bfd/

	* bfd-in.h (bfd_elf_stack_segment_size): Declare.
	* bfd-in2.h: Rebuilt.
	* elfxx-target.h (elf_backend_stack_align): New.
	(elfNN_bed): Add it.
	* elf-bfd.h (struct elf_backend_data): Add stack_align field.
	* elf.c (bfd_elf_map_sections_to_segments): Pay attention to
	stack_align and stacksize for PT_GNU_STACK segment.
	(assign_file_positions_for_non_load_sections): Set p_memsz for
	PT_GNU_STACK segment.
	(copy_elf_program_header): Copy PT_GNU_STACK size.
	* elflink.c (bfd_elf_stack_segment_size): New function, taken from
	uclinux backends.
	(bfd_elf_size_dynamic_sections): Determine
	PT_GNU_STACK requirements after calling backend.  Pay attention to
	stacksize.
	* elf32-bfin.c (elf32_bfinfdpic_always_size_sections): Call
	bfd_elf_stack_segment_size.
	(elf32_bfinfdpic_modify_program_headers): Delete.
	(elf32_bfingfdpic_copy_private_bfd_data): Don't copy PT_GNU_STACK
	here.
	(elf_backend_stack_align): Override.
	(elf_backend_modify_program_headers): Don't override.
	* elf32-frv.c (frvfdpic_always_size_sections): Call
	bfd_elf_stack_segment_size.
	(elf32_frvfdpic_modify_program_headers): Delete.
	(elf32_frvfdpic_copy_private_bfd_data): Don't copy PT_GNU_STACK
	here.
	(elf_backend_stack_align): Override.
	(elf_backend_modify_program_headers): Don't override.
	* elf32-lm32.c (lm32_elf_always_size_sections): Leave
	PT_GNU_STACK creation to underlying elf support.  Check
	__stacksize here for backwards compatibility, and set it if
	needed.
	(lm32_elf_modify_segment_map): Delete.
	(lm32_elf_modify_program_headers): Delete.
	(elf_backend_stack_align): Override.
	(elf_backend_modify_segment_map): Don't override.
	(elf_backend_modify_program_headers): Don't override.
	* elf32-sh.c (sh_elf_always_size_sections): Call
	bfd_elf_stack_segment_size.
	(sh_elf_modify_program_headers): Delete.
	(sh_elf_copy_private_data): Don't copy PT_GNU_STACK
	here.
	(elf_backend_stack_align): Override.
	(elf_backend_modify_program_headers): Don't override.
	* elf32-tic6x.c (elf32_tic6x_always_size_sections): Call
	bfd_elf_stack_segment_size.
	(elf32_tic6x_modify_program_headers): Delete.
	(elf32_tic6x_copy_private_data): Delete.
	(elf_backend_stack_align): Override.
	(bfd_elf32_bfd_copy_private_bfd_data): Don't override.
	(elf_backend_modify_program_headers): Don't override.

	include/
	* bfdlink.h (struct bfd_link_info): Add stacksize option.

	ld/
	* ld.texinfo (stack-size): New option.
	* emultempl/elf32.em: Add stack-size option.

	ld/testsuite/
	* ld-elf/binutils.exp: Add -z stack-size=0.
	* ld-elf/elf.exp: Add stack-exec and stack-size tests.
	* ld-elf/orphan-region.d: Add stack-size option. Remove xfail.
	* ld-elf/stack-exec.rd: New.
	* ld-elf/stack-size.rd: New.
	* ld-elf/stack.s: New.
	* ld-scripts/empty-aligned.d: Add stack-size option.
	* ld-sh/fdpic-stack-set.d: New.
	* ld-tic6x/shlib-1.rd: Remove __stacksize symbol.
	* ld-tic6x/shlib-1b.rd: Likewise.
	* ld-tic6x/shlib-1r.rd: Likewise.
	* ld-tic6x/shlib-1rb.rd: Likewise.
	* ld-tic6x/shlib-app-1.rd: Likewise.
	* ld-tic6x/shlib-app-1b.rd: Likewise.
	* ld-tic6x/shlib-app-1r.rd: Likewise.
	* ld-tic6x/shlib-app-1rb.rd: Likewise.
	* ld-tic6x/shlib-noindex.rd: Likewise.
	* ld-tic6x/static-app-1.rd: Likewise.
	* ld-tic6x/static-app-1b.rd: Likewise.
	* ld-tic6x/static-app-1r.rd: Likewise.
	* ld-tic6x/static-app-1rb.rd: Likewise.

1 files changed, 17 insertions, 2 deletions

diff --git a/bfd/elf.c b/bfd/elf.c
index f01480bf836..cab1cc74c78 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -4140,7 +4140,14 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
 	  m->next = NULL;
 	  m->p_type = PT_GNU_STACK;
 	  m->p_flags = elf_tdata (abfd)->stack_flags;
+	  m->p_align = bed->stack_align;
 	  m->p_flags_valid = 1;
+	  m->p_align_valid = m->p_align != 0;
+	  if (info->stacksize > 0)
+	    {
+	      m->p_size = info->stacksize;
+	      m->p_size_valid = 1;
+	    }
 
 	  *pm = m;
 	  pm = &m->next;
@@ -5022,6 +5029,11 @@ assign_file_positions_for_non_load_sections (bfd *abfd,
 	      p->p_type = PT_NULL;
 	    }
 	}
+      else if (p->p_type == PT_GNU_STACK)
+	{
+	  if (m->p_size_valid)
+	    p->p_memsz = m->p_size;
+	}
       else if (m->count != 0)
 	{
 	  if (p->p_type != PT_LOAD
@@ -6166,12 +6178,15 @@ copy_elf_program_header (bfd *ibfd, bfd *obfd)
       map->p_align_valid = 1;
       map->p_vaddr_offset = 0;
 
-      if (map->p_type == PT_GNU_RELRO)
+      if (map->p_type == PT_GNU_RELRO
+	  || map->p_type == PT_GNU_STACK)
 	{
 	  /* The PT_GNU_RELRO segment may contain the first a few
 	     bytes in the .got.plt section even if the whole .got.plt
 	     section isn't in the PT_GNU_RELRO segment.  We won't
-	     change the size of the PT_GNU_RELRO segment.  */
+	     change the size of the PT_GNU_RELRO segment.
+	     Similarly, PT_GNU_STACK size is significant on uclinux
+	     systems.    */
 	  map->p_size = segment->p_memsz;
 	  map->p_size_valid = 1;
 	}