From fe32208840b1eb215e5925a31ef79d77709082fa Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Mon, 5 Apr 2010 17:06:57 +0000 Subject: 2010-04-05 Thomas Znidar * ChangeLog, Makefile.am, README, bsp_specs, configure.ac, gdb-init, preinstall.am, clock/clock.c, console/console.c, console/debugio.c, include/bsp.h, include/tm27.h, make/custom/mcf5225x.cfg, start/start.S, startup/bspclean.c, startup/bspstart.c, startup/init5225x.c, startup/linkcmds, timer/timer.c: New files. --- c/src/lib/libbsp/m68k/mcf5225x/startup/linkcmds | 174 ++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 c/src/lib/libbsp/m68k/mcf5225x/startup/linkcmds (limited to 'c/src/lib/libbsp/m68k/mcf5225x/startup/linkcmds') diff --git a/c/src/lib/libbsp/m68k/mcf5225x/startup/linkcmds b/c/src/lib/libbsp/m68k/mcf5225x/startup/linkcmds new file mode 100644 index 0000000000..fd0c741679 --- /dev/null +++ b/c/src/lib/libbsp/m68k/mcf5225x/startup/linkcmds @@ -0,0 +1,174 @@ +/* + * This file contains directives for the GNU linker which are specific + * to the Freescale ColdFire mcf52258 + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE.e + * + * $Id$ + */ + +/* + * Declare some sizes. + */ +RamBase = DEFINED(RamBase) ? RamBase : 0x20000000; +RamSize = DEFINED(RamSize) ? RamSize : 64K; +HeapSize = DEFINED(HeapSize) ? HeapSize : 0x0; +_StackSize = DEFINED(_StackSize) ? _StackSize : 0x400; +_FlashBase = DEFINED(_FlashBase) ? _FlashBase : 0x00000000; + +_VBR = 0x20000000; + +ENTRY(start) + +MEMORY +{ + sram : ORIGIN = 0x20000000, LENGTH = 64K + flash : ORIGIN = 0x00000000, LENGTH = 512K +} + +SECTIONS +{ + /* + * Text, data and bss segments + */ + .text : { + + *(.text*) + *(.ram_code) + + /* + * C++ constructors/destructors + */ + *(.gnu.linkonce.t.*) + + /* + * Initialization and finalization code. + * + * Various files can provide initialization and finalization + * functions. crtbegin.o and crtend.o are two instances. The + * body of these functions are in .init and .fini sections. We + * accumulate the bodies here, and prepend function prologues + * from crti.o and function epilogues from crtn.o. crti.o must + * be linked first; crtn.o must be linked last. Because these + * are wildcards, it doesn't matter if the user does not + * actually link against crti.o and crtn.o; the linker won't + * look for a file to match a wildcard. The wildcard also + * means that it doesn't matter which directory crti.o and + * crtn.o are in. + */ + PROVIDE (_init = .); + *crti.o(.init) + *(.init) + *crtn.o(.init) + PROVIDE (_fini = .); + *crti.o(.fini) + *(.fini) + *crtn.o(.fini) + + /* + * Special FreeBSD sysctl sections. + */ + . = ALIGN (16); + __start_set_sysctl_set = .; + *(set_sysctl_*); + __stop_set_sysctl_set = ABSOLUTE(.); + *(set_domain_*); + *(set_pseudo_*); + + /* + * C++ constructors/destructors + * + * gcc uses crtbegin.o to find the start of the constructors + * and destructors 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. The + * constructor and destructor list are terminated in + * crtend.o. The same comments apply to it. + */ + . = ALIGN (16); + *crtbegin.o(.ctors) + *(.ctors) + *crtend.o(.ctors) + *crtbegin.o(.dtors) + *(.dtors) + *crtend.o(.dtors) + + /* + * Exception frame info + */ + . = ALIGN (16); + *(.eh_frame) + + /* + * Read-only data + */ + . = ALIGN (16); + _rodata_start = . ; + *(.rodata*) + *(.gnu.linkonce.r*) + + . = ALIGN (16); + + *(.console_gdb_xfer) + *(.bootstrap_data) + . = ALIGN(16); + _estuff = .; + PROVIDE (_etext = .); + } >flash + + .data 0x20000400 : AT (_estuff) + { + PROVIDE( _data_dest_start = . ); + PROVIDE( _copy_start = .); + *(.data) + *(.gnu.linkonce.d*) + *(.gcc_except_table*) + *(.jcr) + . = ALIGN (16); + PROVIDE (_edata = .); + PROVIDE (_copy_end = .); + PROVIDE (_data_dest_end = . ); + } >sram + + _data_src_start = _estuff; + _data_src_end = _data_dest_start + SIZEOF(.data); + + .bss : + { + PROVIDE (_clear_start = .); + *(.bss*) + *(COMMON) + . = ALIGN (16); + PROVIDE (_end = .); + PROVIDE (_clear_end = .); + } >sram + + .stack : + { + /* + * Starting Stack + */ + . += _StackSize; + . = ALIGN (16); + PROVIDE(_StackInit = .); + PROVIDE(WorkAreaBase = .); + } >sram + + /* 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) } + + PROVIDE (end_of_all = .); +} -- cgit v1.2.3