arc: linker.ld: Port vector table to zephyr_linker_sources()

Place it in its own linker file snippet.

Signed-off-by: Øyvind Rønningstad <oyvind.ronningstad@nordicsemi.no>

arch/arc/core/CMakeLists.txt

@@ -30,3 +30,5 @@ zephyr_library_sources_ifdef(CONFIG_ARC_CONNECT arc_smp.c)
 
 add_subdirectory_ifdef(CONFIG_ARC_CORE_MPU mpu)
 add_subdirectory_ifdef(CONFIG_ARC_SECURE_FIRMWARE secureshield)
+
+zephyr_linker_sources(TEXT_START SORT_KEY 0x0vectors vector_table.ld)

arch/arc/core/vector_table.ld

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2019 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* when !XIP, .text is in RAM, and vector table must be at its very start */
+
+KEEP(*(.exc_vector_table))
+KEEP(*(".exc_vector_table.*"))
+KEEP(*(IRQ_VECTOR_TABLE))

include/arch/arc/v2/linker.ld

@@ -91,11 +91,6 @@ SECTIONS {
  * zephyr_linker_sources() Cmake function.
  */
 #include <snippets-text-start.ld>
-/* when !XIP, .text is in RAM, and vector table must be at its very start */
-
-		KEEP(*(.exc_vector_table))
-		KEEP(*(".exc_vector_table.*"))
-		KEEP(*(IRQ_VECTOR_TABLE))
 
 		*(.text)
 		*(".text.*")