221 lines
5.8 KiB
PHP
221 lines
5.8 KiB
PHP
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/*
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* Linker script for libmaple.
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*
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* Original author "lanchon" from ST forums, with modifications by LeafLabs.
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*/
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OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
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/*
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* Configure other libraries we want in the link.
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*
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* libgcc, libc, and libm are common across supported toolchains.
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* However, some toolchains require additional archives which aren't
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* present everywhere (e.g. ARM's gcc-arm-embedded releases).
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*
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* To hack around this, we let the build system specify additional
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* archives by putting the right extra_libs.inc (in a directory under
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* toolchains/) in our search path.
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*/
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GROUP(libgcc.a libc.a libm.a)
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INCLUDE extra_libs.inc
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/*
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* These force the linker to search for vector table symbols.
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*
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* These symbols vary by STM32 family (and also within families).
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* It's up to the build system to configure the link's search path
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* properly for the target MCU.
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*/
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INCLUDE vector_symbols.inc
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/* STM32 vector table. */
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EXTERN(__stm32_vector_table)
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/* C runtime initialization function. */
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EXTERN(start_c)
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/* main entry point */
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EXTERN(main)
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/* Initial stack pointer value. */
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EXTERN(__msp_init)
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PROVIDE(__msp_init = ORIGIN(ram) + LENGTH(ram));
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/* Reset vector and chip reset entry point */
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EXTERN(__start__)
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ENTRY(__start__)
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PROVIDE(__exc_reset = __start__);
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/* Heap boundaries, for libmaple */
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EXTERN(_lm_heap_start);
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EXTERN(_lm_heap_end);
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SECTIONS
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{
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.text :
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{
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__text_start__ = .;
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/*
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* STM32 vector table. Leave this here. Yes, really.
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*/
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*(.stm32.interrupt_vector)
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/*
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* Program code and vague linking
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*/
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*(.text .text.* .gnu.linkonce.t.*)
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*(.plt)
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*(.gnu.warning)
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*(.glue_7t) *(.glue_7) *(.vfp11_veneer)
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*(.ARM.extab* .gnu.linkonce.armextab.*)
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*(.gcc_except_table)
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*(.eh_frame_hdr)
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*(.eh_frame)
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. = ALIGN(4);
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KEEP(*(.init))
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. = ALIGN(4);
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__preinit_array_start = .;
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KEEP (*(.preinit_array))
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__preinit_array_end = .;
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. = ALIGN(4);
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__init_array_start = .;
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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__init_array_end = .;
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. = ALIGN(0x4);
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KEEP (*crtbegin.o(.ctors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*crtend.o(.ctors))
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. = ALIGN(4);
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KEEP(*(.fini))
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. = ALIGN(4);
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__fini_array_start = .;
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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__fini_array_end = .;
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*crtend.o(.dtors))
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} > REGION_TEXT
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/*
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* End of text
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*/
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.text.align :
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{
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. = ALIGN(8);
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__text_end__ = .;
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} > REGION_TEXT
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/*
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* .ARM.exidx exception unwinding; mandated by ARM's C++ ABI
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*/
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__exidx_start = .;
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.ARM.exidx :
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{
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*(.ARM.exidx* .gnu.linkonce.armexidx.*)
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} > REGION_RODATA
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__exidx_end = .;
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/*
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* .data
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*/
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.data :
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{
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__data_start__ = .;
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LONG(0)
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. = ALIGN(8);
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*(.got.plt) *(.got)
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*(.data .data.* .gnu.linkonce.d.*)
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. = ALIGN(8);
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__data_end__ = .;
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} > REGION_DATA AT> REGION_RODATA
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/*
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* Read-only data
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*/
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.rodata :
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{
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*(.rodata .rodata.* .gnu.linkonce.r.*)
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/* .USER_FLASH: We allow users to allocate into Flash here */
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*(.USER_FLASH)
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/* ROM image configuration; for C startup */
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. = ALIGN(4);
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_lm_rom_img_cfgp = .;
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LONG(LOADADDR(.data));
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/*
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* Heap: Linker scripts may choose a custom heap by overriding
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* _lm_heap_start and _lm_heap_end. Otherwise, the heap is in
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* internal SRAM, beginning after .bss, and growing towards
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* the stack.
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*
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* I'm shoving these here naively; there's probably a cleaner way
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* to go about this. [mbolivar]
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*/
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_lm_heap_start = DEFINED(_lm_heap_start) ? _lm_heap_start : _end;
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_lm_heap_end = DEFINED(_lm_heap_end) ? _lm_heap_end : __msp_init;
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} > REGION_RODATA
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/*
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* .bss
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*/
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.bss :
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{
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. = ALIGN(8);
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__bss_start__ = .;
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*(.bss .bss.* .gnu.linkonce.b.*)
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*(COMMON)
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. = ALIGN (8);
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__bss_end__ = .;
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_end = __bss_end__;
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} > REGION_BSS
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/*
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* Debugging sections
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*/
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.stab 0 (NOLOAD) : { *(.stab) }
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.stabstr 0 (NOLOAD) : { *(.stabstr) }
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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 .gnu.linkonce.wi.*) }
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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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.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
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.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) }
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/DISCARD/ : { *(.note.GNU-stack) }
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}
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