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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2009-06-12 10:02:03 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-06-12 10:02:03 -0500
commit82681a318f9f028ea64e61f24bbd9ac535531921 (patch)
tree529b6a5b4fd040fb54b7672b1a224ebd47445876 /arch/x86/boot/regs.c
parent3860c97bd60a4525bb62eb90e3e7d2f02662ac59 (diff)
parent8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff)
[SCSI] Merge branch 'linus'
Conflicts: drivers/message/fusion/mptsas.c fixed up conflict between req->data_len accessors and mptsas driver updates. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'arch/x86/boot/regs.c')
-rw-r--r--arch/x86/boot/regs.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/boot/regs.c b/arch/x86/boot/regs.c
new file mode 100644
index 00000000000..958019b1cfa
--- /dev/null
+++ b/arch/x86/boot/regs.c
@@ -0,0 +1,29 @@
+/* -----------------------------------------------------------------------
+ *
+ * Copyright 2009 Intel Corporation; author H. Peter Anvin
+ *
+ * This file is part of the Linux kernel, and is made available under
+ * the terms of the GNU General Public License version 2 or (at your
+ * option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * Simple helper function for initializing a register set.
+ *
+ * Note that this sets EFLAGS_CF in the input register set; this
+ * makes it easier to catch functions which do nothing but don't
+ * explicitly set CF.
+ */
+
+#include "boot.h"
+
+void initregs(struct biosregs *reg)
+{
+ memset(reg, 0, sizeof *reg);
+ reg->eflags |= X86_EFLAGS_CF;
+ reg->ds = ds();
+ reg->es = ds();
+ reg->fs = fs();
+ reg->gs = gs();
+}