Use __attribute__((no_reorder)) for IRQ interrupts

src/dos/dosirq.c

@@ -282,7 +282,7 @@ static volatile unsigned int __irq_mask;
 static volatile unsigned int __irq_count[16];
 
 #define DECLARE_IRQ_HANDLER(irqno)							\
-static void INTERRUPT_ATTRIBUTES __irq##irqno##_handler ()						\
+static void INTERRUPT_ATTRIBUTES NO_REORDER __irq##irqno##_handler ()						\
 {															\
   if (irq_check (__irqs [irqno]) && __irq_confirm (irqno))	\
   {															\
@@ -291,7 +291,7 @@ static void INTERRUPT_ATTRIBUTES __irq##irqno##_handler ()						\
   }															\
   irq_ack (__irqs [irqno]);									\
 }															\
-static void __irq##irqno##_end(void)								\
+static void NO_REORDER __irq##irqno##_end(void)								\
 {															\
 }
 

src/dos/dosirq.h

@@ -17,6 +17,12 @@
 #define PIC1_BASE	0x20		/* PIC1 base */
 #define PIC2_BASE	0xA0		/* PIC2 base */
 
+#ifdef __GNUC__
+#define NO_REORDER __attribute__((no_reorder))
+#else
+#define NO_REORDER
+#endif
+
 #ifdef __WATCOMC__
 #define INTERRUPT_ATTRIBUTES __interrupt __far
 #else

src/dos/dossb.c

@@ -42,7 +42,7 @@ _func_noclone
 	inportb(SB_DSP_RESET);
 }
 
-static void INTERRUPT_ATTRIBUTES sb_irq()
+static void INTERRUPT_ATTRIBUTES NO_REORDER sb_irq()
 {
 	/* Make sure its not a spurious IRQ */
 	if (!irq_check(sb.irq_handle))
@@ -68,7 +68,7 @@ static void INTERRUPT_ATTRIBUTES sb_irq()
 		sb.timer_callback();
 }
 
-static void sb_irq_end()
+static void NO_REORDER sb_irq_end()
 {
 }
 
@@ -109,7 +109,7 @@ static int __sb_irq_irqdetect(int irqno)
 	return 1;
 }
 
-static void INTERRUPT_ATTRIBUTES __sb_irq_dmadetect()
+static void INTERRUPT_ATTRIBUTES NO_REORDER __sb_irq_dmadetect()
 {
 	/* Make sure its not a spurious IRQ */
 	if (!irq_check(sb.irq_handle))
@@ -127,7 +127,7 @@ static void INTERRUPT_ATTRIBUTES __sb_irq_dmadetect()
 	irq_ack(sb.irq_handle);
 }
 
-static void __sb_irq_dmadetect_end()
+static void NO_REORDER __sb_irq_dmadetect_end()
 {
 }