[AArch64, ILP32] 2/6 Parametrize elfnn-aarch64.c and add basic suppor…

…t in ld

and gas.

bfd/

	* Makefile.am (BFD64_BACKENDS): Add elf32-aarch64.lo.
	(BUILD_CFILES): Add elf32-aarch64.c.
	(elf32-aarch64.c): New rule for generating from elfnn-aarch64.c.
	* Makefile.in: Re-generated.
	* archures.c (bfd_mach_aarch64_ilp32): New define.
	* bfd-in.h (bfd_elf32_aarch64_init_maps): New declaration.
	(bfd_elf32_aarch64_set_options): Ditto.
	(elf32_aarch64_setup_section_lists): Ditto.
	(elf32_aarch64_next_input_section): Ditto.
	(elf32_aarch64_size_stubs): Ditto.
	(elf32_aarch64_build_stubs): Ditto.
	* bfd-in2.h: Re-generated.
	* config.bfd (aarch64-*-elf): Add bfd_elf32_littleaarch64_vec
	and bfd_elf32_bigaarch64_vec.
	(aarch64-*-linux*): Likewise.
	(aarch64_be-*-elf): Likewise.
	(aarch64_be-*-linux*): Likewise.
	* configure.in (bfd_elf32_bigaarch64_vec)
	(bfd_elf32_littleaarch64_vec): New.
	* configure: Re-generated.
	* cpu-aarch64.c (compatible): Don't allow mixing ilp32 objects with
	lp64 ones.
	(bfd_aarch64_arch_ilp32): New.
	(bfd_aarch64_arch): Link to bfd_aarch64_arch_ilp32.
	* elfnn-aarch64.c (ARCH_SIZE): New define.
	(AARCH64_R, AARCH64_R_STR, LOG_FILE_ALIGN): New defines.
	(GOT_ENTRY_SIZE): Re-define as (ARCH_SIZE / 8).
	(elf64_aarch64_*): Rename to elfNN_aarch64_*.
	(ELF64_R_*): Rename to ELFNN_R_*.
	Plus other paramaterization.
	* targets.c (bfd_elf32_bigaarch64_vec, bfd_elf32_littleaarch64_vec):
	New declarations.
	(_bfd_target_vector): Add bfd_elf32_bigaarch64_vec and
	bfd_elf32_littleaarch64_vec.

gas/

	* config/tc-aarch64.c (ilp32_p): New static variable.
	(elf64_aarch64_target_format): Return the target according to the
	value of 'ilp32_p'.
	(md_begin): Determine 'mach' according to the value of 'ilp32_p'.
	(aarch64_opts): Add support for options '-milp32' and '-mlp64'.
	(aarch64_dwarf2_addr_size): New function.
	* config/tc-aarch64.h (aarch64_dwarf2_addr_size): New declaration.
	(DWARF2_ADDR_SIZE): New define.

ld/

	* Makefile.am (ALL_64_EMULATION_SOURCES): Add eaarch64elf32.c.
	(eaarch64elf32.c): New dependency and rule.
	* Makefile.in: Re-generated.
	* configure.tgt (aarch64-*-elf): Add aarch64elf32.
	(aarch64_be-*-elf, aarch64_be-*-linux*, aarch64-*-linux*): Likewise.
	* emulparams/aarch64elf32.sh: New file.

bfd/ChangeLog

@@ -1,3 +1,40 @@
+2013-06-26  Yufeng Zhang  <yufeng.zhang@arm.com>
+
+	* Makefile.am (BFD64_BACKENDS): Add elf32-aarch64.lo.
+	(BUILD_CFILES): Add elf32-aarch64.c.
+	(elf32-aarch64.c): New rule for generating from elfnn-aarch64.c.
+	* Makefile.in: Re-generated.
+	* archures.c (bfd_mach_aarch64_ilp32): New define.
+	* bfd-in.h (bfd_elf32_aarch64_init_maps): New declaration.
+	(bfd_elf32_aarch64_set_options): Ditto.
+	(elf32_aarch64_setup_section_lists): Ditto.
+	(elf32_aarch64_next_input_section): Ditto.
+	(elf32_aarch64_size_stubs): Ditto.
+	(elf32_aarch64_build_stubs): Ditto.
+	* bfd-in2.h: Re-generated.
+	* config.bfd (aarch64-*-elf): Add bfd_elf32_littleaarch64_vec
+	and bfd_elf32_bigaarch64_vec.
+	(aarch64-*-linux*): Likewise.
+	(aarch64_be-*-elf): Likewise.
+	(aarch64_be-*-linux*): Likewise.
+	* configure.in (bfd_elf32_bigaarch64_vec)
+	(bfd_elf32_littleaarch64_vec): New.
+	* configure: Re-generated.
+	* cpu-aarch64.c (compatible): Don't allow mixing ilp32 objects with
+	lp64 ones.
+	(bfd_aarch64_arch_ilp32): New.
+	(bfd_aarch64_arch): Link to bfd_aarch64_arch_ilp32.
+	* elfnn-aarch64.c (ARCH_SIZE): New define.
+	(AARCH64_R, AARCH64_R_STR, LOG_FILE_ALIGN): New defines.
+	(GOT_ENTRY_SIZE): Re-define as (ARCH_SIZE / 8).
+	(elf64_aarch64_*): Rename to elfNN_aarch64_*.
+	(ELF64_R_*): Rename to ELFNN_R_*.
+	Plus other paramaterization.
+	* targets.c (bfd_elf32_bigaarch64_vec, bfd_elf32_littleaarch64_vec):
+	New declarations.
+	(_bfd_target_vector): Add bfd_elf32_bigaarch64_vec and
+	bfd_elf32_littleaarch64_vec.
+
 2013-06-26  Yufeng Zhang  <yufeng.zhang@arm.com>
 
 	* Makefile.am (BFD64_BACKENDS_CFILES): Remove elf64-aarch64.c.

bfd/Makefile.am

@@ -638,6 +638,7 @@ BFD32_BACKENDS_CFILES = \
 # elf32-ia64.c requires a 64-bit bfd_vma, and hence can not be put in
 # BFD32_BACKENDS.
 BFD64_BACKENDS = \
+	elf32-aarch64.lo \
 	elf64-aarch64.lo \
 	aix5ppc-core.lo \
 	aout64.lo \
@@ -763,7 +764,7 @@ SOURCE_CFILES = \
 	$(OPTIONAL_BACKENDS_CFILES)
 
 BUILD_CFILES = \
-	elf64-aarch64.c \
+	elf32-aarch64.c elf64-aarch64.c \
 	elf32-ia64.c elf64-ia64.c peigen.c pepigen.c pex64igen.c
 
 CFILES = $(SOURCE_CFILES) $(BUILD_CFILES)
@@ -912,6 +913,11 @@ elf64-target.h : elfxx-target.h
 	sed -e s/NN/64/g < $(srcdir)/elfxx-target.h > elf64-target.new
 	mv -f elf64-target.new elf64-target.h
 
+elf32-aarch64.c : elfnn-aarch64.c
+	rm -f elf32-aarch64.c
+	sed -e s/NN/32/g < $(srcdir)/elfnn-aarch64.c > elf32-aarch64.new
+	mv -f elf32-aarch64.new elf32-aarch64.c
+
 elf64-aarch64.c : elfnn-aarch64.c
 	rm -f elf64-aarch64.c
 	sed -e s/NN/64/g < $(srcdir)/elfnn-aarch64.c > elf64-aarch64.new

bfd/Makefile.in

@@ -941,6 +941,7 @@ BFD32_BACKENDS_CFILES = \
 # elf32-ia64.c requires a 64-bit bfd_vma, and hence can not be put in
 # BFD32_BACKENDS.
 BFD64_BACKENDS = \
+	elf32-aarch64.lo \
 	elf64-aarch64.lo \
 	aix5ppc-core.lo \
 	aout64.lo \
@@ -1068,7 +1069,7 @@ SOURCE_CFILES = \
 	$(OPTIONAL_BACKENDS_CFILES)
 
 BUILD_CFILES = \
-	elf64-aarch64.c \
+	elf32-aarch64.c elf64-aarch64.c \
 	elf32-ia64.c elf64-ia64.c peigen.c pepigen.c pex64igen.c
 
 CFILES = $(SOURCE_CFILES) $(BUILD_CFILES)
@@ -1397,6 +1398,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf-strtab.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf-vxworks.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-aarch64.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-am33lin.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-arc.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-arm.Plo@am__quote@
@@ -1989,6 +1991,11 @@ elf64-target.h : elfxx-target.h
 	sed -e s/NN/64/g < $(srcdir)/elfxx-target.h > elf64-target.new
 	mv -f elf64-target.new elf64-target.h
 
+elf32-aarch64.c : elfnn-aarch64.c
+	rm -f elf32-aarch64.c
+	sed -e s/NN/32/g < $(srcdir)/elfnn-aarch64.c > elf32-aarch64.new
+	mv -f elf32-aarch64.new elf32-aarch64.c
+
 elf64-aarch64.c : elfnn-aarch64.c
 	rm -f elf64-aarch64.c
 	sed -e s/NN/64/g < $(srcdir)/elfnn-aarch64.c > elf64-aarch64.new

bfd/archures.c

@@ -475,6 +475,7 @@ DESCRIPTION
 .#define bfd_mach_tilegx32  2
 .  bfd_arch_aarch64,   {* AArch64  *}
 .#define bfd_mach_aarch64 0
+.#define bfd_mach_aarch64_ilp32	32
 .  bfd_arch_nios2,
 .#define bfd_mach_nios2	0
 .  bfd_arch_last

bfd/bfd-in.h

@@ -933,9 +933,15 @@ extern unsigned int _bfd_elf_ppc_at_tprel_transform
 extern void bfd_elf64_aarch64_init_maps
   (bfd *);
 
+extern void bfd_elf32_aarch64_init_maps
+  (bfd *);
+
 extern void bfd_elf64_aarch64_set_options
   (bfd *, struct bfd_link_info *, int, int, int);
 
+extern void bfd_elf32_aarch64_set_options
+  (bfd *, struct bfd_link_info *, int, int, int);
+
 /* ELF AArch64 mapping symbol support.  */
 #define BFD_AARCH64_SPECIAL_SYM_TYPE_MAP	(1 << 0)
 #define BFD_AARCH64_SPECIAL_SYM_TYPE_TAG	(1 << 1)
@@ -944,7 +950,7 @@ extern void bfd_elf64_aarch64_set_options
 extern bfd_boolean bfd_is_aarch64_special_symbol_name
   (const char * name, int type);
 
-/* AArch64 stub generation support.  Called from the linker.  */
+/* AArch64 stub generation support for ELF64.  Called from the linker.  */
 extern int elf64_aarch64_setup_section_lists
   (bfd *, struct bfd_link_info *);
 extern void elf64_aarch64_next_input_section
@@ -955,6 +961,18 @@ extern bfd_boolean elf64_aarch64_size_stubs
    void (*) (void));
 extern bfd_boolean elf64_aarch64_build_stubs
   (struct bfd_link_info *);
+/* AArch64 stub generation support for ELF32.  Called from the linker.  */
+extern int elf32_aarch64_setup_section_lists
+  (bfd *, struct bfd_link_info *);
+extern void elf32_aarch64_next_input_section
+  (struct bfd_link_info *, struct bfd_section *);
+extern bfd_boolean elf32_aarch64_size_stubs
+  (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma,
+   struct bfd_section * (*) (const char *, struct bfd_section *),
+   void (*) (void));
+extern bfd_boolean elf32_aarch64_build_stubs
+  (struct bfd_link_info *);
+
 
 /* TI COFF load page support.  */
 extern void bfd_ticoff_set_section_load_page

bfd/bfd-in2.h

@@ -940,9 +940,15 @@ extern unsigned int _bfd_elf_ppc_at_tprel_transform
 extern void bfd_elf64_aarch64_init_maps
   (bfd *);
 
+extern void bfd_elf32_aarch64_init_maps
+  (bfd *);
+
 extern void bfd_elf64_aarch64_set_options
   (bfd *, struct bfd_link_info *, int, int, int);
 
+extern void bfd_elf32_aarch64_set_options
+  (bfd *, struct bfd_link_info *, int, int, int);
+
 /* ELF AArch64 mapping symbol support.  */
 #define BFD_AARCH64_SPECIAL_SYM_TYPE_MAP	(1 << 0)
 #define BFD_AARCH64_SPECIAL_SYM_TYPE_TAG	(1 << 1)
@@ -951,7 +957,7 @@ extern void bfd_elf64_aarch64_set_options
 extern bfd_boolean bfd_is_aarch64_special_symbol_name
   (const char * name, int type);
 
-/* AArch64 stub generation support.  Called from the linker.  */
+/* AArch64 stub generation support for ELF64.  Called from the linker.  */
 extern int elf64_aarch64_setup_section_lists
   (bfd *, struct bfd_link_info *);
 extern void elf64_aarch64_next_input_section
@@ -962,6 +968,18 @@ extern bfd_boolean elf64_aarch64_size_stubs
    void (*) (void));
 extern bfd_boolean elf64_aarch64_build_stubs
   (struct bfd_link_info *);
+/* AArch64 stub generation support for ELF32.  Called from the linker.  */
+extern int elf32_aarch64_setup_section_lists
+  (bfd *, struct bfd_link_info *);
+extern void elf32_aarch64_next_input_section
+  (struct bfd_link_info *, struct bfd_section *);
+extern bfd_boolean elf32_aarch64_size_stubs
+  (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma,
+   struct bfd_section * (*) (const char *, struct bfd_section *),
+   void (*) (void));
+extern bfd_boolean elf32_aarch64_build_stubs
+  (struct bfd_link_info *);
+
 
 /* TI COFF load page support.  */
 extern void bfd_ticoff_set_section_load_page
@@ -2214,6 +2232,7 @@ enum bfd_architecture
 #define bfd_mach_tilegx32  2
   bfd_arch_aarch64,   /* AArch64  */
 #define bfd_mach_aarch64 0
+#define bfd_mach_aarch64_ilp32 32
   bfd_arch_nios2,
 #define bfd_mach_nios2 0
   bfd_arch_last

bfd/config.bfd

@@ -164,22 +164,22 @@ case "${targ}" in
 #ifdef BFD64
   aarch64-*-elf)
     targ_defvec=bfd_elf64_littleaarch64_vec
-    targ_selvecs="bfd_elf64_bigaarch64_vec bfd_elf32_littlearm_vec bfd_elf32_bigarm_vec"
+    targ_selvecs="bfd_elf64_bigaarch64_vec bfd_elf32_littleaarch64_vec bfd_elf32_bigaarch64_vec bfd_elf32_littlearm_vec bfd_elf32_bigarm_vec"
     want64=true
     ;;
   aarch64_be-*-elf)
     targ_defvec=bfd_elf64_bigaarch64_vec
-    targ_selvecs="bfd_elf64_littleaarch64_vec bfd_elf32_bigarm_vec bfd_elf32_littlearm_vec"
+    targ_selvecs="bfd_elf64_littleaarch64_vec bfd_elf32_littleaarch64_vec bfd_elf32_bigaarch64_vec bfd_elf32_bigarm_vec bfd_elf32_littlearm_vec"
     want64=true
     ;;
   aarch64-*-linux*)
     targ_defvec=bfd_elf64_littleaarch64_vec
-    targ_selvecs="bfd_elf64_bigaarch64_vec bfd_elf32_littlearm_vec bfd_elf32_bigarm_vec"
+    targ_selvecs="bfd_elf64_bigaarch64_vec bfd_elf32_littleaarch64_vec bfd_elf32_bigaarch64_vec bfd_elf32_littlearm_vec bfd_elf32_bigarm_vec"
     want64=true
     ;;
   aarch64_be-*-linux*)
     targ_defvec=bfd_elf64_bigaarch64_vec
-    targ_selvecs="bfd_elf64_littleaarch64_vec bfd_elf32_bigarm_vec bfd_elf32_littlearm_vec"
+    targ_selvecs="bfd_elf64_littleaarch64_vec bfd_elf32_littleaarch64_vec bfd_elf32_bigaarch64_vec bfd_elf32_bigarm_vec bfd_elf32_littlearm_vec"
     want64=true
     ;;
   alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu)

bfd/configure

@@ -15365,6 +15365,7 @@ do
     bfd_elf64_alpha_freebsd_vec) tb="$tb elf64-alpha.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_alpha_vec)	tb="$tb elf64-alpha.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_bigaarch64_vec)	tb="$tb elf64-aarch64.lo elf64.lo $elf"; target_size=64 ;;
+    bfd_elf32_bigaarch64_vec)	tb="$tb elf32-aarch64.lo elf32.lo $elf"; target_size=64 ;;
     bfd_elf64_big_generic_vec) 	tb="$tb elf64-gen.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_bigmips_vec) 	tb="$tb elf64-mips.lo elf64.lo elfxx-mips.lo elf-vxworks.lo elf32.lo $elf ecofflink.lo"; target_size=64 ;;
     bfd_elf64_hppa_linux_vec)	tb="$tb elf64-hppa.lo elf64.lo $elf"; target_size=64 ;;
@@ -15374,6 +15375,7 @@ do
     bfd_elf64_ia64_little_vec)	tb="$tb elf64-ia64.lo elfxx-ia64.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_ia64_vms_vec)	tb="$tb elf64-ia64-vms.lo elf64-ia64.lo elfxx-ia64.lo elf64.lo vms-lib.lo vms-misc.lo $elf"; target_size=64 ;;
     bfd_elf64_littleaarch64_vec)tb="$tb elf64-aarch64.lo elf64.lo $elf"; target_size=64 ;;
+    bfd_elf32_littleaarch64_vec)tb="$tb elf32-aarch64.lo elf32.lo $elf"; target_size=64 ;;
     bfd_elf64_little_generic_vec) tb="$tb elf64-gen.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_littlemips_vec) 	tb="$tb elf64-mips.lo elf64.lo elfxx-mips.lo elf-vxworks.lo elf32.lo $elf ecofflink.lo"; target_size=64 ;;
     bfd_elf64_mmix_vec) 	tb="$tb elf64-mmix.lo elf64.lo $elf" target_size=64 ;;

bfd/configure.in

@@ -860,6 +860,7 @@ do
     bfd_elf64_alpha_freebsd_vec) tb="$tb elf64-alpha.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_alpha_vec)	tb="$tb elf64-alpha.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_bigaarch64_vec)	tb="$tb elf64-aarch64.lo elf64.lo $elf"; target_size=64 ;;
+    bfd_elf32_bigaarch64_vec)	tb="$tb elf32-aarch64.lo elf32.lo $elf"; target_size=64 ;;
     bfd_elf64_big_generic_vec) 	tb="$tb elf64-gen.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_bigmips_vec) 	tb="$tb elf64-mips.lo elf64.lo elfxx-mips.lo elf-vxworks.lo elf32.lo $elf ecofflink.lo"; target_size=64 ;;
     bfd_elf64_hppa_linux_vec)	tb="$tb elf64-hppa.lo elf64.lo $elf"; target_size=64 ;;
@@ -869,6 +870,7 @@ do
     bfd_elf64_ia64_little_vec)	tb="$tb elf64-ia64.lo elfxx-ia64.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_ia64_vms_vec)	tb="$tb elf64-ia64-vms.lo elf64-ia64.lo elfxx-ia64.lo elf64.lo vms-lib.lo vms-misc.lo $elf"; target_size=64 ;;    
     bfd_elf64_littleaarch64_vec)tb="$tb elf64-aarch64.lo elf64.lo $elf"; target_size=64 ;;
+    bfd_elf32_littleaarch64_vec)tb="$tb elf32-aarch64.lo elf32.lo $elf"; target_size=64 ;;
     bfd_elf64_little_generic_vec) tb="$tb elf64-gen.lo elf64.lo $elf"; target_size=64 ;;
     bfd_elf64_littlemips_vec) 	tb="$tb elf64-mips.lo elf64.lo elfxx-mips.lo elf-vxworks.lo elf32.lo $elf ecofflink.lo"; target_size=64 ;;
     bfd_elf64_mmix_vec) 	tb="$tb elf64-mmix.lo elf64.lo $elf" target_size=64 ;;

bfd/cpu-aarch64.c

@@ -38,6 +38,10 @@ compatible (const bfd_arch_info_type * a, const bfd_arch_info_type * b)
   if (a->mach == b->mach)
     return a;
 
+  /* Don't allow mixing ilp32 with lp64.  */
+  if ((a->mach & bfd_mach_aarch64_ilp32) != (b->mach & bfd_mach_aarch64_ilp32))
+    return NULL;
+
   /* Otherwise if either a or b is the 'default' machine
      then it can be polymorphed into the other.  */
   if (a->the_default)
@@ -101,9 +105,11 @@ scan (const struct bfd_arch_info *info, const char *string)
     "aarch64", PRINT, 4, DEFAULT, compatible, scan,		\
     bfd_arch_default_fill, NEXT }
 
-const bfd_arch_info_type bfd_aarch64_arch =
-  N (0, "aarch64", TRUE, NULL);
+static const bfd_arch_info_type bfd_aarch64_arch_ilp32 =
+  N (bfd_mach_aarch64_ilp32, "aarch64:ilp32", FALSE, NULL);
 
+const bfd_arch_info_type bfd_aarch64_arch =
+  N (0, "aarch64", TRUE, &bfd_aarch64_arch_ilp32);
 
 bfd_boolean
 bfd_is_aarch64_special_symbol_name (const char *name, int type)