Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / arch / x86 / include / bits / xen.h

diff --git a/qemu/roms/ipxe/src/arch/x86/include/bits/xen.h b/qemu/roms/ipxe/src/arch/x86/include/bits/xen.h
new file mode 100644 (file)
index 0000000..dbccf1b
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86/include/bits/xen.h
@@ -0,0 +1,164 @@
+#ifndef _BITS_XEN_H
+#define _BITS_XEN_H
+
+/** @file
+ *
+ * Xen interface
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/* Hypercall registers */
+#ifdef __x86_64__
+#define XEN_REG1 "rdi"
+#define XEN_REG2 "rsi"
+#define XEN_REG3 "rdx"
+#define XEN_REG4 "r10"
+#define XEN_REG5 "r8"
+#else
+#define XEN_REG1 "ebx"
+#define XEN_REG2 "ecx"
+#define XEN_REG3 "edx"
+#define XEN_REG4 "esi"
+#define XEN_REG5 "edi"
+#endif
+
+/** A hypercall entry point */
+struct xen_hypercall {
+       /** Code generated by hypervisor */
+       uint8_t code[32];
+} __attribute__ (( packed ));
+
+/**
+ * Issue hypercall with one argument
+ *
+ * @v xen              Xen hypervisor
+ * @v hypercall                Hypercall number
+ * @v arg1             First argument
+ * @ret retval         Return value
+ */
+static inline __attribute__ (( always_inline )) unsigned long
+xen_hypercall_1 ( struct xen_hypervisor *xen, unsigned int hypercall,
+                 unsigned long arg1 ) {
+       register unsigned long reg1 asm ( XEN_REG1 ) = arg1;
+       unsigned long retval;
+
+       __asm__ __volatile__ ( "call *%2"
+                              : "=a" ( retval ), "+r" ( reg1 )
+                              : "r" ( &xen->hypercall[hypercall] )
+                              : XEN_REG2, XEN_REG3, XEN_REG4, XEN_REG5,
+                                "memory" );
+       return retval;
+}
+
+/**
+ * Issue hypercall with two arguments
+ *
+ * @v xen              Xen hypervisor
+ * @v hypercall                Hypercall number
+ * @v arg1             First argument
+ * @v arg2             Second argument
+ * @ret retval         Return value
+ */
+static inline __attribute__ (( always_inline )) unsigned long
+xen_hypercall_2 ( struct xen_hypervisor *xen, unsigned int hypercall,
+                 unsigned long arg1, unsigned long arg2 ) {
+       register unsigned long reg1 asm ( XEN_REG1 ) = arg1;
+       register unsigned long reg2 asm ( XEN_REG2 ) = arg2;
+       unsigned long retval;
+
+       __asm__ __volatile__ ( "call *%3"
+                              : "=a" ( retval ), "+r" ( reg1 ), "+r" ( reg2 )
+                              : "r" ( &xen->hypercall[hypercall] )
+                              : XEN_REG3, XEN_REG4, XEN_REG5, "memory" );
+       return retval;
+}
+
+/**
+ * Issue hypercall with three arguments
+ *
+ * @v xen              Xen hypervisor
+ * @v hypercall                Hypercall number
+ * @v arg1             First argument
+ * @v arg2             Second argument
+ * @v arg3             Third argument
+ * @ret retval         Return value
+ */
+static inline __attribute__ (( always_inline )) unsigned long
+xen_hypercall_3 ( struct xen_hypervisor *xen, unsigned int hypercall,
+                 unsigned long arg1, unsigned long arg2, unsigned long arg3 ) {
+       register unsigned long reg1 asm ( XEN_REG1 ) = arg1;
+       register unsigned long reg2 asm ( XEN_REG2 ) = arg2;
+       register unsigned long reg3 asm ( XEN_REG3 ) = arg3;
+       unsigned long retval;
+
+       __asm__ __volatile__ ( "call *%4"
+                              : "=a" ( retval ), "+r" ( reg1 ), "+r" ( reg2 ),
+                                "+r" ( reg3 )
+                              : "r" ( &xen->hypercall[hypercall] )
+                              : XEN_REG4, XEN_REG5, "memory" );
+       return retval;
+}
+
+/**
+ * Issue hypercall with four arguments
+ *
+ * @v xen              Xen hypervisor
+ * @v hypercall                Hypercall number
+ * @v arg1             First argument
+ * @v arg2             Second argument
+ * @v arg3             Third argument
+ * @v arg4             Fourth argument
+ * @ret retval         Return value
+ */
+static inline __attribute__ (( always_inline )) unsigned long
+xen_hypercall_4 ( struct xen_hypervisor *xen, unsigned int hypercall,
+                 unsigned long arg1, unsigned long arg2, unsigned long arg3,
+                 unsigned long arg4 ) {
+       register unsigned long reg1 asm ( XEN_REG1 ) = arg1;
+       register unsigned long reg2 asm ( XEN_REG2 ) = arg2;
+       register unsigned long reg3 asm ( XEN_REG3 ) = arg3;
+       register unsigned long reg4 asm ( XEN_REG4 ) = arg4;
+       unsigned long retval;
+
+       __asm__ __volatile__ ( "call *%5"
+                              : "=a" ( retval ), "+r" ( reg1 ), "+r" ( reg2 ),
+                                "+r" ( reg3 ), "+r" ( reg4 )
+                              : "r" ( &xen->hypercall[hypercall] )
+                              : XEN_REG5, "memory" );
+       return retval;
+}
+
+/**
+ * Issue hypercall with five arguments
+ *
+ * @v xen              Xen hypervisor
+ * @v hypercall                Hypercall number
+ * @v arg1             First argument
+ * @v arg2             Second argument
+ * @v arg3             Third argument
+ * @v arg4             Fourth argument
+ * @v arg5             Fifth argument
+ * @ret retval         Return value
+ */
+static inline __attribute__ (( always_inline )) unsigned long
+xen_hypercall_5 ( struct xen_hypervisor *xen, unsigned int hypercall,
+                 unsigned long arg1, unsigned long arg2, unsigned long arg3,
+                 unsigned long arg4, unsigned long arg5 ) {
+       register unsigned long reg1 asm ( XEN_REG1 ) = arg1;
+       register unsigned long reg2 asm ( XEN_REG2 ) = arg2;
+       register unsigned long reg3 asm ( XEN_REG3 ) = arg3;
+       register unsigned long reg4 asm ( XEN_REG4 ) = arg4;
+       register unsigned long reg5 asm ( XEN_REG5 ) = arg5;
+       unsigned long retval;
+
+       __asm__ __volatile__ ( "call *%6"
+                              : "=a" ( retval ), "+r" ( reg1 ), "+r" ( reg2 ),
+                                "+r" ( reg3 ), "+r" ( reg4 ), "+r" ( reg5 )
+                              : "r" ( &xen->hypercall[hypercall] )
+                              : "memory" );
+       return retval;
+}
+
+#endif /* _BITS_XEN_H */