svn commit: r296428 - head/sys/boot/common

[Dimitry Andric]

Author: dim
Date: Sun Mar  6 15:57:43 2016
New Revision: 296428
URL: https://svnweb.freebsd.org/changeset/base/296428

Log:
  Since kernel modules can now contain sections of type SHT_AMD64_UNWIND,
  the boot loader should not skip over these anymore while loading images.
  Otherwise the kernel can still panic when it doesn't find the .eh_frame
  section belonging to the .rela.eh_frame section.
  
  Unfortunately this will require installing boot loaders from sys/boot
  before attempting to boot with a new kernel.
  
  Reviewed by:	kib
  MFC after:	2 weeks
  X-MFC-With:	r296419

Modified:
  head/sys/boot/common/load_elf_obj.c

Modified: head/sys/boot/common/load_elf_obj.c
==============================================================================
--- head/sys/boot/common/load_elf_obj.c	Sun Mar  6 14:37:49 2016	(r296427)
+++ head/sys/boot/common/load_elf_obj.c	Sun Mar  6 15:57:43 2016	(r296428)
@@ -221,6 +221,9 @@ __elfN(obj_loadimage)(struct preloaded_f
 		switch (shdr[i].sh_type) {
 		case SHT_PROGBITS:
 		case SHT_NOBITS:
+#if defined(__i386__) || defined(__amd64__)
+		case SHT_AMD64_UNWIND:
+#endif
 			lastaddr = roundup(lastaddr, shdr[i].sh_addralign);
 			shdr[i].sh_addr = (Elf_Addr)lastaddr;
 			lastaddr += shdr[i].sh_size;