loongarch/net/bpf_jit.h

27 	struct jit_ctx ctx;
30 #define emit_insn(ctx, func, ...)						\
32 	if (ctx->image != NULL) {						\
33 		union loongarch_instruction *insn = &ctx->image[ctx->idx];	\
36 	ctx->idx++;								\
47 static inline int bpf2la_offset(int bpf_insn, int off, const struct jit_ctx *ctx)
56 	return (ctx->offset[bpf_insn + off] - (ctx->offset[bpf_insn] - 1));
59 static inline int epilogue_offset(const struct jit_ctx *ctx)
61 	int from = ctx->idx;
62 	int to = ctx->epilogue_offset;
68 static inline void emit_zext_32(struct jit_ctx *ctx, enum loongarch_gpr reg, bool is32)
73 	emit_insn(ctx, lu32id, reg, 0);
77 static inline void emit_sext_32(struct jit_ctx *ctx, enum loongarch_gpr reg, bool is32)
82 	emit_insn(ctx, addiw, reg, reg, 0);
85 static inline void move_addr(struct jit_ctx *ctx, enum loongarch_gpr rd, u64 addr)
91 	emit_insn(ctx, lu12iw, rd, imm_31_12);
95 	emit_insn(ctx, ori, rd, rd, imm_11_0);
99 	emit_insn(ctx, lu32id, rd, imm_51_32);
103 	emit_insn(ctx, lu52id, rd, rd, imm_63_52);
106 static inline void move_imm(struct jit_ctx *ctx, enum loongarch_gpr rd, long imm, bool is32)
112 		emit_insn(ctx, or, rd, LOONGARCH_GPR_ZERO, LOONGARCH_GPR_ZERO);
118 		emit_insn(ctx, addiw, rd, LOONGARCH_GPR_ZERO, imm);
124 		emit_insn(ctx, ori, rd, LOONGARCH_GPR_ZERO, imm);
132 		emit_insn(ctx, lu52id, rd, LOONGARCH_GPR_ZERO, imm_63_52);
138 	emit_insn(ctx, lu12iw, rd, imm_31_12);
143 		emit_insn(ctx, ori, rd, rd, imm_11_0);
156 				emit_insn(ctx, lu32id, rd, imm_51_32);
162 			emit_insn(ctx, lu52id, rd, rd, imm_63_52);
166 	emit_zext_32(ctx, rd, is32);
169 static inline void move_reg(struct jit_ctx *ctx, enum loongarch_gpr rd,
172 	emit_insn(ctx, or, rd, rj, LOONGARCH_GPR_ZERO);
203 static inline void cond_jmp_offset(struct jit_ctx *ctx, u8 cond, enum loongarch_gpr rj,
209 		emit_insn(ctx, beq, rj, rd, jmp_offset);
214 		emit_insn(ctx, bne, rj, rd, jmp_offset);
218 		emit_insn(ctx, bltu, rd, rj, jmp_offset);
222 		emit_insn(ctx, bltu, rj, rd, jmp_offset);
226 		emit_insn(ctx, bgeu, rj, rd, jmp_offset);
230 		emit_insn(ctx, bgeu, rd, rj, jmp_offset);
234 		emit_insn(ctx, blt, rd, rj, jmp_offset);
238 		emit_insn(ctx, blt, rj, rd, jmp_offset);
242 		emit_insn(ctx, bge, rj, rd, jmp_offset);
246 		emit_insn(ctx, bge, rd, rj, jmp_offset);
251 static inline void cond_jmp_offs26(struct jit_ctx *ctx, u8 cond, enum loongarch_gpr rj,
255 	cond_jmp_offset(ctx, cond, rj, rd, 2);
256 	emit_insn(ctx, b, jmp_offset);
259 static inline void uncond_jmp_offs26(struct jit_ctx *ctx, int jmp_offset)
261 	emit_insn(ctx, b, jmp_offset);
264 static inline int emit_cond_jmp(struct jit_ctx *ctx, u8 cond, enum loongarch_gpr rj,
279 		cond_jmp_offs26(ctx, cond, rj, rd, jmp_offset);
286 static inline int emit_uncond_jmp(struct jit_ctx *ctx, int jmp_offset)
289 		uncond_jmp_offs26(ctx, jmp_offset);
296 static inline int emit_tailcall_jmp(struct jit_ctx *ctx, u8 cond, enum loongarch_gpr rj,
300 		cond_jmp_offset(ctx, cond, rj, rd, jmp_offset);