arch: arm: MPU-align GCOV section, only if CONFIG_USERSPACE=y

The GCOV section is programmed as a static MPU region, only
in builds with support for User Mode, otherwise it is not
programmed into an MPU region at all. To reflect this in the
linker, the MPU-alignment for GCOV section is enforced only
under CONFIG_USERSPACE=y. Otherwise, single-word alignment
is enforced.

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

include/arch/arm/cortex_m/scripts/linker.ld

@@ -332,18 +332,20 @@ SECTIONS
     SECTION_DATA_PROLOGUE(_GCOV_BSS_SECTION_NAME,(NOLOAD),)
 	{
 
-#ifdef CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT
-       . = ALIGN( 1 << LOG2CEIL(__gcov_bss_end - __gcov_bss_start ));
-#endif /* CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT */
+#ifdef CONFIG_USERSPACE
+       MPU_ALIGN(__gcov_bss_end - __gcov_bss_start );
+#else  /* CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT && CONFIG_USERSPACE */
+       . = ALIGN(_region_min_align);
+#endif /* CONFIG_USERSPACE */
 
        __gcov_bss_start = .;
        KEEP(*(".bss.__gcov0.*"));
 
-#ifdef CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT
-       . = ALIGN( 1 << LOG2CEIL(__gcov_bss_end - __gcov_bss_start ));
-#else  /* CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT */
-       . = ALIGN(4);
-#endif /* CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT */
+#ifdef CONFIG_USERSPACE
+       MPU_ALIGN(__gcov_bss_end - __gcov_bss_start );
+#else  /* CONFIG_USERSPACE */
+       . = ALIGN(_region_min_align);
+#endif /* CONFIG_USERSPACE */
 
        __gcov_bss_end = .;