First commit

Signed-off-by:  <inaky.perez-gonzalez@intel.com>

include/linker-defs.h

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+/*
+ * Copyright (c) 2013-2014, Wind River Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1) Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2) Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3) Neither the name of Wind River Systems nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+DESCRIPTION
+Platform independent, commonly used macros and defines related to linker script.
+
+This file may be included by:
+- Linker script files: for linker section declarations
+- C files: for external declaration of address or size of linker section
+- Assembly files: for external declaration of address or size of linker section
+*/
+
+#ifndef _LINKERDEFS_H
+#define _LINKERDEFS_H
+
+#include <toolchain.h>
+#include <sections.h>
+
+/* include platform dependent linker-defs */
+#ifdef VXMICRO_ARCH_x86
+#include <nanokernel/x86/linker-defs-arch.h>
+#elif defined(VXMICRO_ARCH_arm)
+/* Nothing yet to include */
+#elif defined(VXMICRO_ARCH_arc)
+/* Nothing yet to include */
+#else
+#error Arch not supported.
+#endif
+
+#ifdef _LINKER
+#ifdef VXMICRO_ARCH_x86 /* LINKER FILES: defines used by linker script */
+/* Should be moved to linker-common-defs.h */
+#if defined(CONFIG_XIP)
+#define ROMABLE_REGION ROM
+#else
+#define ROMABLE_REGION RAM
+#endif
+#endif
+
+/*
+ * If image is loaded via kexec Linux system call, then program
+ * headers need to be page aligned.
+ * This can be done by section page aligning.
+ */
+#ifdef CONFIG_BOOTLOADER_KEXEC
+#define KEXEC_PGALIGN_PAD(x) . = ALIGN(x);
+#else
+#define KEXEC_PGALIGN_PAD(x)
+#endif
+
+#elif defined(_ASMLANGUAGE)
+/* Assembly FILES: declaration defined by the linker script */
+GDATA(__bss_start)
+GDATA(__bss_num_words)
+#ifdef CONFIG_XIP
+GDATA(__data_rom_start)
+GDATA(__data_ram_start)
+GDATA(__data_num_words)
+#endif
+
+#else
+
+#include <stdint.h>
+extern char __bss_start[];
+extern int __bss_num_words[];
+#ifdef CONFIG_XIP
+extern char __data_rom_start[];
+extern char __data_ram_start[];
+extern int __data_num_words[];
+#endif
+
+/* C FILES: declaration defined by the linker script */
+
+#ifdef VXMICRO_ARCH_x86
+#include <cputype.h> /* VIRT_ADDR, PHYS_ADDR */
+#endif /* VXMICRO_ARCH_x86 */
+
+/* end address of image. */
+extern char _end[];
+#define _END_VPAGE (VIRT_ADDR) _end
+
+#endif /* ! _ASMLANGUAGE */
+
+#endif /* _LINKERDEFS_H */