diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/arm/lib/sections.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/arm/lib/sections.c')
| -rw-r--r-- | roms/u-boot/arch/arm/lib/sections.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/lib/sections.c b/roms/u-boot/arch/arm/lib/sections.c new file mode 100644 index 000000000..857879711 --- /dev/null +++ b/roms/u-boot/arch/arm/lib/sections.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2013 Albert ARIBAUD <albert.u.boot@aribaud.net> + */ +#include <linux/compiler.h> + +/** + * 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. + */ + +char __bss_start[0] __section(".__bss_start"); +char __bss_end[0] __section(".__bss_end"); +char __image_copy_start[0] __section(".__image_copy_start"); +char __image_copy_end[0] __section(".__image_copy_end"); +char __rel_dyn_start[0] __section(".__rel_dyn_start"); +char __rel_dyn_end[0] __section(".__rel_dyn_end"); +char __secure_start[0] __section(".__secure_start"); +char __secure_end[0] __section(".__secure_end"); +char __secure_stack_start[0] __section(".__secure_stack_start"); +char __secure_stack_end[0] __section(".__secure_stack_end"); +char __efi_runtime_start[0] __section(".__efi_runtime_start"); +char __efi_runtime_stop[0] __section(".__efi_runtime_stop"); +char __efi_runtime_rel_start[0] __section(".__efi_runtime_rel_start"); +char __efi_runtime_rel_stop[0] __section(".__efi_runtime_rel_stop"); +char _end[0] __section(".__end"); |