This patch adds the basic infrastructure needed to support Armv8-R in
AArch64 binutils: new command-line flags, new feature bits, a new BFD
architecture, and support for differentiating between architecture
variants in the disassembler.
The new command-line options added by this patch are -march=armv8-r in
GAS and -m aarch64:armv8-r in objdump.
The disassembler support is necessary since Armv8-R AArch64 introduces a
system register (VSCTLR_EL2) which shares an encoding with a different
system register (TTBR0_EL2) in Armv8-A. This also allows us to use the
correct preferred disassembly for the new DFB alias introduced in
Armv8-R.
bfd/ChangeLog:
2020-09-08 Alex Coplan <alex.coplan@arm.com>
* archures.c (bfd_mach_aarch64_8R): New.
* bfd-in2.h: Regenerate.
* cpu-aarch64.c (bfd_aarch64_arch_v8_r): New.
(bfd_aarch64_arch_ilp32): Update tail pointer.
gas/ChangeLog:
2020-09-08 Alex Coplan <alex.coplan@arm.com>
* config/tc-aarch64.c (aarch64_archs): Add armv8-r.
* doc/c-aarch64.texi: Document -march=armv8-r.
include/ChangeLog:
2020-09-08 Alex Coplan <alex.coplan@arm.com>
* opcode/aarch64.h (AARCH64_FEATURE_V8_A): New.
(AARCH64_FEATURE_V8_R): New.
(AARCH64_ARCH_V8): Include new A-profile feature bit.
(AARCH64_ARCH_V8_R): New.
opcodes/ChangeLog:
2020-09-08 Alex Coplan <alex.coplan@arm.com>
* aarch64-dis.c (arch_variant): New.
(determine_disassembling_preference): Disassemble according to
arch variant.
(select_aarch64_variant): New.
(print_insn_aarch64): Set feature set.
Related specifications can be found at
https://developer.arm.com/ip-products/processors.
gas * NEWS: Mention the Arm and AArch64 new processors.
* config/tc-aarch64.c: New entries for Cortex-A34, Cortex-A65,
Cortex-A77, cortex-A65AE, and Cortex-A76AE.
* doc/c-aarch64.texi: Document new CPUs.
* testsuite/gas/aarch64/cpu-cortex-a34.d: New test.
* testsuite/gas/aarch64/cpu-cortex-a65.d: New test.
* testsuite/gas/aarch64/cpu-cortex-a65ae.d: New test.
* testsuite/gas/aarch64/cpu-cortex-a76ae.d: New test.
* testsuite/gas/aarch64/cpu-cortex-a77.d: New test.
* testsuite/gas/aarch64/nop-asm.s: New test.
bfd * cpu-aarch64.c: New entries for Cortex-A34, Cortex-A65,
Cortex-A77, cortex-A65AE, and Cortex-A76AE.
ILP32 has 32-bit word and address, but currently they declared as 64-bit in
bfd_aarch64_arch_ilp32, which breaks further logic of bfd. This patch fixes it.
Glibc testsuite build with patched binutils shows that next tests stop to fail:
iconvdata/mtrace-tst-loading
iconvdata/tst-loading
iconvdata/tst-tables
localedata/mtrace-tst-leaks
localedata/tst-leaks
posix/tst-getaddrinfo4
posix/tst-getaddrinfo5
posix/tst-regex2
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.
