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From: "Liming Gao" <liming.gao@intel.com>
To: devel@edk2.groups.io
Subject: [Patch 1/7] BaseTools: Add ClangBase.lds for CLANG8 tool chain with max-page-size
Date: Fri, 26 Apr 2019 22:42:36 +0800	[thread overview]
Message-ID: <20190426144242.19024-2-liming.gao@intel.com> (raw)
In-Reply-To: <20190426144242.19024-1-liming.gao@intel.com>

LLVM LLD linker doesn't support common-page-size option. So, max-page-size
is used. To not impact GCC tool chain, new ClangBase.lds is added.

Signed-off-by: Liming Gao <liming.gao@intel.com>
---
 BaseTools/Scripts/ClangBase.lds | 79 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 BaseTools/Scripts/ClangBase.lds

diff --git a/BaseTools/Scripts/ClangBase.lds b/BaseTools/Scripts/ClangBase.lds
new file mode 100644
index 0000000000..8abd54aee6
--- /dev/null
+++ b/BaseTools/Scripts/ClangBase.lds
@@ -0,0 +1,79 @@
+/** @file
+
+  Unified linker script for GCC based builds
+
+  Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
+  (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+SECTIONS {
+
+  /*
+   * The PE/COFF binary consists of DOS and PE/COFF headers, and a sequence of
+   * section headers adding up to PECOFF_HEADER_SIZE bytes (which differs
+   * between 32-bit and 64-bit builds). The actual start of the .text section
+   * will be rounded up based on its actual alignment.
+   */
+  . = PECOFF_HEADER_SIZE;
+
+  .text : ALIGN(CONSTANT(MAXPAGESIZE)) {
+    *(.text .text.* .stub .gnu.linkonce.t.*)
+    *(.rodata .rodata.* .gnu.linkonce.r.*)
+    *(.got .got.*)
+
+    /*
+     * The contents of AutoGen.c files are mostly constant from the POV of the
+     * program, but most of it ends up in .data or .bss by default since few of
+     * the variable definitions that get emitted are declared as CONST.
+     * Unfortunately, we cannot pull it into the .text section entirely, since
+     * patchable PCDs are also emitted here, but we can at least move all of the
+     * emitted GUIDs here.
+     */
+    *:AutoGen.obj(.data.g*Guid)
+  }
+
+  /*
+   * The alignment of the .data section should be less than or equal to the
+   * alignment of the .text section. This ensures that the relative offset
+   * between these sections is the same in the ELF and the PE/COFF versions of
+   * this binary.
+   */
+  .data ALIGN(ALIGNOF(.text)) : ALIGN(CONSTANT(MAXPAGESIZE)) {
+    *(.data .data.* .gnu.linkonce.d.*)
+    *(.bss .bss.*)
+  }
+
+  .eh_frame ALIGN(CONSTANT(MAXPAGESIZE)) : {
+    KEEP (*(.eh_frame))
+  }
+
+  .rela (INFO) : {
+    *(.rela .rela.*)
+  }
+
+  .hii : ALIGN(CONSTANT(MAXPAGESIZE)) {
+    KEEP (*(.hii))
+  }
+
+  /*
+   * Retain the GNU build id but in a non-allocatable section so GenFw
+   * does not copy it into the PE/COFF image.
+   */
+  .build-id (INFO) : { *(.note.gnu.build-id) }
+
+  /DISCARD/ : {
+    *(.note.GNU-stack)
+    *(.gnu_debuglink)
+    *(.interp)
+    *(.dynsym)
+    *(.dynstr)
+    *(.dynamic)
+    *(.hash .gnu.hash)
+    *(.comment)
+    *(COMMON)
+  }
+}
-- 
2.13.0.windows.1


  reply	other threads:[~2019-04-26 14:42 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-26 14:42 [Patch 0/7] Add new CLANG8ELF tool chain for new LLVM/CLANG8 Liming Gao
2019-04-26 14:42 ` Liming Gao [this message]
2019-04-26 14:42 ` [Patch 2/7] BaseTools GenFw: Support CLANG8ELF with conversion ELF to PE/COFF image Liming Gao
2019-04-26 14:42 ` [Patch 3/7] BaseTools: Update build_rule.template for ASLC rule with full C flags Liming Gao
2019-04-26 14:42 ` [Patch 4/7] BaseTools: Update build_rule to skip CLANG resource section generation Liming Gao
2019-04-26 14:42 ` [Patch 5/7] BaseTools: Update tools_def.template to directly refer to AutoGen.h Liming Gao
2019-04-26 14:42 ` [Patch 6/7] BaseTools: Add new CLANG8ELF tool chain for new LLVM/CLANG8 Liming Gao
2019-05-17  1:16   ` [edk2-devel] " Bob Feng
2019-04-26 14:42 ` [Patch 7/7] OvmfPkg: Update DSC/FDF to support CLANG8ELF tool chain Liming Gao
2019-05-19 13:24   ` [edk2-devel] " Ard Biesheuvel
2019-05-19 13:45     ` Liming Gao
2019-05-20 14:33   ` Laszlo Ersek
2019-04-26 16:33 ` [edk2-devel] [Patch 0/7] Add new CLANG8ELF tool chain for new LLVM/CLANG8 Ard Biesheuvel
2019-04-28  0:55   ` Liming Gao
2019-04-29 16:51     ` Leif Lindholm
2019-04-30  4:21       ` Liming Gao
2019-04-30 11:01         ` Leif Lindholm
2019-04-30 13:11           ` Steven Shi
2019-05-05  6:18           ` Liming Gao
     [not found]           ` <159BB5054AE8ABA6.12625@groups.io>
2019-05-16 13:29             ` Liming Gao
2019-05-19 20:14     ` Jordan Justen
2019-05-20 13:47       ` Liming Gao
2019-05-20 22:52         ` Andrew Fish
2019-05-21  2:18           ` Liming Gao
2019-05-21  3:36             ` Andrew Fish
     [not found] ` <15990D503F545BBC.4588@groups.io>
2019-05-19 11:59   ` [edk2-devel] [Patch 7/7] OvmfPkg: Update DSC/FDF to support CLANG8ELF tool chain Liming Gao
2019-05-21 21:13 ` [edk2-devel] [Patch 0/7] Add new CLANG8ELF tool chain for new LLVM/CLANG8 Laszlo Ersek

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