Fix libgcc build failure on FRV

Fix libgcc build failure on FRV

[Jeff Law]

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Alan recently changed the diagnostic in binutils for changing various
attributes of a section from a warning to a hard error.


This caused the FRV port to fail to build frvbegin/frvend because of
differences in the flags for the .ctors/.dtors sections.

This patch twiddles frvbegin.c/frvend.c in libgcc to avoid the error.

I've verified this fixes the libgcc build failure for FRV and verified
that the GCC testresults have returned to normal.

Installed on the trunk,

Jeff

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commit 7214fce3024d726ad548d7003fa162eb5021c491
Author: Jeff Law <law@redhat.com>
Date:   Mon Feb 10 14:12:32 2020 -0700

    Fix libgcc build failure for FRV with recent versions of gas.
    
            * config/frv/frvbegin.c: Use right flags for .ctors and .dtors
            sections.
            * config/frv/frvend.c: Similarly.

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 4c7443a0457..917d0e76568 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,9 @@
+2020-02-10  Jeff Law  <law@redhat.com>
+
+	* config/frv/frvbegin.c: Use right flags for .ctors and .dtors
+	sections.
+	* config/frv/frvend.c: Similarly.
+
 2020-02-10  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR libgcc/85334
diff --git a/libgcc/config/frv/frvbegin.c b/libgcc/config/frv/frvbegin.c
index 8ab1a1b989d..0f54bf19646 100644
--- a/libgcc/config/frv/frvbegin.c
+++ b/libgcc/config/frv/frvbegin.c
@@ -59,8 +59,8 @@ __asm__ (".section " SECTION "," FLAGS "\n\t"				\
 /* Beginning of .ctor/.dtor sections that provides a list of constructors and
    destructors to run.  */
 
-INIT_SECTION_NEG_ONE (".ctors", "\"aw\"", "__CTOR_LIST__");
-INIT_SECTION_NEG_ONE (".dtors", "\"aw\"", "__DTOR_LIST__");
+INIT_SECTION_NEG_ONE (".ctors", "\"a\"", "__CTOR_LIST__");
+INIT_SECTION_NEG_ONE (".dtors", "\"a\"", "__DTOR_LIST__");
 
 /* Beginning of .eh_frame section that provides all of the exception handling
    tables.  */
diff --git a/libgcc/config/frv/frvend.c b/libgcc/config/frv/frvend.c
index eb3494cad96..d2b83b294ca 100644
--- a/libgcc/config/frv/frvend.c
+++ b/libgcc/config/frv/frvend.c
@@ -52,8 +52,8 @@ __asm__ (".section " SECTION "," FLAGS "\n\t"				\
 /* End of .ctor/.dtor sections that provides a list of constructors and
    destructors to run.  */
 
-FINI_SECTION_ZERO (".ctors", "\"aw\"", "__CTOR_END__");
-FINI_SECTION_ZERO (".dtors", "\"aw\"", "__DTOR_END__");
+FINI_SECTION_ZERO (".ctors", "\"a\"", "__CTOR_END__");
+FINI_SECTION_ZERO (".dtors", "\"a\"", "__DTOR_END__");
 
 /* End of .eh_frame section that provides all of the exception handling
    tables.  */