From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/powerpc/include/asm/module.h | 94 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 arch/powerpc/include/asm/module.h

(limited to 'arch/powerpc/include/asm/module.h')

diff --git a/arch/powerpc/include/asm/module.h b/arch/powerpc/include/asm/module.h
new file mode 100644
index 000000000..dcfcad139
--- /dev/null
+++ b/arch/powerpc/include/asm/module.h
@@ -0,0 +1,94 @@
+#ifndef _ASM_POWERPC_MODULE_H
+#define _ASM_POWERPC_MODULE_H
+#ifdef __KERNEL__
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/list.h>
+#include <asm/bug.h>
+#include <asm-generic/module.h>
+
+
+#ifndef __powerpc64__
+/*
+ * Thanks to Paul M for explaining this.
+ *
+ * PPC can only do rel jumps += 32MB, and often the kernel and other
+ * modules are furthur away than this.  So, we jump to a table of
+ * trampolines attached to the module (the Procedure Linkage Table)
+ * whenever that happens.
+ */
+
+struct ppc_plt_entry {
+	/* 16 byte jump instruction sequence (4 instructions) */
+	unsigned int jump[4];
+};
+#endif	/* __powerpc64__ */
+
+
+struct mod_arch_specific {
+#ifdef __powerpc64__
+	unsigned int stubs_section;	/* Index of stubs section in module */
+	unsigned int toc_section;	/* What section is the TOC? */
+	bool toc_fixed;			/* Have we fixed up .TOC.? */
+#ifdef CONFIG_DYNAMIC_FTRACE
+	unsigned long toc;
+	unsigned long tramp;
+#endif
+
+#else /* powerpc64 */
+	/* Indices of PLT sections within module. */
+	unsigned int core_plt_section;
+	unsigned int init_plt_section;
+#ifdef CONFIG_DYNAMIC_FTRACE
+	unsigned long tramp;
+#endif
+#endif /* powerpc64 */
+
+	/* List of BUG addresses, source line numbers and filenames */
+	struct list_head bug_list;
+	struct bug_entry *bug_table;
+	unsigned int num_bugs;
+};
+
+/*
+ * Select ELF headers.
+ * Make empty section for module_frob_arch_sections to expand.
+ */
+
+#ifdef __powerpc64__
+#    ifdef MODULE
+	asm(".section .stubs,\"ax\",@nobits; .align 3; .previous");
+#    endif
+#else
+#    ifdef MODULE
+	asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
+	asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
+#    endif	/* MODULE */
+#endif
+
+#ifdef CONFIG_DYNAMIC_FTRACE
+#    ifdef MODULE
+	asm(".section .ftrace.tramp,\"ax\",@nobits; .align 3; .previous");
+#    endif	/* MODULE */
+#endif
+
+bool is_module_trampoline(u32 *insns);
+int module_trampoline_target(struct module *mod, u32 *trampoline,
+			     unsigned long *target);
+
+struct exception_table_entry;
+void sort_ex_table(struct exception_table_entry *start,
+		   struct exception_table_entry *finish);
+
+#if defined(CONFIG_MODVERSIONS) && defined(CONFIG_PPC64)
+#define ARCH_RELOCATES_KCRCTAB
+#define reloc_start PHYSICAL_START
+#endif
+#endif /* __KERNEL__ */
+#endif	/* _ASM_POWERPC_MODULE_H */
-- 
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