summaryrefslogtreecommitdiffstats
path: root/arch/ia64/include/asm/patch.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--arch/ia64/include/asm/patch.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/patch.h b/arch/ia64/include/asm/patch.h
new file mode 100644
index 000000000..bd487ed22
--- /dev/null
+++ b/arch/ia64/include/asm/patch.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_PATCH_H
+#define _ASM_IA64_PATCH_H
+
+/*
+ * Copyright (C) 2003 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * There are a number of reasons for patching instructions. Rather than duplicating code
+ * all over the place, we put the common stuff here. Reasons for patching: in-kernel
+ * module-loader, virtual-to-physical patch-list, McKinley Errata 9 workaround, and gate
+ * shared library. Undoubtedly, some of these reasons will disappear and others will
+ * be added over time.
+ */
+#include <linux/elf.h>
+#include <linux/types.h>
+
+extern void ia64_patch (u64 insn_addr, u64 mask, u64 val); /* patch any insn slot */
+extern void ia64_patch_imm64 (u64 insn_addr, u64 val); /* patch "movl" w/abs. value*/
+extern void ia64_patch_imm60 (u64 insn_addr, u64 val); /* patch "brl" w/ip-rel value */
+
+extern void ia64_patch_mckinley_e9 (unsigned long start, unsigned long end);
+extern void ia64_patch_vtop (unsigned long start, unsigned long end);
+extern void ia64_patch_phys_stack_reg(unsigned long val);
+extern void ia64_patch_rse (unsigned long start, unsigned long end);
+extern void ia64_patch_gate (void);
+
+#endif /* _ASM_IA64_PATCH_H */