[LD][AARCH64]Add BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 Support.
bfd/ 2015-10-02 Renlin Li <renlin.li@arm.com> * elfnn-aarch64.c (aarch64_reloc_got_type): Add BFD_RELOC_AARCH64_LD_64_GOTOFF_LO15 support. (elfNN_aarch64_gc_sweep_hook): Likewise. (elfNN_aarch64_check_relocs): Likewise * elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise. (_bfd_aarch64_elf_resolve_relocation): Likewise (elfNN_aarch64_final_link_relocate): Calculate offset within GOT. ld/testsuite/ 2015-10-02 Renlin Li <renlin.li@arm.com> * ld-aarch64/emit-relocs-310.d: New. * ld-aarch64/emit-relocs-310.s: New. * ld-aarch64/aarch64-elf.exp: Run the test.
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Renlin Li
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@ -1,3 +1,13 @@
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2015-10-02 Renlin Li <renlin.li@arm.com>
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* elfnn-aarch64.c (aarch64_reloc_got_type): Add
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BFD_RELOC_AARCH64_LD_64_GOTOFF_LO15 support.
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(elfNN_aarch64_gc_sweep_hook): Likewise.
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(elfNN_aarch64_check_relocs): Likewise
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* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise.
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(_bfd_aarch64_elf_resolve_relocation): Likewise
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(elfNN_aarch64_final_link_relocate): Calculate offset within GOT.
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2015-10-02 Renlin Li <renlin.li@arm.com>
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* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Change if to
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@ -4414,6 +4414,7 @@ aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
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case BFD_RELOC_AARCH64_GOT_LD_PREL19:
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case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
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case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
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case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
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return GOT_NORMAL;
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@ -4963,6 +4964,7 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
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case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
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case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
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base_got = globals->root.sgot;
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off = h->got.offset;
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@ -5030,6 +5032,9 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
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addend = (globals->root.sgot->output_section->vma
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+ globals->root.sgot->output_offset);
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break;
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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value = (value - globals->root.sgot->output_section->vma
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- globals->root.sgot->output_offset);
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default:
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break;
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}
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@ -5311,6 +5316,70 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
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break;
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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if (h != NULL)
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value = aarch64_calculate_got_entry_vma (h, globals, info, value,
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output_bfd,
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unresolved_reloc_p);
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else
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{
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struct elf_aarch64_local_symbol *locals
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= elf_aarch64_locals (input_bfd);
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if (locals == NULL)
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{
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int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
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(*_bfd_error_handler)
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(_("%B: Local symbol descriptor table be NULL when applying "
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"relocation %s against local symbol"),
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input_bfd, elfNN_aarch64_howto_table[howto_index].name);
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abort ();
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}
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off = symbol_got_offset (input_bfd, h, r_symndx);
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base_got = globals->root.sgot;
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if (base_got == NULL)
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abort ();
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bfd_vma got_entry_addr = (base_got->output_section->vma
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+ base_got->output_offset + off);
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if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
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{
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bfd_put_64 (output_bfd, value, base_got->contents + off);
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if (bfd_link_pic (info))
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{
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asection *s;
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Elf_Internal_Rela outrel;
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/* For local symbol, we have done absolute relocation in static
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linking stage. While for share library, we need to update
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the content of GOT entry according to the share objects
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loading base address. So we need to generate a
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R_AARCH64_RELATIVE reloc for dynamic linker. */
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s = globals->root.srelgot;
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if (s == NULL)
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abort ();
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outrel.r_offset = got_entry_addr;
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outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
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outrel.r_addend = value;
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elf_append_rela (output_bfd, s, &outrel);
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}
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symbol_got_offset_mark (input_bfd, h, r_symndx);
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}
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}
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/* Update the relocation value to GOT entry addr as we have transformed
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the direct data access into indirect data access through GOT. */
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value = symbol_got_offset (input_bfd, h, r_symndx);
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value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
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0, weak_undef_p);
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*unresolved_reloc_p = FALSE;
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break;
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case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
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case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
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case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
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@ -6392,6 +6461,7 @@ elfNN_aarch64_gc_sweep_hook (bfd *abfd,
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case BFD_RELOC_AARCH64_GOT_LD_PREL19:
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case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
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case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
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case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
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@ -6746,6 +6816,7 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
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case BFD_RELOC_AARCH64_JUMP26:
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case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
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case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
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case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_NN:
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@ -6859,6 +6930,7 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
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case BFD_RELOC_AARCH64_GOT_LD_PREL19:
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case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
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case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
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case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
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@ -265,6 +265,7 @@ _bfd_aarch64_elf_put_addend (bfd *abfd,
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case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
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case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
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case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
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case BFD_RELOC_AARCH64_LDST128_LO12:
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@ -404,6 +405,7 @@ _bfd_aarch64_elf_resolve_relocation (bfd_reloc_code_real_type r_type,
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case BFD_RELOC_AARCH64_16:
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case BFD_RELOC_AARCH64_32:
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case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
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case BFD_RELOC_AARCH64_MOVW_G0:
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case BFD_RELOC_AARCH64_MOVW_G0_NC:
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case BFD_RELOC_AARCH64_MOVW_G0_S:
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@ -1,3 +1,9 @@
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2015-10-02 Renlin Li <renlin.li@arm.com>
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* ld-aarch64/emit-relocs-310.d: New.
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* ld-aarch64/emit-relocs-310.s: New.
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* ld-aarch64/aarch64-elf.exp: Run the test.
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2015-10-01 H.J. Lu <hongjiu.lu@intel.com>
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PR ld/19031
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@ -121,7 +121,7 @@ run_dump_test "emit-relocs-309-up"
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run_dump_test "emit-relocs-309-low"
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run_dump_test "emit-relocs-309-up-bad"
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run_dump_test "emit-relocs-309-low-bad"
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# 310 not done yet
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run_dump_test "emit-relocs-310"
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run_dump_test "emit-relocs-311"
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run_dump_test "emit-relocs-312"
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run_dump_test "emit-relocs-313"
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@ -0,0 +1,21 @@
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#source: emit-relocs-310.s
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#ld: -T relocs.ld --defsym globala=0x11000 --defsym globalb=0x45000 --defsym globalc=0x1234 -e0 --emit-relocs
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#objdump: -dr
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.*: +file format .*
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Disassembly of section .text:
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0000000000010000 <\.text>:
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10000: 580000c1 ldr x1, 10018 <\.text\+0x18>
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10004: 100000a2 adr x2, 10018 <\.text\+0x18>
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10008: 8b010041 add x1, x2, x1
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1000c: f9400820 ldr x0, \[x1,#16\]
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1000c: R_AARCH64_LD64_GOTOFF_LO15 globala
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10010: f9400c20 ldr x0, \[x1,#24\]
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10010: R_AARCH64_LD64_GOTOFF_LO15 globalb
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10014: f9400420 ldr x0, \[x1,#8\]
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10014: R_AARCH64_LD64_GOTOFF_LO15 globalc
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10018: 0000ffe8 .word 0x0000ffe8
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10018: R_AARCH64_PREL64 _GLOBAL_OFFSET_TABLE_
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1001c: 00000000 .word 0x00000000
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@ -0,0 +1,11 @@
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.text
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ldr x1, .Lgot
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adr x2, .Lgot
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add x1, x2, x1
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ldr x0, [x1, #:gotoff_lo15:globala]
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ldr x0, [x1, #:gotoff_lo15:globalb]
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ldr x0, [x1, #:gotoff_lo15:globalc]
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.Lgot:
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.dword _GLOBAL_OFFSET_TABLE_ - .
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