summaryrefslogtreecommitdiffstats
path: root/kernel/arch/powerpc/include/asm/module.h
diff options
context:
space:
mode:
authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/include/asm/module.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/powerpc/include/asm/module.h')
-rw-r--r--kernel/arch/powerpc/include/asm/module.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/include/asm/module.h b/kernel/arch/powerpc/include/asm/module.h
new file mode 100644
index 000000000..dcfcad139
--- /dev/null
+++ b/kernel/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 */