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linker: allow SoC to insert linker script fragments

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This allows the SoC to specify some additional linker script
fragments into the bss, data and read-only data sections.

For example, the Cypress PSOC6 has a few input sections that
must be put into bss and data sections. Without specifying
these in the linker script, they are consider orphan sections
and the placement is based on linker heuristic which is
arbitrary.

POSIX is not supported as the main linker script is
provided by the host system's binutils and we have no control
over it. Also, currently Xtensa SoCs have their own linker
scripts so there is no need to this feature.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2018-10-08 11:49:39 -07:00 • committed by Anas Nashif
commit 2fed930f4e
7 changed files with 113 additions and 0 deletions
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12
include/arch/arc/v2/linker.ld
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@ -107,6 +107,10 @@ SECTIONS {
*(".rodata.*")
*(.gnu.linkonce.r.*)
#ifdef CONFIG_SOC_RODATA_LD
#include <soc-rodata.ld>
#endif
#ifdef CONFIG_CUSTOM_RODATA_LD
/* Located in project source directory */
#include <custom-rodata.ld>
@ -228,6 +232,10 @@ SECTIONS {
KERNEL_INPUT_SECTION(".noinit.*")
*(".kernel_noinit.*")
#ifdef CONFIG_SOC_NOINIT_LD
#include <soc-noinit.ld>
#endif
} GROUP_LINK_IN(RAMABLE_REGION)
SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,) {
@ -238,6 +246,10 @@ SECTIONS {
KERNEL_INPUT_SECTION(".data.*")
*(".kernel.*")
#ifdef CONFIG_SOC_RWDATA_LD
#include <soc-rwdata.ld>
#endif
#ifdef CONFIG_CUSTOM_RWDATA_LD
/* Located in project source directory */
#include <custom-rwdata.ld>