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https://github.com/u-boot/u-boot.git
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c1eb7a993d
commit6e2228fb05("Merge patch series "Clean up arm linker scripts") was cleaning up linker scripts for armv7 and v8 but was leaving _end and __secure_stack_start/end. commitd0b5d9da5d("arm: make _end compiler-generated") was moving _end to be compiler generated. _end is defined as c variable in its own section to force the compiler emit relative a reference. However, defining those in the linker script will do the same thing since [0]. So let's remove the special sections from the linker scripts, the variable definitions from sections.c and define them as a symbols. It's worth noting that _image_binary_end symbol is now redundant and can be removed in the future. - SPL The .end section has been removed from the new binary [ 5] .end PROGBITS 00000000fffdf488 000000000002f488 0 0000000000000000 0000000000000000 0 1 [0000000000000003]: WRITE, ALLOC $~ bloat-o-meter kria_old/spl/u-boot-spl krina_new/spl/u-boot-spl add/remove: 0/0 grow/shrink: 0/0 up/down: 0/0 (0) Function old new delta Total: Before=115980, After=115980, chg +0.00% $~ readelf -sW kria_old/u-boot kria_new/u-boot | grep -w _end 12047: 000000000813a0f0 0 OBJECT GLOBAL DEFAULT 11 _end 12047: 000000000813a118 0 NOTYPE GLOBAL DEFAULT 11 _end $~ readelf -sW kria_old/spl/u-boot-spl kria_new/spl/u-boot-spl | grep -w _end 1605: 00000000fffdf488 0 OBJECT GLOBAL DEFAULT 5 _end 1603: 00000000fffdf498 0 NOTYPE GLOBAL DEFAULT 4 _end $~ readelf -sW old/u-boot new/u-boot | grep -w _end 8847: 0000000000103710 0 OBJECT GLOBAL DEFAULT 11 _end 8847: 0000000000103738 0 NOTYPE GLOBAL DEFAULT 11 _end $~ readelf -sW old_v7/u-boot new_v7/u-boot | grep -w _end 10638: 000da824 0 OBJECT GLOBAL DEFAULT 10 _end 10637: 000da84c 0 NOTYPE GLOBAL DEFAULT 10 _end - For both QEMU instances $~ bloat-o-meter old/u-boot new/u-boot add/remove: 0/0 grow/shrink: 1/0 up/down: 20/0 (20) Function old new delta version_string 50 70 +20 Total: Before=656915, After=656935, chg +0.00% [0] binutils commit 6b3b0ab89663 ("Make linker assigned symbol dynamic only for shared object") Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
90 lines
1.7 KiB
Text
90 lines
1.7 KiB
Text
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2004-2008 Texas Instruments
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*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*/
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OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
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OUTPUT_ARCH(arm)
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ENTRY(_start)
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SECTIONS
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{
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. = 0x00000000;
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. = ALIGN(4);
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__image_copy_start = ADDR(.text);
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.text :
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{
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*(.vectors)
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CPUDIR/start.o (.text*)
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*(.text*)
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*(.glue*)
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}
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. = ALIGN(4);
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.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
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. = ALIGN(4);
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.data : {
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*(.data*)
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}
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. = ALIGN(4);
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__u_boot_list : {
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KEEP(*(SORT(__u_boot_list*)));
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}
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. = ALIGN(4);
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.binman_sym_table : {
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__binman_sym_start = .;
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KEEP(*(SORT(.binman_sym*)));
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__binman_sym_end = .;
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}
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. = ALIGN(4);
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__image_copy_end = .;
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.rel.dyn : {
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__rel_dyn_start = .;
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*(.rel*)
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__rel_dyn_end = .;
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}
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_image_binary_end = .;
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_end = .;
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.bss __rel_dyn_start (OVERLAY) : {
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__bss_start = .;
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*(.bss*)
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. = ALIGN(4);
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__bss_end = .;
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}
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__bss_size = __bss_end - __bss_start;
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.dynsym _image_binary_end : { *(.dynsym) }
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.dynbss : { *(.dynbss) }
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.dynstr : { *(.dynstr*) }
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.dynamic : { *(.dynamic*) }
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.hash : { *(.hash*) }
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.plt : { *(.plt*) }
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.interp : { *(.interp*) }
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.gnu : { *(.gnu*) }
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.ARM.exidx : { *(.ARM.exidx*) }
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}
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#if defined(IMAGE_MAX_SIZE)
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ASSERT(__image_copy_end - __image_copy_start <= (IMAGE_MAX_SIZE), \
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"SPL image too big");
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#endif
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#if defined(CONFIG_SPL_BSS_MAX_SIZE)
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ASSERT(__bss_end - __bss_start <= (CONFIG_SPL_BSS_MAX_SIZE), \
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"SPL image BSS too big");
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#endif
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#if defined(CONFIG_SPL_MAX_FOOTPRINT)
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ASSERT(__bss_end - _start <= (CONFIG_SPL_MAX_FOOTPRINT), \
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"SPL image plus BSS too big");
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#endif
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