URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [hal/] [openrisc/] [arch/] [current/] [src/] [hal_misc.c] - Diff between revs 786 and 790

Rev 786	Rev 790
Line 173...	Line 173...

`} // cyg_hal_invoke_constructors()`	`} // cyg_hal_invoke_constructors()`

`/------------------------------------------------------------------------/`	`/------------------------------------------------------------------------/`
`/* Determine the index of the ls bit of the supplied mask. */`	`/* Determine the index of the ls bit of the supplied mask. */`
	`//TODO can we use l.ff1 ?`
`cyg_uint32 hal_lsbit_index(cyg_uint32 mask)`	`cyg_uint32 hal_lsbit_index(cyg_uint32 mask)`
`{`	`{`
`cyg_uint32 n = mask;`	`cyg_uint32 n = mask;`

`static const signed char tab[64] =`	`static const signed char tab[64] =`
Line 195...	Line 195...
`return tab[n>>26];`	`return tab[n>>26];`
`}`	`}`

`/------------------------------------------------------------------------/`	`/------------------------------------------------------------------------/`
`/* Determine the index of the ms bit of the supplied mask. */`	`/* Determine the index of the ms bit of the supplied mask. */`
	`//TODO can we use l.fl1 ?`
`cyg_uint32 hal_msbit_index(cyg_uint32 mask)`	`cyg_uint32 hal_msbit_index(cyg_uint32 mask)`
`{`	`{`
`cyg_uint32 x = mask;`	`cyg_uint32 x = mask;`
`cyg_uint32 w;`	`cyg_uint32 w;`