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Cosmetics, coding style fixes (trivial).

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Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3180 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Uwe Hermann
2008-03-20 19:54:59 +00:00
parent 5f4c8abb65
commit 6a441bfb46
22 changed files with 348 additions and 401 deletions
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47
payloads/libpayload/i386/head.S
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@ -26,60 +26,55 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
.global _entry, _leave
.text
.align 4
/* Our entry point - assume that the CPU is in
* 32 bit protected mode and all segments are in a
* flat model. Thats our operating mode, so we won't
* change anything
/*
* Our entry point - assume that the CPU is in 32 bit protected mode and
* all segments are in a flat model. That's our operating mode, so we won't
* change anything.
*/
_entry:
call _init
/* We're back - go back to the bootloader */
/* We're back - go back to the bootloader. */
ret
/* This function saves off the previous stack and
switches us to our own execution enviornment
*/
/*
* This function saves off the previous stack and switches us to our
* own execution environment.
*/
_init:
/* No interrupts, please */
/* No interrupts, please. */
cli
/* Get the current stack pointer */
/* Get the current stack pointer. */
movl %esp, %esi
movl _istack, %ebx
/* lret needs %cs in the stack, so copy it over */
/* lret needs %cs in the stack, so copy it over. */
movw %cs, 4(%ebx)
/* Exchange the current stack pointer for the one in
the initial stack (which happens to be the new
stack pointer) */
/*
* Exchange the current stack pointer for the one in the initial
* stack (which happens to be the new stack pointer).
*/
xchgl %esi, 16(%ebx)
/* Set the new stack pointer */
/* Set the new stack pointer. */
movl %esi, %esp
/* Return into the main entry function
and go
*/
/* Return into the main entry function and go. */
lret
_leave:
movl _istack, %ebx
/* Restore the stack pointer from the storage area */
/* Restore the stack pointer from the storage area. */
movl 16(%ebx), %esp
/* Return to the original context */
/* Return to the original context. */
lret