[reactos] 02/19: [ASM:X64] ASSERT that interrupts are enabled, when returning to user mode

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=8ec888487af60784a3e765...

commit 8ec888487af60784a3e7655c676cdb0479a79498
Author:     Timo Kreuzer [e-mail]
AuthorDate: Mon Feb 12 20:48:11 2018 +0100
Commit:     Timo Kreuzer [e-mail]
CommitDate: Sat Oct 31 14:23:16 2020 +0100

[ASM:X64] ASSERT that interrupts are enabled, when returning to user mode
---
 ntoskrnl/ke/amd64/trap.S      | 5 +++++
 sdk/include/asm/trapamd64.inc | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/ntoskrnl/ke/amd64/trap.S b/ntoskrnl/ke/amd64/trap.S
index 3bcaa1684bf..75707e1d72d 100644
--- a/ntoskrnl/ke/amd64/trap.S
+++ b/ntoskrnl/ke/amd64/trap.S
@@ -786,6 +786,11 @@ PUBLIC KiSystemCallEntry64
 #if DBG
     /* Restore rbp */
     mov rbp, [rsp + SYSCALL_ALLOCATION + KTRAP_FRAME_Rbp]
+
+    test dword ptr [rsp + MAX_SYSCALL_PARAM_SIZE + KTRAP_FRAME_EFlags], HEX(200)
+    jnz IntsEnabled
+    int 3
+IntsEnabled:
 #endif

/* Disable interrupts for return */
diff --git a/sdk/include/asm/trapamd64.inc b/sdk/include/asm/trapamd64.inc
index 88a8d182cc2..74209493d90 100644
--- a/sdk/include/asm/trapamd64.inc
+++ b/sdk/include/asm/trapamd64.inc
@@ -142,6 +142,7 @@ ENDM
  */
 MACRO(ExitTrap, Flags)
     LOCAL kernel_mode_return
+    LOCAL IntsEnabled

#if DBG
         /* Check previous irql */
@@ -177,6 +178,14 @@ MACRO(ExitTrap, Flags)

endif

+#if DBG
+    /*Make sure interrupts are enabled */
+    test dword ptr [rbp + KTRAP_FRAME_EFlags], HEX(200)
+    jnz IntsEnabled
+    int HEX(2c)
+IntsEnabled:
+#endif
+
     /* Swap gs to user mode */
     swapgs