dspico-usb-examples/examples/usb-microphone/arm7/dldi_ds_arm7.ld

/*--------------------------------------------------------------------------------
	This Source Code Form is subject to the terms of the Mozilla Public License,
	v. 2.0. If a copy of the MPL was not distributed with this file, You can
	obtain one at https://mozilla.org/MPL/2.0/.
--------------------------------------------------------------------------------*/
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(_start)


PHDRS {
	crt0  PT_LOAD FLAGS(7);
	arm7  PT_LOAD FLAGS(7);
	arm7i PT_LOAD FLAGS(0x100007);
}


MEMORY {
	ewram  : ORIGIN = 0x02380000, LENGTH = 12M - 512K
	rom    : ORIGIN = 0x08000000, LENGTH = 32M
	iwram  : ORIGIN = 0x037fc000, LENGTH = (96K - 16K)

	twl_ewram : ORIGIN = 0x02e80000, LENGTH = 512K - 64K
	twl_iwram : ORIGIN = 0x03000000, LENGTH = 256K
}

__iwram_start	=	ORIGIN(iwram);
__iwram_top	=	ORIGIN(iwram)+ LENGTH(iwram);

__sp_irq	=	__iwram_top - 0x100;
__sp_svc	=	__sp_irq - 0x100;
__sp_usr	=	__sp_svc - 0x100;

__irq_flags	=	0x04000000 - 8;
__irq_flagsaux	=	0x04000000 - 0x40;
__irq_vector	=	0x04000000 - 4;

SECTIONS
{

	.twl :
	{
		__arm7i_lma__ = LOADADDR(.twl);
		__arm7i_start__ = .;
		*(.twl)
		*.twl*(.text .stub .text.* .gnu.linkonce.t.*)
		*.twl*(.rodata)
		*.twl*(.roda)
		*.twl*(.rodata.*)
		*.twl*(.data)
		*.twl*(.data.*)
		*.twl*(.gnu.linkonce.d*)
		. = ALIGN(4);
		__arm7i_end__ = .;
	} >twl_iwram AT>twl_ewram :arm7i

	.twl_bss ALIGN(4) (NOLOAD) :
	{
		__twl_bss_start__ = .;
		*(.twl_bss)
		*.twl.*(.dynbss)
		*.twl.*(.gnu.linkonce.b*)
		*.twl.*(.bss*)
		*.twl.*(COMMON)
		. = ALIGN(4);
		__twl_bss_end__ = .;
	} >twl_iwram :NONE

	.crt0	:
	{
		KEEP (*(.crt0))
		. = ALIGN(4);  /* REQUIRED. LD is flaky without it. */
	} >ewram :crt0

	.text :
	{
		__arm7_lma__ = LOADADDR(.text);
		__arm7_start__ = .;
		KEEP (*(SORT_NONE(.init)))
		*(.plt)
		*(.text .stub .text.* .gnu.linkonce.t.*)
		KEEP (*(.text.*personality*))
		/* .gnu.warning sections are handled specially by elf32.em.  */
		*(.gnu.warning)
		*(.glue_7t) *(.glue_7) *(.vfp11_veneer)
		. = ALIGN(4);  /* REQUIRED. LD is flaky without it. */
	} >iwram AT>ewram :arm7

	.fini           :
	{
		KEEP (*(.fini))
	} >iwram AT>ewram

	.rodata :
	{
		*(.rodata)
		*all.rodata*(*)
		*(.roda)
		*(.rodata.*)
		*(.gnu.linkonce.r*)
		SORT(CONSTRUCTORS)
		. = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
	} >iwram AT>ewram

	.ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >iwram AT>ewram

	.ARM.exidx   : {
		__exidx_start = .;
		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
		__exidx_end = .;
	 } >iwram AT>ewram

/* Ensure the __preinit_array_start label is properly aligned.  We
   could instead move the label definition inside the section, but
   the linker would then create the section even if it turns out to
   be empty, which isn't pretty.  */
	.preinit_array     : {
		. = ALIGN(32 / 8);
		PROVIDE (__preinit_array_start = .);
		KEEP (*(.preinit_array))
		PROVIDE (__preinit_array_end = .);
	} >iwram AT>ewram

	.init_array     : {
		PROVIDE (__init_array_start = .);
		KEEP (*(.init_array))
		PROVIDE (__init_array_end = .);
	} >iwram AT>ewram

	.fini_array     : {
		PROVIDE (__fini_array_start = .);
		KEEP (*(.fini_array))
		PROVIDE (__fini_array_end = .);
	} >iwram AT>ewram

	.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 (*(EXCLUDE_FILE (*crtend.o) .ctors))
		KEEP (*(SORT(.ctors.*)))
		KEEP (*(.ctors))
		. = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
	} >iwram AT>ewram

	.dtors :
	{
		KEEP (*crtbegin.o(.dtors))
		KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
		KEEP (*(SORT(.dtors.*)))
		KEEP (*(.dtors))
		. = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
	} >iwram AT>ewram

	.eh_frame :
	{
		KEEP (*(.eh_frame))
		. = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
	} >iwram AT>ewram

	.gcc_except_table :
	{
		*(.gcc_except_table)
		. = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
	} >iwram AT>ewram
	.jcr            : { KEEP (*(.jcr)) } >iwram AT>ewram
	.got            : { *(.got.plt) *(.got) } >iwram AT>ewram

	.data ALIGN(4) : 	{
		__data_start = ABSOLUTE(.);
		*(.data)
		*(.data.*)
		*(.gnu.linkonce.d*)
		CONSTRUCTORS
		. = ALIGN(4);
		__data_end = ABSOLUTE(.) ;
	} >iwram AT>ewram

	.bss ALIGN(4) (NOLOAD) :
	{
		__arm7_end__ = .;
		__bss_start = ABSOLUTE(.);
		__bss_start__ = ABSOLUTE(.);
		*(.dynbss)
		*(.gnu.linkonce.b*)
		*(.bss*)
		*(COMMON)
		. = ALIGN(4);    /* REQUIRED. LD is flaky without it. */
		__bss_end__ = ABSOLUTE(.);
		__end__ = ABSOLUTE(.);
	} >iwram

	/* 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) }
	.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) }
	/* These must appear regardless of  .  */
}