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arch/arm/lib/sections.c
1.24 KB
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/* * Copyright 2013 Albert ARIBAUD <albert.u.boot@aribaud.net> * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ /** * These two symbols are declared in a C file so that the linker * uses R_ARM_RELATIVE relocation, rather than the R_ARM_ABS32 one * it would use if the symbols were defined in the linker file. * Using only R_ARM_RELATIVE relocation ensures that references to * the symbols are correct after as well as before relocation. * * We need a 0-byte-size type for these symbols, and the compiler * does not allow defining objects of C type 'void'. Using an empty * struct is allowed by the compiler, but causes gcc versions 4.4 and * below to complain about aliasing. Therefore we use the next best * thing: zero-sized arrays, which are both 0-byte-size and exempt from * aliasing warnings. */ |
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char __bss_start[0] __attribute__((section(".__bss_start"))); char __bss_end[0] __attribute__((section(".__bss_end"))); |
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char __image_copy_start[0] __attribute__((section(".__image_copy_start"))); char __image_copy_end[0] __attribute__((section(".__image_copy_end"))); |
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char __rel_dyn_start[0] __attribute__((section(".__rel_dyn_start"))); char __rel_dyn_end[0] __attribute__((section(".__rel_dyn_end"))); |
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char _end[0] __attribute__((section(".__end"))); |