From 1fd366764d17874b8211ef63d41313995833e36d Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Fri, 14 Jul 2023 11:17:59 -0500 Subject: The start-ish of it all. --- controller/ld/TM4C123GH6PM.ld | 72 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 controller/ld/TM4C123GH6PM.ld (limited to 'controller/ld/TM4C123GH6PM.ld') diff --git a/controller/ld/TM4C123GH6PM.ld b/controller/ld/TM4C123GH6PM.ld new file mode 100644 index 0000000..29ff8d8 --- /dev/null +++ b/controller/ld/TM4C123GH6PM.ld @@ -0,0 +1,72 @@ +/* +* Copyright (c) 2018, Shawn D'silva +* All rights reserved. +* +* This file 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 file 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 . +* +* File: TM4C123GH6PHM.ld +* Author: Shawn D'silva . +* Version: 1.0.0. +* Description: linker file for the TM4C Launchpad +*/ + +MEMORY +{ + FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 256K /* FLASH size 256KB */ + RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 32K/* RAM size 32KB */ + +} + +SECTIONS +{ + + + /* + * initial stack pointer pointing to top of stack,starts from higher addresses + * i.e ORIGIN(RAM) + LENGTH(RAM)-1 in this case 0x20007FFF to lower addesses i.e + * those lesser than 0x20007FFF to 0x2000000,which is the origina address of RAM, + * until it comes in contact with .bss or .data in which case a buffer overflow occurs + */ + PROVIDE( _stack_ptr = ORIGIN(RAM) + LENGTH(RAM)); + + /* constants and other code stored in FLASH */ + .text : + { + _text = .; /* beginning of .text segment,also called code memory */ + KEEP(*(.vector_table)) /* vector table defined in startup.c to be included */ + *(.text*) /* other code */ + *(.rodata*) /* constants go here */ + _etext = .; /* end of .text segment */ + } > FLASH + + /* data, initialized variables, to be copied to RAM upon by startup.c */ + .data : + { + _data = .; /* beginning of .data segment */ + *(.data*) /* data goes here */ + _edata = .; /* end of .data segment */ + } > RAM AT >FLASH /* .data segment starts directly after the .text section in FLASH */ + + /* uninitialized data which is initialized to 0 upon by startup.c */ + .bss : + { + _bss = .; /* beginning of .bss segment */ + *(.bss*) /* .bss content goes here */ + *(COMMON) + _ebss = .; /* end of .bss segment */ + } > RAM + + + +} -- cgit v1.2.3