+/* integer instructions *******************************************************/
+
+#define M_IAND(a,b,d) MI_and(d, a, b)
+#define M_IAND_IMM(a,b,d) MI_andi(d, a, b)
+#define M_IOR(a,b,d) MI_or(d, a, b)
+#define M_IOR_IMM(a,b,d) MI_ori(d, a, b)
+#define M_IOR_TST(a,b,d) MI_ordot(d, a, b)
+#define M_ISUB(a,b,d) MI_subf(d, b, a)
+#define M_ISUB_TST(a,b,d) MI_subfdot(d, b, a)
+#define M_MOV(a,d) MI_or(d, a, a)
+#define M_NOP MI_ori(0, 0, 0)
+
+
+#define M_ADDC(a,b,c) M_OP3(31, 10, 0, 0, c, a, b)
+#define M_ADDE(a,b,c) M_OP3(31, 138, 0, 0, c, a, b)
+#define M_ADDIC(a,b,c) M_OP2_IMM(12, c, a, b)
+#define M_ADDICTST(a,b,c) M_OP2_IMM(13, c, a, b)
+#define M_ADDIS(a,b,c) M_OP2_IMM(15, c, a, b)
+#define M_ADDME(a,b) M_OP3(31, 234, 0, 0, b, a, 0)
+#define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
+#define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
+#define M_ANDIS(a,b,c) M_OP2_IMM(29, a, c, b)
+#define M_BEQ(a) M_BC(12, 2, a, 0, 0)
+#define M_BGE(a) M_BC(4, 0, a, 0, 0)
+#define M_BGT(a) M_BC(12, 1, a, 0, 0)
+#define M_BL(a) M_B(a, 0, 1)
+#define M_BLDU(a,b,c) M_OP2_IMM(34, a, b, c)
+#define M_BLE(a) M_BC(4, 1, a, 0, 0)
+#define M_BLT(a) M_BC(12, 0, a, 0, 0)
+#define M_BNAN(a) M_BC(12, 3, a, 0, 0)
+#define M_BNE(a) M_BC(4, 2, a, 0, 0)
+#define M_BR(a) M_B(a, 0, 0)
+#define M_BSEXT(a,b) M_OP3(31, 954, 0, 0, a, b, 0)
+#define M_BST(a,b,c) M_OP2_IMM(38, a, b, c)
+#define M_CMP(a,b) M_OP3(31, 0, 0, 0, 0, a, b)
+#define M_CMPI(a,b) M_OP2_IMM(11, 0, a, b)
+#define M_CMPU(a,b) M_OP3(31, 32, 0, 0, 0, a, b)
+#define M_CMPUI(a,b) M_OP2_IMM(10, 0, a, b)
+#define M_CZEXT(a,b) M_RLWINM(a,0,16,31,b)
+#define M_IADD(a,b,c) M_OP3(31, 266, 0, 0, c, a, b)
+#define M_IADD_IMM(a,b,c) M_OP2_IMM(14, c, a, b)
+#define M_IDIV(a,b,c) M_OP3(31, 491, 0, 0, c, a, b)
+#define M_IMUL(a,b,c) M_OP3(31, 235, 0, 0, c, a, b)
+#define M_IMUL_IMM(a,b,c) M_OP2_IMM(7, c, a, b)
+#define M_JSR M_OP3(19, 528, 0, 1, 20, 0, 0)
+#define M_LBZX(a,b,c) M_OP3(31, 87, 0, 0, a, b, c)
+#define M_LHAX(a,b,c) M_OP3(31, 343, 0, 0, a, b, c)
+#define M_LHZX(a,b,c) M_OP3(31, 279, 0, 0, a, b, c)
+#define M_LWZX(a,b,c) M_OP3(31, 23, 0, 0, a, b, c)
+#define M_MFCTR(a) M_OP3(31, 339, 0, 0, a, 9, 0)
+#define M_MFLR(a) M_OP3(31, 339, 0, 0, a, 8, 0)
+#define M_MFXER(a) M_OP3(31, 339, 0, 0, a, 1, 0)
+#define M_MTCTR(a) M_OP3(31, 467, 0, 0, a, 9, 0)
+#define M_MTLR(a) M_OP3(31, 467, 0, 0, a, 8, 0)
+#define M_MTXER(a) M_OP3(31, 467, 0, 0, a, 1, 0)
+#define M_NEG(a,b) M_OP3(31, 104, 0, 0, b, a, 0)
+#define M_NOT(a,b) M_OP3(31, 124, 0, 0, a, b, a)
+#define M_ORIS(a,b,c) M_OP2_IMM(25, a, c, b)
+#define M_RET M_OP3(19, 16, 0, 0, 20, 0, 0)
+#define M_RLWINM(a,b,c,d,e) M_OP4(21, d, 0, a, e, b, c)
+#define M_RTS M_OP3(19, 528, 0, 0, 20, 0, 0)
+#define M_SLDU(a,b,c) M_OP2_IMM(40, a, b, c)
+#define M_SLL(a,b,c) M_OP3(31, 24, 0, 0, a, c, b)
+#define M_SLL_IMM(a,b,c) M_RLWINM(a,b,0,31-(b),c)
+#define M_SRA(a,b,c) M_OP3(31, 792, 0, 0, a, c, b)
+#define M_SRA_IMM(a,b,c) M_OP3(31, 824, 0, 0, a, c, b)
+#define M_SRL(a,b,c) M_OP3(31, 536, 0, 0, a, c, b)
+#define M_SRL_IMM(a,b,c) M_RLWINM(a,32-(b),b,31,c)
+#define M_SSEXT(a,b) M_OP3(31, 922, 0, 0, a, b, 0)
+#define M_SST(a,b,c) M_OP2_IMM(44, a, b, c)
+#define M_STBX(a,b,c) M_OP3(31, 215, 0, 0, a, b, c)
+#define M_STHX(a,b,c) M_OP3(31, 407, 0, 0, a, b, c)
+#define M_STWUX(a,b,c) M_OP3(31,183,0,0,a,b,c)
+#define M_STWX(a,b,c) M_OP3(31, 151, 0, 0, a, b, c)
+#define M_SUBC(a,b,c) M_OP3(31, 8, 0, 0, c, b, a)
+#define M_SUBE(a,b,c) M_OP3(31, 136, 0, 0, c, b, a)
+#define M_SUBFIC(a,b,c) M_OP2_IMM(8, c, a, b)
+#define M_SUBFZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
+#define M_SUBIC(a,b,c) M_OP2_IMM(8, c, b, a)
+#define M_SUBME(a,b) M_OP3(31, 232, 0, 0, b, a, 0)
+#define M_SUBZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
+#define M_TRAP M_OP3(31, 4, 0, 0, 31, 0, 0)
+#define M_TRAPGEU(a,b) M_OP3(31, 4, 0, 0, 5, a, b)
+#define M_TST(a) M_OP3(31, 444, 0, 1, a, a, a)
+#define M_XOR(a,b,c) M_OP3(31, 316, 0, 0, a, c, b)
+#define M_XORIS(a,b,c) M_OP2_IMM(27, a, c, b)
+#define M_XOR_IMM(a,b,c) M_OP2_IMM(26, a, c, b)
+
+
+#define M_LDAH(a,b,c) M_ADDIS(b, c, a)
+#define M_LDATST(a,b,c) M_ADDICTST(b, c, a)
+#define M_CLR(a) M_IADD_IMM(0, 0, a)
+
+
+#define M_ILD_INTERN(a,b,disp) M_OP2_IMM(32,a,b,disp)
+
+#define M_ILD(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_ILD_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,a); \
+ M_ILD_INTERN(a,a,lo); \
+ } \
+ } while (0)
+
+#define M_LLD_INTERN(a,b,disp) \
+ do { \
+ M_ILD_INTERN(GET_HIGH_REG(a), b, disp); \
+ M_ILD_INTERN(GET_LOW_REG(a), b, disp + 4); \
+ } while (0)
+
+#define M_LLD(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_LLD_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,a); \
+ M_LLD_INTERN(a,GET_LOW_REG(a),lo); \
+ } \
+ } while (0)
+
+#define M_IST_INTERN(a,b,disp) M_OP2_IMM(36,a,b,disp)
+
+/* Stores with displacement overflow should only happen with PUTFIELD
+ or on the stack. The PUTFIELD instruction does not use REG_ITMP3
+ and a reg_of_var call should not use REG_ITMP3!!! */
+
+#define M_IST(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_IST_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,REG_ITMP3); \
+ M_IST_INTERN(a,REG_ITMP3,lo); \
+ } \
+ } while (0)
+
+#define M_LST_INTERN(a,b,disp) \
+ do { \
+ M_IST_INTERN(GET_HIGH_REG(a), b, disp); \
+ M_IST_INTERN(GET_LOW_REG(a), b, disp + 4); \
+ } while (0)
+
+#define M_LST(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_LST_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,REG_ITMP3); \
+ M_LST_INTERN(a,REG_ITMP3, lo); \
+ } \
+ } while (0)
+
+#define M_STWU_INTERN(a,b,disp) M_OP2_IMM(37,a,b,disp)
+
+#define M_STWU(a,b,disp) \
+ do { \
+ s4 lo = (disp) & 0x0000ffff; \
+ s4 hi = ((disp) >> 16); \
+ if (((disp) >= -32678) && ((disp) <= 32767)) { \
+ M_STWU_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(REG_ZERO,hi,REG_ITMP3); \
+ M_IOR_IMM(REG_ITMP3,lo,REG_ITMP3); \
+ M_STWUX(REG_SP,REG_SP,REG_ITMP3); \
+ } \
+ } while (0)
+
+#define M_LDA_INTERN(a,b,c) M_IADD_IMM(b, c, a)
+
+#define M_LDA(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_LDA_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,a); \
+ M_LDA_INTERN(a,a,lo); \
+ } \
+ } while (0)
+
+
+#define M_AADD(a,b,d) M_IADD(a, b, d)
+#define M_AADD_IMM(a,b,d) M_IADD_IMM(a, b, d)
+#define M_ALD_INTERN(a,b,disp) M_ILD_INTERN(a,b,disp)
+#define M_ALD(a,b,disp) M_ILD(a,b,disp)
+#define M_AST_INTERN(a,b,disp) M_IST_INTERN(a,b,disp)
+#define M_AST(a,b,disp) M_IST(a,b,disp)
+
+
+/* floating point instructions ************************************************/
+
+#define M_CVTDF(a,b) M_OP3(63, 12, 0, 0, b, 0, a)
+#define M_CVTDL(a,b) M_OP3(63, 14, 0, 0, b, 0, a)
+#define M_CVTDL_C(a,b) M_OP3(63, 15, 0, 0, b, 0, a)
+#define M_DADD(a,b,c) M_OP3(63, 21, 0, 0, c, a, b)
+#define M_DDIV(a,b,c) M_OP3(63, 18, 0, 0, c, a, b)
+#define M_DMUL(a,b,c) M_OP4(63, 25, 0, c, a, 0, b)
+#define M_DSQRT(a,b) M_OP3(63, 22, 0, 0, b, 0, a)
+#define M_DSUB(a,b,c) M_OP3(63, 20, 0, 0, c, a, b)
+#define M_FABS(a,b) M_OP3(63, 264, 0, 0, b, 0, a)
+#define M_FADD(a,b,c) M_OP3(59, 21, 0, 0, c, a, b)
+#define M_FCMPO(a,b) M_OP3(63, 32, 0, 0, 0, a, b)
+#define M_FCMPU(a,b) M_OP3(63, 0, 0, 0, 0, a, b)
+#define M_FDIV(a,b,c) M_OP3(59, 18, 0, 0, c, a, b)
+#define M_FMOV(a,b) M_OP3(63, 72, 0, 0, b, 0, a)
+#define M_FMOVN(a,b) M_OP3(63, 40, 0, 0, b, 0, a)
+#define M_FMUL(a,b,c) M_OP4(59, 25, 0, c, a, 0, b)
+#define M_FSQRT(a,b) M_OP3(59, 22, 0, 0, b, 0, a)
+#define M_FSUB(a,b,c) M_OP3(59, 20, 0, 0, c, a, b)
+#define M_LFDX(a,b,c) M_OP3(31, 599, 0, 0, a, b, c)
+#define M_LFSX(a,b,c) M_OP3(31, 535, 0, 0, a, b, c)
+#define M_STFDX(a,b,c) M_OP3(31, 727, 0, 0, a, b, c)
+#define M_STFIWX(a,b,c) M_OP3(31, 983, 0, 0, a, b, c)
+#define M_STFSX(a,b,c) M_OP3(31, 663, 0, 0, a, b, c)
+
+
+#define M_FLD_INTERN(a,b,disp) M_OP2_IMM(48,a,b,disp)
+
+#define M_FLD(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_FLD_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,REG_ITMP3); \
+ M_FLD_INTERN(a,REG_ITMP3,lo); \
+ } \
+ } while (0)
+
+#define M_DLD_INTERN(a,b,disp) M_OP2_IMM(50,a,b,disp)
+
+#define M_DLD(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_DLD_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,REG_ITMP3); \
+ M_DLD_INTERN(a,REG_ITMP3,lo); \
+ } \
+ } while (0)
+
+#define M_FST_INTERN(a,b,disp) M_OP2_IMM(52,a,b,disp)
+
+#define M_FST(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_FST_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,REG_ITMP3); \
+ M_FST_INTERN(a,REG_ITMP3,lo); \
+ } \
+ } while (0)
+
+#define M_DST_INTERN(a,b,disp) M_OP2_IMM(54,a,b,disp)
+
+#define M_DST(a,b,disp) \
+ do { \
+ s4 lo = (short) (disp); \
+ s4 hi = (short) (((disp) - lo) >> 16); \
+ if (hi == 0) { \
+ M_DST_INTERN(a,b,lo); \
+ } else { \
+ M_ADDIS(b,hi,REG_ITMP3); \
+ M_DST_INTERN(a,REG_ITMP3,lo); \
+ } \
+ } while (0)