sergey.fedo...@linaro.org writes:
> From: Sergey Fedorov <serge.f...@gmail.com>
>
> Initialize TB's direct jump list data fields and reset the jumps before
> tb_link_page() puts it into the physical hash table and the physical
> page list. So TB is completely initialized before it becomes visible.
>
> Signed-off-by: Sergey Fedorov <serge.f...@gmail.com>
> Signed-off-by: Sergey Fedorov <sergey.fedo...@linaro.org>
> ---
> translate-all.c | 27 ++++++++++++++-------------
> 1 file changed, 14 insertions(+), 13 deletions(-)
>
> diff --git a/translate-all.c b/translate-all.c
> index ca01dd325b8d..f68716e1819f 100644
> --- a/translate-all.c
> +++ b/translate-all.c
> @@ -1131,19 +1131,6 @@ static void tb_link_page(TranslationBlock *tb,
> tb_page_addr_t phys_pc,
> tb->page_addr[1] = -1;
> }
>
> - assert(((uintptr_t)tb & 3) == 0);
> - tb->jmp_list_first = (uintptr_t)tb | 2;
> - tb->jmp_list_next[0] = (uintptr_t)NULL;
> - tb->jmp_list_next[1] = (uintptr_t)NULL;
> -
> - /* init original jump addresses */
> - if (tb->jmp_reset_offset[0] != TB_JMP_RESET_OFFSET_INVALID) {
> - tb_reset_jump(tb, 0);
> - }
> - if (tb->jmp_reset_offset[1] != TB_JMP_RESET_OFFSET_INVALID) {
> - tb_reset_jump(tb, 1);
> - }
> -
> #ifdef DEBUG_TB_CHECK
> tb_page_check();
> #endif
> @@ -1251,6 +1238,20 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
> ROUND_UP((uintptr_t)gen_code_buf + gen_code_size + search_size,
> CODE_GEN_ALIGN);
>
> + /* init jump list */
> + assert(((uintptr_t)tb & 3) == 0);
> + tb->jmp_list_first = (uintptr_t)tb | 2;
> + tb->jmp_list_next[0] = (uintptr_t)NULL;
> + tb->jmp_list_next[1] = (uintptr_t)NULL;
maybe these should be further up the function with the other jmp setting code?
> +
> + /* init original jump addresses */
> + if (tb->jmp_reset_offset[0] != TB_JMP_RESET_OFFSET_INVALID) {
> + tb_reset_jump(tb, 0);
> + }
> + if (tb->jmp_reset_offset[1] != TB_JMP_RESET_OFFSET_INVALID) {
> + tb_reset_jump(tb, 1);
> + }
Why would tb->jmp_reset_offset[0] == TB_JMP_RESET_OFFSET_INVALID not be
the case as it is set a few lines further up.
> +
> /* check next page if needed */
> virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK;
> phys_page2 = -1;
--
Alex Bennée
