RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

2004-02-03 Ralf Corsepius <corsepiu@faw.uni-ulm.de>

Browse Source 
* irq/irq_asm.S: Convert #..-comments to /*..*/ comments.
This commit is contained in:
Ralf Corsepius
2004-02-03 06:29:09 +00:00
parent 0b422e16ce
commit 602448c056
2 changed files with 26 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
c/src/lib/libbsp/i386/shared/ChangeLog
View File

@@ -1,3 +1,7 @@
2004-02-03 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* irq/irq_asm.S: Convert #..-comments to /*..*/ comments.
2004-01-21 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* Makefile.am: Add PREINSTALL_DIRS.

44
c/src/lib/libbsp/i386/shared/irq/irq_asm.S
View File

@@ -49,8 +49,8 @@ SYM (_ISR_Handler):
* Now switch stacks if necessary
*/
movw SYM (i8259s_cache), ax # move current i8259 interrupt mask in ax
pushl eax # push it on the stack
movw SYM (i8259s_cache), ax /* move current i8259 interrupt mask in ax */
pushl eax /* push it on the stack */
/*
* compute the new PIC mask:
*
@@ -80,9 +80,9 @@ SYM (_ISR_Handler):
.check_stack_switch:
pushl ebp
movl esp, ebp # ebp = previous stack pointer
cmpl $0, SYM (_ISR_Nest_level) # is this the outermost interrupt?
jne nested # No, then continue
movl esp, ebp /* ebp = previous stack pointer */
cmpl $0, SYM (_ISR_Nest_level) /* is this the outermost interrupt? */
jne nested /* No, then continue */
movl SYM (_CPU_Interrupt_stack_high), esp
/*
@@ -93,8 +93,8 @@ SYM (_ISR_Handler):
*/
nested:
incl SYM (_ISR_Nest_level) # one nest level deeper
incl SYM (_Thread_Dispatch_disable_level) # disable multitasking
incl SYM (_ISR_Nest_level) /* one nest level deeper */
incl SYM (_Thread_Dispatch_disable_level) /* disable multitasking */
/*
* re-enable interrupts at processor level as the current
* interrupt source is now masked via i8259
@@ -106,15 +106,15 @@ nested:
* so we must save it again.
*/
pushl ecx # push vector number
pushl ecx /* push vector number */
mov SYM (current_irq) (,ecx,4),eax
# eax = Users handler
call *eax # invoke user ISR
/* eax = Users handler */
call *eax /* invoke user ISR */
/*
* disable interrupts_again
*/
cli
popl ecx # ecx = vector number
popl ecx /* ecx = vector number */
/*
* restore stack
*/
@@ -131,23 +131,23 @@ nested:
outb $PIC_SLAVE_IMR_IO_PORT
decl SYM (_ISR_Nest_level) # one less ISR nest level
# If interrupts are nested,
# then dispatching is disabled
decl SYM (_ISR_Nest_level) /* one less ISR nest level */
/* If interrupts are nested, */
/* then dispatching is disabled */
decl SYM (_Thread_Dispatch_disable_level)
# unnest multitasking
# Is dispatch disabled
jne .exit # Yes, then exit
/* unnest multitasking */
/* Is dispatch disabled */
jne .exit /* Yes, then exit */
cmpl $0, SYM (_Context_Switch_necessary)
# Is task switch necessary?
jne .schedule # Yes, then call the scheduler
/* Is task switch necessary? */
jne .schedule /* Yes, then call the scheduler */
cmpl $0, SYM (_ISR_Signals_to_thread_executing)
# signals sent to Run_thread
# while in interrupt handler?
je .exit # No, exit
/* signals sent to Run_thread */
/* while in interrupt handler? */
je .exit /* No, exit */
.bframe: