mirror of https://gitee.com/openkylin/qemu.git
exec: make phys_page_find() return a temporary
Instead of returning a PhysPageDesc pointer, return a temporary. This lets us move away from actually storing PhysPageDesc's, and instead sythesising them when needed. Signed-off-by: Avi Kivity <avi@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Avi Kivity
parent
be675c9720
commit
f1f6e3b86e
148
exec.c
148
exec.c
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@ -438,9 +438,18 @@ static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc)
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return pd + (index & (L2_SIZE - 1));
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}
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static inline PhysPageDesc *phys_page_find(target_phys_addr_t index)
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static inline PhysPageDesc phys_page_find(target_phys_addr_t index)
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{
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return phys_page_find_alloc(index, 0);
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PhysPageDesc *p = phys_page_find_alloc(index, 0);
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if (p) {
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return *p;
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} else {
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return (PhysPageDesc) {
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.phys_offset = IO_MEM_UNASSIGNED,
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.region_offset = index << TARGET_PAGE_BITS,
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};
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}
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}
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static void tlb_protect_code(ram_addr_t ram_addr);
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@ -1402,15 +1411,11 @@ static void breakpoint_invalidate(CPUState *env, target_ulong pc)
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target_phys_addr_t addr;
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target_ulong pd;
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ram_addr_t ram_addr;
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PhysPageDesc *p;
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PhysPageDesc p;
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addr = cpu_get_phys_page_debug(env, pc);
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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ram_addr = (pd & TARGET_PAGE_MASK) | (pc & ~TARGET_PAGE_MASK);
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tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0);
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}
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@ -2086,7 +2091,7 @@ void tlb_set_page(CPUState *env, target_ulong vaddr,
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target_phys_addr_t paddr, int prot,
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int mmu_idx, target_ulong size)
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{
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PhysPageDesc *p;
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PhysPageDesc p;
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unsigned long pd;
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unsigned int index;
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target_ulong address;
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@ -2101,11 +2106,7 @@ void tlb_set_page(CPUState *env, target_ulong vaddr,
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tlb_add_large_page(env, vaddr, size);
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}
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p = phys_page_find(paddr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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#if defined(DEBUG_TLB)
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printf("tlb_set_page: vaddr=" TARGET_FMT_lx " paddr=0x" TARGET_FMT_plx
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" prot=%x idx=%d pd=0x%08lx\n",
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@ -2133,11 +2134,7 @@ void tlb_set_page(CPUState *env, target_ulong vaddr,
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We can't use the high bits of pd for this because
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IO_MEM_ROMD uses these as a ram address. */
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iotlb = (pd & ~TARGET_PAGE_MASK);
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if (p) {
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iotlb += p->region_offset;
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} else {
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iotlb += paddr;
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}
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iotlb += p.region_offset;
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}
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code_address = address;
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@ -2523,7 +2520,7 @@ void cpu_register_physical_memory_log(target_phys_addr_t start_addr,
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addr = start_addr;
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do {
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 0);
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if (p && p->phys_offset != IO_MEM_UNASSIGNED) {
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ram_addr_t orig_memory = p->phys_offset;
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target_phys_addr_t start_addr2, end_addr2;
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@ -3680,7 +3677,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
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uint32_t val;
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target_phys_addr_t page;
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ram_addr_t pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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while (len > 0) {
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page = addr & TARGET_PAGE_MASK;
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@ -3688,18 +3685,13 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
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if (l > len)
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l = len;
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p = phys_page_find(page >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if (is_write) {
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
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target_phys_addr_t addr1 = addr;
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target_phys_addr_t addr1;
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr1 = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr1 = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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/* XXX: could force cpu_single_env to NULL to avoid
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potential bugs */
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if (l >= 4 && ((addr1 & 3) == 0)) {
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@ -3736,11 +3728,10 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
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} else {
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if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
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!(pd & IO_MEM_ROMD)) {
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target_phys_addr_t addr1 = addr;
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target_phys_addr_t addr1;
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/* I/O case */
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr1 = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr1 = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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if (l >= 4 && ((addr1 & 3) == 0)) {
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/* 32 bit read access */
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val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr1);
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@ -3778,7 +3769,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr,
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uint8_t *ptr;
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target_phys_addr_t page;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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while (len > 0) {
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page = addr & TARGET_PAGE_MASK;
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@ -3786,11 +3777,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr,
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if (l > len)
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l = len;
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p = phys_page_find(page >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM &&
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(pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM &&
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@ -3872,7 +3859,7 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
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int l;
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target_phys_addr_t page;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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ram_addr_t raddr = RAM_ADDR_MAX;
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ram_addr_t rlen;
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void *ret;
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@ -3883,11 +3870,7 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
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if (l > len)
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l = len;
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p = phys_page_find(page >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
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if (todo || bounce.buffer) {
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@ -3964,21 +3947,16 @@ static inline uint32_t ldl_phys_internal(target_phys_addr_t addr,
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uint8_t *ptr;
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uint32_t val;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
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!(pd & IO_MEM_ROMD)) {
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/* I/O case */
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr);
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#if defined(TARGET_WORDS_BIGENDIAN)
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if (endian == DEVICE_LITTLE_ENDIAN) {
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@ -4031,21 +4009,16 @@ static inline uint64_t ldq_phys_internal(target_phys_addr_t addr,
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uint8_t *ptr;
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uint64_t val;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
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!(pd & IO_MEM_ROMD)) {
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/* I/O case */
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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/* XXX This is broken when device endian != cpu endian.
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Fix and add "endian" variable check */
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@ -4106,21 +4079,16 @@ static inline uint32_t lduw_phys_internal(target_phys_addr_t addr,
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uint8_t *ptr;
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uint64_t val;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
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!(pd & IO_MEM_ROMD)) {
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/* I/O case */
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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val = io_mem_read[io_index][1](io_mem_opaque[io_index], addr);
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#if defined(TARGET_WORDS_BIGENDIAN)
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if (endian == DEVICE_LITTLE_ENDIAN) {
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@ -4173,19 +4141,14 @@ void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val)
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int io_index;
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uint8_t *ptr;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val);
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} else {
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unsigned long addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK);
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@ -4209,19 +4172,14 @@ void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val)
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int io_index;
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uint8_t *ptr;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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#ifdef TARGET_WORDS_BIGENDIAN
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io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val >> 32);
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io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val);
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@ -4243,19 +4201,14 @@ static inline void stl_phys_internal(target_phys_addr_t addr, uint32_t val,
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int io_index;
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uint8_t *ptr;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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#if defined(TARGET_WORDS_BIGENDIAN)
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if (endian == DEVICE_LITTLE_ENDIAN) {
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val = bswap32(val);
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@ -4321,19 +4274,14 @@ static inline void stw_phys_internal(target_phys_addr_t addr, uint32_t val,
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int io_index;
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uint8_t *ptr;
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unsigned long pd;
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PhysPageDesc *p;
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PhysPageDesc p;
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p = phys_page_find(addr >> TARGET_PAGE_BITS);
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if (!p) {
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pd = IO_MEM_UNASSIGNED;
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} else {
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pd = p->phys_offset;
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}
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pd = p.phys_offset;
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if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
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io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
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if (p)
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addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset;
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addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset;
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#if defined(TARGET_WORDS_BIGENDIAN)
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if (endian == DEVICE_LITTLE_ENDIAN) {
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val = bswap16(val);
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