diff options
Diffstat (limited to 'ld/ld_output.h')
| -rw-r--r-- | ld/ld_output.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/ld/ld_output.h b/ld/ld_output.h new file mode 100644 index 0000000000000..0f981e2716c98 --- /dev/null +++ b/ld/ld_output.h @@ -0,0 +1,165 @@ +/*- + * Copyright (c) 2011-2013 Kai Wang + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: ld_output.h 2959 2013-08-25 03:12:47Z kaiwang27 $ + */ + +enum ld_output_element_type { + OET_ASSERT, + OET_ASSIGN, + OET_DATA, + OET_ENTRY, + OET_INPUT_SECTION_LIST, + OET_KEYWORD, + OET_OUTPUT_SECTION, + OET_OVERLAY, + OET_DATA_BUFFER, + OET_SYMTAB, + OET_STRTAB +}; + +struct ld_output_element { + enum ld_output_element_type oe_type; /* output element type */ + uint64_t oe_off; /* output element offset */ + void *oe_entry; /* output element */ + void *oe_islist; /* input section list */ + unsigned char oe_insec; /* element inside SECTIONS */ + STAILQ_ENTRY(ld_output_element) oe_next; /* next element */ +}; + +STAILQ_HEAD(ld_output_element_head, ld_output_element); + +struct ld_output_data_buffer { + uint8_t *odb_buf; /* point to data */ + uint64_t odb_size; /* buffer size */ + uint64_t odb_off; /* relative offset in output section */ + uint64_t odb_align; /* buffer alignment */ + uint64_t odb_type; /* buffer data type */ +}; + +struct ld_reloc_entry_head; +struct ld_symbol; + +struct ld_output_section { + Elf_Scn *os_scn; /* output section descriptor */ + char *os_name; /* output section name */ + uint64_t os_addr; /* output section vma */ + uint64_t os_lma; /* output section lma */ + uint64_t os_off; /* output section offset */ + uint64_t os_size; /* output section size */ + uint64_t os_align; /* output section alignment */ + uint64_t os_flags; /* output section flags */ + uint64_t os_type; /* output section type */ + uint64_t os_entsize; /* output seciton entry size */ + uint64_t os_info_val; /* output section info */ + unsigned char os_empty; /* output section is empty */ + unsigned char os_dynrel; /* contains dynamic relocations */ + unsigned char os_pltrel; /* contains PLT relocations */ + unsigned char os_rel; /* contains normal relocations */ + unsigned char os_entsize_set; /* entsize is set */ + char *os_link; /* link to other output section */ + struct ld_symbol *os_secsym; /* assoicated STT_SECTION symbol */ + struct ld_output_section *os_info; /* info refer to other section */ + struct ld_output_section *os_r; /* relocation section */ + struct ld_script_sections_output *os_ldso; + /* output section descriptor */ + struct ld_output_element *os_pe; /* parent element */ + struct ld_output_element_head os_e; /* list of child elements */ + struct ld_reloc_entry_head *os_reloc; /* list of relocations */ + uint64_t os_num_reloc; /* number of relocations */ + STAILQ_ENTRY(ld_output_section) os_next; /* next output section */ + UT_hash_handle hh; /* hash handle */ +}; + +STAILQ_HEAD(ld_output_section_head, ld_output_section); + +struct ld_symver_verneed_head; + +struct ld_output { + int lo_fd; /* output file descriptor */ + Elf *lo_elf; /* output ELF descriptor */ + int lo_ec; /* output object elf class */ + int lo_endian; /* outout object endianess */ + int lo_osabi; /* output object osabi */ + int lo_soname_nameindex; /* string index for DT_SONAME */ + int lo_rpath_nameindex; /* string index for DT_RPATH */ + unsigned lo_phdr_num; /* num of phdrs */ + unsigned lo_phdr_note; /* create PT_NOTE */ + unsigned lo_dso_needed; /* num of DSO referenced */ + unsigned lo_version_index; /* current symver index */ + unsigned lo_verdef_num; /* num of verdef entries */ + unsigned lo_verneed_num; /* num of verneed entries */ + unsigned lo_rel_plt_type; /* type of PLT relocation */ + unsigned lo_rel_dyn_type; /* type of dynamic relocation */ + unsigned lo_fde_num; /* num of FDE in .eh_frame */ + uint64_t lo_shoff; /* section header table offset */ + uint64_t lo_tls_size; /* TLS segment size */ + uint64_t lo_tls_align; /* TLS segment align */ + uint64_t lo_tls_addr; /* TLS segment VMA */ + size_t lo_symtab_shndx; /* .symtab section index */ + UT_array *lo_dso_nameindex; /* array of DSO name indices */ + struct ld_symver_verneed_head *lo_vnlist; /* Verneed list */ + struct ld_output_element_head lo_oelist; /* output element list */ + struct ld_output_section_head lo_oslist; /* output section list */ + struct ld_output_section *lo_ostbl; /* output section hash table */ + struct ld_output_section *lo_interp; /* .interp section. */ + struct ld_output_section *lo_init; /* .init section */ + struct ld_output_section *lo_fini; /* .fini section */ + struct ld_output_section *lo_dynamic; /* .dynamic section. */ + struct ld_output_section *lo_dynsym; /* .dynsym section. */ + struct ld_output_section *lo_dynstr; /* .dynstr section. */ + struct ld_output_section *lo_hash; /* .hash section. */ + struct ld_output_section *lo_verdef; /* .gnu.version.d section */ + struct ld_output_section *lo_verneed; /* .gnu.version.r section */ + struct ld_output_section *lo_versym; /* .gnu.version section */ + struct ld_output_section *lo_gotplt; /* GOT(for PLT) section */ + struct ld_output_section *lo_plt; /* PLT section */ + struct ld_output_section *lo_rel_plt; /* PLT relocation section */ + struct ld_output_section *lo_rel_dyn; /* Dynamic relocation section */ + struct ld_output_section *lo_ehframe_hdr; /* .eh_frame_hdr section */ + struct ld_output_data_buffer *lo_dynamic_odb; /* .dynamic buffer */ + struct ld_output_data_buffer *lo_got_odb; /* GOT section data */ + struct ld_output_data_buffer *lo_plt_odb; /* PLT section data */ + struct ld_output_data_buffer *lo_rel_plt_odb; /* PLT reloc data */ + struct ld_output_data_buffer *lo_rel_dyn_odb; /* dynamic reloc data */ +}; + +struct ld_output_section *ld_output_alloc_section(struct ld *, const char *, + struct ld_output_section *, struct ld_output_section *); +void ld_output_create(struct ld *); +struct ld_output_element *ld_output_create_element(struct ld *, + struct ld_output_element_head *, enum ld_output_element_type, void *, + struct ld_output_element *); +struct ld_output_element *ld_output_create_section_element(struct ld *, + struct ld_output_section *, enum ld_output_element_type, void *, + struct ld_output_element *); +void ld_output_create_elf_sections(struct ld *); +void ld_output_create_string_table_section(struct ld *, const char *, + struct ld_strtab *, Elf_Scn *); +void ld_output_emit_gnu_stack_section(struct ld *); +void ld_output_format(struct ld *, char *, char *, char *); +void ld_output_early_init(struct ld *); +void ld_output_init(struct ld *); +void ld_output_write(struct ld *); |