summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorSamuel Thibault <samuel.thibault@ens-lyon.org>2025-07-19 10:22:31 +0200
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2025-07-19 10:22:31 +0200
commit288163f2e010709888a9bc358307cf9863973e16 (patch)
treeb8b95ed449f2cf2599be3903c4e0f15610538650
parente7ab1c0d68c695c57388625c1354d3f3955deda7 (diff)
interrupt: simplify offsetting with irq numberHEADmaster
-rw-r--r--i386/i386at/interrupt.S5
-rw-r--r--x86_64/interrupt.S6
2 files changed, 4 insertions, 7 deletions
diff --git a/i386/i386at/interrupt.S b/i386/i386at/interrupt.S
index ac71473b..164b0939 100644
--- a/i386/i386at/interrupt.S
+++ b/i386/i386at/interrupt.S
@@ -124,11 +124,10 @@ _call_handler:
movl S_IRQ,%eax /* copy irq number */
- shll $2,%eax /* irq * 4 */
- movl EXT(iunit)(%eax),%edx /* get device unit number */
+ movl EXT(iunit)(,%eax,4),%edx /* get device unit number */
movl %edx,(%esp) /* unit number as 1st arg */
- call *EXT(ivect)(%eax) /* call interrupt handler */
+ call *EXT(ivect)(,%eax,4) /* call interrupt handler */
movl S_IRQ,%ecx /* restore irq number */
movb EXT(irqinfo)(,%ecx,2),%al /* look up irq_info[irq].trigger */
diff --git a/x86_64/interrupt.S b/x86_64/interrupt.S
index 6c0b4e02..4b2d0482 100644
--- a/x86_64/interrupt.S
+++ b/x86_64/interrupt.S
@@ -123,11 +123,9 @@ _call_handler:
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 */
+ movl EXT(iunit)(,%rax,4),%edi /* get device unit number as 1st arg */
- shll $1,%eax /* irq * 8 */
- call *EXT(ivect)(%rax) /* call interrupt handler */
+ call *EXT(ivect)(,%rax,8) /* call interrupt handler */
movl S_IRQ,%ecx
movb EXT(irqinfo)(,%rcx,2),%al /* look up irq_info[irq].trigger */