linuxkm/Kbuild: refactor RENAME_PIE_TEXT_AND_DATA_SECTIONS to automatically derive the list of all ELF sections to rename, rather than enumerating them staticly in the objcopy recipe (motivated by changes expected in kernel 6.19).

Author: douzzer

linuxkm/Kbuild

@@ -214,19 +214,16 @@ RENAME_PIE_TEXT_AND_DATA_SECTIONS := \
 	    echo 'OK.'; \
 	fi; \
 	cd "$(obj)" || exit $$?; \
-	for file in $(WOLFCRYPT_PIE_FILES); do			\
-	    $(OBJCOPY) --rename-section .text=.text_wolfcrypt	\
-	    --rename-section .text.unlikely=.text_wolfcrypt	\
-	    --rename-section .rodata=.rodata_wolfcrypt		\
-	    --rename-section .rodata.str1.1=.rodata_wolfcrypt	\
-	    --rename-section .rodata.str1.8=.rodata_wolfcrypt	\
-	    --rename-section .rodata.cst16=.rodata_wolfcrypt	\
-	    --rename-section .rodata.cst32=.rodata_wolfcrypt	\
-	    --rename-section .data=.data_wolfcrypt		\
-	    --rename-section .data.rel.local=.data_wolfcrypt    \
-	    --rename-section .bss=.bss_wolfcrypt "$$file" || exit $$?; \
-	done; \
-	[ "$(KERNEL_ARCH_X86)" != "yes" ] ||			\
+	for file in $(WOLFCRYPT_PIE_FILES); do				\
+	    $(OBJCOPY) $$($(READELF) --sections --wide "$$file"	|	\
+	      $(AWK) ' 							\
+	      {								\
+	          if (match($$0, "^ *\\[ *[0-9]+\\] +\\.(text|rodata|data|bss)(\\.[^ ]+)? ", a)) { \
+		      printf("--rename-section .%s%s=.%s_wolfcrypt ", a[1], a[2], a[1]); \
+		  }							\
+	      }') "$$file" || exit $$?;					\
+	done; 								\
+	[ "$(KERNEL_ARCH_X86)" != "yes" ] ||				\
 	{ $(READELF) --sections --syms --wide $(WOLFCRYPT_PIE_FILES) |	\
 	$(AWK) -v obj="$(obj)" '					\
 	    /^File:/ {							\