mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-05-14 19:53:03 +00:00
148 lines
2.5 KiB
ArmAsm
148 lines
2.5 KiB
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm/unwind_hints.h>
|
||
|
|
#include <asm/nospec-branch.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Notably, the FineIBT preamble calling these will have ZF set and r10 zero.
|
||
|
|
*
|
||
|
|
* The very last element is in fact larger than 32 bytes, but since its the
|
||
|
|
* last element, this does not matter,
|
||
|
|
*
|
||
|
|
* There are 2 #UD sites, located between 0,1-2,3 and 4,5-6,7 such that they
|
||
|
|
* can be reached using Jcc.d8, these elements (1 and 5) have sufficiently
|
||
|
|
* big alignment holes for this to not stagger the array.
|
||
|
|
*/
|
||
|
|
|
||
|
|
.pushsection .noinstr.text, "ax"
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_CODE_START(__bhi_args)
|
||
|
|
|
||
|
|
#ifdef CONFIG_FINEIBT_BHI
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_0, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_1
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_1, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_1
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 8
|
||
|
|
ANNOTATE_REACHABLE
|
||
|
|
.Lud_1: ud2
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_2, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_1
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
cmovne %r10, %rsi
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_3, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_1
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
cmovne %r10, %rsi
|
||
|
|
cmovne %r10, %rdx
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_4, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_2
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
cmovne %r10, %rsi
|
||
|
|
cmovne %r10, %rdx
|
||
|
|
cmovne %r10, %rcx
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_5, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_2
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
cmovne %r10, %rsi
|
||
|
|
cmovne %r10, %rdx
|
||
|
|
cmovne %r10, %rcx
|
||
|
|
cmovne %r10, %r8
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 8
|
||
|
|
ANNOTATE_REACHABLE
|
||
|
|
.Lud_2: ud2
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_6, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_2
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
cmovne %r10, %rsi
|
||
|
|
cmovne %r10, %rdx
|
||
|
|
cmovne %r10, %rcx
|
||
|
|
cmovne %r10, %r8
|
||
|
|
cmovne %r10, %r9
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_7, SYM_L_LOCAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
UNWIND_HINT_FUNC
|
||
|
|
jne .Lud_2
|
||
|
|
cmovne %r10, %rdi
|
||
|
|
cmovne %r10, %rsi
|
||
|
|
cmovne %r10, %rdx
|
||
|
|
cmovne %r10, %rcx
|
||
|
|
cmovne %r10, %r8
|
||
|
|
cmovne %r10, %r9
|
||
|
|
cmovne %r10, %rsp
|
||
|
|
ANNOTATE_UNRET_SAFE
|
||
|
|
ret
|
||
|
|
int3
|
||
|
|
|
||
|
|
#endif /* CONFIG_FINEIBT_BHI */
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
SYM_INNER_LABEL(__bhi_args_end, SYM_L_GLOBAL)
|
||
|
|
ANNOTATE_NOENDBR
|
||
|
|
nop /* Work around toolchain+objtool quirk */
|
||
|
|
SYM_CODE_END(__bhi_args)
|
||
|
|
|
||
|
|
.popsection
|