diff options
Diffstat (limited to 'include/asm-mips/inst.h')
| -rw-r--r-- | include/asm-mips/inst.h | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/include/asm-mips/inst.h b/include/asm-mips/inst.h new file mode 100644 index 00000000000..6ad51724176 --- /dev/null +++ b/include/asm-mips/inst.h @@ -0,0 +1,371 @@ +/* + * Format of an instruction in memory. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1996, 2000 by Ralf Baechle + */ +#ifndef _ASM_INST_H +#define _ASM_INST_H + +/* + * Major opcodes; before MIPS IV cop1x was called cop3. + */ +enum major_op { + spec_op, bcond_op, j_op, jal_op, + beq_op, bne_op, blez_op, bgtz_op, + addi_op, addiu_op, slti_op, sltiu_op, + andi_op, ori_op, xori_op, lui_op, + cop0_op, cop1_op, cop2_op, cop1x_op, + beql_op, bnel_op, blezl_op, bgtzl_op, + daddi_op, daddiu_op, ldl_op, ldr_op, + major_1c_op, jalx_op, major_1e_op, major_1f_op, + lb_op, lh_op, lwl_op, lw_op, + lbu_op, lhu_op, lwr_op, lwu_op, + sb_op, sh_op, swl_op, sw_op, + sdl_op, sdr_op, swr_op, cache_op, + ll_op, lwc1_op, lwc2_op, pref_op, + lld_op, ldc1_op, ldc2_op, ld_op, + sc_op, swc1_op, swc2_op, major_3b_op, /* Opcode 0x3b is unused */ + scd_op, sdc1_op, sdc2_op, sd_op +}; + +/* + * func field of spec opcode. + */ +enum spec_op { + sll_op, movc_op, srl_op, sra_op, + sllv_op, srlv_op, srav_op, spec1_unused_op, /* Opcode 0x07 is unused */ + jr_op, jalr_op, movz_op, movn_op, + syscall_op, break_op, spim_op, sync_op, + mfhi_op, mthi_op, mflo_op, mtlo_op, + dsllv_op, spec2_unused_op, dsrlv_op, dsrav_op, + mult_op, multu_op, div_op, divu_op, + dmult_op, dmultu_op, ddiv_op, ddivu_op, + add_op, addu_op, sub_op, subu_op, + and_op, or_op, xor_op, nor_op, + spec3_unused_op, spec4_unused_op, slt_op, sltu_op, + dadd_op, daddu_op, dsub_op, dsubu_op, + tge_op, tgeu_op, tlt_op, tltu_op, + teq_op, spec5_unused_op, tne_op, spec6_unused_op, + dsll_op, spec7_unused_op, dsrl_op, dsra_op, + dsll32_op, spec8_unused_op, dsrl32_op, dsra32_op +}; + +/* + * rt field of bcond opcodes. + */ +enum rt_op { + bltz_op, bgez_op, bltzl_op, bgezl_op, + spimi_op, unused_rt_op_0x05, unused_rt_op_0x06, unused_rt_op_0x07, + tgei_op, tgeiu_op, tlti_op, tltiu_op, + teqi_op, unused_0x0d_rt_op, tnei_op, unused_0x0f_rt_op, + bltzal_op, bgezal_op, bltzall_op, bgezall_op + /* + * The others (0x14 - 0x1f) are unused. + */ +}; + +/* + * rs field of cop opcodes. + */ +enum cop_op { + mfc_op = 0x00, dmfc_op = 0x01, + cfc_op = 0x02, mtc_op = 0x04, + dmtc_op = 0x05, ctc_op = 0x06, + bc_op = 0x08, cop_op = 0x10, + copm_op = 0x18 +}; + +/* + * rt field of cop.bc_op opcodes + */ +enum bcop_op { + bcf_op, bct_op, bcfl_op, bctl_op +}; + +/* + * func field of cop0 coi opcodes. + */ +enum cop0_coi_func { + tlbr_op = 0x01, tlbwi_op = 0x02, + tlbwr_op = 0x06, tlbp_op = 0x08, + rfe_op = 0x10, eret_op = 0x18 +}; + +/* + * func field of cop0 com opcodes. + */ +enum cop0_com_func { + tlbr1_op = 0x01, tlbw_op = 0x02, + tlbp1_op = 0x08, dctr_op = 0x09, + dctw_op = 0x0a +}; + +/* + * fmt field of cop1 opcodes. + */ +enum cop1_fmt { + s_fmt, d_fmt, e_fmt, q_fmt, + w_fmt, l_fmt +}; + +/* + * func field of cop1 instructions using d, s or w format. + */ +enum cop1_sdw_func { + fadd_op = 0x00, fsub_op = 0x01, + fmul_op = 0x02, fdiv_op = 0x03, + fsqrt_op = 0x04, fabs_op = 0x05, + fmov_op = 0x06, fneg_op = 0x07, + froundl_op = 0x08, ftruncl_op = 0x09, + fceill_op = 0x0a, ffloorl_op = 0x0b, + fround_op = 0x0c, ftrunc_op = 0x0d, + fceil_op = 0x0e, ffloor_op = 0x0f, + fmovc_op = 0x11, fmovz_op = 0x12, + fmovn_op = 0x13, frecip_op = 0x15, + frsqrt_op = 0x16, fcvts_op = 0x20, + fcvtd_op = 0x21, fcvte_op = 0x22, + fcvtw_op = 0x24, fcvtl_op = 0x25, + fcmp_op = 0x30 +}; + +/* + * func field of cop1x opcodes (MIPS IV). + */ +enum cop1x_func { + lwxc1_op = 0x00, ldxc1_op = 0x01, + pfetch_op = 0x07, swxc1_op = 0x08, + sdxc1_op = 0x09, madd_s_op = 0x20, + madd_d_op = 0x21, madd_e_op = 0x22, + msub_s_op = 0x28, msub_d_op = 0x29, + msub_e_op = 0x2a, nmadd_s_op = 0x30, + nmadd_d_op = 0x31, nmadd_e_op = 0x32, + nmsub_s_op = 0x38, nmsub_d_op = 0x39, + nmsub_e_op = 0x3a +}; + +/* + * func field for mad opcodes (MIPS IV). + */ +enum mad_func { + madd_op = 0x08, msub_op = 0x0a, + nmadd_op = 0x0c, nmsub_op = 0x0e +}; + +/* + * Damn ... bitfields depend from byteorder :-( + */ +#ifdef __MIPSEB__ +struct j_format { /* Jump format */ + unsigned int opcode : 6; + unsigned int target : 26; +}; + +struct i_format { /* Immediate format (addi, lw, ...) */ + unsigned int opcode : 6; + unsigned int rs : 5; + unsigned int rt : 5; + signed int simmediate : 16; +}; + +struct u_format { /* Unsigned immediate format (ori, xori, ...) */ + unsigned int opcode : 6; + unsigned int rs : 5; + unsigned int rt : 5; + unsigned int uimmediate : 16; +}; + +struct c_format { /* Cache (>= R6000) format */ + unsigned int opcode : 6; + unsigned int rs : 5; + unsigned int c_op : 3; + unsigned int cache : 2; + unsigned int simmediate : 16; +}; + +struct r_format { /* Register format */ + unsigned int opcode : 6; + unsigned int rs : 5; + unsigned int rt : 5; + unsigned int rd : 5; + unsigned int re : 5; + unsigned int func : 6; +}; + +struct p_format { /* Performance counter format (R10000) */ + unsigned int opcode : 6; + unsigned int rs : 5; + unsigned int rt : 5; + unsigned int rd : 5; + unsigned int re : 5; + unsigned int func : 6; +}; + +struct f_format { /* FPU register format */ + unsigned int opcode : 6; + unsigned int : 1; + unsigned int fmt : 4; + unsigned int rt : 5; + unsigned int rd : 5; + unsigned int re : 5; + unsigned int func : 6; +}; + +struct ma_format { /* FPU multipy and add format (MIPS IV) */ + unsigned int opcode : 6; + unsigned int fr : 5; + unsigned int ft : 5; + unsigned int fs : 5; + unsigned int fd : 5; + unsigned int func : 4; + unsigned int fmt : 2; +}; + +#elif defined(__MIPSEL__) + +struct j_format { /* Jump format */ + unsigned int target : 26; + unsigned int opcode : 6; +}; + +struct i_format { /* Immediate format */ + signed int simmediate : 16; + unsigned int rt : 5; + unsigned int rs : 5; + unsigned int opcode : 6; +}; + +struct u_format { /* Unsigned immediate format */ + unsigned int uimmediate : 16; + unsigned int rt : 5; + unsigned int rs : 5; + unsigned int opcode : 6; +}; + +struct c_format { /* Cache (>= R6000) format */ + unsigned int simmediate : 16; + unsigned int cache : 2; + unsigned int c_op : 3; + unsigned int rs : 5; + unsigned int opcode : 6; +}; + +struct r_format { /* Register format */ + unsigned int func : 6; + unsigned int re : 5; + unsigned int rd : 5; + unsigned int rt : 5; + unsigned int rs : 5; + unsigned int opcode : 6; +}; + +struct p_format { /* Performance counter format (R10000) */ + unsigned int func : 6; + unsigned int re : 5; + unsigned int rd : 5; + unsigned int rt : 5; + unsigned int rs : 5; + unsigned int opcode : 6; +}; + +struct f_format { /* FPU register format */ + unsigned int func : 6; + unsigned int re : 5; + unsigned int rd : 5; + unsigned int rt : 5; + unsigned int fmt : 4; + unsigned int : 1; + unsigned int opcode : 6; +}; + +struct ma_format { /* FPU multipy and add format (MIPS IV) */ + unsigned int fmt : 2; + unsigned int func : 4; + unsigned int fd : 5; + unsigned int fs : 5; + unsigned int ft : 5; + unsigned int fr : 5; + unsigned int opcode : 6; +}; + +#else /* !defined (__MIPSEB__) && !defined (__MIPSEL__) */ +#error "MIPS but neither __MIPSEL__ nor __MIPSEB__?" +#endif + +union mips_instruction { + unsigned int word; + unsigned short halfword[2]; + unsigned char byte[4]; + struct j_format j_format; + struct i_format i_format; + struct u_format u_format; + struct c_format c_format; + struct r_format r_format; + struct f_format f_format; + struct ma_format ma_format; +}; + +/* HACHACHAHCAHC ... */ + +/* In case some other massaging is needed, keep MIPSInst as wrapper */ + +#define MIPSInst(x) x + +#define I_OPCODE_SFT 26 +#define MIPSInst_OPCODE(x) (MIPSInst(x) >> I_OPCODE_SFT) + +#define I_JTARGET_SFT 0 +#define MIPSInst_JTARGET(x) (MIPSInst(x) & 0x03ffffff) + +#define I_RS_SFT 21 +#define MIPSInst_RS(x) ((MIPSInst(x) & 0x03e00000) >> I_RS_SFT) + +#define I_RT_SFT 16 +#define MIPSInst_RT(x) ((MIPSInst(x) & 0x001f0000) >> I_RT_SFT) + +#define I_IMM_SFT 0 +#define MIPSInst_SIMM(x) ((int)((short)(MIPSInst(x) & 0xffff))) +#define MIPSInst_UIMM(x) (MIPSInst(x) & 0xffff) + +#define I_CACHEOP_SFT 18 +#define MIPSInst_CACHEOP(x) ((MIPSInst(x) & 0x001c0000) >> I_CACHEOP_SFT) + +#define I_CACHESEL_SFT 16 +#define MIPSInst_CACHESEL(x) ((MIPSInst(x) & 0x00030000) >> I_CACHESEL_SFT) + +#define I_RD_SFT 11 +#define MIPSInst_RD(x) ((MIPSInst(x) & 0x0000f800) >> I_RD_SFT) + +#define I_RE_SFT 6 +#define MIPSInst_RE(x) ((MIPSInst(x) & 0x000007c0) >> I_RE_SFT) + +#define I_FUNC_SFT 0 +#define MIPSInst_FUNC(x) (MIPSInst(x) & 0x0000003f) + +#define I_FFMT_SFT 21 +#define MIPSInst_FFMT(x) ((MIPSInst(x) & 0x01e00000) >> I_FFMT_SFT) + +#define I_FT_SFT 16 +#define MIPSInst_FT(x) ((MIPSInst(x) & 0x001f0000) >> I_FT_SFT) + +#define I_FS_SFT 11 +#define MIPSInst_FS(x) ((MIPSInst(x) & 0x0000f800) >> I_FS_SFT) + +#define I_FD_SFT 6 +#define MIPSInst_FD(x) ((MIPSInst(x) & 0x000007c0) >> I_FD_SFT) + +#define I_FR_SFT 21 +#define MIPSInst_FR(x) ((MIPSInst(x) & 0x03e00000) >> I_FR_SFT) + +#define I_FMA_FUNC_SFT 2 +#define MIPSInst_FMA_FUNC(x) ((MIPSInst(x) & 0x0000003c) >> I_FMA_FUNC_SFT) + +#define I_FMA_FFMT_SFT 0 +#define MIPSInst_FMA_FFMT(x) (MIPSInst(x) & 0x00000003) + +typedef unsigned int mips_instruction; + +#endif /* _ASM_INST_H */ |