michaelh/zephyr
1
0
Fork 0
Code Releases Activity

ARC: linker: implement linker related definition for MWDT

Browse source 
Implement linker related definitions and macros for MWDT
toolchain.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
This commit is contained in:
Eugeniy Paltsev 2020-09-02 17:04:19 +03:00 • committed by Maureen Helm
commit c2bb7db3fd
2 changed files with 102 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

100
include/linker/linker-tool-mwdt.h Normal file
View file

@ -0,0 +1,100 @@
/*
* Copyright (c) 2020, Synopsys, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Metware toolchain linker defs
*
* This header file defines the necessary macros used by the linker script for
* use with the metware linker.
*/
#ifndef ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_MWDT_H_
#define ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_MWDT_H_
/*
* mwdt linker doesn't have the following directives
*/
#define ASSERT(x, y)
#define SUBALIGN(x) ALIGN(x)
#define LOG2CEIL(x) ((((x) <= 2048) ? 11 : (((x) <= 4096)?12:(((x) <= 8192) ? \
13 : (((x) <= 16384) ? 14 : (((x) <= 32768) ? 15:(((x) <= 65536) ? \
16 : (((x) <= 131072) ? 17 : (((x) <= 262144) ? 18:(((x) <= 524288) ? \
19 : (((x) <= 1048576) ? 20 : (((x) <= 2097152) ? \
21 : (((x) <= 4194304) ? 22 : (((x) <= 8388608) ? \
23 : (((x) <= 16777216) ? 24 : (((x) <= 33554432) ? \
25 : (((x) <= 67108864) ? 26 : (((x) <= 134217728) ? \
27 : (((x) <= 268435456) ? 28 : (((x) <= 536870912) ? \
29 : (((x) <= 1073741824) ? 30 : (((x) <= 2147483648) ? \
31 : 32))))))))))))))))))))))
/*
* The GROUP_START() and GROUP_END() macros are used to define a group
* of sections located in one memory area, such as RAM, ROM, etc.
* The <where> parameter is the name of the memory area.
*/
#define GROUP_START(where)
#define GROUP_END(where)
/*
* The GROUP_LINK_IN() macro is located at the end of the section
* description and tells the linker that this section is located in
* the memory area specified by <where> argument.
*/
#define GROUP_LINK_IN(where) > where
/*
* As GROUP_LINK_IN(), but takes a second argument indicating the
* memory region (e.g. "ROM") for the load address. Used for
* initialized data sections that on XIP platforms must be copied at
* startup.
*
* And, because output directives in GNU ld are "sticky", this must
* also be used on the first section *after* such an initialized data
* section, specifying the same memory region (e.g. "RAM") for both
* vregion and lregion.
*/
#ifdef CONFIG_XIP
#define GROUP_DATA_LINK_IN(vregion, lregion) > vregion AT > lregion
#else
#define GROUP_DATA_LINK_IN(vregion, lregion) > vregion
#endif
/*
* The GROUP_FOLLOWS_AT() macro is located at the end of the section
* and indicates that the section does not specify an address at which
* it is to be loaded, but that it follows a section which did specify
* such an address
*/
#define GROUP_FOLLOWS_AT(where) AT > where
/*
* The SECTION_PROLOGUE() macro is used to define the beginning of a section.
* The <name> parameter is the name of the section, and the <option> parameter
* is to include any special options such as (NOLOAD). Page alignment has its
* own parameter since it needs abstraction across the different toolchains.
* If not required, the <options> and <align> parameters should be left blank.
*/
#define SECTION_PROLOGUE(name, options, align) name options align :
/*
* As for SECTION_PROLOGUE(), except that this one must (!) be used
* for data sections which on XIP platforms will have differing
* virtual and load addresses (i.e. they'll be copied into RAM at
* program startup). Such a section must (!) also use
* GROUP_LINK_IN_LMA to specify the correct output load address.
*/
#ifdef CONFIG_XIP
#define SECTION_DATA_PROLOGUE(name, options, align) \
name options ALIGN_WITH_INPUT align :
#else
#define SECTION_DATA_PROLOGUE(name, options, align) name options align :
#endif
#define SORT_BY_NAME(x) SORT(x)
#endif /* ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_MWDT_H_ */

2
include/linker/linker-tool.h
View file

@ -18,6 +18,8 @@
#if defined(_LINKER)
#if defined(__GCC_LINKER_CMD__)
#include <linker/linker-tool-gcc.h>
#elif defined(__MWDT_LINKER_CMD__)
#include <linker/linker-tool-mwdt.h>
#else
#error "Unknown toolchain"
#endif