vmx(1): add support for (so far) crude 9p debugging fs; add gdb stub; clean up linux gdt code

1 files changed, 29 insertions, 0 deletions

diff --git a/sys/src/cmd/vmx/x86.h b/sys/src/cmd/vmx/x86.h
new file mode 100644
index 000000000..df19a35b4
--- /dev/null
+++ b/sys/src/cmd/vmx/x86.h
@@ -0,0 +1,29 @@
+#define GDTTYPE(x) ((uvlong)(x)<<40)
+enum {
+	GDTR	= GDTTYPE(0x10), /* read-only */
+	GDTRW	= GDTTYPE(0x12), /* read-write *
+	GDTX	= GDTTYPE(0x18), /* execute-only */
+	GDTRX	= GDTTYPE(0x1A), /* read-execute */
+	
+	GDTTSS	= GDTTYPE(0x09),
+	
+	GDTA	= 1ULL<<40,	/* accessed */
+	GDTE	= 1ULL<<42,	/* expand down (data only) */
+	GDTC	= GDTE,		/* conforming (code only) */
+	GDTP	= 1ULL<<47,	/* present */
+	GDT64	= 1ULL<<53,	/* 64-bit code segment */
+	GDT32	= 1ULL<<54,	/* 32-bit segment */
+	GDTG	= 1ULL<<55,	/* granularity */
+};
+#define GDTLIM(l) ((l) & 0xffff | (uvlong)((l) & 0xf0000)<<32)
+#define GDTBASE(l) (((uvlong)(l) & 0xffffff)<<16 | (uvlong)((l) & 0xff000000)<<32)
+#define GDTDPL(l) ((uvlong)(l)<<45)
+
+enum {
+	Cr0Pg	= 1<<31,
+	
+	Cr4Pse	= 1<<4,
+	Cr4Pae	= 1<<5,
+	
+	EferLme	= 1<<8,
+};