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ENTRY(_enter)
MEMORY
{
itim (airwx) : ORIGIN = 0x8000000, LENGTH = 0x2000
ram (arw!xi) : ORIGIN = 0x80000000, LENGTH = 0x4000
rom (irx!wa) : ORIGIN = 0x20000000, LENGTH = 0x10000000
}
PHDRS
{
rom PT_LOAD;
text PT_LOAD;
ram PT_LOAD;
ram_init PT_LOAD;
itim_init PT_LOAD;
lim_init PT_LOAD;
}
SECTIONS
{
__stack_size = DEFINED(__stack_size) ? __stack_size : 0x1000;
/* ROM SECTION
*
* The following sections contain data which lives in read-only memory, if
* such memory is present in the design, for the entire duration of program
* execution.
*/
.init : {
/* The _enter symbol is placed in the .text.metal.init.enter section
* and must be placed at the beginning of the program */
KEEP (*(.text.metal.init.enter))
KEEP (*(.text.metal.init.*))
KEEP (*(SORT_NONE(.init)))
KEEP (*(.text.libgloss.start))
} >rom :rom
.fini : {
KEEP (*(SORT_NONE(.fini)))
} >rom :rom
.preinit_array : ALIGN(8) {
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);
} >rom :rom
.init_array : ALIGN(8) {
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
PROVIDE_HIDDEN (__init_array_end = .);
} >rom :rom
.fini_array : ALIGN(8) {
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
PROVIDE_HIDDEN (__fini_array_end = .);
} >rom :rom
.ctors : {
KEEP (*crtbegin.o(.ctors))
KEEP (*crtbegin?.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
} >rom :rom
.dtors : {
KEEP (*crtbegin.o(.dtors))
KEEP (*crtbegin?.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} >rom : rom
.rodata : {
*(.rdata)
*(.rodata .rodata.*)
*(.gnu.linkonce.r.*)
. = ALIGN(8);
*(.srodata.cst16)
*(.srodata.cst8)
*(.srodata.cst4)
*(.srodata.cst2)
*(.srodata .srodata.*)
} >rom :rom
/* ITIM SECTION
*
* The following sections contain data which is copied from read-only
* memory into an instruction tightly-integrated memory (ITIM), if one
* is present in the design, during pre-main program initialization.
*
* Generally, the data copied into the ITIM should be performance-critical
* functions which benefit from low instruction-fetch latency.
*/
.itim : ALIGN(8) {
*(.itim .itim.*)
*(.itim2 .itim2.*)
} >itim AT>rom :itim_init
PROVIDE( metal_segment_itim_source_start = LOADADDR(.itim) );
PROVIDE( metal_segment_itim_target_start = ADDR(.itim) );
PROVIDE( metal_segment_itim_target_end = ADDR(.itim) + SIZEOF(.itim) );
/* LIM SECTION
*
* The following sections contain data which is copied from read-only
* memory into a loosely integrated memory (LIM), which is shared with L2
* cache, during pre-main program initialization.
*
* Generally, the data copied into the LIM should be performance-critical
* functions which benefit from low instruction-fetch latency.
*/
.lim : ALIGN(8) {
*(.lim .lim.*)
} >ram AT>rom :lim_init
PROVIDE( metal_segment_lim_source_start = LOADADDR(.lim) );
PROVIDE( metal_segment_lim_target_start = ADDR(.lim) );
PROVIDE( metal_segment_lim_target_end = ADDR(.lim) + SIZEOF(.lim) );
/* TEXT SECTION
*
* The following section contains the code of the program, excluding
* everything that's been allocated into the ITIM/LIM already
*/
.text : {
*(.text.unlikely .text.unlikely.*)
*(.text.startup .text.startup.*)
*(.text .text.*)
*(.gnu.linkonce.t.*)
} >rom :text
/* RAM SECTION
*
* The following sections contain data which is copied from read-only
* memory into a read-write-capable memory such as data tightly-integrated
* memory (DTIM) or another main memory, as well as the BSS, stack, and
* heap.
*
* You might notice that .data, .tdata, .tbss, .tbss_space, and .bss all
* have an apparently unnecessary ALIGN at their top. This is because
* the implementation of _start in Freedom Metal libgloss depends on the
* ADDR and LOADADDR being 8-byte aligned.
*/
.data : {
*(.data .data.*)
*(.gnu.linkonce.d.*)
. = ALIGN(8);
PROVIDE( __global_pointer$ = . + 0x800 );
*(.sdata .sdata.* .sdata2.*)
*(.gnu.linkonce.s.*)
} >ram AT>rom :ram_init
PROVIDE( metal_segment_data_source_start = LOADADDR(.data) );
PROVIDE( metal_segment_data_target_start = ADDR(.data) );
PROVIDE( metal_segment_data_target_end = ADDR(.data) + SIZEOF(.data) );
.bss (NOLOAD) : {
*(.sbss*)
*(.gnu.linkonce.sb.*)
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
} >ram :ram
PROVIDE( metal_segment_bss_start = ADDR(.bss) );
PROVIDE( metal_segment_bss_end = ADDR(.bss) + SIZEOF(.bss) );
.stack (NOLOAD) : ALIGN(16) {
. += __stack_size;
PROVIDE( _sp = . );
} >ram :ram
PROVIDE( metal_segment_stack_start = ADDR(.stack) );
PROVIDE( metal_segment_stack_end = ADDR(.stack) + SIZEOF(.stack) );
PROVIDE(__stack_size = __stack_size);
.heap (NOLOAD) : ALIGN(8) {
PROVIDE( __end = . );
PROVIDE( __heap_start = . );
. = LENGTH(ram) - ( . - ORIGIN(ram));
PROVIDE( _heap_end = . );
PROVIDE( __heap_end = . );
} >ram :ram
PROVIDE( metal_segment_heap_start = ADDR(.heap) );
PROVIDE( metal_segment_heap_end = ADDR(.heap) + SIZEOF(.heap) );
/* C++ exception handling information is
* not useful with our current runtime environment,
* and it consumes flash space. Discard it until
* we have something that can use it
*/
/DISCARD/ : {
*(.eh_frame .eh_frame.*)
}
}
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