mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 00:42:16 +00:00
395 lines
9.5 KiB
C
395 lines
9.5 KiB
C
/*
|
|
* 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 */
|