root/mk/uw-prog-ldscript

/*
 * This is a pile of crap that tells the linker how to link the kernel,
 * because it's too stupid to be able to work it out on its own.
 */

/* UW - TBB - Jan, 2012
 * Adopted from kern/arch/mips/conf/ldscript that is used
 * for the kernel to be used with user programs.
 * Mainly done to have data segments start at 0x10000000 but
 * also may clean things up a bit relative to previous versions.
 */

ENTRY(__start)

_DYNAMIC_LINK = 0;
SECTIONS
{
        /*
         * Base address for the user programs.
         */
        . = 0x00400000;

        /*
         * Read-only loaded sections.
         */

        /* code */
        .text : { *(.text) }

        /* linker-provided symbol for end of code */
        _etext = .;

        /* read-only data */
        .rodata : { *(.rodata) *(.rodata.*) }

        /* MIPS register-usage blather */
        .reginfo : { *(.reginfo) }

        /*
         * Move to a fresh page. This method puts read-only and
         * read-write material on separate pages without having to
         * waste space on page-alignment in the on-disk file; the
         * on-disk page that contains both text and data is mapped
         * twice.
         *
         * For mips kernels we can't write-protect the text anyhow so
         * there's no point doing it.
         */
        /* . = . + 0x1000; */

        /*
         * Read-write loaded sections.
         */

  /* UW - TBB start data segment at 0x10000000 */
  . = 0x10000000;

        /* initialized data */
        .data : {
                *(.data)
                CONSTRUCTORS
        }

        /* Value for GP register */
        _gp = ALIGN(16) + 0x7ff0;

        /* Small data accessed via GP register */
        .lit8 :  { *(.lit8) }
        .lit4 :  { *(.lit4) }
        .sdata : { *(.sdata) }

        /* cleared-to-zero data */
        .sbss : { *(.sbss *.scommon) }
        .bss : { *(.bss) *(COMMON) }

        /* linker-provided symbol for end of program */
        _end = .;

        /*
         * Debug info
         */

        /* stabs debug sections */
        .stab 0:                { *(.stab) }
        .stabstr 0:             { *(.stabstr) }

        /* DWARF debug sections */
        .debug 0:               { *(.debug) }
        .line 0:                { *(.line) }
        .debug_srcinfo 0:       { *(.debug_srcinfo) }
        .debug_sfnames 0:       { *(.debug_sfnames) }
        .debug_aranges 0:       { *(.debug_aranges) }
        .debug_pubnames 0:      { *(.debug_pubnames) }
        .debug_info 0:          { *(.debug_info .gnu.linkonce.wi.*) }
        .debug_abbrev 0:        { *(.debug_abbrev) }
        .debug_line 0:          { *(.debug_line) }
        .debug_frame 0:         { *(.debug_frame) }
        .debug_str 0:           { *(.debug_str) }
        .debug_loc 0:           { *(.debug_loc) }
        .debug_macinfo 0:       { *(.debug_macinfo) }
        .debug_weaknames 0:     { *(.debug_weaknames) }
        .debug_funcnames 0:     { *(.debug_funcnames) }
        .debug_typenames 0:     { *(.debug_typenames) }
        .debug_varnames 0:      { *(.debug_varnames) }

        /* These must appear regardless of  .  */
        .gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
        .gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
}