cs350/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) }
}