mirror of
https://github.com/Fishwaldo/linux-bl808.git
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c035407743
IMUL allows for multiple operands and saving and storing rax/rdx is no longer needed. Signedness of the operands doesn't matter here because the we only keep the lower 32/64 bit of the product for 32/64 bit multiplications. Signed-off-by: Jie Meng <jmeng@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210913211337.1564014-1-jmeng@fb.com
147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
{
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"jit: lsh, rsh, arsh by 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_MOV64_IMM(BPF_REG_1, 0xff),
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BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 1),
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BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 1),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x3fc, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_IMM(BPF_RSH, BPF_REG_1, 1),
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BPF_ALU32_IMM(BPF_RSH, BPF_REG_1, 1),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0xff, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_IMM(BPF_ARSH, BPF_REG_1, 1),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x7f, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_IMM(BPF_REG_0, 2),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 2,
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},
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{
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"jit: mov32 for ldimm64, 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 2),
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BPF_LD_IMM64(BPF_REG_1, 0xfeffffffffffffffULL),
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BPF_ALU64_IMM(BPF_RSH, BPF_REG_1, 32),
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BPF_LD_IMM64(BPF_REG_2, 0xfeffffffULL),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 2,
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},
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{
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"jit: mov32 for ldimm64, 2",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_LD_IMM64(BPF_REG_1, 0x1ffffffffULL),
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BPF_LD_IMM64(BPF_REG_2, 0xffffffffULL),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
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BPF_MOV64_IMM(BPF_REG_0, 2),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 2,
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},
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{
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"jit: various mul tests",
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.insns = {
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BPF_LD_IMM64(BPF_REG_2, 0xeeff0d413122ULL),
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BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
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BPF_LD_IMM64(BPF_REG_1, 0xefefefULL),
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BPF_ALU64_REG(BPF_MUL, BPF_REG_0, BPF_REG_1),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
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BPF_ALU64_REG(BPF_MUL, BPF_REG_3, BPF_REG_1),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
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BPF_ALU64_IMM(BPF_MUL, BPF_REG_3, 0xefefef),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV32_REG(BPF_REG_2, BPF_REG_2),
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BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
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BPF_ALU32_REG(BPF_MUL, BPF_REG_0, BPF_REG_1),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
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BPF_ALU32_REG(BPF_MUL, BPF_REG_3, BPF_REG_1),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
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BPF_ALU32_IMM(BPF_MUL, BPF_REG_3, 0xefefef),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
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BPF_LD_IMM64(BPF_REG_2, 0x2ad4d4aaULL),
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BPF_ALU32_IMM(BPF_MUL, BPF_REG_0, 0x2b),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_LD_IMM64(BPF_REG_0, 0x952a7bbcULL),
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BPF_LD_IMM64(BPF_REG_1, 0xfefefeULL),
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BPF_LD_IMM64(BPF_REG_5, 0xeeff0d413122ULL),
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BPF_ALU32_REG(BPF_MUL, BPF_REG_5, BPF_REG_1),
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BPF_JMP_REG(BPF_JEQ, BPF_REG_5, BPF_REG_0, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_IMM(BPF_REG_0, 2),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 2,
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},
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{
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"jit: jsgt, jslt",
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.insns = {
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BPF_LD_IMM64(BPF_REG_1, 0x80000000ULL),
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BPF_LD_IMM64(BPF_REG_2, 0x0ULL),
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BPF_JMP_REG(BPF_JSGT, BPF_REG_1, BPF_REG_2, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_JMP_REG(BPF_JSLT, BPF_REG_2, BPF_REG_1, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_IMM(BPF_REG_0, 2),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 2,
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},
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{
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"jit: torturous jumps, imm8 nop jmp and pure jump padding",
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.insns = { },
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.fill_helper = bpf_fill_torturous_jumps,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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.result = ACCEPT,
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.retval = 1,
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},
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{
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"jit: torturous jumps, imm32 nop jmp and jmp_cond padding",
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.insns = { },
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.fill_helper = bpf_fill_torturous_jumps,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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.result = ACCEPT,
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.retval = 2,
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},
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{
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"jit: torturous jumps in subprog",
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.insns = { },
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.fill_helper = bpf_fill_torturous_jumps,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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.result = ACCEPT,
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.retval = 3,
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},
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