(*plen))); return section; } +static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write) +{ + if (memory_region_is_ram(mr)) { + return !(is_write && mr->readonly); + } + if (memory_region_is_romd(mr)) { + return !is_write; + } + + return false; +} + MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr, hwaddr *xlat, hwaddr *plen, bool is_write) @@ -351,7 +362,7 @@ MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr, hwaddr len = *plen; for (;;) { - section = address_space_translate_internal(as->dispatch, addr, &addr, &len, true); + section = address_space_translate_internal(as->dispatch, addr, &addr, plen, true); mr = section->mr; if (!mr->iommu_ops) { @@ -370,6 +381,11 @@ MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr, as = iotlb.target_as; } + if (memory_access_is_direct(mr, is_write)) { + hwaddr page = ((addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE) - addr; + len = MIN(page, len); + } + *plen = len; *xlat = addr; return mr; @@ -438,6 +454,22 @@ CPUState *qemu_get_cpu(int index) return NULL; } +#if !defined(CONFIG_USER_ONLY) +void tcg_cpu_address_space_init(CPUState *cpu, AddressSpace *as) +{ + /* We only support one address space per cpu at the moment. */ + assert(cpu->as == as); + + if (cpu->tcg_as_listener) { + memory_listener_unregister(cpu->tcg_as_listener); + } else { + cpu->tcg_as_listener = g_new0(MemoryListener, 1); + } + cpu->tcg_as_listener->commit = tcg_commit; + memory_listener_register(cpu->tcg_as_listener, as); +} +#endif + void cpu_exec_init(CPUArchState *env) { CPUState *cpu = ENV_GET_CPU(env); @@ -457,6 +489,7 @@ void cpu_exec_init(CPUArchState *env) QTAILQ_INIT(&env->breakpoints); QTAILQ_INIT(&env->watchpoints); #ifndef CONFIG_USER_ONLY + cpu->as = &address_space_memory; cpu->thread_id = qemu_get_thread_id(); #endif QTAILQ_INSERT_TAIL(&cpus, cpu, node); @@ -488,7 +521,8 @@ static void breakpoint_invalidate(CPUState *cpu, target_ulong pc) { hwaddr phys = cpu_get_phys_page_debug(cpu, pc); if (phys != -1) { - tb_invalidate_phys_addr(phys | (pc & ~TARGET_PAGE_MASK)); + tb_invalidate_phys_addr(cpu->as, + phys | (pc & ~TARGET_PAGE_MASK)); } } #endif @@ -780,7 +814,7 @@ hwaddr memory_region_section_get_iotlb(CPUArchState *env, iotlb |= PHYS_SECTION_ROM; } } else { - iotlb = section - address_space_memory.dispatch->map.sections; + iotlb = section - section->address_space->dispatch->map.sections; iotlb += xlat; } @@ -876,6 +910,7 @@ static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *secti if (!(existing->mr->subpage)) { subpage = subpage_init(d->as, base); + subsection.address_space = d->as; subsection.mr = &subpage->iomem; phys_page_set(d, base >> TARGET_PAGE_BITS, 1, phys_section_add(&d->map, &subsection)); @@ -1577,9 +1612,9 @@ static uint64_t watch_mem_read(void *opaque, hwaddr addr, { check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); switch (size) { - case 1: return ldub_phys(addr); - case 2: return lduw_phys(addr); - case 4: return ldl_phys(addr); + case 1: return ldub_phys(&address_space_memory, addr); + case 2: return lduw_phys(&address_space_memory, addr); + case 4: return ldl_phys(&address_space_memory, addr); default: abort(); } } @@ -1590,13 +1625,13 @@ static void watch_mem_write(void *opaque, hwaddr addr, check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); switch (size) { case 1: - stb_phys(addr, val); + stb_phys(&address_space_memory, addr, val); break; case 2: - stw_phys(addr, val); + stw_phys(&address_space_memory, addr, val); break; case 4: - stl_phys(addr, val); + stl_phys(&address_space_memory, addr, val); break; default: abort(); } @@ -1721,6 +1756,7 @@ static subpage_t *subpage_init(AddressSpace *as, hwaddr base) static uint16_t dummy_section(PhysPageMap *map, MemoryRegion *mr) { MemoryRegionSection section = { + .address_space = &address_space_memory, .mr = mr, .offset_within_address_space = 0, .offset_within_region = 0, @@ -1730,10 +1766,9 @@ static uint16_t dummy_section(PhysPageMap *map, MemoryRegion *mr) return phys_section_add(map, §ion); } -MemoryRegion *iotlb_to_region(hwaddr index) +MemoryRegion *iotlb_to_region(AddressSpace *as, hwaddr index) { - return address_space_memory.dispatch->map.sections[ - index & ~TARGET_PAGE_MASK].mr; + return as->dispatch->map.sections[index & ~TARGET_PAGE_MASK].mr; } static void io_mem_init(void) @@ -1793,6 +1828,11 @@ static void tcg_commit(MemoryListener *listener) CPU_FOREACH(cpu) { CPUArchState *env = cpu->env_ptr; + /* FIXME: Disentangle the cpu.h circular files deps so we can + directly get the right CPU from listener. */ + if (cpu->tcg_as_listener != listener) { + continue; + } tlb_flush(env, 1); } } @@ -1813,10 +1853,6 @@ static MemoryListener core_memory_listener = { .priority = 1, }; -static MemoryListener tcg_memory_listener = { - .commit = tcg_commit, -}; - void address_space_init_dispatch(AddressSpace *as) { as->dispatch = NULL; @@ -1852,9 +1888,6 @@ static void memory_map_init(void) address_space_init(&address_space_io, system_io, "I/O"); memory_listener_register(&core_memory_listener, &address_space_memory); - if (tcg_enabled()) { - memory_listener_register(&tcg_memory_listener, &address_space_memory); - } } MemoryRegion *get_system_memory(void) @@ -1925,18 +1958,6 @@ static void invalidate_and_set_dirty(hwaddr addr, xen_modified_memory(addr, length); } -static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write) -{ - if (memory_region_is_ram(mr)) { - return !(is_write && mr->readonly); - } - if (memory_region_is_romd(mr)) { - return !is_write; - } - - return false; -} - static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr) { unsigned access_size_max = mr->ops->valid.max_access_size; @@ -2081,7 +2102,7 @@ enum write_rom_type { FLUSH_CACHE, }; -static inline void cpu_physical_memory_write_rom_internal( +static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, hwaddr addr, const uint8_t *buf, int len, enum write_rom_type type) { hwaddr l; @@ -2091,8 +2112,7 @@ static inline void cpu_physical_memory_write_rom_internal( while (len > 0) { l = len; - mr = address_space_translate(&address_space_memory, - addr, &addr1, &l, true); + mr = address_space_translate(as, addr, &addr1, &l, true); if (!(memory_region_is_ram(mr) || memory_region_is_romd(mr))) { @@ -2118,10 +2138,10 @@ static inline void cpu_physical_memory_write_rom_internal( } /* used for ROM loading : can write in RAM and ROM */ -void cpu_physical_memory_write_rom(hwaddr addr, +void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr, const uint8_t *buf, int len) { - cpu_physical_memory_write_rom_internal(addr, buf, len, WRITE_DATA); + cpu_physical_memory_write_rom_internal(as, addr, buf, len, WRITE_DATA); } void cpu_flush_icache_range(hwaddr start, int len) @@ -2136,7 +2156,8 @@ void cpu_flush_icache_range(hwaddr start, int len) return; } - cpu_physical_memory_write_rom_internal(start, NULL, len, FLUSH_CACHE); + cpu_physical_memory_write_rom_internal(&address_space_memory, + start, NULL, len, FLUSH_CACHE); } typedef struct { @@ -2327,7 +2348,7 @@ void cpu_physical_memory_unmap(void *buffer, hwaddr len, } /* warning: addr must be aligned */ -static inline uint32_t ldl_phys_internal(hwaddr addr, +static inline uint32_t ldl_phys_internal(AddressSpace *as, hwaddr addr, enum device_endian endian) { uint8_t *ptr; @@ -2336,8 +2357,7 @@ static inline uint32_t ldl_phys_internal(hwaddr addr, hwaddr l = 4; hwaddr addr1; - mr = address_space_translate(&address_space_memory, addr, &addr1, &l, - false); + mr = address_space_translate(as, addr, &addr1, &l, false); if (l < 4 || !memory_access_is_direct(mr, false)) { /* I/O case */ io_mem_read(mr, addr1, &val, 4); @@ -2370,23 +2390,23 @@ static inline uint32_t ldl_phys_internal(hwaddr addr, return val; } -uint32_t ldl_phys(hwaddr addr) +uint32_t ldl_phys(AddressSpace *as, hwaddr addr) { - return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); + return ldl_phys_internal(as, addr, DEVICE_NATIVE_ENDIAN); } -uint32_t ldl_le_phys(hwaddr addr) +uint32_t ldl_le_phys(AddressSpace *as, hwaddr addr) { - return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); + return ldl_phys_internal(as, addr, DEVICE_LITTLE_ENDIAN); } -uint32_t ldl_be_phys(hwaddr addr) +uint32_t ldl_be_phys(AddressSpace *as, hwaddr addr) { - return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); + return ldl_phys_internal(as, addr, DEVICE_BIG_ENDIAN); } /* warning: addr must be aligned */ -static inline uint64_t ldq_phys_internal(hwaddr addr, +static inline uint64_t ldq_phys_internal(AddressSpace *as, hwaddr addr, enum device_endian endian) { uint8_t *ptr; @@ -2395,7 +2415,7 @@ static inline uint64_t ldq_phys_internal(hwaddr addr, hwaddr l = 8; hwaddr addr1; - mr = address_space_translate(&address_space_memory, addr, &addr1, &l, + mr = address_space_translate(as, addr, &addr1, &l, false); if (l < 8 || !memory_access_is_direct(mr, false)) { /* I/O case */ @@ -2429,31 +2449,31 @@ static inline uint64_t ldq_phys_internal(hwaddr addr, return val; } -uint64_t ldq_phys(hwaddr addr) +uint64_t ldq_phys(AddressSpace *as, hwaddr addr) { - return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); + return ldq_phys_internal(as, addr, DEVICE_NATIVE_ENDIAN); } -uint64_t ldq_le_phys(hwaddr addr) +uint64_t ldq_le_phys(AddressSpace *as, hwaddr addr) { - return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); + return ldq_phys_internal(as, addr, DEVICE_LITTLE_ENDIAN); } -uint64_t ldq_be_phys(hwaddr addr) +uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr) { - return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); + return ldq_phys_internal(as, addr, DEVICE_BIG_ENDIAN); } /* XXX: optimize */ -uint32_t ldub_phys(hwaddr addr) +uint32_t ldub_phys(AddressSpace *as, hwaddr addr) { uint8_t val; - cpu_physical_memory_read(addr, &val, 1); + address_space_rw(as, addr, &val, 1, 0); return val; } /* warning: addr must be aligned */ -static inline uint32_t lduw_phys_internal(hwaddr addr, +static inline uint32_t lduw_phys_internal(AddressSpace *as, hwaddr addr, enum device_endian endian) { uint8_t *ptr; @@ -2462,7 +2482,7 @@ static inline uint32_t lduw_phys_internal(hwaddr addr, hwaddr l = 2; hwaddr addr1; - mr = address_space_translate(&address_space_memory, addr, &addr1, &l, + mr = address_space_translate(as, addr, &addr1, &l, false); if (l < 2 || !memory_access_is_direct(mr, false)) { /* I/O case */ @@ -2496,32 +2516,32 @@ static inline uint32_t lduw_phys_internal(hwaddr addr, return val; } -uint32_t lduw_phys(hwaddr addr) +uint32_t lduw_phys(AddressSpace *as, hwaddr addr) { - return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); + return lduw_phys_internal(as, addr, DEVICE_NATIVE_ENDIAN); } -uint32_t lduw_le_phys(hwaddr addr) +uint32_t lduw_le_phys(AddressSpace *as, hwaddr addr) { - return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); + return lduw_phys_internal(as, addr, DEVICE_LITTLE_ENDIAN); } -uint32_t lduw_be_phys(hwaddr addr) +uint32_t lduw_be_phys(AddressSpace *as, hwaddr addr) { - return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); + return lduw_phys_internal(as, addr, DEVICE_BIG_ENDIAN); } /* warning: addr must be aligned. The ram page is not masked as dirty and the code inside is not invalidated. It is useful if the dirty bits are used to track modified PTEs */ -void stl_phys_notdirty(hwaddr addr, uint32_t val) +void stl_phys_notdirty(AddressSpace *as, hwaddr addr, uint32_t val) { uint8_t *ptr; MemoryRegion *mr; hwaddr l = 4; hwaddr addr1; - mr = address_space_translate(&address_space_memory, addr, &addr1, &l, + mr = address_space_translate(as, addr, &addr1, &l, true); if (l < 4 || !memory_access_is_direct(mr, true)) { io_mem_write(mr, addr1, val, 4); @@ -2544,7 +2564,8 @@ void stl_phys_notdirty(hwaddr addr, uint32_t val) } /* warning: addr must be aligned */ -static inline void stl_phys_internal(hwaddr addr, uint32_t val, +static inline void stl_phys_internal(AddressSpace *as, + hwaddr addr, uint32_t val, enum device_endian endian) { uint8_t *ptr; @@ -2552,7 +2573,7 @@ static inline void stl_phys_internal(hwaddr addr, uint32_t val, hwaddr l = 4; hwaddr addr1; - mr = address_space_translate(&address_space_memory, addr, &addr1, &l, + mr = address_space_translate(as, addr, &addr1, &l, true); if (l < 4 || !memory_access_is_direct(mr, true)) { #if defined(TARGET_WORDS_BIGENDIAN) @@ -2584,30 +2605,31 @@ static inline void stl_phys_internal(hwaddr addr, uint32_t val, } } -void stl_phys(hwaddr addr, uint32_t val) +void stl_phys(AddressSpace *as, hwaddr addr, uint32_t val) { - stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); + stl_phys_internal(as, addr, val, DEVICE_NATIVE_ENDIAN); } -void stl_le_phys(hwaddr addr, uint32_t val) +void stl_le_phys(AddressSpace *as, hwaddr addr, uint32_t val) { - stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); + stl_phys_internal(as, addr, val, DEVICE_LITTLE_ENDIAN); } -void stl_be_phys(hwaddr addr, uint32_t val) +void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val) { - stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); + stl_phys_internal(as, addr, val, DEVICE_BIG_ENDIAN); } /* XXX: optimize */ -void stb_phys(hwaddr addr, uint32_t val) +void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val) { uint8_t v = val; - cpu_physical_memory_write(addr, &v, 1); + address_space_rw(as, addr, &v, 1, 1); } /* warning: addr must be aligned */ -static inline void stw_phys_internal(hwaddr addr, uint32_t val, +static inline void stw_phys_internal(AddressSpace *as, + hwaddr addr, uint32_t val, enum device_endian endian) { uint8_t *ptr; @@ -2615,8 +2637,7 @@ static inline void stw_phys_internal(hwaddr addr, uint32_t val, hwaddr l = 2; hwaddr addr1; - mr = address_space_translate(&address_space_memory, addr, &addr1, &l, - true); + mr = address_space_translate(as, addr, &addr1, &l, true); if (l < 2 || !memory_access_is_direct(mr, true)) { #if defined(TARGET_WORDS_BIGENDIAN) if (endian == DEVICE_LITTLE_ENDIAN) { @@ -2647,38 +2668,38 @@ static inline void stw_phys_internal(hwaddr addr, uint32_t val, } } -void stw_phys(hwaddr addr, uint32_t val) +void stw_phys(AddressSpace *as, hwaddr addr, uint32_t val) { - stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); + stw_phys_internal(as, addr, val, DEVICE_NATIVE_ENDIAN); } -void stw_le_phys(hwaddr addr, uint32_t val) +void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val) { - stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); + stw_phys_internal(as, addr, val, DEVICE_LITTLE_ENDIAN); } -void stw_be_phys(hwaddr addr, uint32_t val) +void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val) { - stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); + stw_phys_internal(as, addr, val, DEVICE_BIG_ENDIAN); } /* XXX: optimize */ -void stq_phys(hwaddr addr, uint64_t val) +void stq_phys(AddressSpace *as, hwaddr addr, uint64_t val) { val = tswap64(val); - cpu_physical_memory_write(addr, &val, 8); + address_space_rw(as, addr, (void *) &val, 8, 1); } -void stq_le_phys(hwaddr addr, uint64_t val) +void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val) { val = cpu_to_le64(val); - cpu_physical_memory_write(addr, &val, 8); + address_space_rw(as, addr, (void *) &val, 8, 1); } -void stq_be_phys(hwaddr addr, uint64_t val) +void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val) { val = cpu_to_be64(val); - cpu_physical_memory_write(addr, &val, 8); + address_space_rw(as, addr, (void *) &val, 8, 1); } /* virtual memory access for debug (includes writing to ROM) */ @@ -2699,10 +2720,11 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, if (l > len) l = len; phys_addr += (addr & ~TARGET_PAGE_MASK); - if (is_write) - cpu_physical_memory_write_rom(phys_addr, buf, l); - else - cpu_physical_memory_rw(phys_addr, buf, l, is_write); + if (is_write) { + cpu_physical_memory_write_rom(cpu->as, phys_addr, buf, l); + } else { + address_space_rw(cpu->as, phys_addr, buf, l, 0); + } len -= l; buf += l; addr += l; |