On 3/27/15 08:05, Chen Gang wrote:
> For misalignment memory access, c6x gcc will cause issue, so need remove
> "clobber (match_scratch ...)" which will be symmetric with "movmisalign
> <mode>_load", then pass compiling and generate correct assembly code.
>
> The related issue:
>
> [root@localhost c6x]# cat test.i
> int oxu_driver_init(void)
> {
> *(volatile unsigned int *)(-1) = *(unsigned int *)(-1);
Oh, sorry, I use 11 instead of -1 for generating the assembly code (-1
and 11 lead the same result).
[...]
> oxu_driver_init:
> mvk .d1 11, A4
> ldnw .d1t1 *A4, A3
> nop 4
> stnw .d1t1 A3, *A4
> ret .s2 B3
> nop 5
> .size oxu_driver_init, .-oxu_driver_init
> .ident "GCC: (GNU) 5.0.0 20150321 (experimental)"
>
[...]
Thanks.
--
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
