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-rw-r--r--include/asm-generic/sections.h117
1 files changed, 117 insertions, 0 deletions
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
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+++ b/include/asm-generic/sections.h
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+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Taken from Linux kernel, commit f56c3196 */
+
+#ifndef _ASM_GENERIC_SECTIONS_H_
+#define _ASM_GENERIC_SECTIONS_H_
+
+/* References to section boundaries */
+
+extern char _text[], _stext[], _etext[];
+extern char _data[], _sdata[], _edata[];
+extern char __bss_start[], __bss_stop[];
+extern char __init_begin[], __init_end[];
+extern char _sinittext[], _einittext[];
+extern char _end[];
+extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
+extern char __kprobes_text_start[], __kprobes_text_end[];
+extern char __entry_text_start[], __entry_text_end[];
+extern char __initdata_begin[], __initdata_end[];
+extern char __start_rodata[], __end_rodata[];
+
+/* Start and end of .ctors section - used for constructor calls. */
+extern char __ctors_start[], __ctors_end[];
+
+/* function descriptor handling (if any). Override
+ * in asm/sections.h */
+#ifndef dereference_function_descriptor
+#define dereference_function_descriptor(p) (p)
+#endif
+
+/* random extra sections (if any). Override
+ * in asm/sections.h */
+#ifndef arch_is_kernel_text
+static inline int arch_is_kernel_text(unsigned long addr)
+{
+ return 0;
+}
+#endif
+
+#ifndef arch_is_kernel_data
+static inline int arch_is_kernel_data(unsigned long addr)
+{
+ return 0;
+}
+#endif
+
+/* U-Boot-specific things begin here */
+
+/* Start of U-Boot text region */
+extern char __text_start[];
+
+/* This marks the end of the text region which must be relocated */
+extern char __image_copy_end[];
+
+/*
+ * This is the U-Boot entry point - prior to relocation it should be same
+ * as __text_start
+ */
+extern void _start(void);
+
+/*
+ * ARM needs to use offsets for symbols, since the values of some symbols
+ * are not resolved prior to relocation (and are just 0). Maybe this can be
+ * resolved, or maybe other architectures are similar, iwc this should be
+ * promoted to an architecture option.
+ */
+#ifdef CONFIG_ARM
+#define CONFIG_SYS_SYM_OFFSETS
+#endif
+
+#ifdef CONFIG_SYS_SYM_OFFSETS
+/* Start/end of the relocation entries, as an offset from _start */
+extern ulong _rel_dyn_start_ofs;
+extern ulong _rel_dyn_end_ofs;
+
+/* Start/end of the relocation symbol table, as an offset from _start */
+extern ulong _dynsym_start_ofs;
+
+/* End of the region to be relocated, as an offset form _start */
+extern ulong _image_copy_end_ofs;
+
+extern ulong _bss_start_ofs; /* BSS start relative to _start */
+extern ulong _bss_end_ofs; /* BSS end relative to _start */
+extern ulong _end_ofs; /* end of image relative to _start */
+
+extern ulong _TEXT_BASE; /* code start */
+
+#else /* don't use offsets: */
+
+/* Exports from the Linker Script */
+extern ulong __data_end;
+extern ulong __rel_dyn_start;
+extern ulong __rel_dyn_end;
+extern ulong __bss_end;
+
+extern ulong _TEXT_BASE; /* code start */
+
+#endif
+
+#endif /* _ASM_GENERIC_SECTIONS_H_ */