[PATCH 0/1] MR7904: krnl386: Fix return value for DPMI 0900h-0902h calls (Virtual Interrupt State)

[Pali Rohár (＠pali)]

According to the DPMI specification, DPMI functions 0900h-0902h related to
Virtual Interrupt State has to always return state in AL register.

As wine does not support disabling virtual interrupt flag, report that
interrupts are always enabled (AL=1).

[PATCH 1/1] krnl386: Fix return value for DPMI 0900h-0902h calls (Virtual Interrupt State)

[Pali Rohár]

From: Pali Rohár

According to the DPMI specification, DPMI functions 0900h-0902h related to
Virtual Interrupt State has to always return state in AL register.

As wine does not support disabling virtual interrupt flag, report that
interrupts are always enabled (AL=1).

Signed-off-by: Pali Rohár 
---
 dlls/krnl386.exe16/int31.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/dlls/krnl386.exe16/int31.c b/dlls/krnl386.exe16/int31.c
index 0d13763451c..2414fb7e55e 100644
--- a/dlls/krnl386.exe16/int31.c
+++ b/dlls/krnl386.exe16/int31.c
@@ -628,15 +628,18 @@ void WINAPI DOSVM_Int31Handler( CONTEXT *context )
         break;

case 0x0900:  /* Get and Disable Virtual Interrupt State */
-        TRACE( "Get and Disable Virtual Interrupt State - not supported\n" );
+        FIXME( "Get and Disable Virtual Interrupt State - unimplemented\n" );
+        SET_AL( context, 1 );  /* report that interrupts are always enabled */
         break;

case 0x0901:  /* Get and Enable Virtual Interrupt State */
-        TRACE( "Get and Enable Virtual Interrupt State - not supported\n" );
+        FIXME( "Get and Enable Virtual Interrupt State - unimplemented\n" );
+        SET_AL( context, 1 );  /* report that interrupts are always enabled */
         break;

case 0x0902:  /* Get Virtual Interrupt State */
-        TRACE( "Get Virtual Interrupt State - not supported\n" );
+        FIXME( "Get Virtual Interrupt State - unimplemented\n" );
+        SET_AL( context, 1 );  /* report that interrupts are always enabled */
         break;

case 0x0e00:  /* Get Coprocessor Status (1.0) */