/* src/vm/jit/powerpc/codegen.h - code generation macros and definitions for 32-bit PowerPC Copyright (C) 1996-2005, 2006, 2007, 2008 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO This file is part of CACAO. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef _CODEGEN_H #define _CODEGEN_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))); #define ALIGNCODENOP \ if ((s4) ((ptrint) cd->mcodeptr & 7)) { \ M_NOP; \ } /* branch defines *************************************************************/ #define BRANCH_NOPS \ do { \ if (CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) { \ M_NOP; \ M_NOP; \ } \ else { \ M_NOP; \ } \ } while (0) /* patcher defines ************************************************************/ #define PATCHER_CALL_SIZE 1 * 4 /* an instruction is 4-bytes long */ #define PATCHER_NOPS \ do { \ M_NOP; \ } while (0) /* stub defines ***************************************************************/ #define COMPILERSTUB_CODESIZE 1 * 4 /* macros to create code ******************************************************/ #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) \ 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) \ 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 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) /* 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). *******************************************************************************/ /* 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 */ /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: c * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: */