/**************************************************************************** * examples/nxflat/nxflat.ld * * Copyright (C) 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 * COPYRIGHT OWNER 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. * ****************************************************************************/ MEMORY { ISPACE : ORIGIN = 0x0, LENGTH = 2097152 DSPACE : ORIGIN = 0x0, LENGTH = 2097152 } /**************************************************************************** * The XFLAT program image is divided into two segments: * * (1) ISpace (Instruction Space). This is the segment that contains * code (.text). Everything in the segment should be fetch-able * machine PC instructions (jump, branch, call, etc.). * (2) DSpace (Data Space). This is the segment that contains both * read-write data (.data, .bss) as well as read-only data (.rodata). * Everything in this segment should be access-able with machine * with machine load and store instructions. ****************************************************************************/ SECTIONS { .text 0x00000000 : { /* ISpace is located at address 0. Every (unrelocated) ISpace * address is an offset from the begining of this segment. */ text_start = . ; *(.text) *(.text.*) *(.gnu.warning) *(.stub) *(.glue_7) *(.glue_7t) *(.jcr) /* C++ support: The .init and .fini sections contain XFLAT- * specific logic to manage static constructors and destructors. */ *(.gnu.linkonce.t.*) *(.init) *(.fini) /* This is special code area at the end of the normal text section. It contains a small lookup table at the start followed by the code pointed to by entries in the lookup table. */ . = ALIGN (4) ; PROVIDE(__ctbp = .); *(.call_table_data) *(.call_table_text) _etext = . ; } > ISPACE /* DSpace is also located at address 0. Every (unrelocated) DSpace * address is an offset from the begining of this segment. */ .data 0x00000000 : { __data_start = . ; *(.rodata) *(.rodata1) *(.rodata.*) *(.gnu.linkonce.r*) *(.data) *(.data1) *(.data.*) *(.gnu.linkonce.d*) *(.data1) *(.eh_frame) *(.gcc_except_table) *(.gnu.linkonce.s.*) *(__libc_atexit) *(__libc_subinit) *(__libc_subfreeres) *(.note.ABI-tag) /* C++ support. For each global and static local C++ object, * GCC creates a small subroutine to construct the object. Pointers * to these routines (not the routines themselves) are stored as * simple, linear arrays in the .ctors section of the object file. * Similarly, pointers to global/static destructor routines are * stored in .dtors. */ *(.gnu.linkonce.d.*) _ctors_start = . ; *(.ctors) _ctors_end = . ; _dtors_start = . ; *(.dtors) _dtors_end = . ; _edata = . ; edata = ALIGN( 0x10 ) ; } > DSPACE .bss : { __bss_start = _edata ; *(.dynsbss) *(.sbss) *(.sbss.*) *(.scommon) *(.dynbss) *(.bss) *(.bss.*) *(.bss*) *(.gnu.linkonce.b*) *(COMMON) end = ALIGN( 0x10 ) ; _end = ALIGN( 0x10 ) ; } > DSPACE .got 0 : { *(.got.plt) *(.got) } .junk 0 : { *(.rel*) *(.rela*) } /* 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) } .debug_abbrev 0 : { *(.debug_abbrev) } .debug_info 0 : { *(.debug_info) } .debug_line 0 : { *(.debug_line) } .debug_pubnames 0 : { *(.debug_pubnames) } .debug_aranges 0 : { *(.debug_aranges) } }