root/trunk/ld/ld_output.h @ 2633

/*-
 * Copyright (c) 2011,2012 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.
 *
 * $Id$
 */

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,
};

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_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 */
        unsigned os_empty;              /* output section is empty */
        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 */
        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_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 */
        unsigned lo_phdr_num;            /* num of phdrs */
        unsigned lo_phdr_note;           /* create PT_NOTE */
        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 *ld_output_alloc_section(struct ld *, const char *,
    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 *);
void    ld_output_format(struct ld *, char *, char *, char *);
void    ld_output_init(struct ld *);
void    ld_output_write(struct ld *);