Fix stack alignment and shadow space for EntryPoint call

2026-06-16 11:39:31 +02:00
parent d1aa3cf481
commit f6f37494cd
1 changed files with 4 additions and 2 deletions
--- a/xtoskrnl/ar/amd64/archsup.S
+++ b/xtoskrnl/ar/amd64/archsup.S
@@ -467,9 +467,11 @@ ApEnterLongMode:

    /* Save the pointer to PROCESSOR_START_BLOCK */
    movq %rdi, %rcx
-    pushq %rdi

-    /* Call the EntryPoint routine */
+    /* Allocate 32 bytes of shadow space */
+    subq $32, %rsp
+
+    /* Fetch the EntryPoint address and call the routine */
    movq PROCESSOR_START_BLOCK_EntryPoint(%rdi), %rax
    call *%rax