161 lines
4.3 KiB
Plaintext
161 lines
4.3 KiB
Plaintext
/*
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*uncomment this if you want the linker to output srecords.
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OUTPUT_FORMAT(srec)
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*
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*/
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ENTRY(start)
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OUTPUT_ARCH(TARGET_OBJ_FORMAT)
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SEARCH_DIR(.)
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STARTUP(cygmon-crt0.o)
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GROUP(cygmon-salib.o -lc -lgcc -lc)
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/*
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* The memory map looks like this:
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* +--------------------+ <- low memory
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* | .text |
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* | _stext |
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* | _etext |
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* | ctor list | the ctor and dtor lists are for
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* | dtor list | C++ support
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* | _end_text |
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* +--------------------+
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* | .data | initialized data goes here
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* | _sdata |
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* | _edata |
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* +--------------------+
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* | .bss |
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* | __bss_start | start of bss, cleared by crt0
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* | _end | start of heap, used by sbrk()
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* +--------------------+
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* | heap space |
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* | _ENDHEAP |
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* | stack space |
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* | __stack | top of stack
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* +--------------------+ <- high memory
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*/
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_STACK_SIZE = (16 * 1024);
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_RAM_SIZE = 1M;
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_RAM_START = 0x4000;
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_RAM_END = _RAM_START + _RAM_SIZE;
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/*
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* Setup the standard memory map. The stack grows down towards low memory.
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*/
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MEMORY
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{
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ram : ORIGIN = 0x4000, LENGTH = 1M
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}
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__stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE;
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/*
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* All the symbols that might be accessed from C code need to be
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* listed twice, once with an additional underscore. aout format needs
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* and extra underscore, whereas coff & elf doesn't. This is to work
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* with both.
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*/
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/*
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* Initalize some symbols to be zero so we can reference them in the
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* crt0 without core dumping. These functions are all optional, but
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* we do this so we can have our crt0 always use them if they exist.
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* This is so BSPs work better when using the crt0 installed with gcc.
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* We have to initalize them twice, so we cover a.out (which prepends
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* an underscore) and coff object file formats.
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*/
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PROVIDE (hardware_init_hook = 0);
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PROVIDE (_hardware_init_hook = 0);
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PROVIDE (software_init_hook = 0);
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PROVIDE (_software_init_hook = 0);
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SECTIONS
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{
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.text : {
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stext = .;
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_stext = .;
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CREATE_OBJECT_SYMBOLS
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*(.text)
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__CTOR_LIST__ = .;
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LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
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*(.ctors)
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LONG(0)
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__CTOR_END__ = .;
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__DTOR_LIST__ = .;
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LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
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*(.dtors)
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LONG(0)
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__DTOR_END__ = .;
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*(.init)
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*(.lit)
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*(.rodata)
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*(.rodata.*)
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*(.shdata)
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*(.eh_frame)
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*(.gnu.linkonce.t*)
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*(.gnu.linkonce.r*)
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*(.gcc_except_table)
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*(.fini)
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_etext = .;
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} > ram
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.shbss SIZEOF(.text) + ADDR(.text) : {
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*(.shbss)
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}
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.talias : { } > ram
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.data : {
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sdata = .;
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_sdata = .;
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*(.data)
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*(.gnu.linkonce.d*)
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edata = .;
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_edata = .;
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} > ram
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.bss SIZEOF(.data) + ADDR(.data) : {
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sbss = . ;
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_sbss = . ;
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__bss_start = ALIGN(0x8);
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__bss_start = ALIGN(0x8);
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*(.bss)
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*(COMMON)
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end = ALIGN(0x8);
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_end = ALIGN(0x8);
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__end = ALIGN(0x8);
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ebss = .;
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_ebss = .;
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}
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.mstack : { } > ram
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.rstack : { } > ram
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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/* DWARF debug sections.
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Symbols in the DWARF debugging sections are relative to the beginning
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of the section so we begin them at 0. */
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/* DWARF 1 */
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.debug 0 : { *(.debug) }
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.line 0 : { *(.line) }
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/* GNU DWARF 1 extensions */
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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/* DWARF 2 */
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.debug_info 0 : { *(.debug_info) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_line 0 : { *(.debug_line) }
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.debug_frame 0 : { *(.debug_frame) }
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.debug_str 0 : { *(.debug_str) }
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.debug_loc 0 : { *(.debug_loc) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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/* SGI/MIPS DWARF 2 extensions */
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.debug_weaknames 0 : { *(.debug_weaknames) }
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.debug_funcnames 0 : { *(.debug_funcnames) }
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.debug_typenames 0 : { *(.debug_typenames) }
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.debug_varnames 0 : { *(.debug_varnames) }
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/* These must appear regardless of . */
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}
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