From 637df35f96d8023056369fcf2c9943419f1a1b74 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Wed, 12 Jul 1995 19:47:25 +0000
Subject: Ada95, gnat, go32

---
 cpukit/score/cpu/i386/asm.h       |  9 +++++
 cpukit/score/cpu/i386/cpu.c       | 75 ++++++++++++++++++++++++++++++---------
 cpukit/score/cpu/i386/rtems/asm.h |  9 +++++
 3 files changed, 76 insertions(+), 17 deletions(-)

(limited to 'cpukit/score/cpu/i386')

diff --git a/cpukit/score/cpu/i386/asm.h b/cpukit/score/cpu/i386/asm.h
index 16cf6c3235..adf92f935a 100644
--- a/cpukit/score/cpu/i386/asm.h
+++ b/cpukit/score/cpu/i386/asm.h
@@ -40,6 +40,15 @@
  *  have to define these as appropriate.
  */
 
+/*
+ *  Go32 suffers the same bug as __REGISTER_PREFIX__ 
+ */
+ 
+#if __GO32__
+#undef  __USER_LABEL_PREFIX__
+#define __USER_LABEL_PREFIX__ _
+#endif
+
 #ifndef __USER_LABEL_PREFIX__
 #define __USER_LABEL_PREFIX__ _
 #endif
diff --git a/cpukit/score/cpu/i386/cpu.c b/cpukit/score/cpu/i386/cpu.c
index 05a836f7e3..f2859230e2 100644
--- a/cpukit/score/cpu/i386/cpu.c
+++ b/cpukit/score/cpu/i386/cpu.c
@@ -67,7 +67,60 @@ void _CPU_Initialize(
   }
 }
 
-/*  _CPU_ISR_install_vector
+/*PAGE
+ *
+ *  _CPU_ISR_install_raw_handler
+ */
+ 
+#if __GO32__
+#include <cpu.h>
+#include <go32.h>
+#include <dpmi.h>
+#endif /* __GO32__ */
+
+void _CPU_ISR_install_raw_handler(
+  unsigned32  vector,
+  proc_ptr    new_handler,
+  proc_ptr   *old_handler
+)
+{
+#if __GO32__
+    _go32_dpmi_seginfo handler_info;
+ 
+    *old_handler =  0;    /* XXX not supported */
+
+    handler_info.pm_offset = new_handler;
+    handler_info.pm_selector = _go32_my_cs();
+
+    /* install the IDT entry */
+    _go32_dpmi_set_protected_mode_interrupt_vector( vector, &handler_info );
+#else
+  i386_IDT_slot idt;
+  unsigned32    handler;
+
+  *old_handler =  0;    /* XXX not supported */
+
+  handler = (unsigned32) new_handler;
+
+  /* build the IDT entry */
+  idt.offset_0_15      = handler & 0xffff;
+  idt.segment_selector = i386_get_cs();
+  idt.reserved         = 0x00;
+  idt.p_dpl            = 0x8e;         /* present, ISR */
+  idt.offset_16_31     = handler >> 16;
+
+  /* install the IDT entry */
+  i386_Install_idt(
+    (unsigned32) &idt,
+    _CPU_Table.interrupt_table_segment,
+    (unsigned32) _CPU_Table.interrupt_table_offset + (8 * vector)
+  );
+#endif
+}
+
+/*PAGE
+ *
+ *  _CPU_ISR_install_vector
  *
  *  This kernel routine installs the RTEMS handler for the
  *  specified vector.
@@ -95,27 +148,15 @@ void _CPU_ISR_install_vector(
   proc_ptr   *old_handler
 )
 {
-  i386_IDT_slot idt;
+  proc_ptr      ignored;
   unsigned32    unique_handler;
 
+  *old_handler = _ISR_Vector_table[ vector ];
+
   /* calculate the unique entry point for this vector */
   unique_handler = _Interrupt_Handler_entry( vector );
 
-  /* build the IDT entry */
-  idt.offset_0_15      = ((unsigned32) unique_handler) & 0xffff;
-  idt.segment_selector = i386_get_cs();
-  idt.reserved         = 0x00;
-  idt.p_dpl            = 0x8e;         /* present, ISR */
-  idt.offset_16_31     = ((unsigned32) unique_handler) >> 16;
-
-  /* install the IDT entry */
-  i386_Install_idt(
-    (unsigned32) &idt,
-    _CPU_Table.interrupt_table_segment,
-    (unsigned32) _CPU_Table.interrupt_table_offset + (8 * vector)
-  );
+  _CPU_ISR_install_raw_handler( vector, (void *)unique_handler, &ignored );
 
-  /* "portable" part */
-  *old_handler = _ISR_Vector_table[ vector ];
   _ISR_Vector_table[ vector ] = new_handler;
 }
diff --git a/cpukit/score/cpu/i386/rtems/asm.h b/cpukit/score/cpu/i386/rtems/asm.h
index 16cf6c3235..adf92f935a 100644
--- a/cpukit/score/cpu/i386/rtems/asm.h
+++ b/cpukit/score/cpu/i386/rtems/asm.h
@@ -40,6 +40,15 @@
  *  have to define these as appropriate.
  */
 
+/*
+ *  Go32 suffers the same bug as __REGISTER_PREFIX__ 
+ */
+ 
+#if __GO32__
+#undef  __USER_LABEL_PREFIX__
+#define __USER_LABEL_PREFIX__ _
+#endif
+
 #ifndef __USER_LABEL_PREFIX__
 #define __USER_LABEL_PREFIX__ _
 #endif
-- 
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