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| author | Yury Norov <ynorov@caviumnetworks.com> | 2016-12-01 12:31:51 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-12-01 12:31:51 +0000 |
| commit | 5cd1d8bcc24e948e86a636161e6d72f6316545a7 (patch) | |
| tree | 7808d35833e73ee1e3de1c96d540ebb51226bc79 /bfd/elfnn-aarch64.c | |
| parent | 40a0bfddf07620f5321927b3231502debb3b73bc (diff) | |
| download | gdb-5cd1d8bcc24e948e86a636161e6d72f6316545a7.zip gdb-5cd1d8bcc24e948e86a636161e6d72f6316545a7.tar.gz gdb-5cd1d8bcc24e948e86a636161e6d72f6316545a7.tar.bz2 | |
Fix accesses to the GOT for AARCH64 operating in 32-bit mode.
PR ld/20868
bfd * elfnn-aarch64.c (elfNN_aarch64_tls_relax): Use 32-bit accesses
to the GOT when operating in 32-bit mode.
ld * testsuite/ld-aarch64/tls-relax-gd-ie-ilp32.d: New test.
* testsuite/ld-aarch64/relocs-ilp32.ld: Linker script for the new
test.
* testsuite/ld-aarch64/aarch64-elf.exp: Run the new test.
Diffstat (limited to 'bfd/elfnn-aarch64.c')
| -rw-r--r-- | bfd/elfnn-aarch64.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c index 99b2a04..ffa8e6a 100644 --- a/bfd/elfnn-aarch64.c +++ b/bfd/elfnn-aarch64.c @@ -5841,24 +5841,29 @@ elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, else { /* GD->IE relaxation - ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] + ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] BL __tls_get_addr => mrs x1, tpidr_el0 R_AARCH64_CALL26 - NOP => add x0, x1, x0 - */ + NOP => add R0, R1, R0 + + Where R is x for lp64 mode, and w for ilp32 mode. */ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); /* Remove the relocation on the BL instruction. */ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); - bfd_putl32 (0xf9400000, contents + rel->r_offset); - /* We choose to fixup the BL and NOP instructions using the offset from the second relocation to allow flexibility in scheduling instructions between the ADD and BL. */ - bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); +#if ARCH_SIZE == 32 + bfd_putl32 (0xb9400000, contents + rel->r_offset); + bfd_putl32 (0x0b000020, contents + rel[1].r_offset + 4); +#else + bfd_putl32 (0xf9400000, contents + rel->r_offset); bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); +#endif + bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); return bfd_reloc_continue; } |