Architectural Support: x86_64 (#37)

[lunaix-os.git] / lunaix-os / arch / x86 / includes / sys / x86_isa.h

diff --git a/lunaix-os/arch/x86/includes/sys/x86_isa.h b/lunaix-os/arch/x86/includes/sys/x86_isa.h
new file mode 100644 (file)
index 0000000..34510c8
--- /dev/null
+++ b/lunaix-os/arch/x86/includes/sys/x86_isa.h
@@ -0,0 +1,96 @@
+#ifndef __LUNAIX_I386_ASM_H
+#define __LUNAIX_I386_ASM_H
+
+#define SEL_INDEX(i)    ((i) << 3)
+#define SEL_RPL(rpl)    ((rpl) & 0b11)
+
+#define KCODE_SEG (SEL_INDEX(1) | SEL_RPL(0))
+#define UCODE_SEG (SEL_INDEX(2) | SEL_RPL(3))
+
+#ifdef CONFIG_ARCH_I386
+    #define KDATA_SEG (SEL_INDEX(3) | SEL_RPL(0))
+    #define UDATA_SEG (SEL_INDEX(4) | SEL_RPL(3))
+    #define TSS_SEG   (SEL_INDEX(5) | SEL_RPL(0))
+
+#else
+    #define KDATA_SEG (SEL_INDEX(3) | SEL_RPL(0))
+    #define UDATA_SEG (SEL_INDEX(4) | SEL_RPL(3))
+    #define TSS_SEG   (SEL_INDEX(5) | SEL_RPL(0))
+
+#endif
+
+
+#ifndef __ASM__
+#include <lunaix/types.h>
+
+#define IRQ_TRIG_EDGE 0b0
+#define IRQ_TRIG_LEVEL 0b1
+
+#define IRQ_TYPE_FIXED (0b01 << 1)
+#define IRQ_TYPE_NMI (0b11 << 1)
+#define IRQ_TYPE (0b11 << 1)
+
+#define IRQ_VE_HI (0b1 << 3)
+#define IRQ_VE_LO (0b0 << 3)
+
+#define IRQ_DEFAULT (IRQ_TRIG_EDGE | IRQ_TYPE_FIXED | IRQ_VE_HI)
+
+
+struct x86_intc
+{
+    char* name;
+    void* data;
+
+    void (*irq_attach)(struct x86_intc*,
+                       int irq,
+                       int iv,
+                       cpu_t dest,
+                       u32_t flags);
+    void (*notify_eoi)(struct x86_intc*, cpu_t id, int iv);
+};
+
+#ifdef CONFIG_ARCH_X86_64
+
+struct x86_tss
+{
+    u32_t rsvd_1;
+    ptr_t rsps[3];
+    union {
+        struct {
+            ptr_t ist_null;
+            ptr_t valid_ists[7];
+        };
+        ptr_t ists[8];
+    };
+    
+    u8_t rsvd_3[12];
+} compact;
+
+struct x86_sysdesc {
+    u64_t lo;
+    u64_t hi;
+} compact;
+
+typedef u64_t x86_segdesc_t;
+
+#else
+
+struct x86_tss
+{
+    u32_t link;
+    u32_t esp0;
+    u16_t ss0;
+    u8_t __padding[94];
+} compact;
+
+struct x86_sysdesc {
+    u32_t lo;
+    u32_t hi;
+} compact;
+
+typedef struct x86_sysdesc x86_segdesc_t;
+
+#endif
+
+#endif
+#endif /* __LUNAIX_I386_ASM_H */