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authorFangrui Song <maskray@google.com>2022-04-26 09:26:22 -0700
committerFangrui Song <maskray@google.com>2022-04-26 09:26:22 -0700
commit098a657fe449a217cf65c5270d5fbc8d40b5b4e6 (patch)
tree3721fb17b7746c4dfbe411439f84699f7e6c17a3 /sysdeps/sh
parente465d97653311c3687aee49de782177353acfe86 (diff)
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elf: Replace PI_STATIC_AND_HIDDEN with opposite HIDDEN_VAR_NEEDS_DYNAMIC_RELOC
PI_STATIC_AND_HIDDEN indicates whether accesses to internal linkage
variables and hidden visibility variables in a shared object (ld.so)
need dynamic relocations (usually R_*_RELATIVE). PI (position
independent) in the macro name is a misnomer: a code sequence using GOT
is typically position-independent as well, but using dynamic relocations
does not meet the requirement.

Not defining PI_STATIC_AND_HIDDEN is legacy and we expect that all new
ports will define PI_STATIC_AND_HIDDEN. Current ports defining
PI_STATIC_AND_HIDDEN are more than the opposite. Change the configure
default.

No functional change.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/sh')
-rw-r--r--sysdeps/sh/configure3
-rw-r--r--sysdeps/sh/configure.ac4
2 files changed, 0 insertions, 7 deletions
diff --git a/sysdeps/sh/configure b/sysdeps/sh/configure
index 110eb65b06..3c05bb6b5e 100644
--- a/sysdeps/sh/configure
+++ b/sysdeps/sh/configure
@@ -1,5 +1,2 @@
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
  # Local configure fragment for sysdeps/sh.
-
-$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
-
diff --git a/sysdeps/sh/configure.ac b/sysdeps/sh/configure.ac
index 21400c447d..28d9e9a438 100644
--- a/sysdeps/sh/configure.ac
+++ b/sysdeps/sh/configure.ac
@@ -1,6 +1,2 @@
 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 # Local configure fragment for sysdeps/sh.
-
-dnl It is always possible to access static and hidden symbols in an
-dnl position independent way.
-AC_DEFINE(PI_STATIC_AND_HIDDEN)