include/coff/

	* internal.h (C_AIX_WEAKEXT): New macro.
	(C_WEAKEXT): Use the GNU definition in the generic part of the file,
	and conditionally reset it to C_AIX_WEAKEXT in the XCOFF part of
	the file.
	(CSECT_SYM_P): New macro.
	* xcoff.h (L_WEAK): Define.
	(EXTERN_SYM_P): New macro.

bfd/
	* coffcode.h (coff_pointerize_aux_hook): Update CSECT_SYM_P to
	check whether a symbol has csect information.
	(coff_print_aux): Likewise.
	* coff-rs6000.c (_bfd_xcoff_swap_aux_in): Handle auxillary csect
	information for C_AIX_WEAKEXT too.
	(_bfd_xcoff_swap_aux_out): Likewise.
	(xcoff_reloc_type_br): Handle defweak symbols too.
	* coff64-rs6000.c (_bfd_xcoff64_swap_aux_in): Handle auxillary csect
	information for C_AIX_WEAKEXT too.
	(_bfd_xcoff64_swap_aux_out): Likewise.
	(xcoff64_reloc_type_br): Handle defweak symbols too.
	* coffgen.c (coff_print_symbol): Handle auxillary function
	information for C_AIX_WEAKEXT too.
	* xcofflink.c (_bfd_xcoff_canonicalize_dynamic_symtab): Set BSF_WEAK
	instead of BSF_GLOBAL if the L_WEAK flag is set.
	(xcoff_dynamic_definition_p): New function.
	(xcoff_link_add_dynamic_symbols): Use it to decide whether ldsym
	defines h.  Don't change h if ldsym isn't the definition.  Otherwise,
	always take the symbol class from the ldsym.  Use weak bfd symbol
	types for weak ldsyms.
	(xcoff_link_add_symbols): Use CSECT_SYM_P and EXTERN_SYM_P.
	Fix the check for whether a definition is from a shared object.
	Allow redefinitions of weak symbols.
	(xcoff_link_check_ar_symbols): Use EXTERN_SYM_P.
	(xcoff_keep_symbol_p): Likewise.
	(bfd_xcoff_size_dynamic_sections): Use CSECT_SYM_P.
	(xcoff_link_input_bfd): Use CSECT_SYM_P and EXTERN_SYM_P.
	Add .loader entries for C_AIX_WEAKEXT as well as C_EXT symbols,
	but mark them as L_WEAK.
	(xcoff_write_global_symbol): Treat weak symbols as C_AIX_WEAKEXT
	instead of C_EXT if C_AIX_WEAKEXT == C_WEAKEXT.

gas/
	* config/tc-ppc.c (ppc_frob_symbol): Add csect information for
	C_AIX_WEAKEXT too.

ld/testsuite/
	* ld-powerpc/aix-glink-2a.s, ld-powerpc/aix-glink-2a.ex,
	ld-powerpc/aix-glink-2b.s, ld-powerpc/aix-glink-2c.s,
	ld-powerpc/aix-glink-2c.ex, ld-powerpc/aix-glink-2d.s,
	ld-powerpc/aix-glink-2-32.dd, ld-powerpc/aix-glink-2-64.dd,
	ld-powerpc/aix-weak-1a.s, ld-powerpc/aix-weak-1b.s,
	ld-powerpc/aix-weak-1-rel.hd, ld-powerpc/aix-weak-1-rel.nd,
	ld-powerpc/aix-weak-1-dso.hd, ld-powerpc/aix-weak-1-dso.nd,
	ld-powerpc/aix-weak-1-dso.dnd, ld-powerpc/aix-weak-1.ex,
	ld-powerpc/aix-weak-2a.s, ld-powerpc/aix-weak-2a.ex,
	ld-powerpc/aix-weak-2a.nd, ld-powerpc/aix-weak-2b.s,
	ld-powerpc/aix-weak-2b.nd, ld-powerpc/aix-weak-2c.s,
	ld-powerpc/aix-weak-2c.ex, ld-powerpc/aix-weak-2c.nd,
	ld-powerpc/aix-weak-2c.od, ld-powerpc/aix-weak-3a.s,
	ld-powerpc/aix-weak-3a.ex, ld-powerpc/aix-weak-3b.s,
	ld-powerpc/aix-weak-3b.ex, ld-powerpc/aix-weak-3-32.d,
	ld-powerpc/aix-weak-3-32.dd, ld-powerpc/aix-weak-3-64.d,
	ld-powerpc/aix-weak-3-64.dd: New tests.
	* ld-powerpc/aix52.exp: Run them.  Replace tmp/aix-* with
	tmp/aix64-* in 64-bit ld options.

1 files changed, 24 insertions, 0 deletions

diff --git a/ld/testsuite/ld-powerpc/aix-weak-1b.s b/ld/testsuite/ld-powerpc/aix-weak-1b.s
new file mode 100644
index 0000000..e6c2429
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/aix-weak-1b.s
@@ -0,0 +1,24 @@
+	.globl	a
+	.csect	a[RW],2
+a:
+	.long	0x55555555
+	.weak	b
+	.csect	b[RW],2
+b:
+	.long	0x66666666
+	.comm	c,4
+	.comm	d,4
+
+	# Same again, with weak common symbols
+	.globl	e
+	.csect	e[RW],2
+e:
+	.long	0x77777777
+	.weak	f
+	.csect	f[RW],2
+f:
+	.long	0x88888888
+	.weak	g
+	.comm	g,4
+	.weak	h
+	.comm	h,4