lib/bpf/gen_loader.c

96 static void emit(struct bpf_gen *gen, struct bpf_insn insn)
104 static void emit2(struct bpf_gen *gen, struct bpf_insn insn1, struct bpf_insn insn2)
672 	/* try to copy from existing bpf_insn */
674 		move_blob2blob(gen, insn + offsetof(struct bpf_insn, imm), 4,
675 			       kdesc->insn + offsetof(struct bpf_insn, imm));
676 		move_blob2blob(gen, insn + offsetof(struct bpf_insn, off), 2,
677 			       kdesc->insn + offsetof(struct bpf_insn, off));
697 	emit(gen, BPF_ST_MEM(BPF_W, BPF_REG_8, offsetof(struct bpf_insn, imm), 0));
698 	emit(gen, BPF_ST_MEM(BPF_H, BPF_REG_8, offsetof(struct bpf_insn, off), 0));
702 	emit(gen, BPF_STX_MEM(BPF_W, BPF_REG_8, BPF_REG_7, offsetof(struct bpf_insn, imm)));
714 	emit(gen, BPF_ST_MEM(BPF_H, BPF_REG_8, offsetof(struct bpf_insn, off), 0));
718 	emit(gen, BPF_ST_MEM(BPF_H, BPF_REG_8, offsetof(struct bpf_insn, off), btf_fd_idx));
723 			      offsetof(struct bpf_insn, imm)));
725 			      offsetof(struct bpf_insn, off)));
741 			      offsetof(struct bpf_insn, imm)));
742 	emit(gen, BPF_LDX_MEM(BPF_H, BPF_REG_9, BPF_REG_8, sizeof(struct bpf_insn) +
743 			      offsetof(struct bpf_insn, imm)));
746 	emit(gen, BPF_LDX_MEM(BPF_B, BPF_REG_9, BPF_REG_8, offsetofend(struct bpf_insn, code)));
764 		move_blob2blob(gen, insn + offsetof(struct bpf_insn, imm), 4,
765 			       kdesc->insn + offsetof(struct bpf_insn, imm));
766 		move_blob2blob(gen, insn + sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm), 4,
767 			       kdesc->insn + sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm));
778 	emit(gen, BPF_STX_MEM(BPF_W, BPF_REG_8, BPF_REG_9, offsetof(struct bpf_insn, imm)));
782 		      sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm)));
811 		move_blob2blob(gen, insn + sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm), 4,
812 			       kdesc->insn + sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm));
813 		move_blob2blob(gen, insn + offsetof(struct bpf_insn, imm), 4,
814 			       kdesc->insn + offsetof(struct bpf_insn, imm));
829 	emit(gen, BPF_ST_MEM(BPF_W, BPF_REG_8, offsetof(struct bpf_insn, imm), 0));
830 	emit(gen, BPF_ST_MEM(BPF_W, BPF_REG_8, sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm), 0));
834 	emit(gen, BPF_STX_MEM(BPF_W, BPF_REG_8, BPF_REG_7, offsetof(struct bpf_insn, imm)));
838 			      sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm)));
844 	emit(gen, BPF_LDX_MEM(BPF_B, BPF_REG_9, BPF_REG_8, offsetofend(struct bpf_insn, code)));
846 	emit(gen, BPF_STX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, offsetofend(struct bpf_insn, code)));
873 	insn = insns + sizeof(struct bpf_insn) * relo->insn_idx;
913 			insn += sizeof(struct bpf_insn) + offsetof(struct bpf_insn, imm);
936 			const char *license, struct bpf_insn *insns, size_t insn_cnt,
949 	insns_off = add_data(gen, insns, insn_cnt * sizeof(struct bpf_insn));