tools/testing/selftests/bpf/progs/verifier_sdiv.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/verifier_sdiv.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/verifier_sdiv.c
Extension
.c
Size
26113 bytes
Lines
1283
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0

#include <linux/bpf.h>
#include <limits.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
	(defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
	defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
	defined(__TARGET_ARCH_loongarch)) && \
	__clang_major__ >= 18

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 1")
__success __success_unpriv __retval(-20)
__naked void sdiv32_non_zero_imm_1(void)
{
	asm volatile ("					\
	w0 = -41;					\
	w0 s/= 2;					\
	exit;						\
"	::: __clobber_all);
}

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 2")
__success __success_unpriv __retval(-20)
__naked void sdiv32_non_zero_imm_2(void)
{
	asm volatile ("					\
	w0 = 41;					\
	w0 s/= -2;					\
	exit;						\
"	::: __clobber_all);
}

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 3")
__success __success_unpriv __retval(20)
__naked void sdiv32_non_zero_imm_3(void)
{
	asm volatile ("					\
	w0 = -41;					\
	w0 s/= -2;					\
	exit;						\
"	::: __clobber_all);
}

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 4")
__success __success_unpriv __retval(-21)
__naked void sdiv32_non_zero_imm_4(void)
{
	asm volatile ("					\
	w0 = -42;					\
	w0 s/= 2;					\
	exit;						\
"	::: __clobber_all);
}

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 5")
__success __success_unpriv __retval(-21)
__naked void sdiv32_non_zero_imm_5(void)
{
	asm volatile ("					\
	w0 = 42;					\
	w0 s/= -2;					\
	exit;						\
"	::: __clobber_all);
}

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 6")
__success __success_unpriv __retval(21)
__naked void sdiv32_non_zero_imm_6(void)
{
	asm volatile ("					\
	w0 = -42;					\
	w0 s/= -2;					\
	exit;						\
"	::: __clobber_all);
}

SEC("socket")
__description("SDIV32, non-zero imm divisor, check 7")
__success __success_unpriv __retval(21)
__naked void sdiv32_non_zero_imm_7(void)
{

Annotation

Implementation Notes