--- /dev/null
+/*
+ * 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
+ * Copyright (C) 2006 by Thiemo Seufer
+ */
+#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,
+ spec2_op, jalx_op, mdmx_op, spec3_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,
+ 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, pmon_op, srlv_op, srav_op,
+ 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
+};
+
+/*
+ * func field of spec2 opcode.
+ */
+enum spec2_op {
+ madd_op, maddu_op, mul_op, spec2_3_unused_op,
+ msub_op, msubu_op, /* more unused ops */
+ clz_op = 0x20, clo_op,
+ dclz_op = 0x24, dclo_op,
+ sdbpp_op = 0x3f
+};
+
+/*
+ * func field of spec3 opcode.
+ */
+enum spec3_op {
+ ext_op, dextm_op, dextu_op, dext_op,
+ ins_op, dinsm_op, dinsu_op, dins_op,
+ bshfl_op = 0x20,
+ dbshfl_op = 0x24,
+ rdhwr_op = 0x3b
+};
+
+/*
+ * 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,
+ rt_op_0x14, rt_op_0x15, rt_op_0x16, rt_op_0x17,
+ rt_op_0x18, rt_op_0x19, rt_op_0x1a, rt_op_0x1b,
+ bposge32_op, rt_op_0x1d, rt_op_0x1e, rt_op_0x1f
+};
+
+/*
+ * 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_fp_op = 0x08, msub_fp_op = 0x0a,
+ nmadd_fp_op = 0x0c, nmsub_fp_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 */
git.openpandora.org / pandora-kernel.git / blobdiff