arm/aa64: fix the size of .rela* sections

The previous commit(*) merged .rel* and .dyn* into .rodata, and this made ld to generate the wrong size for .rela* sections that covered other unrelated sections. When the EFI image was loaded, _relocate() went through the unexpected data and may cause unexpected crash. This commit moves .rel* and .dyn* out of .rodata in the ld script but also moves the related variables, such as _evrodata, _rodata_size, and _rodata_vsize, to the end of the new .dyn section, so that the crafted pe-coff section header for .rodata still covers our new .rela and .dyn sections. (*) 212ba30 ("arm/aa64 targets: put .rel* and .dyn* in .rodata") Fix issue: rhboot#371 Signed-off-by: Gary Lin <[email protected]>
lcp · Jun 17, 2021 · 9828f65 · 9828f65
1 parent 05875f3
commit 9828f65
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Showing 3 changed files with 34 additions and 18 deletions.
diff --git a/Makefile b/Makefile
@@ -247,7 +247,7 @@ ifneq ($(OBJCOPY_GTE224),1)
 endif
 	$(OBJCOPY) -D -j .text -j .sdata -j .data -j .data.ident \
 		-j .dynamic -j .rodata -j .rel* \
-		-j .rela* -j .reloc -j .eh_frame \
+		-j .rela* -j .dyn -j .reloc -j .eh_frame \
 		-j .vendor_cert -j .sbat \
 		$(FORMAT) $< $@
 	./post-process-pe -vv $@
@@ -263,7 +263,7 @@ ifneq ($(OBJCOPY_GTE224),1)
 endif
 	$(OBJCOPY) -D -j .text -j .sdata -j .data \
 		-j .dynamic -j .rodata -j .rel* \
-		-j .rela* -j .reloc -j .eh_frame -j .sbat \
+		-j .rela* -j .dyn -j .reloc -j .eh_frame -j .sbat \
 		-j .debug_info -j .debug_abbrev -j .debug_aranges \
 		-j .debug_line -j .debug_str -j .debug_ranges \
 		-j .note.gnu.build-id \

diff --git a/elf_aarch64_efi.lds b/elf_aarch64_efi.lds
@@ -70,21 +70,29 @@ SECTIONS
   .rodata :
   {
     _rodata = .;
-    *(.rela.dyn)
-    *(.rela.plt)
-    *(.rela.got)
-    *(.rela.data)
-    *(.rela.data*)
-
     *(.rodata*)
     *(.srodata)
-    *(.dynsym)
-    *(.dynstr)
     . = ALIGN(16);
     *(.note.gnu.build-id)
     . = ALIGN(4096);
     *(.vendor_cert)
     *(.data.ident)
+    . = ALIGN(4096);
+  }
+  . = ALIGN(4096);
+  .rela :
+  {
+    *(.rela.dyn)
+    *(.rela.plt)
+    *(.rela.got)
+    *(.rela.data)
+    *(.rela.data*)
+  }
+  . = ALIGN(4096);
+  .dyn :
+  {
+    *(.dynsym)
+    *(.dynstr)
     _evrodata = .;
     . = ALIGN(4096);
   }

diff --git a/elf_arm_efi.lds b/elf_arm_efi.lds
@@ -70,21 +70,29 @@ SECTIONS
   .rodata :
   {
     _rodata = .;
-    *(.rel.dyn)
-    *(.rel.plt)
-    *(.rel.got)
-    *(.rel.data)
-    *(.rel.data*)
-
     *(.rodata*)
     *(.srodata)
-    *(.dynsym)
-    *(.dynstr)
     . = ALIGN(16);
     *(.note.gnu.build-id)
     . = ALIGN(4096);
     *(.vendor_cert)
     *(.data.ident)
+    . = ALIGN(4096);
+  }
+  . = ALIGN(4096);
+  .rela :
+  {
+    *(.rela.dyn)
+    *(.rela.plt)
+    *(.rela.got)
+    *(.rela.data)
+    *(.rela.data*)
+  }
+  . = ALIGN(4096);
+  .dyn :
+  {
+    *(.dynsym)
+    *(.dynstr)
     _evrodata = .;
     . = ALIGN(4096);
   }