fix: previous interrupt context lost after a nested interrupt

[lunaix-os.git] / lunaix-os / includes / arch / x86 / interrupts.h

diff --git a/lunaix-os/includes/arch/x86/interrupts.h b/lunaix-os/includes/arch/x86/interrupts.h
index d25fbe3b68d9e931b7062d559b7f9cbf6ad411ed..f1684a8ad1398d52919a4a28d41c01457ecfb886 100644 (file)
--- a/lunaix-os/includes/arch/x86/interrupts.h
+++ b/lunaix-os/includes/arch/x86/interrupts.h
@@ -5,8 +5,12 @@
 
 #ifndef __ASM__
 #include <hal/cpu.h>
+
+struct exec_param;
+
 typedef struct
 {
+    unsigned int depth;
     struct
     {
         reg32 eax;
@@ -20,9 +24,18 @@ typedef struct
         reg32 es;
         reg32 fs;
         reg32 gs;
-        reg32 esp;
     } __attribute__((packed)) registers;
 
+    union
+    {
+        reg32 esp;
+        volatile struct exec_param* execp;
+    };
+} __attribute__((packed)) isr_param;
+
+struct exec_param
+{
+    isr_param saved_prev_ctx;
     unsigned int vector;
     unsigned int err_code;
     unsigned int eip;
@@ -30,7 +43,9 @@ typedef struct
     unsigned int eflags;
     unsigned int esp;
     unsigned int ss;
-} __attribute__((packed)) isr_param;
+} __attribute__((packed));
+
+#define ISR_PARAM_SIZE sizeof(isr_param)
 
 void
 intr_handler(isr_param* param);