Changeset c7c0b89b in mainline for arch/ia32

Timestamp:

2006-04-22T18:05:16Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

613bc54

Parents:

68091bd

Message:

Added uspace call to enable/disable interrupts.

Location:

arch/ia32

Files:

• include/cpu.h (modified) (1 diff)
• src/asm.S (modified) (3 diffs)
• src/ddi/ddi.c (modified) (2 diffs)

arch/ia32/include/cpu.h

@@ -34 +34 @@
 #include <arch/asm.h>
 
+#define EFLAGS_IF       (1 << 9)
 #define EFLAGS_RF       (1 << 16)
 

arch/ia32/src/asm.S

@@ -87 +87 @@
 # and call exc_dispatch().
 #
-#define INTERRUPT_ALIGN 64
+#define INTERRUPT_ALIGN 128
 .macro handler i n
 
@@ -109 +109 @@
         
         sti
+        cmp $2, %edi           # Is this SYS_INT_CONTROL?
+        je sys_int_ctrl
+        
         call syscall_handler   # syscall_handler(ax,cx,dx,si,di)
+sysc_end:               
         cli
         addl $20, %esp         # clean-up of parameters
@@ -120 +124 @@
         CLEAR_NT_FLAG
         iret
+sys_int_ctrl:               # Interrupt control
+        mov %esp, %eax
+        add $44, %eax
+        mov %eax, 4(%esp)   # Pointer to flags - 2nd argument
+        call ddi_int_control
+        jmp sysc_end
 .else   
         /*

arch/ia32/src/ddi/ddi.c

@@ -35 +35 @@
 #include <arch/pm.h>
 #include <errno.h>
+#include <arch/cpu.h>
 
 /** Enable I/O space range for task.
@@ -91 +92 @@
         return 0;
 }
+
+/** Enable/disable interrupts form syscall
+ *
+ * @param enable If non-zero, interrupts are enabled, otherwise disabled
+ * @param flags CP0 flags register
+ */
+__native ddi_int_control_arch(__native enable, __native *flags)
+{
+        if (enable)
+                *flags |= EFLAGS_IF;
+        else
+                *flags &= ~EFLAGS_IF;
+        return 0;
+}