-/* jit/powerpc/codegen.h - code generation macros and definitions for
- 32-bit powerpc
+/* src/vm/jit/powerpc/codegen.h - code generation macros and definitions for
+ 32-bit PowerPC
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- Institut f. Computersprachen, TU Wien
- R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
- M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
- P. Tomsich, J. Wenninger
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA.
-
- Contact: cacao@complang.tuwien.ac.at
-
- Authors: Andreas Krall
- Stefan Ring
-
- $Id: codegen.h 598 2003-11-09 20:12:22Z twisti $
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
*/
#ifndef _CODEGEN_H
#define _CODEGEN_H
-#include "jit.h"
+#include "config.h"
+
+#include "md-abi.h"
+
+#include "vm/global.h"
+#include "vm/jit/jit.h"
+#include "vm/jit/reg.h"
+
+
+/* additional functions and macros to generate code ***************************/
+
+/* MCODECHECK(icnt) */
+
+#define MCODECHECK(icnt) \
+ do { \
+ if ((cd->mcodeptr + (icnt) * 4) > cd->mcodeend) \
+ codegen_increase(cd); \
+ } while (0)
+
+
+/* M_INTMOVE:
+ generates an integer-move from register a to b.
+ if a and b are the same int-register, no code will be generated.
+*/
+
+#define M_INTMOVE(a,b) \
+ do { \
+ if ((a) != (b)) { \
+ M_MOV(a, b); \
+ } \
+ } while (0)
+
+#define M_LNGMOVE(a,b) \
+ do { \
+ if (GET_HIGH_REG(a) == GET_LOW_REG(b)) { \
+ assert((GET_LOW_REG(a) != GET_HIGH_REG(b))); \
+ M_INTMOVE(GET_HIGH_REG(a), GET_HIGH_REG(b)); \
+ M_INTMOVE(GET_LOW_REG(a), GET_LOW_REG(b)); \
+ } else { \
+ M_INTMOVE(GET_LOW_REG(a), GET_LOW_REG(b)); \
+ M_INTMOVE(GET_HIGH_REG(a), GET_HIGH_REG(b)); \
+ } \
+ } while (0)
+
+
+/* M_FLTMOVE:
+ generates a floating-point-move from register a to b.
+ if a and b are the same float-register, no code will be generated
+*/
+
+#define M_FLTMOVE(a,b) \
+ do { \
+ if ((a) != (b)) { \
+ M_FMOV(a, b); \
+ } \
+ } while (0)
+
+
+#define ICONST(d,c) emit_iconst(cd, (d), (c))
+#define LCONST(reg,c) \
+ ICONST(GET_HIGH_REG((reg)), (s4) ((s8) (c) >> 32)); \
+ ICONST(GET_LOW_REG((reg)), (s4) ((s8) (c)));
-/* see also file calling.doc for explanation of calling conventions */
-/* preallocated registers *****************************************************/
+#define ALIGNCODENOP \
+ if ((s4) ((ptrint) cd->mcodeptr & 7)) { \
+ M_NOP; \
+ }
-/* integer registers */
-
-#define REG_RESULT 3 /* to deliver method results */
-//#define REG_RA 26 /* return address */
-#define REG_PV 13 /* procedure vector, must be provided by caller */
-#define REG_METHODPTR 12 /* pointer to the place from where the procedure */
- /* vector has been fetched */
-#define REG_ITMP1 11 /* temporary register */
-#define REG_ITMP2 12 /* temporary register and method pointer */
-#define REG_ITMP3 0 /* temporary register */
+/* branch defines *************************************************************/
-#define REG_ITMP1_XPTR 11 /* exception pointer = temporary register 1 */
-#define REG_ITMP2_XPC 12 /* exception pc = temporary register 2 */
+#define BRANCH_NOPS \
+ do { \
+ if (CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) { \
+ M_NOP; \
+ M_NOP; \
+ } \
+ else { \
+ M_NOP; \
+ } \
+ } while (0)
-#define REG_SP 1 /* stack pointer */
-#define REG_ZERO 0 /* allways zero */
-/* floating point registers */
+/* patcher defines ************************************************************/
-#define REG_FRESULT 1 /* to deliver floating point method results */
-#define REG_FTMP1 16 /* temporary floating point register */
-#define REG_FTMP2 17 /* temporary floating point register */
-#define REG_FTMP3 0 /* temporary floating point register */
+#define PATCHER_CALL_SIZE 1 * 4 /* an instruction is 4-bytes long */
-#define REG_IFTMP 0 /* temporary integer and floating point register */
+#define PATCHER_NOPS \
+ do { \
+ M_NOP; \
+ } while (0)
-//#define INT_SAV_CNT 19 /* number of int callee saved registers */
-#define INT_ARG_CNT 8 /* number of int argument registers */
+/* stub defines ***************************************************************/
-//#define FLT_SAV_CNT 18 /* number of flt callee saved registers */
-#define FLT_ARG_CNT 13 /* number of flt argument registers */
+#define COMPILERSTUB_CODESIZE 1 * 4
/* macros to create code ******************************************************/
-#define M_OP3(x,y,oe,rc,d,a,b) \
- *mcodeptr++ = (((x)<<26) | ((d)<<21) | ((a)<<16) | ((b)<<11) | ((oe)<<10) | ((y)<<1) | (rc))
+#define M_OP3(opcode,y,oe,rc,d,a,b) \
+ do { \
+ *((u4 *) cd->mcodeptr) = (((opcode) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((oe) << 10) | ((y) << 1) | (rc)); \
+ cd->mcodeptr += 4; \
+ } while (0)
+
+#define M_OP3_GET_A(x) (((x) >> 16) & 0x1f )
+#define M_OP3_GET_B(x) (((x) >> 11) & 0x1f )
+
#define M_OP4(x,y,rc,d,a,b,c) \
- *mcodeptr++ = (((x)<<26) | ((d)<<21) | ((a)<<16) | ((b)<<11) | ((c)<<6) | ((y)<<1) | (rc))
+ do { \
+ *((u4 *) cd->mcodeptr) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((c) << 6) | ((y) << 1) | (rc)); \
+ cd->mcodeptr += 4; \
+ } while (0)
+
#define M_OP2_IMM(x,d,a,i) \
- *mcodeptr++ = (((x)<<26) | ((d)<<21) | ((a)<<16) | ((i)&0xffff))
-
-#define M_BRMASK (((1<<16)-1)&~3)
-#define M_BRAMASK (((1<<26)-1)&~3)
-
-#define M_BRA(x,i,a,l) \
- *mcodeptr++ = (((x)<<26) | (((i)*4+4)&M_BRAMASK) | ((a)<<1) | (l));
-
-#define M_BRAC(x,bo,bi,i,a,l) \
- *mcodeptr++ = (((x)<<26) | ((bo)<<21) | ((bi)<<16) | (((i)*4+4)&M_BRMASK) | ((a)<<1) | (l));
-
-#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_ADDC(a,b,c) M_OP3(31, 10, 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_ADDE(a,b,c) M_OP3(31, 138, 0, 0, c, a, b)
-#define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
-#define M_ADDME(a,b) M_OP3(31, 234, 0, 0, b, a, 0)
-#define M_ISUB(a,b,c) M_OP3(31, 40, 0, 0, c, b, a)
-#define M_ISUBTST(a,b,c) M_OP3(31, 40, 0, 1, c, b, a)
-#define M_SUBC(a,b,c) M_OP3(31, 8, 0, 0, c, b, a)
-#define M_SUBIC(a,b,c) M_OP2_IMM(8, c, b, a)
-#define M_SUBE(a,b,c) M_OP3(31, 136, 0, 0, c, b, a)
-#define M_SUBZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
-#define M_SUBME(a,b) M_OP3(31, 232, 0, 0, b, a, 0)
-#define M_AND(a,b,c) M_OP3(31, 28, 0, 0, a, c, b)
-#define M_AND_IMM(a,b,c) M_OP2_IMM(28, a, c, b)
-#define M_ANDIS(a,b,c) M_OP2_IMM(29, a, c, b)
-#define M_OR(a,b,c) M_OP3(31, 444, 0, 0, a, c, b)
-#define M_OR_IMM(a,b,c) M_OP2_IMM(24, a, c, b)
-#define M_ORIS(a,b,c) M_OP2_IMM(25, a, c, b)
-#define M_XOR(a,b,c) M_OP3(31, 316, 0, 0, a, c, b)
-#define M_XOR_IMM(a,b,c) M_OP2_IMM(26, a, c, b)
-#define M_XORIS(a,b,c) M_OP2_IMM(27, a, c, b)
-#define M_SLL(a,b,c) M_OP3(31, 24, 0, 0, a, c, b)
-#define M_SRL(a,b,c) M_OP3(31, 536, 0, 0, a, c, b)
-#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_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_IDIV(a,b,c) M_OP3(31, 491, 0, 0, c, a, b)
-#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_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_RLWINM(a,b,c,d,e) M_OP4(21, d, 0, a, e, b, c)
-#define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
-#define M_SLL_IMM(a,b,c) M_RLWINM(a,b,0,31-(b),c)
-#define M_SRL_IMM(a,b,c) M_RLWINM(a,32-(b),b,31,c)
-#define M_ADDIS(a,b,c) M_OP2_IMM(15, c, a, b)
-#define M_STFIWX(a,b,c) M_OP3(31, 983, 0, 0, a, b, c)
-#define M_LWZX(a,b,c) M_OP3(31, 23, 0, 0, a, b, c)
-#define M_LHZX(a,b,c) M_OP3(31, 279, 0, 0, a, b, c)
-#define M_LHAX(a,b,c) M_OP3(31, 343, 0, 0, a, b, c)
-#define M_LBZX(a,b,c) M_OP3(31, 87, 0, 0, a, b, c)
-#define M_LFSX(a,b,c) M_OP3(31, 535, 0, 0, a, b, c)
-#define M_LFDX(a,b,c) M_OP3(31, 599, 0, 0, a, b, c)
-#define M_STWX(a,b,c) M_OP3(31, 151, 0, 0, a, b, c)
-#define M_STHX(a,b,c) M_OP3(31, 407, 0, 0, a, b, c)
-#define M_STBX(a,b,c) M_OP3(31, 215, 0, 0, a, b, c)
-#define M_STFSX(a,b,c) M_OP3(31, 663, 0, 0, a, b, c)
-#define M_STFDX(a,b,c) M_OP3(31, 727, 0, 0, a, b, c)
-#define M_STWU(a,b,c) M_OP2_IMM(37, a, b, c)
-#define M_LDAH(a,b,c) M_ADDIS(b, c, a)
-#define M_TRAP M_OP3(31, 4, 0, 0, 31, 0, 0)
-
-#define M_NOP M_OR_IMM(0, 0, 0)
-#define M_MOV(a,b) M_OR(a, a, b)
-#define M_TST(a) M_OP3(31, 444, 0, 1, a, a, a)
-
-#define M_DADD(a,b,c) M_OP3(63, 21, 0, 0, c, a, b)
-#define M_FADD(a,b,c) M_OP3(59, 21, 0, 0, c, a, b)
-#define M_DSUB(a,b,c) M_OP3(63, 20, 0, 0, c, a, b)
-#define M_FSUB(a,b,c) M_OP3(59, 20, 0, 0, c, a, b)
-#define M_DMUL(a,b,c) M_OP4(63, 25, 0, c, a, 0, b)
-#define M_FMUL(a,b,c) M_OP4(59, 25, 0, c, a, 0, b)
-#define M_DDIV(a,b,c) M_OP3(63, 18, 0, 0, c, a, b)
-#define M_FDIV(a,b,c) M_OP3(59, 18, 0, 0, c, a, b)
-
-#define M_FABS(a,b) M_OP3(63, 264, 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_CVTDF(a,b) M_OP3(63, 12, 0, 0, b, 0, a)
-#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_DSQRT(a,b) M_OP3(63, 22, 0, 0, b, 0, a)
-#define M_FSQRT(a,b) M_OP3(59, 22, 0, 0, b, 0, a)
-
-#define M_FCMPU(a,b) M_OP3(63, 0, 0, 0, 0, a, b)
-#define M_FCMPO(a,b) M_OP3(63, 32, 0, 0, 0, a, b)
-
-#define M_BST(a,b,c) M_OP2_IMM(38, a, b, c)
-#define M_SST(a,b,c) M_OP2_IMM(44, a, b, c)
-#define M_IST(a,b,c) M_OP2_IMM(36, a, b, c)
-#define M_AST(a,b,c) M_OP2_IMM(36, a, b, c)
-#define M_BLDU(a,b,c) M_OP2_IMM(34, a, b, c)
-#define M_SLDU(a,b,c) M_OP2_IMM(40, a, b, c)
-#define M_ILD(a,b,c) M_OP2_IMM(32, a, b, c)
-#define M_ALD(a,b,c) M_OP2_IMM(32, a, b, c)
-
-#define M_BSEXT(a,b) M_OP3(31, 954, 0, 0, a, b, 0)
-#define M_SSEXT(a,b) M_OP3(31, 922, 0, 0, a, b, 0)
-#define M_CZEXT(a,b) M_RLWINM(a,0,16,31,b)
-
-#define M_BR(a) M_BRA(18, a, 0, 0);
-#define M_BL(a) M_BRA(18, a, 0, 1);
-#define M_RET M_OP3(19, 16, 0, 0, 20, 0, 0);
-#define M_JSR M_OP3(19, 528, 0, 1, 20, 0, 0);
-#define M_RTS M_OP3(19, 528, 0, 0, 20, 0, 0);
-
-#define M_CMP(a,b) M_OP3(31, 0, 0, 0, 0, a, b);
-#define M_CMPU(a,b) M_OP3(31, 32, 0, 0, 0, a, b);
-#define M_CMPI(a,b) M_OP2_IMM(11, 0, a, b);
-#define M_CMPUI(a,b) M_OP2_IMM(10, 0, a, b);
-
-#define M_BLT(a) M_BRAC(16, 12, 0, a, 0, 0);
-#define M_BLE(a) M_BRAC(16, 4, 1, a, 0, 0);
-#define M_BGT(a) M_BRAC(16, 12, 1, a, 0, 0);
-#define M_BGE(a) M_BRAC(16, 4, 0, a, 0, 0);
-#define M_BEQ(a) M_BRAC(16, 12, 2, a, 0, 0);
-#define M_BNE(a) M_BRAC(16, 4, 2, a, 0, 0);
-#define M_BNAN(a) M_BRAC(16, 12, 3, a, 0, 0);
-
-#define M_DLD(a,b,c) M_OP2_IMM(50, a, b, c)
-#define M_DST(a,b,c) M_OP2_IMM(54, a, b, c)
-#define M_FLD(a,b,c) M_OP2_IMM(48, a, b, c)
-#define M_FST(a,b,c) M_OP2_IMM(52, a, b, c)
-
-#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_MFCTR(a) M_OP3(31, 339, 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_MTCTR(a) M_OP3(31, 467, 0, 0, a, 9, 0)
-
-#define M_LDA(a,b,c) M_IADD_IMM(b, c, a)
-#define M_LDATST(a,b,c) M_ADDICTST(b, c, a)
-#define M_CLR(a) M_IADD_IMM(0, 0, a)
-
-/* function gen_resolvebranch **************************************************
-
- parameters: ip ... pointer to instruction after branch (void*)
- so ... offset of instruction after branch (s4)
- to ... offset of branch target (s4)
+ do { \
+ *((u4 *) cd->mcodeptr) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((i) & 0xffff)); \
+ cd->mcodeptr += 4; \
+ } while (0)
+
+#define M_INSTR_OP2_IMM_D(x) (((x) >> 21) & 0x1f )
+#define M_INSTR_OP2_IMM_A(x) (((x) >> 16) & 0x1f )
+#define M_INSTR_OP2_IMM_I(x) ( (x) & 0xffff)
+
+
+#define M_BMASK 0x03fffffc /* (((1 << 26) - 1) & ~3) */
+#define M_BCMASK 0x0000fffc /* (((1 << 16) - 1) & ~3) */
+
+#define M_B(LI,AA,LK) \
+ do { \
+ *((u4 *) cd->mcodeptr) = ((18 << 26) | ((((LI) * 4) + 4) & M_BMASK) | ((AA) << 1) | (LK)); \
+ cd->mcodeptr += 4; \
+ } while (0)
+
+#define M_BC(BO,BI,BD,AA,LK) \
+ do { \
+ *((u4 *) cd->mcodeptr) = ((16 << 26) | ((BO) << 21) | ((BI) << 16) | ((((BD) * 4) + 4) & M_BCMASK) | ((AA) << 1) | (LK)); \
+ cd->mcodeptr += 4; \
+ } while (0)
+
+
+/* machine instruction macros **************************************************
+
+ Argument order:
+
+ machine instruction macro:
+ Same order as for the mnemonic (d, s1, s2).
+
+ emit macro:
+ Same order as in the instruction encoding.
*******************************************************************************/
-#define gen_resolvebranch(ip,so,to) \
- *((s4*)(ip)-1)=(*((s4*)(ip)-1) & ~M_BRMASK) | (((s4)((to)-(so))+4)&((((*((s4*)(ip)-1)>>26)&63)==18)?M_BRAMASK:M_BRMASK))
+#define MI_and(rA,rS,rB) M_OP3(31, 28, 0, 0, rS, rA, rB)
+#define MI_anddot(rA,rS,rB) M_OP3(31, 28, 0, 1, rS, rA, rB)
+#define MI_andi(rA,rS,UIMM) M_OP2_IMM(28, rS, rA, UIMM)
+#define MI_lwarx(rD,rA,rB) M_OP3(31, 20, 0, 0, rD, rA, rB)
+#define MI_or(rA,rS,rB) M_OP3(31, 444, 0, 0, rS, rA, rB)
+#define MI_ordot(rA,rS,rB) M_OP3(31, 444, 0, 1, rS, rA, rB)
+#define MI_ori(rA,rS,UIMM) M_OP2_IMM(24, rS, rA, UIMM)
+#define MI_stwcxdot(rS,rA,rB) M_OP3(31, 150, 0, 1, rS, rA, rB)
+#define MI_subf(rD,rA,rB) M_OP3(31, 40, 0, 0, rD, rA, rB)
+#define MI_subfdot(rD,rA,rB) M_OP3(31, 40, 0, 1, rD, rA, rB)
+#define MI_sync M_OP3(31, 598, 0, 0, 0, 0, 0)
+
-#define SOFTNULLPTRCHECK /* soft null pointer check supported as option */
+/* HIR macros ******************************************************************
+ Argument order:
+
+ HIR macro:
+ Default usage in CACAO (s1, s2, d).
+
+ machine instruction macro:
+ Same order as for the mnemonic (d, s1, s2).
+
+*******************************************************************************/
-/* function prototypes */
-void docacheflush(u1 *p, long bytelen);
+/* 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)
#endif /* _CODEGEN_H */