forked from pool/emacs
469fc35a73
set of 10 patches to avoid emacs build error for ppc64le arch with new binutils 2.28 as per comments in https://build.opensuse.org/request/show/356500 OBS-URL: https://build.opensuse.org/request/show/357463 OBS-URL: https://build.opensuse.org/package/show/editors/emacs?expand=0&rev=189
71 lines
2.4 KiB
Diff
71 lines
2.4 KiB
Diff
From af11708e83ab826202593ab1b9c22601c46a5056 Mon Sep 17 00:00:00 2001
|
|
From: Alan Modra <amodra@gmail.com>
|
|
Date: Sun, 8 Nov 2015 09:29:00 -0800
|
|
Subject: ELF unexec: _OBJC_ symbols in bss sections
|
|
|
|
Emacs should build on ppc64el. A problem with the bss has been fixed.
|
|
|
|
This upstream patch has been added [5/10]:
|
|
|
|
ELF unexec: _OBJC_ symbols in bss sections
|
|
|
|
This code assumed that there was only one bss section. Rather than
|
|
checking for a particular index, check the section type. Also, handle
|
|
the possibility that the section was SHT_NOBITS originally and is
|
|
unchanged, in which case no clearing is needed (and sh_offset isn't
|
|
necessarily valid, which can lead to a wild memset).
|
|
|
|
* unexelf.c (unexec): Properly handle _OBJC_ symbols in bss sections.
|
|
|
|
Origin: upstream, commit: 3ff9fc0e8d738be5004c65c3be314af9aca68148
|
|
Bug: http://debbugs.gnu.org/20614
|
|
Bug-Debian: http://bugs.debian.org/808347
|
|
Added-by: Rob Browning <rlb@defaultvalue.org>
|
|
---
|
|
src/unexelf.c | 31 ++++++++++++++++++-------------
|
|
1 file changed, 18 insertions(+), 13 deletions(-)
|
|
|
|
diff --git a/src/unexelf.c b/src/unexelf.c
|
|
index 010ecd3..58f0ad0 100644
|
|
--- a/src/unexelf.c
|
|
+++ b/src/unexelf.c
|
|
@@ -1177,20 +1177,25 @@ temacs:
|
|
"_OBJC_", sizeof ("_OBJC_") - 1) == 0)
|
|
{
|
|
ElfW (Shdr) *new_shdr = &NEW_SECTION_H (symp->st_shndx);
|
|
- ptrdiff_t reladdr = symp->st_value - new_shdr->sh_addr;
|
|
- ptrdiff_t newoff = reladdr + new_shdr->sh_offset;
|
|
-
|
|
- /* "Unpatch" index. */
|
|
- nn = symp->st_shndx;
|
|
- if (nn > old_bss_index)
|
|
- nn--;
|
|
- if (nn == old_bss_index)
|
|
- memset (new_base + newoff, 0, symp->st_size);
|
|
- else
|
|
+ if (new_shdr->sh_type != SHT_NOBITS)
|
|
{
|
|
- ElfW (Shdr) *old_shdr = &OLD_SECTION_H (nn);
|
|
- ptrdiff_t oldoff = reladdr + old_shdr->sh_offset;
|
|
- memcpy (new_base + newoff, old_base + oldoff, symp->st_size);
|
|
+ ElfW (Shdr) *old_shdr;
|
|
+ ptrdiff_t reladdr = symp->st_value - new_shdr->sh_addr;
|
|
+ ptrdiff_t newoff = reladdr + new_shdr->sh_offset;
|
|
+
|
|
+ /* "Unpatch" index. */
|
|
+ nn = symp->st_shndx;
|
|
+ if (nn > old_bss_index)
|
|
+ nn--;
|
|
+ old_shdr = &OLD_SECTION_H (nn);
|
|
+ if (old_shdr->sh_type == SHT_NOBITS)
|
|
+ memset (new_base + newoff, 0, symp->st_size);
|
|
+ else
|
|
+ {
|
|
+ ptrdiff_t oldoff = reladdr + old_shdr->sh_offset;
|
|
+ memcpy (new_base + newoff, old_base + oldoff,
|
|
+ symp->st_size);
|
|
+ }
|
|
}
|
|
}
|
|
#endif
|