GNU Info
(bfd.info)howto manager
The howto manager
=================
When an application wants to create a relocation, but doesn't know
what the target machine might call it, it can find out by using this
bit of code.
`bfd_reloc_code_type'
.....................
*Description*
The insides of a reloc code. The idea is that, eventually, there will
be one enumerator for every type of relocation we ever do. Pass one of
these values to `bfd_reloc_type_lookup', and it'll return a howto
pointer.
This does mean that the application must determine the correct
enumerator value; you can't get a howto pointer from a random set of
attributes.
Here are the possible values for `enum bfd_reloc_code_real':
- : BFD_RELOC_64
- : BFD_RELOC_32
- : BFD_RELOC_26
- : BFD_RELOC_24
- : BFD_RELOC_16
- : BFD_RELOC_14
- : BFD_RELOC_8
Basic absolute relocations of N bits.
- : BFD_RELOC_64_PCREL
- : BFD_RELOC_32_PCREL
- : BFD_RELOC_24_PCREL
- : BFD_RELOC_16_PCREL
- : BFD_RELOC_12_PCREL
- : BFD_RELOC_8_PCREL
PC-relative relocations. Sometimes these are relative to the
address of the relocation itself; sometimes they are relative to
the start of the section containing the relocation. It depends on
the specific target.
The 24-bit relocation is used in some Intel 960 configurations.
- : BFD_RELOC_32_GOT_PCREL
- : BFD_RELOC_16_GOT_PCREL
- : BFD_RELOC_8_GOT_PCREL
- : BFD_RELOC_32_GOTOFF
- : BFD_RELOC_16_GOTOFF
- : BFD_RELOC_LO16_GOTOFF
- : BFD_RELOC_HI16_GOTOFF
- : BFD_RELOC_HI16_S_GOTOFF
- : BFD_RELOC_8_GOTOFF
- : BFD_RELOC_64_PLT_PCREL
- : BFD_RELOC_32_PLT_PCREL
- : BFD_RELOC_24_PLT_PCREL
- : BFD_RELOC_16_PLT_PCREL
- : BFD_RELOC_8_PLT_PCREL
- : BFD_RELOC_64_PLTOFF
- : BFD_RELOC_32_PLTOFF
- : BFD_RELOC_16_PLTOFF
- : BFD_RELOC_LO16_PLTOFF
- : BFD_RELOC_HI16_PLTOFF
- : BFD_RELOC_HI16_S_PLTOFF
- : BFD_RELOC_8_PLTOFF
For ELF.
- : BFD_RELOC_68K_GLOB_DAT
- : BFD_RELOC_68K_JMP_SLOT
- : BFD_RELOC_68K_RELATIVE
Relocations used by 68K ELF.
- : BFD_RELOC_32_BASEREL
- : BFD_RELOC_16_BASEREL
- : BFD_RELOC_LO16_BASEREL
- : BFD_RELOC_HI16_BASEREL
- : BFD_RELOC_HI16_S_BASEREL
- : BFD_RELOC_8_BASEREL
- : BFD_RELOC_RVA
Linkage-table relative.
- : BFD_RELOC_8_FFnn
Absolute 8-bit relocation, but used to form an address like 0xFFnn.
- : BFD_RELOC_32_PCREL_S2
- : BFD_RELOC_16_PCREL_S2
- : BFD_RELOC_23_PCREL_S2
These PC-relative relocations are stored as word displacements -
i.e., byte displacements shifted right two bits. The 30-bit word
displacement (<<32_PCREL_S2>> - 32 bits, shifted 2) is used on the
SPARC. (SPARC tools generally refer to this as <<WDISP30>>.) The
signed 16-bit displacement is used on the MIPS, and the 23-bit
displacement is used on the Alpha.
- : BFD_RELOC_HI22
- : BFD_RELOC_LO10
High 22 bits and low 10 bits of 32-bit value, placed into lower
bits of the target word. These are used on the SPARC.
- : BFD_RELOC_GPREL16
- : BFD_RELOC_GPREL32
For systems that allocate a Global Pointer register, these are
displacements off that register. These relocation types are
handled specially, because the value the register will have is
decided relatively late.
- : BFD_RELOC_I960_CALLJ
Reloc types used for i960/b.out.
- : BFD_RELOC_NONE
- : BFD_RELOC_SPARC_WDISP22
- : BFD_RELOC_SPARC22
- : BFD_RELOC_SPARC13
- : BFD_RELOC_SPARC_GOT10
- : BFD_RELOC_SPARC_GOT13
- : BFD_RELOC_SPARC_GOT22
- : BFD_RELOC_SPARC_PC10
- : BFD_RELOC_SPARC_PC22
- : BFD_RELOC_SPARC_WPLT30
- : BFD_RELOC_SPARC_COPY
- : BFD_RELOC_SPARC_GLOB_DAT
- : BFD_RELOC_SPARC_JMP_SLOT
- : BFD_RELOC_SPARC_RELATIVE
- : BFD_RELOC_SPARC_UA16
- : BFD_RELOC_SPARC_UA32
- : BFD_RELOC_SPARC_UA64
SPARC ELF relocations. There is probably some overlap with other
relocation types already defined.
- : BFD_RELOC_SPARC_BASE13
- : BFD_RELOC_SPARC_BASE22
I think these are specific to SPARC a.out (e.g., Sun 4).
- : BFD_RELOC_SPARC_64
- : BFD_RELOC_SPARC_10
- : BFD_RELOC_SPARC_11
- : BFD_RELOC_SPARC_OLO10
- : BFD_RELOC_SPARC_HH22
- : BFD_RELOC_SPARC_HM10
- : BFD_RELOC_SPARC_LM22
- : BFD_RELOC_SPARC_PC_HH22
- : BFD_RELOC_SPARC_PC_HM10
- : BFD_RELOC_SPARC_PC_LM22
- : BFD_RELOC_SPARC_WDISP16
- : BFD_RELOC_SPARC_WDISP19
- : BFD_RELOC_SPARC_7
- : BFD_RELOC_SPARC_6
- : BFD_RELOC_SPARC_5
- : BFD_RELOC_SPARC_DISP64
- : BFD_RELOC_SPARC_PLT32
- : BFD_RELOC_SPARC_PLT64
- : BFD_RELOC_SPARC_HIX22
- : BFD_RELOC_SPARC_LOX10
- : BFD_RELOC_SPARC_H44
- : BFD_RELOC_SPARC_M44
- : BFD_RELOC_SPARC_L44
- : BFD_RELOC_SPARC_REGISTER
SPARC64 relocations
- : BFD_RELOC_SPARC_REV32
SPARC little endian relocation
- : BFD_RELOC_ALPHA_GPDISP_HI16
Alpha ECOFF and ELF relocations. Some of these treat the symbol or
"addend" in some special way. For GPDISP_HI16 ("gpdisp")
relocations, the symbol is ignored when writing; when reading, it
will be the absolute section symbol. The addend is the
displacement in bytes of the "lda" instruction from the "ldah"
instruction (which is at the address of this reloc).
- : BFD_RELOC_ALPHA_GPDISP_LO16
For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
with GPDISP_HI16 relocs. The addend is ignored when writing the
relocations out, and is filled in with the file's GP value on
reading, for convenience.
- : BFD_RELOC_ALPHA_GPDISP
The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
relocation except that there is no accompanying GPDISP_LO16
relocation.
- : BFD_RELOC_ALPHA_LITERAL
- : BFD_RELOC_ALPHA_ELF_LITERAL
- : BFD_RELOC_ALPHA_LITUSE
The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
the assembler turns it into a LDQ instruction to load the address
of the symbol, and then fills in a register in the real
instruction.
The LITERAL reloc, at the LDQ instruction, refers to the .lita
section symbol. The addend is ignored when writing, but is filled
in with the file's GP value on reading, for convenience, as with
the GPDISP_LO16 reloc.
The ELF_LITERAL reloc is somewhere between 16_GOTOFF and
GPDISP_LO16. It should refer to the symbol to be referenced, as
with 16_GOTOFF, but it generates output not based on the position
within the .got section, but relative to the GP value chosen for
the file during the final link stage.
The LITUSE reloc, on the instruction using the loaded address,
gives information to the linker that it might be able to use to
optimize away some literal section references. The symbol is
ignored (read as the absolute section symbol), and the "addend"
indicates the type of instruction using the register: 1 - "memory"
fmt insn 2 - byte-manipulation (byte offset reg) 3 - jsr (target
of branch)
- : BFD_RELOC_ALPHA_HINT
The HINT relocation indicates a value that should be filled into
the "hint" field of a jmp/jsr/ret instruction, for possible branch-
prediction logic which may be provided on some processors.
- : BFD_RELOC_ALPHA_LINKAGE
The LINKAGE relocation outputs a linkage pair in the object file,
which is filled by the linker.
- : BFD_RELOC_ALPHA_CODEADDR
The CODEADDR relocation outputs a STO_CA in the object file, which
is filled by the linker.
- : BFD_RELOC_ALPHA_GPREL_HI16
- : BFD_RELOC_ALPHA_GPREL_LO16
The GPREL_HI/LO relocations together form a 32-bit offset from the
GP register.
- : BFD_RELOC_ALPHA_BRSGP
Like BFD_RELOC_23_PCREL_S2, except that the source and target must
share a common GP, and the target address is adjusted for
STO_ALPHA_STD_GPLOAD.
- : BFD_RELOC_MIPS_JMP
Bits 27..2 of the relocation address shifted right 2 bits; simple
reloc otherwise.
- : BFD_RELOC_MIPS16_JMP
The MIPS16 jump instruction.
- : BFD_RELOC_MIPS16_GPREL
MIPS16 GP relative reloc.
- : BFD_RELOC_HI16
High 16 bits of 32-bit value; simple reloc.
- : BFD_RELOC_HI16_S
High 16 bits of 32-bit value but the low 16 bits will be sign
extended and added to form the final result. If the low 16 bits
form a negative number, we need to add one to the high value to
compensate for the borrow when the low bits are added.
- : BFD_RELOC_LO16
Low 16 bits.
- : BFD_RELOC_PCREL_HI16_S
Like BFD_RELOC_HI16_S, but PC relative.
- : BFD_RELOC_PCREL_LO16
Like BFD_RELOC_LO16, but PC relative.
- : BFD_RELOC_MIPS_LITERAL
Relocation against a MIPS literal section.
- : BFD_RELOC_MIPS_GOT16
- : BFD_RELOC_MIPS_CALL16
- : BFD_RELOC_MIPS_GOT_HI16
- : BFD_RELOC_MIPS_GOT_LO16
- : BFD_RELOC_MIPS_CALL_HI16
- : BFD_RELOC_MIPS_CALL_LO16
- : BFD_RELOC_MIPS_SUB
- : BFD_RELOC_MIPS_GOT_PAGE
- : BFD_RELOC_MIPS_GOT_OFST
- : BFD_RELOC_MIPS_GOT_DISP
- : BFD_RELOC_MIPS_SHIFT5
- : BFD_RELOC_MIPS_SHIFT6
- : BFD_RELOC_MIPS_INSERT_A
- : BFD_RELOC_MIPS_INSERT_B
- : BFD_RELOC_MIPS_DELETE
- : BFD_RELOC_MIPS_HIGHEST
- : BFD_RELOC_MIPS_HIGHER
- : BFD_RELOC_MIPS_SCN_DISP
- : BFD_RELOC_MIPS_REL16
- : BFD_RELOC_MIPS_RELGOT
- : BFD_RELOC_MIPS_JALR
- : BFD_RELOC_SH_GOT_LOW16
- : BFD_RELOC_SH_GOT_MEDLOW16
- : BFD_RELOC_SH_GOT_MEDHI16
- : BFD_RELOC_SH_GOT_HI16
- : BFD_RELOC_SH_GOTPLT_LOW16
- : BFD_RELOC_SH_GOTPLT_MEDLOW16
- : BFD_RELOC_SH_GOTPLT_MEDHI16
- : BFD_RELOC_SH_GOTPLT_HI16
- : BFD_RELOC_SH_PLT_LOW16
- : BFD_RELOC_SH_PLT_MEDLOW16
- : BFD_RELOC_SH_PLT_MEDHI16
- : BFD_RELOC_SH_PLT_HI16
- : BFD_RELOC_SH_GOTOFF_LOW16
- : BFD_RELOC_SH_GOTOFF_MEDLOW16
- : BFD_RELOC_SH_GOTOFF_MEDHI16
- : BFD_RELOC_SH_GOTOFF_HI16
- : BFD_RELOC_SH_GOTPC_LOW16
- : BFD_RELOC_SH_GOTPC_MEDLOW16
- : BFD_RELOC_SH_GOTPC_MEDHI16
- : BFD_RELOC_SH_GOTPC_HI16
- : BFD_RELOC_SH_COPY64
- : BFD_RELOC_SH_GLOB_DAT64
- : BFD_RELOC_SH_JMP_SLOT64
- : BFD_RELOC_SH_RELATIVE64
- : BFD_RELOC_SH_GOT10BY4
- : BFD_RELOC_SH_GOT10BY8
- : BFD_RELOC_SH_GOTPLT10BY4
- : BFD_RELOC_SH_GOTPLT10BY8
- : BFD_RELOC_SH_GOTPLT32
- : BFD_RELOC_SH_SHMEDIA_CODE
- : BFD_RELOC_SH_IMMU5
- : BFD_RELOC_SH_IMMS6
- : BFD_RELOC_SH_IMMS6BY32
- : BFD_RELOC_SH_IMMU6
- : BFD_RELOC_SH_IMMS10
- : BFD_RELOC_SH_IMMS10BY2
- : BFD_RELOC_SH_IMMS10BY4
- : BFD_RELOC_SH_IMMS10BY8
- : BFD_RELOC_SH_IMMS16
- : BFD_RELOC_SH_IMMU16
- : BFD_RELOC_SH_IMM_LOW16
- : BFD_RELOC_SH_IMM_LOW16_PCREL
- : BFD_RELOC_SH_IMM_MEDLOW16
- : BFD_RELOC_SH_IMM_MEDLOW16_PCREL
- : BFD_RELOC_SH_IMM_MEDHI16
- : BFD_RELOC_SH_IMM_MEDHI16_PCREL
- : BFD_RELOC_SH_IMM_HI16
- : BFD_RELOC_SH_IMM_HI16_PCREL
- : BFD_RELOC_SH_PT_16
MIPS ELF relocations.
- : BFD_RELOC_386_GOT32
- : BFD_RELOC_386_PLT32
- : BFD_RELOC_386_COPY
- : BFD_RELOC_386_GLOB_DAT
- : BFD_RELOC_386_JUMP_SLOT
- : BFD_RELOC_386_RELATIVE
- : BFD_RELOC_386_GOTOFF
- : BFD_RELOC_386_GOTPC
i386/elf relocations
- : BFD_RELOC_X86_64_GOT32
- : BFD_RELOC_X86_64_PLT32
- : BFD_RELOC_X86_64_COPY
- : BFD_RELOC_X86_64_GLOB_DAT
- : BFD_RELOC_X86_64_JUMP_SLOT
- : BFD_RELOC_X86_64_RELATIVE
- : BFD_RELOC_X86_64_GOTPCREL
- : BFD_RELOC_X86_64_32S
x86-64/elf relocations
- : BFD_RELOC_NS32K_IMM_8
- : BFD_RELOC_NS32K_IMM_16
- : BFD_RELOC_NS32K_IMM_32
- : BFD_RELOC_NS32K_IMM_8_PCREL
- : BFD_RELOC_NS32K_IMM_16_PCREL
- : BFD_RELOC_NS32K_IMM_32_PCREL
- : BFD_RELOC_NS32K_DISP_8
- : BFD_RELOC_NS32K_DISP_16
- : BFD_RELOC_NS32K_DISP_32
- : BFD_RELOC_NS32K_DISP_8_PCREL
- : BFD_RELOC_NS32K_DISP_16_PCREL
- : BFD_RELOC_NS32K_DISP_32_PCREL
ns32k relocations
- : BFD_RELOC_PDP11_DISP_8_PCREL
- : BFD_RELOC_PDP11_DISP_6_PCREL
PDP11 relocations
- : BFD_RELOC_PJ_CODE_HI16
- : BFD_RELOC_PJ_CODE_LO16
- : BFD_RELOC_PJ_CODE_DIR16
- : BFD_RELOC_PJ_CODE_DIR32
- : BFD_RELOC_PJ_CODE_REL16
- : BFD_RELOC_PJ_CODE_REL32
Picojava relocs. Not all of these appear in object files.
- : BFD_RELOC_PPC_B26
- : BFD_RELOC_PPC_BA26
- : BFD_RELOC_PPC_TOC16
- : BFD_RELOC_PPC_B16
- : BFD_RELOC_PPC_B16_BRTAKEN
- : BFD_RELOC_PPC_B16_BRNTAKEN
- : BFD_RELOC_PPC_BA16
- : BFD_RELOC_PPC_BA16_BRTAKEN
- : BFD_RELOC_PPC_BA16_BRNTAKEN
- : BFD_RELOC_PPC_COPY
- : BFD_RELOC_PPC_GLOB_DAT
- : BFD_RELOC_PPC_JMP_SLOT
- : BFD_RELOC_PPC_RELATIVE
- : BFD_RELOC_PPC_LOCAL24PC
- : BFD_RELOC_PPC_EMB_NADDR32
- : BFD_RELOC_PPC_EMB_NADDR16
- : BFD_RELOC_PPC_EMB_NADDR16_LO
- : BFD_RELOC_PPC_EMB_NADDR16_HI
- : BFD_RELOC_PPC_EMB_NADDR16_HA
- : BFD_RELOC_PPC_EMB_SDAI16
- : BFD_RELOC_PPC_EMB_SDA2I16
- : BFD_RELOC_PPC_EMB_SDA2REL
- : BFD_RELOC_PPC_EMB_SDA21
- : BFD_RELOC_PPC_EMB_MRKREF
- : BFD_RELOC_PPC_EMB_RELSEC16
- : BFD_RELOC_PPC_EMB_RELST_LO
- : BFD_RELOC_PPC_EMB_RELST_HI
- : BFD_RELOC_PPC_EMB_RELST_HA
- : BFD_RELOC_PPC_EMB_BIT_FLD
- : BFD_RELOC_PPC_EMB_RELSDA
- : BFD_RELOC_PPC64_HIGHER
- : BFD_RELOC_PPC64_HIGHER_S
- : BFD_RELOC_PPC64_HIGHEST
- : BFD_RELOC_PPC64_HIGHEST_S
- : BFD_RELOC_PPC64_TOC16_LO
- : BFD_RELOC_PPC64_TOC16_HI
- : BFD_RELOC_PPC64_TOC16_HA
- : BFD_RELOC_PPC64_TOC
- : BFD_RELOC_PPC64_PLTGOT16
- : BFD_RELOC_PPC64_PLTGOT16_LO
- : BFD_RELOC_PPC64_PLTGOT16_HI
- : BFD_RELOC_PPC64_PLTGOT16_HA
- : BFD_RELOC_PPC64_ADDR16_DS
- : BFD_RELOC_PPC64_ADDR16_LO_DS
- : BFD_RELOC_PPC64_GOT16_DS
- : BFD_RELOC_PPC64_GOT16_LO_DS
- : BFD_RELOC_PPC64_PLT16_LO_DS
- : BFD_RELOC_PPC64_SECTOFF_DS
- : BFD_RELOC_PPC64_SECTOFF_LO_DS
- : BFD_RELOC_PPC64_TOC16_DS
- : BFD_RELOC_PPC64_TOC16_LO_DS
- : BFD_RELOC_PPC64_PLTGOT16_DS
- : BFD_RELOC_PPC64_PLTGOT16_LO_DS
Power(rs6000) and PowerPC relocations.
- : BFD_RELOC_I370_D12
IBM 370/390 relocations
- : BFD_RELOC_CTOR
The type of reloc used to build a contructor table - at the moment
probably a 32 bit wide absolute relocation, but the target can
choose. It generally does map to one of the other relocation
types.
- : BFD_RELOC_ARM_PCREL_BRANCH
ARM 26 bit pc-relative branch. The lowest two bits must be zero
and are not stored in the instruction.
- : BFD_RELOC_ARM_PCREL_BLX
ARM 26 bit pc-relative branch. The lowest bit must be zero and is
not stored in the instruction. The 2nd lowest bit comes from a 1
bit field in the instruction.
- : BFD_RELOC_THUMB_PCREL_BLX
Thumb 22 bit pc-relative branch. The lowest bit must be zero and
is not stored in the instruction. The 2nd lowest bit comes from a
1 bit field in the instruction.
- : BFD_RELOC_ARM_IMMEDIATE
- : BFD_RELOC_ARM_ADRL_IMMEDIATE
- : BFD_RELOC_ARM_OFFSET_IMM
- : BFD_RELOC_ARM_SHIFT_IMM
- : BFD_RELOC_ARM_SWI
- : BFD_RELOC_ARM_MULTI
- : BFD_RELOC_ARM_CP_OFF_IMM
- : BFD_RELOC_ARM_ADR_IMM
- : BFD_RELOC_ARM_LDR_IMM
- : BFD_RELOC_ARM_LITERAL
- : BFD_RELOC_ARM_IN_POOL
- : BFD_RELOC_ARM_OFFSET_IMM8
- : BFD_RELOC_ARM_HWLITERAL
- : BFD_RELOC_ARM_THUMB_ADD
- : BFD_RELOC_ARM_THUMB_IMM
- : BFD_RELOC_ARM_THUMB_SHIFT
- : BFD_RELOC_ARM_THUMB_OFFSET
- : BFD_RELOC_ARM_GOT12
- : BFD_RELOC_ARM_GOT32
- : BFD_RELOC_ARM_JUMP_SLOT
- : BFD_RELOC_ARM_COPY
- : BFD_RELOC_ARM_GLOB_DAT
- : BFD_RELOC_ARM_PLT32
- : BFD_RELOC_ARM_RELATIVE
- : BFD_RELOC_ARM_GOTOFF
- : BFD_RELOC_ARM_GOTPC
These relocs are only used within the ARM assembler. They are not
(at present) written to any object files.
- : BFD_RELOC_SH_PCDISP8BY2
- : BFD_RELOC_SH_PCDISP12BY2
- : BFD_RELOC_SH_IMM4
- : BFD_RELOC_SH_IMM4BY2
- : BFD_RELOC_SH_IMM4BY4
- : BFD_RELOC_SH_IMM8
- : BFD_RELOC_SH_IMM8BY2
- : BFD_RELOC_SH_IMM8BY4
- : BFD_RELOC_SH_PCRELIMM8BY2
- : BFD_RELOC_SH_PCRELIMM8BY4
- : BFD_RELOC_SH_SWITCH16
- : BFD_RELOC_SH_SWITCH32
- : BFD_RELOC_SH_USES
- : BFD_RELOC_SH_COUNT
- : BFD_RELOC_SH_ALIGN
- : BFD_RELOC_SH_CODE
- : BFD_RELOC_SH_DATA
- : BFD_RELOC_SH_LABEL
- : BFD_RELOC_SH_LOOP_START
- : BFD_RELOC_SH_LOOP_END
- : BFD_RELOC_SH_COPY
- : BFD_RELOC_SH_GLOB_DAT
- : BFD_RELOC_SH_JMP_SLOT
- : BFD_RELOC_SH_RELATIVE
- : BFD_RELOC_SH_GOTPC
Hitachi SH relocs. Not all of these appear in object files.
- : BFD_RELOC_THUMB_PCREL_BRANCH9
- : BFD_RELOC_THUMB_PCREL_BRANCH12
- : BFD_RELOC_THUMB_PCREL_BRANCH23
Thumb 23-, 12- and 9-bit pc-relative branches. The lowest bit must
be zero and is not stored in the instruction.
- : BFD_RELOC_ARC_B22_PCREL
ARC Cores relocs. ARC 22 bit pc-relative branch. The lowest two
bits must be zero and are not stored in the instruction. The high
20 bits are installed in bits 26 through 7 of the instruction.
- : BFD_RELOC_ARC_B26
ARC 26 bit absolute branch. The lowest two bits must be zero and
are not stored in the instruction. The high 24 bits are installed
in bits 23 through 0.
- : BFD_RELOC_D10V_10_PCREL_R
Mitsubishi D10V relocs. This is a 10-bit reloc with the right 2
bits assumed to be 0.
- : BFD_RELOC_D10V_10_PCREL_L
Mitsubishi D10V relocs. This is a 10-bit reloc with the right 2
bits assumed to be 0. This is the same as the previous reloc
except it is in the left container, i.e., shifted left 15 bits.
- : BFD_RELOC_D10V_18
This is an 18-bit reloc with the right 2 bits assumed to be 0.
- : BFD_RELOC_D10V_18_PCREL
This is an 18-bit reloc with the right 2 bits assumed to be 0.
- : BFD_RELOC_D30V_6
Mitsubishi D30V relocs. This is a 6-bit absolute reloc.
- : BFD_RELOC_D30V_9_PCREL
This is a 6-bit pc-relative reloc with the right 3 bits assumed to
be 0.
- : BFD_RELOC_D30V_9_PCREL_R
This is a 6-bit pc-relative reloc with the right 3 bits assumed to
be 0. Same as the previous reloc but on the right side of the
container.
- : BFD_RELOC_D30V_15
This is a 12-bit absolute reloc with the right 3 bitsassumed to be
0.
- : BFD_RELOC_D30V_15_PCREL
This is a 12-bit pc-relative reloc with the right 3 bits assumed
to be 0.
- : BFD_RELOC_D30V_15_PCREL_R
This is a 12-bit pc-relative reloc with the right 3 bits assumed
to be 0. Same as the previous reloc but on the right side of the
container.
- : BFD_RELOC_D30V_21
This is an 18-bit absolute reloc with the right 3 bits assumed to
be 0.
- : BFD_RELOC_D30V_21_PCREL
This is an 18-bit pc-relative reloc with the right 3 bits assumed
to be 0.
- : BFD_RELOC_D30V_21_PCREL_R
This is an 18-bit pc-relative reloc with the right 3 bits assumed
to be 0. Same as the previous reloc but on the right side of the
container.
- : BFD_RELOC_D30V_32
This is a 32-bit absolute reloc.
- : BFD_RELOC_D30V_32_PCREL
This is a 32-bit pc-relative reloc.
- : BFD_RELOC_M32R_24
Mitsubishi M32R relocs. This is a 24 bit absolute address.
- : BFD_RELOC_M32R_10_PCREL
This is a 10-bit pc-relative reloc with the right 2 bits assumed
to be 0.
- : BFD_RELOC_M32R_18_PCREL
This is an 18-bit reloc with the right 2 bits assumed to be 0.
- : BFD_RELOC_M32R_26_PCREL
This is a 26-bit reloc with the right 2 bits assumed to be 0.
- : BFD_RELOC_M32R_HI16_ULO
This is a 16-bit reloc containing the high 16 bits of an address
used when the lower 16 bits are treated as unsigned.
- : BFD_RELOC_M32R_HI16_SLO
This is a 16-bit reloc containing the high 16 bits of an address
used when the lower 16 bits are treated as signed.
- : BFD_RELOC_M32R_LO16
This is a 16-bit reloc containing the lower 16 bits of an address.
- : BFD_RELOC_M32R_SDA16
This is a 16-bit reloc containing the small data area offset for
use in add3, load, and store instructions.
- : BFD_RELOC_V850_9_PCREL
This is a 9-bit reloc
- : BFD_RELOC_V850_22_PCREL
This is a 22-bit reloc
- : BFD_RELOC_V850_SDA_16_16_OFFSET
This is a 16 bit offset from the short data area pointer.
- : BFD_RELOC_V850_SDA_15_16_OFFSET
This is a 16 bit offset (of which only 15 bits are used) from the
short data area pointer.
- : BFD_RELOC_V850_ZDA_16_16_OFFSET
This is a 16 bit offset from the zero data area pointer.
- : BFD_RELOC_V850_ZDA_15_16_OFFSET
This is a 16 bit offset (of which only 15 bits are used) from the
zero data area pointer.
- : BFD_RELOC_V850_TDA_6_8_OFFSET
This is an 8 bit offset (of which only 6 bits are used) from the
tiny data area pointer.
- : BFD_RELOC_V850_TDA_7_8_OFFSET
This is an 8bit offset (of which only 7 bits are used) from the
tiny data area pointer.
- : BFD_RELOC_V850_TDA_7_7_OFFSET
This is a 7 bit offset from the tiny data area pointer.
- : BFD_RELOC_V850_TDA_16_16_OFFSET
This is a 16 bit offset from the tiny data area pointer.
- : BFD_RELOC_V850_TDA_4_5_OFFSET
This is a 5 bit offset (of which only 4 bits are used) from the
tiny data area pointer.
- : BFD_RELOC_V850_TDA_4_4_OFFSET
This is a 4 bit offset from the tiny data area pointer.
- : BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
This is a 16 bit offset from the short data area pointer, with the
bits placed non-contigously in the instruction.
- : BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
This is a 16 bit offset from the zero data area pointer, with the
bits placed non-contigously in the instruction.
- : BFD_RELOC_V850_CALLT_6_7_OFFSET
This is a 6 bit offset from the call table base pointer.
- : BFD_RELOC_V850_CALLT_16_16_OFFSET
This is a 16 bit offset from the call table base pointer.
- : BFD_RELOC_MN10300_32_PCREL
This is a 32bit pcrel reloc for the mn10300, offset by two bytes
in the instruction.
- : BFD_RELOC_MN10300_16_PCREL
This is a 16bit pcrel reloc for the mn10300, offset by two bytes
in the instruction.
- : BFD_RELOC_TIC30_LDP
This is a 8bit DP reloc for the tms320c30, where the most
significant 8 bits of a 24 bit word are placed into the least
significant 8 bits of the opcode.
- : BFD_RELOC_TIC54X_PARTLS7
This is a 7bit reloc for the tms320c54x, where the least
significant 7 bits of a 16 bit word are placed into the least
significant 7 bits of the opcode.
- : BFD_RELOC_TIC54X_PARTMS9
This is a 9bit DP reloc for the tms320c54x, where the most
significant 9 bits of a 16 bit word are placed into the least
significant 9 bits of the opcode.
- : BFD_RELOC_TIC54X_23
This is an extended address 23-bit reloc for the tms320c54x.
- : BFD_RELOC_TIC54X_16_OF_23
This is a 16-bit reloc for the tms320c54x, where the least
significant 16 bits of a 23-bit extended address are placed into
the opcode.
- : BFD_RELOC_TIC54X_MS7_OF_23
This is a reloc for the tms320c54x, where the most significant 7
bits of a 23-bit extended address are placed into the opcode.
- : BFD_RELOC_FR30_48
This is a 48 bit reloc for the FR30 that stores 32 bits.
- : BFD_RELOC_FR30_20
This is a 32 bit reloc for the FR30 that stores 20 bits split up
into two sections.
- : BFD_RELOC_FR30_6_IN_4
This is a 16 bit reloc for the FR30 that stores a 6 bit word
offset in 4 bits.
- : BFD_RELOC_FR30_8_IN_8
This is a 16 bit reloc for the FR30 that stores an 8 bit byte
offset into 8 bits.
- : BFD_RELOC_FR30_9_IN_8
This is a 16 bit reloc for the FR30 that stores a 9 bit short
offset into 8 bits.
- : BFD_RELOC_FR30_10_IN_8
This is a 16 bit reloc for the FR30 that stores a 10 bit word
offset into 8 bits.
- : BFD_RELOC_FR30_9_PCREL
This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
short offset into 8 bits.
- : BFD_RELOC_FR30_12_PCREL
This is a 16 bit reloc for the FR30 that stores a 12 bit pc
relative short offset into 11 bits.
- : BFD_RELOC_MCORE_PCREL_IMM8BY4
- : BFD_RELOC_MCORE_PCREL_IMM11BY2
- : BFD_RELOC_MCORE_PCREL_IMM4BY2
- : BFD_RELOC_MCORE_PCREL_32
- : BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
- : BFD_RELOC_MCORE_RVA
Motorola Mcore relocations.
- : BFD_RELOC_MMIX_GETA
- : BFD_RELOC_MMIX_GETA_1
- : BFD_RELOC_MMIX_GETA_2
- : BFD_RELOC_MMIX_GETA_3
These are relocations for the GETA instruction.
- : BFD_RELOC_MMIX_CBRANCH
- : BFD_RELOC_MMIX_CBRANCH_J
- : BFD_RELOC_MMIX_CBRANCH_1
- : BFD_RELOC_MMIX_CBRANCH_2
- : BFD_RELOC_MMIX_CBRANCH_3
These are relocations for a conditional branch instruction.
- : BFD_RELOC_MMIX_PUSHJ
- : BFD_RELOC_MMIX_PUSHJ_1
- : BFD_RELOC_MMIX_PUSHJ_2
- : BFD_RELOC_MMIX_PUSHJ_3
These are relocations for the PUSHJ instruction.
- : BFD_RELOC_MMIX_JMP
- : BFD_RELOC_MMIX_JMP_1
- : BFD_RELOC_MMIX_JMP_2
- : BFD_RELOC_MMIX_JMP_3
These are relocations for the JMP instruction.
- : BFD_RELOC_MMIX_ADDR19
This is a relocation for a relative address as in a GETA
instruction or a branch.
- : BFD_RELOC_MMIX_ADDR27
This is a relocation for a relative address as in a JMP
instruction.
- : BFD_RELOC_MMIX_REG_OR_BYTE
This is a relocation for an instruction field that may be a general
register or a value 0..255.
- : BFD_RELOC_MMIX_REG
This is a relocation for an instruction field that may be a general
register.
- : BFD_RELOC_MMIX_BASE_PLUS_OFFSET
This is a relocation for two instruction fields holding a register
and an offset, the equivalent of the relocation.
- : BFD_RELOC_MMIX_LOCAL
This relocation is an assertion that the expression is not
allocated as a global register. It does not modify contents.
- : BFD_RELOC_AVR_7_PCREL
This is a 16 bit reloc for the AVR that stores 8 bit pc relative
short offset into 7 bits.
- : BFD_RELOC_AVR_13_PCREL
This is a 16 bit reloc for the AVR that stores 13 bit pc relative
short offset into 12 bits.
- : BFD_RELOC_AVR_16_PM
This is a 16 bit reloc for the AVR that stores 17 bit value
(usually program memory address) into 16 bits.
- : BFD_RELOC_AVR_LO8_LDI
This is a 16 bit reloc for the AVR that stores 8 bit value (usually
data memory address) into 8 bit immediate value of LDI insn.
- : BFD_RELOC_AVR_HI8_LDI
This is a 16 bit reloc for the AVR that stores 8 bit value (high 8
bit of data memory address) into 8 bit immediate value of LDI insn.
- : BFD_RELOC_AVR_HH8_LDI
This is a 16 bit reloc for the AVR that stores 8 bit value (most
high 8 bit of program memory address) into 8 bit immediate value
of LDI insn.
- : BFD_RELOC_AVR_LO8_LDI_NEG
This is a 16 bit reloc for the AVR that stores negated 8 bit value
(usually data memory address) into 8 bit immediate value of SUBI
insn.
- : BFD_RELOC_AVR_HI8_LDI_NEG
This is a 16 bit reloc for the AVR that stores negated 8 bit value
(high 8 bit of data memory address) into 8 bit immediate value of
SUBI insn.
- : BFD_RELOC_AVR_HH8_LDI_NEG
This is a 16 bit reloc for the AVR that stores negated 8 bit value
(most high 8 bit of program memory address) into 8 bit immediate
value of LDI or SUBI insn.
- : BFD_RELOC_AVR_LO8_LDI_PM
This is a 16 bit reloc for the AVR that stores 8 bit value (usually
command address) into 8 bit immediate value of LDI insn.
- : BFD_RELOC_AVR_HI8_LDI_PM
This is a 16 bit reloc for the AVR that stores 8 bit value (high 8
bit of command address) into 8 bit immediate value of LDI insn.
- : BFD_RELOC_AVR_HH8_LDI_PM
This is a 16 bit reloc for the AVR that stores 8 bit value (most
high 8 bit of command address) into 8 bit immediate value of LDI
insn.
- : BFD_RELOC_AVR_LO8_LDI_PM_NEG
This is a 16 bit reloc for the AVR that stores negated 8 bit value
(usually command address) into 8 bit immediate value of SUBI insn.
- : BFD_RELOC_AVR_HI8_LDI_PM_NEG
This is a 16 bit reloc for the AVR that stores negated 8 bit value
(high 8 bit of 16 bit command address) into 8 bit immediate value
of SUBI insn.
- : BFD_RELOC_AVR_HH8_LDI_PM_NEG
This is a 16 bit reloc for the AVR that stores negated 8 bit value
(high 6 bit of 22 bit command address) into 8 bit immediate value
of SUBI insn.
- : BFD_RELOC_AVR_CALL
This is a 32 bit reloc for the AVR that stores 23 bit value into
22 bits.
- : BFD_RELOC_390_12
Direct 12 bit.
- : BFD_RELOC_390_GOT12
12 bit GOT offset.
- : BFD_RELOC_390_PLT32
32 bit PC relative PLT address.
- : BFD_RELOC_390_COPY
Copy symbol at runtime.
- : BFD_RELOC_390_GLOB_DAT
Create GOT entry.
- : BFD_RELOC_390_JMP_SLOT
Create PLT entry.
- : BFD_RELOC_390_RELATIVE
Adjust by program base.
- : BFD_RELOC_390_GOTPC
32 bit PC relative offset to GOT.
- : BFD_RELOC_390_GOT16
16 bit GOT offset.
- : BFD_RELOC_390_PC16DBL
PC relative 16 bit shifted by 1.
- : BFD_RELOC_390_PLT16DBL
16 bit PC rel. PLT shifted by 1.
- : BFD_RELOC_390_PC32DBL
PC relative 32 bit shifted by 1.
- : BFD_RELOC_390_PLT32DBL
32 bit PC rel. PLT shifted by 1.
- : BFD_RELOC_390_GOTPCDBL
32 bit PC rel. GOT shifted by 1.
- : BFD_RELOC_390_GOT64
64 bit GOT offset.
- : BFD_RELOC_390_PLT64
64 bit PC relative PLT address.
- : BFD_RELOC_390_GOTENT
32 bit rel. offset to GOT entry.
- : BFD_RELOC_VTABLE_INHERIT
- : BFD_RELOC_VTABLE_ENTRY
These two relocations are used by the linker to determine which of
the entries in a C++ virtual function table are actually used.
When the -gc-sections option is given, the linker will zero out
the entries that are not used, so that the code for those
functions need not be included in the output.
VTABLE_INHERIT is a zero-space relocation used to describe to the
linker the inheritence tree of a C++ virtual function table. The
relocation's symbol should be the parent class' vtable, and the
relocation should be located at the child vtable.
VTABLE_ENTRY is a zero-space relocation that describes the use of a
virtual function table entry. The reloc's symbol should refer to
the table of the class mentioned in the code. Off of that base,
an offset describes the entry that is being used. For Rela hosts,
this offset is stored in the reloc's addend. For Rel hosts, we
are forced to put this offset in the reloc's section offset.
- : BFD_RELOC_IA64_IMM14
- : BFD_RELOC_IA64_IMM22
- : BFD_RELOC_IA64_IMM64
- : BFD_RELOC_IA64_DIR32MSB
- : BFD_RELOC_IA64_DIR32LSB
- : BFD_RELOC_IA64_DIR64MSB
- : BFD_RELOC_IA64_DIR64LSB
- : BFD_RELOC_IA64_GPREL22
- : BFD_RELOC_IA64_GPREL64I
- : BFD_RELOC_IA64_GPREL32MSB
- : BFD_RELOC_IA64_GPREL32LSB
- : BFD_RELOC_IA64_GPREL64MSB
- : BFD_RELOC_IA64_GPREL64LSB
- : BFD_RELOC_IA64_LTOFF22
- : BFD_RELOC_IA64_LTOFF64I
- : BFD_RELOC_IA64_PLTOFF22
- : BFD_RELOC_IA64_PLTOFF64I
- : BFD_RELOC_IA64_PLTOFF64MSB
- : BFD_RELOC_IA64_PLTOFF64LSB
- : BFD_RELOC_IA64_FPTR64I
- : BFD_RELOC_IA64_FPTR32MSB
- : BFD_RELOC_IA64_FPTR32LSB
- : BFD_RELOC_IA64_FPTR64MSB
- : BFD_RELOC_IA64_FPTR64LSB
- : BFD_RELOC_IA64_PCREL21B
- : BFD_RELOC_IA64_PCREL21BI
- : BFD_RELOC_IA64_PCREL21M
- : BFD_RELOC_IA64_PCREL21F
- : BFD_RELOC_IA64_PCREL22
- : BFD_RELOC_IA64_PCREL60B
- : BFD_RELOC_IA64_PCREL64I
- : BFD_RELOC_IA64_PCREL32MSB
- : BFD_RELOC_IA64_PCREL32LSB
- : BFD_RELOC_IA64_PCREL64MSB
- : BFD_RELOC_IA64_PCREL64LSB
- : BFD_RELOC_IA64_LTOFF_FPTR22
- : BFD_RELOC_IA64_LTOFF_FPTR64I
- : BFD_RELOC_IA64_LTOFF_FPTR32MSB
- : BFD_RELOC_IA64_LTOFF_FPTR32LSB
- : BFD_RELOC_IA64_LTOFF_FPTR64MSB
- : BFD_RELOC_IA64_LTOFF_FPTR64LSB
- : BFD_RELOC_IA64_SEGREL32MSB
- : BFD_RELOC_IA64_SEGREL32LSB
- : BFD_RELOC_IA64_SEGREL64MSB
- : BFD_RELOC_IA64_SEGREL64LSB
- : BFD_RELOC_IA64_SECREL32MSB
- : BFD_RELOC_IA64_SECREL32LSB
- : BFD_RELOC_IA64_SECREL64MSB
- : BFD_RELOC_IA64_SECREL64LSB
- : BFD_RELOC_IA64_REL32MSB
- : BFD_RELOC_IA64_REL32LSB
- : BFD_RELOC_IA64_REL64MSB
- : BFD_RELOC_IA64_REL64LSB
- : BFD_RELOC_IA64_LTV32MSB
- : BFD_RELOC_IA64_LTV32LSB
- : BFD_RELOC_IA64_LTV64MSB
- : BFD_RELOC_IA64_LTV64LSB
- : BFD_RELOC_IA64_IPLTMSB
- : BFD_RELOC_IA64_IPLTLSB
- : BFD_RELOC_IA64_COPY
- : BFD_RELOC_IA64_TPREL22
- : BFD_RELOC_IA64_TPREL64MSB
- : BFD_RELOC_IA64_TPREL64LSB
- : BFD_RELOC_IA64_LTOFF_TP22
- : BFD_RELOC_IA64_LTOFF22X
- : BFD_RELOC_IA64_LDXMOV
Intel IA64 Relocations.
- : BFD_RELOC_M68HC11_HI8
Motorola 68HC11 reloc. This is the 8 bits high part of an
absolute address.
- : BFD_RELOC_M68HC11_LO8
Motorola 68HC11 reloc. This is the 8 bits low part of an absolute
address.
- : BFD_RELOC_M68HC11_3B
Motorola 68HC11 reloc. This is the 3 bits of a value.
- : BFD_RELOC_CRIS_BDISP8
- : BFD_RELOC_CRIS_UNSIGNED_5
- : BFD_RELOC_CRIS_SIGNED_6
- : BFD_RELOC_CRIS_UNSIGNED_6
- : BFD_RELOC_CRIS_UNSIGNED_4
These relocs are only used within the CRIS assembler. They are not
(at present) written to any object files.
- : BFD_RELOC_CRIS_COPY
- : BFD_RELOC_CRIS_GLOB_DAT
- : BFD_RELOC_CRIS_JUMP_SLOT
- : BFD_RELOC_CRIS_RELATIVE
Relocs used in ELF shared libraries for CRIS.
- : BFD_RELOC_CRIS_32_GOT
32-bit offset to symbol-entry within GOT.
- : BFD_RELOC_CRIS_16_GOT
16-bit offset to symbol-entry within GOT.
- : BFD_RELOC_CRIS_32_GOTPLT
32-bit offset to symbol-entry within GOT, with PLT handling.
- : BFD_RELOC_CRIS_16_GOTPLT
16-bit offset to symbol-entry within GOT, with PLT handling.
- : BFD_RELOC_CRIS_32_GOTREL
32-bit offset to symbol, relative to GOT.
- : BFD_RELOC_CRIS_32_PLT_GOTREL
32-bit offset to symbol with PLT entry, relative to GOT.
- : BFD_RELOC_CRIS_32_PLT_PCREL
32-bit offset to symbol with PLT entry, relative to this
relocation.
- : BFD_RELOC_860_COPY
- : BFD_RELOC_860_GLOB_DAT
- : BFD_RELOC_860_JUMP_SLOT
- : BFD_RELOC_860_RELATIVE
- : BFD_RELOC_860_PC26
- : BFD_RELOC_860_PLT26
- : BFD_RELOC_860_PC16
- : BFD_RELOC_860_LOW0
- : BFD_RELOC_860_SPLIT0
- : BFD_RELOC_860_LOW1
- : BFD_RELOC_860_SPLIT1
- : BFD_RELOC_860_LOW2
- : BFD_RELOC_860_SPLIT2
- : BFD_RELOC_860_LOW3
- : BFD_RELOC_860_LOGOT0
- : BFD_RELOC_860_SPGOT0
- : BFD_RELOC_860_LOGOT1
- : BFD_RELOC_860_SPGOT1
- : BFD_RELOC_860_LOGOTOFF0
- : BFD_RELOC_860_SPGOTOFF0
- : BFD_RELOC_860_LOGOTOFF1
- : BFD_RELOC_860_SPGOTOFF1
- : BFD_RELOC_860_LOGOTOFF2
- : BFD_RELOC_860_LOGOTOFF3
- : BFD_RELOC_860_LOPC
- : BFD_RELOC_860_HIGHADJ
- : BFD_RELOC_860_HAGOT
- : BFD_RELOC_860_HAGOTOFF
- : BFD_RELOC_860_HAPC
- : BFD_RELOC_860_HIGH
- : BFD_RELOC_860_HIGOT
- : BFD_RELOC_860_HIGOTOFF
Intel i860 Relocations.
- : BFD_RELOC_OPENRISC_ABS_26
- : BFD_RELOC_OPENRISC_REL_26
OpenRISC Relocations.
- : BFD_RELOC_H8_DIR16A8
- : BFD_RELOC_H8_DIR16R8
- : BFD_RELOC_H8_DIR24A8
- : BFD_RELOC_H8_DIR24R8
- : BFD_RELOC_H8_DIR32A16
H8 elf Relocations.
- : BFD_RELOC_XSTORMY16_REL_12
- : BFD_RELOC_XSTORMY16_24
- : BFD_RELOC_XSTORMY16_FPTR16
Sony Xstormy16 Relocations.
typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
`bfd_reloc_type_lookup'
.......................
*Synopsis*
reloc_howto_type *
bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code);
*Description*
Return a pointer to a howto structure which, when invoked, will perform
the relocation CODE on data from the architecture noted.
`bfd_default_reloc_type_lookup'
...............................
*Synopsis*
reloc_howto_type *bfd_default_reloc_type_lookup
(bfd *abfd, bfd_reloc_code_real_type code);
*Description*
Provides a default relocation lookup routine for any architecture.
`bfd_get_reloc_code_name'
.........................
*Synopsis*
const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
*Description*
Provides a printable name for the supplied relocation code. Useful
mainly for printing error messages.
`bfd_generic_relax_section'
...........................
*Synopsis*
boolean bfd_generic_relax_section
(bfd *abfd,
asection *section,
struct bfd_link_info *,
boolean *);
*Description*
Provides default handling for relaxing for back ends which don't do
relaxing - i.e., does nothing.
`bfd_generic_gc_sections'
.........................
*Synopsis*
boolean bfd_generic_gc_sections
(bfd *, struct bfd_link_info *);
*Description*
Provides default handling for relaxing for back ends which don't do
section gc - i.e., does nothing.
`bfd_generic_merge_sections'
............................
*Synopsis*
boolean bfd_generic_merge_sections
(bfd *, struct bfd_link_info *);
*Description*
Provides default handling for SEC_MERGE section merging for back ends
which don't have SEC_MERGE support - i.e., does nothing.
`bfd_generic_get_relocated_section_contents'
............................................
*Synopsis*
bfd_byte *
bfd_generic_get_relocated_section_contents (bfd *abfd,
struct bfd_link_info *link_info,
struct bfd_link_order *link_order,
bfd_byte *data,
boolean relocateable,
asymbol **symbols);
*Description*
Provides default handling of relocation effort for back ends which
can't be bothered to do it efficiently.
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