diff options
Diffstat (limited to 'contrib/binutils/bfd/elf64-ppc.c')
| -rw-r--r-- | contrib/binutils/bfd/elf64-ppc.c | 691 |
1 files changed, 468 insertions, 223 deletions
diff --git a/contrib/binutils/bfd/elf64-ppc.c b/contrib/binutils/bfd/elf64-ppc.c index 6adc202..d25c25f 100644 --- a/contrib/binutils/bfd/elf64-ppc.c +++ b/contrib/binutils/bfd/elf64-ppc.c @@ -39,7 +39,21 @@ static reloc_howto_type *ppc64_elf_reloc_type_lookup PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); static void ppc64_elf_info_to_howto PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst)); -static bfd_reloc_status_type ppc64_elf_addr16_ha_reloc +static bfd_reloc_status_type ppc64_elf_ha_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_brtaken_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_sectoff_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_toc_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_toc_ha_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_toc64_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type ppc64_elf_unhandled_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); static boolean ppc64_elf_set_private_flags PARAMS ((bfd *, flagword)); @@ -101,12 +115,6 @@ static boolean ppc64_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); -/* Mask to set RA in memory instructions. */ -#define RA_REGISTER_MASK 0x001f0000 - -/* Value to shift register by to insert RA. */ -#define RA_REGISTER_SHIFT 16 - /* The name of the dynamic interpreter. This is put in the .interp section. */ #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" @@ -146,6 +154,10 @@ static boolean ppc64_elf_finish_dynamic_sections /* Pad with this. */ #define NOP 0x60000000 +/* Some other nops. */ +#define CROR_151515 0x4def7b82 +#define CROR_313131 0x4ffffb82 + /* .glink entries for the first 32k functions are two instructions. */ #define LI_R0_0 0x38000000 /* li %r0,0 */ #define B_DOT 0x48000000 /* b . */ @@ -273,7 +285,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_ha_reloc, /* special_function */ "R_PPC64_ADDR16_HA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -306,7 +318,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_brtaken_reloc, /* special_function */ "R_PPC64_ADDR14_BRTAKEN",/* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -323,7 +335,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_brtaken_reloc, /* special_function */ "R_PPC64_ADDR14_BRNTAKEN",/* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -370,7 +382,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { true, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_brtaken_reloc, /* special_function */ "R_PPC64_REL14_BRTAKEN", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -387,7 +399,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { true, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_brtaken_reloc, /* special_function */ "R_PPC64_REL14_BRNTAKEN",/* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -403,7 +415,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GOT16", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -419,7 +431,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GOT16_LO", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -435,7 +447,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GOT16_HI", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -451,7 +463,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont,/* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GOT16_HA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -470,7 +482,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_COPY", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -486,7 +498,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GLOB_DAT", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -502,7 +514,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_JMP_SLOT", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -580,7 +592,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLT32", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -612,7 +624,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLT16_LO", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -628,7 +640,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLT16_HI", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -644,31 +656,29 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLT16_HA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ false), /* pcrel_offset */ - /* 32-bit section relative relocation. */ - /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and - dst_mask=0. */ + /* 16-bit section relative relocation. */ HOWTO (R_PPC64_SECTOFF, /* type */ 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_sectoff_reloc, /* special_function */ "R_PPC64_SECTOFF", /* name */ false, /* partial_inplace */ 0, /* src_mask */ - 0, /* dst_mask */ - true), /* pcrel_offset */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ - /* 16-bit lower half section relative relocation. */ + /* Like R_PPC64_SECTOFF, but no overflow warning. */ HOWTO (R_PPC64_SECTOFF_LO, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ @@ -676,7 +686,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_sectoff_reloc, /* special_function */ "R_PPC64_SECTOFF_LO", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -691,7 +701,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_sectoff_reloc, /* special_function */ "R_PPC64_SECTOFF_HI", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -706,7 +716,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_sectoff_ha_reloc, /* special_function */ "R_PPC64_SECTOFF_HA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -714,8 +724,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false), /* pcrel_offset */ /* Like R_PPC64_REL24 without touching the two least significant - bits. */ - /* FIXME: Verify R_PPC64_ADDR30. */ + bits. Should have been named R_PPC64_REL30! */ HOWTO (R_PPC64_ADDR30, /* type */ 2, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -771,7 +780,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_ha_reloc, /* special_function */ "R_PPC64_ADDR16_HIGHERA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -802,7 +811,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_ha_reloc, /* special_function */ "R_PPC64_ADDR16_HIGHESTA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -847,7 +856,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLT64", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -864,7 +873,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { true, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTREL64", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -881,7 +890,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_toc_reloc, /* special_function */ "R_PPC64_TOC16", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -898,7 +907,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_toc_reloc, /* special_function */ "R_PPC64_TOC16_LO", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -915,7 +924,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_toc_reloc, /* special_function */ "R_PPC64_TOC16_HI", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -934,7 +943,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_toc_ha_reloc, /* special_function */ "R_PPC64_TOC16_HA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -951,7 +960,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_toc64_reloc, /* special_function */ "R_PPC64_TOC", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -974,7 +983,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTGOT16", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -990,7 +999,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTGOT16_LO", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1006,7 +1015,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTGOT16_HI", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1024,7 +1033,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont,/* complain_on_overflow */ - ppc64_elf_addr16_ha_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTGOT16_HA", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1069,7 +1078,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GOT16_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1084,7 +1093,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_GOT16_LO_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1099,7 +1108,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLT16_LO_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1107,21 +1116,19 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false), /* pcrel_offset */ /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ - /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and - dst_mask=0. */ HOWTO (R_PPC64_SECTOFF_DS, /* type */ 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_sectoff_reloc, /* special_function */ "R_PPC64_SECTOFF_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ - 0, /* dst_mask */ - true), /* pcrel_offset */ + 0xfffc, /* dst_mask */ + false), /* pcrel_offset */ /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ @@ -1131,7 +1138,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_sectoff_reloc, /* special_function */ "R_PPC64_SECTOFF_LO_DS",/* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1146,7 +1153,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_toc_reloc, /* special_function */ "R_PPC64_TOC16_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1161,7 +1168,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_toc_reloc, /* special_function */ "R_PPC64_TOC16_LO_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1177,7 +1184,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTGOT16_DS", /* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1193,7 +1200,7 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { false, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + ppc64_elf_unhandled_reloc, /* special_function */ "R_PPC64_PLTGOT16_LO_DS",/* name */ false, /* partial_inplace */ 0, /* src_mask */ @@ -1319,7 +1326,7 @@ ppc64_elf_reloc_type_lookup (abfd, code) break; case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA; break; - case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF; + case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF; break; case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO; break; @@ -1417,41 +1424,265 @@ ppc64_elf_info_to_howto (abfd, cache_ptr, dst) /* Handle the R_PPC_ADDR16_HA and similar relocs. */ static bfd_reloc_status_type -ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section, - output_bfd, error_message) - bfd *abfd ATTRIBUTE_UNUSED; +ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + /* Adjust the addend for sign extension of the low 16 bits. + We won't actually be using the low 16 bits, so trashing them + doesn't matter. */ + reloc_entry->addend += 0x8000; + return bfd_reloc_continue; +} + +static bfd_reloc_status_type +ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; arelent *reloc_entry; asymbol *symbol; - PTR data ATTRIBUTE_UNUSED; + PTR data; asection *input_section; bfd *output_bfd; - char **error_message ATTRIBUTE_UNUSED; + char **error_message; { - bfd_vma relocation; + long insn; + enum elf_ppc_reloc_type r_type; + bfd_size_type octets; + /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ + boolean is_power4 = false; + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + octets = reloc_entry->address * bfd_octets_per_byte (abfd); + insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); + insn &= ~(0x01 << 21); + r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type; + if (r_type == R_PPC64_ADDR14_BRTAKEN + || r_type == R_PPC64_REL14_BRTAKEN) + insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ + + if (is_power4) + { + /* Set 'a' bit. This is 0b00010 in BO field for branch + on CR(BI) insns (BO == 001at or 011at), and 0b01000 + for branch on CTR insns (BO == 1a00t or 1a01t). */ + if ((insn & (0x14 << 21)) == (0x04 << 21)) + insn |= 0x02 << 21; + else if ((insn & (0x14 << 21)) == (0x10 << 21)) + insn |= 0x08 << 21; + else + return bfd_reloc_continue; + } + else { - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; + bfd_vma target = 0; + bfd_vma from; + + if (!bfd_is_com_section (symbol->section)) + target = symbol->value; + target += symbol->section->output_section->vma; + target += symbol->section->output_offset; + target += reloc_entry->addend; + + from = (reloc_entry->address + + input_section->output_offset + + input_section->output_section->vma); + + /* Invert 'y' bit if not the default. */ + if ((bfd_signed_vma) (target - from) < 0) + insn ^= 0x01 << 21; } + bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets); + return bfd_reloc_continue; +} + +static bfd_reloc_status_type +ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); - if (reloc_entry->address > input_section->_cooked_size) - return bfd_reloc_outofrange; + /* Subtract the symbol section base address. */ + reloc_entry->addend -= symbol->section->output_section->vma; + return bfd_reloc_continue; +} - if (bfd_is_com_section (symbol->section)) - relocation = 0; - else - relocation = symbol->value; +static bfd_reloc_status_type +ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + /* Subtract the symbol section base address. */ + reloc_entry->addend -= symbol->section->output_section->vma; + + /* Adjust the addend for sign extension of the low 16 bits. */ + reloc_entry->addend += 0x8000; + return bfd_reloc_continue; +} + +static bfd_reloc_status_type +ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma TOCstart; + + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + TOCstart = _bfd_get_gp_value (input_section->output_section->owner); + if (TOCstart == 0) + TOCstart = ppc64_elf_toc (input_section->output_section->owner); - relocation += symbol->section->output_section->vma; - relocation += symbol->section->output_offset; - relocation += reloc_entry->addend; + /* Subtract the TOC base address. */ + reloc_entry->addend -= TOCstart + TOC_BASE_OFF; + return bfd_reloc_continue; +} + +static bfd_reloc_status_type +ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma TOCstart; + + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + TOCstart = _bfd_get_gp_value (input_section->output_section->owner); + if (TOCstart == 0) + TOCstart = ppc64_elf_toc (input_section->output_section->owner); - reloc_entry->addend += (relocation & 0x8000) << 1; + /* Subtract the TOC base address. */ + reloc_entry->addend -= TOCstart + TOC_BASE_OFF; + /* Adjust the addend for sign extension of the low 16 bits. */ + reloc_entry->addend += 0x8000; return bfd_reloc_continue; } +static bfd_reloc_status_type +ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma TOCstart; + bfd_size_type octets; + + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + TOCstart = _bfd_get_gp_value (input_section->output_section->owner); + if (TOCstart == 0) + TOCstart = ppc64_elf_toc (input_section->output_section->owner); + + octets = reloc_entry->address * bfd_octets_per_byte (abfd); + bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); + return bfd_reloc_ok; +} + +static bfd_reloc_status_type +ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + if (error_message != NULL) + { + static char buf[60]; + sprintf (buf, "generic linker can't handle %s", + reloc_entry->howto->name); + *error_message = buf; + } + return bfd_reloc_dangerous; +} + /* Function to set whether a module needs the -mrelocatable bit set. */ static boolean @@ -1731,6 +1962,9 @@ struct ppc_link_hash_table /* Set on error. */ int plt_overflow; + /* Set if we detect a reference undefined weak symbol. */ + unsigned int have_undefweak; + /* Small local sym to section mapping cache. */ struct sym_sec_cache sym_sec; }; @@ -1800,6 +2034,7 @@ ppc64_elf_link_hash_table_create (abfd) htab->sglink = NULL; htab->sfpr = NULL; htab->plt_overflow = 0; + htab->have_undefweak = 0; htab->sym_sec.abfd = NULL; return &htab->elf.root; @@ -2515,6 +2750,10 @@ func_desc_adjust (h, inf) if (!((struct ppc_link_hash_entry *) h)->is_func) return true; + if (h->root.type == bfd_link_hash_undefweak + && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR)) + htab->have_undefweak = true; + if (h->plt.refcount > 0 && h->root.root.string[0] == '.' && h->root.root.string[1] != '\0') @@ -2610,6 +2849,7 @@ ppc64_elf_func_desc_adjust (obfd, info) unsigned int lowest_restf = MAX_SAVE_FPR + 2; unsigned int i; struct elf_link_hash_entry *h; + bfd_byte *p; char sym[10]; htab = ppc_hash_table (info); @@ -2660,41 +2900,52 @@ ppc64_elf_func_desc_adjust (obfd, info) } } + elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info); + htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4); if (htab->sfpr->_raw_size == 0) { - _bfd_strip_section_from_output (info, htab->sfpr); - } - else - { - bfd_byte *p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, - htab->sfpr->_raw_size); - if (p == NULL) - return false; - htab->sfpr->contents = p; - - for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) + if (!htab->have_undefweak) { - unsigned int fpr = i << 21; - unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; - bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); - p += 4; + _bfd_strip_section_from_output (info, htab->sfpr); + return true; } + + htab->sfpr->_raw_size = 4; + } + + p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size); + if (p == NULL) + return false; + htab->sfpr->contents = p; + + for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) + { + unsigned int fpr = i << 21; + unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; + bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); + p += 4; + } + if (lowest_savef <= MAX_SAVE_FPR) + { bfd_put_32 (htab->elf.dynobj, BLR, p); p += 4; + } - for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) - { - unsigned int fpr = i << 21; - unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; - bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); - p += 4; - } - bfd_put_32 (htab->elf.dynobj, BLR, p); + for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) + { + unsigned int fpr = i << 21; + unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; + bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); p += 4; } + if (lowest_restf <= MAX_SAVE_FPR + || htab->sfpr->_raw_size == 4) + { + bfd_put_32 (htab->elf.dynobj, BLR, p); + } elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info); return true; @@ -3285,69 +3536,61 @@ ppc64_elf_size_dynamic_sections (output_bfd, info) return true; } -/* Called after we have seen all the input files/sections, but before - final symbol resolution and section placement has been determined. +/* Called after we have determined section placement. If sections + move, we'll be called again. Provide a value for TOCstart. */ - We use this hook to provide a value for TOCstart, which we store in - the output bfd elf_gp. */ - -boolean -ppc64_elf_set_toc (obfd, info) +bfd_vma +ppc64_elf_toc (obfd) bfd *obfd; - struct bfd_link_info *info; { - if (!info->relocateable) - { - asection *s; - bfd_vma TOCstart; + asection *s; + bfd_vma TOCstart; - /* The TOC consists of sections .got, .toc, .tocbss, .plt in that - order. The TOC starts where the first of these sections starts. */ - s = bfd_get_section_by_name (obfd, ".got"); - if (s == NULL) - s = bfd_get_section_by_name (obfd, ".toc"); + /* The TOC consists of sections .got, .toc, .tocbss, .plt in that + order. The TOC starts where the first of these sections starts. */ + s = bfd_get_section_by_name (obfd, ".got"); + if (s == NULL) + s = bfd_get_section_by_name (obfd, ".toc"); + if (s == NULL) + s = bfd_get_section_by_name (obfd, ".tocbss"); + if (s == NULL) + s = bfd_get_section_by_name (obfd, ".plt"); + if (s == NULL) + { + /* This may happen for + o references to TOC base (SYM@toc / TOC[tc0]) without a + .toc directive + o bad linker script + o --gc-sections and empty TOC sections + + FIXME: Warn user? */ + + /* Look for a likely section. We probably won't even be + using TOCstart. */ + for (s = obfd->sections; s != NULL; s = s->next) + if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) + == (SEC_ALLOC | SEC_SMALL_DATA)) + break; if (s == NULL) - s = bfd_get_section_by_name (obfd, ".tocbss"); + for (s = obfd->sections; s != NULL; s = s->next) + if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) + == (SEC_ALLOC | SEC_SMALL_DATA)) + break; if (s == NULL) - s = bfd_get_section_by_name (obfd, ".plt"); + for (s = obfd->sections; s != NULL; s = s->next) + if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) + break; if (s == NULL) - { - /* This may happen for - o references to TOC base (SYM@toc / TOC[tc0]) without a - .toc directive - o bad linker script - o --gc-sections and empty TOC sections - - FIXME: Warn user? */ - - /* Look for a likely section. We probably won't even be - using TOCstart. */ - for (s = obfd->sections; s != NULL; s = s->next) - if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) - == (SEC_ALLOC | SEC_SMALL_DATA)) - break; - if (s == NULL) - for (s = obfd->sections; s != NULL; s = s->next) - if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) - == (SEC_ALLOC | SEC_SMALL_DATA)) - break; - if (s == NULL) - for (s = obfd->sections; s != NULL; s = s->next) - if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) - break; - if (s == NULL) - for (s = obfd->sections; s != NULL; s = s->next) - if ((s->flags & SEC_ALLOC) == SEC_ALLOC) - break; - } + for (s = obfd->sections; s != NULL; s = s->next) + if ((s->flags & SEC_ALLOC) == SEC_ALLOC) + break; + } - TOCstart = 0; - if (s != NULL) - TOCstart = s->output_section->vma + s->output_offset; + TOCstart = 0; + if (s != NULL) + TOCstart = s->output_section->vma + s->output_offset; - elf_gp (obfd) = TOCstart; - } - return true; + return TOCstart; } /* PowerPC64 .plt entries are 24 bytes long, which doesn't divide @@ -3642,6 +3885,9 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ boolean is_power4 = false; + if (info->relocateable) + return true; + /* Initialize howto table if needed. */ if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) ppc_howto_init (); @@ -3668,32 +3914,11 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, unsigned long r_symndx; bfd_vma relocation; boolean unresolved_reloc; - boolean has_nop; long insn; + bfd_vma from; r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); r_symndx = ELF64_R_SYM (rel->r_info); - - if (info->relocateable) - { - /* 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 (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - sec = local_sections[r_symndx]; - rel->r_addend += sec->output_offset + sym->st_value; - } - } - continue; - } - - /* This is a final link. */ - offset = rel->r_offset; addend = rel->r_addend; r = bfd_reloc_other; @@ -3716,6 +3941,7 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, sym_name = "<local symbol>"; relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); + /* rel may have changed, update our copy of addend. */ addend = rel->r_addend; } else @@ -3791,8 +4017,12 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, } else { + from = (offset + + input_section->output_offset + + input_section->output_section->vma); + /* Invert 'y' bit if not the default. */ - if ((bfd_signed_vma) (relocation - offset) < 0) + if ((bfd_signed_vma) (relocation + addend - from) < 0) insn ^= 0x01 << 21; } @@ -3800,57 +4030,71 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, break; case R_PPC64_REL24: - case R_PPC64_ADDR24: - /* An ADDR24 or REL24 branching to a linkage function may be - followed by a nop that we have to replace with a ld in - order to restore the TOC base pointer. Only calls to - shared objects need to alter the TOC base. These are - recognized by their need for a PLT entry. */ - has_nop = 0; + /* A REL24 branching to a linkage function is followed by a + nop. We replace the nop with a ld in order to restore + the TOC base pointer. Only calls to shared objects need + to alter the TOC base. These are recognized by their + need for a PLT entry. */ if (h != NULL && h->plt.offset != (bfd_vma) -1 && htab->sstub != NULL) { - /* plt.offset here is the offset into the stub section. */ - relocation = (htab->sstub->output_section->vma - + htab->sstub->output_offset - + h->plt.offset); - unresolved_reloc = false; - - /* Make sure that there really is an instruction after - the branch that we can decode. */ + boolean can_plt_call = 0; + if (offset + 8 <= input_section->_cooked_size) { - bfd_byte *pnext; - - pnext = contents + offset + 4; - insn = bfd_get_32 (input_bfd, pnext); - - if (insn == 0x60000000 /* nop (ori r0,r0,0) */ - || insn == 0x4def7b82 /* cror 15,15,15 */ - || insn == 0x4ffffb82) /* cror 31,31,31 */ + insn = bfd_get_32 (input_bfd, contents + offset + 4); + if (insn == NOP + || insn == CROR_151515 || insn == CROR_313131) { - bfd_put_32 (input_bfd, - (bfd_vma) 0xe8410028, /* ld r2,40(r1) */ - pnext); - has_nop = 1; + bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1, + contents + offset + 4); + can_plt_call = 1; } } + + if (!can_plt_call) + { + /* If this is a plain branch rather than a branch + and link, don't require a nop. */ + insn = bfd_get_32 (input_bfd, contents + offset); + if ((insn & 1) == 0) + can_plt_call = 1; + } + + if (can_plt_call) + { + /* plt.offset here is the offset into the stub section. */ + relocation = (htab->sstub->output_section->vma + + htab->sstub->output_offset + + h->plt.offset); + addend = 0; + unresolved_reloc = false; + } } if (h != NULL && h->root.type == bfd_link_hash_undefweak - && r_type == R_PPC64_REL24 - && addend == 0 - && relocation == 0) + && relocation == 0 + && addend == 0) { - /* Tweak calls to undefined weak functions to behave as - if the "called" function immediately returns. We can - thus call to a weak function without first checking - whether the function is defined. */ - relocation = 4; - if (has_nop) - relocation = 8; + /* Tweak calls to undefined weak functions to point at a + blr. We can thus call a weak function without first + checking whether the function is defined. We have a + blr at the end of .sfpr. */ + BFD_ASSERT (htab->sfpr->_raw_size != 0); + relocation = (htab->sfpr->_raw_size - 4 + + htab->sfpr->output_offset + + htab->sfpr->output_section->vma); + from = (offset + + input_section->output_offset + + input_section->output_section->vma); + + /* But let's not be silly about it. If the blr isn't in + reach, just go to the next instruction. */ + if (relocation - from + (1 << 25) >= (1 << 26) + || htab->sfpr->_raw_size == 0) + relocation = from + 4; } break; } @@ -4593,6 +4837,7 @@ ppc64_elf_finish_dynamic_sections (output_bfd, info) #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE #define elf_backend_can_gc_sections 1 #define elf_backend_can_refcount 1 +#define elf_backend_rela_normal 1 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup #define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags |
