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

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* 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
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4
c/src/lib/libbsp/i386/shared/ChangeLog
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@@ -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> 2004-01-21 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* Makefile.am: Add PREINSTALL_DIRS. * 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 * Now switch stacks if necessary
*/ */
movw SYM (i8259s_cache), ax # move current i8259 interrupt mask in ax movw SYM (i8259s_cache), ax /* move current i8259 interrupt mask in ax */
pushl eax # push it on the stack pushl eax /* push it on the stack */
/* /*
* compute the new PIC mask: * compute the new PIC mask:
* *
@@ -80,9 +80,9 @@ SYM (_ISR_Handler):
.check_stack_switch: .check_stack_switch:
pushl ebp pushl ebp
movl esp, ebp # ebp = previous stack pointer movl esp, ebp /* ebp = previous stack pointer */
cmpl $0, SYM (_ISR_Nest_level) # is this the outermost interrupt? cmpl $0, SYM (_ISR_Nest_level) /* is this the outermost interrupt? */
jne nested # No, then continue jne nested /* No, then continue */
movl SYM (_CPU_Interrupt_stack_high), esp movl SYM (_CPU_Interrupt_stack_high), esp
/* /*
@@ -93,8 +93,8 @@ SYM (_ISR_Handler):
*/ */
nested: nested:
incl SYM (_ISR_Nest_level) # one nest level deeper incl SYM (_ISR_Nest_level) /* one nest level deeper */
incl SYM (_Thread_Dispatch_disable_level) # disable multitasking incl SYM (_Thread_Dispatch_disable_level) /* disable multitasking */
/* /*
* re-enable interrupts at processor level as the current * re-enable interrupts at processor level as the current
* interrupt source is now masked via i8259 * interrupt source is now masked via i8259
@@ -106,15 +106,15 @@ nested:
* so we must save it again. * so we must save it again.
*/ */
pushl ecx # push vector number pushl ecx /* push vector number */
mov SYM (current_irq) (,ecx,4),eax mov SYM (current_irq) (,ecx,4),eax
# eax = Users handler /* eax = Users handler */
call *eax # invoke user ISR call *eax /* invoke user ISR */
/* /*
* disable interrupts_again * disable interrupts_again
*/ */
cli cli
popl ecx # ecx = vector number popl ecx /* ecx = vector number */
/* /*
* restore stack * restore stack
*/ */
@@ -131,23 +131,23 @@ nested:
outb $PIC_SLAVE_IMR_IO_PORT outb $PIC_SLAVE_IMR_IO_PORT
decl SYM (_ISR_Nest_level) # one less ISR nest level decl SYM (_ISR_Nest_level) /* one less ISR nest level */
# If interrupts are nested, /* If interrupts are nested, */
# then dispatching is disabled /* then dispatching is disabled */
decl SYM (_Thread_Dispatch_disable_level) decl SYM (_Thread_Dispatch_disable_level)
# unnest multitasking /* unnest multitasking */
# Is dispatch disabled /* Is dispatch disabled */
jne .exit # Yes, then exit jne .exit /* Yes, then exit */
cmpl $0, SYM (_Context_Switch_necessary) cmpl $0, SYM (_Context_Switch_necessary)
# Is task switch necessary? /* Is task switch necessary? */
jne .schedule # Yes, then call the scheduler jne .schedule /* Yes, then call the scheduler */
cmpl $0, SYM (_ISR_Signals_to_thread_executing) cmpl $0, SYM (_ISR_Signals_to_thread_executing)
# signals sent to Run_thread /* signals sent to Run_thread */
# while in interrupt handler? /* while in interrupt handler? */
je .exit # No, exit je .exit /* No, exit */
.bframe: .bframe: