tools/testing/selftests/bpf/verifier/basic_instr.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/verifier/basic_instr.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/verifier/basic_instr.c
Extension
.c
Size
4630 bytes
Lines
220
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

{
	"add+sub+mul",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_1, 1),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 2),
	BPF_MOV64_IMM(BPF_REG_2, 3),
	BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_2),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),
	BPF_ALU64_IMM(BPF_MUL, BPF_REG_1, 3),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = -3,
},
{
	"xor32 zero extend check",
	.insns = {
	BPF_MOV32_IMM(BPF_REG_2, -1),
	BPF_ALU64_IMM(BPF_LSH, BPF_REG_2, 32),
	BPF_ALU64_IMM(BPF_OR, BPF_REG_2, 0xffff),
	BPF_ALU32_REG(BPF_XOR, BPF_REG_2, BPF_REG_2),
	BPF_MOV32_IMM(BPF_REG_0, 2),
	BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0, 1),
	BPF_MOV32_IMM(BPF_REG_0, 1),
	BPF_EXIT_INSN(),
	},
	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
	.result = ACCEPT,
	.retval = 1,
},
{
	"arsh32 on imm",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 1),
	BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 5),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"arsh32 on imm 2",
	.insns = {
	BPF_LD_IMM64(BPF_REG_0, 0x1122334485667788),
	BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 7),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = -16069393,
},
{
	"arsh32 on reg",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 1),
	BPF_MOV64_IMM(BPF_REG_1, 5),
	BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"arsh32 on reg 2",
	.insns = {
	BPF_LD_IMM64(BPF_REG_0, 0xffff55667788),
	BPF_MOV64_IMM(BPF_REG_1, 15),
	BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 43724,
},
{
	"arsh64 on imm",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_ARSH, BPF_REG_0, 5),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
},
{
	"arsh64 on reg",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 1),
	BPF_MOV64_IMM(BPF_REG_1, 5),
	BPF_ALU64_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
	BPF_EXIT_INSN(),
	},

Annotation

Implementation Notes