diff options
Diffstat (limited to 'accel/tcg/translator.c')
| -rw-r--r-- | accel/tcg/translator.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c index b0d0015c70..7a130e706e 100644 --- a/accel/tcg/translator.c +++ b/accel/tcg/translator.c @@ -12,20 +12,43 @@ #include "tcg/tcg.h" #include "tcg/tcg-op.h" #include "exec/exec-all.h" -#include "exec/gen-icount.h" #include "exec/log.h" #include "exec/translator.h" #include "exec/plugin-gen.h" #include "exec/replay-core.h" -void gen_io_start(void) +static void gen_io_start(void) { tcg_gen_st_i32(tcg_constant_i32(1), cpu_env, offsetof(ArchCPU, parent_obj.can_do_io) - offsetof(ArchCPU, env)); } +bool translator_io_start(DisasContextBase *db) +{ + uint32_t cflags = tb_cflags(db->tb); + + if (!(cflags & CF_USE_ICOUNT)) { + return false; + } + if (db->num_insns == db->max_insns && (cflags & CF_LAST_IO)) { + /* Already started in translator_loop. */ + return true; + } + + gen_io_start(); + + /* + * Ensure that this instruction will be the last in the TB. + * The target may override this to something more forceful. + */ + if (db->is_jmp == DISAS_NEXT) { + db->is_jmp = DISAS_TOO_MANY; + } + return true; +} + static TCGOp *gen_tb_start(uint32_t cflags) { TCGv_i32 count = tcg_temp_new_i32(); |