Annotation of sys/arch/sparc/include/instr.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: instr.h,v 1.4 2003/07/14 00:45:20 jason Exp $ */
! 2: /* $NetBSD: instr.h,v 1.3 1997/03/14 23:54:07 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1992, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This software was developed by the Computer Systems Engineering group
! 9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 10: * contributed to Berkeley.
! 11: *
! 12: * All advertising materials mentioning features or use of this software
! 13: * must display the following acknowledgement:
! 14: * This product includes software developed by the University of
! 15: * California, Lawrence Berkeley Laboratory.
! 16: *
! 17: * Redistribution and use in source and binary forms, with or without
! 18: * modification, are permitted provided that the following conditions
! 19: * are met:
! 20: * 1. Redistributions of source code must retain the above copyright
! 21: * notice, this list of conditions and the following disclaimer.
! 22: * 2. Redistributions in binary form must reproduce the above copyright
! 23: * notice, this list of conditions and the following disclaimer in the
! 24: * documentation and/or other materials provided with the distribution.
! 25: * 3. Neither the name of the University nor the names of its contributors
! 26: * may be used to endorse or promote products derived from this software
! 27: * without specific prior written permission.
! 28: *
! 29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 39: * SUCH DAMAGE.
! 40: *
! 41: * @(#)instr.h 8.1 (Berkeley) 6/11/93
! 42: */
! 43:
! 44: /* see also Appendix F of the SPARC version 8 document */
! 45: enum IOP { IOP_OP2, IOP_CALL, IOP_reg, IOP_mem };
! 46: enum IOP2 { IOP2_UNIMP, IOP2_err1, IOP2_Bicc, IOP2_err3,
! 47: IOP2_SETHI, IOP2_err5, IOP2_FBfcc, IOP2_CBccc };
! 48: enum IOP3_reg {
! 49: IOP3_ADD, IOP3_AND, IOP3_OR, IOP3_XOR,
! 50: IOP3_SUB, IOP3_ANDN, IOP3_ORN, IOP3_XNOR,
! 51: IOP3_ADDX, IOP3_rerr09, IOP3_UMUL, IOP3_SMUL,
! 52: IOP3_SUBX, IOP3_rerr0d, IOP3_UDIV, IOP3_SDIV,
! 53: IOP3_ADDcc, IOP3_ANDcc, IOP3_ORcc, IOP3_XORcc,
! 54: IOP3_SUBcc, IOP3_ANDNcc, IOP3_ORNcc, IOP3_XNORcc,
! 55: IOP3_ADDXcc, IOP3_rerr19, IOP3_UMULcc, IOP3_SMULcc,
! 56: IOP3_SUBXcc, IOP3_rerr1d, IOP3_UDIVcc, IOP3_SDIVcc,
! 57: IOP3_TADDcc, IOP3_TSUBcc, IOP3_TADDccTV, IOP3_TSUBccTV,
! 58: IOP3_MULScc, IOP3_SLL, IOP3_SRL, IOP3_SRA,
! 59: IOP3_RDASR_RDY_STBAR, IOP3_RDPSR, IOP3_RDWIM, IOP3_RDTGBR,
! 60: IOP3_rerr2c, IOP3_rerr2d, IOP3_rerr2e, IOP3_rerr2f,
! 61: IOP3_WRASR_WRY, IOP3_WRPSR, IOP3_WRWIM, IOP3_WRTBR,
! 62: IOP3_FPop1, IOP3_FPop2, IOP3_CPop1, IOP3_CPop2,
! 63: IOP3_JMPL, IOP3_RETT, IOP3_Ticc, IOP3_FLUSH,
! 64: IOP3_SAVE, IOP3_RESTORE, IOP3_rerr3e, IOP3_rerr3f
! 65: };
! 66: enum IOP3_mem {
! 67: IOP3_LD, IOP3_LDUB, IOP3_LDUH, IOP3_LDD,
! 68: IOP3_ST, IOP3_STB, IOP3_STH, IOP3_STD,
! 69: IOP3_merr08, IOP3_LDSB, IOP3_LDSH, IOP3_merr0b,
! 70: IOP3_merr0c, IOP3_LDSTUB, IOP3_merr0f, IOP3_SWAP,
! 71: IOP3_LDA, IOP3_LDUBA, IOP3_LDUHA, IOP3_LDDA,
! 72: IOP3_STA, IOP3_STBA, IOP3_STHA, IOP3_STDA,
! 73: IOP3_merr18, IOP3_LDSBA, IOP3_LDSHA, IOP3_merr1b,
! 74: IOP3_merr1c, IOP3_LDSTUBA, IOP3_merr1f, IOP3_SWAPA,
! 75: IOP3_LDF, IOP3_LDFSR, IOP3_merr22, IOP3_LDDF,
! 76: IOP3_STF, IOP3_STFSR, IOP3_STDFQ, IOP3_STDF,
! 77: IOP3_merr28, IOP3_merr29, IOP3_merr2a, IOP3_merr2b,
! 78: IOP3_merr2c, IOP3_merr2d, IOP3_merr2e, IOP3_merr2f,
! 79: IOP3_LFC, IOP3_LDCSR, IOP3_merr32, IOP3_LDDC,
! 80: IOP3_STC, IOP3_STCSR, IOP3_STDCQ, IOP3_STDC,
! 81: IOP3_merr38, IOP3_merr39, IOP3_merr3a, IOP3_merr3b,
! 82: IOP3_merr3c, IOP3_merr3d, IOP3_merr3e, IOP3_merr3f
! 83: };
! 84:
! 85: /*
! 86: * Integer condition codes.
! 87: */
! 88: #define Icc_N 0x0 /* never */
! 89: #define Icc_E 0x1 /* equal (equiv. zero) */
! 90: #define Icc_LE 0x2 /* less or equal */
! 91: #define Icc_L 0x3 /* less */
! 92: #define Icc_LEU 0x4 /* less or equal unsigned */
! 93: #define Icc_CS 0x5 /* carry set (equiv. less unsigned) */
! 94: #define Icc_NEG 0x6 /* negative */
! 95: #define Icc_VS 0x7 /* overflow set */
! 96: #define Icc_A 0x8 /* always */
! 97: #define Icc_NE 0x9 /* not equal (equiv. not zero) */
! 98: #define Icc_G 0xa /* greater */
! 99: #define Icc_GE 0xb /* greater or equal */
! 100: #define Icc_GU 0xc /* greater unsigned */
! 101: #define Icc_CC 0xd /* carry clear (equiv. gtr or eq unsigned) */
! 102: #define Icc_POS 0xe /* positive */
! 103: #define Icc_VC 0xf /* overflow clear */
! 104:
! 105: /*
! 106: * Integer registers.
! 107: */
! 108: #define I_G0 0
! 109: #define I_G1 1
! 110: #define I_G2 2
! 111: #define I_G3 3
! 112: #define I_G4 4
! 113: #define I_G5 5
! 114: #define I_G6 6
! 115: #define I_G7 7
! 116: #define I_O0 8
! 117: #define I_O1 9
! 118: #define I_O2 10
! 119: #define I_O3 11
! 120: #define I_O4 12
! 121: #define I_O5 13
! 122: #define I_O6 14
! 123: #define I_O7 15
! 124: #define I_L0 16
! 125: #define I_L1 17
! 126: #define I_L2 18
! 127: #define I_L3 19
! 128: #define I_L4 20
! 129: #define I_L5 21
! 130: #define I_L6 22
! 131: #define I_L7 23
! 132: #define I_I0 24
! 133: #define I_I1 25
! 134: #define I_I2 26
! 135: #define I_I3 27
! 136: #define I_I4 28
! 137: #define I_I5 29
! 138: #define I_I6 30
! 139: #define I_I7 31
! 140:
! 141: /*
! 142: * An instruction.
! 143: */
! 144: union instr {
! 145: int i_int; /* as a whole */
! 146:
! 147: /*
! 148: * The first level of decoding is to use the top 2 bits.
! 149: * This gives us one of three `formats', which usually give
! 150: * a second level of decoding.
! 151: */
! 152: struct {
! 153: u_int i_op:2; /* first-level decode */
! 154: u_int :30;
! 155: } i_any;
! 156:
! 157: /*
! 158: * Format 1 instructions: CALL (undifferentiated).
! 159: */
! 160: struct {
! 161: u_int :2; /* 01 */
! 162: int i_disp:30; /* displacement */
! 163: } i_call;
! 164:
! 165: /*
! 166: * Format 2 instructions (SETHI, UNIMP, and branches, plus illegal
! 167: * unused codes).
! 168: */
! 169: struct {
! 170: u_int :2; /* 00 */
! 171: u_int :5;
! 172: u_int i_op2:3; /* second-level decode */
! 173: u_int :22;
! 174: } i_op2;
! 175:
! 176: /* UNIMP, SETHI */
! 177: struct {
! 178: u_int :2; /* 00 */
! 179: u_int i_rd:5; /* destination register */
! 180: u_int i_op2:3; /* opcode: UNIMP or SETHI */
! 181: u_int i_imm:22; /* immediate value */
! 182: } i_imm22;
! 183:
! 184: /* branches: Bicc, FBfcc, CBccc */
! 185: struct {
! 186: u_int :2; /* 00 */
! 187: u_int i_annul:1; /* annul bit */
! 188: u_int i_cond:4; /* condition codes */
! 189: u_int i_op2:3; /* opcode: {Bi,FBf,CBc}cc */
! 190: int i_disp:22; /* branch displacement */
! 191: } i_branch;
! 192:
! 193: /*
! 194: * Format 3 instructions (memory reference; arithmetic, logical,
! 195: * shift, and other miscellaneous operations). The second-level
! 196: * decode almost always makes use of an `rd' and `rs1', however
! 197: * (see also IOP3_reg and IOP3_mem).
! 198: *
! 199: * Beyond that, the low 14 bits may be broken up in one of three
! 200: * different ways, if at all:
! 201: * 1 bit of imm=0 + 8 bits of asi + 5 bits of rs2 [reg & mem]
! 202: * 1 bit of imm=1 + 13 bits of signed immediate [reg & mem]
! 203: * 9 bits of copressor `opf' opcode + 5 bits of rs2 [reg only]
! 204: */
! 205: struct {
! 206: u_int :2; /* 10 or 11 */
! 207: u_int i_rd:5; /* destination register */
! 208: u_int i_op3:6; /* second-level decode */
! 209: u_int i_rs1:5; /* source register 1 */
! 210: u_int i_low14:14; /* varies */
! 211: } i_op3;
! 212:
! 213: /*
! 214: * Memory forms. These set i_op=3 and use simm13 or asi layout.
! 215: * Memory references without an ASI should use 0, but the actual
! 216: * ASI field is simply ignored.
! 217: */
! 218: struct {
! 219: u_int :2; /* 11 only */
! 220: u_int i_rd:5; /* destination register */
! 221: u_int i_op3:6; /* second-level decode (see IOP3_mem) */
! 222: u_int i_rs1:5; /* source register 1 */
! 223: u_int i_i:1; /* immediate vs asi */
! 224: u_int i_low13:13; /* depend on i bit */
! 225: } i_loadstore;
! 226:
! 227: /*
! 228: * Memory and register forms.
! 229: * These come in quite a variety and we do not
! 230: * attempt to break them down much.
! 231: */
! 232: struct {
! 233: u_int :2; /* 10 or 11 */
! 234: u_int i_rd:5; /* destination register */
! 235: u_int i_op3:6; /* second-level decode */
! 236: u_int i_rs1:5; /* source register 1 */
! 237: u_int i_i:1; /* immediate bit (1) */
! 238: int i_simm13:13; /* signed immediate */
! 239: } i_simm13;
! 240: struct {
! 241: u_int :2; /* 10 or 11 */
! 242: u_int i_rd:5; /* destination register */
! 243: u_int i_op3:6; /* second-level decode */
! 244: u_int i_rs1:5; /* source register 1 */
! 245: u_int i_i:1; /* immediate vs asi */
! 246: u_int i_asi:8; /* asi */
! 247: u_int i_rs2:5; /* source register 2 */
! 248: } i_asi;
! 249: struct {
! 250: u_int :2; /* 10 only (register, no memory) */
! 251: u_int i_rd:5; /* destination register */
! 252: u_int i_op3:6; /* second-level decode (see IOP3_reg) */
! 253: u_int i_rs1:5; /* source register 1 */
! 254: u_int i_opf:9; /* coprocessor 3rd-level decode */
! 255: u_int i_rs2:5; /* source register 2 */
! 256: } i_opf;
! 257:
! 258: };
! 259:
! 260: /*
! 261: * Internal macros for building instructions. These correspond 1-to-1 to
! 262: * the names above. Note that x << y | z == (x << y) | z.
! 263: */
! 264: #define _I_ANY(op, b) ((op) << 30 | (b))
! 265:
! 266: #define _I_OP2(high, op2, low) \
! 267: _I_ANY(IOP_OP2, (high) << 25 | (op2) << 22 | (low))
! 268: #define _I_IMM22(rd, op2, imm) \
! 269: _I_ANY(IOP_OP2, (rd) << 25 | (op2) << 22 | (imm))
! 270: #define _I_BRANCH(a, c, op2, disp) \
! 271: _I_ANY(IOP_OP2, (a) << 29 | (c) << 25 | (op2) << 22 | (disp))
! 272: #define _I_FBFCC(a, cond, disp) \
! 273: _I_BRANCH(a, cond, IOP2_FBfcc, disp)
! 274: #define _I_CBCCC(a, cond, disp) \
! 275: _I_BRANCH(a, cond, IOP2_CBccc, disp)
! 276:
! 277: #define _I_SIMM(simm) (1 << 13 | ((simm) & 0x1fff))
! 278:
! 279: #define _I_OP3_GEN(form, rd, op3, rs1, low14) \
! 280: _I_ANY(form, (rd) << 25 | (op3) << 19 | (rs1) << 14 | (low14))
! 281: #define _I_OP3_LS_RAR(rd, op3, rs1, asi, rs2) \
! 282: _I_OP3_GEN(IOP_mem, rd, op3, rs1, (asi) << 5 | (rs2))
! 283: #define _I_OP3_LS_RI(rd, op3, rs1, simm13) \
! 284: _I_OP3_GEN(IOP_mem, rd, op3, rs1, _I_SIMM(simm13))
! 285: #define _I_OP3_LS_RR(rd, op3, rs1, rs2) \
! 286: _I_OP3_GEN(IOP_mem, rd, op3, rs1, rs2)
! 287: #define _I_OP3_R_RAR(rd, op3, rs1, asi, rs2) \
! 288: _I_OP3_GEN(IOP_reg, rd, op3, rs1, (asi) << 5 | (rs2))
! 289: #define _I_OP3_R_RI(rd, op3, rs1, simm13) \
! 290: _I_OP3_GEN(IOP_reg, rd, op3, rs1, _I_SIMM(simm13))
! 291: #define _I_OP3_R_RR(rd, op3, rs1, rs2) \
! 292: _I_OP3_GEN(IOP_reg, rd, op3, rs1, rs2)
! 293:
! 294: #define I_CALL(d) _I_ANY(IOP_CALL, d)
! 295: #define I_UNIMP(v) _I_IMM22(0, IOP2_UNIMP, v)
! 296: #define I_BN(a, d) _I_BRANCH(a, Icc_N, IOP2_Bicc, d)
! 297: #define I_BE(a, d) _I_BRANCH(a, Icc_E, IOP2_Bicc, d)
! 298: #define I_BZ(a, d) _I_BRANCH(a, Icc_E, IOP2_Bicc, d)
! 299: #define I_BLE(a, d) _I_BRANCH(a, Icc_LE, IOP2_Bicc, d)
! 300: #define I_BL(a, d) _I_BRANCH(a, Icc_L, IOP2_Bicc, d)
! 301: #define I_BLEU(a, d) _I_BRANCH(a, Icc_LEU, IOP2_Bicc, d)
! 302: #define I_BCS(a, d) _I_BRANCH(a, Icc_CS, IOP2_Bicc, d)
! 303: #define I_BLU(a, d) _I_BRANCH(a, Icc_CS, IOP2_Bicc, d)
! 304: #define I_BNEG(a, d) _I_BRANCH(a, Icc_NEG, IOP2_Bicc, d)
! 305: #define I_BVS(a, d) _I_BRANCH(a, Icc_VS, IOP2_Bicc, d)
! 306: #define I_BA(a, d) _I_BRANCH(a, Icc_A, IOP2_Bicc, d)
! 307: #define I_B(a, d) _I_BRANCH(a, Icc_A, IOP2_Bicc, d)
! 308: #define I_BNE(a, d) _I_BRANCH(a, Icc_NE, IOP2_Bicc, d)
! 309: #define I_BNZ(a, d) _I_BRANCH(a, Icc_NE, IOP2_Bicc, d)
! 310: #define I_BG(a, d) _I_BRANCH(a, Icc_G, IOP2_Bicc, d)
! 311: #define I_BGE(a, d) _I_BRANCH(a, Icc_GE, IOP2_Bicc, d)
! 312: #define I_BGU(a, d) _I_BRANCH(a, Icc_GU, IOP2_Bicc, d)
! 313: #define I_BCC(a, d) _I_BRANCH(a, Icc_CC, IOP2_Bicc, d)
! 314: #define I_BGEU(a, d) _I_BRANCH(a, Icc_CC, IOP2_Bicc, d)
! 315: #define I_BPOS(a, d) _I_BRANCH(a, Icc_POS, IOP2_Bicc, d)
! 316: #define I_BVC(a, d) _I_BRANCH(a, Icc_VC, IOP2_Bicc, d)
! 317: #define I_SETHI(r, v) _I_IMM22(r, 4, v)
! 318:
! 319: #define I_ORri(rd, rs1, imm) _I_OP3_R_RI(rd, IOP3_OR, rs1, imm)
! 320: #define I_ORrr(rd, rs1, rs2) _I_OP3_R_RR(rd, IOP3_OR, rs1, rs2)
! 321:
! 322: #define I_MOVi(rd, imm) _I_OP3_R_RI(rd, IOP3_OR, I_G0, imm)
! 323: #define I_MOVr(rd, rs) _I_OP3_R_RR(rd, IOP3_OR, I_G0, rs)
! 324:
! 325: #define I_RDPSR(rd) _I_OP3_R_RR(rd, IOP3_RDPSR, 0, 0)
! 326:
! 327: #define I_JMPLri(rd, rs1, imm) _I_OP3_R_RI(rd, IOP3_JMPL, rs1, imm)
! 328: #define I_JMPLrr(rd, rs1, rs2) _I_OP3_R_RR(rd, IOP3_JMPL, rs1, rs2)
! 329:
! 330: /*
! 331: * (Since these are sparse, we skip the enumerations for now.)
! 332: * FPop values. All appear in both FPop1 and FPop2 spaces, but arithmetic
! 333: * ops should happen only with FPop1 and comparison only with FPop2.
! 334: * The type sits in the low two bits; those bits are given as zero here.
! 335: */
! 336: #define FMOV 0x00
! 337: #define FNEG 0x04
! 338: #define FABS 0x08
! 339: #define FSQRT 0x28
! 340: #define FADD 0x40
! 341: #define FSUB 0x44
! 342: #define FMUL 0x48
! 343: #define FDIV 0x4c
! 344: #define FCMP 0x50
! 345: #define FCMPE 0x54
! 346: #define FSMULD 0x68
! 347: #define FDMULX 0x6c
! 348: #define FTOS 0xc4
! 349: #define FTOD 0xc8
! 350: #define FTOX 0xcc
! 351: #define FTOI 0xd0
! 352:
! 353: /*
! 354: * FPU data types.
! 355: */
! 356: #define FTYPE_INT 0 /* data = 32-bit signed integer */
! 357: #define FTYPE_SNG 1 /* data = 32-bit float */
! 358: #define FTYPE_DBL 2 /* data = 64-bit double */
! 359: #define FTYPE_EXT 3 /* data = 128-bit extended (quad-prec) */
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