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Re: [Minios-devel] [UNIKRAFT PATCH 1/4] plat/linuxu: Provider linker scripts (arm, x86_64)
On 02/12/2018 05:00 PM, Simon Kuenzer wrote:
Provide linker scripts for generating Linux binaries.
The main purpose is to enable adding custom Unikraft
sections later.
Signed-off-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
Reviewed-by: Florian Schmidt <florian.schmidt@xxxxxxxxx>
---
plat/linuxu/Linker.uk | 11 ++++--
plat/linuxu/arm/link32.ld | 82 +++++++++++++++++++++++++++++++++++++++++++++
plat/linuxu/x86/link64.ld | 85 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 176 insertions(+), 2 deletions(-)
create mode 100644 plat/linuxu/arm/link32.ld
create mode 100644 plat/linuxu/x86/link64.ld
diff --git a/plat/linuxu/Linker.uk b/plat/linuxu/Linker.uk
index 16a5b15..10e501f 100644
--- a/plat/linuxu/Linker.uk
+++ b/plat/linuxu/Linker.uk
@@ -1,4 +1,11 @@
-LINUXU_LDFLAGS-y += -e_liblinuxuplat_start
+ifeq (x86_64,$(UK_ARCH))
+LINUXU_LDSCRIPT := $(UK_PLAT_LINUXU_BASE)/x86/link64.ld
+LINUXU_LDFLAGS-y += -m elf_x86_64
+endif
+ifeq (arm,$(UK_ARCH))
+LINUXU_LDSCRIPT := $(UK_PLAT_LINUXU_BASE)/arm/link32.ld
+endif
+
##
## Link image
@@ -7,7 +14,7 @@ LINUXU_IMAGE := $(BUILD_DIR)/$(UK_NAME)_linuxu-$(UK_ARCH)
$(LINUXU_IMAGE): $(LINUXU_LINK) $(LINUXU_LINK-y) $(UK_LINK) $(UK_LINK-y)
$(call build_cmd,LD,,$@,\
- $(LD) $(LDFLAGS) $(LDFLAGS-y) $(LINUXU_LDFLAGS)
$(LINUXU_LDFLAGS-y) $^ -o $@)
+ $(LD) $(LDFLAGS) $(LDFLAGS-y) $(LINUXU_LDFLAGS)
$(LINUXU_LDFLAGS-y) -T $(LINUXU_LDSCRIPT) $^ -o $@)
ifeq ($(OPTIMIZE_DBGFILE),y)
$(call build_cmd,OBJCOPY,,$@.dbg,\
$(OBJCOPY) --only-keep-debug $@ $@.dbg)
diff --git a/plat/linuxu/arm/link32.ld b/plat/linuxu/arm/link32.ld
new file mode 100644
index 0000000..7dac4f6
--- /dev/null
+++ b/plat/linuxu/arm/link32.ld
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
+ *
+ * Copyright (c) 2017, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * 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 the copyright holder 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.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+OUTPUT_ARCH(arm)
+ENTRY(_liblinuxuplat_start)
+SECTIONS {
+ . = 0x10074; /* TODO: Revisit */
+
+ /* Code */
+ _text = .;
+
+ .text :
+ {
+ *(.text)
+ *(.text.*)
+ }
+ . = ALIGN(0x1000);
+ _etext = .;
+
+ /* Read-only data */
+ _rodata = .;
+ .rodata :
+ {
+ *(.rodata)
+ *(.rodata.*)
+ }
+ . = ALIGN(0x1000);
+ _erodata = .;
+
+ /* Read-write data (initialized) */
+ _data = .;
+ .data :
+ {
+ *(.data)
+ *(.data.*)
+ }
+ . = ALIGN(0x1000);
+ _edata = .;
+
+ /* Read-write data (uninitialized) */
+ _bss = .;
+ .bss :
+ {
+ *(.bss)
+ *(.bss.*)
+ }
+ . = ALIGN(0x1000);
+ _ebss = .;
+
+ _end = .;
+}
diff --git a/plat/linuxu/x86/link64.ld b/plat/linuxu/x86/link64.ld
new file mode 100644
index 0000000..a7d642d
--- /dev/null
+++ b/plat/linuxu/x86/link64.ld
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
+ *
+ * Copyright (c) 2017, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * 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 the copyright holder 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.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+OUTPUT_FORMAT("elf64-x86-64")
+OUTPUT_ARCH(i386:x86-64)
+ENTRY(_liblinuxuplat_start)
+SECTIONS {
+ . = 0x4000b0; /* TODO: Revisit */
+
+ /* Code */
+ _text = .;
+
+ .text :
+ {
+ *(.text)
+ *(.text.*)
+ }
+ . = ALIGN(0x1000);
+ _etext = .;
+
+ /* Read-only data */
+ _rodata = .;
+ .rodata :
+ {
+ *(.rodata)
+ *(.rodata.*)
+ }
+ . = ALIGN(0x1000);
+ _erodata = .;
+
+ /*. = 0x8000000;*/
+
+ /* Read-write data (initialized) */
+ _data = .;
+ .data :
+ {
+ *(.data)
+ *(.data.*)
+ }
+ . = ALIGN(0x1000);
+ _edata = .;
+
+ /* Read-write data (uninitialized) */
+ _bss = .;
+ .bss :
+ {
+ *(.bss)
+ *(.bss.*)
+ }
+ . = ALIGN(0x1000);
+ _ebss = .;
+
+ _end = .;
+}
--
Dr. Florian Schmidt
フローリアン・シュミット
Research Scientist,
Systems and Machine Learning Group
NEC Laboratories Europe
Kurfürsten-Anlage 36, D-69115 Heidelberg
Tel. +49 (0)6221 4342-265
Fax: +49 (0)6221 4342-155
e-mail: florian.schmidt@xxxxxxxxx
============================================================
Registered at Amtsgericht Mannheim, Germany, HRB728558
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