bfd: use "stack trace" instead of "unwind" for SFrame

SFrame format is meant for generating stack traces only.

bfd/
	* elf-bfd.h: Replace the use of "unwind" with "stack trace".
	* elf-sframe.c: Likewise.
	* elf64-x86-64.c: Likewise.
	* elfxx-x86.c: Likewise.

include/
	* elf/common.h: Likewise.

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 2b7c574f540b55bbc8cccb22f5b60b96f730307d..dff198225474d6be28054914ad2d67ad76be954f 100644 (file)
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -702,7 +702,7 @@ struct elf_link_hash_table
   /* Used by eh_frame code when editing .eh_frame.  */
   struct eh_frame_hdr_info eh_info;
 
-  /* Used to link unwind data in .sframe sections.  */
+  /* Used to link stack trace info in .sframe sections.  */
   struct sframe_enc_info sfe_info;
 
   /* A linked list of local symbols to be added to .dynsym.  */

diff --git a/bfd/elf-sframe.c b/bfd/elf-sframe.c
index 8a7fd02193113623de37a8a9a5f6bd3583782609..d2954ba919355d96e2087169fafd3fe8ae0f79bb 100644 (file)
--- a/bfd/elf-sframe.c
+++ b/bfd/elf-sframe.c
@@ -206,7 +206,7 @@ _bfd_elf_parse_sframe (bfd *abfd,
       return false;
     }
 
-  /* Read the SFrame unwind information from abfd.  */
+  /* Read the SFrame stack trace information from abfd.  */
   if (!bfd_malloc_and_get_section (abfd, sec, &sfbuf))
     goto fail_no_free;
 
@@ -438,10 +438,11 @@ _bfd_elf_merge_section_sframe (bfd *abfd,
                }
              else
                {
-                 /* Expected to land here for SFrame unwind info as created
-                    for the .plt* sections.  These sections can have upto two
-                    FDE entries.  Although the code should work for > 2,
-                    leaving this assert here for safety.  */
+                 /* Expected to land here when SFrame stack trace info is
+                    created dynamically for the .plt* sections.  These
+                    sections are expected to have upto two SFrame FDE entries.
+                    Although the code should work for > 2,  leaving this
+                    assert here for safety.  */
                  BFD_ASSERT (num_fidx <= 2);
                  /* For the first entry, we know the offset of the SFrame FDE's
                     sfde_func_start_address.  Side note: see how the value

diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 914f82d015191ffa99f0796f9d01b4945165decf..5f89190a6a0bec6f40e8d0418f7bd795209b472b 100644 (file)
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -895,7 +895,7 @@ static const struct elf_x86_sframe_plt elf_x86_64_sframe_plt =
   { &elf_x86_64_sframe_pltn_fre1, &elf_x86_64_sframe_pltn_fre2 },
   NON_LAZY_PLT_ENTRY_SIZE,
   1, /* Number of FREs for PLTn for second PLT.  */
-  /* FREs for second plt ( unwind info for .plt.got is
+  /* FREs for second plt (stack trace info for .plt.got is
      identical).  Used when IBT or non-lazy PLT is in effect.  */
   { &elf_x86_64_sframe_sec_pltn_fre1 }
 };

diff --git a/bfd/elfxx-x86.c b/bfd/elfxx-x86.c
index 42af84b8e043aa8f7158a455240f2631e001447a..132fb791ac6dfc8fea481e8180f3e953d6b768e2 100644 (file)
--- a/bfd/elfxx-x86.c
+++ b/bfd/elfxx-x86.c
@@ -1804,7 +1804,7 @@ enum dynobj_sframe_plt_type
   SFRAME_PLT_SEC = 2
 };
 
-/* Create SFrame unwind info for the plt entries in the .plt section
+/* Create SFrame stack trace info for the plt entries in the .plt section
    of type PLT_SEC_TYPE.  */
 
 static bool
@@ -1819,7 +1819,7 @@ _bfd_x86_elf_create_sframe_plt (bfd *output_bfd,
   unsigned int plt0_entry_size;
   unsigned char func_info;
   unsigned int fre_type;
-  /* The dynamic plt section for which .sframe unwind information is being
+  /* The dynamic plt section for which .sframe stack trace information is being
      created.  */
   asection *dpltsec;
 
@@ -1832,7 +1832,7 @@ _bfd_x86_elf_create_sframe_plt (bfd *output_bfd,
 
   bed = get_elf_backend_data (output_bfd);
   htab = elf_x86_hash_table (info, bed->target_id);
-  /* Whether SFrame unwind info for plt0 is to be generated.  */
+  /* Whether SFrame stack trace info for plt0 is to be generated.  */
   plt0_generated_p = htab->plt.has_plt0;
   plt0_entry_size
     = (plt0_generated_p) ? htab->sframe_plt->plt0_entry_size : 0;
@@ -1906,7 +1906,7 @@ _bfd_x86_elf_create_sframe_plt (bfd *output_bfd,
       /* pltn entries use an SFrame FDE of type
         SFRAME_FDE_TYPE_PCMASK to exploit the repetitive
         pattern of the instructions in these entries.  Using this SFrame FDE
-        type helps in keeping the unwind information for pltn entries
+        type helps in keeping the SFrame stack trace info for pltn entries
         compact.  */
       func_info        = sframe_fde_create_func_info (fre_type,
                                               SFRAME_FDE_TYPE_PCMASK);

diff --git a/include/elf/common.h b/include/elf/common.h
index bb93123d14a6d3e78a2fcd58a91935c015ad0f49..d19d6f9927ddf67cf8e2e1ae71523dec541c12d5 100644 (file)
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -489,7 +489,7 @@
 #define PT_GNU_STACK   (PT_LOOS + 0x474e551) /* Stack flags */
 #define PT_GNU_RELRO   (PT_LOOS + 0x474e552) /* Read-only after relocation */
 #define PT_GNU_PROPERTY        (PT_LOOS + 0x474e553) /* GNU property */
-#define PT_GNU_SFRAME  (PT_LOOS + 0x474e554) /* SFrame unwind information */
+#define PT_GNU_SFRAME  (PT_LOOS + 0x474e554) /* SFrame stack trace information */
 
 /* OpenBSD segment types.  */
 #define PT_OPENBSD_RANDOMIZE (PT_LOOS + 0x5a3dbe6)  /* Fill with random data.  */