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Changed ldscripts to use new RAM region names, placed .data/.bss/stack into separate local RAM region.

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Added ldscript for RAM-only debugging over SWD or JTAG.
This commit is contained in:
Jared Boone 2012-10-10 14:21:39 -07:00 committed by Piotr Esden-Tempski
parent ffffb71ba2
commit 18d72099a5
3 changed files with 126 additions and 10 deletions
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18
lib/lpc43xx/libopencm3_lpc43xx.ld
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@ -4,6 +4,7 @@
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
* Copyright (C) 2012 Jared Boone <jared@sharebrained.com>
*
* 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
@ -83,13 +84,14 @@ SECTIONS
_etext_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */
_etext_rom = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */
. = ORIGIN(ram_local2);
.data : {
_data = .;
*(.data*) /* Read-write initialized data */
. = ALIGN(4);
_edata = .;
} >ram AT >rom
_data_loadaddr = LOADADDR(.data);
} >ram_local2 AT >rom
.bss : {
_bss = .;
@ -97,8 +99,16 @@ SECTIONS
*(COMMON)
. = ALIGN(4);
_ebss = .;
} >ram
} >ram_local2
<<<<<<< HEAD
=======
/* exception unwind data - required due to libgcc.a issuing /0 exceptions */
.ARM.extab : {
*(.ARM.extab*)
} >ram_local2
>>>>>>> bba3412... Changed ldscripts to use new RAM region names, placed .data/.bss/stack into separate local RAM region.
/*
* The .eh_frame section appears to be used for C++ exception handling.
* You may need to fix this if you're using C++.
@ -109,6 +119,6 @@ SECTIONS
end = .;
/* Leave room above stack for IAP to run. */
__StackTop = ORIGIN(ram) + LENGTH(ram) - 32;
__StackTop = ORIGIN(ram_local2) + LENGTH(ram_local2) - 32;
PROVIDE(_stack = __StackTop);
}

100
lib/lpc43xx/libopencm3_lpc43xx_ram_only.ld Normal file
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@ -0,0 +1,100 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
* Copyright (C) 2012 Jared Boone <jared@sharebrained.com>
*
* 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 LPC43XX targets using libopencm3. */
/* Memory regions must be defined in the ld script which includes this one. */
/* Enforce emmition of the vector table. */
EXTERN (vector_table)
/* Define the entry point of the output file. */
ENTRY(reset_handler)
/* Define sections. */
SECTIONS
{
. = ORIGIN(ram_local1);
.text : {
. = ALIGN(0x400);
_text_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */
*(.vectors) /* Vector table */
*(.text*) /* Program code */
. = ALIGN(4);
*(.rodata*) /* Read-only data */
. = ALIGN(4);
} >ram_local1
/* exception index - required due to libgcc.a issuing /0 exceptions */
__exidx_start = .;
.ARM.exidx : {
*(.ARM.exidx*)
} > ram_local1
__exidx_end = .;
_etext = .;
_etext_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */
_etext_rom = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */
. = ORIGIN(ram_local2);
.data : {
*(.data*) /* Read-write initialized data */
. = ALIGN(4);
} >ram_local2
/* Running from RAM only, loading the .elf will initialize data for us. */
_data = .;
_edata = .;
.bss : {
_bss = .;
*(.bss*) /* Read-write zero initialized data */
*(COMMON)
. = ALIGN(4);
_ebss = .;
} >ram_local2
/* exception unwind data - required due to libgcc.a issuing /0 exceptions */
.ARM.extab : {
*(.ARM.extab*)
} >ram_local2
/*
* 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) }
/*
* Another section used by C++ stuff, appears when using newlib with
* 64bit (long long) printf support - discard it for now.
*/
/DISCARD/ : { *(.ARM.exidx) }
end = .;
/* Leave room above stack for IAP to run. */
__StackTop = ORIGIN(ram_local2) + LENGTH(ram_local2) - 32;
PROVIDE(_stack = __StackTop);
}

18
lib/lpc43xx/libopencm3_lpc43xx_rom_to_ram.ld
View File

@ -4,6 +4,7 @@
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
* Copyright (C) 2012 Jared Boone <jared@sharebrained.com>
*
* 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
@ -34,7 +35,7 @@ SECTIONS
{
.text : {
. = ALIGN(0x400);
_text_ram = (. - ORIGIN(rom)) + ORIGIN(ram); /* Start of Code in RAM */
_text_ram = (. - ORIGIN(rom)) + ORIGIN(ram_local1); /* Start of Code in RAM */
*(.vectors) /* Vector table */
*(.text*) /* Program code */
@ -81,7 +82,7 @@ SECTIONS
. = ALIGN(4);
_etext = .;
_etext_ram = (. - ORIGIN(rom)) + ORIGIN(ram);
_etext_ram = (. - ORIGIN(rom)) + ORIGIN(ram_local1);
_etext_rom = (. - ORIGIN(rom)) + ORIGIN(rom_flash);
.data : {
@ -89,8 +90,7 @@ SECTIONS
*(.data*) /* Read-write initialized data */
. = ALIGN(4);
_edata = .;
} >ram_data AT >rom
_data_loadaddr = LOADADDR(.data);
} >ram_local2 AT >rom
.bss : {
. = _edata;
@ -99,7 +99,13 @@ SECTIONS
*(COMMON)
. = ALIGN(4);
_ebss = .;
} >ram_data
} >ram_local2
/* exception unwind data - required due to libgcc.a issuing /0 exceptions */
.ARM.extab : {
. = _ebss;
*(.ARM.extab*)
} >ram_local2
/*
* The .eh_frame section appears to be used for C++ exception handling.
@ -111,6 +117,6 @@ SECTIONS
end = .;
/* Leave room above stack for IAP to run. */
__StackTop = ORIGIN(ram) + LENGTH(ram) - 32;
__StackTop = ORIGIN(ram_local2) + LENGTH(ram_local2) - 32;
PROVIDE(_stack = __StackTop);
}