| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
| */ |
| #ifndef _ASM_INST_H |
| #define _ASM_INST_H |
| |
| #include <linux/types.h> |
| #include <asm/asm.h> |
| |
| #define INSN_BREAK 0x002a0000 |
| |
| #define ADDR_IMMMASK_LU52ID 0xFFF0000000000000 |
| #define ADDR_IMMMASK_LU32ID 0x000FFFFF00000000 |
| #define ADDR_IMMMASK_ADDU16ID 0x00000000FFFF0000 |
| |
| #define ADDR_IMMSHIFT_LU52ID 52 |
| #define ADDR_IMMSHIFT_LU32ID 32 |
| #define ADDR_IMMSHIFT_ADDU16ID 16 |
| |
| #define ADDR_IMM(addr, INSN) ((addr & ADDR_IMMMASK_##INSN) >> ADDR_IMMSHIFT_##INSN) |
| |
| enum reg0i26_op { |
| b_op = 0x14, |
| bl_op = 0x15, |
| }; |
| |
| enum reg1i20_op { |
| lu12iw_op = 0x0a, |
| lu32id_op = 0x0b, |
| pcaddu12i_op = 0x0e, |
| pcaddu18i_op = 0x0f, |
| }; |
| |
| enum reg1i21_op { |
| beqz_op = 0x10, |
| bnez_op = 0x11, |
| }; |
| |
| enum reg2_op { |
| revb2h_op = 0x0c, |
| revb4h_op = 0x0d, |
| revb2w_op = 0x0e, |
| revbd_op = 0x0f, |
| revh2w_op = 0x10, |
| revhd_op = 0x11, |
| }; |
| |
| enum reg2i5_op { |
| slliw_op = 0x81, |
| srliw_op = 0x89, |
| sraiw_op = 0x91, |
| }; |
| |
| enum reg2i6_op { |
| sllid_op = 0x41, |
| srlid_op = 0x45, |
| sraid_op = 0x49, |
| }; |
| |
| enum reg2i12_op { |
| addiw_op = 0x0a, |
| addid_op = 0x0b, |
| lu52id_op = 0x0c, |
| andi_op = 0x0d, |
| ori_op = 0x0e, |
| xori_op = 0x0f, |
| ldb_op = 0xa0, |
| ldh_op = 0xa1, |
| ldw_op = 0xa2, |
| ldd_op = 0xa3, |
| stb_op = 0xa4, |
| sth_op = 0xa5, |
| stw_op = 0xa6, |
| std_op = 0xa7, |
| ldbu_op = 0xa8, |
| ldhu_op = 0xa9, |
| ldwu_op = 0xaa, |
| }; |
| |
| enum reg2i14_op { |
| llw_op = 0x20, |
| scw_op = 0x21, |
| lld_op = 0x22, |
| scd_op = 0x23, |
| ldptrw_op = 0x24, |
| stptrw_op = 0x25, |
| ldptrd_op = 0x26, |
| stptrd_op = 0x27, |
| }; |
| |
| enum reg2i16_op { |
| jirl_op = 0x13, |
| beq_op = 0x16, |
| bne_op = 0x17, |
| blt_op = 0x18, |
| bge_op = 0x19, |
| bltu_op = 0x1a, |
| bgeu_op = 0x1b, |
| }; |
| |
| enum reg2bstrd_op { |
| bstrinsd_op = 0x2, |
| bstrpickd_op = 0x3, |
| }; |
| |
| enum reg3_op { |
| addw_op = 0x20, |
| addd_op = 0x21, |
| subw_op = 0x22, |
| subd_op = 0x23, |
| nor_op = 0x28, |
| and_op = 0x29, |
| or_op = 0x2a, |
| xor_op = 0x2b, |
| orn_op = 0x2c, |
| andn_op = 0x2d, |
| sllw_op = 0x2e, |
| srlw_op = 0x2f, |
| sraw_op = 0x30, |
| slld_op = 0x31, |
| srld_op = 0x32, |
| srad_op = 0x33, |
| mulw_op = 0x38, |
| mulhw_op = 0x39, |
| mulhwu_op = 0x3a, |
| muld_op = 0x3b, |
| mulhd_op = 0x3c, |
| mulhdu_op = 0x3d, |
| divw_op = 0x40, |
| modw_op = 0x41, |
| divwu_op = 0x42, |
| modwu_op = 0x43, |
| divd_op = 0x44, |
| modd_op = 0x45, |
| divdu_op = 0x46, |
| moddu_op = 0x47, |
| ldxb_op = 0x7000, |
| ldxh_op = 0x7008, |
| ldxw_op = 0x7010, |
| ldxd_op = 0x7018, |
| stxb_op = 0x7020, |
| stxh_op = 0x7028, |
| stxw_op = 0x7030, |
| stxd_op = 0x7038, |
| ldxbu_op = 0x7040, |
| ldxhu_op = 0x7048, |
| ldxwu_op = 0x7050, |
| amswapw_op = 0x70c0, |
| amswapd_op = 0x70c1, |
| amaddw_op = 0x70c2, |
| amaddd_op = 0x70c3, |
| amandw_op = 0x70c4, |
| amandd_op = 0x70c5, |
| amorw_op = 0x70c6, |
| amord_op = 0x70c7, |
| amxorw_op = 0x70c8, |
| amxord_op = 0x70c9, |
| }; |
| |
| enum reg3sa2_op { |
| alslw_op = 0x02, |
| alslwu_op = 0x03, |
| alsld_op = 0x16, |
| }; |
| |
| struct reg0i26_format { |
| unsigned int immediate_h : 10; |
| unsigned int immediate_l : 16; |
| unsigned int opcode : 6; |
| }; |
| |
| struct reg1i20_format { |
| unsigned int rd : 5; |
| unsigned int immediate : 20; |
| unsigned int opcode : 7; |
| }; |
| |
| struct reg1i21_format { |
| unsigned int immediate_h : 5; |
| unsigned int rj : 5; |
| unsigned int immediate_l : 16; |
| unsigned int opcode : 6; |
| }; |
| |
| struct reg2_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int opcode : 22; |
| }; |
| |
| struct reg2i5_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int immediate : 5; |
| unsigned int opcode : 17; |
| }; |
| |
| struct reg2i6_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int immediate : 6; |
| unsigned int opcode : 16; |
| }; |
| |
| struct reg2i12_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int immediate : 12; |
| unsigned int opcode : 10; |
| }; |
| |
| struct reg2i14_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int immediate : 14; |
| unsigned int opcode : 8; |
| }; |
| |
| struct reg2i16_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int immediate : 16; |
| unsigned int opcode : 6; |
| }; |
| |
| struct reg2bstrd_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int lsbd : 6; |
| unsigned int msbd : 6; |
| unsigned int opcode : 10; |
| }; |
| |
| struct reg3_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int rk : 5; |
| unsigned int opcode : 17; |
| }; |
| |
| struct reg3sa2_format { |
| unsigned int rd : 5; |
| unsigned int rj : 5; |
| unsigned int rk : 5; |
| unsigned int immediate : 2; |
| unsigned int opcode : 15; |
| }; |
| |
| union loongarch_instruction { |
| unsigned int word; |
| struct reg0i26_format reg0i26_format; |
| struct reg1i20_format reg1i20_format; |
| struct reg1i21_format reg1i21_format; |
| struct reg2_format reg2_format; |
| struct reg2i5_format reg2i5_format; |
| struct reg2i6_format reg2i6_format; |
| struct reg2i12_format reg2i12_format; |
| struct reg2i14_format reg2i14_format; |
| struct reg2i16_format reg2i16_format; |
| struct reg2bstrd_format reg2bstrd_format; |
| struct reg3_format reg3_format; |
| struct reg3sa2_format reg3sa2_format; |
| }; |
| |
| #define LOONGARCH_INSN_SIZE sizeof(union loongarch_instruction) |
| |
| enum loongarch_gpr { |
| LOONGARCH_GPR_ZERO = 0, |
| LOONGARCH_GPR_RA = 1, |
| LOONGARCH_GPR_TP = 2, |
| LOONGARCH_GPR_SP = 3, |
| LOONGARCH_GPR_A0 = 4, /* Reused as V0 for return value */ |
| LOONGARCH_GPR_A1, /* Reused as V1 for return value */ |
| LOONGARCH_GPR_A2, |
| LOONGARCH_GPR_A3, |
| LOONGARCH_GPR_A4, |
| LOONGARCH_GPR_A5, |
| LOONGARCH_GPR_A6, |
| LOONGARCH_GPR_A7, |
| LOONGARCH_GPR_T0 = 12, |
| LOONGARCH_GPR_T1, |
| LOONGARCH_GPR_T2, |
| LOONGARCH_GPR_T3, |
| LOONGARCH_GPR_T4, |
| LOONGARCH_GPR_T5, |
| LOONGARCH_GPR_T6, |
| LOONGARCH_GPR_T7, |
| LOONGARCH_GPR_T8, |
| LOONGARCH_GPR_FP = 22, |
| LOONGARCH_GPR_S0 = 23, |
| LOONGARCH_GPR_S1, |
| LOONGARCH_GPR_S2, |
| LOONGARCH_GPR_S3, |
| LOONGARCH_GPR_S4, |
| LOONGARCH_GPR_S5, |
| LOONGARCH_GPR_S6, |
| LOONGARCH_GPR_S7, |
| LOONGARCH_GPR_S8, |
| LOONGARCH_GPR_MAX |
| }; |
| |
| #define is_imm12_negative(val) is_imm_negative(val, 12) |
| |
| static inline bool is_imm_negative(unsigned long val, unsigned int bit) |
| { |
| return val & (1UL << (bit - 1)); |
| } |
| |
| static inline bool is_branch_ins(union loongarch_instruction *ip) |
| { |
| return ip->reg1i21_format.opcode >= beqz_op && |
| ip->reg1i21_format.opcode <= bgeu_op; |
| } |
| |
| static inline bool is_ra_save_ins(union loongarch_instruction *ip) |
| { |
| /* st.d $ra, $sp, offset */ |
| return ip->reg2i12_format.opcode == std_op && |
| ip->reg2i12_format.rj == LOONGARCH_GPR_SP && |
| ip->reg2i12_format.rd == LOONGARCH_GPR_RA && |
| !is_imm12_negative(ip->reg2i12_format.immediate); |
| } |
| |
| static inline bool is_stack_alloc_ins(union loongarch_instruction *ip) |
| { |
| /* addi.d $sp, $sp, -imm */ |
| return ip->reg2i12_format.opcode == addid_op && |
| ip->reg2i12_format.rj == LOONGARCH_GPR_SP && |
| ip->reg2i12_format.rd == LOONGARCH_GPR_SP && |
| is_imm12_negative(ip->reg2i12_format.immediate); |
| } |
| |
| u32 larch_insn_gen_lu32id(enum loongarch_gpr rd, int imm); |
| u32 larch_insn_gen_lu52id(enum loongarch_gpr rd, enum loongarch_gpr rj, int imm); |
| u32 larch_insn_gen_jirl(enum loongarch_gpr rd, enum loongarch_gpr rj, unsigned long pc, unsigned long dest); |
| |
| static inline bool signed_imm_check(long val, unsigned int bit) |
| { |
| return -(1L << (bit - 1)) <= val && val < (1L << (bit - 1)); |
| } |
| |
| static inline bool unsigned_imm_check(unsigned long val, unsigned int bit) |
| { |
| return val < (1UL << bit); |
| } |
| |
| #define DEF_EMIT_REG0I26_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| int offset) \ |
| { \ |
| unsigned int immediate_l, immediate_h; \ |
| \ |
| immediate_l = offset & 0xffff; \ |
| offset >>= 16; \ |
| immediate_h = offset & 0x3ff; \ |
| \ |
| insn->reg0i26_format.opcode = OP; \ |
| insn->reg0i26_format.immediate_l = immediate_l; \ |
| insn->reg0i26_format.immediate_h = immediate_h; \ |
| } |
| |
| DEF_EMIT_REG0I26_FORMAT(b, b_op) |
| |
| #define DEF_EMIT_REG1I20_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, int imm) \ |
| { \ |
| insn->reg1i20_format.opcode = OP; \ |
| insn->reg1i20_format.immediate = imm; \ |
| insn->reg1i20_format.rd = rd; \ |
| } |
| |
| DEF_EMIT_REG1I20_FORMAT(lu12iw, lu12iw_op) |
| DEF_EMIT_REG1I20_FORMAT(lu32id, lu32id_op) |
| DEF_EMIT_REG1I20_FORMAT(pcaddu18i, pcaddu18i_op) |
| |
| #define DEF_EMIT_REG2_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj) \ |
| { \ |
| insn->reg2_format.opcode = OP; \ |
| insn->reg2_format.rd = rd; \ |
| insn->reg2_format.rj = rj; \ |
| } |
| |
| DEF_EMIT_REG2_FORMAT(revb2h, revb2h_op) |
| DEF_EMIT_REG2_FORMAT(revb2w, revb2w_op) |
| DEF_EMIT_REG2_FORMAT(revbd, revbd_op) |
| |
| #define DEF_EMIT_REG2I5_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| int imm) \ |
| { \ |
| insn->reg2i5_format.opcode = OP; \ |
| insn->reg2i5_format.immediate = imm; \ |
| insn->reg2i5_format.rd = rd; \ |
| insn->reg2i5_format.rj = rj; \ |
| } |
| |
| DEF_EMIT_REG2I5_FORMAT(slliw, slliw_op) |
| DEF_EMIT_REG2I5_FORMAT(srliw, srliw_op) |
| DEF_EMIT_REG2I5_FORMAT(sraiw, sraiw_op) |
| |
| #define DEF_EMIT_REG2I6_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| int imm) \ |
| { \ |
| insn->reg2i6_format.opcode = OP; \ |
| insn->reg2i6_format.immediate = imm; \ |
| insn->reg2i6_format.rd = rd; \ |
| insn->reg2i6_format.rj = rj; \ |
| } |
| |
| DEF_EMIT_REG2I6_FORMAT(sllid, sllid_op) |
| DEF_EMIT_REG2I6_FORMAT(srlid, srlid_op) |
| DEF_EMIT_REG2I6_FORMAT(sraid, sraid_op) |
| |
| #define DEF_EMIT_REG2I12_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| int imm) \ |
| { \ |
| insn->reg2i12_format.opcode = OP; \ |
| insn->reg2i12_format.immediate = imm; \ |
| insn->reg2i12_format.rd = rd; \ |
| insn->reg2i12_format.rj = rj; \ |
| } |
| |
| DEF_EMIT_REG2I12_FORMAT(addiw, addiw_op) |
| DEF_EMIT_REG2I12_FORMAT(addid, addid_op) |
| DEF_EMIT_REG2I12_FORMAT(lu52id, lu52id_op) |
| DEF_EMIT_REG2I12_FORMAT(andi, andi_op) |
| DEF_EMIT_REG2I12_FORMAT(ori, ori_op) |
| DEF_EMIT_REG2I12_FORMAT(xori, xori_op) |
| DEF_EMIT_REG2I12_FORMAT(ldbu, ldbu_op) |
| DEF_EMIT_REG2I12_FORMAT(ldhu, ldhu_op) |
| DEF_EMIT_REG2I12_FORMAT(ldwu, ldwu_op) |
| DEF_EMIT_REG2I12_FORMAT(ldd, ldd_op) |
| DEF_EMIT_REG2I12_FORMAT(stb, stb_op) |
| DEF_EMIT_REG2I12_FORMAT(sth, sth_op) |
| DEF_EMIT_REG2I12_FORMAT(stw, stw_op) |
| DEF_EMIT_REG2I12_FORMAT(std, std_op) |
| |
| #define DEF_EMIT_REG2I14_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| int imm) \ |
| { \ |
| insn->reg2i14_format.opcode = OP; \ |
| insn->reg2i14_format.immediate = imm; \ |
| insn->reg2i14_format.rd = rd; \ |
| insn->reg2i14_format.rj = rj; \ |
| } |
| |
| DEF_EMIT_REG2I14_FORMAT(llw, llw_op) |
| DEF_EMIT_REG2I14_FORMAT(scw, scw_op) |
| DEF_EMIT_REG2I14_FORMAT(lld, lld_op) |
| DEF_EMIT_REG2I14_FORMAT(scd, scd_op) |
| DEF_EMIT_REG2I14_FORMAT(ldptrw, ldptrw_op) |
| DEF_EMIT_REG2I14_FORMAT(stptrw, stptrw_op) |
| DEF_EMIT_REG2I14_FORMAT(ldptrd, ldptrd_op) |
| DEF_EMIT_REG2I14_FORMAT(stptrd, stptrd_op) |
| |
| #define DEF_EMIT_REG2I16_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rj, \ |
| enum loongarch_gpr rd, \ |
| int offset) \ |
| { \ |
| insn->reg2i16_format.opcode = OP; \ |
| insn->reg2i16_format.immediate = offset; \ |
| insn->reg2i16_format.rj = rj; \ |
| insn->reg2i16_format.rd = rd; \ |
| } |
| |
| DEF_EMIT_REG2I16_FORMAT(beq, beq_op) |
| DEF_EMIT_REG2I16_FORMAT(bne, bne_op) |
| DEF_EMIT_REG2I16_FORMAT(blt, blt_op) |
| DEF_EMIT_REG2I16_FORMAT(bge, bge_op) |
| DEF_EMIT_REG2I16_FORMAT(bltu, bltu_op) |
| DEF_EMIT_REG2I16_FORMAT(bgeu, bgeu_op) |
| DEF_EMIT_REG2I16_FORMAT(jirl, jirl_op) |
| |
| #define DEF_EMIT_REG2BSTRD_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| int msbd, \ |
| int lsbd) \ |
| { \ |
| insn->reg2bstrd_format.opcode = OP; \ |
| insn->reg2bstrd_format.msbd = msbd; \ |
| insn->reg2bstrd_format.lsbd = lsbd; \ |
| insn->reg2bstrd_format.rj = rj; \ |
| insn->reg2bstrd_format.rd = rd; \ |
| } |
| |
| DEF_EMIT_REG2BSTRD_FORMAT(bstrpickd, bstrpickd_op) |
| |
| #define DEF_EMIT_REG3_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| enum loongarch_gpr rk) \ |
| { \ |
| insn->reg3_format.opcode = OP; \ |
| insn->reg3_format.rd = rd; \ |
| insn->reg3_format.rj = rj; \ |
| insn->reg3_format.rk = rk; \ |
| } |
| |
| DEF_EMIT_REG3_FORMAT(addd, addd_op) |
| DEF_EMIT_REG3_FORMAT(subd, subd_op) |
| DEF_EMIT_REG3_FORMAT(muld, muld_op) |
| DEF_EMIT_REG3_FORMAT(divdu, divdu_op) |
| DEF_EMIT_REG3_FORMAT(moddu, moddu_op) |
| DEF_EMIT_REG3_FORMAT(and, and_op) |
| DEF_EMIT_REG3_FORMAT(or, or_op) |
| DEF_EMIT_REG3_FORMAT(xor, xor_op) |
| DEF_EMIT_REG3_FORMAT(sllw, sllw_op) |
| DEF_EMIT_REG3_FORMAT(slld, slld_op) |
| DEF_EMIT_REG3_FORMAT(srlw, srlw_op) |
| DEF_EMIT_REG3_FORMAT(srld, srld_op) |
| DEF_EMIT_REG3_FORMAT(sraw, sraw_op) |
| DEF_EMIT_REG3_FORMAT(srad, srad_op) |
| DEF_EMIT_REG3_FORMAT(ldxbu, ldxbu_op) |
| DEF_EMIT_REG3_FORMAT(ldxhu, ldxhu_op) |
| DEF_EMIT_REG3_FORMAT(ldxwu, ldxwu_op) |
| DEF_EMIT_REG3_FORMAT(ldxd, ldxd_op) |
| DEF_EMIT_REG3_FORMAT(stxb, stxb_op) |
| DEF_EMIT_REG3_FORMAT(stxh, stxh_op) |
| DEF_EMIT_REG3_FORMAT(stxw, stxw_op) |
| DEF_EMIT_REG3_FORMAT(stxd, stxd_op) |
| DEF_EMIT_REG3_FORMAT(amaddw, amaddw_op) |
| DEF_EMIT_REG3_FORMAT(amaddd, amaddd_op) |
| DEF_EMIT_REG3_FORMAT(amandw, amandw_op) |
| DEF_EMIT_REG3_FORMAT(amandd, amandd_op) |
| DEF_EMIT_REG3_FORMAT(amorw, amorw_op) |
| DEF_EMIT_REG3_FORMAT(amord, amord_op) |
| DEF_EMIT_REG3_FORMAT(amxorw, amxorw_op) |
| DEF_EMIT_REG3_FORMAT(amxord, amxord_op) |
| DEF_EMIT_REG3_FORMAT(amswapw, amswapw_op) |
| DEF_EMIT_REG3_FORMAT(amswapd, amswapd_op) |
| |
| #define DEF_EMIT_REG3SA2_FORMAT(NAME, OP) \ |
| static inline void emit_##NAME(union loongarch_instruction *insn, \ |
| enum loongarch_gpr rd, \ |
| enum loongarch_gpr rj, \ |
| enum loongarch_gpr rk, \ |
| int imm) \ |
| { \ |
| insn->reg3sa2_format.opcode = OP; \ |
| insn->reg3sa2_format.immediate = imm; \ |
| insn->reg3sa2_format.rd = rd; \ |
| insn->reg3sa2_format.rj = rj; \ |
| insn->reg3sa2_format.rk = rk; \ |
| } |
| |
| DEF_EMIT_REG3SA2_FORMAT(alsld, alsld_op) |
| |
| #endif /* _ASM_INST_H */ |
