| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (C) 2023 SUSE LLC */ |
| #include <linux/bpf.h> |
| #include <bpf/bpf_helpers.h> |
| #include "bpf_misc.h" |
| |
| SEC("?raw_tp") |
| __success __log_level(2) |
| __msg("mark_precise: frame0: regs=r2 stack= before 3: (bf) r1 = r10") |
| __msg("mark_precise: frame0: regs=r2 stack= before 2: (55) if r2 != 0xfffffff8 goto pc+2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 1: (87) r2 = -r2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 0: (b7) r2 = 8") |
| __naked int bpf_neg(void) |
| { |
| asm volatile ( |
| "r2 = 8;" |
| "r2 = -r2;" |
| "if r2 != -8 goto 1f;" |
| "r1 = r10;" |
| "r1 += r2;" |
| "1:" |
| "r0 = 0;" |
| "exit;" |
| ::: __clobber_all); |
| } |
| |
| SEC("?raw_tp") |
| __success __log_level(2) |
| __msg("mark_precise: frame0: regs=r2 stack= before 3: (bf) r1 = r10") |
| __msg("mark_precise: frame0: regs=r2 stack= before 2: (55) if r2 != 0x0 goto pc+2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 1: (d4) r2 = le16 r2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 0: (b7) r2 = 0") |
| __naked int bpf_end_to_le(void) |
| { |
| asm volatile ( |
| "r2 = 0;" |
| "r2 = le16 r2;" |
| "if r2 != 0 goto 1f;" |
| "r1 = r10;" |
| "r1 += r2;" |
| "1:" |
| "r0 = 0;" |
| "exit;" |
| ::: __clobber_all); |
| } |
| |
| |
| SEC("?raw_tp") |
| __success __log_level(2) |
| __msg("mark_precise: frame0: regs=r2 stack= before 3: (bf) r1 = r10") |
| __msg("mark_precise: frame0: regs=r2 stack= before 2: (55) if r2 != 0x0 goto pc+2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 1: (dc) r2 = be16 r2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 0: (b7) r2 = 0") |
| __naked int bpf_end_to_be(void) |
| { |
| asm volatile ( |
| "r2 = 0;" |
| "r2 = be16 r2;" |
| "if r2 != 0 goto 1f;" |
| "r1 = r10;" |
| "r1 += r2;" |
| "1:" |
| "r0 = 0;" |
| "exit;" |
| ::: __clobber_all); |
| } |
| |
| #if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ |
| (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \ |
| defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390)) && \ |
| __clang_major__ >= 18 |
| |
| SEC("?raw_tp") |
| __success __log_level(2) |
| __msg("mark_precise: frame0: regs=r2 stack= before 3: (bf) r1 = r10") |
| __msg("mark_precise: frame0: regs=r2 stack= before 2: (55) if r2 != 0x0 goto pc+2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 1: (d7) r2 = bswap16 r2") |
| __msg("mark_precise: frame0: regs=r2 stack= before 0: (b7) r2 = 0") |
| __naked int bpf_end_bswap(void) |
| { |
| asm volatile ( |
| "r2 = 0;" |
| "r2 = bswap16 r2;" |
| "if r2 != 0 goto 1f;" |
| "r1 = r10;" |
| "r1 += r2;" |
| "1:" |
| "r0 = 0;" |
| "exit;" |
| ::: __clobber_all); |
| } |
| |
| #endif /* v4 instruction */ |