dirty flag changes

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1281 c046a42c-6fe2-441c-8c8c-71466251a162

4 files changed, 57 insertions, 23 deletions

diff --git a/cpu-all.h b/cpu-all.h
index 86430791d3..afc9ae1a41 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -109,9 +109,11 @@ static inline void tswap64s(uint64_t *s)
 #if TARGET_LONG_SIZE == 4
 #define tswapl(s) tswap32(s)
 #define tswapls(s) tswap32s((uint32_t *)(s))
+#define bswaptls(s) bswap32s(s)
 #else
 #define tswapl(s) tswap64(s)
 #define tswapls(s) tswap64s((uint64_t *)(s))
+#define bswaptls(s) bswap64s(s)
 #endif
 
 /* NOTE: arm FPA is horrible as double 32 bit words are stored in big
@@ -733,18 +735,27 @@ void stl_phys(target_phys_addr_t addr, uint32_t val);
 int cpu_memory_rw_debug(CPUState *env, target_ulong addr, 
                         uint8_t *buf, int len, int is_write);
 
+#define VGA_DIRTY_FLAG 0x01
+
 /* read dirty bit (return 0 or 1) */
 static inline int cpu_physical_memory_is_dirty(target_ulong addr)
 {
-    return phys_ram_dirty[addr >> TARGET_PAGE_BITS];
+    return phys_ram_dirty[addr >> TARGET_PAGE_BITS] == 0xff;
+}
+
+static inline int cpu_physical_memory_get_dirty(target_ulong addr, 
+                                                int dirty_flags)
+{
+    return phys_ram_dirty[addr >> TARGET_PAGE_BITS] & dirty_flags;
 }
 
 static inline void cpu_physical_memory_set_dirty(target_ulong addr)
 {
-    phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 1;
+    phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 0xff;
 }
 
-void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end);
+void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end,
+                                     int dirty_flags);
 
 void dump_exec_info(FILE *f,
                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
diff --git a/exec.c b/exec.c
index 48cbe85749..8fe166bb0b 100644
--- a/exec.c
+++ b/exec.c
@@ -110,7 +110,7 @@ unsigned long qemu_host_page_mask;
 
 /* XXX: for system emulation, it could just be an array */
 static PageDesc *l1_map[L1_SIZE];
-static PhysPageDesc *l1_phys_map[L1_SIZE];
+PhysPageDesc **l1_phys_map;
 
 #if !defined(CONFIG_USER_ONLY)
 static VirtPageDesc *l1_virt_map[L1_SIZE];
@@ -176,6 +176,8 @@ static void page_init(void)
 #if !defined(CONFIG_USER_ONLY)
     virt_valid_tag = 1;
 #endif
+    l1_phys_map = qemu_vmalloc(L1_SIZE * sizeof(PhysPageDesc *));
+    memset(l1_phys_map, 0, L1_SIZE * sizeof(PhysPageDesc *));
 }
 
 static inline PageDesc *page_find_alloc(unsigned int index)
@@ -211,7 +213,7 @@ static inline PhysPageDesc *phys_page_find_alloc(unsigned int index)
     p = *lp;
     if (!p) {
         /* allocate if not found */
-        p = qemu_malloc(sizeof(PhysPageDesc) * L2_SIZE);
+        p = qemu_vmalloc(sizeof(PhysPageDesc) * L2_SIZE);
         memset(p, 0, sizeof(PhysPageDesc) * L2_SIZE);
         *lp = p;
     }
@@ -1305,6 +1307,11 @@ void tlb_flush(CPUState *env, int flush_global)
 #if !defined(CONFIG_SOFTMMU)
     munmap((void *)MMAP_AREA_START, MMAP_AREA_END - MMAP_AREA_START);
 #endif
+#ifdef USE_KQEMU
+    if (env->kqemu_enabled) {
+        kqemu_flush(env, flush_global);
+    }
+#endif
     tlb_flush_count++;
 }
 
@@ -1362,6 +1369,11 @@ void tlb_flush_page(CPUState *env, target_ulong addr)
     if (addr < MMAP_AREA_END)
         munmap((void *)addr, TARGET_PAGE_SIZE);
 #endif
+#ifdef USE_KQEMU
+    if (env->kqemu_enabled) {
+        kqemu_flush_page(env, addr);
+    }
+#endif
 }
 
 static inline void tlb_protect_code1(CPUTLBEntry *tlb_entry, target_ulong addr)
@@ -1426,11 +1438,13 @@ static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry,
     }
 }
 
-void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end)
+void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end,
+                                     int dirty_flags)
 {
     CPUState *env;
     unsigned long length, start1;
-    int i;
+    int i, mask, len;
+    uint8_t *p;
 
     start &= TARGET_PAGE_MASK;
     end = TARGET_PAGE_ALIGN(end);
@@ -1438,7 +1452,11 @@ void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end)
     length = end - start;
     if (length == 0)
         return;
-    memset(phys_ram_dirty + (start >> TARGET_PAGE_BITS), 0, length >> TARGET_PAGE_BITS);
+    mask = ~dirty_flags;
+    p = phys_ram_dirty + (start >> TARGET_PAGE_BITS);
+    len = length >> TARGET_PAGE_BITS;
+    for(i = 0; i < len; i++)
+        p[i] &= mask;
 
     env = cpu_single_env;
     /* we modify the TLB cache so that the dirty bit will be set again
@@ -1497,7 +1515,7 @@ static inline void tlb_set_dirty(unsigned long addr, target_ulong vaddr)
     CPUState *env = cpu_single_env;
     int i;
 
-    phys_ram_dirty[(addr - (unsigned long)phys_ram_base) >> TARGET_PAGE_BITS] = 1;
+    phys_ram_dirty[(addr - (unsigned long)phys_ram_base) >> TARGET_PAGE_BITS] = 0xff;
 
     addr &= TARGET_PAGE_MASK;
     i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
@@ -1669,7 +1687,7 @@ int page_unprotect(unsigned long addr, unsigned long pc, void *puc)
         cpu_abort(cpu_single_env, "error mprotect addr=0x%lx prot=%d\n",
                   (unsigned long)addr, vp->prot);
     /* set the dirty bit */
-    phys_ram_dirty[vp->phys_addr >> TARGET_PAGE_BITS] = 1;
+    phys_ram_dirty[vp->phys_addr >> TARGET_PAGE_BITS] = 0xff;
     /* flush the code inside */
     tb_invalidate_phys_page(vp->phys_addr, pc, puc);
     return 1;
@@ -1887,7 +1905,7 @@ static void code_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
     tb_invalidate_phys_page_fast(phys_addr, 1);
 #endif
     stb_p((uint8_t *)(long)addr, val);
-    phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1;
+    phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 0xff;
 }
 
 static void code_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
@@ -1899,7 +1917,7 @@ static void code_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
     tb_invalidate_phys_page_fast(phys_addr, 2);
 #endif
     stw_p((uint8_t *)(long)addr, val);
-    phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1;
+    phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 0xff;
 }
 
 static void code_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
@@ -1911,7 +1929,7 @@ static void code_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
     tb_invalidate_phys_page_fast(phys_addr, 4);
 #endif
     stl_p((uint8_t *)(long)addr, val);
-    phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1;
+    phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 0xff;
 }
 
 static CPUReadMemoryFunc *code_mem_read[3] = {
@@ -1959,7 +1977,7 @@ static void io_mem_init(void)
     io_mem_nb = 5;
 
     /* alloc dirty bits array */
-    phys_ram_dirty = qemu_malloc(phys_ram_size >> TARGET_PAGE_BITS);
+    phys_ram_dirty = qemu_vmalloc(phys_ram_size >> TARGET_PAGE_BITS);
 }
 
 /* mem_read and mem_write are arrays of functions containing the
@@ -2098,7 +2116,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
                 /* invalidate code */
                 tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
                 /* set dirty bit */
-                phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] = 1;                
+                phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] = 0xff;
             }
         } else {
             if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
@@ -2219,7 +2237,7 @@ void stl_phys(target_phys_addr_t addr, uint32_t val)
         /* invalidate code */
         tb_invalidate_phys_page_range(addr1, addr1 + 4, 0);
         /* set dirty bit */
-        phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] = 1;
+        phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] = 0xff;
     }
 }
 
diff --git a/hw/tcx.c b/hw/tcx.c
index 6b55fc96af..6c4df7c89a 100644
--- a/hw/tcx.c
+++ b/hw/tcx.c
@@ -129,7 +129,7 @@ void tcx_update_display(void *opaque)
     }
     
     for(y = 0; y < YSZ; y += 4, page += TARGET_PAGE_SIZE) {
-	if (cpu_physical_memory_is_dirty(page)) {
+	if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
 	    if (y_start < 0)
                 y_start = y;
             if (page < page_min)
@@ -166,7 +166,8 @@ void tcx_update_display(void *opaque)
     }
     /* reset modified pages */
     if (page_max != -1) {
-        cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE);
+        cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
+                                        VGA_DIRTY_FLAG);
     }
 }
 
@@ -216,7 +217,8 @@ static void tcx_reset(void *opaque)
     memset(s->b, 0, 256);
     s->r[255] = s->g[255] = s->b[255] = 255;
     memset(s->vram, 0, MAXX*MAXY);
-    cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY);
+    cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY,
+                                    VGA_DIRTY_FLAG);
 }
 
 void *tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
diff --git a/hw/vga.c b/hw/vga.c
index db9e74f199..af463a1200 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -1454,11 +1454,13 @@ static void vga_draw_graphic(VGAState *s, int full_update)
         }
         page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
         page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
-        update = full_update | cpu_physical_memory_is_dirty(page0) |
-            cpu_physical_memory_is_dirty(page1);
+        update = full_update | 
+            cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
+            cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
         if ((page1 - page0) > TARGET_PAGE_SIZE) {
             /* if wide line, can use another page */
-            update |= cpu_physical_memory_is_dirty(page0 + TARGET_PAGE_SIZE);
+            update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE, 
+                                                    VGA_DIRTY_FLAG);
         }
         /* explicit invalidation for the hardware cursor */
         update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
@@ -1501,7 +1503,8 @@ static void vga_draw_graphic(VGAState *s, int full_update)
     }
     /* reset modified pages */
     if (page_max != -1) {
-        cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE);
+        cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
+                                        VGA_DIRTY_FLAG);
     }
     memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
 }