Spelling fixes, spotted by Stuart Brady.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4809 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/exec.c b/exec.c
index a664b6f..64c87b3 100644
--- a/exec.c
+++ b/exec.c
@@ -109,7 +109,7 @@
    cpu_exec() */
 CPUState *cpu_single_env;
 /* 0 = Do not count executed instructions.
-   1 = Precice instruction counting.
+   1 = Precise instruction counting.
    2 = Adaptive rate instruction counting.  */
 int use_icount = 0;
 /* Current instruction counter.  While executing translated code this may
@@ -1080,7 +1080,7 @@
 
 void tb_free(TranslationBlock *tb)
 {
-    /* In practice this is mostly used for single use temorary TB
+    /* In practice this is mostly used for single use temporary TB
        Ignore the hard cases and just back up if this TB happens to
        be the last one generated.  */
     if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) {
@@ -1394,7 +1394,7 @@
 
     old_mask = env->interrupt_request;
     /* FIXME: This is probably not threadsafe.  A different thread could
-       be in the mittle of a read-modify-write operation.  */
+       be in the middle of a read-modify-write operation.  */
     env->interrupt_request |= mask;
 #if defined(USE_NPTL)
     /* FIXME: TB unchaining isn't SMP safe.  For now just ignore the
@@ -3019,13 +3019,13 @@
     n = env->icount_decr.u16.low + tb->icount;
     cpu_restore_state(tb, env, (unsigned long)retaddr, NULL);
     /* Calculate how many instructions had been executed before the fault
-       occured.  */
+       occurred.  */
     n = n - env->icount_decr.u16.low;
     /* Generate a new TB ending on the I/O insn.  */
     n++;
     /* On MIPS and SH, delay slot instructions can only be restarted if
        they were already the first instruction in the TB.  If this is not
-       the first instruction in a TB then re-execute the preceeding
+       the first instruction in a TB then re-execute the preceding
        branch.  */
 #if defined(TARGET_MIPS)
     if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) {
@@ -3053,7 +3053,7 @@
     /* FIXME: In theory this could raise an exception.  In practice
        we have already translated the block once so it's probably ok.  */
     tb_gen_code(env, pc, cs_base, flags, cflags);
-    /* TODO: If env->pc != tb->pc (i.e. the failuting instruction was not
+    /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not
        the first in the TB) then we end up generating a whole new TB and
        repeating the fault, which is horribly inefficient.
        Better would be to execute just this insn uncached, or generate a