usb-ccid: better bulk_out error handling

[mirror_qemu.git] / translate-all.c

diff --git a/translate-all.c b/translate-all.c
index 01b1604130e0a8e4e2ae66f8cd9c23e8261394a4..5f44ec844e0b61d26c9a5a39a863a33ac5d5bb40 100644 (file)
--- a/translate-all.c
+++ b/translate-all.c
@@ -25,7 +25,7 @@
 #include "qemu-common.h"
 #define NO_CPU_IO_DEFS
 #include "cpu.h"
-#include "trace.h"
+#include "trace-root.h"
 #include "disas/disas.h"
 #include "exec/exec-all.h"
 #include "tcg.h"
@@ -753,7 +753,7 @@ static inline void *alloc_code_gen_buffer(void)
         size_t size2;
         void *buf2 = mmap(NULL, size + qemu_real_host_page_size,
                           PROT_NONE, flags, -1, 0);
-        switch (buf2 != MAP_FAILED) {
+        switch ((int)(buf2 != MAP_FAILED)) {
         case 1:
             if (!cross_256mb(buf2, size)) {
                 /* Success!  Use the new buffer.  */
@@ -1290,6 +1290,8 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
         /* flush must be done */
         tb_flush(cpu);
         mmap_unlock();
+        /* Make the execution loop process the flush as soon as possible.  */
+        cpu->exception_index = EXCP_INTERRUPT;
         cpu_loop_exit(cpu);
     }
 
@@ -1355,10 +1357,12 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
 #ifdef DEBUG_DISAS
     if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM) &&
         qemu_log_in_addr_range(tb->pc)) {
+        qemu_log_lock();
         qemu_log("OUT: [size=%d]\n", gen_code_size);
         log_disas(tb->tc_ptr, gen_code_size);
         qemu_log("\n");
         qemu_log_flush();
+        qemu_log_unlock();
     }
 #endif
 
@@ -1402,12 +1406,11 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
  * access: the virtual CPU will exit the current TB if code is modified inside
  * this TB.
  *
- * Called with mmap_lock held for user-mode emulation
+ * Called with mmap_lock held for user-mode emulation, grabs tb_lock
+ * Called with tb_lock held for system-mode emulation
  */
-void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end)
+static void tb_invalidate_phys_range_1(tb_page_addr_t start, tb_page_addr_t end)
 {
-    assert_memory_lock();
-
     while (start < end) {
         tb_invalidate_phys_page_range(start, end, 0);
         start &= TARGET_PAGE_MASK;
@@ -1415,6 +1418,21 @@ void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end)
     }
 }
 
+#ifdef CONFIG_SOFTMMU
+void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end)
+{
+    assert_tb_lock();
+    tb_invalidate_phys_range_1(start, end);
+}
+#else
+void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end)
+{
+    assert_memory_lock();
+    tb_lock();
+    tb_invalidate_phys_range_1(start, end);
+    tb_unlock();
+}
+#endif
 /*
  * Invalidate all TBs which intersect with the target physical address range
  * [start;end[. NOTE: start and end must refer to the *same* physical page.
@@ -1422,7 +1440,8 @@ void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end)
  * access: the virtual CPU will exit the current TB if code is modified inside
  * this TB.
  *
- * Called with mmap_lock held for user-mode emulation
+ * Called with tb_lock/mmap_lock held for user-mode emulation
+ * Called with tb_lock held for system-mode emulation
  */
 void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
                                    int is_cpu_write_access)
@@ -1445,6 +1464,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
 #endif /* TARGET_HAS_PRECISE_SMC */
 
     assert_memory_lock();
+    assert_tb_lock();
 
     p = page_find(start >> TARGET_PAGE_BITS);
     if (!p) {
@@ -1459,7 +1479,6 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
     /* we remove all the TBs in the range [start, end[ */
     /* XXX: see if in some cases it could be faster to invalidate all
        the code */
-    tb_lock();
     tb = p->first_tb;
     while (tb != NULL) {
         n = (uintptr_t)tb & 3;
@@ -1519,11 +1538,13 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
         cpu_loop_exit_noexc(cpu);
     }
 #endif
-    tb_unlock();
 }
 
 #ifdef CONFIG_SOFTMMU
-/* len must be <= 8 and start must be a multiple of len */
+/* len must be <= 8 and start must be a multiple of len.
+ * Called via softmmu_template.h when code areas are written to with
+ * tb_lock held.
+ */
 void tb_invalidate_phys_page_fast(tb_page_addr_t start, int len)
 {
     PageDesc *p;
@@ -1537,6 +1558,8 @@ void tb_invalidate_phys_page_fast(tb_page_addr_t start, int len)
                   (intptr_t)cpu_single_env->segs[R_CS].base);
     }
 #endif
+    assert_memory_lock();
+
     p = page_find(start >> TARGET_PAGE_BITS);
     if (!p) {
         return;
@@ -1584,6 +1607,8 @@ static bool tb_invalidate_phys_page(tb_page_addr_t addr, uintptr_t pc)
     uint32_t current_flags = 0;
 #endif
 
+    assert_memory_lock();
+
     addr &= TARGET_PAGE_MASK;
     p = page_find(addr >> TARGET_PAGE_BITS);
     if (!p) {
@@ -1687,7 +1712,9 @@ void tb_invalidate_phys_addr(AddressSpace *as, hwaddr addr)
         return;
     }
     ram_addr = memory_region_get_ram_addr(mr) + addr;
+    tb_lock();
     tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0);
+    tb_unlock();
     rcu_read_unlock();
 }
 #endif /* !defined(CONFIG_USER_ONLY) */