2012/6/29 Andreas Färber <afaer...@suse.de>:
> Am 29.06.2012 08:41, schrieb Dunrong Huang:
>> Commit c4baa0503d9623f1ce891f525ccd140c598bc29a improved SSE table type
>> safety but raises compile error of incompatible pointer type.
>
> What's the difference between the signatures?
>
The SSEFunc_0_pi is declared as:
typedef void (*SSEFunc_0_pi)(TCGv_ptr reg, TCGv_i32 val);
gen_helper_cvtsi2ss is defined as(By preprocessed source code(GCC -E):
static inline void gen_helper_cvtsi2ss( TCGv_ptr arg1, TCGv_i32 arg2)
And gen_helper_cvtsq2ss is defined as(By preprocessed source code(GCC -E):
static inline void gen_helper_cvtsq2ss( TCGv_ptr arg1, TCGv_i64 arg2)
So the type of gen_helper_cvtsq2ss is not SSEFunc_0_pi.
But from tcg/tcg.h,
typedef struct
{
int i32;
} TCGv_i32;
typedef struct
{
int i64;
} TCGv_i64;
We know that TCGv_i32 and TCGv_i64 have same members, their contents is same.
So casting gen_helper_cvtsq2ss as SSEFunc_0_pi will work.
And similarly for the others.
--
Best Regards,
Dunrong Huang
