/* AArch64-specific support for NN-bit ELF.
- Copyright 2009-2013 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
Contributed by ARM Ltd.
This file is part of BFD, the Binary File Descriptor library.
#include "bfd_stdint.h"
#include "elf-bfd.h"
#include "bfdlink.h"
+#include "objalloc.h"
#include "elf/aarch64.h"
#include "elfxx-aarch64.h"
#endif
#define IS_AARCH64_TLS_RELOC(R_TYPE) \
- ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
+ ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
|| IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
-#define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
- ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
+#define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
+ ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
+
+#define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
+ ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC)
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
#define ELIMINATE_COPY_RELOCS 0
#if ARCH_SIZE == 64
HOWTO (R_AARCH64_NULL, /* type */
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
#else
HOWTO (R_AARCH64_NONE, /* type */
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
0xffc, /* dst_mask */
FALSE), /* pcrel_offset */
+ /* Lower 16 bits of GOT offset for the symbol. */
+ HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Higher 16 bits of GOT offset for the symbol. */
+ HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* LD64: GOT offset for the symbol. */
+ HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
+ 3, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
+ FALSE, /* partial_inplace */
+ 0x7ff8, /* src_mask */
+ 0x7ff8, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* LD32: GOT offset to the page address of GOT table.
+ (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
+ HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
+ FALSE, /* partial_inplace */
+ 0x5ffc, /* src_mask */
+ 0x5ffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* LD64: GOT offset to the page address of GOT table.
+ (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
+ HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
+ 3, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
+ FALSE, /* partial_inplace */
+ 0x7ff8, /* src_mask */
+ 0x7ff8, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
/* Get to the page for the GOT entry for the symbol
(G(S) - P) using an ADRP instruction. */
HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
0x1fffff, /* dst_mask */
TRUE), /* pcrel_offset */
+ HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 21, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
+ FALSE, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
/* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
0, /* rightshift */
0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
- 16, /* rightshift */
+ /* Lower 16 bits of GOT offset to tls_index. */
+ HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
+ 0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
+ AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
- 0, /* rightshift */
+ /* Higher 16 bits of GOT offset to tls_index. */
+ HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
+ 16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
+ AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
+ 19, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0x1ffffc, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
- 32, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
- FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
- 16, /* rightshift */
+ HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
+ 0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
+ AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
+ HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
+ AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
- 0, /* rightshift */
+ /* ADD: bit[23:12] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
+ 12, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
+ AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
+ /* Unsigned 12 bit byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
- FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
- 12, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
+ AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
FALSE, /* partial_inplace */
0xfff, /* src_mask */
0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
+ /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
+ HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
+ AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
FALSE, /* partial_inplace */
0xfff, /* src_mask */
0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
+ /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
+ HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
+ AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
FALSE, /* partial_inplace */
0xfff, /* src_mask */
0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
- 2, /* rightshift */
+ /* Get to the page for the GOT entry for the symbol
+ (G(S) - P) using an ADRP instruction. */
+ HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
+ 12, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
21, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
+ AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
FALSE, /* partial_inplace */
- 0x1ffffc, /* src_mask */
- 0x1ffffc, /* dst_mask */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
TRUE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
+ HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
21, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
+ AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
FALSE, /* partial_inplace */
0x1fffff, /* src_mask */
0x1fffff, /* dst_mask */
TRUE), /* pcrel_offset */
- /* Get to the page for the GOT entry for the symbol
- (G(S) - P) using an ADRP instruction. */
- HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
- 12, /* rightshift */
+ /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
+ 1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ 11, /* bitsize */
+ FALSE, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
+ AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
FALSE, /* partial_inplace */
- 0x1fffff, /* src_mask */
- 0x1fffff, /* dst_mask */
- TRUE), /* pcrel_offset */
+ 0x1ffc00, /* src_mask */
+ 0x1ffc00, /* dst_mask */
+ FALSE), /* pcrel_offset */
- /* LD64: GOT offset G(S) & 0xff8. */
- HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */
- 3, /* rightshift */
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
+ 1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 11, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
+ 10, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */
+ AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
FALSE, /* partial_inplace */
- 0xff8, /* src_mask */
- 0xff8, /* dst_mask */
+ 0x1ffc00, /* src_mask */
+ 0x1ffc00, /* dst_mask */
FALSE), /* pcrel_offset */
- /* LD32: GOT offset G(S) & 0xffc. */
- HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
+ /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 10, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
+ AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
FALSE, /* partial_inplace */
- 0xffc, /* src_mask */
- 0xffc, /* dst_mask */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
FALSE), /* pcrel_offset */
- /* ADD: GOT offset G(S) & 0xfff. */
- HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */
- 0, /* rightshift */
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
+ 2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 10, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
+ 10, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */
+ AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
FALSE, /* partial_inplace */
- 0xfff, /* src_mask */
- 0xfff, /* dst_mask */
+ 0xffc00, /* src_mask */
+ 0xffc00, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
- 16, /* rightshift */
+ /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
+ 3, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 9, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
+ AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
+ 3, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 9, /* bitsize */
+ FALSE, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0x7fc00, /* src_mask */
+ 0x7fc00, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
+ AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
+ 10, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_LDR), /* name */
+ AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
FALSE, /* partial_inplace */
- 0x0, /* src_mask */
- 0x0, /* dst_mask */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
+ /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_ADD), /* name */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
FALSE, /* partial_inplace */
- 0x0, /* src_mask */
- 0x0, /* dst_mask */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
+ /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
+ HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_CALL), /* name */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
FALSE, /* partial_inplace */
- 0x0, /* src_mask */
- 0x0, /* dst_mask */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (COPY), /* type */
- 0, /* rightshift */
+ /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
+ 16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (COPY), /* name */
- TRUE, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (GLOB_DAT), /* type */
- 0, /* rightshift */
+ /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
+ HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
+ 16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (GLOB_DAT), /* name */
- TRUE, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (JUMP_SLOT), /* type */
- 0, /* rightshift */
+ /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
+ 32, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (JUMP_SLOT), /* name */
- TRUE, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (RELATIVE), /* type */
- 0, /* rightshift */
+ HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
+ 32, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (RELATIVE), /* name */
- TRUE, /* partial_inplace */
- ALL_ONES, /* src_mask */
- ALL_ONES, /* dst_mask */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
- 0, /* rightshift */
+ HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
+ 16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLS_DTPMOD), /* name */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- FALSE), /* pc_reloffset */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLS_DTPREL), /* type */
- 0, /* rightshift */
+ HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
+ 16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLS_DTPREL), /* name */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLS_TPREL), /* type */
+ HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLS_TPREL), /* name */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (TLSDESC), /* type */
+ HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC), /* name */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (IRELATIVE), /* type */
- 0, /* rightshift */
+ HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
+ 12, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
+ 12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (IRELATIVE), /* name */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- EMPTY_HOWTO (0),
-};
-
-static reloc_howto_type elfNN_aarch64_howto_none =
- HOWTO (R_AARCH64_NONE, /* type */
+ HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- "R_AARCH64_NONE", /* name */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE); /* pcrel_offset */
-
-/* Given HOWTO, return the bfd internal relocation enumerator. */
-
-static bfd_reloc_code_real_type
-elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
-{
- const int size
- = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
- const ptrdiff_t offset
- = howto - elfNN_aarch64_howto_table;
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- if (offset > 0 && offset < size - 1)
- return BFD_RELOC_AARCH64_RELOC_START + offset;
+ HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- if (howto == &elfNN_aarch64_howto_none)
- return BFD_RELOC_AARCH64_NONE;
+ HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 19, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
+ FALSE, /* partial_inplace */
+ 0x0ffffe0, /* src_mask */
+ 0x0ffffe0, /* dst_mask */
+ TRUE), /* pcrel_offset */
- return BFD_RELOC_AARCH64_RELOC_START;
-}
+ HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 21, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
+ FALSE, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
-/* Given R_TYPE, return the bfd internal relocation enumerator. */
+ /* Get to the page for the GOT entry for the symbol
+ (G(S) - P) using an ADRP instruction. */
+ HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
+ 12, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 21, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
+ FALSE, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
-static bfd_reloc_code_real_type
-elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type)
+ /* LD64: GOT offset G(S) & 0xff8. */
+ HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */
+ 3, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xff8, /* src_mask */
+ 0xff8, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* LD32: GOT offset G(S) & 0xffc. */
+ HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xffc, /* src_mask */
+ 0xffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* ADD: GOT offset G(S) & 0xfff. */
+ HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LDR), /* name */
+ FALSE, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0x0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADD), /* name */
+ FALSE, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0x0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_CALL), /* name */
+ FALSE, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0x0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (COPY), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (COPY), /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (GLOB_DAT), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (GLOB_DAT), /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (JUMP_SLOT), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (JUMP_SLOT), /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (RELATIVE), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (RELATIVE), /* name */
+ TRUE, /* partial_inplace */
+ ALL_ONES, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+#if ARCH_SIZE == 64
+ AARCH64_R_STR (TLS_DTPMOD64), /* name */
+#else
+ AARCH64_R_STR (TLS_DTPMOD), /* name */
+#endif
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ FALSE), /* pc_reloffset */
+
+ HOWTO (AARCH64_R (TLS_DTPREL), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+#if ARCH_SIZE == 64
+ AARCH64_R_STR (TLS_DTPREL64), /* name */
+#else
+ AARCH64_R_STR (TLS_DTPREL), /* name */
+#endif
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLS_TPREL), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+#if ARCH_SIZE == 64
+ AARCH64_R_STR (TLS_TPREL64), /* name */
+#else
+ AARCH64_R_STR (TLS_TPREL), /* name */
+#endif
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSDESC), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC), /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (IRELATIVE), /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (IRELATIVE), /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (0),
+};
+
+static reloc_howto_type elfNN_aarch64_howto_none =
+ HOWTO (R_AARCH64_NONE, /* type */
+ 0, /* rightshift */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_AARCH64_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE); /* pcrel_offset */
+
+/* Given HOWTO, return the bfd internal relocation enumerator. */
+
+static bfd_reloc_code_real_type
+elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
+{
+ const int size
+ = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
+ const ptrdiff_t offset
+ = howto - elfNN_aarch64_howto_table;
+
+ if (offset > 0 && offset < size - 1)
+ return BFD_RELOC_AARCH64_RELOC_START + offset;
+
+ if (howto == &elfNN_aarch64_howto_none)
+ return BFD_RELOC_AARCH64_NONE;
+
+ return BFD_RELOC_AARCH64_RELOC_START;
+}
+
+/* Given R_TYPE, return the bfd internal relocation enumerator. */
+
+static bfd_reloc_code_real_type
+elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type)
+{
+ static bfd_boolean initialized_p = FALSE;
+ /* Indexed by R_TYPE, values are offsets in the howto_table. */
+ static unsigned int offsets[R_AARCH64_end];
+
+ if (initialized_p == FALSE)
+ {
+ unsigned int i;
+
+ for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
+ if (elfNN_aarch64_howto_table[i].type != 0)
+ offsets[elfNN_aarch64_howto_table[i].type] = i;
+
+ initialized_p = TRUE;
+ }
+
+ if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
+ return BFD_RELOC_AARCH64_NONE;
+
+ /* PR 17512: file: b371e70a. */
+ if (r_type >= R_AARCH64_end)
+ {
+ _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return BFD_RELOC_AARCH64_NONE;
+ }
+
+ return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
+}
+
+struct elf_aarch64_reloc_map
+{
+ bfd_reloc_code_real_type from;
+ bfd_reloc_code_real_type to;
+};
+
+/* Map bfd generic reloc to AArch64-specific reloc. */
+static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
+{
+ {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
+
+ /* Basic data relocations. */
+ {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
+ {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
+ {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
+ {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
+ {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
+ {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
+ {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
+};
+
+/* Given the bfd internal relocation enumerator in CODE, return the
+ corresponding howto entry. */
+
+static reloc_howto_type *
+elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
+{
+ unsigned int i;
+
+ /* Convert bfd generic reloc to AArch64-specific reloc. */
+ if (code < BFD_RELOC_AARCH64_RELOC_START
+ || code > BFD_RELOC_AARCH64_RELOC_END)
+ for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
+ if (elf_aarch64_reloc_map[i].from == code)
+ {
+ code = elf_aarch64_reloc_map[i].to;
+ break;
+ }
+
+ if (code > BFD_RELOC_AARCH64_RELOC_START
+ && code < BFD_RELOC_AARCH64_RELOC_END)
+ if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
+ return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
+
+ if (code == BFD_RELOC_AARCH64_NONE)
+ return &elfNN_aarch64_howto_none;
+
+ return NULL;
+}
+
+static reloc_howto_type *
+elfNN_aarch64_howto_from_type (unsigned int r_type)
+{
+ bfd_reloc_code_real_type val;
+ reloc_howto_type *howto;
+
+#if ARCH_SIZE == 32
+ if (r_type > 256)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+ }
+#endif
+
+ if (r_type == R_AARCH64_NONE)
+ return &elfNN_aarch64_howto_none;
+
+ val = elfNN_aarch64_bfd_reloc_from_type (r_type);
+ howto = elfNN_aarch64_howto_from_bfd_reloc (val);
+
+ if (howto != NULL)
+ return howto;
+
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+}
+
+static void
+elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
+ Elf_Internal_Rela *elf_reloc)
+{
+ unsigned int r_type;
+
+ r_type = ELFNN_R_TYPE (elf_reloc->r_info);
+ bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type);
+}
+
+static reloc_howto_type *
+elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
+
+ if (howto != NULL)
+ return howto;
+
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+}
+
+static reloc_howto_type *
+elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
+ if (elfNN_aarch64_howto_table[i].name != NULL
+ && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
+ return &elfNN_aarch64_howto_table[i];
+
+ return NULL;
+}
+
+#define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
+#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
+#define TARGET_BIG_SYM aarch64_elfNN_be_vec
+#define TARGET_BIG_NAME "elfNN-bigaarch64"
+
+/* The linker script knows the section names for placement.
+ The entry_names are used to do simple name mangling on the stubs.
+ Given a function name, and its type, the stub can be found. The
+ name can be changed. The only requirement is the %s be present. */
+#define STUB_ENTRY_NAME "__%s_veneer"
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+
+#define AARCH64_MAX_FWD_BRANCH_OFFSET \
+ (((1 << 25) - 1) << 2)
+#define AARCH64_MAX_BWD_BRANCH_OFFSET \
+ (-((1 << 25) << 2))
+
+#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
+#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
+
+static int
+aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
+{
+ bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
+ return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
+}
+
+static int
+aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
+{
+ bfd_signed_vma offset = (bfd_signed_vma) (value - place);
+ return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
+ && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
+}
+
+static const uint32_t aarch64_adrp_branch_stub [] =
+{
+ 0x90000010, /* adrp ip0, X */
+ /* R_AARCH64_ADR_HI21_PCREL(X) */
+ 0x91000210, /* add ip0, ip0, :lo12:X */
+ /* R_AARCH64_ADD_ABS_LO12_NC(X) */
+ 0xd61f0200, /* br ip0 */
+};
+
+static const uint32_t aarch64_long_branch_stub[] =
+{
+#if ARCH_SIZE == 64
+ 0x58000090, /* ldr ip0, 1f */
+#else
+ 0x18000090, /* ldr wip0, 1f */
+#endif
+ 0x10000011, /* adr ip1, #0 */
+ 0x8b110210, /* add ip0, ip0, ip1 */
+ 0xd61f0200, /* br ip0 */
+ 0x00000000, /* 1: .xword or .word
+ R_AARCH64_PRELNN(X) + 12
+ */
+ 0x00000000,
+};
+
+static const uint32_t aarch64_erratum_835769_stub[] =
+{
+ 0x00000000, /* Placeholder for multiply accumulate. */
+ 0x14000000, /* b <label> */
+};
+
+static const uint32_t aarch64_erratum_843419_stub[] =
+{
+ 0x00000000, /* Placeholder for LDR instruction. */
+ 0x14000000, /* b <label> */
+};
+
+/* Section name for stubs is the associated section name plus this
+ string. */
+#define STUB_SUFFIX ".stub"
+
+enum elf_aarch64_stub_type
+{
+ aarch64_stub_none,
+ aarch64_stub_adrp_branch,
+ aarch64_stub_long_branch,
+ aarch64_stub_erratum_835769_veneer,
+ aarch64_stub_erratum_843419_veneer,
+};
+
+struct elf_aarch64_stub_hash_entry
+{
+ /* Base hash table entry structure. */
+ struct bfd_hash_entry root;
+
+ /* The stub section. */
+ asection *stub_sec;
+
+ /* Offset within stub_sec of the beginning of this stub. */
+ bfd_vma stub_offset;
+
+ /* Given the symbol's value and its section we can determine its final
+ value when building the stubs (so the stub knows where to jump). */
+ bfd_vma target_value;
+ asection *target_section;
+
+ enum elf_aarch64_stub_type stub_type;
+
+ /* The symbol table entry, if any, that this was derived from. */
+ struct elf_aarch64_link_hash_entry *h;
+
+ /* Destination symbol type */
+ unsigned char st_type;
+
+ /* Where this stub is being called from, or, in the case of combined
+ stub sections, the first input section in the group. */
+ asection *id_sec;
+
+ /* The name for the local symbol at the start of this stub. The
+ stub name in the hash table has to be unique; this does not, so
+ it can be friendlier. */
+ char *output_name;
+
+ /* The instruction which caused this stub to be generated (only valid for
+ erratum 835769 workaround stubs at present). */
+ uint32_t veneered_insn;
+
+ /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
+ bfd_vma adrp_offset;
+};
+
+/* Used to build a map of a section. This is required for mixed-endian
+ code/data. */
+
+typedef struct elf_elf_section_map
+{
+ bfd_vma vma;
+ char type;
+}
+elf_aarch64_section_map;
+
+
+typedef struct _aarch64_elf_section_data
+{
+ struct bfd_elf_section_data elf;
+ unsigned int mapcount;
+ unsigned int mapsize;
+ elf_aarch64_section_map *map;
+}
+_aarch64_elf_section_data;
+
+#define elf_aarch64_section_data(sec) \
+ ((_aarch64_elf_section_data *) elf_section_data (sec))
+
+/* The size of the thread control block which is defined to be two pointers. */
+#define TCB_SIZE (ARCH_SIZE/8)*2
+
+struct elf_aarch64_local_symbol
+{
+ unsigned int got_type;
+ bfd_signed_vma got_refcount;
+ bfd_vma got_offset;
+
+ /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
+ offset is from the end of the jump table and reserved entries
+ within the PLTGOT.
+
+ The magic value (bfd_vma) -1 indicates that an offset has not be
+ allocated. */
+ bfd_vma tlsdesc_got_jump_table_offset;
+};
+
+struct elf_aarch64_obj_tdata
+{
+ struct elf_obj_tdata root;
+
+ /* local symbol descriptors */
+ struct elf_aarch64_local_symbol *locals;
+
+ /* Zero to warn when linking objects with incompatible enum sizes. */
+ int no_enum_size_warning;
+
+ /* Zero to warn when linking objects with incompatible wchar_t sizes. */
+ int no_wchar_size_warning;
+};
+
+#define elf_aarch64_tdata(bfd) \
+ ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
+
+#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
+
+#define is_aarch64_elf(bfd) \
+ (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
+ && elf_tdata (bfd) != NULL \
+ && elf_object_id (bfd) == AARCH64_ELF_DATA)
+
+static bfd_boolean
+elfNN_aarch64_mkobject (bfd *abfd)
+{
+ return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
+ AARCH64_ELF_DATA);
+}
+
+#define elf_aarch64_hash_entry(ent) \
+ ((struct elf_aarch64_link_hash_entry *)(ent))
+
+#define GOT_UNKNOWN 0
+#define GOT_NORMAL 1
+#define GOT_TLS_GD 2
+#define GOT_TLS_IE 4
+#define GOT_TLSDESC_GD 8
+
+#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
+
+/* AArch64 ELF linker hash entry. */
+struct elf_aarch64_link_hash_entry
+{
+ struct elf_link_hash_entry root;
+
+ /* Track dynamic relocs copied for this symbol. */
+ struct elf_dyn_relocs *dyn_relocs;
+
+ /* Since PLT entries have variable size, we need to record the
+ index into .got.plt instead of recomputing it from the PLT
+ offset. */
+ bfd_signed_vma plt_got_offset;
+
+ /* Bit mask representing the type of GOT entry(s) if any required by
+ this symbol. */
+ unsigned int got_type;
+
+ /* A pointer to the most recently used stub hash entry against this
+ symbol. */
+ struct elf_aarch64_stub_hash_entry *stub_cache;
+
+ /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
+ is from the end of the jump table and reserved entries within the PLTGOT.
+
+ The magic value (bfd_vma) -1 indicates that an offset has not
+ be allocated. */
+ bfd_vma tlsdesc_got_jump_table_offset;
+};
+
+static unsigned int
+elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
+ bfd *abfd,
+ unsigned long r_symndx)
+{
+ if (h)
+ return elf_aarch64_hash_entry (h)->got_type;
+
+ if (! elf_aarch64_locals (abfd))
+ return GOT_UNKNOWN;
+
+ return elf_aarch64_locals (abfd)[r_symndx].got_type;
+}
+
+/* Get the AArch64 elf linker hash table from a link_info structure. */
+#define elf_aarch64_hash_table(info) \
+ ((struct elf_aarch64_link_hash_table *) ((info)->hash))
+
+#define aarch64_stub_hash_lookup(table, string, create, copy) \
+ ((struct elf_aarch64_stub_hash_entry *) \
+ bfd_hash_lookup ((table), (string), (create), (copy)))
+
+/* AArch64 ELF linker hash table. */
+struct elf_aarch64_link_hash_table
{
- static bfd_boolean initialized_p = FALSE;
- /* Indexed by R_TYPE, values are offsets in the howto_table. */
- static unsigned int offsets[R_AARCH64_end];
+ /* The main hash table. */
+ struct elf_link_hash_table root;
- if (initialized_p == FALSE)
+ /* Nonzero to force PIC branch veneers. */
+ int pic_veneer;
+
+ /* Fix erratum 835769. */
+ int fix_erratum_835769;
+
+ /* Fix erratum 843419. */
+ int fix_erratum_843419;
+
+ /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
+ int fix_erratum_843419_adr;
+
+ /* The number of bytes in the initial entry in the PLT. */
+ bfd_size_type plt_header_size;
+
+ /* The number of bytes in the subsequent PLT etries. */
+ bfd_size_type plt_entry_size;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sdynbss;
+ asection *srelbss;
+
+ /* Small local sym cache. */
+ struct sym_cache sym_cache;
+
+ /* For convenience in allocate_dynrelocs. */
+ bfd *obfd;
+
+ /* The amount of space used by the reserved portion of the sgotplt
+ section, plus whatever space is used by the jump slots. */
+ bfd_vma sgotplt_jump_table_size;
+
+ /* The stub hash table. */
+ struct bfd_hash_table stub_hash_table;
+
+ /* Linker stub bfd. */
+ bfd *stub_bfd;
+
+ /* Linker call-backs. */
+ asection *(*add_stub_section) (const char *, asection *);
+ void (*layout_sections_again) (void);
+
+ /* Array to keep track of which stub sections have been created, and
+ information on stub grouping. */
+ struct map_stub
+ {
+ /* This is the section to which stubs in the group will be
+ attached. */
+ asection *link_sec;
+ /* The stub section. */
+ asection *stub_sec;
+ } *stub_group;
+
+ /* Assorted information used by elfNN_aarch64_size_stubs. */
+ unsigned int bfd_count;
+ unsigned int top_index;
+ asection **input_list;
+
+ /* The offset into splt of the PLT entry for the TLS descriptor
+ resolver. Special values are 0, if not necessary (or not found
+ to be necessary yet), and -1 if needed but not determined
+ yet. */
+ bfd_vma tlsdesc_plt;
+
+ /* The GOT offset for the lazy trampoline. Communicated to the
+ loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
+ indicates an offset is not allocated. */
+ bfd_vma dt_tlsdesc_got;
+
+ /* Used by local STT_GNU_IFUNC symbols. */
+ htab_t loc_hash_table;
+ void * loc_hash_memory;
+};
+
+/* Create an entry in an AArch64 ELF linker hash table. */
+
+static struct bfd_hash_entry *
+elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ struct elf_aarch64_link_hash_entry *ret =
+ (struct elf_aarch64_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == NULL)
+ ret = bfd_hash_allocate (table,
+ sizeof (struct elf_aarch64_link_hash_entry));
+ if (ret == NULL)
+ return (struct bfd_hash_entry *) ret;
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf_aarch64_link_hash_entry *)
+ _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+ if (ret != NULL)
{
- unsigned int i;
+ ret->dyn_relocs = NULL;
+ ret->got_type = GOT_UNKNOWN;
+ ret->plt_got_offset = (bfd_vma) - 1;
+ ret->stub_cache = NULL;
+ ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
+ }
- for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
- if (elfNN_aarch64_howto_table[i].type != 0)
- offsets[elfNN_aarch64_howto_table[i].type] = i;
+ return (struct bfd_hash_entry *) ret;
+}
- initialized_p = TRUE;
+/* Initialize an entry in the stub hash table. */
+
+static struct bfd_hash_entry *
+stub_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table, const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table,
+ sizeof (struct
+ elf_aarch64_stub_hash_entry));
+ if (entry == NULL)
+ return entry;
}
- if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
- return BFD_RELOC_AARCH64_NONE;
+ /* Call the allocation method of the superclass. */
+ entry = bfd_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct elf_aarch64_stub_hash_entry *eh;
- return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
+ /* Initialize the local fields. */
+ eh = (struct elf_aarch64_stub_hash_entry *) entry;
+ eh->adrp_offset = 0;
+ eh->stub_sec = NULL;
+ eh->stub_offset = 0;
+ eh->target_value = 0;
+ eh->target_section = NULL;
+ eh->stub_type = aarch64_stub_none;
+ eh->h = NULL;
+ eh->id_sec = NULL;
+ }
+
+ return entry;
}
-struct elf_aarch64_reloc_map
+/* Compute a hash of a local hash entry. We use elf_link_hash_entry
+ for local symbol so that we can handle local STT_GNU_IFUNC symbols
+ as global symbol. We reuse indx and dynstr_index for local symbol
+ hash since they aren't used by global symbols in this backend. */
+
+static hashval_t
+elfNN_aarch64_local_htab_hash (const void *ptr)
{
- bfd_reloc_code_real_type from;
- bfd_reloc_code_real_type to;
-};
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) ptr;
+ return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
+}
-/* Map bfd generic reloc to AArch64-specific reloc. */
-static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
+/* Compare local hash entries. */
+
+static int
+elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
{
- {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
+ struct elf_link_hash_entry *h1
+ = (struct elf_link_hash_entry *) ptr1;
+ struct elf_link_hash_entry *h2
+ = (struct elf_link_hash_entry *) ptr2;
- /* Basic data relocations. */
- {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
- {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
- {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
- {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
- {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
- {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
- {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
-};
+ return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
+}
-/* Given the bfd internal relocation enumerator in CODE, return the
- corresponding howto entry. */
+/* Find and/or create a hash entry for local symbol. */
-static reloc_howto_type *
-elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
+static struct elf_link_hash_entry *
+elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
+ bfd *abfd, const Elf_Internal_Rela *rel,
+ bfd_boolean create)
{
- unsigned int i;
+ struct elf_aarch64_link_hash_entry e, *ret;
+ asection *sec = abfd->sections;
+ hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
+ ELFNN_R_SYM (rel->r_info));
+ void **slot;
+
+ e.root.indx = sec->id;
+ e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
+ slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
+ create ? INSERT : NO_INSERT);
+
+ if (!slot)
+ return NULL;
- /* Convert bfd generic reloc to AArch64-specific reloc. */
- if (code < BFD_RELOC_AARCH64_RELOC_START
- || code > BFD_RELOC_AARCH64_RELOC_END)
- for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
- if (elf_aarch64_reloc_map[i].from == code)
+ if (*slot)
+ {
+ ret = (struct elf_aarch64_link_hash_entry *) *slot;
+ return &ret->root;
+ }
+
+ ret = (struct elf_aarch64_link_hash_entry *)
+ objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
+ sizeof (struct elf_aarch64_link_hash_entry));
+ if (ret)
+ {
+ memset (ret, 0, sizeof (*ret));
+ ret->root.indx = sec->id;
+ ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
+ ret->root.dynindx = -1;
+ *slot = ret;
+ }
+ return &ret->root;
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ struct elf_aarch64_link_hash_entry *edir, *eind;
+
+ edir = (struct elf_aarch64_link_hash_entry *) dir;
+ eind = (struct elf_aarch64_link_hash_entry *) ind;
+
+ if (eind->dyn_relocs != NULL)
+ {
+ if (edir->dyn_relocs != NULL)
{
- code = elf_aarch64_reloc_map[i].to;
- break;
+ struct elf_dyn_relocs **pp;
+ struct elf_dyn_relocs *p;
+
+ /* Add reloc counts against the indirect sym to the direct sym
+ list. Merge any entries against the same section. */
+ for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
+ {
+ struct elf_dyn_relocs *q;
+
+ for (q = edir->dyn_relocs; q != NULL; q = q->next)
+ if (q->sec == p->sec)
+ {
+ q->pc_count += p->pc_count;
+ q->count += p->count;
+ *pp = p->next;
+ break;
+ }
+ if (q == NULL)
+ pp = &p->next;
+ }
+ *pp = edir->dyn_relocs;
}
- if (code > BFD_RELOC_AARCH64_RELOC_START
- && code < BFD_RELOC_AARCH64_RELOC_END)
- if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
- return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
+ edir->dyn_relocs = eind->dyn_relocs;
+ eind->dyn_relocs = NULL;
+ }
+
+ if (ind->root.type == bfd_link_hash_indirect)
+ {
+ /* Copy over PLT info. */
+ if (dir->got.refcount <= 0)
+ {
+ edir->got_type = eind->got_type;
+ eind->got_type = GOT_UNKNOWN;
+ }
+ }
+
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+}
+
+/* Destroy an AArch64 elf linker hash table. */
+
+static void
+elfNN_aarch64_link_hash_table_free (bfd *obfd)
+{
+ struct elf_aarch64_link_hash_table *ret
+ = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
- return NULL;
+ if (ret->loc_hash_table)
+ htab_delete (ret->loc_hash_table);
+ if (ret->loc_hash_memory)
+ objalloc_free ((struct objalloc *) ret->loc_hash_memory);
+
+ bfd_hash_table_free (&ret->stub_hash_table);
+ _bfd_elf_link_hash_table_free (obfd);
}
-static reloc_howto_type *
-elfNN_aarch64_howto_from_type (unsigned int r_type)
+/* Create an AArch64 elf linker hash table. */
+
+static struct bfd_link_hash_table *
+elfNN_aarch64_link_hash_table_create (bfd *abfd)
{
- bfd_reloc_code_real_type val;
- reloc_howto_type *howto;
+ struct elf_aarch64_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
-#if ARCH_SIZE == 32
- if (r_type > 256)
+ ret = bfd_zmalloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init
+ (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
+ sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
{
- bfd_set_error (bfd_error_bad_value);
+ free (ret);
return NULL;
}
-#endif
- if (r_type == R_AARCH64_NONE)
- return &elfNN_aarch64_howto_none;
+ ret->plt_header_size = PLT_ENTRY_SIZE;
+ ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
+ ret->obfd = abfd;
+ ret->dt_tlsdesc_got = (bfd_vma) - 1;
- val = elfNN_aarch64_bfd_reloc_from_type (r_type);
- howto = elfNN_aarch64_howto_from_bfd_reloc (val);
+ if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
+ sizeof (struct elf_aarch64_stub_hash_entry)))
+ {
+ _bfd_elf_link_hash_table_free (abfd);
+ return NULL;
+ }
- if (howto != NULL)
- return howto;
+ ret->loc_hash_table = htab_try_create (1024,
+ elfNN_aarch64_local_htab_hash,
+ elfNN_aarch64_local_htab_eq,
+ NULL);
+ ret->loc_hash_memory = objalloc_create ();
+ if (!ret->loc_hash_table || !ret->loc_hash_memory)
+ {
+ elfNN_aarch64_link_hash_table_free (abfd);
+ return NULL;
+ }
+ ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
- bfd_set_error (bfd_error_bad_value);
- return NULL;
+ return &ret->root.root;
}
-static void
-elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
- Elf_Internal_Rela *elf_reloc)
+static bfd_boolean
+aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
+ bfd_vma offset, bfd_vma value)
{
- unsigned int r_type;
+ reloc_howto_type *howto;
+ bfd_vma place;
- r_type = ELFNN_R_TYPE (elf_reloc->r_info);
- bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type);
+ howto = elfNN_aarch64_howto_from_type (r_type);
+ place = (input_section->output_section->vma + input_section->output_offset
+ + offset);
+
+ r_type = elfNN_aarch64_bfd_reloc_from_type (r_type);
+ value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
+ return _bfd_aarch64_elf_put_addend (input_bfd,
+ input_section->contents + offset, r_type,
+ howto, value);
}
-static reloc_howto_type *
-elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
+static enum elf_aarch64_stub_type
+aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
{
- reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
-
- if (howto != NULL)
- return howto;
-
- bfd_set_error (bfd_error_bad_value);
- return NULL;
+ if (aarch64_valid_for_adrp_p (value, place))
+ return aarch64_stub_adrp_branch;
+ return aarch64_stub_long_branch;
}
-static reloc_howto_type *
-elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
-{
- unsigned int i;
+/* Determine the type of stub needed, if any, for a call. */
- for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
- if (elfNN_aarch64_howto_table[i].name != NULL
- && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
- return &elfNN_aarch64_howto_table[i];
+static enum elf_aarch64_stub_type
+aarch64_type_of_stub (struct bfd_link_info *info,
+ asection *input_sec,
+ const Elf_Internal_Rela *rel,
+ asection *sym_sec,
+ unsigned char st_type,
+ struct elf_aarch64_link_hash_entry *hash,
+ bfd_vma destination)
+{
+ bfd_vma location;
+ bfd_signed_vma branch_offset;
+ unsigned int r_type;
+ struct elf_aarch64_link_hash_table *globals;
+ enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
+ bfd_boolean via_plt_p;
- return NULL;
-}
+ if (st_type != STT_FUNC
+ && (sym_sec != bfd_abs_section_ptr))
+ return stub_type;
-#define TARGET_LITTLE_SYM bfd_elfNN_littleaarch64_vec
-#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
-#define TARGET_BIG_SYM bfd_elfNN_bigaarch64_vec
-#define TARGET_BIG_NAME "elfNN-bigaarch64"
+ globals = elf_aarch64_hash_table (info);
+ via_plt_p = (globals->root.splt != NULL && hash != NULL
+ && hash->root.plt.offset != (bfd_vma) - 1);
+ /* Make sure call to plt stub can fit into the branch range. */
+ if (via_plt_p)
+ destination = (globals->root.splt->output_section->vma
+ + globals->root.splt->output_offset
+ + hash->root.plt.offset);
-/* The linker script knows the section names for placement.
- The entry_names are used to do simple name mangling on the stubs.
- Given a function name, and its type, the stub can be found. The
- name can be changed. The only requirement is the %s be present. */
-#define STUB_ENTRY_NAME "__%s_veneer"
+ /* Determine where the call point is. */
+ location = (input_sec->output_offset
+ + input_sec->output_section->vma + rel->r_offset);
-/* The name of the dynamic interpreter. This is put in the .interp
- section. */
-#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+ branch_offset = (bfd_signed_vma) (destination - location);
-#define AARCH64_MAX_FWD_BRANCH_OFFSET \
- (((1 << 25) - 1) << 2)
-#define AARCH64_MAX_BWD_BRANCH_OFFSET \
- (-((1 << 25) << 2))
+ r_type = ELFNN_R_TYPE (rel->r_info);
-#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
-#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
+ /* We don't want to redirect any old unconditional jump in this way,
+ only one which is being used for a sibcall, where it is
+ acceptable for the IP0 and IP1 registers to be clobbered. */
+ if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
+ && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
+ || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
+ {
+ stub_type = aarch64_stub_long_branch;
+ }
-static int
-aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
-{
- bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
- return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
+ return stub_type;
}
-static int
-aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
-{
- bfd_signed_vma offset = (bfd_signed_vma) (value - place);
- return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
- && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
-}
+/* Build a name for an entry in the stub hash table. */
-static const uint32_t aarch64_adrp_branch_stub [] =
+static char *
+elfNN_aarch64_stub_name (const asection *input_section,
+ const asection *sym_sec,
+ const struct elf_aarch64_link_hash_entry *hash,
+ const Elf_Internal_Rela *rel)
{
- 0x90000010, /* adrp ip0, X */
- /* R_AARCH64_ADR_HI21_PCREL(X) */
- 0x91000210, /* add ip0, ip0, :lo12:X */
- /* R_AARCH64_ADD_ABS_LO12_NC(X) */
- 0xd61f0200, /* br ip0 */
-};
+ char *stub_name;
+ bfd_size_type len;
-static const uint32_t aarch64_long_branch_stub[] =
-{
-#if ARCH_SIZE == 64
- 0x58000090, /* ldr ip0, 1f */
-#else
- 0x18000090, /* ldr wip0, 1f */
-#endif
- 0x10000011, /* adr ip1, #0 */
- 0x8b110210, /* add ip0, ip0, ip1 */
- 0xd61f0200, /* br ip0 */
- 0x00000000, /* 1: .xword or .word
- R_AARCH64_PRELNN(X) + 12
- */
- 0x00000000,
-};
+ if (hash)
+ {
+ len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name != NULL)
+ snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
+ (unsigned int) input_section->id,
+ hash->root.root.root.string,
+ rel->r_addend);
+ }
+ else
+ {
+ len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name != NULL)
+ snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
+ (unsigned int) input_section->id,
+ (unsigned int) sym_sec->id,
+ (unsigned int) ELFNN_R_SYM (rel->r_info),
+ rel->r_addend);
+ }
-/* Section name for stubs is the associated section name plus this
- string. */
-#define STUB_SUFFIX ".stub"
+ return stub_name;
+}
-enum elf_aarch64_stub_type
-{
- aarch64_stub_none,
- aarch64_stub_adrp_branch,
- aarch64_stub_long_branch,
-};
+/* Look up an entry in the stub hash. Stub entries are cached because
+ creating the stub name takes a bit of time. */
-struct elf_aarch64_stub_hash_entry
+static struct elf_aarch64_stub_hash_entry *
+elfNN_aarch64_get_stub_entry (const asection *input_section,
+ const asection *sym_sec,
+ struct elf_link_hash_entry *hash,
+ const Elf_Internal_Rela *rel,
+ struct elf_aarch64_link_hash_table *htab)
{
- /* Base hash table entry structure. */
- struct bfd_hash_entry root;
-
- /* The stub section. */
- asection *stub_sec;
-
- /* Offset within stub_sec of the beginning of this stub. */
- bfd_vma stub_offset;
-
- /* Given the symbol's value and its section we can determine its final
- value when building the stubs (so the stub knows where to jump). */
- bfd_vma target_value;
- asection *target_section;
-
- enum elf_aarch64_stub_type stub_type;
-
- /* The symbol table entry, if any, that this was derived from. */
- struct elf_aarch64_link_hash_entry *h;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ struct elf_aarch64_link_hash_entry *h =
+ (struct elf_aarch64_link_hash_entry *) hash;
+ const asection *id_sec;
- /* Destination symbol type */
- unsigned char st_type;
+ if ((input_section->flags & SEC_CODE) == 0)
+ return NULL;
- /* Where this stub is being called from, or, in the case of combined
- stub sections, the first input section in the group. */
- asection *id_sec;
+ /* If this input section is part of a group of sections sharing one
+ stub section, then use the id of the first section in the group.
+ Stub names need to include a section id, as there may well be
+ more than one stub used to reach say, printf, and we need to
+ distinguish between them. */
+ id_sec = htab->stub_group[input_section->id].link_sec;
- /* The name for the local symbol at the start of this stub. The
- stub name in the hash table has to be unique; this does not, so
- it can be friendlier. */
- char *output_name;
-};
+ if (h != NULL && h->stub_cache != NULL
+ && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
+ {
+ stub_entry = h->stub_cache;
+ }
+ else
+ {
+ char *stub_name;
-/* Used to build a map of a section. This is required for mixed-endian
- code/data. */
+ stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
+ if (stub_name == NULL)
+ return NULL;
-typedef struct elf_elf_section_map
-{
- bfd_vma vma;
- char type;
-}
-elf_aarch64_section_map;
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
+ stub_name, FALSE, FALSE);
+ if (h != NULL)
+ h->stub_cache = stub_entry;
+ free (stub_name);
+ }
-typedef struct _aarch64_elf_section_data
-{
- struct bfd_elf_section_data elf;
- unsigned int mapcount;
- unsigned int mapsize;
- elf_aarch64_section_map *map;
+ return stub_entry;
}
-_aarch64_elf_section_data;
-#define elf_aarch64_section_data(sec) \
- ((_aarch64_elf_section_data *) elf_section_data (sec))
-/* The size of the thread control block. */
-#define TCB_SIZE 16
+/* Create a stub section. */
-struct elf_aarch64_local_symbol
+static asection *
+_bfd_aarch64_create_stub_section (asection *section,
+ struct elf_aarch64_link_hash_table *htab)
{
- unsigned int got_type;
- bfd_signed_vma got_refcount;
- bfd_vma got_offset;
-
- /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
- offset is from the end of the jump table and reserved entries
- within the PLTGOT.
+ size_t namelen;
+ bfd_size_type len;
+ char *s_name;
- The magic value (bfd_vma) -1 indicates that an offset has not be
- allocated. */
- bfd_vma tlsdesc_got_jump_table_offset;
-};
+ namelen = strlen (section->name);
+ len = namelen + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (htab->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
-struct elf_aarch64_obj_tdata
-{
- struct elf_obj_tdata root;
+ memcpy (s_name, section->name, namelen);
+ memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
+ return (*htab->add_stub_section) (s_name, section);
+}
- /* local symbol descriptors */
- struct elf_aarch64_local_symbol *locals;
- /* Zero to warn when linking objects with incompatible enum sizes. */
- int no_enum_size_warning;
+/* Find or create a stub section for a link section.
- /* Zero to warn when linking objects with incompatible wchar_t sizes. */
- int no_wchar_size_warning;
-};
+ Fix or create the stub section used to collect stubs attached to
+ the specified link section. */
-#define elf_aarch64_tdata(bfd) \
- ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
+static asection *
+_bfd_aarch64_get_stub_for_link_section (asection *link_section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ if (htab->stub_group[link_section->id].stub_sec == NULL)
+ htab->stub_group[link_section->id].stub_sec
+ = _bfd_aarch64_create_stub_section (link_section, htab);
+ return htab->stub_group[link_section->id].stub_sec;
+}
-#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
-#define is_aarch64_elf(bfd) \
- (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
- && elf_tdata (bfd) != NULL \
- && elf_object_id (bfd) == AARCH64_ELF_DATA)
+/* Find or create a stub section in the stub group for an input
+ section. */
-static bfd_boolean
-elfNN_aarch64_mkobject (bfd *abfd)
+static asection *
+_bfd_aarch64_create_or_find_stub_sec (asection *section,
+ struct elf_aarch64_link_hash_table *htab)
{
- return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
- AARCH64_ELF_DATA);
+ asection *link_sec = htab->stub_group[section->id].link_sec;
+ return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
}
-#define elf_aarch64_hash_entry(ent) \
- ((struct elf_aarch64_link_hash_entry *)(ent))
-
-#define GOT_UNKNOWN 0
-#define GOT_NORMAL 1
-#define GOT_TLS_GD 2
-#define GOT_TLS_IE 4
-#define GOT_TLSDESC_GD 8
-#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
+/* Add a new stub entry in the stub group associated with an input
+ section to the stub hash. Not all fields of the new stub entry are
+ initialised. */
-/* AArch64 ELF linker hash entry. */
-struct elf_aarch64_link_hash_entry
+static struct elf_aarch64_stub_hash_entry *
+_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
+ asection *section,
+ struct elf_aarch64_link_hash_table *htab)
{
- struct elf_link_hash_entry root;
-
- /* Track dynamic relocs copied for this symbol. */
- struct elf_dyn_relocs *dyn_relocs;
+ asection *link_sec;
+ asection *stub_sec;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
- /* Since PLT entries have variable size, we need to record the
- index into .got.plt instead of recomputing it from the PLT
- offset. */
- bfd_signed_vma plt_got_offset;
+ link_sec = htab->stub_group[section->id].link_sec;
+ stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
- /* Bit mask representing the type of GOT entry(s) if any required by
- this symbol. */
- unsigned int got_type;
+ /* Enter this entry into the linker stub hash table. */
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ TRUE, FALSE);
+ if (stub_entry == NULL)
+ {
+ (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
+ section->owner, stub_name);
+ return NULL;
+ }
- /* A pointer to the most recently used stub hash entry against this
- symbol. */
- struct elf_aarch64_stub_hash_entry *stub_cache;
+ stub_entry->stub_sec = stub_sec;
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_sec;
- /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
- is from the end of the jump table and reserved entries within the PLTGOT.
+ return stub_entry;
+}
- The magic value (bfd_vma) -1 indicates that an offset has not
- be allocated. */
- bfd_vma tlsdesc_got_jump_table_offset;
-};
+/* Add a new stub entry in the final stub section to the stub hash.
+ Not all fields of the new stub entry are initialised. */
-static unsigned int
-elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
- bfd *abfd,
- unsigned long r_symndx)
+static struct elf_aarch64_stub_hash_entry *
+_bfd_aarch64_add_stub_entry_after (const char *stub_name,
+ asection *link_section,
+ struct elf_aarch64_link_hash_table *htab)
{
- if (h)
- return elf_aarch64_hash_entry (h)->got_type;
+ asection *stub_sec;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
- if (! elf_aarch64_locals (abfd))
- return GOT_UNKNOWN;
+ stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ TRUE, FALSE);
+ if (stub_entry == NULL)
+ {
+ (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name);
+ return NULL;
+ }
- return elf_aarch64_locals (abfd)[r_symndx].got_type;
-}
+ stub_entry->stub_sec = stub_sec;
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_section;
-/* Get the AArch64 elf linker hash table from a link_info structure. */
-#define elf_aarch64_hash_table(info) \
- ((struct elf_aarch64_link_hash_table *) ((info)->hash))
+ return stub_entry;
+}
-#define aarch64_stub_hash_lookup(table, string, create, copy) \
- ((struct elf_aarch64_stub_hash_entry *) \
- bfd_hash_lookup ((table), (string), (create), (copy)))
-/* AArch64 ELF linker hash table. */
-struct elf_aarch64_link_hash_table
+static bfd_boolean
+aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg ATTRIBUTE_UNUSED)
{
- /* The main hash table. */
- struct elf_link_hash_table root;
-
- /* Nonzero to force PIC branch veneers. */
- int pic_veneer;
-
- /* The number of bytes in the initial entry in the PLT. */
- bfd_size_type plt_header_size;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ asection *stub_sec;
+ bfd *stub_bfd;
+ bfd_byte *loc;
+ bfd_vma sym_value;
+ bfd_vma veneered_insn_loc;
+ bfd_vma veneer_entry_loc;
+ bfd_signed_vma branch_offset = 0;
+ unsigned int template_size;
+ const uint32_t *template;
+ unsigned int i;
- /* The number of bytes in the subsequent PLT etries. */
- bfd_size_type plt_entry_size;
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
- /* Short-cuts to get to dynamic linker sections. */
- asection *sdynbss;
- asection *srelbss;
+ stub_sec = stub_entry->stub_sec;
- /* Small local sym cache. */
- struct sym_cache sym_cache;
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = stub_sec->size;
+ loc = stub_sec->contents + stub_entry->stub_offset;
- /* For convenience in allocate_dynrelocs. */
- bfd *obfd;
+ stub_bfd = stub_sec->owner;
- /* The amount of space used by the reserved portion of the sgotplt
- section, plus whatever space is used by the jump slots. */
- bfd_vma sgotplt_jump_table_size;
+ /* This is the address of the stub destination. */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
- /* The stub hash table. */
- struct bfd_hash_table stub_hash_table;
+ if (stub_entry->stub_type == aarch64_stub_long_branch)
+ {
+ bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
+ + stub_sec->output_offset);
- /* Linker stub bfd. */
- bfd *stub_bfd;
+ /* See if we can relax the stub. */
+ if (aarch64_valid_for_adrp_p (sym_value, place))
+ stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
+ }
- /* Linker call-backs. */
- asection *(*add_stub_section) (const char *, asection *);
- void (*layout_sections_again) (void);
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ template = aarch64_adrp_branch_stub;
+ template_size = sizeof (aarch64_adrp_branch_stub);
+ break;
+ case aarch64_stub_long_branch:
+ template = aarch64_long_branch_stub;
+ template_size = sizeof (aarch64_long_branch_stub);
+ break;
+ case aarch64_stub_erratum_835769_veneer:
+ template = aarch64_erratum_835769_stub;
+ template_size = sizeof (aarch64_erratum_835769_stub);
+ break;
+ case aarch64_stub_erratum_843419_veneer:
+ template = aarch64_erratum_843419_stub;
+ template_size = sizeof (aarch64_erratum_843419_stub);
+ break;
+ default:
+ abort ();
+ }
- /* Array to keep track of which stub sections have been created, and
- information on stub grouping. */
- struct map_stub
- {
- /* This is the section to which stubs in the group will be
- attached. */
- asection *link_sec;
- /* The stub section. */
- asection *stub_sec;
- } *stub_group;
+ for (i = 0; i < (template_size / sizeof template[0]); i++)
+ {
+ bfd_putl32 (template[i], loc);
+ loc += 4;
+ }
- /* Assorted information used by elfNN_aarch64_size_stubs. */
- unsigned int bfd_count;
- int top_index;
- asection **input_list;
+ template_size = (template_size + 7) & ~7;
+ stub_sec->size += template_size;
- /* The offset into splt of the PLT entry for the TLS descriptor
- resolver. Special values are 0, if not necessary (or not found
- to be necessary yet), and -1 if needed but not determined
- yet. */
- bfd_vma tlsdesc_plt;
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
+ stub_entry->stub_offset, sym_value))
+ /* The stub would not have been relaxed if the offset was out
+ of range. */
+ BFD_FAIL ();
- /* The GOT offset for the lazy trampoline. Communicated to the
- loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
- indicates an offset is not allocated. */
- bfd_vma dt_tlsdesc_got;
-};
+ if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 4, sym_value))
+ BFD_FAIL ();
+ break;
-/* Create an entry in an AArch64 ELF linker hash table. */
+ case aarch64_stub_long_branch:
+ /* We want the value relative to the address 12 bytes back from the
+ value itself. */
+ if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 16, sym_value + 12))
+ BFD_FAIL ();
+ break;
-static struct bfd_hash_entry *
-elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
-{
- struct elf_aarch64_link_hash_entry *ret =
- (struct elf_aarch64_link_hash_entry *) entry;
+ case aarch64_stub_erratum_835769_veneer:
+ veneered_insn_loc = stub_entry->target_section->output_section->vma
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_value;
+ veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_offset;
+ branch_offset = veneered_insn_loc - veneer_entry_loc;
+ branch_offset >>= 2;
+ branch_offset &= 0x3ffffff;
+ bfd_putl32 (stub_entry->veneered_insn,
+ stub_sec->contents + stub_entry->stub_offset);
+ bfd_putl32 (template[1] | branch_offset,
+ stub_sec->contents + stub_entry->stub_offset + 4);
+ break;
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (ret == NULL)
- ret = bfd_hash_allocate (table,
- sizeof (struct elf_aarch64_link_hash_entry));
- if (ret == NULL)
- return (struct bfd_hash_entry *) ret;
+ case aarch64_stub_erratum_843419_veneer:
+ if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 4, sym_value + 4))
+ BFD_FAIL ();
+ break;
- /* Call the allocation method of the superclass. */
- ret = ((struct elf_aarch64_link_hash_entry *)
- _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
- table, string));
- if (ret != NULL)
- {
- ret->dyn_relocs = NULL;
- ret->got_type = GOT_UNKNOWN;
- ret->plt_got_offset = (bfd_vma) - 1;
- ret->stub_cache = NULL;
- ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
+ default:
+ abort ();
}
- return (struct bfd_hash_entry *) ret;
+ return TRUE;
}
-/* Initialize an entry in the stub hash table. */
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes. */
-static struct bfd_hash_entry *
-stub_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table, const char *string)
+static bfd_boolean
+aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg ATTRIBUTE_UNUSED)
{
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry = bfd_hash_allocate (table,
- sizeof (struct
- elf_aarch64_stub_hash_entry));
- if (entry == NULL)
- return entry;
- }
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ int size;
- /* Call the allocation method of the superclass. */
- entry = bfd_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct elf_aarch64_stub_hash_entry *eh;
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
- /* Initialize the local fields. */
- eh = (struct elf_aarch64_stub_hash_entry *) entry;
- eh->stub_sec = NULL;
- eh->stub_offset = 0;
- eh->target_value = 0;
- eh->target_section = NULL;
- eh->stub_type = aarch64_stub_none;
- eh->h = NULL;
- eh->id_sec = NULL;
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ size = sizeof (aarch64_adrp_branch_stub);
+ break;
+ case aarch64_stub_long_branch:
+ size = sizeof (aarch64_long_branch_stub);
+ break;
+ case aarch64_stub_erratum_835769_veneer:
+ size = sizeof (aarch64_erratum_835769_stub);
+ break;
+ case aarch64_stub_erratum_843419_veneer:
+ size = sizeof (aarch64_erratum_843419_stub);
+ break;
+ default:
+ abort ();
}
- return entry;
+ size = (size + 7) & ~7;
+ stub_entry->stub_sec->size += size;
+ return TRUE;
}
+/* External entry points for sizing and building linker stubs. */
-/* Copy the extra info we tack onto an elf_link_hash_entry. */
+/* Set up various things so that we can make a list of input sections
+ for each output section included in the link. Returns -1 on error,
+ 0 when no stubs will be needed, and 1 on success. */
-static void
-elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
+int
+elfNN_aarch64_setup_section_lists (bfd *output_bfd,
+ struct bfd_link_info *info)
{
- struct elf_aarch64_link_hash_entry *edir, *eind;
+ bfd *input_bfd;
+ unsigned int bfd_count;
+ unsigned int top_id, top_index;
+ asection *section;
+ asection **input_list, **list;
+ bfd_size_type amt;
+ struct elf_aarch64_link_hash_table *htab =
+ elf_aarch64_hash_table (info);
- edir = (struct elf_aarch64_link_hash_entry *) dir;
- eind = (struct elf_aarch64_link_hash_entry *) ind;
+ if (!is_elf_hash_table (htab))
+ return 0;
- if (eind->dyn_relocs != NULL)
+ /* Count the number of input BFDs and find the top input section id. */
+ for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
+ input_bfd != NULL; input_bfd = input_bfd->link.next)
{
- if (edir->dyn_relocs != NULL)
+ bfd_count += 1;
+ for (section = input_bfd->sections;
+ section != NULL; section = section->next)
{
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
- /* Add reloc counts against the indirect sym to the direct sym
- list. Merge any entries against the same section. */
- for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
- {
- struct elf_dyn_relocs *q;
-
- for (q = edir->dyn_relocs; q != NULL; q = q->next)
- if (q->sec == p->sec)
- {
- q->pc_count += p->pc_count;
- q->count += p->count;
- *pp = p->next;
- break;
- }
- if (q == NULL)
- pp = &p->next;
- }
- *pp = edir->dyn_relocs;
+ if (top_id < section->id)
+ top_id = section->id;
}
+ }
+ htab->bfd_count = bfd_count;
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
+ amt = sizeof (struct map_stub) * (top_id + 1);
+ htab->stub_group = bfd_zmalloc (amt);
+ if (htab->stub_group == NULL)
+ return -1;
+
+ /* We can't use output_bfd->section_count here to find the top output
+ section index as some sections may have been removed, and
+ _bfd_strip_section_from_output doesn't renumber the indices. */
+ for (section = output_bfd->sections, top_index = 0;
+ section != NULL; section = section->next)
+ {
+ if (top_index < section->index)
+ top_index = section->index;
}
- if (ind->root.type == bfd_link_hash_indirect)
+ htab->top_index = top_index;
+ amt = sizeof (asection *) * (top_index + 1);
+ input_list = bfd_malloc (amt);
+ htab->input_list = input_list;
+ if (input_list == NULL)
+ return -1;
+
+ /* For sections we aren't interested in, mark their entries with a
+ value we can check later. */
+ list = input_list + top_index;
+ do
+ *list = bfd_abs_section_ptr;
+ while (list-- != input_list);
+
+ for (section = output_bfd->sections;
+ section != NULL; section = section->next)
{
- /* Copy over PLT info. */
- if (dir->got.refcount <= 0)
- {
- edir->got_type = eind->got_type;
- eind->got_type = GOT_UNKNOWN;
- }
+ if ((section->flags & SEC_CODE) != 0)
+ input_list[section->index] = NULL;
}
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+ return 1;
}
-/* Create an AArch64 elf linker hash table. */
+/* Used by elfNN_aarch64_next_input_section and group_sections. */
+#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
-static struct bfd_link_hash_table *
-elfNN_aarch64_link_hash_table_create (bfd *abfd)
-{
- struct elf_aarch64_link_hash_table *ret;
- bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
+/* The linker repeatedly calls this function for each input section,
+ in the order that input sections are linked into output sections.
+ Build lists of input sections to determine groupings between which
+ we may insert linker stubs. */
- ret = bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
+void
+elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
+{
+ struct elf_aarch64_link_hash_table *htab =
+ elf_aarch64_hash_table (info);
- if (!_bfd_elf_link_hash_table_init
- (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
- sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
+ if (isec->output_section->index <= htab->top_index)
{
- free (ret);
- return NULL;
- }
-
- ret->plt_header_size = PLT_ENTRY_SIZE;
- ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
- ret->obfd = abfd;
- ret->dt_tlsdesc_got = (bfd_vma) - 1;
+ asection **list = htab->input_list + isec->output_section->index;
- if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
- sizeof (struct elf_aarch64_stub_hash_entry)))
- {
- free (ret);
- return NULL;
+ if (*list != bfd_abs_section_ptr)
+ {
+ /* Steal the link_sec pointer for our list. */
+ /* This happens to make the list in reverse order,
+ which is what we want. */
+ PREV_SEC (isec) = *list;
+ *list = isec;
+ }
}
-
- return &ret->root.root;
}
-/* Free the derived linker hash table. */
+/* See whether we can group stub sections together. Grouping stub
+ sections may result in fewer stubs. More importantly, we need to
+ put all .init* and .fini* stubs at the beginning of the .init or
+ .fini output sections respectively, because glibc splits the
+ _init and _fini functions into multiple parts. Putting a stub in
+ the middle of a function is not a good idea. */
static void
-elfNN_aarch64_hash_table_free (struct bfd_link_hash_table *hash)
-{
- struct elf_aarch64_link_hash_table *ret
- = (struct elf_aarch64_link_hash_table *) hash;
-
- bfd_hash_table_free (&ret->stub_hash_table);
- _bfd_elf_link_hash_table_free (hash);
-}
-
-static bfd_boolean
-aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
- bfd_vma offset, bfd_vma value)
+group_sections (struct elf_aarch64_link_hash_table *htab,
+ bfd_size_type stub_group_size,
+ bfd_boolean stubs_always_before_branch)
{
- reloc_howto_type *howto;
- bfd_vma place;
-
- howto = elfNN_aarch64_howto_from_type (r_type);
- place = (input_section->output_section->vma + input_section->output_offset
- + offset);
+ asection **list = htab->input_list + htab->top_index;
- r_type = elfNN_aarch64_bfd_reloc_from_type (r_type);
- value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
- return _bfd_aarch64_elf_put_addend (input_bfd,
- input_section->contents + offset, r_type,
- howto, value);
-}
+ do
+ {
+ asection *tail = *list;
-static enum elf_aarch64_stub_type
-aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
-{
- if (aarch64_valid_for_adrp_p (value, place))
- return aarch64_stub_adrp_branch;
- return aarch64_stub_long_branch;
-}
+ if (tail == bfd_abs_section_ptr)
+ continue;
-/* Determine the type of stub needed, if any, for a call. */
+ while (tail != NULL)
+ {
+ asection *curr;
+ asection *prev;
+ bfd_size_type total;
-static enum elf_aarch64_stub_type
-aarch64_type_of_stub (struct bfd_link_info *info,
- asection *input_sec,
- const Elf_Internal_Rela *rel,
- unsigned char st_type,
- struct elf_aarch64_link_hash_entry *hash,
- bfd_vma destination)
-{
- bfd_vma location;
- bfd_signed_vma branch_offset;
- unsigned int r_type;
- struct elf_aarch64_link_hash_table *globals;
- enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
- bfd_boolean via_plt_p;
+ curr = tail;
+ total = tail->size;
+ while ((prev = PREV_SEC (curr)) != NULL
+ && ((total += curr->output_offset - prev->output_offset)
+ < stub_group_size))
+ curr = prev;
- if (st_type != STT_FUNC)
- return stub_type;
+ /* OK, the size from the start of CURR to the end is less
+ than stub_group_size and thus can be handled by one stub
+ section. (Or the tail section is itself larger than
+ stub_group_size, in which case we may be toast.)
+ We should really be keeping track of the total size of
+ stubs added here, as stubs contribute to the final output
+ section size. */
+ do
+ {
+ prev = PREV_SEC (tail);
+ /* Set up this stub group. */
+ htab->stub_group[tail->id].link_sec = curr;
+ }
+ while (tail != curr && (tail = prev) != NULL);
- globals = elf_aarch64_hash_table (info);
- via_plt_p = (globals->root.splt != NULL && hash != NULL
- && hash->root.plt.offset != (bfd_vma) - 1);
+ /* But wait, there's more! Input sections up to stub_group_size
+ bytes before the stub section can be handled by it too. */
+ if (!stubs_always_before_branch)
+ {
+ total = 0;
+ while (prev != NULL
+ && ((total += tail->output_offset - prev->output_offset)
+ < stub_group_size))
+ {
+ tail = prev;
+ prev = PREV_SEC (tail);
+ htab->stub_group[tail->id].link_sec = curr;
+ }
+ }
+ tail = prev;
+ }
+ }
+ while (list-- != htab->input_list);
- if (via_plt_p)
- return stub_type;
+ free (htab->input_list);
+}
- /* Determine where the call point is. */
- location = (input_sec->output_offset
- + input_sec->output_section->vma + rel->r_offset);
+#undef PREV_SEC
- branch_offset = (bfd_signed_vma) (destination - location);
+#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
+
+#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
+#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
+#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
+#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
+#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
+#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
+
+#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
+#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
+#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
+#define AARCH64_ZR 0x1f
+
+/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
+ LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
+
+#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
+#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
+#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
+#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
+#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
+#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
+#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
+#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
+#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
+#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
+#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
+#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
+#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
+#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
+#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
+#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
+#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
+#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
+
+/* Classify an INSN if it is indeed a load/store.
+
+ Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
+
+ For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
+ is set equal to RT.
+
+ For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned.
+
+ */
- r_type = ELFNN_R_TYPE (rel->r_info);
+static bfd_boolean
+aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
+ bfd_boolean *pair, bfd_boolean *load)
+{
+ uint32_t opcode;
+ unsigned int r;
+ uint32_t opc = 0;
+ uint32_t v = 0;
+ uint32_t opc_v = 0;
+
+ /* Bail out quickly if INSN doesn't fall into the the load-store
+ encoding space. */
+ if (!AARCH64_LDST (insn))
+ return FALSE;
- /* We don't want to redirect any old unconditional jump in this way,
- only one which is being used for a sibcall, where it is
- acceptable for the IP0 and IP1 registers to be clobbered. */
- if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
- && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
- || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
+ *pair = FALSE;
+ *load = FALSE;
+ if (AARCH64_LDST_EX (insn))
{
- stub_type = aarch64_stub_long_branch;
+ *rt = AARCH64_RT (insn);
+ *rt2 = *rt;
+ if (AARCH64_BIT (insn, 21) == 1)
+ {
+ *pair = TRUE;
+ *rt2 = AARCH64_RT2 (insn);
+ }
+ *load = AARCH64_LD (insn);
+ return TRUE;
+ }
+ else if (AARCH64_LDST_NAP (insn)
+ || AARCH64_LDSTP_PI (insn)
+ || AARCH64_LDSTP_O (insn)
+ || AARCH64_LDSTP_PRE (insn))
+ {
+ *pair = TRUE;
+ *rt = AARCH64_RT (insn);
+ *rt2 = AARCH64_RT2 (insn);
+ *load = AARCH64_LD (insn);
+ return TRUE;
}
+ else if (AARCH64_LDST_PCREL (insn)
+ || AARCH64_LDST_UI (insn)
+ || AARCH64_LDST_PIIMM (insn)
+ || AARCH64_LDST_U (insn)
+ || AARCH64_LDST_PREIMM (insn)
+ || AARCH64_LDST_RO (insn)
+ || AARCH64_LDST_UIMM (insn))
+ {
+ *rt = AARCH64_RT (insn);
+ *rt2 = *rt;
+ if (AARCH64_LDST_PCREL (insn))
+ *load = TRUE;
+ opc = AARCH64_BITS (insn, 22, 2);
+ v = AARCH64_BIT (insn, 26);
+ opc_v = opc | (v << 2);
+ *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
+ || opc_v == 5 || opc_v == 7);
+ return TRUE;
+ }
+ else if (AARCH64_LDST_SIMD_M (insn)
+ || AARCH64_LDST_SIMD_M_PI (insn))
+ {
+ *rt = AARCH64_RT (insn);
+ *load = AARCH64_BIT (insn, 22);
+ opcode = (insn >> 12) & 0xf;
+ switch (opcode)
+ {
+ case 0:
+ case 2:
+ *rt2 = *rt + 3;
+ break;
- return stub_type;
-}
+ case 4:
+ case 6:
+ *rt2 = *rt + 2;
+ break;
-/* Build a name for an entry in the stub hash table. */
+ case 7:
+ *rt2 = *rt;
+ break;
-static char *
-elfNN_aarch64_stub_name (const asection *input_section,
- const asection *sym_sec,
- const struct elf_aarch64_link_hash_entry *hash,
- const Elf_Internal_Rela *rel)
-{
- char *stub_name;
- bfd_size_type len;
+ case 8:
+ case 10:
+ *rt2 = *rt + 1;
+ break;
- if (hash)
- {
- len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
- stub_name = bfd_malloc (len);
- if (stub_name != NULL)
- snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
- (unsigned int) input_section->id,
- hash->root.root.root.string,
- rel->r_addend);
+ default:
+ return FALSE;
+ }
+ return TRUE;
}
- else
+ else if (AARCH64_LDST_SIMD_S (insn)
+ || AARCH64_LDST_SIMD_S_PI (insn))
{
- len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
- stub_name = bfd_malloc (len);
- if (stub_name != NULL)
- snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
- (unsigned int) input_section->id,
- (unsigned int) sym_sec->id,
- (unsigned int) ELFNN_R_SYM (rel->r_info),
- rel->r_addend);
+ *rt = AARCH64_RT (insn);
+ r = (insn >> 21) & 1;
+ *load = AARCH64_BIT (insn, 22);
+ opcode = (insn >> 13) & 0x7;
+ switch (opcode)
+ {
+ case 0:
+ case 2:
+ case 4:
+ *rt2 = *rt + r;
+ break;
+
+ case 1:
+ case 3:
+ case 5:
+ *rt2 = *rt + (r == 0 ? 2 : 3);
+ break;
+
+ case 6:
+ *rt2 = *rt + r;
+ break;
+
+ case 7:
+ *rt2 = *rt + (r == 0 ? 2 : 3);
+ break;
+
+ default:
+ return FALSE;
+ }
+ return TRUE;
}
- return stub_name;
+ return FALSE;
}
-/* Look up an entry in the stub hash. Stub entries are cached because
- creating the stub name takes a bit of time. */
+/* Return TRUE if INSN is multiply-accumulate. */
-static struct elf_aarch64_stub_hash_entry *
-elfNN_aarch64_get_stub_entry (const asection *input_section,
- const asection *sym_sec,
- struct elf_link_hash_entry *hash,
- const Elf_Internal_Rela *rel,
- struct elf_aarch64_link_hash_table *htab)
+static bfd_boolean
+aarch64_mlxl_p (uint32_t insn)
{
- struct elf_aarch64_stub_hash_entry *stub_entry;
- struct elf_aarch64_link_hash_entry *h =
- (struct elf_aarch64_link_hash_entry *) hash;
- const asection *id_sec;
+ uint32_t op31 = AARCH64_OP31 (insn);
- if ((input_section->flags & SEC_CODE) == 0)
- return NULL;
+ if (AARCH64_MAC (insn)
+ && (op31 == 0 || op31 == 1 || op31 == 5)
+ /* Exclude MUL instructions which are encoded as a multiple accumulate
+ with RA = XZR. */
+ && AARCH64_RA (insn) != AARCH64_ZR)
+ return TRUE;
- /* If this input section is part of a group of sections sharing one
- stub section, then use the id of the first section in the group.
- Stub names need to include a section id, as there may well be
- more than one stub used to reach say, printf, and we need to
- distinguish between them. */
- id_sec = htab->stub_group[input_section->id].link_sec;
+ return FALSE;
+}
- if (h != NULL && h->stub_cache != NULL
- && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
- {
- stub_entry = h->stub_cache;
- }
- else
+/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
+ it is possible for a 64-bit multiply-accumulate instruction to generate an
+ incorrect result. The details are quite complex and hard to
+ determine statically, since branches in the code may exist in some
+ circumstances, but all cases end with a memory (load, store, or
+ prefetch) instruction followed immediately by the multiply-accumulate
+ operation. We employ a linker patching technique, by moving the potentially
+ affected multiply-accumulate instruction into a patch region and replacing
+ the original instruction with a branch to the patch. This function checks
+ if INSN_1 is the memory operation followed by a multiply-accumulate
+ operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
+ if INSN_1 and INSN_2 are safe. */
+
+static bfd_boolean
+aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
+{
+ uint32_t rt;
+ uint32_t rt2;
+ uint32_t rn;
+ uint32_t rm;
+ uint32_t ra;
+ bfd_boolean pair;
+ bfd_boolean load;
+
+ if (aarch64_mlxl_p (insn_2)
+ && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
{
- char *stub_name;
+ /* Any SIMD memory op is independent of the subsequent MLA
+ by definition of the erratum. */
+ if (AARCH64_BIT (insn_1, 26))
+ return TRUE;
- stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
- if (stub_name == NULL)
- return NULL;
+ /* If not SIMD, check for integer memory ops and MLA relationship. */
+ rn = AARCH64_RN (insn_2);
+ ra = AARCH64_RA (insn_2);
+ rm = AARCH64_RM (insn_2);
- stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
- stub_name, FALSE, FALSE);
- if (h != NULL)
- h->stub_cache = stub_entry;
+ /* If this is a load and there's a true(RAW) dependency, we are safe
+ and this is not an erratum sequence. */
+ if (load &&
+ (rt == rn || rt == rm || rt == ra
+ || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
+ return FALSE;
- free (stub_name);
+ /* We conservatively put out stubs for all other cases (including
+ writebacks). */
+ return TRUE;
}
- return stub_entry;
+ return FALSE;
}
-/* Add a new stub entry to the stub hash. Not all fields of the new
- stub entry are initialised. */
+/* Used to order a list of mapping symbols by address. */
-static struct elf_aarch64_stub_hash_entry *
-elfNN_aarch64_add_stub (const char *stub_name,
- asection *section,
- struct elf_aarch64_link_hash_table *htab)
+static int
+elf_aarch64_compare_mapping (const void *a, const void *b)
{
- asection *link_sec;
- asection *stub_sec;
- struct elf_aarch64_stub_hash_entry *stub_entry;
-
- link_sec = htab->stub_group[section->id].link_sec;
- stub_sec = htab->stub_group[section->id].stub_sec;
- if (stub_sec == NULL)
- {
- stub_sec = htab->stub_group[link_sec->id].stub_sec;
- if (stub_sec == NULL)
- {
- size_t namelen;
- bfd_size_type len;
- char *s_name;
-
- namelen = strlen (link_sec->name);
- len = namelen + sizeof (STUB_SUFFIX);
- s_name = bfd_alloc (htab->stub_bfd, len);
- if (s_name == NULL)
- return NULL;
-
- memcpy (s_name, link_sec->name, namelen);
- memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
- stub_sec = (*htab->add_stub_section) (s_name, link_sec);
- if (stub_sec == NULL)
- return NULL;
- htab->stub_group[link_sec->id].stub_sec = stub_sec;
- }
- htab->stub_group[section->id].stub_sec = stub_sec;
- }
+ const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
+ const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
- /* Enter this entry into the linker stub hash table. */
- stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
- TRUE, FALSE);
- if (stub_entry == NULL)
- {
- (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
- section->owner, stub_name);
- return NULL;
- }
+ if (amap->vma > bmap->vma)
+ return 1;
+ else if (amap->vma < bmap->vma)
+ return -1;
+ else if (amap->type > bmap->type)
+ /* Ensure results do not depend on the host qsort for objects with
+ multiple mapping symbols at the same address by sorting on type
+ after vma. */
+ return 1;
+ else if (amap->type < bmap->type)
+ return -1;
+ else
+ return 0;
+}
- stub_entry->stub_sec = stub_sec;
- stub_entry->stub_offset = 0;
- stub_entry->id_sec = link_sec;
- return stub_entry;
+static char *
+_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
+{
+ char *stub_name = (char *) bfd_malloc
+ (strlen ("__erratum_835769_veneer_") + 16);
+ sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
+ return stub_name;
}
+/* Scan for Cortex-A53 erratum 835769 sequence.
+
+ Return TRUE else FALSE on abnormal termination. */
+
static bfd_boolean
-aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
- void *in_arg ATTRIBUTE_UNUSED)
+_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
+ struct bfd_link_info *info,
+ unsigned int *num_fixes_p)
{
- struct elf_aarch64_stub_hash_entry *stub_entry;
- asection *stub_sec;
- bfd *stub_bfd;
- bfd_byte *loc;
- bfd_vma sym_value;
- unsigned int template_size;
- const uint32_t *template;
- unsigned int i;
+ asection *section;
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+ unsigned int num_fixes = *num_fixes_p;
- /* Massage our args to the form they really have. */
- stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ if (htab == NULL)
+ return TRUE;
- stub_sec = stub_entry->stub_sec;
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ bfd_byte *contents = NULL;
+ struct _aarch64_elf_section_data *sec_data;
+ unsigned int span;
+
+ if (elf_section_type (section) != SHT_PROGBITS
+ || (elf_section_flags (section) & SHF_EXECINSTR) == 0
+ || (section->flags & SEC_EXCLUDE) != 0
+ || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
+ || (section->output_section == bfd_abs_section_ptr))
+ continue;
- /* Make a note of the offset within the stubs for this entry. */
- stub_entry->stub_offset = stub_sec->size;
- loc = stub_sec->contents + stub_entry->stub_offset;
+ if (elf_section_data (section)->this_hdr.contents != NULL)
+ contents = elf_section_data (section)->this_hdr.contents;
+ else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
+ return FALSE;
- stub_bfd = stub_sec->owner;
+ sec_data = elf_aarch64_section_data (section);
- /* This is the address of the stub destination. */
- sym_value = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
+ qsort (sec_data->map, sec_data->mapcount,
+ sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
- if (stub_entry->stub_type == aarch64_stub_long_branch)
- {
- bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
- + stub_sec->output_offset);
+ for (span = 0; span < sec_data->mapcount; span++)
+ {
+ unsigned int span_start = sec_data->map[span].vma;
+ unsigned int span_end = ((span == sec_data->mapcount - 1)
+ ? sec_data->map[0].vma + section->size
+ : sec_data->map[span + 1].vma);
+ unsigned int i;
+ char span_type = sec_data->map[span].type;
+
+ if (span_type == 'd')
+ continue;
- /* See if we can relax the stub. */
- if (aarch64_valid_for_adrp_p (sym_value, place))
- stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
- }
+ for (i = span_start; i + 4 < span_end; i += 4)
+ {
+ uint32_t insn_1 = bfd_getl32 (contents + i);
+ uint32_t insn_2 = bfd_getl32 (contents + i + 4);
- switch (stub_entry->stub_type)
- {
- case aarch64_stub_adrp_branch:
- template = aarch64_adrp_branch_stub;
- template_size = sizeof (aarch64_adrp_branch_stub);
- break;
- case aarch64_stub_long_branch:
- template = aarch64_long_branch_stub;
- template_size = sizeof (aarch64_long_branch_stub);
- break;
- default:
- BFD_FAIL ();
- return FALSE;
+ if (aarch64_erratum_sequence (insn_1, insn_2))
+ {
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
+ if (! stub_name)
+ return FALSE;
+
+ stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
+ section,
+ htab);
+ if (! stub_entry)
+ return FALSE;
+
+ stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
+ stub_entry->target_section = section;
+ stub_entry->target_value = i + 4;
+ stub_entry->veneered_insn = insn_2;
+ stub_entry->output_name = stub_name;
+ num_fixes++;
+ }
+ }
+ }
+ if (elf_section_data (section)->this_hdr.contents == NULL)
+ free (contents);
}
- for (i = 0; i < (template_size / sizeof template[0]); i++)
- {
- bfd_putl32 (template[i], loc);
- loc += 4;
- }
+ *num_fixes_p = num_fixes;
- template_size = (template_size + 7) & ~7;
- stub_sec->size += template_size;
+ return TRUE;
+}
- switch (stub_entry->stub_type)
- {
- case aarch64_stub_adrp_branch:
- if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
- stub_entry->stub_offset, sym_value))
- /* The stub would not have been relaxed if the offset was out
- of range. */
- BFD_FAIL ();
- _bfd_final_link_relocate
- (elfNN_aarch64_howto_from_type (AARCH64_R (ADD_ABS_LO12_NC)),
- stub_bfd,
- stub_sec,
- stub_sec->contents,
- stub_entry->stub_offset + 4,
- sym_value,
- 0);
- break;
+/* Test if instruction INSN is ADRP. */
- case aarch64_stub_long_branch:
- /* We want the value relative to the address 12 bytes back from the
- value itself. */
- _bfd_final_link_relocate (elfNN_aarch64_howto_from_type
- (AARCH64_R (PRELNN)), stub_bfd, stub_sec,
- stub_sec->contents,
- stub_entry->stub_offset + 16,
- sym_value + 12, 0);
- break;
- default:
- break;
- }
+static bfd_boolean
+_bfd_aarch64_adrp_p (uint32_t insn)
+{
+ return ((insn & 0x9f000000) == 0x90000000);
+}
- return TRUE;
+
+/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
+
+static bfd_boolean
+_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
+ uint32_t insn_3)
+{
+ uint32_t rt;
+ uint32_t rt2;
+ bfd_boolean pair;
+ bfd_boolean load;
+
+ return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
+ && (!pair
+ || (pair && !load))
+ && AARCH64_LDST_UIMM (insn_3)
+ && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
}
-/* As above, but don't actually build the stub. Just bump offset so
- we know stub section sizes. */
+
+/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
+
+ Return TRUE if section CONTENTS at offset I contains one of the
+ erratum 843419 sequences, otherwise return FALSE. If a sequence is
+ seen set P_VENEER_I to the offset of the final LOAD/STORE
+ instruction in the sequence.
+ */
static bfd_boolean
-aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
- void *in_arg ATTRIBUTE_UNUSED)
+_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
+ bfd_vma i, bfd_vma span_end,
+ bfd_vma *p_veneer_i)
{
- struct elf_aarch64_stub_hash_entry *stub_entry;
- int size;
+ uint32_t insn_1 = bfd_getl32 (contents + i);
- /* Massage our args to the form they really have. */
- stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ if (!_bfd_aarch64_adrp_p (insn_1))
+ return FALSE;
- switch (stub_entry->stub_type)
+ if (span_end < i + 12)
+ return FALSE;
+
+ uint32_t insn_2 = bfd_getl32 (contents + i + 4);
+ uint32_t insn_3 = bfd_getl32 (contents + i + 8);
+
+ if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
+ return FALSE;
+
+ if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
{
- case aarch64_stub_adrp_branch:
- size = sizeof (aarch64_adrp_branch_stub);
- break;
- case aarch64_stub_long_branch:
- size = sizeof (aarch64_long_branch_stub);
- break;
- default:
- BFD_FAIL ();
- return FALSE;
- break;
+ *p_veneer_i = i + 8;
+ return TRUE;
}
- size = (size + 7) & ~7;
- stub_entry->stub_sec->size += size;
- return TRUE;
+ if (span_end < i + 16)
+ return FALSE;
+
+ uint32_t insn_4 = bfd_getl32 (contents + i + 12);
+
+ if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
+ {
+ *p_veneer_i = i + 12;
+ return TRUE;
+ }
+
+ return FALSE;
}
-/* External entry points for sizing and building linker stubs. */
-/* Set up various things so that we can make a list of input sections
- for each output section included in the link. Returns -1 on error,
- 0 when no stubs will be needed, and 1 on success. */
+/* Resize all stub sections. */
-int
-elfNN_aarch64_setup_section_lists (bfd *output_bfd,
- struct bfd_link_info *info)
+static void
+_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
{
- bfd *input_bfd;
- unsigned int bfd_count;
- int top_id, top_index;
asection *section;
- asection **input_list, **list;
- bfd_size_type amt;
- struct elf_aarch64_link_hash_table *htab =
- elf_aarch64_hash_table (info);
-
- if (!is_elf_hash_table (htab))
- return 0;
- /* Count the number of input BFDs and find the top input section id. */
- for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
- input_bfd != NULL; input_bfd = input_bfd->link_next)
+ /* OK, we've added some stubs. Find out the new size of the
+ stub sections. */
+ for (section = htab->stub_bfd->sections;
+ section != NULL; section = section->next)
{
- bfd_count += 1;
- for (section = input_bfd->sections;
- section != NULL; section = section->next)
- {
- if (top_id < section->id)
- top_id = section->id;
- }
+ /* Ignore non-stub sections. */
+ if (!strstr (section->name, STUB_SUFFIX))
+ continue;
+ section->size = 0;
}
- htab->bfd_count = bfd_count;
- amt = sizeof (struct map_stub) * (top_id + 1);
- htab->stub_group = bfd_zmalloc (amt);
- if (htab->stub_group == NULL)
- return -1;
+ bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
- /* We can't use output_bfd->section_count here to find the top output
- section index as some sections may have been removed, and
- _bfd_strip_section_from_output doesn't renumber the indices. */
- for (section = output_bfd->sections, top_index = 0;
+ for (section = htab->stub_bfd->sections;
section != NULL; section = section->next)
{
- if (top_index < section->index)
- top_index = section->index;
- }
-
- htab->top_index = top_index;
- amt = sizeof (asection *) * (top_index + 1);
- input_list = bfd_malloc (amt);
- htab->input_list = input_list;
- if (input_list == NULL)
- return -1;
+ if (!strstr (section->name, STUB_SUFFIX))
+ continue;
- /* For sections we aren't interested in, mark their entries with a
- value we can check later. */
- list = input_list + top_index;
- do
- *list = bfd_abs_section_ptr;
- while (list-- != input_list);
+ if (section->size)
+ section->size += 4;
- for (section = output_bfd->sections;
- section != NULL; section = section->next)
- {
- if ((section->flags & SEC_CODE) != 0)
- input_list[section->index] = NULL;
+ /* Ensure all stub sections have a size which is a multiple of
+ 4096. This is important in order to ensure that the insertion
+ of stub sections does not in itself move existing code around
+ in such a way that new errata sequences are created. */
+ if (htab->fix_erratum_843419)
+ if (section->size)
+ section->size = BFD_ALIGN (section->size, 0x1000);
}
+}
- return 1;
+
+/* Construct an erratum 843419 workaround stub name.
+ */
+
+static char *
+_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
+ bfd_vma offset)
+{
+ const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
+ char *stub_name = bfd_malloc (len);
+
+ if (stub_name != NULL)
+ snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
+ input_section->owner->id,
+ input_section->id,
+ offset);
+ return stub_name;
}
-/* Used by elfNN_aarch64_next_input_section and group_sections. */
-#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
+/* Build a stub_entry structure describing an 843419 fixup.
-/* The linker repeatedly calls this function for each input section,
- in the order that input sections are linked into output sections.
- Build lists of input sections to determine groupings between which
- we may insert linker stubs. */
+ The stub_entry constructed is populated with the bit pattern INSN
+ of the instruction located at OFFSET within input SECTION.
-void
-elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
+ Returns TRUE on success. */
+
+static bfd_boolean
+_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
+ bfd_vma adrp_offset,
+ bfd_vma ldst_offset,
+ asection *section,
+ struct bfd_link_info *info)
{
- struct elf_aarch64_link_hash_table *htab =
- elf_aarch64_hash_table (info);
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+ char *stub_name;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
- if (isec->output_section->index <= htab->top_index)
+ stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ FALSE, FALSE);
+ if (stub_entry)
{
- asection **list = htab->input_list + isec->output_section->index;
+ free (stub_name);
+ return TRUE;
+ }
- if (*list != bfd_abs_section_ptr)
- {
- /* Steal the link_sec pointer for our list. */
- /* This happens to make the list in reverse order,
- which is what we want. */
- PREV_SEC (isec) = *list;
- *list = isec;
- }
+ /* We always place an 843419 workaround veneer in the stub section
+ attached to the input section in which an erratum sequence has
+ been found. This ensures that later in the link process (in
+ elfNN_aarch64_write_section) when we copy the veneered
+ instruction from the input section into the stub section the
+ copied instruction will have had any relocations applied to it.
+ If we placed workaround veneers in any other stub section then we
+ could not assume that all relocations have been processed on the
+ corresponding input section at the point we output the stub
+ section.
+ */
+
+ stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
+ if (stub_entry == NULL)
+ {
+ free (stub_name);
+ return FALSE;
}
+
+ stub_entry->adrp_offset = adrp_offset;
+ stub_entry->target_value = ldst_offset;
+ stub_entry->target_section = section;
+ stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
+ stub_entry->veneered_insn = insn;
+ stub_entry->output_name = stub_name;
+
+ return TRUE;
}
-/* See whether we can group stub sections together. Grouping stub
- sections may result in fewer stubs. More importantly, we need to
- put all .init* and .fini* stubs at the beginning of the .init or
- .fini output sections respectively, because glibc splits the
- _init and _fini functions into multiple parts. Putting a stub in
- the middle of a function is not a good idea. */
-static void
-group_sections (struct elf_aarch64_link_hash_table *htab,
- bfd_size_type stub_group_size,
- bfd_boolean stubs_always_before_branch)
+/* Scan an input section looking for the signature of erratum 843419.
+
+ Scans input SECTION in INPUT_BFD looking for erratum 843419
+ signatures, for each signature found a stub_entry is created
+ describing the location of the erratum for subsequent fixup.
+
+ Return TRUE on successful scan, FALSE on failure to scan.
+ */
+
+static bfd_boolean
+_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
+ struct bfd_link_info *info)
{
- asection **list = htab->input_list + htab->top_index;
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+
+ if (htab == NULL)
+ return TRUE;
+
+ if (elf_section_type (section) != SHT_PROGBITS
+ || (elf_section_flags (section) & SHF_EXECINSTR) == 0
+ || (section->flags & SEC_EXCLUDE) != 0
+ || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
+ || (section->output_section == bfd_abs_section_ptr))
+ return TRUE;
do
{
- asection *tail = *list;
+ bfd_byte *contents = NULL;
+ struct _aarch64_elf_section_data *sec_data;
+ unsigned int span;
- if (tail == bfd_abs_section_ptr)
- continue;
+ if (elf_section_data (section)->this_hdr.contents != NULL)
+ contents = elf_section_data (section)->this_hdr.contents;
+ else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
+ return FALSE;
- while (tail != NULL)
- {
- asection *curr;
- asection *prev;
- bfd_size_type total;
+ sec_data = elf_aarch64_section_data (section);
- curr = tail;
- total = tail->size;
- while ((prev = PREV_SEC (curr)) != NULL
- && ((total += curr->output_offset - prev->output_offset)
- < stub_group_size))
- curr = prev;
+ qsort (sec_data->map, sec_data->mapcount,
+ sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
- /* OK, the size from the start of CURR to the end is less
- than stub_group_size and thus can be handled by one stub
- section. (Or the tail section is itself larger than
- stub_group_size, in which case we may be toast.)
- We should really be keeping track of the total size of
- stubs added here, as stubs contribute to the final output
- section size. */
- do
- {
- prev = PREV_SEC (tail);
- /* Set up this stub group. */
- htab->stub_group[tail->id].link_sec = curr;
- }
- while (tail != curr && (tail = prev) != NULL);
+ for (span = 0; span < sec_data->mapcount; span++)
+ {
+ unsigned int span_start = sec_data->map[span].vma;
+ unsigned int span_end = ((span == sec_data->mapcount - 1)
+ ? sec_data->map[0].vma + section->size
+ : sec_data->map[span + 1].vma);
+ unsigned int i;
+ char span_type = sec_data->map[span].type;
+
+ if (span_type == 'd')
+ continue;
- /* But wait, there's more! Input sections up to stub_group_size
- bytes before the stub section can be handled by it too. */
- if (!stubs_always_before_branch)
+ for (i = span_start; i + 8 < span_end; i += 4)
{
- total = 0;
- while (prev != NULL
- && ((total += tail->output_offset - prev->output_offset)
- < stub_group_size))
+ bfd_vma vma = (section->output_section->vma
+ + section->output_offset
+ + i);
+ bfd_vma veneer_i;
+
+ if (_bfd_aarch64_erratum_843419_p
+ (contents, vma, i, span_end, &veneer_i))
{
- tail = prev;
- prev = PREV_SEC (tail);
- htab->stub_group[tail->id].link_sec = curr;
+ uint32_t insn = bfd_getl32 (contents + veneer_i);
+
+ if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
+ section, info))
+ return FALSE;
}
}
- tail = prev;
}
+
+ if (elf_section_data (section)->this_hdr.contents == NULL)
+ free (contents);
}
- while (list-- != htab->input_list);
+ while (0);
- free (htab->input_list);
+ return TRUE;
}
-#undef PREV_SEC
/* Determine and set the size of the stub section for a final link.
{
bfd_size_type stub_group_size;
bfd_boolean stubs_always_before_branch;
- bfd_boolean stub_changed = 0;
+ bfd_boolean stub_changed = FALSE;
struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+ unsigned int num_erratum_835769_fixes = 0;
/* Propagate mach to stub bfd, because it may not have been
finalized when we created stub_bfd. */
group_sections (htab, stub_group_size, stubs_always_before_branch);
+ (*htab->layout_sections_again) ();
+
+ if (htab->fix_erratum_835769)
+ {
+ bfd *input_bfd;
+
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL; input_bfd = input_bfd->link.next)
+ if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
+ &num_erratum_835769_fixes))
+ return FALSE;
+
+ _bfd_aarch64_resize_stubs (htab);
+ (*htab->layout_sections_again) ();
+ }
+
+ if (htab->fix_erratum_843419)
+ {
+ bfd *input_bfd;
+
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link.next)
+ {
+ asection *section;
+
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
+ return FALSE;
+ }
+
+ _bfd_aarch64_resize_stubs (htab);
+ (*htab->layout_sections_again) ();
+ }
+
while (1)
{
bfd *input_bfd;
- unsigned int bfd_indx;
- asection *stub_sec;
- for (input_bfd = info->input_bfds, bfd_indx = 0;
- input_bfd != NULL; input_bfd = input_bfd->link_next, bfd_indx++)
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL; input_bfd = input_bfd->link.next)
{
Elf_Internal_Shdr *symtab_hdr;
asection *section;
/* Determine what (if any) linker stub is needed. */
stub_type = aarch64_type_of_stub
- (info, section, irela, st_type, hash, destination);
+ (info, section, irela, sym_sec, st_type, hash, destination);
if (stub_type == aarch64_stub_none)
continue;
continue;
}
- stub_entry = elfNN_aarch64_add_stub (stub_name, section,
- htab);
+ stub_entry = _bfd_aarch64_add_stub_entry_in_group
+ (stub_name, section, htab);
if (stub_entry == NULL)
{
free (stub_name);
if (!stub_changed)
break;
- /* OK, we've added some stubs. Find out the new size of the
- stub sections. */
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL; stub_sec = stub_sec->next)
- stub_sec->size = 0;
-
- bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
+ _bfd_aarch64_resize_stubs (htab);
/* Ask the linker to do its stuff. */
(*htab->layout_sections_again) ();
if (stub_sec->contents == NULL && size != 0)
return FALSE;
stub_sec->size = 0;
+
+ bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
+ stub_sec->size += 4;
}
/* Build the stubs as directed by the stub hash table. */
return;
if ((abfd->flags & DYNAMIC) != 0)
- return;
+ return;
hdr = &elf_symtab_hdr (abfd);
localsyms = hdr->sh_info;
bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
struct bfd_link_info *link_info,
int no_enum_warn,
- int no_wchar_warn, int pic_veneer)
+ int no_wchar_warn, int pic_veneer,
+ int fix_erratum_835769,
+ int fix_erratum_843419)
{
struct elf_aarch64_link_hash_table *globals;
globals = elf_aarch64_hash_table (link_info);
globals->pic_veneer = pic_veneer;
+ globals->fix_erratum_835769 = fix_erratum_835769;
+ globals->fix_erratum_843419 = fix_erratum_843419;
+ globals->fix_erratum_843419_adr = TRUE;
BFD_ASSERT (is_aarch64_elf (output_bfd));
elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
BFD_ASSERT (basegot != NULL);
off = h->got.offset;
BFD_ASSERT (off != (bfd_vma) - 1);
- if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
- || (info->shared
+ if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
+ || (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
|| (ELF_ST_VISIBILITY (h->other)
&& h->root.type == bfd_link_hash_undefweak))
switch (r_type)
{
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
return (is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
- case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ return (is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
+ : r_type);
+
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ return (is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
+ : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
+
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ return (is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
+ : BFD_RELOC_AARCH64_NONE);
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ return (is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ return (is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
+
case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
return (is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ return r_type;
+
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ return (is_local
+ ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
+ : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_CALL:
/* Instructions with these relocations will become NOPs. */
return BFD_RELOC_AARCH64_NONE;
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
+
+#if ARCH_SIZE == 64
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ return is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
+
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ return is_local
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
+#endif
+
default:
break;
}
{
switch (r_type)
{
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
return GOT_NORMAL;
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
return GOT_TLS_GD;
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
case BFD_RELOC_AARCH64_TLSDESC_CALL:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
return GOT_TLSDESC_GD;
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
return GOT_TLS_IE;
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
- return GOT_UNKNOWN;
-
default:
break;
}
unsigned int symbol_got_type;
unsigned int reloc_got_type;
- if (! IS_AARCH64_TLS_RELOC (r_type))
+ if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
return FALSE;
symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
return TRUE;
- if (info->shared)
+ if (bfd_link_pic (info))
return FALSE;
if (h && h->root.type == bfd_link_hash_undefweak)
struct elf_link_hash_table *htab = elf_hash_table (info);
/* If tls_sec is NULL, we should have signalled an error already. */
- if (htab->tls_sec == NULL)
- return 0;
+ BFD_ASSERT (htab->tls_sec != NULL);
bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
htab->tls_sec->alignment_power);
return value;
}
+/* Data for make_branch_to_erratum_835769_stub(). */
+
+struct erratum_835769_branch_to_stub_data
+{
+ struct bfd_link_info *info;
+ asection *output_section;
+ bfd_byte *contents;
+};
+
+/* Helper to insert branches to erratum 835769 stubs in the right
+ places for a particular section. */
+
+static bfd_boolean
+make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ struct erratum_835769_branch_to_stub_data *data;
+ bfd_byte *contents;
+ unsigned long branch_insn = 0;
+ bfd_vma veneered_insn_loc, veneer_entry_loc;
+ bfd_signed_vma branch_offset;
+ unsigned int target;
+ bfd *abfd;
+
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ data = (struct erratum_835769_branch_to_stub_data *) in_arg;
+
+ if (stub_entry->target_section != data->output_section
+ || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
+ return TRUE;
+
+ contents = data->contents;
+ veneered_insn_loc = stub_entry->target_section->output_section->vma
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_value;
+ veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_offset;
+ branch_offset = veneer_entry_loc - veneered_insn_loc;
+
+ abfd = stub_entry->target_section->owner;
+ if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
+ (*_bfd_error_handler)
+ (_("%B: error: Erratum 835769 stub out "
+ "of range (input file too large)"), abfd);
+
+ target = stub_entry->target_value;
+ branch_insn = 0x14000000;
+ branch_offset >>= 2;
+ branch_offset &= 0x3ffffff;
+ branch_insn |= branch_offset;
+ bfd_putl32 (branch_insn, &contents[target]);
+
+ return TRUE;
+}
+
+
+static bfd_boolean
+_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry
+ = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ struct erratum_835769_branch_to_stub_data *data
+ = (struct erratum_835769_branch_to_stub_data *) in_arg;
+ struct bfd_link_info *info;
+ struct elf_aarch64_link_hash_table *htab;
+ bfd_byte *contents;
+ asection *section;
+ bfd *abfd;
+ bfd_vma place;
+ uint32_t insn;
+
+ info = data->info;
+ contents = data->contents;
+ section = data->output_section;
+
+ htab = elf_aarch64_hash_table (info);
+
+ if (stub_entry->target_section != section
+ || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
+ return TRUE;
+
+ insn = bfd_getl32 (contents + stub_entry->target_value);
+ bfd_putl32 (insn,
+ stub_entry->stub_sec->contents + stub_entry->stub_offset);
+
+ place = (section->output_section->vma + section->output_offset
+ + stub_entry->adrp_offset);
+ insn = bfd_getl32 (contents + stub_entry->adrp_offset);
+
+ if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
+ abort ();
+
+ bfd_signed_vma imm =
+ (_bfd_aarch64_sign_extend
+ ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
+ - (place & 0xfff));
+
+ if (htab->fix_erratum_843419_adr
+ && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
+ {
+ insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
+ | AARCH64_RT (insn));
+ bfd_putl32 (insn, contents + stub_entry->adrp_offset);
+ }
+ else
+ {
+ bfd_vma veneered_insn_loc;
+ bfd_vma veneer_entry_loc;
+ bfd_signed_vma branch_offset;
+ uint32_t branch_insn;
+
+ veneered_insn_loc = stub_entry->target_section->output_section->vma
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_value;
+ veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_offset;
+ branch_offset = veneer_entry_loc - veneered_insn_loc;
+
+ abfd = stub_entry->target_section->owner;
+ if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
+ (*_bfd_error_handler)
+ (_("%B: error: Erratum 843419 stub out "
+ "of range (input file too large)"), abfd);
+
+ branch_insn = 0x14000000;
+ branch_offset >>= 2;
+ branch_offset &= 0x3ffffff;
+ branch_insn |= branch_offset;
+ bfd_putl32 (branch_insn, contents + stub_entry->target_value);
+ }
+ return TRUE;
+}
+
+
+static bfd_boolean
+elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *link_info,
+ asection *sec,
+ bfd_byte *contents)
+
+{
+ struct elf_aarch64_link_hash_table *globals =
+ elf_aarch64_hash_table (link_info);
+
+ if (globals == NULL)
+ return FALSE;
+
+ /* Fix code to point to erratum 835769 stubs. */
+ if (globals->fix_erratum_835769)
+ {
+ struct erratum_835769_branch_to_stub_data data;
+
+ data.info = link_info;
+ data.output_section = sec;
+ data.contents = contents;
+ bfd_hash_traverse (&globals->stub_hash_table,
+ make_branch_to_erratum_835769_stub, &data);
+ }
+
+ if (globals->fix_erratum_843419)
+ {
+ struct erratum_835769_branch_to_stub_data data;
+
+ data.info = link_info;
+ data.output_section = sec;
+ data.contents = contents;
+ bfd_hash_traverse (&globals->stub_hash_table,
+ _bfd_aarch64_erratum_843419_branch_to_stub, &data);
+ }
+
+ return FALSE;
+}
+
/* Perform a relocation as part of a final link. */
static bfd_reloc_status_type
elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
struct elf_link_hash_entry *h,
bfd_boolean *unresolved_reloc_p,
bfd_boolean save_addend,
- bfd_vma *saved_addend)
+ bfd_vma *saved_addend,
+ Elf_Internal_Sym *sym)
{
+ Elf_Internal_Shdr *symtab_hdr;
unsigned int r_type = howto->type;
bfd_reloc_code_real_type bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto);
bfd_reloc_code_real_type new_bfd_r_type;
unsigned long r_symndx;
bfd_byte *hit_data = contents + rel->r_offset;
- bfd_vma place;
+ bfd_vma place, off;
bfd_signed_vma signed_addend;
struct elf_aarch64_link_hash_table *globals;
bfd_boolean weak_undef_p;
+ asection *base_got;
+
+ globals = elf_aarch64_hash_table (info);
+
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
+
+ BFD_ASSERT (is_aarch64_elf (input_bfd));
+
+ r_symndx = ELFNN_R_SYM (rel->r_info);
+
+ /* It is possible to have linker relaxations on some TLS access
+ models. Update our information here. */
+ new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx);
+ if (new_bfd_r_type != bfd_r_type)
+ {
+ bfd_r_type = new_bfd_r_type;
+ howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
+ BFD_ASSERT (howto != NULL);
+ r_type = howto->type;
+ }
+
+ place = input_section->output_section->vma
+ + input_section->output_offset + rel->r_offset;
+
+ /* Get addend, accumulating the addend for consecutive relocs
+ which refer to the same offset. */
+ signed_addend = saved_addend ? *saved_addend : 0;
+ signed_addend += rel->r_addend;
+
+ weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
+ : bfd_is_und_section (sym_sec));
+
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
+ it here if it is defined in a non-shared object. */
+ if (h != NULL
+ && h->type == STT_GNU_IFUNC
+ && h->def_regular)
+ {
+ asection *plt;
+ const char *name;
+ bfd_vma addend = 0;
+
+ if ((input_section->flags & SEC_ALLOC) == 0
+ || h->plt.offset == (bfd_vma) -1)
+ abort ();
+
+ /* STT_GNU_IFUNC symbol must go through PLT. */
+ plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
+ value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
+
+ switch (bfd_r_type)
+ {
+ default:
+ if (h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
+ NULL);
+ (*_bfd_error_handler)
+ (_("%B: relocation %s against STT_GNU_IFUNC "
+ "symbol `%s' isn't handled by %s"), input_bfd,
+ howto->name, name, __FUNCTION__);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+
+ case BFD_RELOC_AARCH64_NN:
+ if (rel->r_addend != 0)
+ {
+ if (h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr,
+ sym, NULL);
+ (*_bfd_error_handler)
+ (_("%B: relocation %s against STT_GNU_IFUNC "
+ "symbol `%s' has non-zero addend: %d"),
+ input_bfd, howto->name, name, rel->r_addend);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ /* Generate dynamic relocation only when there is a
+ non-GOT reference in a shared object. */
+ if (bfd_link_pic (info) && h->non_got_ref)
+ {
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+
+ /* Need a dynamic relocation to get the real function
+ address. */
+ outrel.r_offset = _bfd_elf_section_offset (output_bfd,
+ info,
+ input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1
+ || outrel.r_offset == (bfd_vma) -2)
+ abort ();
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (h->dynindx == -1
+ || h->forced_local
+ || bfd_link_executable (info))
+ {
+ /* This symbol is resolved locally. */
+ outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
+ outrel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
+ outrel.r_addend = 0;
+ }
+
+ sreloc = globals->root.irelifunc;
+ elf_append_rela (output_bfd, sreloc, &outrel);
+
+ /* If this reloc is against an external symbol, we
+ do not want to fiddle with the addend. Otherwise,
+ we need to include the symbol value so that it
+ becomes an addend for the dynamic reloc. For an
+ internal symbol, we have updated addend. */
+ return bfd_reloc_ok;
+ }
+ /* FALLTHROUGH */
+ case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_JUMP26:
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ signed_addend,
+ weak_undef_p);
+ return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
+ howto, value);
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ base_got = globals->root.sgot;
+ off = h->got.offset;
- globals = elf_aarch64_hash_table (info);
+ if (base_got == NULL)
+ abort ();
- BFD_ASSERT (is_aarch64_elf (input_bfd));
+ if (off == (bfd_vma) -1)
+ {
+ bfd_vma plt_index;
- r_symndx = ELFNN_R_SYM (rel->r_info);
+ /* We can't use h->got.offset here to save state, or
+ even just remember the offset, as finish_dynamic_symbol
+ would use that as offset into .got. */
- /* It is possible to have linker relaxations on some TLS access
- models. Update our information here. */
- new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx);
- if (new_bfd_r_type != bfd_r_type)
- {
- bfd_r_type = new_bfd_r_type;
- howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
- BFD_ASSERT (howto != NULL);
- r_type = howto->type;
- }
+ if (globals->root.splt != NULL)
+ {
+ plt_index = ((h->plt.offset - globals->plt_header_size) /
+ globals->plt_entry_size);
+ off = (plt_index + 3) * GOT_ENTRY_SIZE;
+ base_got = globals->root.sgotplt;
+ }
+ else
+ {
+ plt_index = h->plt.offset / globals->plt_entry_size;
+ off = plt_index * GOT_ENTRY_SIZE;
+ base_got = globals->root.igotplt;
+ }
- place = input_section->output_section->vma
- + input_section->output_offset + rel->r_offset;
+ if (h->dynindx == -1
+ || h->forced_local
+ || info->symbolic)
+ {
+ /* This references the local definition. We must
+ initialize this entry in the global offset table.
+ Since the offset must always be a multiple of 8,
+ we use the least significant bit to record
+ whether we have initialized it already.
+
+ When doing a dynamic link, we create a .rela.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_NN (output_bfd, value,
+ base_got->contents + off);
+ /* Note that this is harmless as -1 | 1 still is -1. */
+ h->got.offset |= 1;
+ }
+ }
+ value = (base_got->output_section->vma
+ + base_got->output_offset + off);
+ }
+ else
+ value = aarch64_calculate_got_entry_vma (h, globals, info,
+ value, output_bfd,
+ unresolved_reloc_p);
- /* Get addend, accumulating the addend for consecutive relocs
- which refer to the same offset. */
- signed_addend = saved_addend ? *saved_addend : 0;
- signed_addend += rel->r_addend;
+ switch (bfd_r_type)
+ {
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ addend = (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
+ break;
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ value = (value - globals->root.sgot->output_section->vma
+ - globals->root.sgot->output_offset);
+ default:
+ break;
+ }
- weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
- : bfd_is_und_section (sym_sec));
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ addend, weak_undef_p);
+ return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
+ case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ break;
+ }
+ }
switch (bfd_r_type)
{
case BFD_RELOC_AARCH64_NONE:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
case BFD_RELOC_AARCH64_TLSDESC_CALL:
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
*unresolved_reloc_p = FALSE;
return bfd_reloc_ok;
/* When generating a shared object or relocatable executable, these
relocations are copied into the output file to be resolved at
run time. */
- if (((info->shared == TRUE) || globals->root.is_relocatable_executable)
+ if (((bfd_link_pic (info) == TRUE)
+ || globals->root.is_relocatable_executable)
&& (input_section->flags & SEC_ALLOC)
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
*unresolved_reloc_p = FALSE;
- sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd,
- input_section, 1);
- if (sreloc == NULL)
- return bfd_reloc_notsupported;
-
skip = FALSE;
relocate = FALSE;
memset (&outrel, 0, sizeof outrel);
else if (h != NULL
&& h->dynindx != -1
- && (!info->shared || !info->symbolic || !h->def_regular))
+ && (!bfd_link_pic (info)
+ || !SYMBOLIC_BIND (info, h)
+ || !h->def_regular))
outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
else
{
outrel.r_addend += value;
}
- loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (htab);
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL || sreloc->contents == NULL)
+ return bfd_reloc_notsupported;
+
+ loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
- if (sreloc->reloc_count * RELOC_SIZE (htab) > sreloc->size)
+ if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
{
/* Sanity to check that we have previously allocated
sufficient space in the relocation section for the
value += signed_addend;
break;
- case BFD_RELOC_AARCH64_JUMP26:
case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_JUMP26:
{
asection *splt = globals->root.splt;
bfd_boolean via_plt_p =
/* If the call goes through a PLT entry, make sure to
check distance to the right destination address. */
if (via_plt_p)
- {
- value = (splt->output_section->vma
- + splt->output_offset + h->plt.offset);
- *unresolved_reloc_p = FALSE;
- }
-
- /* If the target symbol is global and marked as a function the
- relocation applies a function call or a tail call. In this
- situation we can veneer out of range branches. The veneers
- use IP0 and IP1 hence cannot be used arbitrary out of range
- branches that occur within the body of a function. */
- if (h && h->type == STT_FUNC)
- {
- /* Check if a stub has to be inserted because the destination
- is too far away. */
- if (! aarch64_valid_branch_p (value, place))
- {
- /* The target is out of reach, so redirect the branch to
- the local stub for this function. */
- struct elf_aarch64_stub_hash_entry *stub_entry;
- stub_entry = elfNN_aarch64_get_stub_entry (input_section,
- sym_sec, h,
- rel, globals);
- if (stub_entry != NULL)
- value = (stub_entry->stub_offset
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
- }
- }
+ value = (splt->output_section->vma
+ + splt->output_offset + h->plt.offset);
+
+ /* Check if a stub has to be inserted because the destination
+ is too far away. */
+ struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
+ if (! aarch64_valid_branch_p (value, place))
+ /* The target is out of reach, so redirect the branch to
+ the local stub for this function. */
+ stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
+ rel, globals);
+ if (stub_entry != NULL)
+ value = (stub_entry->stub_offset
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma);
}
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
signed_addend, weak_undef_p);
+ *unresolved_reloc_p = FALSE;
break;
+ case BFD_RELOC_AARCH64_16_PCREL:
+ case BFD_RELOC_AARCH64_32_PCREL:
+ case BFD_RELOC_AARCH64_64_PCREL:
+ case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
+ case BFD_RELOC_AARCH64_LD_LO19_PCREL:
+ if (bfd_link_pic (info)
+ && (input_section->flags & SEC_ALLOC) != 0
+ && (input_section->flags & SEC_READONLY) != 0
+ && h != NULL
+ && !h->def_regular)
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+
+ (*_bfd_error_handler)
+ (_("%B: relocation %s against external symbol `%s' can not be used"
+ " when making a shared object; recompile with -fPIC"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name,
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
case BFD_RELOC_AARCH64_16:
#if ARCH_SIZE == 64
case BFD_RELOC_AARCH64_32:
#endif
case BFD_RELOC_AARCH64_ADD_LO12:
- case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
- case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
- case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
case BFD_RELOC_AARCH64_BRANCH19:
- case BFD_RELOC_AARCH64_LD_LO19_PCREL:
- case BFD_RELOC_AARCH64_LDST8_LO12:
+ case BFD_RELOC_AARCH64_LDST128_LO12:
case BFD_RELOC_AARCH64_LDST16_LO12:
case BFD_RELOC_AARCH64_LDST32_LO12:
case BFD_RELOC_AARCH64_LDST64_LO12:
- case BFD_RELOC_AARCH64_LDST128_LO12:
- case BFD_RELOC_AARCH64_MOVW_G0_S:
- case BFD_RELOC_AARCH64_MOVW_G1_S:
- case BFD_RELOC_AARCH64_MOVW_G2_S:
+ case BFD_RELOC_AARCH64_LDST8_LO12:
case BFD_RELOC_AARCH64_MOVW_G0:
case BFD_RELOC_AARCH64_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_G0_S:
case BFD_RELOC_AARCH64_MOVW_G1:
case BFD_RELOC_AARCH64_MOVW_G1_NC:
+ case BFD_RELOC_AARCH64_MOVW_G1_S:
case BFD_RELOC_AARCH64_MOVW_G2:
case BFD_RELOC_AARCH64_MOVW_G2_NC:
+ case BFD_RELOC_AARCH64_MOVW_G2_S:
case BFD_RELOC_AARCH64_MOVW_G3:
- case BFD_RELOC_AARCH64_16_PCREL:
- case BFD_RELOC_AARCH64_32_PCREL:
- case BFD_RELOC_AARCH64_64_PCREL:
case BFD_RELOC_AARCH64_TSTBR14:
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
signed_addend, weak_undef_p);
break;
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
if (globals->root.sgot == NULL)
BFD_ASSERT (h != NULL);
if (h != NULL)
{
+ bfd_vma addend = 0;
value = aarch64_calculate_got_entry_vma (h, globals, info, value,
output_bfd,
unresolved_reloc_p);
+ if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
+ || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
+ addend = (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
- 0, weak_undef_p);
+ addend, weak_undef_p);
}
+ else
+ {
+ bfd_vma addend = 0;
+ struct elf_aarch64_local_symbol *locals
+ = elf_aarch64_locals (input_bfd);
+
+ if (locals == NULL)
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ (*_bfd_error_handler)
+ (_("%B: Local symbol descriptor table be NULL when applying "
+ "relocation %s against local symbol"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name);
+ abort ();
+ }
+
+ off = symbol_got_offset (input_bfd, h, r_symndx);
+ base_got = globals->root.sgot;
+ bfd_vma got_entry_addr = (base_got->output_section->vma
+ + base_got->output_offset + off);
+
+ if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+ {
+ bfd_put_64 (output_bfd, value, base_got->contents + off);
+
+ if (bfd_link_pic (info))
+ {
+ asection *s;
+ Elf_Internal_Rela outrel;
+
+ /* For local symbol, we have done absolute relocation in static
+ linking stageh. While for share library, we need to update
+ the content of GOT entry according to the share objects
+ loading base address. So we need to generate a
+ R_AARCH64_RELATIVE reloc for dynamic linker. */
+ s = globals->root.srelgot;
+ if (s == NULL)
+ abort ();
+
+ outrel.r_offset = got_entry_addr;
+ outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
+ outrel.r_addend = value;
+ elf_append_rela (output_bfd, s, &outrel);
+ }
+
+ symbol_got_offset_mark (input_bfd, h, r_symndx);
+ }
+
+ /* Update the relocation value to GOT entry addr as we have transformed
+ the direct data access into indirect data access through GOT. */
+ value = got_entry_addr;
+
+ if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
+ || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
+ addend = base_got->output_section->vma + base_got->output_offset;
+
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ addend, weak_undef_p);
+ }
+
+ break;
+
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ if (h != NULL)
+ value = aarch64_calculate_got_entry_vma (h, globals, info, value,
+ output_bfd,
+ unresolved_reloc_p);
+ else
+ {
+ struct elf_aarch64_local_symbol *locals
+ = elf_aarch64_locals (input_bfd);
+
+ if (locals == NULL)
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ (*_bfd_error_handler)
+ (_("%B: Local symbol descriptor table be NULL when applying "
+ "relocation %s against local symbol"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name);
+ abort ();
+ }
+
+ off = symbol_got_offset (input_bfd, h, r_symndx);
+ base_got = globals->root.sgot;
+ if (base_got == NULL)
+ abort ();
+
+ bfd_vma got_entry_addr = (base_got->output_section->vma
+ + base_got->output_offset + off);
+
+ if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+ {
+ bfd_put_64 (output_bfd, value, base_got->contents + off);
+
+ if (bfd_link_pic (info))
+ {
+ asection *s;
+ Elf_Internal_Rela outrel;
+
+ /* For local symbol, we have done absolute relocation in static
+ linking stage. While for share library, we need to update
+ the content of GOT entry according to the share objects
+ loading base address. So we need to generate a
+ R_AARCH64_RELATIVE reloc for dynamic linker. */
+ s = globals->root.srelgot;
+ if (s == NULL)
+ abort ();
+
+ outrel.r_offset = got_entry_addr;
+ outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
+ outrel.r_addend = value;
+ elf_append_rela (output_bfd, s, &outrel);
+ }
+
+ symbol_got_offset_mark (input_bfd, h, r_symndx);
+ }
+ }
+
+ /* Update the relocation value to GOT entry addr as we have transformed
+ the direct data access into indirect data access through GOT. */
+ value = symbol_got_offset (input_bfd, h, r_symndx);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = FALSE;
break;
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
if (globals->root.sgot == NULL)
return bfd_reloc_notsupported;
value = (symbol_got_offset (input_bfd, h, r_symndx)
+ globals->root.sgot->output_section->vma
- + globals->root.sgot->output_section->output_offset);
+ + globals->root.sgot->output_offset);
+
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = FALSE;
+ break;
+
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ if (globals->root.sgot == NULL)
+ return bfd_reloc_notsupported;
+ value = symbol_got_offset (input_bfd, h, r_symndx);
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
0, weak_undef_p);
*unresolved_reloc_p = FALSE;
break;
+ case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ signed_addend - dtpoff_base (info),
+ weak_undef_p);
+ break;
+
case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
*unresolved_reloc_p = FALSE;
break;
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD:
- case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ if (globals->root.sgot == NULL)
+ return bfd_reloc_notsupported;
+ value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
+ + globals->root.sgotplt->output_section->vma
+ + globals->root.sgotplt->output_offset
+ + globals->sgotplt_jump_table_size);
+
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = FALSE;
+ break;
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
if (globals->root.sgot == NULL)
return bfd_reloc_notsupported;
value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
+ globals->root.sgotplt->output_section->vma
- + globals->root.sgotplt->output_section->output_offset
+ + globals->root.sgotplt->output_offset
+ globals->sgotplt_jump_table_size);
+ value -= (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
+
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
0, weak_undef_p);
*unresolved_reloc_p = FALSE;
howto, value);
}
-/* Handle TLS relaxations. Relaxing is possible for symbols that use
- R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
- link.
+/* Handle TLS relaxations. Relaxing is possible for symbols that use
+ R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
+ link.
+
+ Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
+ is to then call final_link_relocate. Return other values in the
+ case of error. */
+
+static bfd_reloc_status_type
+elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
+ bfd *input_bfd, bfd_byte *contents,
+ Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
+{
+ bfd_boolean is_local = h == NULL;
+ unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
+ unsigned long insn;
+
+ BFD_ASSERT (globals && input_bfd && contents && rel);
+
+ switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
+ {
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ if (is_local)
+ {
+ /* GD->LE relaxation:
+ adrp x0, :tlsgd:var => movz x0, :tprel_g1:var
+ or
+ adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var
+ */
+ bfd_putl32 (0xd2a00000, contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ adrp x0, :tlsgd:var => adrp x0, :gottprel:var
+ or
+ adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
+ */
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ BFD_ASSERT (0);
+ break;
+
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ if (is_local)
+ {
+ /* Tiny TLSDESC->LE relaxation:
+ ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var
+ adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var
+ .tlsdesccall var
+ blr x1 => nop
+ */
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
+ BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
+
+ rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
+ rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (0xd2a00000, contents + rel->r_offset);
+ bfd_putl32 (0xf2800000, contents + rel->r_offset + 4);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* Tiny TLSDESC->IE relaxation:
+ ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
+ adr x0, :tlsdesc:var => nop
+ .tlsdesccall var
+ blr x1 => nop
+ */
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
+ BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
+
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (0x58000000, contents + rel->r_offset);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ if (is_local)
+ {
+ /* Tiny GD->LE relaxation:
+ adr x0, :tlsgd:var => mrs x1, tpidr_el0
+ bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12
+ nop => add x0, x0, #:tprel_lo12_nc:x
+ */
+
+ /* First kill the tls_get_addr reloc on the bl instruction. */
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
+ bfd_putl32 (0x91400020, contents + rel->r_offset + 4);
+ bfd_putl32 (0x91000000, contents + rel->r_offset + 8);
- Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
- is to then call final_link_relocate. Return other values in the
- case of error. */
+ rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
+ rel[1].r_offset = rel->r_offset + 8;
-static bfd_reloc_status_type
-elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
- bfd *input_bfd, bfd_byte *contents,
- Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
-{
- bfd_boolean is_local = h == NULL;
- unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
- unsigned long insn;
+ /* Move the current relocation to the second instruction in
+ the sequence. */
+ rel->r_offset += 4;
+ rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_ADD_TPREL_HI12));
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* Tiny GD->IE relaxation:
+ adr x0, :tlsgd:var => ldr x0, :gottprel:var
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add x0, x0, x1
+ */
- BFD_ASSERT (globals && input_bfd && contents && rel);
+ /* First kill the tls_get_addr reloc on the bl instruction. */
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (0x58000000, contents + rel->r_offset);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
+ bfd_putl32 (0x8b000020, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+
+#if ARCH_SIZE == 64
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
+ BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
+ BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
- switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
- {
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
if (is_local)
{
- /* GD->LE relaxation:
- adrp x0, :tlsgd:var => movz x0, :tprel_g1:var
- or
- adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var
+ /* Large GD->LE relaxation:
+ movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
+ movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
+ add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add x0, x0, x1
*/
- bfd_putl32 (0xd2a00000, contents + rel->r_offset);
- return bfd_reloc_continue;
+ rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
+ rel[2].r_offset = rel->r_offset + 8;
+
+ bfd_putl32 (0xd2c00000, contents + rel->r_offset + 0);
+ bfd_putl32 (0xf2a00000, contents + rel->r_offset + 4);
+ bfd_putl32 (0xf2800000, contents + rel->r_offset + 8);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
+ bfd_putl32 (0x8b000020, contents + rel->r_offset + 16);
}
else
{
- /* GD->IE relaxation:
- adrp x0, :tlsgd:var => adrp x0, :gottprel:var
- or
- adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
+ /* Large GD->IE relaxation:
+ movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
+ movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
+ add x0, gp, x0 => ldr x0, [gp, x0]
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add x0, x0, x1
*/
- insn = bfd_getl32 (contents + rel->r_offset);
- return bfd_reloc_continue;
+ rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
+ bfd_putl32 (0x58000000, contents + rel->r_offset + 8);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
+ bfd_putl32 (0x8b000020, contents + rel->r_offset + 16);
}
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ return bfd_reloc_continue;
+#endif
+
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ return bfd_reloc_continue;
case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
if (is_local)
ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var]
*/
insn = bfd_getl32 (contents + rel->r_offset);
- insn &= 0xfffffff0;
+ insn &= 0xffffffe0;
bfd_putl32 (insn, contents + rel->r_offset);
return bfd_reloc_continue;
}
return bfd_reloc_continue;
}
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_CALL:
/* GD->IE/LE relaxation:
bfd_putl32 (INSN_NOP, contents + rel->r_offset);
return bfd_reloc_ok;
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ if (is_local)
+ {
+ /* GD->LE relaxation:
+ ldr xd, [gp, xn] => movk x0, #:tprel_g0_nc:var
+ */
+ bfd_putl32 (0xf2800000, contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ ldr xd, [gp, xn] => ldr x0, [gp, xn]
+ */
+ insn = bfd_getl32 (contents + rel->r_offset);
+ insn &= 0xffffffe0;
+ bfd_putl32 (insn, contents + rel->r_offset);
+ return bfd_reloc_ok;
+ }
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ /* GD->LE relaxation:
+ movk xd, #:tlsdesc_off_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
+ GD->IE relaxation:
+ movk xd, #:tlsdesc_off_g0_nc:var => movk xd, #:gottprel_g0_nc:var
+ */
+ if (is_local)
+ bfd_putl32 (0xf2a00000, contents + rel->r_offset);
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ if (is_local)
+ {
+ /* GD->LE relaxation:
+ movz xd, #:tlsdesc_off_g1:var => movz x0, #:tprel_g2:var, lsl #32
+ */
+ bfd_putl32 (0xd2c00000, contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ movz xd, #:tlsdesc_off_g1:var => movz xd, #:gottprel_g1:var, lsl #16
+ */
+ insn = bfd_getl32 (contents + rel->r_offset);
+ bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
/* IE->LE relaxation:
adrp xd, :gottprel:var => movz xd, :tprel_g1:var
}
return bfd_reloc_continue;
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ /* LD->LE relaxation (tiny):
+ adr x0, :tlsldm:x => mrs x0, tpidr_el0
+ bl __tls_get_addr => add x0, x0, TCB_SIZE
+ */
+ if (is_local)
+ {
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
+ /* No need of CALL26 relocation for tls_get_addr. */
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
+ bfd_putl32 (0x91004000, contents + rel->r_offset + 4);
+ return bfd_reloc_ok;
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ /* LD->LE relaxation (small):
+ adrp x0, :tlsldm:x => mrs x0, tpidr_el0
+ */
+ if (is_local)
+ {
+ bfd_putl32 (0xd53bd040, contents + rel->r_offset);
+ return bfd_reloc_ok;
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ /* LD->LE relaxation (small):
+ add x0, #:tlsldm_lo12:x => add x0, x0, TCB_SIZE
+ bl __tls_get_addr => nop
+ */
+ if (is_local)
+ {
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
+ /* No need of CALL26 relocation for tls_get_addr. */
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ bfd_putl32 (0x91004000, contents + rel->r_offset + 0);
+ bfd_putl32 (0xd503201f, contents + rel->r_offset + 4);
+ return bfd_reloc_ok;
+ }
+ return bfd_reloc_continue;
+
default:
return bfd_reloc_continue;
}
}
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+
+ /* Relocate against local STT_GNU_IFUNC symbol. */
+ if (!bfd_link_relocatable (info)
+ && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
+ {
+ h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
+ rel, FALSE);
+ if (h == NULL)
+ abort ();
+
+ /* Set STT_GNU_IFUNC symbol value. */
+ h->root.u.def.value = sym->st_value;
+ h->root.u.def.section = sec;
+ }
}
else
{
- bfd_boolean warned;
+ bfd_boolean warned, ignored;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
- unresolved_reloc, warned);
+ unresolved_reloc, warned, ignored);
sym_type = h->type;
}
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
rel, 1, relend, howto, 0, contents);
- if (info->relocatable)
- {
- /* This is a relocatable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- rel->r_addend += sec->output_offset;
- continue;
- }
+ if (bfd_link_relocatable (info))
+ continue;
if (h != NULL)
name = h->root.root.string;
input_section, contents, rel,
relocation, info, sec,
h, &unresolved_reloc,
- save_addend, &addend);
+ save_addend, &addend, sym);
switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
{
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
{
bfd_boolean need_relocs = FALSE;
indx = h && h->dynindx != -1 ? h->dynindx : 0;
need_relocs =
- (info->shared || indx != 0) &&
+ (bfd_link_pic (info) || indx != 0) &&
(h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak);
* RELOC_SIZE (htab);
bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
- if (indx == 0)
+ bfd_reloc_code_real_type real_type =
+ elfNN_aarch64_bfd_reloc_from_type (r_type);
+
+ if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
+ || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
+ || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
+ {
+ /* For local dynamic, don't generate DTPREL in any case.
+ Initialize the DTPREL slot into zero, so we get module
+ base address when invoke runtime TLS resolver. */
+ bfd_put_NN (output_bfd, 0,
+ globals->root.sgot->contents + off
+ + GOT_ENTRY_SIZE);
+ }
+ else if (indx == 0)
{
bfd_put_NN (output_bfd,
relocation - dtpoff_base (info),
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
{
bfd_boolean need_relocs = FALSE;
indx = h && h->dynindx != -1 ? h->dynindx : 0;
need_relocs =
- (info->shared || indx != 0) &&
+ (bfd_link_pic (info) || indx != 0) &&
(h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak);
}
break;
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- break;
-
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
{
bfd_boolean need_relocs = FALSE;
if (r != bfd_reloc_ok && r != bfd_reloc_continue)
{
+ bfd_reloc_code_real_type real_r_type
+ = elfNN_aarch64_bfd_reloc_from_type (r_type);
+
switch (r)
{
case bfd_reloc_overflow:
- /* If the overflowing reloc was to an undefined symbol,
- we have already printed one error message and there
- is no point complaining again. */
- if ((!h ||
- h->root.type != bfd_link_hash_undefined)
- && (!((*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section,
- rel->r_offset))))
+ if (!(*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset))
return FALSE;
+ if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
+ || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
+ {
+ (*info->callbacks->warning)
+ (info,
+ _("Too many GOT entries for -fpic, "
+ "please recompile with -fPIC"),
+ name, input_bfd, input_section, rel->r_offset);
+ return FALSE;
+ }
break;
case bfd_reloc_undefined:
return TRUE;
}
-/* Copy backend specific data from one object module to another. */
-
-static bfd_boolean
-elfNN_aarch64_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
-{
- flagword in_flags;
-
- if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
- return TRUE;
-
- in_flags = elf_elfheader (ibfd)->e_flags;
-
- elf_elfheader (obfd)->e_flags = in_flags;
- elf_flags_init (obfd) = TRUE;
-
- /* Also copy the EI_OSABI field. */
- elf_elfheader (obfd)->e_ident[EI_OSABI] =
- elf_elfheader (ibfd)->e_ident[EI_OSABI];
-
- /* Copy object attributes. */
- _bfd_elf_copy_obj_attributes (ibfd, obfd);
-
- return TRUE;
-}
-
/* Merge backend specific data from an object file to the output
object file when linking. */
struct elf_aarch64_local_symbol *locals;
const Elf_Internal_Rela *rel, *relend;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
htab = elf_aarch64_hash_table (info);
if (r_symndx >= symtab_hdr->sh_info)
{
- struct elf_aarch64_link_hash_entry *eh;
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
- eh = (struct elf_aarch64_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- {
- if (p->sec == sec)
- {
- /* Everything must go for SEC. */
- *pp = p->next;
- break;
- }
- }
}
else
{
/* A local symbol. */
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
+
+ /* Check relocation against local STT_GNU_IFUNC symbol. */
+ if (isym != NULL
+ && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ {
+ h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE);
+ if (h == NULL)
+ abort ();
+ }
+ }
+
+ if (h)
+ {
+ struct elf_aarch64_link_hash_entry *eh;
+ struct elf_dyn_relocs **pp;
+ struct elf_dyn_relocs *p;
+
+ eh = (struct elf_aarch64_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
+ }
}
r_type = ELFNN_R_TYPE (rel->r_info);
switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx))
{
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
if (h != NULL)
{
if (h->got.refcount > 0)
h->got.refcount -= 1;
+
+ if (h->type == STT_GNU_IFUNC)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
}
else if (locals != NULL)
{
}
break;
- case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
- case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
- case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
- if (h != NULL && info->executable)
- {
- if (h->plt.refcount > 0)
- h->plt.refcount -= 1;
- }
- break;
-
case BFD_RELOC_AARCH64_CALL26:
case BFD_RELOC_AARCH64_JUMP26:
/* If this is a local symbol then we resolve it
h->plt.refcount -= 1;
break;
+ case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
+ case BFD_RELOC_AARCH64_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_G1_NC:
+ case BFD_RELOC_AARCH64_MOVW_G2_NC:
+ case BFD_RELOC_AARCH64_MOVW_G3:
case BFD_RELOC_AARCH64_NN:
- if (h != NULL && info->executable)
+ if (h != NULL && bfd_link_executable (info))
{
if (h->plt.refcount > 0)
h->plt.refcount -= 1;
/* If this is a function, put it in the procedure linkage table. We
will fill in the contents of the procedure linkage table later,
when we know the address of the .got section. */
- if (h->type == STT_FUNC || h->needs_plt)
+ if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
{
if (h->plt.refcount <= 0
- || SYMBOL_CALLS_LOCAL (info, h)
- || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak))
+ || (h->type != STT_GNU_IFUNC
+ && (SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))))
{
/* This case can occur if we saw a CALL26 reloc in
an input file, but the symbol wasn't referred to
return TRUE;
}
else
- /* It's possible that we incorrectly decided a .plt reloc was
- needed for an R_X86_64_PC32 reloc to a non-function sym in
- check_relocs. We can't decide accurately between function and
- non-function syms in check-relocs; Objects loaded later in
- the link may change h->type. So fix it now. */
+ /* Otherwise, reset to -1. */
h->plt.offset = (bfd_vma) - 1;
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (info->shared)
+ if (bfd_link_pic (info))
return TRUE;
/* If there are no references to this symbol that do not use the
s = htab->sdynbss;
- return _bfd_elf_adjust_dynamic_copy (h, s);
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
return TRUE;
}
+/* Create the .got section to hold the global offset table. */
+
+static bfd_boolean
+aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ flagword flags;
+ asection *s;
+ struct elf_link_hash_entry *h;
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ /* This function may be called more than once. */
+ s = bfd_get_linker_section (abfd, ".got");
+ if (s != NULL)
+ return TRUE;
+
+ flags = bed->dynamic_sec_flags;
+
+ s = bfd_make_section_anyway_with_flags (abfd,
+ (bed->rela_plts_and_copies_p
+ ? ".rela.got" : ".rel.got"),
+ (bed->dynamic_sec_flags
+ | SEC_READONLY));
+ if (s == NULL
+ || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
+ return FALSE;
+ htab->srelgot = s;
+
+ s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
+ if (s == NULL
+ || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
+ return FALSE;
+ htab->sgot = s;
+ htab->sgot->size += GOT_ENTRY_SIZE;
+
+ if (bed->want_got_sym)
+ {
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
+ (or .got.plt) section. We don't do this in the linker script
+ because we don't want to define the symbol if we are not creating
+ a global offset table. */
+ h = _bfd_elf_define_linkage_sym (abfd, info, s,
+ "_GLOBAL_OFFSET_TABLE_");
+ elf_hash_table (info)->hgot = h;
+ if (h == NULL)
+ return FALSE;
+ }
+
+ if (bed->want_got_plt)
+ {
+ s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
+ if (s == NULL
+ || !bfd_set_section_alignment (abfd, s,
+ bed->s->log_file_align))
+ return FALSE;
+ htab->sgotplt = s;
+ }
+
+ /* The first bit of the global offset table is the header. */
+ s->size += bed->got_header_size;
+
+ return TRUE;
+}
+
/* Look through the relocs for a section during the first phase. */
static bfd_boolean
struct elf_aarch64_link_hash_table *htab;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
BFD_ASSERT (is_aarch64_elf (abfd));
unsigned long r_symndx;
unsigned int r_type;
bfd_reloc_code_real_type bfd_r_type;
+ Elf_Internal_Sym *isym;
r_symndx = ELFNN_R_SYM (rel->r_info);
r_type = ELFNN_R_TYPE (rel->r_info);
- if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
- {
- (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
- r_symndx);
- return FALSE;
- }
+ if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
+ {
+ (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
+ r_symndx);
+ return FALSE;
+ }
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ /* A local symbol. */
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+ if (isym == NULL)
+ return FALSE;
+
+ /* Check relocation against local STT_GNU_IFUNC symbol. */
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ {
+ h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
+ TRUE);
+ if (h == NULL)
+ return FALSE;
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
+ /* Fake a STT_GNU_IFUNC symbol. */
+ h->type = STT_GNU_IFUNC;
+ h->def_regular = 1;
+ h->ref_regular = 1;
+ h->forced_local = 1;
+ h->root.type = bfd_link_hash_defined;
+ }
+ else
+ h = NULL;
+ }
else
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
/* Could be done earlier, if h were already available. */
bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
+ if (h != NULL)
+ {
+ /* Create the ifunc sections for static executables. If we
+ never see an indirect function symbol nor we are building
+ a static executable, those sections will be empty and
+ won't appear in output. */
+ switch (bfd_r_type)
+ {
+ default:
+ break;
+
+ case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_JUMP26:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_NN:
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
+ return FALSE;
+ break;
+ }
+
+ /* It is referenced by a non-shared object. */
+ h->ref_regular = 1;
+ h->root.non_ir_ref = 1;
+ }
+
switch (bfd_r_type)
{
case BFD_RELOC_AARCH64_NN:
if (h != NULL)
{
- if (!info->shared)
+ if (!bfd_link_pic (info))
h->non_got_ref = 1;
h->plt.refcount += 1;
/* No need to do anything if we're not creating a shared
object. */
- if (! info->shared)
+ if (! bfd_link_pic (info))
break;
{
htab->root.dynobj = abfd;
sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->root.dynobj, 3, abfd, /*rela? */ TRUE);
+ (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
if (sreloc == NULL)
return FALSE;
asection *s;
void **vpp;
- Elf_Internal_Sym *isym;
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
abfd, r_symndx);
/* RR: We probably want to keep a consistency check that
there are no dangling GOT_PAGE relocs. */
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
{
unsigned got_type;
unsigned old_got_type;
}
}
- if (htab->root.sgot == NULL)
- {
- if (htab->root.dynobj == NULL)
- htab->root.dynobj = abfd;
- if (!_bfd_elf_create_got_section (htab->root.dynobj, info))
- return FALSE;
- }
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
+ return FALSE;
break;
}
+ case BFD_RELOC_AARCH64_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_G1_NC:
+ case BFD_RELOC_AARCH64_MOVW_G2_NC:
+ case BFD_RELOC_AARCH64_MOVW_G3:
+ if (bfd_link_pic (info))
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ (*_bfd_error_handler)
+ (_("%B: relocation %s against `%s' can not be used when making "
+ "a shared object; recompile with -fPIC"),
+ abfd, elfNN_aarch64_howto_table[howto_index].name,
+ (h) ? h->root.root.string : "a local symbol");
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
- if (h != NULL && info->executable)
+ if (h != NULL && bfd_link_executable (info))
{
/* If this reloc is in a read-only section, we might
need a copy reloc. We can't check reliably at this
continue;
h->needs_plt = 1;
- h->plt.refcount += 1;
+ if (h->plt.refcount <= 0)
+ h->plt.refcount = 1;
+ else
+ h->plt.refcount += 1;
break;
default:
static bfd_boolean
aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
- asection *section,
asymbol **symbols,
+ asection *section,
bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr)
static bfd_boolean
elfNN_aarch64_find_nearest_line (bfd *abfd,
- asection *section,
asymbol **symbols,
+ asection *section,
bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr,
- unsigned int *line_ptr)
+ unsigned int *line_ptr,
+ unsigned int *discriminator_ptr)
{
bfd_boolean found = FALSE;
- /* We skip _bfd_dwarf1_find_nearest_line since no known AArch64
- toolchain uses it. */
-
- if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
- section, symbols, offset,
+ if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
filename_ptr, functionname_ptr,
- line_ptr, NULL, 0,
+ line_ptr, discriminator_ptr,
+ dwarf_debug_sections, 0,
&elf_tdata (abfd)->dwarf2_find_line_info))
{
if (!*functionname_ptr)
- aarch64_elf_find_function (abfd, section, symbols, offset,
+ aarch64_elf_find_function (abfd, symbols, section, offset,
*filename_ptr ? NULL : filename_ptr,
functionname_ptr);
return TRUE;
}
+ /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
+ toolchain uses DWARF1. */
+
if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
&found, filename_ptr,
functionname_ptr, line_ptr,
if (symbols == NULL)
return FALSE;
- if (!aarch64_elf_find_function (abfd, section, symbols, offset,
+ if (!aarch64_elf_find_function (abfd, symbols, section, offset,
filename_ptr, functionname_ptr))
return FALSE;
static void
elfNN_aarch64_post_process_headers (bfd *abfd,
- struct bfd_link_info *link_info
- ATTRIBUTE_UNUSED)
+ struct bfd_link_info *link_info)
{
Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
i_ehdrp = elf_elfheader (abfd);
- i_ehdrp->e_ident[EI_OSABI] = 0;
i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
+
+ _bfd_elf_post_process_headers (abfd, link_info);
}
static enum elf_reloc_type_class
}
}
-/* Set the right machine number for an AArch64 ELF file. */
-
-static bfd_boolean
-elfNN_aarch64_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
-{
- if (hdr->sh_type == SHT_NOTE)
- *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
-
- return TRUE;
-}
-
/* Handle an AArch64 specific section when reading an object file. This is
called when bfd_section_from_shdr finds a section with an unknown
type. */
return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
}
-
-
-/* Output mapping symbols for PLT entries associated with H. */
-
-static bfd_boolean
-elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf)
-{
- output_arch_syminfo *osi = (output_arch_syminfo *) inf;
- bfd_vma addr;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (h->root.type == bfd_link_hash_warning)
- /* When warning symbols are created, they **replace** the "real"
- entry in the hash table, thus we never get to see the real
- symbol in a hash traversal. So look at it now. */
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
- if (h->plt.offset == (bfd_vma) - 1)
- return TRUE;
-
- addr = h->plt.offset;
- if (addr == 32)
- {
- if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
- return FALSE;
- }
- return TRUE;
-}
-
-
/* Output a single local symbol for a generated stub. */
static bfd_boolean
if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
return FALSE;
break;
+ case aarch64_stub_erratum_835769_veneer:
+ if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
+ sizeof (aarch64_erratum_835769_stub)))
+ return FALSE;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
+ return FALSE;
+ break;
+ case aarch64_stub_erratum_843419_veneer:
+ if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
+ sizeof (aarch64_erratum_843419_stub)))
+ return FALSE;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
+ return FALSE;
+ break;
+
default:
- BFD_FAIL ();
+ abort ();
}
return TRUE;
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section);
+ /* The first instruction in a stub is always a branch. */
+ if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
+ return FALSE;
+
bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
&osi);
}
if (!htab->root.splt || htab->root.splt->size == 0)
return TRUE;
- /* For now live without mapping symbols for the plt. */
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, htab->root.splt->output_section);
osi.sec = htab->root.splt;
- elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map,
- (void *) &osi);
+ elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
return TRUE;
return _bfd_free_cached_info (abfd);
}
-static bfd_boolean
-elfNN_aarch64_is_function_type (unsigned int type)
-{
- return type == STT_FUNC;
-}
-
/* Create dynamic sections. This is different from the ARM backend in that
the got, plt, gotplt and their relocation sections are all created in the
standard part of the bfd elf backend. */
struct bfd_link_info *info)
{
struct elf_aarch64_link_hash_table *htab;
- struct elf_link_hash_entry *h;
+
+ /* We need to create .got section. */
+ if (!aarch64_elf_create_got_section (dynobj, info))
+ return FALSE;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
htab = elf_aarch64_hash_table (info);
htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
- if (!info->shared)
+ if (!bfd_link_pic (info))
htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
- if (!htab->sdynbss || (!info->shared && !htab->srelbss))
+ if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss))
abort ();
- /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
- dynobj's .got section. We don't do this in the linker script
- because we don't want to define the symbol if we are not creating
- a global offset table. */
- h = _bfd_elf_define_linkage_sym (dynobj, info,
- htab->root.sgot, "_GLOBAL_OFFSET_TABLE_");
- elf_hash_table (info)->hgot = h;
- if (h == NULL)
- return FALSE;
-
return TRUE;
}
info = (struct bfd_link_info *) inf;
htab = elf_aarch64_hash_table (info);
- if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
+ here if it is defined and referenced in a non-shared object. */
+ if (h->type == STT_GNU_IFUNC
+ && h->def_regular)
+ return TRUE;
+ else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
{
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
return FALSE;
}
- if (info->shared || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
+ if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->root.splt;
location in the .plt. This is required to make function
pointers compare as equal between the normal executable and
the shared library. */
- if (!info->shared && !h->def_regular)
+ if (!bfd_link_pic (info) && !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
htab->root.sgot->size += GOT_ENTRY_SIZE;
if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
- && (info->shared
+ && (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
{
htab->root.srelgot->size += RELOC_SIZE (htab);
indx = h && h->dynindx != -1 ? h->dynindx : 0;
if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
- && (info->shared
+ && (bfd_link_pic (info)
|| indx != 0
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
{
space for pc-relative relocs that have become local due to symbol
visibility changes. */
- if (info->shared)
+ if (bfd_link_pic (info))
{
/* Relocs that use pc_count are those that appear on a call
insn, or certain REL relocs that can generated via assembly.
return TRUE;
}
+/* Allocate space in .plt, .got and associated reloc sections for
+ ifunc dynamic relocs. */
+
+static bfd_boolean
+elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
+ void *inf)
+{
+ struct bfd_link_info *info;
+ struct elf_aarch64_link_hash_table *htab;
+ struct elf_aarch64_link_hash_entry *eh;
+
+ /* An example of a bfd_link_hash_indirect symbol is versioned
+ symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
+ -> __gxx_personality_v0(bfd_link_hash_defined)
+
+ There is no need to process bfd_link_hash_indirect symbols here
+ because we will also be presented with the concrete instance of
+ the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
+ called to copy all relevant data from the generic to the concrete
+ symbol instance.
+ */
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ info = (struct bfd_link_info *) inf;
+ htab = elf_aarch64_hash_table (info);
+
+ eh = (struct elf_aarch64_link_hash_entry *) h;
+
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
+ here if it is defined and referenced in a non-shared object. */
+ if (h->type == STT_GNU_IFUNC
+ && h->def_regular)
+ return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
+ &eh->dyn_relocs,
+ htab->plt_entry_size,
+ htab->plt_header_size,
+ GOT_ENTRY_SIZE);
+ return TRUE;
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ local dynamic relocs. */
+
+static bfd_boolean
+elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
+{
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) *slot;
+
+ if (h->type != STT_GNU_IFUNC
+ || !h->def_regular
+ || !h->ref_regular
+ || !h->forced_local
+ || h->root.type != bfd_link_hash_defined)
+ abort ();
+
+ return elfNN_aarch64_allocate_dynrelocs (h, inf);
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ local ifunc dynamic relocs. */
+
+static bfd_boolean
+elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
+{
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) *slot;
+
+ if (h->type != STT_GNU_IFUNC
+ || !h->def_regular
+ || !h->ref_regular
+ || !h->forced_local
+ || h->root.type != bfd_link_hash_defined)
+ abort ();
+
+ return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
+}
+
+/* Find any dynamic relocs that apply to read-only sections. */
+
+static bfd_boolean
+aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
+{
+ struct elf_aarch64_link_hash_entry * eh;
+ struct elf_dyn_relocs * p;
+
+ eh = (struct elf_aarch64_link_hash_entry *) h;
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *s = p->sec;
+
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ {
+ struct bfd_link_info *info = (struct bfd_link_info *) inf;
+
+ info->flags |= DF_TEXTREL;
+
+ /* Not an error, just cut short the traversal. */
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
/* This is the most important function of all . Innocuosly named
though ! */
if (htab->root.dynamic_sections_created)
{
- if (info->executable)
+ if (bfd_link_executable (info) && !info->nointerp)
{
s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
/* Set up .got offsets for local syms, and space for local dynamic
relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
struct elf_aarch64_local_symbol *locals = NULL;
Elf_Internal_Shdr *symtab_hdr;
htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
}
- if (got_type & GOT_TLS_IE)
+ if (got_type & GOT_TLS_IE
+ || got_type & GOT_NORMAL)
{
locals[i].got_offset = htab->root.sgot->size;
htab->root.sgot->size += GOT_ENTRY_SIZE;
{
}
- if (got_type == GOT_NORMAL)
- {
- }
-
- if (info->shared)
+ if (bfd_link_pic (info))
{
if (got_type & GOT_TLSDESC_GD)
{
if (got_type & GOT_TLS_GD)
htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
- if (got_type & GOT_TLS_IE)
+ if (got_type & GOT_TLS_IE
+ || got_type & GOT_NORMAL)
htab->root.srelgot->size += RELOC_SIZE (htab);
}
}
elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
info);
+ /* Allocate global ifunc sym .plt and .got entries, and space for global
+ ifunc sym dynamic relocs. */
+ elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
+ info);
+
+ /* Allocate .plt and .got entries, and space for local symbols. */
+ htab_traverse (htab->loc_hash_table,
+ elfNN_aarch64_allocate_local_dynrelocs,
+ info);
+
+ /* Allocate .plt and .got entries, and space for local ifunc symbols. */
+ htab_traverse (htab->loc_hash_table,
+ elfNN_aarch64_allocate_local_ifunc_dynrelocs,
+ info);
/* For every jump slot reserved in the sgotplt, reloc_count is
incremented. However, when we reserve space for TLS descriptors,
}
}
+ /* Init mapping symbols information to use later to distingush between
+ code and data while scanning for errata. */
+ if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
+ {
+ if (!is_aarch64_elf (ibfd))
+ continue;
+ bfd_elfNN_aarch64_init_maps (ibfd);
+ }
+
/* We now have determined the sizes of the various dynamic sections.
Allocate memory for them. */
relocs = FALSE;
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
/* If any dynamic relocs apply to a read-only section,
then we need a DT_TEXTREL entry. */
+ if ((info->flags & DF_TEXTREL) == 0)
+ elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs,
+ info);
+
if ((info->flags & DF_TEXTREL) != 0)
{
if (!add_dynamic_entry (DT_TEXTREL, 0))
static void
elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
struct elf_aarch64_link_hash_table
- *htab, bfd *output_bfd)
+ *htab, bfd *output_bfd,
+ struct bfd_link_info *info)
{
bfd_byte *plt_entry;
bfd_vma plt_index;
bfd_vma plt_entry_address;
Elf_Internal_Rela rela;
bfd_byte *loc;
+ asection *plt, *gotplt, *relplt;
- plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
+ /* When building a static executable, use .iplt, .igot.plt and
+ .rela.iplt sections for STT_GNU_IFUNC symbols. */
+ if (htab->root.splt != NULL)
+ {
+ plt = htab->root.splt;
+ gotplt = htab->root.sgotplt;
+ relplt = htab->root.srelplt;
+ }
+ else
+ {
+ plt = htab->root.iplt;
+ gotplt = htab->root.igotplt;
+ relplt = htab->root.irelplt;
+ }
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first entry in the procedure linkage table is reserved.
+
+ Get the offset into the .got table of the entry that
+ corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
+ bytes. The first three are reserved for the dynamic linker.
+
+ For static executables, we don't reserve anything. */
- /* Offset in the GOT is PLT index plus got GOT headers(3)
- times GOT_ENTRY_SIZE. */
- got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
- plt_entry = htab->root.splt->contents + h->plt.offset;
- plt_entry_address = htab->root.splt->output_section->vma
- + htab->root.splt->output_section->output_offset + h->plt.offset;
- gotplt_entry_address = htab->root.sgotplt->output_section->vma +
- htab->root.sgotplt->output_offset + got_offset;
+ if (plt == htab->root.splt)
+ {
+ plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
+ got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
+ }
+ else
+ {
+ plt_index = h->plt.offset / htab->plt_entry_size;
+ got_offset = plt_index * GOT_ENTRY_SIZE;
+ }
+
+ plt_entry = plt->contents + h->plt.offset;
+ plt_entry_address = plt->output_section->vma
+ + plt->output_offset + h->plt.offset;
+ gotplt_entry_address = gotplt->output_section->vma +
+ gotplt->output_offset + got_offset;
/* Copy in the boiler-plate for the PLTn entry. */
memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
plt_entry + 4,
PG_OFFSET (gotplt_entry_address));
- /* Fill in the the lo12 bits for the add from the pltgot entry. */
+ /* Fill in the lo12 bits for the add from the pltgot entry. */
elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
plt_entry + 8,
PG_OFFSET (gotplt_entry_address));
/* All the GOTPLT Entries are essentially initialized to PLT0. */
bfd_put_NN (output_bfd,
- (htab->root.splt->output_section->vma
- + htab->root.splt->output_offset),
- htab->root.sgotplt->contents + got_offset);
+ plt->output_section->vma + plt->output_offset,
+ gotplt->contents + got_offset);
- /* Fill in the entry in the .rela.plt section. */
rela.r_offset = gotplt_entry_address;
- rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
- rela.r_addend = 0;
+
+ if (h->dynindx == -1
+ || ((bfd_link_executable (info)
+ || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ && h->def_regular
+ && h->type == STT_GNU_IFUNC))
+ {
+ /* If an STT_GNU_IFUNC symbol is locally defined, generate
+ R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
+ rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
+ rela.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
+ rela.r_addend = 0;
+ }
/* Compute the relocation entry to used based on PLT index and do
not adjust reloc_count. The reloc_count has already been adjusted
to account for this entry. */
- loc = htab->root.srelplt->contents + plt_index * RELOC_SIZE (htab);
+ loc = relplt->contents + plt_index * RELOC_SIZE (htab);
bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
}
{
asection *tls_sec;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
tls_sec = elf_hash_table (info)->tls_sec;
if (h->plt.offset != (bfd_vma) - 1)
{
+ asection *plt, *gotplt, *relplt;
+
/* This symbol has an entry in the procedure linkage table. Set
it up. */
- if (h->dynindx == -1
- || htab->root.splt == NULL
- || htab->root.sgotplt == NULL || htab->root.srelplt == NULL)
+ /* When building a static executable, use .iplt, .igot.plt and
+ .rela.iplt sections for STT_GNU_IFUNC symbols. */
+ if (htab->root.splt != NULL)
+ {
+ plt = htab->root.splt;
+ gotplt = htab->root.sgotplt;
+ relplt = htab->root.srelplt;
+ }
+ else
+ {
+ plt = htab->root.iplt;
+ gotplt = htab->root.igotplt;
+ relplt = htab->root.irelplt;
+ }
+
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
+ if ((h->dynindx == -1
+ && !((h->forced_local || bfd_link_executable (info))
+ && h->def_regular
+ && h->type == STT_GNU_IFUNC))
+ || plt == NULL
+ || gotplt == NULL
+ || relplt == NULL)
abort ();
- elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd);
+ elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
if (!h->def_regular)
{
/* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. This is a clue
- for the dynamic linker, to make function pointer
- comparisons work between an application and shared
- library. */
+ the .plt section. */
sym->st_shndx = SHN_UNDEF;
+ /* If the symbol is weak we need to clear the value.
+ Otherwise, the PLT entry would provide a definition for
+ the symbol even if the symbol wasn't defined anywhere,
+ and so the symbol would never be NULL. Leave the value if
+ there were any relocations where pointer equality matters
+ (this is a clue for the dynamic linker, to make function
+ pointer comparisons work between an application and shared
+ library). */
+ if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
+ sym->st_value = 0;
}
}
+ htab->root.sgot->output_offset
+ (h->got.offset & ~(bfd_vma) 1));
- if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h))
+ if (h->def_regular
+ && h->type == STT_GNU_IFUNC)
+ {
+ if (bfd_link_pic (info))
+ {
+ /* Generate R_AARCH64_GLOB_DAT. */
+ goto do_glob_dat;
+ }
+ else
+ {
+ asection *plt;
+
+ if (!h->pointer_equality_needed)
+ abort ();
+
+ /* For non-shared object, we can't use .got.plt, which
+ contains the real function address if we need pointer
+ equality. We load the GOT entry with the PLT entry. */
+ plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
+ bfd_put_NN (output_bfd, (plt->output_section->vma
+ + plt->output_offset
+ + h->plt.offset),
+ htab->root.sgot->contents
+ + (h->got.offset & ~(bfd_vma) 1));
+ return TRUE;
+ }
+ }
+ else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
{
if (!h->def_regular)
return FALSE;
}
else
{
+do_glob_dat:
BFD_ASSERT ((h->got.offset & 1) == 0);
bfd_put_NN (output_bfd, (bfd_vma) 0,
htab->root.sgot->contents + h->got.offset);
return TRUE;
}
+/* Finish up local dynamic symbol handling. We set the contents of
+ various dynamic sections here. */
+
+static bfd_boolean
+elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
+{
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) *slot;
+ struct bfd_link_info *info
+ = (struct bfd_link_info *) inf;
+
+ return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
+ info, h, NULL);
+}
+
static void
elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
struct elf_aarch64_link_hash_table
+ GOT_ENTRY_SIZE * 2);
plt_base = htab->root.splt->output_section->vma +
- htab->root.splt->output_section->output_offset;
+ htab->root.splt->output_offset;
/* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
break;
case DT_PLTRELSZ:
- s = htab->root.srelplt->output_section;
+ s = htab->root.srelplt;
dyn.d_un.d_val = s->size;
break;
about changing the DT_RELA entry. */
if (htab->root.srelplt != NULL)
{
- s = htab->root.srelplt->output_section;
+ s = htab->root.srelplt;
dyn.d_un.d_val -= s->size;
}
break;
/* Fill in the first three entries in the global offset table. */
if (htab->root.sgotplt->size > 0)
{
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- if (sdyn == NULL)
- bfd_put_NN (output_bfd, (bfd_vma) 0,
- htab->root.sgotplt->contents);
- else
- bfd_put_NN (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- htab->root.sgotplt->contents);
+ bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
+
/* Write GOT[1] and GOT[2], needed for the dynamic linker. */
bfd_put_NN (output_bfd,
(bfd_vma) 0,
htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
}
+ if (htab->root.sgot)
+ {
+ if (htab->root.sgot->size > 0)
+ {
+ bfd_vma addr =
+ sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
+ bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
+ }
+ }
+
elf_section_data (htab->root.sgotplt->output_section)->
this_hdr.sh_entsize = GOT_ENTRY_SIZE;
}
elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
= GOT_ENTRY_SIZE;
+ /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
+ htab_traverse (htab->loc_hash_table,
+ elfNN_aarch64_finish_local_dynamic_symbol,
+ info);
+
return TRUE;
}
#define bfd_elfNN_close_and_cleanup \
elfNN_aarch64_close_and_cleanup
-#define bfd_elfNN_bfd_copy_private_bfd_data \
- elfNN_aarch64_copy_private_bfd_data
-
#define bfd_elfNN_bfd_free_cached_info \
elfNN_aarch64_bfd_free_cached_info
#define bfd_elfNN_bfd_link_hash_table_create \
elfNN_aarch64_link_hash_table_create
-#define bfd_elfNN_bfd_link_hash_table_free \
- elfNN_aarch64_hash_table_free
-
#define bfd_elfNN_bfd_merge_private_bfd_data \
elfNN_aarch64_merge_private_bfd_data
#define elf_backend_init_index_section \
_bfd_elf_init_2_index_sections
-#define elf_backend_is_function_type \
- elfNN_aarch64_is_function_type
-
#define elf_backend_finish_dynamic_sections \
elfNN_aarch64_finish_dynamic_sections
#define elf_backend_reloc_type_class \
elfNN_aarch64_reloc_type_class
-#define elf_backend_section_flags \
- elfNN_aarch64_section_flags
-
#define elf_backend_section_from_shdr \
elfNN_aarch64_section_from_shdr
#define elf_backend_size_info \
elfNN_aarch64_size_info
+#define elf_backend_write_section \
+ elfNN_aarch64_write_section
+
#define elf_backend_can_refcount 1
#define elf_backend_can_gc_sections 1
#define elf_backend_plt_readonly 1
#define elf_backend_may_use_rel_p 0
#define elf_backend_may_use_rela_p 1
#define elf_backend_default_use_rela_p 1
+#define elf_backend_rela_normal 1
#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
#define elf_backend_default_execstack 0
+#define elf_backend_extern_protected_data 1
#undef elf_backend_obj_attrs_section
#define elf_backend_obj_attrs_section ".ARM.attributes"
#include "elfNN-target.h"
+
+/* CloudABI support. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
+
+#undef ELF_OSABI
+#define ELF_OSABI ELFOSABI_CLOUDABI
+
+#undef elfNN_bed
+#define elfNN_bed elfNN_aarch64_cloudabi_bed
+
+#include "elfNN-target.h"
projects / deliverable / binutils-gdb.git / blobdiff