diff options
Diffstat (limited to 'x86_64/interrupt.S')
| -rw-r--r-- | x86_64/interrupt.S | 47 |
1 files changed, 24 insertions, 23 deletions
diff --git a/x86_64/interrupt.S b/x86_64/interrupt.S index 845e0d1a..c73b31e8 100644 --- a/x86_64/interrupt.S +++ b/x86_64/interrupt.S @@ -41,7 +41,9 @@ ENTRY(interrupt) #ifdef APIC cmpl $255,%eax /* was this a spurious intr? */ - je _no_eoi /* if so, just return */ + jne 1f + ret /* if so, just return */ +1: #endif cmpl $CALL_SINGLE_FUNCTION_BASE,%eax /* was this a SMP call single function request? */ je _call_single @@ -52,26 +54,6 @@ ENTRY(interrupt) call spl7 /* set ipl */ movl %eax,S_IPL /* save previous ipl */ - ; - movq S_IPL,S_ARG1 /* previous ipl as 2nd arg */ - - ; - movq S_RET,S_ARG2 /* return address as 3th arg */ - - ; - movq S_REGS,S_ARG3 /* address of interrupted registers as 4th arg */ - - movl S_IRQ,%eax /* copy irq number */ - shll $2,%eax /* irq * 4 */ - movl EXT(iunit)(%rax),%edi /* get device unit number as 1st arg */ - - shll $1,%eax /* irq * 8 */ - call *EXT(ivect)(%rax) /* call interrupt handler */ - - movl S_IPL,%edi /* restore previous ipl */ - call splx_cli /* restore previous ipl */ - cli /* XXX no more nested interrupts */ - movl S_IRQ,%ecx /* restore irq number */ #ifndef APIC @@ -113,12 +95,31 @@ ENTRY(interrupt) #else cmpl $16,%ecx /* was this a low ISA intr? */ jge _no_eoi /* no, must be PCI (let irq_ack handle EOI) */ -_isa_eoi: movl %ecx,%edi /* load irq number as 1st arg */ call EXT(ioapic_irq_eoi) /* ioapic irq specific EOI */ +_no_eoi: #endif + + ; + movq S_IPL,S_ARG1 /* previous ipl as 2nd arg */ + + ; + movq S_RET,S_ARG2 /* return address as 3th arg */ + + ; + movq S_REGS,S_ARG3 /* address of interrupted registers as 4th arg */ + + movl S_IRQ,%eax /* copy irq number */ + shll $2,%eax /* irq * 4 */ + movl EXT(iunit)(%rax),%edi /* get device unit number as 1st arg */ + + shll $1,%eax /* irq * 8 */ + call *EXT(ivect)(%rax) /* call interrupt handler */ + + movl S_IPL,%edi /* restore previous ipl */ + call splx_cli /* restore previous ipl */ + addq $16,%rsp /* pop local variables */ -_no_eoi: ret _call_single: |