/* 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.
#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_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 \
+#define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
+ ((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_LD_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
+ || (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_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_LD64_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_LD32_LO12_NC \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
- || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC)
+ || (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 */
+ /* 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 */
HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
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 */
- 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_G1), /* name */
- FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
- 16, /* 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_G1_NC), /* 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 */
- 0, /* rightshift */
+ /* 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) */
- 12, /* bitsize */
+ 9, /* bitsize */
FALSE, /* pc_relative */
- 0, /* bitpos */
+ 10, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
+ AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
+ 0x7fc00, /* src_mask */
+ 0x7fc00, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
+ /* 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_LDR), /* name */
+ AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* 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 */
+ /* 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_ADD), /* 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 */
- HOWTO (AARCH64_R (TLSDESC_CALL), /* 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_CALL), /* 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 (COPY), /* 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) */
- 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 (COPY), /* name */
- TRUE, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO (AARCH64_R (GLOB_DAT), /* 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 (GLOB_DAT), /* 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 (JUMP_SLOT), /* 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 (JUMP_SLOT), /* 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 (RELATIVE), /* 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 (RELATIVE), /* name */
- TRUE, /* partial_inplace */
- ALL_ONES, /* src_mask */
- ALL_ONES, /* 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 (TLS_DTPMOD), /* 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_dont, /* complain_on_overflow */
+ complain_overflow_unsigned, /* 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
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* 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 */
+ 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 */
-#if ARCH_SIZE == 64
- AARCH64_R_STR (TLS_DTPREL64), /* name */
-#else
- AARCH64_R_STR (TLS_DTPREL), /* name */
-#endif
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* 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 */
- 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 */
-#if ARCH_SIZE == 64
- AARCH64_R_STR (TLS_TPREL64), /* name */
-#else
- AARCH64_R_STR (TLS_TPREL), /* name */
-#endif
+ 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 (TLSDESC), /* 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 (TLSDESC), /* 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 (IRELATIVE), /* 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_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- AARCH64_R_STR (IRELATIVE), /* 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 */
- EMPTY_HOWTO (0),
-};
+ 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_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
+ FALSE, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ FALSE), /* pcrel_offset */
-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_dont, /* 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
{
- static bfd_boolean initialized_p = FALSE;
- /* Indexed by R_TYPE, values are offsets in the howto_table. */
- static unsigned int offsets[R_AARCH64_end];
+ bfd_vma vma;
+ char type;
+}
+elf_aarch64_section_map;
- if (initialized_p == FALSE)
+
+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
+{
+ /* The main hash table. */
+ struct elf_link_hash_table root;
+
+ /* 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;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* 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;
+ }
- 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;
+ /* Call the allocation method of the superclass. */
+ entry = bfd_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct elf_aarch64_stub_hash_entry *eh;
- initialized_p = TRUE;
+ /* 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;
}
- if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
- return BFD_RELOC_AARCH64_NONE;
-
- return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
+ 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;
- /* 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;
- }
+ 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 (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 (!slot)
+ return NULL;
- if (code == BFD_RELOC_AARCH64_NONE)
- return &elfNN_aarch64_howto_none;
+ if (*slot)
+ {
+ ret = (struct elf_aarch64_link_hash_entry *) *slot;
+ return &ret->root;
+ }
- return NULL;
+ 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;
}
-static reloc_howto_type *
-elfNN_aarch64_howto_from_type (unsigned int r_type)
+/* 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)
{
- bfd_reloc_code_real_type val;
- reloc_howto_type *howto;
+ struct elf_aarch64_link_hash_entry *edir, *eind;
-#if ARCH_SIZE == 32
- if (r_type > 256)
- {
- bfd_set_error (bfd_error_bad_value);
- return NULL;
- }
-#endif
+ edir = (struct elf_aarch64_link_hash_entry *) dir;
+ eind = (struct elf_aarch64_link_hash_entry *) ind;
- if (r_type == R_AARCH64_NONE)
- return &elfNN_aarch64_howto_none;
+ if (eind->dyn_relocs != NULL)
+ {
+ if (edir->dyn_relocs != NULL)
+ {
+ struct elf_dyn_relocs **pp;
+ struct elf_dyn_relocs *p;
- val = elfNN_aarch64_bfd_reloc_from_type (r_type);
- howto = elfNN_aarch64_howto_from_bfd_reloc (val);
+ /* 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;
- if (howto != NULL)
- return howto;
+ 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;
+ }
- bfd_set_error (bfd_error_bad_value);
- return NULL;
-}
+ edir->dyn_relocs = eind->dyn_relocs;
+ eind->dyn_relocs = NULL;
+ }
-static void
-elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
- Elf_Internal_Rela *elf_reloc)
-{
- unsigned int r_type;
+ 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;
+ }
+ }
- r_type = ELFNN_R_TYPE (elf_reloc->r_info);
- bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type);
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
}
-static reloc_howto_type *
-elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
+/* Destroy an AArch64 elf linker hash table. */
+
+static void
+elfNN_aarch64_link_hash_table_free (bfd *obfd)
{
- reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
+ struct elf_aarch64_link_hash_table *ret
+ = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
- if (howto != NULL)
- return howto;
+ 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_set_error (bfd_error_bad_value);
- return NULL;
+ bfd_hash_table_free (&ret->stub_hash_table);
+ _bfd_elf_link_hash_table_free (obfd);
}
-static reloc_howto_type *
-elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
+/* Create an AArch64 elf linker hash table. */
+
+static struct bfd_link_hash_table *
+elfNN_aarch64_link_hash_table_create (bfd *abfd)
{
- unsigned int i;
+ struct elf_aarch64_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
- 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];
+ ret = bfd_zmalloc (amt);
+ if (ret == NULL)
+ return 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))
+ {
+ free (ret);
+ return NULL;
+ }
-#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"
+ 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;
-/* 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"
+ 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;
+ }
+
+ 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;
-/* The name of the dynamic interpreter. This is put in the .interp
- section. */
-#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+ return &ret->root.root;
+}
-#define AARCH64_MAX_FWD_BRANCH_OFFSET \
- (((1 << 25) - 1) << 2)
-#define AARCH64_MAX_BWD_BRANCH_OFFSET \
- (-((1 << 25) << 2))
+static bfd_boolean
+aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
+ bfd_vma offset, bfd_vma value)
+{
+ reloc_howto_type *howto;
+ bfd_vma place;
-#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
-#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
+ howto = elfNN_aarch64_howto_from_type (r_type);
+ place = (input_section->output_section->vma + input_section->output_offset
+ + offset);
-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;
+ 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 int
-aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
+static enum elf_aarch64_stub_type
+aarch64_select_branch_stub (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);
+ if (aarch64_valid_for_adrp_p (value, place))
+ return aarch64_stub_adrp_branch;
+ return aarch64_stub_long_branch;
}
-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 */
-};
+/* Determine the type of stub needed, if any, for a call. */
-static const uint32_t aarch64_long_branch_stub[] =
+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)
{
-#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,
-};
+ 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;
-/* Section name for stubs is the associated section name plus this
- string. */
-#define STUB_SUFFIX ".stub"
+ if (st_type != STT_FUNC
+ && (sym_sec != bfd_abs_section_ptr))
+ return stub_type;
-enum elf_aarch64_stub_type
-{
- aarch64_stub_none,
- aarch64_stub_adrp_branch,
- aarch64_stub_long_branch,
-};
+ 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);
-struct elf_aarch64_stub_hash_entry
-{
- /* Base hash table entry structure. */
- struct bfd_hash_entry root;
+ /* Determine where the call point is. */
+ location = (input_sec->output_offset
+ + input_sec->output_section->vma + rel->r_offset);
- /* The stub section. */
- asection *stub_sec;
+ branch_offset = (bfd_signed_vma) (destination - location);
- /* Offset within stub_sec of the beginning of this stub. */
- bfd_vma stub_offset;
+ r_type = ELFNN_R_TYPE (rel->r_info);
- /* 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;
+ /* 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;
+ }
- enum elf_aarch64_stub_type stub_type;
+ return stub_type;
+}
- /* The symbol table entry, if any, that this was derived from. */
- struct elf_aarch64_link_hash_entry *h;
+/* Build a name for an entry in the stub hash table. */
- /* Destination symbol type */
- unsigned char st_type;
+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;
- /* 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 (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);
+ }
- /* 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;
-};
+ return stub_name;
+}
-/* Used to build a map of a section. This is required for mixed-endian
- code/data. */
+/* Look up an entry in the stub hash. Stub entries are cached because
+ creating the stub name takes a bit of time. */
-typedef struct elf_elf_section_map
+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)
{
- bfd_vma vma;
- char type;
-}
-elf_aarch64_section_map;
+ 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;
+ if ((input_section->flags & SEC_CODE) == 0)
+ return NULL;
-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;
+ /* 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;
-#define elf_aarch64_section_data(sec) \
- ((_aarch64_elf_section_data *) elf_section_data (sec))
+ 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;
-/* The size of the thread control block which is defined to be two pointers. */
-#define TCB_SIZE (ARCH_SIZE/8)*2
+ stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
+ if (stub_name == NULL)
+ return NULL;
-struct elf_aarch64_local_symbol
-{
- unsigned int got_type;
- bfd_signed_vma got_refcount;
- bfd_vma got_offset;
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
+ stub_name, FALSE, FALSE);
+ if (h != NULL)
+ h->stub_cache = stub_entry;
- /* 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.
+ free (stub_name);
+ }
- The magic value (bfd_vma) -1 indicates that an offset has not be
- allocated. */
- bfd_vma tlsdesc_got_jump_table_offset;
-};
+ return stub_entry;
+}
-struct elf_aarch64_obj_tdata
-{
- struct elf_obj_tdata root;
- /* local symbol descriptors */
- struct elf_aarch64_local_symbol *locals;
+/* Create a stub section. */
- /* Zero to warn when linking objects with incompatible enum sizes. */
- int no_enum_size_warning;
+static asection *
+_bfd_aarch64_create_stub_section (asection *section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ size_t namelen;
+ bfd_size_type len;
+ char *s_name;
- /* Zero to warn when linking objects with incompatible wchar_t sizes. */
- int no_wchar_size_warning;
-};
+ namelen = strlen (section->name);
+ len = namelen + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (htab->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
-#define elf_aarch64_tdata(bfd) \
- ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
+ memcpy (s_name, section->name, namelen);
+ memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
+ return (*htab->add_stub_section) (s_name, section);
+}
-#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 for a link section.
-static bfd_boolean
-elfNN_aarch64_mkobject (bfd *abfd)
+ Fix or create the stub section used to collect stubs attached to
+ the specified link section. */
+
+static asection *
+_bfd_aarch64_get_stub_for_link_section (asection *link_section,
+ struct elf_aarch64_link_hash_table *htab)
{
- return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
- AARCH64_ELF_DATA);
+ 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_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))
+/* Find or create a stub section in the stub group for an input
+ section. */
-/* AArch64 ELF linker hash entry. */
-struct elf_aarch64_link_hash_entry
+static asection *
+_bfd_aarch64_create_or_find_stub_sec (asection *section,
+ struct elf_aarch64_link_hash_table *htab)
{
- struct elf_link_hash_entry root;
+ asection *link_sec = htab->stub_group[section->id].link_sec;
+ return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
+}
- /* 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;
+/* 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. */
- /* Bit mask representing the type of GOT entry(s) if any required by
- this symbol. */
- unsigned int got_type;
+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)
+{
+ asection *link_sec;
+ asection *stub_sec;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
- /* A pointer to the most recently used stub hash entry against this
- symbol. */
- struct elf_aarch64_stub_hash_entry *stub_cache;
+ link_sec = htab->stub_group[section->id].link_sec;
+ stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
- /* 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.
+ /* 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;
+ }
- The magic value (bfd_vma) -1 indicates that an offset has not
- be allocated. */
- bfd_vma tlsdesc_got_jump_table_offset;
-};
+ stub_entry->stub_sec = stub_sec;
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_sec;
-static unsigned int
-elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
- bfd *abfd,
- unsigned long r_symndx)
+ return stub_entry;
+}
+
+/* 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 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;
+ 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;
- /* Nonzero to force PIC branch veneers. */
- int pic_veneer;
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
- /* The number of bytes in the initial entry in the PLT. */
- bfd_size_type plt_header_size;
+ stub_sec = stub_entry->stub_sec;
- /* The number of bytes in the subsequent PLT etries. */
- bfd_size_type plt_entry_size;
+ /* 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;
- /* Short-cuts to get to dynamic linker sections. */
- asection *sdynbss;
- asection *srelbss;
+ stub_bfd = stub_sec->owner;
- /* Small local sym cache. */
- struct sym_cache sym_cache;
+ /* 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);
- /* For convenience in allocate_dynrelocs. */
- bfd *obfd;
+ 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);
- /* 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;
+ /* 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);
+ }
- /* The stub hash table. */
- struct bfd_hash_table stub_hash_table;
+ 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 ();
+ }
- /* Linker stub bfd. */
- bfd *stub_bfd;
+ for (i = 0; i < (template_size / sizeof template[0]); i++)
+ {
+ bfd_putl32 (template[i], loc);
+ loc += 4;
+ }
- /* Linker call-backs. */
- asection *(*add_stub_section) (const char *, asection *);
- void (*layout_sections_again) (void);
+ template_size = (template_size + 7) & ~7;
+ stub_sec->size += template_size;
- /* 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;
+ 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 ();
- /* Assorted information used by elfNN_aarch64_size_stubs. */
- unsigned int bfd_count;
- int top_index;
- asection **input_list;
+ if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 4, sym_value))
+ BFD_FAIL ();
+ break;
- /* 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;
+ 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;
- /* 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;
+ 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;
- /* Used by local STT_GNU_IFUNC symbols. */
- htab_t loc_hash_table;
- void * loc_hash_memory;
-};
+ 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;
-/* Create an entry in an AArch64 ELF linker hash table. */
+ default:
+ abort ();
+ }
-static struct bfd_hash_entry *
-elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
+ return TRUE;
+}
+
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes. */
+
+static bfd_boolean
+aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg ATTRIBUTE_UNUSED)
{
- struct elf_aarch64_link_hash_entry *ret =
- (struct elf_aarch64_link_hash_entry *) entry;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ int size;
- /* 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;
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
- /* 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)
+ switch (stub_entry->stub_type)
{
- 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;
+ 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 (struct bfd_hash_entry *) ret;
+ size = (size + 7) & ~7;
+ stub_entry->stub_sec->size += size;
+ return TRUE;
}
-/* Initialize an entry in the stub hash table. */
+/* External entry points for sizing and building linker stubs. */
-static struct bfd_hash_entry *
-stub_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table, const char *string)
+/* 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. */
+
+int
+elfNN_aarch64_setup_section_lists (bfd *output_bfd,
+ struct bfd_link_info *info)
{
- /* 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;
- }
+ 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);
- /* Call the allocation method of the superclass. */
- entry = bfd_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct elf_aarch64_stub_hash_entry *eh;
+ if (!is_elf_hash_table (htab))
+ return 0;
- /* 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;
+ /* 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)
+ {
+ bfd_count += 1;
+ for (section = input_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ if (top_id < section->id)
+ top_id = section->id;
+ }
}
+ htab->bfd_count = bfd_count;
- return entry;
-}
+ amt = sizeof (struct map_stub) * (top_id + 1);
+ htab->stub_group = bfd_zmalloc (amt);
+ if (htab->stub_group == NULL)
+ return -1;
-/* 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. */
+ /* 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;
+ }
-static hashval_t
-elfNN_aarch64_local_htab_hash (const void *ptr)
-{
- struct elf_link_hash_entry *h
- = (struct elf_link_hash_entry *) ptr;
- return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_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;
-/* Compare local hash entries. */
+ /* 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);
-static int
-elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
-{
- struct elf_link_hash_entry *h1
- = (struct elf_link_hash_entry *) ptr1;
- struct elf_link_hash_entry *h2
- = (struct elf_link_hash_entry *) ptr2;
+ for (section = output_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ if ((section->flags & SEC_CODE) != 0)
+ input_list[section->index] = NULL;
+ }
- return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
+ return 1;
}
-/* Find and/or create a hash entry for local symbol. */
-
-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)
-{
- 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;
+/* Used by elfNN_aarch64_next_input_section and group_sections. */
+#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
- 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);
+/* 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. */
- if (!slot)
- 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 (*slot)
+ if (isec->output_section->index <= htab->top_index)
{
- ret = (struct elf_aarch64_link_hash_entry *) *slot;
- return &ret->root;
- }
+ asection **list = htab->input_list + isec->output_section->index;
- 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;
+ 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;
}
-/* Copy the extra info we tack onto an elf_link_hash_entry. */
+/* 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_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
+group_sections (struct elf_aarch64_link_hash_table *htab,
+ bfd_size_type stub_group_size,
+ bfd_boolean stubs_always_before_branch)
{
- struct elf_aarch64_link_hash_entry *edir, *eind;
-
- edir = (struct elf_aarch64_link_hash_entry *) dir;
- eind = (struct elf_aarch64_link_hash_entry *) ind;
+ asection **list = htab->input_list + htab->top_index;
- if (eind->dyn_relocs != NULL)
+ do
{
- if (edir->dyn_relocs != NULL)
+ asection *tail = *list;
+
+ if (tail == bfd_abs_section_ptr)
+ continue;
+
+ while (tail != NULL)
{
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
+ asection *curr;
+ asection *prev;
+ bfd_size_type total;
- /* 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;
+ curr = tail;
+ total = tail->size;
+ while ((prev = PREV_SEC (curr)) != NULL
+ && ((total += curr->output_offset - prev->output_offset)
+ < stub_group_size))
+ curr = prev;
- 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;
+ /* 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;
}
- *pp = edir->dyn_relocs;
- }
-
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
- }
+ while (tail != curr && (tail = prev) != 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;
+ /* 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);
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+ free (htab->input_list);
}
-/* Create an AArch64 elf linker hash table. */
+#undef PREV_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);
+#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.
+
+ */
- ret = bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
+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;
- 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))
+ *pair = FALSE;
+ *load = FALSE;
+ if (AARCH64_LDST_EX (insn))
{
- free (ret);
- return NULL;
+ *rt = AARCH64_RT (insn);
+ *rt2 = *rt;
+ if (AARCH64_BIT (insn, 21) == 1)
+ {
+ *pair = TRUE;
+ *rt2 = AARCH64_RT2 (insn);
+ }
+ *load = AARCH64_LD (insn);
+ return TRUE;
}
-
- 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;
-
- if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
- sizeof (struct elf_aarch64_stub_hash_entry)))
+ else if (AARCH64_LDST_NAP (insn)
+ || AARCH64_LDSTP_PI (insn)
+ || AARCH64_LDSTP_O (insn)
+ || AARCH64_LDSTP_PRE (insn))
{
- free (ret);
- return NULL;
+ *pair = TRUE;
+ *rt = AARCH64_RT (insn);
+ *rt2 = AARCH64_RT2 (insn);
+ *load = AARCH64_LD (insn);
+ return TRUE;
}
-
- 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)
+ 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))
{
- free (ret);
- return NULL;
- }
-
- return &ret->root.root;
-}
-
-/* Free the derived linker hash table. */
-
-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;
-
- 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 (hash);
-}
-
-static bfd_boolean
-aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
- bfd_vma offset, bfd_vma value)
-{
- 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);
-
- 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 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;
-}
-
-/* Determine the type of stub needed, if any, for a call. */
+ *rt = AARCH64_RT (insn);
+ *load = AARCH64_BIT (insn, 22);
+ opcode = (insn >> 12) & 0xf;
+ switch (opcode)
+ {
+ case 0:
+ case 2:
+ *rt2 = *rt + 3;
+ break;
-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;
+ case 4:
+ case 6:
+ *rt2 = *rt + 2;
+ break;
- if (st_type != STT_FUNC)
- return stub_type;
+ case 7:
+ *rt2 = *rt;
+ break;
- globals = elf_aarch64_hash_table (info);
- via_plt_p = (globals->root.splt != NULL && hash != NULL
- && hash->root.plt.offset != (bfd_vma) - 1);
+ case 8:
+ case 10:
+ *rt2 = *rt + 1;
+ break;
- if (via_plt_p)
- return stub_type;
+ default:
+ return FALSE;
+ }
+ return TRUE;
+ }
+ else if (AARCH64_LDST_SIMD_S (insn)
+ || AARCH64_LDST_SIMD_S_PI (insn))
+ {
+ *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;
- /* Determine where the call point is. */
- location = (input_sec->output_offset
- + input_sec->output_section->vma + rel->r_offset);
+ case 1:
+ case 3:
+ case 5:
+ *rt2 = *rt + (r == 0 ? 2 : 3);
+ break;
- branch_offset = (bfd_signed_vma) (destination - location);
+ case 6:
+ *rt2 = *rt + r;
+ break;
- r_type = ELFNN_R_TYPE (rel->r_info);
+ case 7:
+ *rt2 = *rt + (r == 0 ? 2 : 3);
+ break;
- /* 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;
+ default:
+ return FALSE;
+ }
+ return TRUE;
}
- return stub_type;
+ return FALSE;
}
-/* Build a name for an entry in the stub hash table. */
+/* Return TRUE if INSN is multiply-accumulate. */
-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)
+static bfd_boolean
+aarch64_mlxl_p (uint32_t insn)
{
- char *stub_name;
- bfd_size_type len;
+ uint32_t op31 = AARCH64_OP31 (insn);
- 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);
- }
+ 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;
- 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. */
+/* 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 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_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
{
- 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;
-
- if ((input_section->flags & SEC_CODE) == 0)
- return NULL;
-
- /* 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;
-
- 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
+ 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_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_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;
+
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:
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_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_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:
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:
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,
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);
{
asection *plt;
const char *name;
- asection *base_got;
- bfd_vma off;
+ bfd_vma addend = 0;
if ((input_section->flags & SEC_ALLOC) == 0
|| h->plt.offset == (bfd_vma) -1)
/* Generate dynamic relocation only when there is a
non-GOT reference in a shared object. */
- if (info->shared && h->non_got_ref)
+ if (bfd_link_pic (info) && h->non_got_ref)
{
Elf_Internal_Rela outrel;
asection *sreloc;
if (h->dynindx == -1
|| h->forced_local
- || info->executable)
+ || bfd_link_executable (info))
{
/* This symbol is resolved locally. */
outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
return bfd_reloc_ok;
}
/* FALLTHROUGH */
- case BFD_RELOC_AARCH64_JUMP26:
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_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_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
base_got = globals->root.sgot;
off = h->got.offset;
value = aarch64_calculate_got_entry_vma (h, globals, info,
value, output_bfd,
unresolved_reloc_p);
+
+ 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_LD64_GOTOFF_LO15:
+ value = (value - globals->root.sgot->output_section->vma
+ - globals->root.sgot->output_offset);
+ default:
+ break;
+ }
+
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
- 0, weak_undef_p);
+ addend, weak_undef_p);
return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
- case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
break;
}
}
/* 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
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
{
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:
- if (globals->root.sgot == NULL)
- BFD_ASSERT (h != NULL);
+ 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,
+ 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:
if (h != NULL)
- {
value = aarch64_calculate_got_entry_vma (h, globals, info, value,
output_bfd,
unresolved_reloc_p);
- value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
- 0, weak_undef_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;
*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:
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_LD32_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ 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)
switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
{
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
if (is_local)
{
/* GD->LE relaxation:
or
adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
*/
- insn = bfd_getl32 (contents + rel->r_offset);
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);
+
+ 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;
+
+ /* 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
+ */
+
+ /* 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;
+ }
+
+ 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_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 (!info->relocatable
+ if (!bfd_link_relocatable (info)
&& ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
{
h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
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;
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_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:
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_LD_PREL19:
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:
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);
{
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_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_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_LD32_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
- 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:
+ 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 (h != NULL)
{
if (h->got.refcount > 0)
}
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;
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);
}
struct elf_aarch64_link_hash_table *htab;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
BFD_ASSERT (is_aarch64_elf (abfd));
default:
break;
- case BFD_RELOC_AARCH64_NN:
+ 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_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
- case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
- case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_NN:
if (htab->root.dynobj == NULL)
htab->root.dynobj = abfd;
if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
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;
{
there are no dangling GOT_PAGE relocs. */
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_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_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_LD32_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
- 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:
+ 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:
{
unsigned got_type;
unsigned old_got_type;
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
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;
}
}
-/* 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;
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 ();
return TRUE;
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 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 ! */
static bfd_boolean
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);
}
}
}
}
+ /* 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))
rela.r_offset = gotplt_entry_address;
if (h->dynindx == -1
- || ((info->executable
+ || ((bfd_link_executable (info)
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
{
asection *tls_sec;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
tls_sec = elf_hash_table (info)->tls_sec;
/* This symbol has an entry in the procedure linkage table. Set
it up. */
if ((h->dynindx == -1
- && !((h->forced_local || info->executable)
+ && !((h->forced_local || bfd_link_executable (info))
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
|| plt == NULL
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;
}
}
if (h->def_regular
&& h->type == STT_GNU_IFUNC)
{
- if (info->shared)
+ if (bfd_link_pic (info))
{
/* Generate R_AARCH64_GLOB_DAT. */
goto do_glob_dat;
return TRUE;
}
}
- else if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h))
+ else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
{
if (!h->def_regular)
return FALSE;
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;
#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_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"
projects / deliverable / binutils-gdb.git / blobdiff