1621fde1f4
The C runtime wasn't initialized correctly (there was garbage in the data and bss sections). Add a reset_handler which initializes these sections before calling the application's main() function. The initial stack pointer is also defined in the linker script, allowing the application to override with a linker command line option "-Wl,--defsym,_stack=0x20005000". Thanks to Gareth McMullin <gareth@blacksphere.co.nz>.
58 lines
1.4 KiB
Plaintext
58 lines
1.4 KiB
Plaintext
/*
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* This file is part of the libopenstm32 project.
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*
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* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* Generic linker script for STM32 targets using libopenstm32. */
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/* Memory regions must be defined in the ld script which includes this one. */
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/* Enforce emmition of the vector table */
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EXTERN (vector_table)
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/* Define sections. */
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SECTIONS
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{
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. = ORIGIN(rom);
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.text : {
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*(.vectors) /* Vector table */
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*(.text) /* Program code */
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*(.rodata) /* Read-only data */
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_etext = .;
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} >rom
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. = ORIGIN(ram);
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.data : {
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_data = .;
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*(.data) /* Read-write initialized data */
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_edata = .;
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} >ram AT >rom
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.bss : {
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*(.bss) /* Read-write zero initialized data */
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*(COMMON)
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_ebss = .;
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} >ram AT >rom
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end = .;
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}
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PROVIDE(_stack = 0x20000800);
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