diff options
Diffstat (limited to 'exec.h')
| -rw-r--r-- | exec.h | 21 |
1 files changed, 12 insertions, 9 deletions
@@ -23,9 +23,9 @@ #define GEN_FLAG_SS32_SHIFT 2 #define GEN_FLAG_VM_SHIFT 3 #define GEN_FLAG_ST_SHIFT 4 -#define GEN_FLAG_CPL_SHIFT 7 -#define GEN_FLAG_IOPL_SHIFT 9 -#define GEN_FLAG_TF_SHIFT 11 +#define GEN_FLAG_TF_SHIFT 8 /* same position as eflags */ +#define GEN_FLAG_CPL_SHIFT 9 +#define GEN_FLAG_IOPL_SHIFT 12 /* same position as eflags */ struct TranslationBlock; int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size, @@ -150,12 +150,15 @@ static inline void tb_set_jmp_target(TranslationBlock *tb, static inline void tb_add_jump(TranslationBlock *tb, int n, TranslationBlock *tb_next) { - /* patch the native jump address */ - tb_set_jmp_target(tb, n, (unsigned long)tb_next->tc_ptr); - - /* add in TB jmp circular list */ - tb->jmp_next[n] = tb_next->jmp_first; - tb_next->jmp_first = (TranslationBlock *)((long)(tb) | (n)); + /* NOTE: this test is only needed for thread safety */ + if (!tb->jmp_next[n]) { + /* patch the native jump address */ + tb_set_jmp_target(tb, n, (unsigned long)tb_next->tc_ptr); + + /* add in TB jmp circular list */ + tb->jmp_next[n] = tb_next->jmp_first; + tb_next->jmp_first = (TranslationBlock *)((long)(tb) | (n)); + } } #ifndef offsetof |