Re: [Qemu-devel] [PATCH] tcg: make tcg_const_ptr actually accept a pointer argument

["Andreas Färber" <andreas.faerber@web.de>]

Am 10.12.2011 17:35, schrieb Peter Maydell:
> Make tcg_const_ptr() include a cast so that you can pass it a
> pointer. This allows us to drop the casts we had in all the places
> that use this macro.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Acked-by: Andreas Färber <andreas.faerber@web.de>

At first the use of tcg_target_long seemed wrong to me, in case anyone
else is wondering, but it is in fact the type depending on
TCG_TARGET_REG_BITS not TARGET_LONG_BITS. (I'll have to fix my series.)

Andreas

> ---
> Minor cleanup; I have a patchset cooking that wants to use
> tcg_const_ptr(), which is why I noticed this infelicity.
> 
>  tcg/tcg-op.h |    6 +++---
>  tcg/tcg.h    |    4 ++--
>  2 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
> index 82e04e7..169d3b2 100644
> --- a/tcg/tcg-op.h
> +++ b/tcg/tcg-op.h
> @@ -389,7 +389,7 @@ static inline void tcg_gen_helperN(void *func, int flags, int sizemask,
>                                     TCGArg ret, int nargs, TCGArg *args)
>  {
>      TCGv_ptr fn;
> -    fn = tcg_const_ptr((tcg_target_long)func);
> +    fn = tcg_const_ptr(func);
>      tcg_gen_callN(&tcg_ctx, fn, flags, sizemask, ret,
>                    nargs, args);
>      tcg_temp_free_ptr(fn);
> @@ -405,7 +405,7 @@ static inline void tcg_gen_helper32(void *func, int sizemask, TCGv_i32 ret,
>  {
>      TCGv_ptr fn;
>      TCGArg args[2];
> -    fn = tcg_const_ptr((tcg_target_long)func);
> +    fn = tcg_const_ptr(func);
>      args[0] = GET_TCGV_I32(a);
>      args[1] = GET_TCGV_I32(b);
>      tcg_gen_callN(&tcg_ctx, fn, TCG_CALL_CONST | TCG_CALL_PURE, sizemask,
> @@ -418,7 +418,7 @@ static inline void tcg_gen_helper64(void *func, int sizemask, TCGv_i64 ret,
>  {
>      TCGv_ptr fn;
>      TCGArg args[2];
> -    fn = tcg_const_ptr((tcg_target_long)func);
> +    fn = tcg_const_ptr(func);
>      args[0] = GET_TCGV_I64(a);
>      args[1] = GET_TCGV_I64(b);
>      tcg_gen_callN(&tcg_ctx, fn, TCG_CALL_CONST | TCG_CALL_PURE, sizemask,
> diff --git a/tcg/tcg.h b/tcg/tcg.h
> index 175000f..5c28239 100644
> --- a/tcg/tcg.h
> +++ b/tcg/tcg.h
> @@ -544,7 +544,7 @@ void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
>  #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I32(n))
>  #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I32(GET_TCGV_PTR(n))
>  
> -#define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32(V))
> +#define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32((tcg_target_long)(V)))
>  #define tcg_global_reg_new_ptr(R, N) \
>      TCGV_NAT_TO_PTR(tcg_global_reg_new_i32((R), (N)))
>  #define tcg_global_mem_new_ptr(R, O, N) \
> @@ -555,7 +555,7 @@ void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
>  #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I64(n))
>  #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I64(GET_TCGV_PTR(n))
>  
> -#define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64(V))
> +#define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64((tcg_target_long)(V)))
>  #define tcg_global_reg_new_ptr(R, N) \
>      TCGV_NAT_TO_PTR(tcg_global_reg_new_i64((R), (N)))
>  #define tcg_global_mem_new_ptr(R, O, N) \