diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -109,7 +109,7 @@ CPUState *first_cpu; 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 @@ TranslationBlock *tb_alloc(target_ulong pc) 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 @@ void cpu_interrupt(CPUState *env, int mask) 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 @@ void cpu_io_recompile(CPUState *env, void *retaddr) 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 @@ void cpu_io_recompile(CPUState *env, void *retaddr) /* 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 |