Dump APIC registers

I have developed a patch that dumps the APIC registers.

This patch was developed based on information available in "Intel 64
and IA-32 Architectures Software Developer's Manual Volume 3A: System
Programming Guide", chapter 10 - ADVANCED PROGRAMMABLE INTERRUPT
CONTROLLER (APIC).

1 files changed, 44 insertions, 0 deletions

diff --git a/apic.h b/apic.h
new file mode 100644
index 0000000..e412715
--- /dev/null
+++ b/apic.h
@@ -0,0 +1,44 @@
+#ifndef _APIC_H
+#define _APIC_H
+
+#define IA32_APIC_BASE_MSR 		0x1B
+
+#define APIC_REGISTER_SPACE 		4096
+#define APIC_REGISTER_ALIGNED_SIZE 	4
+
+#define PAGE_OFFSET(addr) 		((unsigned long)(addr) & (getpagesize() - 1))
+
+enum apic_register_offset
+{
+	APIC_ID		= 0x2,
+	APIC_VER 	= 0x3,
+	APIC_TPR 	= 0x8,
+	APIC_APR 	= 0x9,
+	APIC_PPR 	= 0xA,
+	APIC_EOI 	= 0xB,
+	APIC_RRD 	= 0xC,
+	APIC_LDR 	= 0xD,
+	APIC_DFR 	= 0xE,
+	APIC_SIVR 	= 0xF,
+	APIC_ISR	= 0x10,
+	APIC_TMR	= 0x18,
+	APIC_IRR 	= 0x20,
+	APIC_ESR	= 0x28,
+	APIC_LVT 	= 0x2F,
+	APIC_ICR0 	= 0x30,
+	APIC_ICR1 	= 0x31,
+	APIC_LVTT 	= 0x32,
+	APIC_LVTTS 	= 0x33,
+	APIC_LVTPC 	= 0x34,
+	APIC_LVT0 	= 0x35,
+	APIC_LVT1 	= 0x36,
+	APIC_LVTER 	= 0x37,
+	APIC_TICR 	= 0x38,
+	APIC_TCCR 	= 0x39,
+	APIC_TDCR 	= 0x3E,
+};
+
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#endif /* _APIC_H */