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Diffstat (limited to 'libopencm3/ld/linker.ld.S')
| -rw-r--r-- | libopencm3/ld/linker.ld.S | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/libopencm3/ld/linker.ld.S b/libopencm3/ld/linker.ld.S new file mode 100644 index 0000000..e81ccc0 --- /dev/null +++ b/libopencm3/ld/linker.ld.S @@ -0,0 +1,193 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> + * Copyright (C) 2013 Frantisek Burian <BuFran@seznam.cz> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Generic linker script for all targets using libopencm3. */ + +/* Enforce emmition of the vector table. */ +EXTERN(vector_table) + +/* Define the entry point of the output file. */ +ENTRY(reset_handler) + +/* Define memory regions. */ +MEMORY +{ + /* RAM is always used */ + ram (rwx) : ORIGIN = _RAM_OFF, LENGTH = _RAM + +#if defined(_ROM) + rom (rx) : ORIGIN = _ROM_OFF, LENGTH = _ROM +#endif +#if defined(_ROM1) + rom1 (rx) : ORIGIN = _ROM1_OFF, LENGTH = _ROM1 +#endif +#if defined(_ROM2) + rom2 (rx) : ORIGIN = _ROM2_OFF, LENGTH = _ROM2 +#endif +#if defined(_RAM1) + ram1 (rwx) : ORIGIN = _RAM1_OFF, LENGTH = _RAM1 +#endif +#if defined(_RAM2) + ram2 (rwx) : ORIGIN = _RAM2_OFF, LENGTH = _RAM2 +#endif +#if defined(_CCM) + ccm (rwx) : ORIGIN = _CCM_OFF, LENGTH = _CCM +#endif +#if defined(_EEP) + eep (r) : ORIGIN = _EEP_OFF, LENGTH = _EEP +#endif +#if defined(_XSRAM) + xsram (rw) : ORIGIN = _XSRAM_OFF, LENGTH = _XSRAM +#endif +#if defined(_XDRAM) + xdram (rw) : ORIGIN = _XDRAM_OFF, LENGTH = _XDRAM +#endif +#if defined(_NFCRAM) + nfcram (rw) : ORIGIN _NFCRAM_OFF, LENGTH = _NFCRAM +#endif +} + +/* Define sections. */ +SECTIONS +{ + .text : { + *(.vectors) /* Vector table */ + *(.text*) /* Program code */ + . = ALIGN(4); + *(.rodata*) /* Read-only data */ + . = ALIGN(4); + } >rom + + /* C++ Static constructors/destructors, also used for + * __attribute__((constructor)) and the likes. + */ + .preinit_array : { + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + } >rom + .init_array : { + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + } >rom + .fini_array : { + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + } >rom + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support + */ + .ARM.extab : { + *(.ARM.extab*) + } >rom + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } >rom + + . = ALIGN(4); + _etext = .; + + .data : { + _data = .; + *(.data*) /* Read-write initialized data */ + . = ALIGN(4); + _edata = .; + } >ram AT >rom + _data_loadaddr = LOADADDR(.data); + + .bss : { + *(.bss*) /* Read-write zero initialized data */ + *(COMMON) + . = ALIGN(4); + _ebss = .; + } >ram + +#if defined(_EEP) + .eep : { + *(.eeprom*) + . = ALIGN(4); + } >eep +#endif + +#if defined(_CCM) + .ccm : { + *(.ccmram*) + . = ALIGN(4); + } >ccm +#endif + +#if defined(_RAM1) + .ram1 : { + *(.ram1*) + . = ALIGN(4); + } >ram1 +#endif + +#if defined(_RAM2) + .ram2 : { + *(.ram2*) + . = ALIGN(4); + } >ram2 +#endif + +#if defined(_XSRAM) + .xsram : { + *(.xsram*) + . = ALIGN(4); + } >xsram +#endif + +#if defined(_XDRAM) + .xdram : { + *(.xdram*) + . = ALIGN(4); + } >xdram +#endif + +#if defined(_NFCRAM) + .nfcram : { + *(.nfcram*) + . = ALIGN(4); + } >nfcram +#endif + + /* + * The .eh_frame section appears to be used for C++ exception handling. + * You may need to fix this if you're using C++. + */ + /DISCARD/ : { *(.eh_frame) } + + . = ALIGN(4); + end = .; +} + +PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram)); + |