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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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214fad5507
This module tests the module loader's ELF relocation processing
routines. When loaded, it logs output like below.
Relocation test:
-------------------------------------------------------
R_AARCH64_ABS64 0xffff880000cccccc pass
R_AARCH64_ABS32 0x00000000f800cccc pass
R_AARCH64_ABS16 0x000000000000f8cc pass
R_AARCH64_MOVW_SABS_Gn 0xffff880000cccccc pass
R_AARCH64_MOVW_UABS_Gn 0xffff880000cccccc pass
R_AARCH64_ADR_PREL_LO21 0xffffff9cf4d1a400 pass
R_AARCH64_PREL64 0xffffff9cf4d1a400 pass
R_AARCH64_PREL32 0xffffff9cf4d1a400 pass
R_AARCH64_PREL16 0xffffff9cf4d1a400 pass
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
83 lines
1.4 KiB
ArmAsm
83 lines
1.4 KiB
ArmAsm
/*
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* Copyright (C) 2017 Linaro, Ltd. <ard.biesheuvel@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/linkage.h>
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ENTRY(absolute_data64)
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ldr x0, 0f
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ret
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0: .quad sym64_abs
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ENDPROC(absolute_data64)
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ENTRY(absolute_data32)
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ldr w0, 0f
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ret
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0: .long sym32_abs
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ENDPROC(absolute_data32)
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ENTRY(absolute_data16)
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adr x0, 0f
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ldrh w0, [x0]
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ret
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0: .short sym16_abs, 0
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ENDPROC(absolute_data16)
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ENTRY(signed_movw)
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movz x0, #:abs_g2_s:sym64_abs
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movk x0, #:abs_g1_nc:sym64_abs
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movk x0, #:abs_g0_nc:sym64_abs
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ret
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ENDPROC(signed_movw)
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ENTRY(unsigned_movw)
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movz x0, #:abs_g3:sym64_abs
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movk x0, #:abs_g2_nc:sym64_abs
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movk x0, #:abs_g1_nc:sym64_abs
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movk x0, #:abs_g0_nc:sym64_abs
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ret
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ENDPROC(unsigned_movw)
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#ifndef CONFIG_ARM64_ERRATUM_843419
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ENTRY(relative_adrp)
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adrp x0, sym64_rel
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add x0, x0, #:lo12:sym64_rel
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ret
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ENDPROC(relative_adrp)
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#endif
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ENTRY(relative_adr)
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adr x0, sym64_rel
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ret
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ENDPROC(relative_adr)
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ENTRY(relative_data64)
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adr x1, 0f
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ldr x0, [x1]
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add x0, x0, x1
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ret
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0: .quad sym64_rel - .
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ENDPROC(relative_data64)
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ENTRY(relative_data32)
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adr x1, 0f
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ldr w0, [x1]
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add x0, x0, x1
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ret
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0: .long sym64_rel - .
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ENDPROC(relative_data32)
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ENTRY(relative_data16)
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adr x1, 0f
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ldrsh w0, [x1]
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add x0, x0, x1
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ret
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0: .short sym64_rel - ., 0
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ENDPROC(relative_data16)
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