diff options
Diffstat (limited to 'bsps/m68k/gen68360/start/linkcmds.prom')
| -rw-r--r-- | bsps/m68k/gen68360/start/linkcmds.prom | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/bsps/m68k/gen68360/start/linkcmds.prom b/bsps/m68k/gen68360/start/linkcmds.prom new file mode 100644 index 0000000000..777700e6a1 --- /dev/null +++ b/bsps/m68k/gen68360/start/linkcmds.prom @@ -0,0 +1,169 @@ +/* + * This file contains GNU linker directives for a generic MC68360 board. + * Variations in memory size and allocation can be made by + * overriding some values with linker command-line arguments. + * + * These linker directives are for producing a PROM version. + * The data segment is placed at the end of the text segment in the PROM. + * The start-up code takes care of copying this region to RAM. + * + * Saskatchewan Accelerator Laboratory + * University of Saskatchewan + * Saskatoon, Saskatchewan, CANADA + * eric@skatter.usask.ca + */ + +/* + * Declare some sizes. + * A heap size of 0 means `use all available memory for the heap'. + */ +RamBase = DEFINED(RamBase) ? RamBase : 0x0; +RamSize = DEFINED(RamSize) ? RamSize : 64M; +HeapSize = DEFINED(HeapSize) ? HeapSize : 0x0; +_StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000; + +/* + * Declare on-board memory. + */ +MEMORY { + ram : ORIGIN = 0x00000000, LENGTH = 64M + rom : ORIGIN = 0x0F000000, LENGTH = 1M + dpram : ORIGIN = 0x0E000000, LENGTH = 8k +} + +/* + * Load objects + */ +SECTIONS { + /* + * Boot PROM + */ + rom : { + _RomBase = .; + } >rom + + /* + * Dynamic RAM + */ + ram : { + RamBase = .; + } >ram + + /* + * Text, data and bss segments + */ + .text : AT(0x0) { + *(.text*) + + /* + * C++ constructors/destructors + */ + *(.gnu.linkonce.t.*) + + /* + * Initialization and finalization code. + */ + 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 + */ + . = 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); + PROVIDE (etext = .); + } >rom + + .tdata : { + _TLS_Data_begin = .; + *(.tdata .tdata.* .gnu.linkonce.td.*) + _TLS_Data_end = .; + } >rom + + .tbss : { + _TLS_BSS_begin = .; + *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) + _TLS_BSS_end = .; + } >rom + + _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 : AT(SIZEOF(.text)) { + _copy_start = .; + *(.data) + KEEP (*(SORT(.rtemsrwset.*))) + *(.gnu.linkonce.d*) + *(.jcr) + *(.gcc_except_table*) + . = ALIGN (16); + PROVIDE (edata = .); + _copy_end = .; + } >ram + .bss : { + M68Kvec = .; + . += (256 * 4); + *(.dynbss) + *(.bss* .gnu.linkonce.b.*) + *(COMMON) + . = ALIGN (16); + PROVIDE (end = .); + + . += _StackSize; + . = ALIGN (16); + _stack_init = .; + _clear_end = .; + + WorkAreaBase = .; + } >ram + + /* + * On-chip memory/peripherals + */ + dpram : { + m360 = .; + . += (8 * 1024); + } >dpram +} |