[PATCH v2 0/4] Introduce support for CFI landing pad PLT generation in RISC-V

[Kito Cheng]

This patch set introduces support for CFI landing pad PLT generation in
RISC-V.

Change since V1:

- Move setup_plt_values to the first patch.
- Drop unnessary changeon riscv_elfNN_set_options.
- Fix up coding style.

Kito Cheng (4):
  RISC-V: Refactor PLT generation
  RISC-V: Add GNU_PROPERTY_RISCV_FEATURE_1_CFI_SS and
    GNU_PROPERTY_RISCV_FEATURE_1_CFI_LP_UNLABELED
  RISC-V: Implment the merge logic for GNU_PROPERTY_RISCV_FEATURE_1_AND
  RISC-V: Support for unlabeled landing pad PLT generation

 bfd/elfnn-riscv.c                             | 306 ++++++++++++++++--
 bfd/elfxx-riscv.c                             | 170 ++++++++++
 bfd/elfxx-riscv.h                             |  19 ++
 binutils/readelf.c                            |  39 +++
 .../riscv/property-cfi-lp-unlabeled.d         |   8 +
 .../binutils-all/riscv/property-cfi-ss.d      |   8 +
 .../testsuite/binutils-all/riscv/property.s   |  41 +++
 include/elf/common.h                          |   5 +
 include/opcode/riscv.h                        |   1 +
 ld/testsuite/ld-riscv-elf/ld-riscv-elf.exp    |   8 +
 .../ld-riscv-elf/property-combine-and-1.d     |   6 +
 .../ld-riscv-elf/property-combine-and-2.d     |  11 +
 .../ld-riscv-elf/property-combine-and-3.d     |  11 +
 .../ld-riscv-elf/property-zicfilp-unlabeled.d |  10 +
 .../ld-riscv-elf/property-zicfilp-unlabeled.s |  21 ++
 ld/testsuite/ld-riscv-elf/property-zicfiss.d  |  10 +
 ld/testsuite/ld-riscv-elf/property-zicfiss.s  |  21 ++
 ld/testsuite/ld-riscv-elf/property1.s         |  21 ++
 ld/testsuite/ld-riscv-elf/property2.s         |   5 +
 ld/testsuite/ld-riscv-elf/property3.s         |  21 ++
 ld/testsuite/ld-riscv-elf/property4.s         |  21 ++
 .../ld-riscv-elf/zicfilp-unlabeled-plt.d      |  35 ++
 .../ld-riscv-elf/zicfilp-unlabeled-plt.s      |  21 ++
 23 files changed, 784 insertions(+), 35 deletions(-)
 create mode 100644 binutils/testsuite/binutils-all/riscv/property-cfi-lp-unlabeled.d
 create mode 100644 binutils/testsuite/binutils-all/riscv/property-cfi-ss.d
 create mode 100644 binutils/testsuite/binutils-all/riscv/property.s
 create mode 100644 ld/testsuite/ld-riscv-elf/property-combine-and-1.d
 create mode 100644 ld/testsuite/ld-riscv-elf/property-combine-and-2.d
 create mode 100644 ld/testsuite/ld-riscv-elf/property-combine-and-3.d
 create mode 100644 ld/testsuite/ld-riscv-elf/property-zicfilp-unlabeled.d
 create mode 100644 ld/testsuite/ld-riscv-elf/property-zicfilp-unlabeled.s
 create mode 100644 ld/testsuite/ld-riscv-elf/property-zicfiss.d
 create mode 100644 ld/testsuite/ld-riscv-elf/property-zicfiss.s
 create mode 100644 ld/testsuite/ld-riscv-elf/property1.s
 create mode 100644 ld/testsuite/ld-riscv-elf/property2.s
 create mode 100644 ld/testsuite/ld-riscv-elf/property3.s
 create mode 100644 ld/testsuite/ld-riscv-elf/property4.s
 create mode 100644 ld/testsuite/ld-riscv-elf/zicfilp-unlabeled-plt.d
 create mode 100644 ld/testsuite/ld-riscv-elf/zicfilp-unlabeled-plt.s

-- 
2.34.1