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Diffstat (limited to 'bsps/m68k/uC5282/start/linkcmds')
| -rw-r--r-- | bsps/m68k/uC5282/start/linkcmds | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/bsps/m68k/uC5282/start/linkcmds b/bsps/m68k/uC5282/start/linkcmds new file mode 100644 index 0000000000..a3b84294e3 --- /dev/null +++ b/bsps/m68k/uC5282/start/linkcmds @@ -0,0 +1,243 @@ +/* + * This file contains directives for the GNU linker which are specific + * to the Arcturus uC DIMM ColdFire 5282 + * + * Author: W. Eric Norum <norume@aps.anl.gov> + * + * COPYRIGHT (c) 2005-2007. + * 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.org/license/LICENSE. + */ + +/* + * Declare some locations and sizes. + */ +RamBase = DEFINED(RamBase) ? RamBase : 0x0; +RamSize = DEFINED(RamSize) ? RamSize : 16M; +HeapSize = DEFINED(HeapSize) ? HeapSize : 0; +_FlashBase = DEFINED(_FlashBase) ? _FlashBase : 0x10000000; +_FlashSize = DEFINED(_FlashSize) ? _FlashSize : 4M ; + +/* + * Location of downloaded (from TFTP or flash) file + */ +_DownloadLocation = 0x40000; + +/* + * System clock speed + * + * If autodetection of the system clock pased on the PLL ref. clock + * (AFAIK 8MHz for both 64MHz and 80MHz boards) doesn't work then + * you can: + * - define (nonzero) system clock speed from app- linkflags (or here) + * - use a uCbootloader env. var: SYS_CLOCK_SPEED to define it. + * You can also redefine the PLL reference clock speed from linkflags + * or here... + */ +_CPUClockSpeed = DEFINED(_CPUClockSpeed) ? _CPUClockSpeed : 0 ; +_PLLRefClockSpeed = DEFINED(_PLLRefClockSpeed) ? _PLLRefClockSpeed : 8000000; + +/* + * Location of on-chip devices + */ +__IPSBAR = DEFINED(__IPSBAR) ? __IPSBAR : 0x40000000 ; +__SRAMBASE = DEFINED(__SRAMBASE) ? __SRAMBASE : 0x20000000 ; +_VBR = 0x0; + +ENTRY(start) +STARTUP(start.o) + +MEMORY +{ + ram : ORIGIN = 0, LENGTH = 16M + sram : ORIGIN = 0x20000000, LENGTH = 64k +} + +SECTIONS +{ + + _header_offset = 0; + + /* + * Text, data and bss segments + */ + .text _DownloadLocation : { + + *(.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*) + KEEP (*(SORT(.rtemsroset.*))) + *(.gnu.linkonce.r*) + + . = ALIGN (16); + + *(.console_gdb_xfer) + *(.bootstrap_data) + . = ALIGN(16); + _estuff = .; + PROVIDE (_etext = .); + } >ram + + .tdata : { + _TLS_Data_begin = .; + *(.tdata .tdata.* .gnu.linkonce.td.*) + _TLS_Data_end = .; + } > ram + + .tbss : { + _TLS_BSS_begin = .; + *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) + _TLS_BSS_end = .; + } > ram + + _TLS_Data_size = _TLS_Data_end - _TLS_Data_begin; + _TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin; + _TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin; + _TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin; + _TLS_Size = _TLS_BSS_end - _TLS_Data_begin; + _TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss)); + + .data : { + PROVIDE( _data_dest_start = . ); + PROVIDE( _copy_start = .); + *(.data*) + KEEP (*(SORT(.rtemsrwset.*))) + *(.gnu.linkonce.d*) + *(.gcc_except_table*) + *(.jcr) + . = ALIGN (16); + PROVIDE (_edata = .); + PROVIDE (_copy_end = .); + PROVIDE (_data_dest_end = . ); + } >ram + + _data_src_start = LOADADDR(.data); + _data_src_end = _data_src_start + SIZEOF(.data); + + .bss : { + _clear_start = .; + *(.bss*) + *(.gnu.linkonce.b.*) + *(COMMON) + . = ALIGN (16); + PROVIDE (end = .); + _clear_end = .; + WorkAreaBase = .; + } >ram + + /* 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 . */ + +PROVIDE (end_of_all = .); +} |