binutils-gdb/ld/testsuite/ld-riscv-elf/weakref64.s

	.option nopic
	.text
	.align	1
	.globl	_start
	.type	_start, @function
_start:
	lui	a5,%hi(f)
	addi	a5,a5,%lo(f)
	beq	a5,zero,.L1
	lla	a5,f
	beqz	a5,.L1
	addi	sp,sp,-16
	sd	ra,8(sp)
	call	f
	ld	ra,8(sp)
	addi	sp,sp,16
	tail	f
.L1:
	ret
	.size	_start, .-_start
	.weak	f
RISC-V: Handle out-of-range calls to undefined weak. bfd/ PR ld/23244 * elfnn-riscv.c (riscv_elf_relocate_section) <R_RISCV_CALL>: Check for and handle an undefined weak with no PLT. ld/ * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run new weak ref tests. * testsuite/ld-riscv-elf/weakref.ld: New. * testsuite/ld-riscv-elf/weakref32.d: New. * testsuite/ld-riscv-elf/weakref32.s: New. * testsuite/ld-riscv-elf/weakref64.d: New. * testsuite/ld-riscv-elf/weakref64.s: New. 2018-06-04 06:42:29 +08:00			`.option nopic`
			`.text`
			`.align 1`
			`.globl _start`
			`.type _start, @function`
			`_start:`
RISC-V: Optimize lui and auipc relaxations for undefweak symbol. For the lui and auipc relaxations, since the symbol value of an undefined weak symbol is always be zero, we can optimize the patterns into a single LI/MV/ADDI instruction. bfd/ * elfnn-riscv.c (riscv_pcgp_hi_reloc): Add new field undefined_weak. (riscv_record_pcgp_hi_reloc): New parameter undefined_weak. Set undefined_weak field from it. (relax_func_t): New parameter undefined_weak. (_bfd_riscv_relax_call): New ignored parameter undefined_weak. (_bfd_riscv_relax_tls_le): Likewise. (_bfd_riscv_relax_align): Likewise. (_bfd_riscv_relax_delete): Likewise. (_bfd_riscv_relax_lui): New parameter undefined_weak. If true, allow relaxing. For LO12* relocs, set rs1 to x0 when undefined_weak. (_bfd_riscv_relax_pc): New parameter undefined_weak. For LO12* relocs, set undefined_weak from hi_reloc. If true, allow relaxing. For LO12* relocs, set rs1 to x0 when undefined_weak and change to non-pcrel reloc. (_bfd_riscv_relax_section): New local undefined_weak. Set for undef weak relocs that can be relaxed. Pass to relax_func call. ld/ * testsuite/ld-riscv-elf/weakref32.s: Add relaxable undef weak code. * testsuite/ld-riscv-elf/weakref64.s: Likewise. * testsuite/ld-riscv-elf/weakref32.d: Updated. * testsuite/ld-riscv-elf/weakref64.d: Updated. 2019-09-21 06:01:20 +08:00			`lui a5,%hi(f)`
			`addi a5,a5,%lo(f)`
			`beq a5,zero,.L1`
RISC-V: Handle out-of-range calls to undefined weak. bfd/ PR ld/23244 * elfnn-riscv.c (riscv_elf_relocate_section) <R_RISCV_CALL>: Check for and handle an undefined weak with no PLT. ld/ * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run new weak ref tests. * testsuite/ld-riscv-elf/weakref.ld: New. * testsuite/ld-riscv-elf/weakref32.d: New. * testsuite/ld-riscv-elf/weakref32.s: New. * testsuite/ld-riscv-elf/weakref64.d: New. * testsuite/ld-riscv-elf/weakref64.s: New. 2018-06-04 06:42:29 +08:00			`lla a5,f`
			`beqz a5,.L1`
			`addi sp,sp,-16`
			`sd ra,8(sp)`
			`call f`
			`ld ra,8(sp)`
			`addi sp,sp,16`
			`tail f`
			`.L1:`
			`ret`
			`.size _start, .-_start`
			`.weak f`