x86: Properly set IBT and SHSTK properties for -z ibt/shstk

[deliverable/binutils-gdb.git] / bfd / compress.c

diff --git a/bfd/compress.c b/bfd/compress.c
index 53e566e498e13b29b8c6095e230efee145d6e12b..b5db7a76bedc71307768299d9e738192c3c210bf 100644 (file)
--- a/bfd/compress.c
+++ b/bfd/compress.c
@@ -1,5 +1,5 @@
 /* Compressed section support (intended for debug sections).
-   Copyright (C) 2008-2018 Free Software Foundation, Inc.
+   Copyright (C) 2008-2019 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -84,11 +84,13 @@ bfd_compress_section_contents (bfd *abfd, sec_ptr sec,
   int zlib_size = 0;
   int orig_compression_header_size;
   bfd_size_type orig_uncompressed_size;
+  unsigned int orig_uncompressed_alignment_pow;
   int header_size = bfd_get_compression_header_size (abfd, NULL);
   bfd_boolean compressed
     = bfd_is_section_compressed_with_header (abfd, sec,
                                             &orig_compression_header_size,
-                                            &orig_uncompressed_size);
+                                            &orig_uncompressed_size,
+                                            &orig_uncompressed_alignment_pow);
 
   /* Either ELF compression header or the 12-byte, "ZLIB" + 8-byte size,
      overhead in .zdebug* section.  */
@@ -153,6 +155,9 @@ bfd_compress_section_contents (bfd *abfd, sec_ptr sec,
              return 0;
            }
          free (uncompressed_buffer);
+         bfd_set_section_alignment (abfd, sec,
+                                    orig_uncompressed_alignment_pow);
+
          sec->contents = buffer;
          sec->compress_status = COMPRESS_SECTION_DONE;
          return orig_uncompressed_size;
@@ -364,20 +369,24 @@ SYNOPSIS
        bfd_boolean bfd_is_section_compressed_with_header
          (bfd *abfd, asection *section,
          int *compression_header_size_p,
-         bfd_size_type *uncompressed_size_p);
+         bfd_size_type *uncompressed_size_p,
+         unsigned int *uncompressed_alignment_power_p);
 
 DESCRIPTION
        Return @code{TRUE} if @var{section} is compressed.  Compression
-       header size is returned in @var{compression_header_size_p} and
-       uncompressed size is returned in @var{uncompressed_size_p}.  If
-       compression is unsupported, compression header size is returned
-       with -1 and uncompressed size is returned with 0.
+       header size is returned in @var{compression_header_size_p},
+       uncompressed size is returned in @var{uncompressed_size_p}
+       and the uncompressed data alignement power is returned in
+       @var{uncompressed_align_pow_p}.  If compression is
+       unsupported, compression header size is returned with -1
+       and uncompressed size is returned with 0.
 */
 
 bfd_boolean
 bfd_is_section_compressed_with_header (bfd *abfd, sec_ptr sec,
                                       int *compression_header_size_p,
-                                      bfd_size_type *uncompressed_size_p)
+                                      bfd_size_type *uncompressed_size_p,
+                                      unsigned int *uncompressed_align_pow_p)
 {
   bfd_byte header[MAX_COMPRESSION_HEADER_SIZE];
   int compression_header_size;
@@ -385,6 +394,8 @@ bfd_is_section_compressed_with_header (bfd *abfd, sec_ptr sec,
   unsigned int saved = sec->compress_status;
   bfd_boolean compressed;
 
+  *uncompressed_align_pow_p = 0;
+
   compression_header_size = bfd_get_compression_header_size (abfd, sec);
   if (compression_header_size > MAX_COMPRESSION_HEADER_SIZE)
     abort ();
@@ -412,7 +423,8 @@ bfd_is_section_compressed_with_header (bfd *abfd, sec_ptr sec,
       if (compression_header_size != 0)
        {
          if (!bfd_check_compression_header (abfd, header, sec,
-                                            uncompressed_size_p))
+                                            uncompressed_size_p,
+                                            uncompressed_align_pow_p))
            compression_header_size = -1;
        }
       /* Check for the pathalogical case of a debug string section that
@@ -449,9 +461,11 @@ bfd_is_section_compressed (bfd *abfd, sec_ptr sec)
 {
   int compression_header_size;
   bfd_size_type uncompressed_size;
+  unsigned int uncompressed_align_power;
   return (bfd_is_section_compressed_with_header (abfd, sec,
                                                 &compression_header_size,
-                                                &uncompressed_size)
+                                                &uncompressed_size,
+                                                &uncompressed_align_power)
          && compression_header_size >= 0
          && uncompressed_size > 0);
 }
@@ -480,6 +494,7 @@ bfd_init_section_decompress_status (bfd *abfd, sec_ptr sec)
   int compression_header_size;
   int header_size;
   bfd_size_type uncompressed_size;
+  unsigned int uncompressed_alignment_power = 0;
 
   compression_header_size = bfd_get_compression_header_size (abfd, sec);
   if (compression_header_size > MAX_COMPRESSION_HEADER_SIZE)
@@ -508,7 +523,8 @@ bfd_init_section_decompress_status (bfd *abfd, sec_ptr sec)
       uncompressed_size = bfd_getb64 (header + 4);
     }
   else if (!bfd_check_compression_header (abfd, header, sec,
-                                        &uncompressed_size))
+                                         &uncompressed_size,
+                                         &uncompressed_alignment_power))
     {
       bfd_set_error (bfd_error_wrong_format);
       return FALSE;
@@ -516,6 +532,7 @@ bfd_init_section_decompress_status (bfd *abfd, sec_ptr sec)
 
   sec->compressed_size = sec->size;
   sec->size = uncompressed_size;
+  bfd_set_section_alignment (abfd, sec, uncompressed_alignment_power);
   sec->compress_status = DECOMPRESS_SECTION_SIZED;
 
   return TRUE;