Re: [PATCH v2 09/10] tcg/loongarch64: Use tcg_pcrel_diff in tcg_out_ldst

[WANG Xuerui]

On 1/18/23 09:11, Richard Henderson wrote:
> Take the w^x split into account when computing the
> pc-relative distance to an absolute pointer.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   tcg/loongarch64/tcg-target.c.inc | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
> index 29d75c80eb..d6926bdb83 100644
> --- a/tcg/loongarch64/tcg-target.c.inc
> +++ b/tcg/loongarch64/tcg-target.c.inc
> @@ -702,7 +702,7 @@ static void tcg_out_ldst(TCGContext *s, LoongArchInsn opc, 
> TCGReg data,
>       intptr_t imm12 = sextreg(offset, 0, 12);
>   
>       if (offset != imm12) {
> -        intptr_t diff = offset - (uintptr_t)s->code_ptr;
> +        intptr_t diff = tcg_pcrel_diff(s, (void *)offset);
>   
>           if (addr == TCG_REG_ZERO && diff == (int32_t)diff) {
>               imm12 = sextreg(diff, 0, 12);

Reviewed-by: WANG Xuerui <git@xen0n.name>

Thanks for the catch!