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| author | Ian Moffett <ian@osmora.org> | 2025-06-07 18:00:47 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-06-07 18:00:47 -0400 |
| commit | 3ba69c887bdde4795e52a88ff37964e55766d09c (patch) | |
| tree | aa6253b2f8f8267566aee8970162ef1052b59b9c | |
| parent | f71d200e8857e3a9d44df9d752b8c6e7f281de84 (diff) | |
kernel/amd64: Save %RCX before calling handler
Signed-off-by: Ian Moffett <ian@osmora.org>
| -rw-r--r-- | sys/arch/amd64/amd64/vector.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/arch/amd64/amd64/vector.S b/sys/arch/amd64/amd64/vector.S index d2a3d89..e348ff4 100644 --- a/sys/arch/amd64/amd64/vector.S +++ b/sys/arch/amd64/amd64/vector.S @@ -52,7 +52,9 @@ ioapic_common_func: mov (%rdx), %rbx // intr_hand.func xor %rdi, %rdi // No data + push %rcx // Save our counter call *%rbx // Call the handler + pop %rcx // Restore our counter or %rax, %rax // Was it theirs? (RET >= 1) jnz done // Yes, we are done. 1: inc %rcx // Next |