148 lines
2.5 KiB
ArmAsm
148 lines
2.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/linkage.h>
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#include <asm/unwind_hints.h>
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#include <asm/nospec-branch.h>
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/*
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* Notably, the FineIBT preamble calling these will have ZF set and r10 zero.
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*
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* The very last element is in fact larger than 32 bytes, but since its the
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* last element, this does not matter,
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*
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* There are 2 #UD sites, located between 0,1-2,3 and 4,5-6,7 such that they
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* can be reached using Jcc.d8, these elements (1 and 5) have sufficiently
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* big alignment holes for this to not stagger the array.
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*/
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.pushsection .noinstr.text, "ax"
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.align 32
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SYM_CODE_START(__bhi_args)
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#ifdef CONFIG_FINEIBT_BHI
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.align 32
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SYM_INNER_LABEL(__bhi_args_0, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_1
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_1, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_1
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cmovne %r10, %rdi
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 8
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ANNOTATE_REACHABLE
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.Lud_1: ud2
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_2, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_1
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cmovne %r10, %rdi
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cmovne %r10, %rsi
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_3, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_1
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cmovne %r10, %rdi
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cmovne %r10, %rsi
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cmovne %r10, %rdx
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_4, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_2
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cmovne %r10, %rdi
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cmovne %r10, %rsi
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cmovne %r10, %rdx
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cmovne %r10, %rcx
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_5, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_2
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cmovne %r10, %rdi
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cmovne %r10, %rsi
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cmovne %r10, %rdx
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cmovne %r10, %rcx
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cmovne %r10, %r8
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 8
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ANNOTATE_REACHABLE
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.Lud_2: ud2
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_6, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_2
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cmovne %r10, %rdi
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cmovne %r10, %rsi
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cmovne %r10, %rdx
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cmovne %r10, %rcx
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cmovne %r10, %r8
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cmovne %r10, %r9
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ANNOTATE_UNRET_SAFE
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ret
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int3
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.align 32
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SYM_INNER_LABEL(__bhi_args_7, SYM_L_LOCAL)
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ANNOTATE_NOENDBR
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UNWIND_HINT_FUNC
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jne .Lud_2
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cmovne %r10, %rdi
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cmovne %r10, %rsi
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cmovne %r10, %rdx
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cmovne %r10, %rcx
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cmovne %r10, %r8
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cmovne %r10, %r9
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cmovne %r10, %rsp
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ANNOTATE_UNRET_SAFE
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ret
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int3
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#endif /* CONFIG_FINEIBT_BHI */
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.align 32
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SYM_INNER_LABEL(__bhi_args_end, SYM_L_GLOBAL)
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ANNOTATE_NOENDBR
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nop /* Work around toolchain+objtool quirk */
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SYM_CODE_END(__bhi_args)
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.popsection
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