diff options
| author | neal <neal> | 2008-02-13 10:44:37 +0000 |
|---|---|---|
| committer | neal <neal> | 2008-02-13 10:44:37 +0000 |
| commit | 1d8af503782ea5e90c27354392dc6820b8068e7f (patch) | |
| tree | 12a6c215efcd16a92a0c4cf6e4b7b105e2f911fe /libhurd-mm | |
| parent | d0aeec3d78a04a0eecd0a5fb324c8521322124c7 (diff) | |
2008-02-13 Neal H. Walfield <neal@gnu.org>
* ia32-exception-entry.S (ACTIVATED_MODE_BIT): New define.
(PENDING_MESSAGE_BIT): Likewise.
(INTERRUPT_IN_TRANSITION_BIT): Likewise.
(_exception_handler_entry): When testing bits, use the above
defines instead of embedded constants.
Diffstat (limited to 'libhurd-mm')
| -rw-r--r-- | libhurd-mm/ChangeLog | 8 | ||||
| -rw-r--r-- | libhurd-mm/ia32-exception-entry.S | 8 |
2 files changed, 14 insertions, 2 deletions
diff --git a/libhurd-mm/ChangeLog b/libhurd-mm/ChangeLog index f08b191..a73ae6e 100644 --- a/libhurd-mm/ChangeLog +++ b/libhurd-mm/ChangeLog @@ -1,3 +1,11 @@ +2008-02-13 Neal H. Walfield <neal@gnu.org> + + * ia32-exception-entry.S (ACTIVATED_MODE_BIT): New define. + (PENDING_MESSAGE_BIT): Likewise. + (INTERRUPT_IN_TRANSITION_BIT): Likewise. + (_exception_handler_entry): When testing bits, use the above + defines instead of embedded constants. + 2008-02-11 Neal H. Walfield <neal@gnu.org> * as.h (as_insert): Change return type to struct cap *. diff --git a/libhurd-mm/ia32-exception-entry.S b/libhurd-mm/ia32-exception-entry.S index 0569098..ba92354 100644 --- a/libhurd-mm/ia32-exception-entry.S +++ b/libhurd-mm/ia32-exception-entry.S @@ -45,6 +45,10 @@ #define EF_STACK_START (5*4) #define EF_NEXT (5*4) +#define ACTIVATED_MODE_BIT 0 +#define PENDING_MESSAGE_BIT 1 +#define INTERRUPT_IN_TRANSITION_BIT 2 + /* Handle an exception. */ .globl exception_handler_entry, _exception_handler_entry exception_handler_entry: @@ -70,7 +74,7 @@ _exception_handler_entry: and $0xfffff000, %edx /* Now check if the interrupt in transition flag is set. */ - bt $0x4, MODE(%edx) + bt $INTERRUPT_IN_TRANSITION_BIT, MODE(%edx) jc after_save /* Nope; we need to save the current EAX, ECX and eflags. */ @@ -148,7 +152,7 @@ after_adjust: /* Check for pending messages. This does not need to be atomic as if we get interrupted here, we automatically transition back to activated mode. */ - bt $0x2, MODE(%edx) + bt $PENDING_MESSAGE_BIT, MODE(%edx) jc process_pending /* Restore the user stack. */ |