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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025 Meta Platforms, Inc. and affiliates. */
#include <linux/export.h>
#include <linux/linkage.h>
#include <asm/nospec-branch.h>
.code64
.section .text, "ax"
SYM_FUNC_START(arch_bpf_timed_may_goto)
ANNOTATE_NOENDBR
/*
* r10 passes us stack depth, load the pointer to count and timestamp
* into r10 by adding it to BPF frame pointer.
*/
leaq (%rbp, %r10, 1), %r10
/* Setup frame. */
pushq %rbp
movq %rsp, %rbp
/* Save r0-r5. */
pushq %rax
pushq %rdi
pushq %rsi
pushq %rdx
pushq %rcx
pushq %r8
/*
* r10 has the pointer to count and timestamp, pass it as first
* argument.
*/
movq %r10, %rdi
/* Emit call depth accounting for call below. */
CALL_DEPTH_ACCOUNT
call bpf_check_timed_may_goto
/* BPF_REG_AX=r10 will be stored into count, so move return value to it. */
movq %rax, %r10
/* Restore r5-r0. */
popq %r8
popq %rcx
popq %rdx
popq %rsi
popq %rdi
popq %rax
leave
RET
SYM_FUNC_END(arch_bpf_timed_may_goto)
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