diff options
Diffstat (limited to 'include/exec/exec-all.h')
| -rw-r--r-- | include/exec/exec-all.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index 445d946d84..64c2a660bc 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -277,14 +277,16 @@ struct TranslationBlock { * jmp_list_first points to the first TB jumping to this one. * jmp_list_next is used to point to the next TB in a list. * Since each TB can have two jumps, it can participate in two lists. - * The two least significant bits of a pointer are used to choose which - * data field holds a pointer to the next TB: + * jmp_list_first and jmp_list_next are 4-byte aligned pointers to a + * TranslationBlock structure, but the two least significant bits of + * them are used to encode which data field of the pointed TB should + * be used to traverse the list further from that TB: * 0 => jmp_list_next[0], 1 => jmp_list_next[1], 2 => jmp_list_first. * In other words, 0/1 tells which jump is used in the pointed TB, * and 2 means that this is a pointer back to the target TB of this list. */ - struct TranslationBlock *jmp_list_next[2]; - struct TranslationBlock *jmp_list_first; + uintptr_t jmp_list_next[2]; + uintptr_t jmp_list_first; }; #include "qemu/thread.h" @@ -382,7 +384,7 @@ static inline void tb_add_jump(TranslationBlock *tb, int n, /* add in TB jmp circular list */ tb->jmp_list_next[n] = tb_next->jmp_list_first; - tb_next->jmp_list_first = (TranslationBlock *)((uintptr_t)tb | n); + tb_next->jmp_list_first = (uintptr_t)tb | n; } } |