path: root/c/src/lib/libbsp/powerpc/gen83xx/startup/linkcmds.base

/**
 * @file
 *
 * Derived from internal linker script of GNU ld (GNU Binutils) 2.18 for elf32ppc emulation.
 */

OUTPUT_FORMAT ("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
OUTPUT_ARCH (powerpc)
ENTRY (start)

bsp_ram_start = ORIGIN (RAM);
bsp_ram_end = ORIGIN (RAM) + LENGTH (RAM);
bsp_ram_size = LENGTH (RAM);

bsp_rom_start = ORIGIN (ROM);
bsp_rom_end = ORIGIN (ROM) + LENGTH (ROM);
bsp_rom_size = LENGTH (ROM);

bsp_section_align = 32;

RamBase = bsp_ram_start;
RamSize = bsp_ram_size;
HeapSize = DEFINED(HeapSize) ? HeapSize : 0x0;

SECTIONS {
	/*
	 * BSP: MPC83XX registers
	 */
	.mpc83xx_regs (NOLOAD) : { 
		IMMRBAR = .;
		mpc83xx_regs*(.text)
		mpc83xx_regs*(.data)
		mpc83xx_regs*(.bss)
		mpc83xx_regs*(COMMON)
	} > MPC83XX_REGS

	/*
	 * BSP: Reset configuration
	 */
	.resconf 0x0 : {
		*(.resconf)
	} > RAM

	/*
	 * BSP: Exception vectors
	 */
	.vectors 0x100 : {
		*(.vectors)
	} > RAM

	/* 
	 * BSP: The initial stack will live in this area - between the vectors
	 * and the text section.
	 */

	.text 0x10000 : {
		/*
		 * BSP: Start of text section
		 */
		bsp_section_text_start = .;

		/*
		 * BSP: System startup entry
		 */
		KEEP (*(.entry))

		/*
		 * BSP: Moved into .text from .init
		 */
		KEEP (*(.init))

		*(.text .stub .text.* .gnu.linkonce.t.*)
		KEEP (*(.text.*personality*))
		/* .gnu.warning sections are handled specially by elf32.em.  */
		*(.gnu.warning)
		*(.glink)
		
		/*
		 * BSP: Special FreeBSD sysctl sections
		 */
		. = ALIGN (16);
		__start_set_sysctl_set = .;
		*(set_sysctl_*);
		__stop_set_sysctl_set = ABSOLUTE(.);
		*(set_domain_*);
		*(set_pseudo_*);

		/*
		 * BSP: Moved into .text from .*
		 */
		*(.rodata .rodata.* .gnu.linkonce.r.*)
		*(.rodata1)
		*(.interp)
		*(.note.gnu.build-id)
		*(.hash)
		*(.gnu.hash)
		*(.dynsym)
		*(.dynstr)
		*(.gnu.version)
		*(.gnu.version_d)
		*(.gnu.version_r)
		*(.eh_frame_hdr)

		. = ALIGN (4);

		_bsd__start_set_modmetadata_set = .;
		*(_bsd_set_modmetadata_set);
		_bsd__stop_set_modmetadata_set = .;

		_bsd__start_set_sysctl_set = .;
		*(_bsd_set_sysctl_set);
		_bsd__stop_set_sysctl_set = .;

		/*
		 * BSP: Magic PPC stuff
		 */
		*(.PPC.*)

		/*
		 * BSP: Required by cpukit/score/src/threadhandler.c
		 */
		PROVIDE (_fini = .);

		/*
		 * BSP: Moved into .text from .fini
		 */
		KEEP (*(.fini))

		. = ALIGN (bsp_section_align);

		PROVIDE (__etext = .);
		PROVIDE (_etext = .);
		PROVIDE (etext = .);
	} > RAM

	.sdata2 : {
		PROVIDE (_SDA2_BASE_ = 32768);

		*(.sdata2 .sdata2.* .gnu.linkonce.s2.*)

		. = ALIGN (bsp_section_align);
	} > RAM

	.sbss2 : {
		*(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)

		. = ALIGN (bsp_section_align);

		/*
		 * BSP: End of text section
		 */
		bsp_section_text_end = .;
	} > RAM

	.data : {
		/*
		 * BSP: Start of data section
		 */
		bsp_section_data_start = .;

		/*
		 * BSP: Moved into .data from .ctors
		 */
		/* gcc uses crtbegin.o to find the start of
		   the constructors, so we make sure it is
		   first.  Because this is a wildcard, it
		   doesn't matter if the user does not
		   actually link against crtbegin.o; the
		   linker won't look for a file to match a
		   wildcard.  The wildcard also means that it
		   doesn't matter which directory crtbegin.o
		   is in.  */
		KEEP (*crtbegin.o(.ctors))
		KEEP (*crtbegin?.o(.ctors))
		/* We don't want to include the .ctor section from
		   the crtend.o file until after the sorted ctors.
		   The .ctor section from the crtend file contains the
		   end of ctors marker and it must be last */
		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
		KEEP (*(SORT(.ctors.*)))
		KEEP (*(.ctors))

		/*
		 * BSP: Moved into .data from .dtors
		 */
		KEEP (*crtbegin.o(.dtors))
		KEEP (*crtbegin?.o(.dtors))
		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
		KEEP (*(SORT(.dtors.*)))
		KEEP (*(.dtors))

		/*
		 * BSP: Moved into .data from .*
		 */
		*(.tdata .tdata.* .gnu.linkonce.td.*)
		*(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon)
		*(.data1)
		KEEP (*(.eh_frame))
		*(.gcc_except_table .gcc_except_table.*)
		KEEP (*(.jcr))
		*(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*)
		*(.fixup)
		*(.got1)
		*(.got2)
		*(.dynamic)
		*(.got)
		*(.plt)
		PROVIDE_HIDDEN (__preinit_array_start = .);
		KEEP (*(.preinit_array))
		PROVIDE_HIDDEN (__preinit_array_end = .);
		PROVIDE_HIDDEN (__init_array_start = .);
		KEEP (*(SORT(.init_array.*)))
		KEEP (*(.init_array))
		PROVIDE_HIDDEN (__init_array_end = .);
		PROVIDE_HIDDEN (__fini_array_start = .);
		KEEP (*(.fini_array))
		KEEP (*(SORT(.fini_array.*)))
		PROVIDE_HIDDEN (__fini_array_end = .);

		*(.data .data.* .gnu.linkonce.d.*)
		KEEP (*(.gnu.linkonce.d.*personality*))
		SORT(CONSTRUCTORS)

		. = ALIGN (bsp_section_align);
	} > RAM

	.sdata : {
		PROVIDE (_SDA_BASE_ = 32768);
		*(.sdata .sdata.* .gnu.linkonce.s.*)

		. = ALIGN (bsp_section_align);

		_edata = .;
		PROVIDE (edata = .);

		/*
		 * BSP: End of data section
		 */
		bsp_section_data_end = .;
	} > RAM

	.sbss : {
		/*
		 * BSP: Start of bss section
		 */
		bsp_section_bss_start = .;

		__bss_start = .;

		PROVIDE (__sbss_start = .); PROVIDE (___sbss_start = .);
		*(.scommon)
		*(.dynsbss)
		*(.sbss .sbss.* .gnu.linkonce.sb.*)
		PROVIDE (__sbss_end = .); PROVIDE (___sbss_end = .);

		. = ALIGN (bsp_section_align);
	} > RAM

	.bss : {
		*(COMMON)
		*(.dynbss)
		*(.bss .bss.* .gnu.linkonce.b.*)

		. = ALIGN (bsp_section_align);

		__end = .;
		_end = .;
		PROVIDE (end = .);

		/*
		 * BSP: End of bss section
		 */
		bsp_section_bss_end = .;
	} > RAM

	/*
	 * BSP: Section sizes
	 */
	bsp_section_text_size = bsp_section_text_end - bsp_section_text_start;
	bsp_section_data_size = bsp_section_data_end - bsp_section_data_start;
	bsp_section_bss_size = bsp_section_bss_end - bsp_section_bss_start;

	/*
	 * BSP: Interrupt stack
	 */
	bsp_interrupt_stack_start = bsp_section_bss_end;
	bsp_interrupt_stack_end = bsp_interrupt_stack_start + 32k;
	bsp_interrupt_stack_size = bsp_interrupt_stack_end - bsp_interrupt_stack_start;

	/*
	 * BSP: Work area start
	 */
	bsp_work_area_start = bsp_interrupt_stack_end;
	WorkAreaBase = bsp_work_area_start;
	
	/* Stabs debugging sections.  */
	.stab          0 : { *(.stab) }
	.stabstr       0 : { *(.stabstr) }
	.stab.excl     0 : { *(.stab.excl) }
	.stab.exclstr  0 : { *(.stab.exclstr) }
	.stab.index    0 : { *(.stab.index) }
	.stab.indexstr 0 : { *(.stab.indexstr) }
	.comment       0 : { *(.comment) }
	/* DWARF debug sections.
	   Symbols in the DWARF debugging sections are relative to the beginning
	   of the section so we begin them at 0.  */
	/* DWARF 1 */
	.debug          0 : { *(.debug) }
	.line           0 : { *(.line) }
	/* GNU DWARF 1 extensions */
	.debug_srcinfo  0 : { *(.debug_srcinfo) }
	.debug_sfnames  0 : { *(.debug_sfnames) }
	/* DWARF 1.1 and DWARF 2 */
	.debug_aranges  0 : { *(.debug_aranges) }
	.debug_pubnames 0 : { *(.debug_pubnames) }
	/* DWARF 2 */
	.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) }
	/* SGI/MIPS DWARF 2 extensions */
	.debug_weaknames 0 : { *(.debug_weaknames) }
	.debug_funcnames 0 : { *(.debug_funcnames) }
	.debug_typenames 0 : { *(.debug_typenames) }
	.debug_varnames  0 : { *(.debug_varnames) }
	/* DWARF 3 */
	.debug_pubtypes 0 : { *(.debug_pubtypes) }
	.debug_ranges   0 : { *(.debug_ranges) }
	.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }

	/DISCARD/ : {
		*(.note.GNU-stack) *(.gnu_debuglink)
	}

	/*
	 * BSP: Catch all unknown sections
	 */
	.nirvana : {
		*(*)
	} > NIRVANA
}