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

1 files changed, 20 insertions, 1 deletions

diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index a20abc0af7..e4a5dccf8e 100644
--- a/bfd/bfd-in2.h
+++ b/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