/* * Tiny Code Generator for QEMU * * Copyright (c) 2009 Ulrich Hecht * Copyright (c) 2009 Alexander Graf * Copyright (c) 2010 Richard Henderson * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "../tcg-ldst.c.inc" #include "../tcg-pool.c.inc" #include "elf.h" #define TCG_CT_CONST_S16 (1 << 8) #define TCG_CT_CONST_S32 (1 << 9) #define TCG_CT_CONST_S33 (1 << 10) #define TCG_CT_CONST_ZERO (1 << 11) #define TCG_CT_CONST_P32 (1 << 12) #define TCG_CT_CONST_INV (1 << 13) #define TCG_CT_CONST_INVRISBG (1 << 14) #define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 16) #define ALL_VECTOR_REGS MAKE_64BIT_MASK(32, 32) /* Several places within the instruction set 0 means "no register" rather than TCG_REG_R0. */ #define TCG_REG_NONE 0 /* A scratch register that may be be used throughout the backend. */ #define TCG_TMP0 TCG_REG_R1 #ifndef CONFIG_SOFTMMU #define TCG_GUEST_BASE_REG TCG_REG_R13 #endif /* All of the following instructions are prefixed with their instruction format, and are defined as 8- or 16-bit quantities, even when the two halves of the 16-bit quantity may appear 32 bits apart in the insn. This makes it easy to copy the values from the tables in Appendix B. */ typedef enum S390Opcode { RIL_AFI = 0xc209, RIL_AGFI = 0xc208, RIL_ALFI = 0xc20b, RIL_ALGFI = 0xc20a, RIL_BRASL = 0xc005, RIL_BRCL = 0xc004, RIL_CFI = 0xc20d, RIL_CGFI = 0xc20c, RIL_CLFI = 0xc20f, RIL_CLGFI = 0xc20e, RIL_CLRL = 0xc60f, RIL_CLGRL = 0xc60a, RIL_CRL = 0xc60d, RIL_CGRL = 0xc608, RIL_IIHF = 0xc008, RIL_IILF = 0xc009, RIL_LARL = 0xc000, RIL_LGFI = 0xc001, RIL_LGRL = 0xc408, RIL_LLIHF = 0xc00e, RIL_LLILF = 0xc00f, RIL_LRL = 0xc40d, RIL_MSFI = 0xc201, RIL_MSGFI = 0xc200, RIL_NIHF = 0xc00a, RIL_NILF = 0xc00b, RIL_OIHF = 0xc00c, RIL_OILF = 0xc00d, RIL_SLFI = 0xc205, RIL_SLGFI = 0xc204, RIL_XIHF = 0xc006, RIL_XILF = 0xc007, RI_AGHI = 0xa70b, RI_AHI = 0xa70a, RI_BRC = 0xa704, RI_CHI = 0xa70e, RI_CGHI = 0xa70f, RI_IIHH = 0xa500, RI_IIHL = 0xa501, RI_IILH = 0xa502, RI_IILL = 0xa503, RI_LGHI = 0xa709, RI_LLIHH = 0xa50c, RI_LLIHL = 0xa50d, RI_LLILH = 0xa50e, RI_LLILL = 0xa50f, RI_MGHI = 0xa70d, RI_MHI = 0xa70c, RI_NIHH = 0xa504, RI_NIHL = 0xa505, RI_NILH = 0xa506, RI_NILL = 0xa507, RI_OIHH = 0xa508, RI_OIHL = 0xa509, RI_OILH = 0xa50a, RI_OILL = 0xa50b, RI_TMLL = 0xa701, RIEb_CGRJ = 0xec64, RIEb_CLGRJ = 0xec65, RIEb_CLRJ = 0xec77, RIEb_CRJ = 0xec76, RIEc_CGIJ = 0xec7c, RIEc_CIJ = 0xec7e, RIEc_CLGIJ = 0xec7d, RIEc_CLIJ = 0xec7f, RIEf_RISBG = 0xec55, RIEg_LOCGHI = 0xec46, RRE_AGR = 0xb908, RRE_ALGR = 0xb90a, RRE_ALCR = 0xb998, RRE_ALCGR = 0xb988, RRE_ALGFR = 0xb91a, RRE_CGR = 0xb920, RRE_CLGR = 0xb921, RRE_DLGR = 0xb987, RRE_DLR = 0xb997, RRE_DSGFR = 0xb91d, RRE_DSGR = 0xb90d, RRE_FLOGR = 0xb983, RRE_LGBR = 0xb906, RRE_LCGR = 0xb903, RRE_LGFR = 0xb914, RRE_LGHR = 0xb907, RRE_LGR = 0xb904, RRE_LLGCR = 0xb984, RRE_LLGFR = 0xb916, RRE_LLGHR = 0xb985, RRE_LRVR = 0xb91f, RRE_LRVGR = 0xb90f, RRE_LTGR = 0xb902, RRE_MLGR = 0xb986, RRE_MSGR = 0xb90c, RRE_MSR = 0xb252, RRE_NGR = 0xb980, RRE_OGR = 0xb981, RRE_SGR = 0xb909, RRE_SLGR = 0xb90b, RRE_SLBR = 0xb999, RRE_SLBGR = 0xb989, RRE_XGR = 0xb982, RRFa_MGRK = 0xb9ec, RRFa_MSRKC = 0xb9fd, RRFa_MSGRKC = 0xb9ed, RRFa_NCRK = 0xb9f5, RRFa_NCGRK = 0xb9e5, RRFa_NNRK = 0xb974, RRFa_NNGRK = 0xb964, RRFa_NORK = 0xb976, RRFa_NOGRK = 0xb966, RRFa_NRK = 0xb9f4, RRFa_NGRK = 0xb9e4, RRFa_NXRK = 0xb977, RRFa_NXGRK = 0xb967, RRFa_OCRK = 0xb975, RRFa_OCGRK = 0xb965, RRFa_ORK = 0xb9f6, RRFa_OGRK = 0xb9e6, RRFa_SRK = 0xb9f9, RRFa_SGRK = 0xb9e9, RRFa_SLRK = 0xb9fb, RRFa_SLGRK = 0xb9eb, RRFa_XRK = 0xb9f7, RRFa_XGRK = 0xb9e7, RRFam_SELGR = 0xb9e3, RRFc_LOCR = 0xb9f2, RRFc_LOCGR = 0xb9e2, RRFc_POPCNT = 0xb9e1, RR_AR = 0x1a, RR_ALR = 0x1e, RR_BASR = 0x0d, RR_BCR = 0x07, RR_CLR = 0x15, RR_CR = 0x19, RR_DR = 0x1d, RR_LCR = 0x13, RR_LR = 0x18, RR_LTR = 0x12, RR_NR = 0x14, RR_OR = 0x16, RR_SR = 0x1b, RR_SLR = 0x1f, RR_XR = 0x17, RSY_RLL = 0xeb1d, RSY_RLLG = 0xeb1c, RSY_SLLG = 0xeb0d, RSY_SLLK = 0xebdf, RSY_SRAG = 0xeb0a, RSY_SRAK = 0xebdc, RSY_SRLG = 0xeb0c, RSY_SRLK = 0xebde, RS_SLL = 0x89, RS_SRA = 0x8a, RS_SRL = 0x88, RXY_AG = 0xe308, RXY_AY = 0xe35a, RXY_CG = 0xe320, RXY_CLG = 0xe321, RXY_CLY = 0xe355, RXY_CY = 0xe359, RXY_LAY = 0xe371, RXY_LB = 0xe376, RXY_LG = 0xe304, RXY_LGB = 0xe377, RXY_LGF = 0xe314, RXY_LGH = 0xe315, RXY_LHY = 0xe378, RXY_LLGC = 0xe390, RXY_LLGF = 0xe316, RXY_LLGH = 0xe391, RXY_LMG = 0xeb04, RXY_LPQ = 0xe38f, RXY_LRV = 0xe31e, RXY_LRVG = 0xe30f, RXY_LRVH = 0xe31f, RXY_LY = 0xe358, RXY_NG = 0xe380, RXY_OG = 0xe381, RXY_STCY = 0xe372, RXY_STG = 0xe324, RXY_STHY = 0xe370, RXY_STMG = 0xeb24, RXY_STPQ = 0xe38e, RXY_STRV = 0xe33e, RXY_STRVG = 0xe32f, RXY_STRVH = 0xe33f, RXY_STY = 0xe350, RXY_XG = 0xe382, RX_A = 0x5a, RX_C = 0x59, RX_L = 0x58, RX_LA = 0x41, RX_LH = 0x48, RX_ST = 0x50, RX_STC = 0x42, RX_STH = 0x40, VRIa_VGBM = 0xe744, VRIa_VREPI = 0xe745, VRIb_VGM = 0xe746, VRIc_VREP = 0xe74d, VRRa_VLC = 0xe7de, VRRa_VLP = 0xe7df, VRRa_VLR = 0xe756, VRRc_VA = 0xe7f3, VRRc_VCEQ = 0xe7f8, /* we leave the m5 cs field 0 */ VRRc_VCH = 0xe7fb, /* " */ VRRc_VCHL = 0xe7f9, /* " */ VRRc_VERLLV = 0xe773, VRRc_VESLV = 0xe770, VRRc_VESRAV = 0xe77a, VRRc_VESRLV = 0xe778, VRRc_VML = 0xe7a2, VRRc_VMN = 0xe7fe, VRRc_VMNL = 0xe7fc, VRRc_VMX = 0xe7ff, VRRc_VMXL = 0xe7fd, VRRc_VN = 0xe768, VRRc_VNC = 0xe769, VRRc_VNN = 0xe76e, VRRc_VNO = 0xe76b, VRRc_VNX = 0xe76c, VRRc_VO = 0xe76a, VRRc_VOC = 0xe76f, VRRc_VPKS = 0xe797, /* we leave the m5 cs field 0 */ VRRc_VS = 0xe7f7, VRRa_VUPH = 0xe7d7, VRRa_VUPL = 0xe7d6, VRRc_VX = 0xe76d, VRRe_VSEL = 0xe78d, VRRf_VLVGP = 0xe762, VRSa_VERLL = 0xe733, VRSa_VESL = 0xe730, VRSa_VESRA = 0xe73a, VRSa_VESRL = 0xe738, VRSb_VLVG = 0xe722, VRSc_VLGV = 0xe721, VRX_VL = 0xe706, VRX_VLLEZ = 0xe704, VRX_VLREP = 0xe705, VRX_VST = 0xe70e, VRX_VSTEF = 0xe70b, VRX_VSTEG = 0xe70a, NOP = 0x0707, } S390Opcode; #ifdef CONFIG_DEBUG_TCG static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%v0", "%v1", "%v2", "%v3", "%v4", "%v5", "%v6", "%v7", "%v8", "%v9", "%v10", "%v11", "%v12", "%v13", "%v14", "%v15", "%v16", "%v17", "%v18", "%v19", "%v20", "%v21", "%v22", "%v23", "%v24", "%v25", "%v26", "%v27", "%v28", "%v29", "%v30", "%v31", }; #endif /* Since R6 is a potential argument register, choose it last of the call-saved registers. Likewise prefer the call-clobbered registers in reverse order to maximize the chance of avoiding the arguments. */ static const int tcg_target_reg_alloc_order[] = { /* Call saved registers. */ TCG_REG_R13, TCG_REG_R12, TCG_REG_R11, TCG_REG_R10, TCG_REG_R9, TCG_REG_R8, TCG_REG_R7, TCG_REG_R6, /* Call clobbered registers. */ TCG_REG_R14, TCG_REG_R0, TCG_REG_R1, /* Argument registers, in reverse order of allocation. */ TCG_REG_R5, TCG_REG_R4, TCG_REG_R3, TCG_REG_R2, /* V8-V15 are call saved, and omitted. */ TCG_REG_V0, TCG_REG_V1, TCG_REG_V2, TCG_REG_V3, TCG_REG_V4, TCG_REG_V5, TCG_REG_V6, TCG_REG_V7, TCG_REG_V16, TCG_REG_V17, TCG_REG_V18, TCG_REG_V19, TCG_REG_V20, TCG_REG_V21, TCG_REG_V22, TCG_REG_V23, TCG_REG_V24, TCG_REG_V25, TCG_REG_V26, TCG_REG_V27, TCG_REG_V28, TCG_REG_V29, TCG_REG_V30, TCG_REG_V31, }; static const int tcg_target_call_iarg_regs[] = { TCG_REG_R2, TCG_REG_R3, TCG_REG_R4, TCG_REG_R5, TCG_REG_R6, }; static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot) { tcg_debug_assert(kind == TCG_CALL_RET_NORMAL); tcg_debug_assert(slot == 0); return TCG_REG_R2; } #define S390_CC_EQ 8 #define S390_CC_LT 4 #define S390_CC_GT 2 #define S390_CC_OV 1 #define S390_CC_NE (S390_CC_LT | S390_CC_GT) #define S390_CC_LE (S390_CC_LT | S390_CC_EQ) #define S390_CC_GE (S390_CC_GT | S390_CC_EQ) #define S390_CC_NEVER 0 #define S390_CC_ALWAYS 15 /* Condition codes that result from a COMPARE and COMPARE LOGICAL. */ static const uint8_t tcg_cond_to_s390_cond[] = { [TCG_COND_EQ] = S390_CC_EQ, [TCG_COND_NE] = S390_CC_NE, [TCG_COND_LT] = S390_CC_LT, [TCG_COND_LE] = S390_CC_LE, [TCG_COND_GT] = S390_CC_GT, [TCG_COND_GE] = S390_CC_GE, [TCG_COND_LTU] = S390_CC_LT, [TCG_COND_LEU] = S390_CC_LE, [TCG_COND_GTU] = S390_CC_GT, [TCG_COND_GEU] = S390_CC_GE, }; /* Condition codes that result from a LOAD AND TEST. Here, we have no unsigned instruction variation, however since the test is vs zero we can re-map the outcomes appropriately. */ static const uint8_t tcg_cond_to_ltr_cond[] = { [TCG_COND_EQ] = S390_CC_EQ, [TCG_COND_NE] = S390_CC_NE, [TCG_COND_LT] = S390_CC_LT, [TCG_COND_LE] = S390_CC_LE, [TCG_COND_GT] = S390_CC_GT, [TCG_COND_GE] = S390_CC_GE, [TCG_COND_LTU] = S390_CC_NEVER, [TCG_COND_LEU] = S390_CC_EQ, [TCG_COND_GTU] = S390_CC_NE, [TCG_COND_GEU] = S390_CC_ALWAYS, }; static const tcg_insn_unit *tb_ret_addr; uint64_t s390_facilities[3]; static inline bool is_general_reg(TCGReg r) { return r <= TCG_REG_R15; } static inline bool is_vector_reg(TCGReg r) { return r >= TCG_REG_V0 && r <= TCG_REG_V31; } static bool patch_reloc(tcg_insn_unit *src_rw, int type, intptr_t value, intptr_t addend) { const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); intptr_t pcrel2; uint32_t old; value += addend; pcrel2 = (tcg_insn_unit *)value - src_rx; switch (type) { case R_390_PC16DBL: if (pcrel2 == (int16_t)pcrel2) { tcg_patch16(src_rw, pcrel2); return true; } break; case R_390_PC32DBL: if (pcrel2 == (int32_t)pcrel2) { tcg_patch32(src_rw, pcrel2); return true; } break; case R_390_20: if (value == sextract64(value, 0, 20)) { old = *(uint32_t *)src_rw & 0xf00000ff; old |= ((value & 0xfff) << 16) | ((value & 0xff000) >> 4); tcg_patch32(src_rw, old); return true; } break; default: g_assert_not_reached(); } return false; } static int is_const_p16(uint64_t val) { for (int i = 0; i < 4; ++i) { uint64_t mask = 0xffffull << (i * 16); if ((val & ~mask) == 0) { return i; } } return -1; } static int is_const_p32(uint64_t val) { if ((val & 0xffffffff00000000ull) == 0) { return 0; } if ((val & 0x00000000ffffffffull) == 0) { return 1; } return -1; } /* * Accept bit patterns like these: * 0....01....1 * 1....10....0 * 1..10..01..1 * 0..01..10..0 * Copied from gcc sources. */ static bool risbg_mask(uint64_t c) { uint64_t lsb; /* We don't change the number of transitions by inverting, so make sure we start with the LSB zero. */ if (c & 1) { c = ~c; } /* Reject all zeros or all ones. */ if (c == 0) { return false; } /* Find the first transition. */ lsb = c & -c; /* Invert to look for a second transition. */ c = ~c; /* Erase the first transition. */ c &= -lsb; /* Find the second transition, if any. */ lsb = c & -c; /* Match if all the bits are 1's, or if c is zero. */ return c == -lsb; } /* Test if a constant matches the constraint. */ static bool tcg_target_const_match(int64_t val, TCGType type, int ct) { if (ct & TCG_CT_CONST) { return 1; } if (type == TCG_TYPE_I32) { val = (int32_t)val; } /* The following are mutually exclusive. */ if (ct & TCG_CT_CONST_S16) { return val == (int16_t)val; } else if (ct & TCG_CT_CONST_S32) { return val == (int32_t)val; } else if (ct & TCG_CT_CONST_S33) { return val >= -0xffffffffll && val <= 0xffffffffll; } else if (ct & TCG_CT_CONST_ZERO) { return val == 0; } if (ct & TCG_CT_CONST_INV) { val = ~val; } /* * Note that is_const_p16 is a subset of is_const_p32, * so we don't need both constraints. */ if ((ct & TCG_CT_CONST_P32) && is_const_p32(val) >= 0) { return true; } if ((ct & TCG_CT_CONST_INVRISBG) && risbg_mask(~val)) { return true; } return 0; } /* Emit instructions according to the given instruction format. */ static void tcg_out_insn_RR(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2) { tcg_out16(s, (op << 8) | (r1 << 4) | r2); } static void tcg_out_insn_RRE(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2) { tcg_out32(s, (op << 16) | (r1 << 4) | r2); } /* RRF-a without the m4 field */ static void tcg_out_insn_RRFa(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2, TCGReg r3) { tcg_out32(s, (op << 16) | (r3 << 12) | (r1 << 4) | r2); } /* RRF-a with the m4 field */ static void tcg_out_insn_RRFam(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2, TCGReg r3, int m4) { tcg_out32(s, (op << 16) | (r3 << 12) | (m4 << 8) | (r1 << 4) | r2); } static void tcg_out_insn_RRFc(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2, int m3) { tcg_out32(s, (op << 16) | (m3 << 12) | (r1 << 4) | r2); } static void tcg_out_insn_RI(TCGContext *s, S390Opcode op, TCGReg r1, int i2) { tcg_out32(s, (op << 16) | (r1 << 20) | (i2 & 0xffff)); } static void tcg_out_insn_RIEg(TCGContext *s, S390Opcode op, TCGReg r1, int i2, int m3) { tcg_out16(s, (op & 0xff00) | (r1 << 4) | m3); tcg_out32(s, (i2 << 16) | (op & 0xff)); } static void tcg_out_insn_RIL(TCGContext *s, S390Opcode op, TCGReg r1, int i2) { tcg_out16(s, op | (r1 << 4)); tcg_out32(s, i2); } static void tcg_out_insn_RS(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg b2, TCGReg r3, int disp) { tcg_out32(s, (op << 24) | (r1 << 20) | (r3 << 16) | (b2 << 12) | (disp & 0xfff)); } static void tcg_out_insn_RSY(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg b2, TCGReg r3, int disp) { tcg_out16(s, (op & 0xff00) | (r1 << 4) | r3); tcg_out32(s, (op & 0xff) | (b2 << 28) | ((disp & 0xfff) << 16) | ((disp & 0xff000) >> 4)); } #define tcg_out_insn_RX tcg_out_insn_RS #define tcg_out_insn_RXY tcg_out_insn_RSY static int RXB(TCGReg v1, TCGReg v2, TCGReg v3, TCGReg v4) { /* * Shift bit 4 of each regno to its corresponding bit of RXB. * RXB itself begins at bit 8 of the instruction so 8 - 4 = 4 * is the left-shift of the 4th operand. */ return ((v1 & 0x10) << (4 + 3)) | ((v2 & 0x10) << (4 + 2)) | ((v3 & 0x10) << (4 + 1)) | ((v4 & 0x10) << (4 + 0)); } static void tcg_out_insn_VRIa(TCGContext *s, S390Opcode op, TCGReg v1, uint16_t i2, int m3) { tcg_debug_assert(is_vector_reg(v1)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4)); tcg_out16(s, i2); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0) | (m3 << 12)); } static void tcg_out_insn_VRIb(TCGContext *s, S390Opcode op, TCGReg v1, uint8_t i2, uint8_t i3, int m4) { tcg_debug_assert(is_vector_reg(v1)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4)); tcg_out16(s, (i2 << 8) | (i3 & 0xff)); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0) | (m4 << 12)); } static void tcg_out_insn_VRIc(TCGContext *s, S390Opcode op, TCGReg v1, uint16_t i2, TCGReg v3, int m4) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(is_vector_reg(v3)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | (v3 & 0xf)); tcg_out16(s, i2); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, v3, 0) | (m4 << 12)); } static void tcg_out_insn_VRRa(TCGContext *s, S390Opcode op, TCGReg v1, TCGReg v2, int m3) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(is_vector_reg(v2)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | (v2 & 0xf)); tcg_out32(s, (op & 0x00ff) | RXB(v1, v2, 0, 0) | (m3 << 12)); } static void tcg_out_insn_VRRc(TCGContext *s, S390Opcode op, TCGReg v1, TCGReg v2, TCGReg v3, int m4) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(is_vector_reg(v2)); tcg_debug_assert(is_vector_reg(v3)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | (v2 & 0xf)); tcg_out16(s, v3 << 12); tcg_out16(s, (op & 0x00ff) | RXB(v1, v2, v3, 0) | (m4 << 12)); } static void tcg_out_insn_VRRe(TCGContext *s, S390Opcode op, TCGReg v1, TCGReg v2, TCGReg v3, TCGReg v4) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(is_vector_reg(v2)); tcg_debug_assert(is_vector_reg(v3)); tcg_debug_assert(is_vector_reg(v4)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | (v2 & 0xf)); tcg_out16(s, v3 << 12); tcg_out16(s, (op & 0x00ff) | RXB(v1, v2, v3, v4) | (v4 << 12)); } static void tcg_out_insn_VRRf(TCGContext *s, S390Opcode op, TCGReg v1, TCGReg r2, TCGReg r3) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(is_general_reg(r2)); tcg_debug_assert(is_general_reg(r3)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | r2); tcg_out16(s, r3 << 12); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0)); } static void tcg_out_insn_VRSa(TCGContext *s, S390Opcode op, TCGReg v1, intptr_t d2, TCGReg b2, TCGReg v3, int m4) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(d2 >= 0 && d2 <= 0xfff); tcg_debug_assert(is_general_reg(b2)); tcg_debug_assert(is_vector_reg(v3)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | (v3 & 0xf)); tcg_out16(s, b2 << 12 | d2); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, v3, 0) | (m4 << 12)); } static void tcg_out_insn_VRSb(TCGContext *s, S390Opcode op, TCGReg v1, intptr_t d2, TCGReg b2, TCGReg r3, int m4) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(d2 >= 0 && d2 <= 0xfff); tcg_debug_assert(is_general_reg(b2)); tcg_debug_assert(is_general_reg(r3)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | r3); tcg_out16(s, b2 << 12 | d2); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0) | (m4 << 12)); } static void tcg_out_insn_VRSc(TCGContext *s, S390Opcode op, TCGReg r1, intptr_t d2, TCGReg b2, TCGReg v3, int m4) { tcg_debug_assert(is_general_reg(r1)); tcg_debug_assert(d2 >= 0 && d2 <= 0xfff); tcg_debug_assert(is_general_reg(b2)); tcg_debug_assert(is_vector_reg(v3)); tcg_out16(s, (op & 0xff00) | (r1 << 4) | (v3 & 0xf)); tcg_out16(s, b2 << 12 | d2); tcg_out16(s, (op & 0x00ff) | RXB(0, 0, v3, 0) | (m4 << 12)); } static void tcg_out_insn_VRX(TCGContext *s, S390Opcode op, TCGReg v1, TCGReg b2, TCGReg x2, intptr_t d2, int m3) { tcg_debug_assert(is_vector_reg(v1)); tcg_debug_assert(d2 >= 0 && d2 <= 0xfff); tcg_debug_assert(is_general_reg(x2)); tcg_debug_assert(is_general_reg(b2)); tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | x2); tcg_out16(s, (b2 << 12) | d2); tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0) | (m3 << 12)); } /* Emit an opcode with "type-checking" of the format. */ #define tcg_out_insn(S, FMT, OP, ...) \ glue(tcg_out_insn_,FMT)(S, glue(glue(FMT,_),OP), ## __VA_ARGS__) /* emit 64-bit shifts */ static void tcg_out_sh64(TCGContext* s, S390Opcode op, TCGReg dest, TCGReg src, TCGReg sh_reg, int sh_imm) { tcg_out_insn_RSY(s, op, dest, sh_reg, src, sh_imm); } /* emit 32-bit shifts */ static void tcg_out_sh32(TCGContext* s, S390Opcode op, TCGReg dest, TCGReg sh_reg, int sh_imm) { tcg_out_insn_RS(s, op, dest, sh_reg, 0, sh_imm); } static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg dst, TCGReg src) { if (src == dst) { return true; } switch (type) { case TCG_TYPE_I32: if (likely(is_general_reg(dst) && is_general_reg(src))) { tcg_out_insn(s, RR, LR, dst, src); break; } /* fallthru */ case TCG_TYPE_I64: if (likely(is_general_reg(dst))) { if (likely(is_general_reg(src))) { tcg_out_insn(s, RRE, LGR, dst, src); } else { tcg_out_insn(s, VRSc, VLGV, dst, 0, 0, src, 3); } break; } else if (is_general_reg(src)) { tcg_out_insn(s, VRSb, VLVG, dst, 0, 0, src, 3); break; } /* fallthru */ case TCG_TYPE_V64: case TCG_TYPE_V128: tcg_out_insn(s, VRRa, VLR, dst, src, 0); break; default: g_assert_not_reached(); } return true; } static const S390Opcode li_insns[4] = { RI_LLILL, RI_LLILH, RI_LLIHL, RI_LLIHH }; static const S390Opcode oi_insns[4] = { RI_OILL, RI_OILH, RI_OIHL, RI_OIHH }; static const S390Opcode lif_insns[2] = { RIL_LLILF, RIL_LLIHF, }; /* load a register with an immediate value */ static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret, tcg_target_long sval) { tcg_target_ulong uval = sval; ptrdiff_t pc_off; int i; if (type == TCG_TYPE_I32) { uval = (uint32_t)sval; sval = (int32_t)sval; } /* Try all 32-bit insns that can load it in one go. */ if (sval >= -0x8000 && sval < 0x8000) { tcg_out_insn(s, RI, LGHI, ret, sval); return; } i = is_const_p16(uval); if (i >= 0) { tcg_out_insn_RI(s, li_insns[i], ret, uval >> (i * 16)); return; } /* Try all 48-bit insns that can load it in one go. */ if (sval == (int32_t)sval) { tcg_out_insn(s, RIL, LGFI, ret, sval); return; } i = is_const_p32(uval); if (i >= 0) { tcg_out_insn_RIL(s, lif_insns[i], ret, uval >> (i * 32)); return; } /* Try for PC-relative address load. For odd addresses, add one. */ pc_off = tcg_pcrel_diff(s, (void *)sval) >> 1; if (pc_off == (int32_t)pc_off) { tcg_out_insn(s, RIL, LARL, ret, pc_off); if (sval & 1) { tcg_out_insn(s, RI, AGHI, ret, 1); } return; } /* Otherwise, load it by parts. */ i = is_const_p16((uint32_t)uval); if (i >= 0) { tcg_out_insn_RI(s, li_insns[i], ret, uval >> (i * 16)); } else { tcg_out_insn(s, RIL, LLILF, ret, uval); } uval >>= 32; i = is_const_p16(uval); if (i >= 0) { tcg_out_insn_RI(s, oi_insns[i + 2], ret, uval >> (i * 16)); } else { tcg_out_insn(s, RIL, OIHF, ret, uval); } } /* Emit a load/store type instruction. Inputs are: DATA: The register to be loaded or stored. BASE+OFS: The effective address. OPC_RX: If the operation has an RX format opcode (e.g. STC), otherwise 0. OPC_RXY: The RXY format opcode for the operation (e.g. STCY). */ static void tcg_out_mem(TCGContext *s, S390Opcode opc_rx, S390Opcode opc_rxy, TCGReg data, TCGReg base, TCGReg index, tcg_target_long ofs) { if (ofs < -0x80000 || ofs >= 0x80000) { /* Combine the low 20 bits of the offset with the actual load insn; the high 44 bits must come from an immediate load. */ tcg_target_long low = ((ofs & 0xfffff) ^ 0x80000) - 0x80000; tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs - low); ofs = low; /* If we were already given an index register, add it in. */ if (index != TCG_REG_NONE) { tcg_out_insn(s, RRE, AGR, TCG_TMP0, index); } index = TCG_TMP0; } if (opc_rx && ofs >= 0 && ofs < 0x1000) { tcg_out_insn_RX(s, opc_rx, data, base, index, ofs); } else { tcg_out_insn_RXY(s, opc_rxy, data, base, index, ofs); } } static void tcg_out_vrx_mem(TCGContext *s, S390Opcode opc_vrx, TCGReg data, TCGReg base, TCGReg index, tcg_target_long ofs, int m3) { if (ofs < 0 || ofs >= 0x1000) { if (ofs >= -0x80000 && ofs < 0x80000) { tcg_out_insn(s, RXY, LAY, TCG_TMP0, base, index, ofs); base = TCG_TMP0; index = TCG_REG_NONE; ofs = 0; } else { tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs); if (index != TCG_REG_NONE) { tcg_out_insn(s, RRE, AGR, TCG_TMP0, index); } index = TCG_TMP0; ofs = 0; } } tcg_out_insn_VRX(s, opc_vrx, data, base, index, ofs, m3); } /* load data without address translation or endianness conversion */ static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data, TCGReg base, intptr_t ofs) { switch (type) { case TCG_TYPE_I32: if (likely(is_general_reg(data))) { tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs); break; } tcg_out_vrx_mem(s, VRX_VLLEZ, data, base, TCG_REG_NONE, ofs, MO_32); break; case TCG_TYPE_I64: if (likely(is_general_reg(data))) { tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs); break; } /* fallthru */ case TCG_TYPE_V64: tcg_out_vrx_mem(s, VRX_VLLEZ, data, base, TCG_REG_NONE, ofs, MO_64); break; case TCG_TYPE_V128: /* Hint quadword aligned. */ tcg_out_vrx_mem(s, VRX_VL, data, base, TCG_REG_NONE, ofs, 4); break; default: g_assert_not_reached(); } } static void tcg_out_st(TCGContext *s, TCGType type, TCGReg data, TCGReg base, intptr_t ofs) { switch (type) { case TCG_TYPE_I32: if (likely(is_general_reg(data))) { tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs); } else { tcg_out_vrx_mem(s, VRX_VSTEF, data, base, TCG_REG_NONE, ofs, 1); } break; case TCG_TYPE_I64: if (likely(is_general_reg(data))) { tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs); break; } /* fallthru */ case TCG_TYPE_V64: tcg_out_vrx_mem(s, VRX_VSTEG, data, base, TCG_REG_NONE, ofs, 0); break; case TCG_TYPE_V128: /* Hint quadword aligned. */ tcg_out_vrx_mem(s, VRX_VST, data, base, TCG_REG_NONE, ofs, 4); break; default: g_assert_not_reached(); } } static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, TCGReg base, intptr_t ofs) { return false; } static bool tcg_out_xchg(TCGContext *s, TCGType type, TCGReg r1, TCGReg r2) { return false; } static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs, tcg_target_long imm) { /* This function is only used for passing structs by reference. */ tcg_out_mem(s, RX_LA, RXY_LAY, rd, rs, TCG_REG_NONE, imm); } static inline void tcg_out_risbg(TCGContext *s, TCGReg dest, TCGReg src, int msb, int lsb, int ofs, int z) { /* Format RIE-f */ tcg_out16(s, (RIEf_RISBG & 0xff00) | (dest << 4) | src); tcg_out16(s, (msb << 8) | (z << 7) | lsb); tcg_out16(s, (ofs << 8) | (RIEf_RISBG & 0xff)); } static void tcg_out_ext8s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) { tcg_out_insn(s, RRE, LGBR, dest, src); } static void tcg_out_ext8u(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_insn(s, RRE, LLGCR, dest, src); } static void tcg_out_ext16s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) { tcg_out_insn(s, RRE, LGHR, dest, src); } static void tcg_out_ext16u(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_insn(s, RRE, LLGHR, dest, src); } static void tcg_out_ext32s(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_insn(s, RRE, LGFR, dest, src); } static void tcg_out_ext32u(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_insn(s, RRE, LLGFR, dest, src); } static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_ext32s(s, dest, src); } static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_ext32u(s, dest, src); } static void tcg_out_extrl_i64_i32(TCGContext *s, TCGReg dest, TCGReg src) { tcg_out_mov(s, TCG_TYPE_I32, dest, src); } static void tgen_andi_risbg(TCGContext *s, TCGReg out, TCGReg in, uint64_t val) { int msb, lsb; if ((val & 0x8000000000000001ull) == 0x8000000000000001ull) { /* Achieve wraparound by swapping msb and lsb. */ msb = 64 - ctz64(~val); lsb = clz64(~val) - 1; } else { msb = clz64(val); lsb = 63 - ctz64(val); } tcg_out_risbg(s, out, in, msb, lsb, 0, 1); } static void tgen_andi(TCGContext *s, TCGType type, TCGReg dest, uint64_t val) { static const S390Opcode ni_insns[4] = { RI_NILL, RI_NILH, RI_NIHL, RI_NIHH }; static const S390Opcode nif_insns[2] = { RIL_NILF, RIL_NIHF }; uint64_t valid = (type == TCG_TYPE_I32 ? 0xffffffffull : -1ull); int i; /* Look for the zero-extensions. */ if ((val & valid) == 0xffffffff) { tcg_out_ext32u(s, dest, dest); return; } if ((val & valid) == 0xff) { tcg_out_ext8u(s, dest, dest); return; } if ((val & valid) == 0xffff) { tcg_out_ext16u(s, dest, dest); return; } i = is_const_p16(~val & valid); if (i >= 0) { tcg_out_insn_RI(s, ni_insns[i], dest, val >> (i * 16)); return; } i = is_const_p32(~val & valid); tcg_debug_assert(i == 0 || type != TCG_TYPE_I32); if (i >= 0) { tcg_out_insn_RIL(s, nif_insns[i], dest, val >> (i * 32)); return; } if (risbg_mask(val)) { tgen_andi_risbg(s, dest, dest, val); return; } g_assert_not_reached(); } static void tgen_ori(TCGContext *s, TCGReg dest, uint64_t val) { static const S390Opcode oif_insns[2] = { RIL_OILF, RIL_OIHF }; int i; i = is_const_p16(val); if (i >= 0) { tcg_out_insn_RI(s, oi_insns[i], dest, val >> (i * 16)); return; } i = is_const_p32(val); if (i >= 0) { tcg_out_insn_RIL(s, oif_insns[i], dest, val >> (i * 32)); return; } g_assert_not_reached(); } static void tgen_xori(TCGContext *s, TCGReg dest, uint64_t val) { switch (is_const_p32(val)) { case 0: tcg_out_insn(s, RIL, XILF, dest, val); break; case 1: tcg_out_insn(s, RIL, XIHF, dest, val >> 32); break; default: g_assert_not_reached(); } } static int tgen_cmp2(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, TCGArg c2, bool c2const, bool need_carry, int *inv_cc) { bool is_unsigned = is_unsigned_cond(c); TCGCond inv_c = tcg_invert_cond(c); S390Opcode op; if (c2const) { if (c2 == 0) { if (!(is_unsigned && need_carry)) { if (type == TCG_TYPE_I32) { tcg_out_insn(s, RR, LTR, r1, r1); } else { tcg_out_insn(s, RRE, LTGR, r1, r1); } *inv_cc = tcg_cond_to_ltr_cond[inv_c]; return tcg_cond_to_ltr_cond[c]; } } if (!is_unsigned && c2 == (int16_t)c2) { op = (type == TCG_TYPE_I32 ? RI_CHI : RI_CGHI); tcg_out_insn_RI(s, op, r1, c2); goto exit; } if (type == TCG_TYPE_I32) { op = (is_unsigned ? RIL_CLFI : RIL_CFI); tcg_out_insn_RIL(s, op, r1, c2); goto exit; } /* * Constraints are for a signed 33-bit operand, which is a * convenient superset of this signed/unsigned test. */ if (c2 == (is_unsigned ? (TCGArg)(uint32_t)c2 : (TCGArg)(int32_t)c2)) { op = (is_unsigned ? RIL_CLGFI : RIL_CGFI); tcg_out_insn_RIL(s, op, r1, c2); goto exit; } /* Load everything else into a register. */ tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, c2); c2 = TCG_TMP0; } if (type == TCG_TYPE_I32) { op = (is_unsigned ? RR_CLR : RR_CR); tcg_out_insn_RR(s, op, r1, c2); } else { op = (is_unsigned ? RRE_CLGR : RRE_CGR); tcg_out_insn_RRE(s, op, r1, c2); } exit: *inv_cc = tcg_cond_to_s390_cond[inv_c]; return tcg_cond_to_s390_cond[c]; } static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, TCGArg c2, bool c2const, bool need_carry) { int inv_cc; return tgen_cmp2(s, type, c, r1, c2, c2const, need_carry, &inv_cc); } static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond, TCGReg dest, TCGReg c1, TCGArg c2, int c2const) { int cc; /* With LOC2, we can always emit the minimum 3 insns. */ if (HAVE_FACILITY(LOAD_ON_COND2)) { /* Emit: d = 0, d = (cc ? 1 : d). */ cc = tgen_cmp(s, type, cond, c1, c2, c2const, false); tcg_out_movi(s, TCG_TYPE_I64, dest, 0); tcg_out_insn(s, RIEg, LOCGHI, dest, 1, cc); return; } restart: switch (cond) { case TCG_COND_NE: /* X != 0 is X > 0. */ if (c2const && c2 == 0) { cond = TCG_COND_GTU; } else { break; } /* fallthru */ case TCG_COND_GTU: case TCG_COND_GT: /* The result of a compare has CC=2 for GT and CC=3 unused. ADD LOGICAL WITH CARRY considers (CC & 2) the carry bit. */ tgen_cmp(s, type, cond, c1, c2, c2const, true); tcg_out_movi(s, type, dest, 0); tcg_out_insn(s, RRE, ALCGR, dest, dest); return; case TCG_COND_EQ: /* X == 0 is X <= 0. */ if (c2const && c2 == 0) { cond = TCG_COND_LEU; } else { break; } /* fallthru */ case TCG_COND_LEU: case TCG_COND_LE: /* As above, but we're looking for borrow, or !carry. The second insn computes d - d - borrow, or -1 for true and 0 for false. So we must mask to 1 bit afterward. */ tgen_cmp(s, type, cond, c1, c2, c2const, true); tcg_out_insn(s, RRE, SLBGR, dest, dest); tgen_andi(s, type, dest, 1); return; case TCG_COND_GEU: case TCG_COND_LTU: case TCG_COND_LT: case TCG_COND_GE: /* Swap operands so that we can use LEU/GTU/GT/LE. */ if (!c2const) { TCGReg t = c1; c1 = c2; c2 = t; cond = tcg_swap_cond(cond); goto restart; } break; default: g_assert_not_reached(); } cc = tgen_cmp(s, type, cond, c1, c2, c2const, false); /* Emit: d = 0, t = 1, d = (cc ? t : d). */ tcg_out_movi(s, TCG_TYPE_I64, dest, 0); tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, 1); tcg_out_insn(s, RRFc, LOCGR, dest, TCG_TMP0, cc); } static void tgen_movcond_int(TCGContext *s, TCGType type, TCGReg dest, TCGArg v3, int v3const, TCGReg v4, int cc, int inv_cc) { TCGReg src; if (v3const) { if (dest == v4) { if (HAVE_FACILITY(LOAD_ON_COND2)) { /* Emit: if (cc) dest = v3. */ tcg_out_insn(s, RIEg, LOCGHI, dest, v3, cc); return; } tcg_out_insn(s, RI, LGHI, TCG_TMP0, v3); src = TCG_TMP0; } else { /* LGR+LOCGHI is larger than LGHI+LOCGR. */ tcg_out_insn(s, RI, LGHI, dest, v3); cc = inv_cc; src = v4; } } else { if (HAVE_FACILITY(MISC_INSN_EXT3)) { /* Emit: dest = cc ? v3 : v4. */ tcg_out_insn(s, RRFam, SELGR, dest, v3, v4, cc); return; } if (dest == v4) { src = v3; } else { tcg_out_mov(s, type, dest, v3); cc = inv_cc; src = v4; } } /* Emit: if (cc) dest = src. */ tcg_out_insn(s, RRFc, LOCGR, dest, src, cc); } static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest, TCGReg c1, TCGArg c2, int c2const, TCGArg v3, int v3const, TCGReg v4) { int cc, inv_cc; cc = tgen_cmp2(s, type, c, c1, c2, c2const, false, &inv_cc); tgen_movcond_int(s, type, dest, v3, v3const, v4, cc, inv_cc); } static void tgen_clz(TCGContext *s, TCGReg dest, TCGReg a1, TCGArg a2, int a2const) { /* Since this sets both R and R+1, we have no choice but to store the result into R0, allowing R1 == TCG_TMP0 to be clobbered as well. */ QEMU_BUILD_BUG_ON(TCG_TMP0 != TCG_REG_R1); tcg_out_insn(s, RRE, FLOGR, TCG_REG_R0, a1); if (a2const && a2 == 64) { tcg_out_mov(s, TCG_TYPE_I64, dest, TCG_REG_R0); return; } /* * Conditions from FLOGR are: * 2 -> one bit found * 8 -> no one bit found */ tgen_movcond_int(s, TCG_TYPE_I64, dest, a2, a2const, TCG_REG_R0, 8, 2); } static void tgen_ctpop(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) { /* With MIE3, and bit 0 of m4 set, we get the complete result. */ if (HAVE_FACILITY(MISC_INSN_EXT3)) { if (type == TCG_TYPE_I32) { tcg_out_ext32u(s, dest, src); src = dest; } tcg_out_insn(s, RRFc, POPCNT, dest, src, 8); return; } /* Without MIE3, each byte gets the count of bits for the byte. */ tcg_out_insn(s, RRFc, POPCNT, dest, src, 0); /* Multiply to sum each byte at the top of the word. */ if (type == TCG_TYPE_I32) { tcg_out_insn(s, RIL, MSFI, dest, 0x01010101); tcg_out_sh32(s, RS_SRL, dest, TCG_REG_NONE, 24); } else { tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, 0x0101010101010101ull); tcg_out_insn(s, RRE, MSGR, dest, TCG_TMP0); tcg_out_sh64(s, RSY_SRLG, dest, dest, TCG_REG_NONE, 56); } } static void tgen_deposit(TCGContext *s, TCGReg dest, TCGReg src, int ofs, int len, int z) { int lsb = (63 - ofs); int msb = lsb - (len - 1); tcg_out_risbg(s, dest, src, msb, lsb, ofs, z); } static void tgen_extract(TCGContext *s, TCGReg dest, TCGReg src, int ofs, int len) { tcg_out_risbg(s, dest, src, 64 - len, 63, 64 - ofs, 1); } static void tgen_gotoi(TCGContext *s, int cc, const tcg_insn_unit *dest) { ptrdiff_t off = tcg_pcrel_diff(s, dest) >> 1; if (off == (int16_t)off) { tcg_out_insn(s, RI, BRC, cc, off); } else if (off == (int32_t)off) { tcg_out_insn(s, RIL, BRCL, cc, off); } else { tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, (uintptr_t)dest); tcg_out_insn(s, RR, BCR, cc, TCG_TMP0); } } static void tgen_branch(TCGContext *s, int cc, TCGLabel *l) { if (l->has_value) { tgen_gotoi(s, cc, l->u.value_ptr); } else { tcg_out16(s, RI_BRC | (cc << 4)); tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, l, 2); s->code_ptr += 1; } } static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc, TCGReg r1, TCGReg r2, TCGLabel *l) { tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2); /* Format RIE-b */ tcg_out16(s, (opc & 0xff00) | (r1 << 4) | r2); tcg_out16(s, 0); tcg_out16(s, cc << 12 | (opc & 0xff)); } static void tgen_compare_imm_branch(TCGContext *s, S390Opcode opc, int cc, TCGReg r1, int i2, TCGLabel *l) { tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2); /* Format RIE-c */ tcg_out16(s, (opc & 0xff00) | (r1 << 4) | cc); tcg_out16(s, 0); tcg_out16(s, (i2 << 8) | (opc & 0xff)); } static void tgen_brcond(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, TCGArg c2, int c2const, TCGLabel *l) { int cc; bool is_unsigned = is_unsigned_cond(c); bool in_range; S390Opcode opc; cc = tcg_cond_to_s390_cond[c]; if (!c2const) { opc = (type == TCG_TYPE_I32 ? (is_unsigned ? RIEb_CLRJ : RIEb_CRJ) : (is_unsigned ? RIEb_CLGRJ : RIEb_CGRJ)); tgen_compare_branch(s, opc, cc, r1, c2, l); return; } /* * COMPARE IMMEDIATE AND BRANCH RELATIVE has an 8-bit immediate field. * If the immediate we've been given does not fit that range, we'll * fall back to separate compare and branch instructions using the * larger comparison range afforded by COMPARE IMMEDIATE. */ if (type == TCG_TYPE_I32) { if (is_unsigned) { opc = RIEc_CLIJ; in_range = (uint32_t)c2 == (uint8_t)c2; } else { opc = RIEc_CIJ; in_range = (int32_t)c2 == (int8_t)c2; } } else { if (is_unsigned) { opc = RIEc_CLGIJ; in_range = (uint64_t)c2 == (uint8_t)c2; } else { opc = RIEc_CGIJ; in_range = (int64_t)c2 == (int8_t)c2; } } if (in_range) { tgen_compare_imm_branch(s, opc, cc, r1, c2, l); return; } cc = tgen_cmp(s, type, c, r1, c2, c2const, false); tgen_branch(s, cc, l); } static void tcg_out_call_int(TCGContext *s, const tcg_insn_unit *dest) { ptrdiff_t off = tcg_pcrel_diff(s, dest) >> 1; if (off == (int32_t)off) { tcg_out_insn(s, RIL, BRASL, TCG_REG_R14, off); } else { tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, (uintptr_t)dest); tcg_out_insn(s, RR, BASR, TCG_REG_R14, TCG_TMP0); } } static void tcg_out_call(TCGContext *s, const tcg_insn_unit *dest, const TCGHelperInfo *info) { tcg_out_call_int(s, dest); } typedef struct { TCGReg base; TCGReg index; int disp; TCGAtomAlign aa; } HostAddress; bool tcg_target_has_memory_bswap(MemOp memop) { TCGAtomAlign aa; if ((memop & MO_SIZE) <= MO_64) { return true; } /* * Reject 16-byte memop with 16-byte atomicity, * but do allow a pair of 64-bit operations. */ aa = atom_and_align_for_opc(tcg_ctx, memop, MO_ATOM_IFALIGN, true); return aa.atom <= MO_64; } static void tcg_out_qemu_ld_direct(TCGContext *s, MemOp opc, TCGReg data, HostAddress h) { switch (opc & (MO_SSIZE | MO_BSWAP)) { case MO_UB: tcg_out_insn(s, RXY, LLGC, data, h.base, h.index, h.disp); break; case MO_SB: tcg_out_insn(s, RXY, LGB, data, h.base, h.index, h.disp); break; case MO_UW | MO_BSWAP: /* swapped unsigned halfword load with upper bits zeroed */ tcg_out_insn(s, RXY, LRVH, data, h.base, h.index, h.disp); tcg_out_ext16u(s, data, data); break; case MO_UW: tcg_out_insn(s, RXY, LLGH, data, h.base, h.index, h.disp); break; case MO_SW | MO_BSWAP: /* swapped sign-extended halfword load */ tcg_out_insn(s, RXY, LRVH, data, h.base, h.index, h.disp); tcg_out_ext16s(s, TCG_TYPE_REG, data, data); break; case MO_SW: tcg_out_insn(s, RXY, LGH, data, h.base, h.index, h.disp); break; case MO_UL | MO_BSWAP: /* swapped unsigned int load with upper bits zeroed */ tcg_out_insn(s, RXY, LRV, data, h.base, h.index, h.disp); tcg_out_ext32u(s, data, data); break; case MO_UL: tcg_out_insn(s, RXY, LLGF, data, h.base, h.index, h.disp); break; case MO_SL | MO_BSWAP: /* swapped sign-extended int load */ tcg_out_insn(s, RXY, LRV, data, h.base, h.index, h.disp); tcg_out_ext32s(s, data, data); break; case MO_SL: tcg_out_insn(s, RXY, LGF, data, h.base, h.index, h.disp); break; case MO_UQ | MO_BSWAP: tcg_out_insn(s, RXY, LRVG, data, h.base, h.index, h.disp); break; case MO_UQ: tcg_out_insn(s, RXY, LG, data, h.base, h.index, h.disp); break; default: g_assert_not_reached(); } } static void tcg_out_qemu_st_direct(TCGContext *s, MemOp opc, TCGReg data, HostAddress h) { switch (opc & (MO_SIZE | MO_BSWAP)) { case MO_UB: if (h.disp >= 0 && h.disp < 0x1000) { tcg_out_insn(s, RX, STC, data, h.base, h.index, h.disp); } else { tcg_out_insn(s, RXY, STCY, data, h.base, h.index, h.disp); } break; case MO_UW | MO_BSWAP: tcg_out_insn(s, RXY, STRVH, data, h.base, h.index, h.disp); break; case MO_UW: if (h.disp >= 0 && h.disp < 0x1000) { tcg_out_insn(s, RX, STH, data, h.base, h.index, h.disp); } else { tcg_out_insn(s, RXY, STHY, data, h.base, h.index, h.disp); } break; case MO_UL | MO_BSWAP: tcg_out_insn(s, RXY, STRV, data, h.base, h.index, h.disp); break; case MO_UL: if (h.disp >= 0 && h.disp < 0x1000) { tcg_out_insn(s, RX, ST, data, h.base, h.index, h.disp); } else { tcg_out_insn(s, RXY, STY, data, h.base, h.index, h.disp); } break; case MO_UQ | MO_BSWAP: tcg_out_insn(s, RXY, STRVG, data, h.base, h.index, h.disp); break; case MO_UQ: tcg_out_insn(s, RXY, STG, data, h.base, h.index, h.disp); break; default: g_assert_not_reached(); } } static const TCGLdstHelperParam ldst_helper_param = { .ntmp = 1, .tmp = { TCG_TMP0 } }; static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) { MemOp opc = get_memop(lb->oi); if (!patch_reloc(lb->label_ptr[0], R_390_PC16DBL, (intptr_t)tcg_splitwx_to_rx(s->code_ptr), 2)) { return false; } tcg_out_ld_helper_args(s, lb, &ldst_helper_param); tcg_out_call_int(s, qemu_ld_helpers[opc & MO_SIZE]); tcg_out_ld_helper_ret(s, lb, false, &ldst_helper_param); tgen_gotoi(s, S390_CC_ALWAYS, lb->raddr); return true; } static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) { MemOp opc = get_memop(lb->oi); if (!patch_reloc(lb->label_ptr[0], R_390_PC16DBL, (intptr_t)tcg_splitwx_to_rx(s->code_ptr), 2)) { return false; } tcg_out_st_helper_args(s, lb, &ldst_helper_param); tcg_out_call_int(s, qemu_st_helpers[opc & MO_SIZE]); tgen_gotoi(s, S390_CC_ALWAYS, lb->raddr); return true; } /* We're expecting to use a 20-bit negative offset on the tlb memory ops. */ #define MIN_TLB_MASK_TABLE_OFS -(1 << 19) /* * For softmmu, perform the TLB load and compare. * For useronly, perform any required alignment tests. * In both cases, return a TCGLabelQemuLdst structure if the slow path * is required and fill in @h with the host address for the fast path. */ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, TCGReg addr_reg, MemOpIdx oi, bool is_ld) { TCGType addr_type = s->addr_type; TCGLabelQemuLdst *ldst = NULL; MemOp opc = get_memop(oi); MemOp s_bits = opc & MO_SIZE; unsigned a_mask; h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, s_bits == MO_128); a_mask = (1 << h->aa.align) - 1; #ifdef CONFIG_SOFTMMU unsigned s_mask = (1 << s_bits) - 1; int mem_index = get_mmuidx(oi); int fast_off = tlb_mask_table_ofs(s, mem_index); int mask_off = fast_off + offsetof(CPUTLBDescFast, mask); int table_off = fast_off + offsetof(CPUTLBDescFast, table); int ofs, a_off; uint64_t tlb_mask; ldst = new_ldst_label(s); ldst->is_ld = is_ld; ldst->oi = oi; ldst->addrlo_reg = addr_reg; tcg_out_sh64(s, RSY_SRLG, TCG_TMP0, addr_reg, TCG_REG_NONE, s->page_bits - CPU_TLB_ENTRY_BITS); tcg_out_insn(s, RXY, NG, TCG_TMP0, TCG_AREG0, TCG_REG_NONE, mask_off); tcg_out_insn(s, RXY, AG, TCG_TMP0, TCG_AREG0, TCG_REG_NONE, table_off); /* * For aligned accesses, we check the first byte and include the alignment * bits within the address. For unaligned access, we check that we don't * cross pages using the address of the last byte of the access. */ a_off = (a_mask >= s_mask ? 0 : s_mask - a_mask); tlb_mask = (uint64_t)s->page_mask | a_mask; if (a_off == 0) { tgen_andi_risbg(s, TCG_REG_R0, addr_reg, tlb_mask); } else { tcg_out_insn(s, RX, LA, TCG_REG_R0, addr_reg, TCG_REG_NONE, a_off); tgen_andi(s, addr_type, TCG_REG_R0, tlb_mask); } if (is_ld) { ofs = offsetof(CPUTLBEntry, addr_read); } else { ofs = offsetof(CPUTLBEntry, addr_write); } if (addr_type == TCG_TYPE_I32) { ofs += HOST_BIG_ENDIAN * 4; tcg_out_insn(s, RX, C, TCG_REG_R0, TCG_TMP0, TCG_REG_NONE, ofs); } else { tcg_out_insn(s, RXY, CG, TCG_REG_R0, TCG_TMP0, TCG_REG_NONE, ofs); } tcg_out16(s, RI_BRC | (S390_CC_NE << 4)); ldst->label_ptr[0] = s->code_ptr++; h->index = TCG_TMP0; tcg_out_insn(s, RXY, LG, h->index, TCG_TMP0, TCG_REG_NONE, offsetof(CPUTLBEntry, addend)); if (addr_type == TCG_TYPE_I32) { tcg_out_insn(s, RRE, ALGFR, h->index, addr_reg); h->base = TCG_REG_NONE; } else { h->base = addr_reg; } h->disp = 0; #else if (a_mask) { ldst = new_ldst_label(s); ldst->is_ld = is_ld; ldst->oi = oi; ldst->addrlo_reg = addr_reg; /* We are expecting a_bits to max out at 7, much lower than TMLL. */ tcg_debug_assert(a_mask <= 0xffff); tcg_out_insn(s, RI, TMLL, addr_reg, a_mask); tcg_out16(s, RI_BRC | (7 << 4)); /* CC in {1,2,3} */ ldst->label_ptr[0] = s->code_ptr++; } h->base = addr_reg; if (addr_type == TCG_TYPE_I32) { tcg_out_ext32u(s, TCG_TMP0, addr_reg); h->base = TCG_TMP0; } if (guest_base < 0x80000) { h->index = TCG_REG_NONE; h->disp = guest_base; } else { h->index = TCG_GUEST_BASE_REG; h->disp = 0; } #endif return ldst; } static void tcg_out_qemu_ld(TCGContext* s, TCGReg data_reg, TCGReg addr_reg, MemOpIdx oi, TCGType data_type) { TCGLabelQemuLdst *ldst; HostAddress h; ldst = prepare_host_addr(s, &h, addr_reg, oi, true); tcg_out_qemu_ld_direct(s, get_memop(oi), data_reg, h); if (ldst) { ldst->type = data_type; ldst->datalo_reg = data_reg; ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); } } static void tcg_out_qemu_st(TCGContext* s, TCGReg data_reg, TCGReg addr_reg, MemOpIdx oi, TCGType data_type) { TCGLabelQemuLdst *ldst; HostAddress h; ldst = prepare_host_addr(s, &h, addr_reg, oi, false); tcg_out_qemu_st_direct(s, get_memop(oi), data_reg, h); if (ldst) { ldst->type = data_type; ldst->datalo_reg = data_reg; ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); } } static void tcg_out_qemu_ldst_i128(TCGContext *s, TCGReg datalo, TCGReg datahi, TCGReg addr_reg, MemOpIdx oi, bool is_ld) { TCGLabel *l1 = NULL, *l2 = NULL; TCGLabelQemuLdst *ldst; HostAddress h; bool need_bswap; bool use_pair; S390Opcode insn; ldst = prepare_host_addr(s, &h, addr_reg, oi, is_ld); use_pair = h.aa.atom < MO_128; need_bswap = get_memop(oi) & MO_BSWAP; if (!use_pair) { /* * Atomicity requires we use LPQ. If we've already checked for * 16-byte alignment, that's all we need. If we arrive with * lesser alignment, we have determined that less than 16-byte * alignment can be satisfied with two 8-byte loads. */ if (h.aa.align < MO_128) { use_pair = true; l1 = gen_new_label(); l2 = gen_new_label(); tcg_out_insn(s, RI, TMLL, addr_reg, 15); tgen_branch(s, 7, l1); /* CC in {1,2,3} */ } tcg_debug_assert(!need_bswap); tcg_debug_assert(datalo & 1); tcg_debug_assert(datahi == datalo - 1); insn = is_ld ? RXY_LPQ : RXY_STPQ; tcg_out_insn_RXY(s, insn, datahi, h.base, h.index, h.disp); if (use_pair) { tgen_branch(s, S390_CC_ALWAYS, l2); tcg_out_label(s, l1); } } if (use_pair) { TCGReg d1, d2; if (need_bswap) { d1 = datalo, d2 = datahi; insn = is_ld ? RXY_LRVG : RXY_STRVG; } else { d1 = datahi, d2 = datalo; insn = is_ld ? RXY_LG : RXY_STG; } if (h.base == d1 || h.index == d1) { tcg_out_insn(s, RXY, LAY, TCG_TMP0, h.base, h.index, h.disp); h.base = TCG_TMP0; h.index = TCG_REG_NONE; h.disp = 0; } tcg_out_insn_RXY(s, insn, d1, h.base, h.index, h.disp); tcg_out_insn_RXY(s, insn, d2, h.base, h.index, h.disp + 8); } if (l2) { tcg_out_label(s, l2); } if (ldst) { ldst->type = TCG_TYPE_I128; ldst->datalo_reg = datalo; ldst->datahi_reg = datahi; ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); } } static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0) { /* Reuse the zeroing that exists for goto_ptr. */ if (a0 == 0) { tgen_gotoi(s, S390_CC_ALWAYS, tcg_code_gen_epilogue); } else { tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, a0); tgen_gotoi(s, S390_CC_ALWAYS, tb_ret_addr); } } static void tcg_out_goto_tb(TCGContext *s, int which) { /* * Branch displacement must be aligned for atomic patching; * see if we need to add extra nop before branch */ if (!QEMU_PTR_IS_ALIGNED(s->code_ptr + 1, 4)) { tcg_out16(s, NOP); } tcg_out16(s, RIL_BRCL | (S390_CC_ALWAYS << 4)); set_jmp_insn_offset(s, which); s->code_ptr += 2; set_jmp_reset_offset(s, which); } void tb_target_set_jmp_target(const TranslationBlock *tb, int n, uintptr_t jmp_rx, uintptr_t jmp_rw) { if (!HAVE_FACILITY(GEN_INST_EXT)) { return; } /* patch the branch destination */ uintptr_t addr = tb->jmp_target_addr[n]; intptr_t disp = addr - (jmp_rx - 2); qatomic_set((int32_t *)jmp_rw, disp / 2); /* no need to flush icache explicitly */ } # define OP_32_64(x) \ case glue(glue(INDEX_op_,x),_i32): \ case glue(glue(INDEX_op_,x),_i64) static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg args[TCG_MAX_OP_ARGS], const int const_args[TCG_MAX_OP_ARGS]) { S390Opcode op, op2; TCGArg a0, a1, a2; switch (opc) { case INDEX_op_goto_ptr: a0 = args[0]; tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, a0); break; OP_32_64(ld8u): /* ??? LLC (RXY format) is only present with the extended-immediate facility, whereas LLGC is always present. */ tcg_out_mem(s, 0, RXY_LLGC, args[0], args[1], TCG_REG_NONE, args[2]); break; OP_32_64(ld8s): /* ??? LB is no smaller than LGB, so no point to using it. */ tcg_out_mem(s, 0, RXY_LGB, args[0], args[1], TCG_REG_NONE, args[2]); break; OP_32_64(ld16u): /* ??? LLH (RXY format) is only present with the extended-immediate facility, whereas LLGH is always present. */ tcg_out_mem(s, 0, RXY_LLGH, args[0], args[1], TCG_REG_NONE, args[2]); break; case INDEX_op_ld16s_i32: tcg_out_mem(s, RX_LH, RXY_LHY, args[0], args[1], TCG_REG_NONE, args[2]); break; case INDEX_op_ld_i32: tcg_out_ld(s, TCG_TYPE_I32, args[0], args[1], args[2]); break; OP_32_64(st8): tcg_out_mem(s, RX_STC, RXY_STCY, args[0], args[1], TCG_REG_NONE, args[2]); break; OP_32_64(st16): tcg_out_mem(s, RX_STH, RXY_STHY, args[0], args[1], TCG_REG_NONE, args[2]); break; case INDEX_op_st_i32: tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); break; case INDEX_op_add_i32: a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; if (const_args[2]) { do_addi_32: if (a0 == a1) { if (a2 == (int16_t)a2) { tcg_out_insn(s, RI, AHI, a0, a2); break; } tcg_out_insn(s, RIL, AFI, a0, a2); break; } tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); } else if (a0 == a1) { tcg_out_insn(s, RR, AR, a0, a2); } else { tcg_out_insn(s, RX, LA, a0, a1, a2, 0); } break; case INDEX_op_sub_i32: a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; if (const_args[2]) { a2 = -a2; goto do_addi_32; } else if (a0 == a1) { tcg_out_insn(s, RR, SR, a0, a2); } else { tcg_out_insn(s, RRFa, SRK, a0, a1, a2); } break; case INDEX_op_and_i32: a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); tgen_andi(s, TCG_TYPE_I32, a0, a2); } else if (a0 == a1) { tcg_out_insn(s, RR, NR, a0, a2); } else { tcg_out_insn(s, RRFa, NRK, a0, a1, a2); } break; case INDEX_op_or_i32: a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); tgen_ori(s, a0, a2); } else if (a0 == a1) { tcg_out_insn(s, RR, OR, a0, a2); } else { tcg_out_insn(s, RRFa, ORK, a0, a1, a2); } break; case INDEX_op_xor_i32: a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); tcg_out_insn(s, RIL, XILF, a0, a2); } else if (a0 == a1) { tcg_out_insn(s, RR, XR, args[0], args[2]); } else { tcg_out_insn(s, RRFa, XRK, a0, a1, a2); } break; case INDEX_op_andc_i32: a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); tgen_andi(s, TCG_TYPE_I32, a0, (uint32_t)~a2); } else { tcg_out_insn(s, RRFa, NCRK, a0, a1, a2); } break; case INDEX_op_orc_i32: a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); tgen_ori(s, a0, (uint32_t)~a2); } else { tcg_out_insn(s, RRFa, OCRK, a0, a1, a2); } break; case INDEX_op_eqv_i32: a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); tcg_out_insn(s, RIL, XILF, a0, ~a2); } else { tcg_out_insn(s, RRFa, NXRK, a0, a1, a2); } break; case INDEX_op_nand_i32: tcg_out_insn(s, RRFa, NNRK, args[0], args[1], args[2]); break; case INDEX_op_nor_i32: tcg_out_insn(s, RRFa, NORK, args[0], args[1], args[2]); break; case INDEX_op_neg_i32: tcg_out_insn(s, RR, LCR, args[0], args[1]); break; case INDEX_op_not_i32: tcg_out_insn(s, RRFa, NORK, args[0], args[1], args[1]); break; case INDEX_op_mul_i32: a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I32, a0, a1); if (a2 == (int16_t)a2) { tcg_out_insn(s, RI, MHI, a0, a2); } else { tcg_out_insn(s, RIL, MSFI, a0, a2); } } else if (a0 == a1) { tcg_out_insn(s, RRE, MSR, a0, a2); } else { tcg_out_insn(s, RRFa, MSRKC, a0, a1, a2); } break; case INDEX_op_div2_i32: tcg_debug_assert(args[0] == args[2]); tcg_debug_assert(args[1] == args[3]); tcg_debug_assert((args[1] & 1) == 0); tcg_debug_assert(args[0] == args[1] + 1); tcg_out_insn(s, RR, DR, args[1], args[4]); break; case INDEX_op_divu2_i32: tcg_debug_assert(args[0] == args[2]); tcg_debug_assert(args[1] == args[3]); tcg_debug_assert((args[1] & 1) == 0); tcg_debug_assert(args[0] == args[1] + 1); tcg_out_insn(s, RRE, DLR, args[1], args[4]); break; case INDEX_op_shl_i32: op = RS_SLL; op2 = RSY_SLLK; do_shift32: a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; if (a0 == a1) { if (const_args[2]) { tcg_out_sh32(s, op, a0, TCG_REG_NONE, a2); } else { tcg_out_sh32(s, op, a0, a2, 0); } } else { /* Using tcg_out_sh64 here for the format; it is a 32-bit shift. */ if (const_args[2]) { tcg_out_sh64(s, op2, a0, a1, TCG_REG_NONE, a2); } else { tcg_out_sh64(s, op2, a0, a1, a2, 0); } } break; case INDEX_op_shr_i32: op = RS_SRL; op2 = RSY_SRLK; goto do_shift32; case INDEX_op_sar_i32: op = RS_SRA; op2 = RSY_SRAK; goto do_shift32; case INDEX_op_rotl_i32: /* ??? Using tcg_out_sh64 here for the format; it is a 32-bit rol. */ if (const_args[2]) { tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_REG_NONE, args[2]); } else { tcg_out_sh64(s, RSY_RLL, args[0], args[1], args[2], 0); } break; case INDEX_op_rotr_i32: if (const_args[2]) { tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_REG_NONE, (32 - args[2]) & 31); } else { tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]); tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_TMP0, 0); } break; case INDEX_op_bswap16_i32: a0 = args[0], a1 = args[1], a2 = args[2]; tcg_out_insn(s, RRE, LRVR, a0, a1); if (a2 & TCG_BSWAP_OS) { tcg_out_sh32(s, RS_SRA, a0, TCG_REG_NONE, 16); } else { tcg_out_sh32(s, RS_SRL, a0, TCG_REG_NONE, 16); } break; case INDEX_op_bswap16_i64: a0 = args[0], a1 = args[1], a2 = args[2]; tcg_out_insn(s, RRE, LRVGR, a0, a1); if (a2 & TCG_BSWAP_OS) { tcg_out_sh64(s, RSY_SRAG, a0, a0, TCG_REG_NONE, 48); } else { tcg_out_sh64(s, RSY_SRLG, a0, a0, TCG_REG_NONE, 48); } break; case INDEX_op_bswap32_i32: tcg_out_insn(s, RRE, LRVR, args[0], args[1]); break; case INDEX_op_bswap32_i64: a0 = args[0], a1 = args[1], a2 = args[2]; tcg_out_insn(s, RRE, LRVR, a0, a1); if (a2 & TCG_BSWAP_OS) { tcg_out_ext32s(s, a0, a0); } else if ((a2 & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) { tcg_out_ext32u(s, a0, a0); } break; case INDEX_op_add2_i32: if (const_args[4]) { tcg_out_insn(s, RIL, ALFI, args[0], args[4]); } else { tcg_out_insn(s, RR, ALR, args[0], args[4]); } tcg_out_insn(s, RRE, ALCR, args[1], args[5]); break; case INDEX_op_sub2_i32: if (const_args[4]) { tcg_out_insn(s, RIL, SLFI, args[0], args[4]); } else { tcg_out_insn(s, RR, SLR, args[0], args[4]); } tcg_out_insn(s, RRE, SLBR, args[1], args[5]); break; case INDEX_op_br: tgen_branch(s, S390_CC_ALWAYS, arg_label(args[0])); break; case INDEX_op_brcond_i32: tgen_brcond(s, TCG_TYPE_I32, args[2], args[0], args[1], const_args[1], arg_label(args[3])); break; case INDEX_op_setcond_i32: tgen_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], args[2], const_args[2]); break; case INDEX_op_movcond_i32: tgen_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], args[2], const_args[2], args[3], const_args[3], args[4]); break; case INDEX_op_qemu_ld_a32_i32: case INDEX_op_qemu_ld_a64_i32: tcg_out_qemu_ld(s, args[0], args[1], args[2], TCG_TYPE_I32); break; case INDEX_op_qemu_ld_a32_i64: case INDEX_op_qemu_ld_a64_i64: tcg_out_qemu_ld(s, args[0], args[1], args[2], TCG_TYPE_I64); break; case INDEX_op_qemu_st_a32_i32: case INDEX_op_qemu_st_a64_i32: tcg_out_qemu_st(s, args[0], args[1], args[2], TCG_TYPE_I32); break; case INDEX_op_qemu_st_a32_i64: case INDEX_op_qemu_st_a64_i64: tcg_out_qemu_st(s, args[0], args[1], args[2], TCG_TYPE_I64); break; case INDEX_op_qemu_ld_a32_i128: case INDEX_op_qemu_ld_a64_i128: tcg_out_qemu_ldst_i128(s, args[0], args[1], args[2], args[3], true); break; case INDEX_op_qemu_st_a32_i128: case INDEX_op_qemu_st_a64_i128: tcg_out_qemu_ldst_i128(s, args[0], args[1], args[2], args[3], false); break; case INDEX_op_ld16s_i64: tcg_out_mem(s, 0, RXY_LGH, args[0], args[1], TCG_REG_NONE, args[2]); break; case INDEX_op_ld32u_i64: tcg_out_mem(s, 0, RXY_LLGF, args[0], args[1], TCG_REG_NONE, args[2]); break; case INDEX_op_ld32s_i64: tcg_out_mem(s, 0, RXY_LGF, args[0], args[1], TCG_REG_NONE, args[2]); break; case INDEX_op_ld_i64: tcg_out_ld(s, TCG_TYPE_I64, args[0], args[1], args[2]); break; case INDEX_op_st32_i64: tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); break; case INDEX_op_st_i64: tcg_out_st(s, TCG_TYPE_I64, args[0], args[1], args[2]); break; case INDEX_op_add_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { do_addi_64: if (a0 == a1) { if (a2 == (int16_t)a2) { tcg_out_insn(s, RI, AGHI, a0, a2); break; } if (a2 == (int32_t)a2) { tcg_out_insn(s, RIL, AGFI, a0, a2); break; } if (a2 == (uint32_t)a2) { tcg_out_insn(s, RIL, ALGFI, a0, a2); break; } if (-a2 == (uint32_t)-a2) { tcg_out_insn(s, RIL, SLGFI, a0, -a2); break; } } tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); } else if (a0 == a1) { tcg_out_insn(s, RRE, AGR, a0, a2); } else { tcg_out_insn(s, RX, LA, a0, a1, a2, 0); } break; case INDEX_op_sub_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { a2 = -a2; goto do_addi_64; } else { tcg_out_insn(s, RRFa, SGRK, a0, a1, a2); } break; case INDEX_op_and_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); tgen_andi(s, TCG_TYPE_I64, args[0], args[2]); } else { tcg_out_insn(s, RRFa, NGRK, a0, a1, a2); } break; case INDEX_op_or_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); tgen_ori(s, a0, a2); } else { tcg_out_insn(s, RRFa, OGRK, a0, a1, a2); } break; case INDEX_op_xor_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); tgen_xori(s, a0, a2); } else { tcg_out_insn(s, RRFa, XGRK, a0, a1, a2); } break; case INDEX_op_andc_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); tgen_andi(s, TCG_TYPE_I64, a0, ~a2); } else { tcg_out_insn(s, RRFa, NCGRK, a0, a1, a2); } break; case INDEX_op_orc_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); tgen_ori(s, a0, ~a2); } else { tcg_out_insn(s, RRFa, OCGRK, a0, a1, a2); } break; case INDEX_op_eqv_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); tgen_xori(s, a0, ~a2); } else { tcg_out_insn(s, RRFa, NXGRK, a0, a1, a2); } break; case INDEX_op_nand_i64: tcg_out_insn(s, RRFa, NNGRK, args[0], args[1], args[2]); break; case INDEX_op_nor_i64: tcg_out_insn(s, RRFa, NOGRK, args[0], args[1], args[2]); break; case INDEX_op_neg_i64: tcg_out_insn(s, RRE, LCGR, args[0], args[1]); break; case INDEX_op_not_i64: tcg_out_insn(s, RRFa, NOGRK, args[0], args[1], args[1]); break; case INDEX_op_bswap64_i64: tcg_out_insn(s, RRE, LRVGR, args[0], args[1]); break; case INDEX_op_mul_i64: a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[2]) { tcg_out_mov(s, TCG_TYPE_I64, a0, a1); if (a2 == (int16_t)a2) { tcg_out_insn(s, RI, MGHI, a0, a2); } else { tcg_out_insn(s, RIL, MSGFI, a0, a2); } } else if (a0 == a1) { tcg_out_insn(s, RRE, MSGR, a0, a2); } else { tcg_out_insn(s, RRFa, MSGRKC, a0, a1, a2); } break; case INDEX_op_div2_i64: /* * ??? We get an unnecessary sign-extension of the dividend * into op0 with this definition, but as we do in fact always * produce both quotient and remainder using INDEX_op_div_i64 * instead requires jumping through even more hoops. */ tcg_debug_assert(args[0] == args[2]); tcg_debug_assert(args[1] == args[3]); tcg_debug_assert((args[1] & 1) == 0); tcg_debug_assert(args[0] == args[1] + 1); tcg_out_insn(s, RRE, DSGR, args[1], args[4]); break; case INDEX_op_divu2_i64: tcg_debug_assert(args[0] == args[2]); tcg_debug_assert(args[1] == args[3]); tcg_debug_assert((args[1] & 1) == 0); tcg_debug_assert(args[0] == args[1] + 1); tcg_out_insn(s, RRE, DLGR, args[1], args[4]); break; case INDEX_op_mulu2_i64: tcg_debug_assert(args[0] == args[2]); tcg_debug_assert((args[1] & 1) == 0); tcg_debug_assert(args[0] == args[1] + 1); tcg_out_insn(s, RRE, MLGR, args[1], args[3]); break; case INDEX_op_muls2_i64: tcg_debug_assert((args[1] & 1) == 0); tcg_debug_assert(args[0] == args[1] + 1); tcg_out_insn(s, RRFa, MGRK, args[1], args[2], args[3]); break; case INDEX_op_shl_i64: op = RSY_SLLG; do_shift64: if (const_args[2]) { tcg_out_sh64(s, op, args[0], args[1], TCG_REG_NONE, args[2]); } else { tcg_out_sh64(s, op, args[0], args[1], args[2], 0); } break; case INDEX_op_shr_i64: op = RSY_SRLG; goto do_shift64; case INDEX_op_sar_i64: op = RSY_SRAG; goto do_shift64; case INDEX_op_rotl_i64: if (const_args[2]) { tcg_out_sh64(s, RSY_RLLG, args[0], args[1], TCG_REG_NONE, args[2]); } else { tcg_out_sh64(s, RSY_RLLG, args[0], args[1], args[2], 0); } break; case INDEX_op_rotr_i64: if (const_args[2]) { tcg_out_sh64(s, RSY_RLLG, args[0], args[1], TCG_REG_NONE, (64 - args[2]) & 63); } else { /* We can use the smaller 32-bit negate because only the low 6 bits are examined for the rotate. */ tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]); tcg_out_sh64(s, RSY_RLLG, args[0], args[1], TCG_TMP0, 0); } break; case INDEX_op_add2_i64: if (const_args[4]) { if ((int64_t)args[4] >= 0) { tcg_out_insn(s, RIL, ALGFI, args[0], args[4]); } else { tcg_out_insn(s, RIL, SLGFI, args[0], -args[4]); } } else { tcg_out_insn(s, RRE, ALGR, args[0], args[4]); } tcg_out_insn(s, RRE, ALCGR, args[1], args[5]); break; case INDEX_op_sub2_i64: if (const_args[4]) { if ((int64_t)args[4] >= 0) { tcg_out_insn(s, RIL, SLGFI, args[0], args[4]); } else { tcg_out_insn(s, RIL, ALGFI, args[0], -args[4]); } } else { tcg_out_insn(s, RRE, SLGR, args[0], args[4]); } tcg_out_insn(s, RRE, SLBGR, args[1], args[5]); break; case INDEX_op_brcond_i64: tgen_brcond(s, TCG_TYPE_I64, args[2], args[0], args[1], const_args[1], arg_label(args[3])); break; case INDEX_op_setcond_i64: tgen_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], args[2], const_args[2]); break; case INDEX_op_movcond_i64: tgen_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], args[2], const_args[2], args[3], const_args[3], args[4]); break; OP_32_64(deposit): a0 = args[0], a1 = args[1], a2 = args[2]; if (const_args[1]) { tgen_deposit(s, a0, a2, args[3], args[4], 1); } else { /* Since we can't support "0Z" as a constraint, we allow a1 in any register. Fix things up as if a matching constraint. */ if (a0 != a1) { TCGType type = (opc == INDEX_op_deposit_i64); if (a0 == a2) { tcg_out_mov(s, type, TCG_TMP0, a2); a2 = TCG_TMP0; } tcg_out_mov(s, type, a0, a1); } tgen_deposit(s, a0, a2, args[3], args[4], 0); } break; OP_32_64(extract): tgen_extract(s, args[0], args[1], args[2], args[3]); break; case INDEX_op_clz_i64: tgen_clz(s, args[0], args[1], args[2], const_args[2]); break; case INDEX_op_ctpop_i32: tgen_ctpop(s, TCG_TYPE_I32, args[0], args[1]); break; case INDEX_op_ctpop_i64: tgen_ctpop(s, TCG_TYPE_I64, args[0], args[1]); break; case INDEX_op_mb: /* The host memory model is quite strong, we simply need to serialize the instruction stream. */ if (args[0] & TCG_MO_ST_LD) { /* fast-bcr-serialization facility (45) is present */ tcg_out_insn(s, RR, BCR, 14, 0); } break; case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */ case INDEX_op_mov_i64: case INDEX_op_call: /* Always emitted via tcg_out_call. */ case INDEX_op_exit_tb: /* Always emitted via tcg_out_exit_tb. */ case INDEX_op_goto_tb: /* Always emitted via tcg_out_goto_tb. */ case INDEX_op_ext8s_i32: /* Always emitted via tcg_reg_alloc_op. */ case INDEX_op_ext8s_i64: case INDEX_op_ext8u_i32: case INDEX_op_ext8u_i64: case INDEX_op_ext16s_i32: case INDEX_op_ext16s_i64: case INDEX_op_ext16u_i32: case INDEX_op_ext16u_i64: case INDEX_op_ext32s_i64: case INDEX_op_ext32u_i64: case INDEX_op_ext_i32_i64: case INDEX_op_extu_i32_i64: case INDEX_op_extrl_i64_i32: default: g_assert_not_reached(); } } static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece, TCGReg dst, TCGReg src) { if (is_general_reg(src)) { /* Replicate general register into two MO_64. */ tcg_out_insn(s, VRRf, VLVGP, dst, src, src); if (vece == MO_64) { return true; } src = dst; } /* * Recall that the "standard" integer, within a vector, is the * rightmost element of the leftmost doubleword, a-la VLLEZ. */ tcg_out_insn(s, VRIc, VREP, dst, (8 >> vece) - 1, src, vece); return true; } static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece, TCGReg dst, TCGReg base, intptr_t offset) { tcg_out_vrx_mem(s, VRX_VLREP, dst, base, TCG_REG_NONE, offset, vece); return true; } static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece, TCGReg dst, int64_t val) { int i, mask, msb, lsb; /* Look for int16_t elements. */ if (vece <= MO_16 || (vece == MO_32 ? (int32_t)val : val) == (int16_t)val) { tcg_out_insn(s, VRIa, VREPI, dst, val, vece); return; } /* Look for bit masks. */ if (vece == MO_32) { if (risbg_mask((int32_t)val)) { /* Handle wraparound by swapping msb and lsb. */ if ((val & 0x80000001u) == 0x80000001u) { msb = 32 - ctz32(~val); lsb = clz32(~val) - 1; } else { msb = clz32(val); lsb = 31 - ctz32(val); } tcg_out_insn(s, VRIb, VGM, dst, msb, lsb, MO_32); return; } } else { if (risbg_mask(val)) { /* Handle wraparound by swapping msb and lsb. */ if ((val & 0x8000000000000001ull) == 0x8000000000000001ull) { /* Handle wraparound by swapping msb and lsb. */ msb = 64 - ctz64(~val); lsb = clz64(~val) - 1; } else { msb = clz64(val); lsb = 63 - ctz64(val); } tcg_out_insn(s, VRIb, VGM, dst, msb, lsb, MO_64); return; } } /* Look for all bytes 0x00 or 0xff. */ for (i = mask = 0; i < 8; i++) { uint8_t byte = val >> (i * 8); if (byte == 0xff) { mask |= 1 << i; } else if (byte != 0) { break; } } if (i == 8) { tcg_out_insn(s, VRIa, VGBM, dst, mask * 0x0101, 0); return; } /* Otherwise, stuff it in the constant pool. */ tcg_out_insn(s, RIL, LARL, TCG_TMP0, 0); new_pool_label(s, val, R_390_PC32DBL, s->code_ptr - 2, 2); tcg_out_insn(s, VRX, VLREP, dst, TCG_TMP0, TCG_REG_NONE, 0, MO_64); } static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc, unsigned vecl, unsigned vece, const TCGArg args[TCG_MAX_OP_ARGS], const int const_args[TCG_MAX_OP_ARGS]) { TCGType type = vecl + TCG_TYPE_V64; TCGArg a0 = args[0], a1 = args[1], a2 = args[2]; switch (opc) { case INDEX_op_ld_vec: tcg_out_ld(s, type, a0, a1, a2); break; case INDEX_op_st_vec: tcg_out_st(s, type, a0, a1, a2); break; case INDEX_op_dupm_vec: tcg_out_dupm_vec(s, type, vece, a0, a1, a2); break; case INDEX_op_abs_vec: tcg_out_insn(s, VRRa, VLP, a0, a1, vece); break; case INDEX_op_neg_vec: tcg_out_insn(s, VRRa, VLC, a0, a1, vece); break; case INDEX_op_not_vec: tcg_out_insn(s, VRRc, VNO, a0, a1, a1, 0); break; case INDEX_op_add_vec: tcg_out_insn(s, VRRc, VA, a0, a1, a2, vece); break; case INDEX_op_sub_vec: tcg_out_insn(s, VRRc, VS, a0, a1, a2, vece); break; case INDEX_op_and_vec: tcg_out_insn(s, VRRc, VN, a0, a1, a2, 0); break; case INDEX_op_andc_vec: tcg_out_insn(s, VRRc, VNC, a0, a1, a2, 0); break; case INDEX_op_mul_vec: tcg_out_insn(s, VRRc, VML, a0, a1, a2, vece); break; case INDEX_op_or_vec: tcg_out_insn(s, VRRc, VO, a0, a1, a2, 0); break; case INDEX_op_orc_vec: tcg_out_insn(s, VRRc, VOC, a0, a1, a2, 0); break; case INDEX_op_xor_vec: tcg_out_insn(s, VRRc, VX, a0, a1, a2, 0); break; case INDEX_op_nand_vec: tcg_out_insn(s, VRRc, VNN, a0, a1, a2, 0); break; case INDEX_op_nor_vec: tcg_out_insn(s, VRRc, VNO, a0, a1, a2, 0); break; case INDEX_op_eqv_vec: tcg_out_insn(s, VRRc, VNX, a0, a1, a2, 0); break; case INDEX_op_shli_vec: tcg_out_insn(s, VRSa, VESL, a0, a2, TCG_REG_NONE, a1, vece); break; case INDEX_op_shri_vec: tcg_out_insn(s, VRSa, VESRL, a0, a2, TCG_REG_NONE, a1, vece); break; case INDEX_op_sari_vec: tcg_out_insn(s, VRSa, VESRA, a0, a2, TCG_REG_NONE, a1, vece); break; case INDEX_op_rotli_vec: tcg_out_insn(s, VRSa, VERLL, a0, a2, TCG_REG_NONE, a1, vece); break; case INDEX_op_shls_vec: tcg_out_insn(s, VRSa, VESL, a0, 0, a2, a1, vece); break; case INDEX_op_shrs_vec: tcg_out_insn(s, VRSa, VESRL, a0, 0, a2, a1, vece); break; case INDEX_op_sars_vec: tcg_out_insn(s, VRSa, VESRA, a0, 0, a2, a1, vece); break; case INDEX_op_rotls_vec: tcg_out_insn(s, VRSa, VERLL, a0, 0, a2, a1, vece); break; case INDEX_op_shlv_vec: tcg_out_insn(s, VRRc, VESLV, a0, a1, a2, vece); break; case INDEX_op_shrv_vec: tcg_out_insn(s, VRRc, VESRLV, a0, a1, a2, vece); break; case INDEX_op_sarv_vec: tcg_out_insn(s, VRRc, VESRAV, a0, a1, a2, vece); break; case INDEX_op_rotlv_vec: tcg_out_insn(s, VRRc, VERLLV, a0, a1, a2, vece); break; case INDEX_op_smin_vec: tcg_out_insn(s, VRRc, VMN, a0, a1, a2, vece); break; case INDEX_op_smax_vec: tcg_out_insn(s, VRRc, VMX, a0, a1, a2, vece); break; case INDEX_op_umin_vec: tcg_out_insn(s, VRRc, VMNL, a0, a1, a2, vece); break; case INDEX_op_umax_vec: tcg_out_insn(s, VRRc, VMXL, a0, a1, a2, vece); break; case INDEX_op_bitsel_vec: tcg_out_insn(s, VRRe, VSEL, a0, a2, args[3], a1); break; case INDEX_op_cmp_vec: switch ((TCGCond)args[3]) { case TCG_COND_EQ: tcg_out_insn(s, VRRc, VCEQ, a0, a1, a2, vece); break; case TCG_COND_GT: tcg_out_insn(s, VRRc, VCH, a0, a1, a2, vece); break; case TCG_COND_GTU: tcg_out_insn(s, VRRc, VCHL, a0, a1, a2, vece); break; default: g_assert_not_reached(); } break; case INDEX_op_s390_vuph_vec: tcg_out_insn(s, VRRa, VUPH, a0, a1, vece); break; case INDEX_op_s390_vupl_vec: tcg_out_insn(s, VRRa, VUPL, a0, a1, vece); break; case INDEX_op_s390_vpks_vec: tcg_out_insn(s, VRRc, VPKS, a0, a1, a2, vece); break; case INDEX_op_mov_vec: /* Always emitted via tcg_out_mov. */ case INDEX_op_dup_vec: /* Always emitted via tcg_out_dup_vec. */ default: g_assert_not_reached(); } } int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece) { switch (opc) { case INDEX_op_abs_vec: case INDEX_op_add_vec: case INDEX_op_and_vec: case INDEX_op_andc_vec: case INDEX_op_bitsel_vec: case INDEX_op_eqv_vec: case INDEX_op_nand_vec: case INDEX_op_neg_vec: case INDEX_op_nor_vec: case INDEX_op_not_vec: case INDEX_op_or_vec: case INDEX_op_orc_vec: case INDEX_op_rotli_vec: case INDEX_op_rotls_vec: case INDEX_op_rotlv_vec: case INDEX_op_sari_vec: case INDEX_op_sars_vec: case INDEX_op_sarv_vec: case INDEX_op_shli_vec: case INDEX_op_shls_vec: case INDEX_op_shlv_vec: case INDEX_op_shri_vec: case INDEX_op_shrs_vec: case INDEX_op_shrv_vec: case INDEX_op_smax_vec: case INDEX_op_smin_vec: case INDEX_op_sub_vec: case INDEX_op_umax_vec: case INDEX_op_umin_vec: case INDEX_op_xor_vec: return 1; case INDEX_op_cmp_vec: case INDEX_op_cmpsel_vec: case INDEX_op_rotrv_vec: return -1; case INDEX_op_mul_vec: return vece < MO_64; case INDEX_op_ssadd_vec: case INDEX_op_sssub_vec: return vece < MO_64 ? -1 : 0; default: return 0; } } static bool expand_vec_cmp_noinv(TCGType type, unsigned vece, TCGv_vec v0, TCGv_vec v1, TCGv_vec v2, TCGCond cond) { bool need_swap = false, need_inv = false; switch (cond) { case TCG_COND_EQ: case TCG_COND_GT: case TCG_COND_GTU: break; case TCG_COND_NE: case TCG_COND_LE: case TCG_COND_LEU: need_inv = true; break; case TCG_COND_LT: case TCG_COND_LTU: need_swap = true; break; case TCG_COND_GE: case TCG_COND_GEU: need_swap = need_inv = true; break; default: g_assert_not_reached(); } if (need_inv) { cond = tcg_invert_cond(cond); } if (need_swap) { TCGv_vec t1; t1 = v1, v1 = v2, v2 = t1; cond = tcg_swap_cond(cond); } vec_gen_4(INDEX_op_cmp_vec, type, vece, tcgv_vec_arg(v0), tcgv_vec_arg(v1), tcgv_vec_arg(v2), cond); return need_inv; } static void expand_vec_cmp(TCGType type, unsigned vece, TCGv_vec v0, TCGv_vec v1, TCGv_vec v2, TCGCond cond) { if (expand_vec_cmp_noinv(type, vece, v0, v1, v2, cond)) { tcg_gen_not_vec(vece, v0, v0); } } static void expand_vec_cmpsel(TCGType type, unsigned vece, TCGv_vec v0, TCGv_vec c1, TCGv_vec c2, TCGv_vec v3, TCGv_vec v4, TCGCond cond) { TCGv_vec t = tcg_temp_new_vec(type); if (expand_vec_cmp_noinv(type, vece, t, c1, c2, cond)) { /* Invert the sense of the compare by swapping arguments. */ tcg_gen_bitsel_vec(vece, v0, t, v4, v3); } else { tcg_gen_bitsel_vec(vece, v0, t, v3, v4); } tcg_temp_free_vec(t); } static void expand_vec_sat(TCGType type, unsigned vece, TCGv_vec v0, TCGv_vec v1, TCGv_vec v2, TCGOpcode add_sub_opc) { TCGv_vec h1 = tcg_temp_new_vec(type); TCGv_vec h2 = tcg_temp_new_vec(type); TCGv_vec l1 = tcg_temp_new_vec(type); TCGv_vec l2 = tcg_temp_new_vec(type); tcg_debug_assert (vece < MO_64); /* Unpack with sign-extension. */ vec_gen_2(INDEX_op_s390_vuph_vec, type, vece, tcgv_vec_arg(h1), tcgv_vec_arg(v1)); vec_gen_2(INDEX_op_s390_vuph_vec, type, vece, tcgv_vec_arg(h2), tcgv_vec_arg(v2)); vec_gen_2(INDEX_op_s390_vupl_vec, type, vece, tcgv_vec_arg(l1), tcgv_vec_arg(v1)); vec_gen_2(INDEX_op_s390_vupl_vec, type, vece, tcgv_vec_arg(l2), tcgv_vec_arg(v2)); /* Arithmetic on a wider element size. */ vec_gen_3(add_sub_opc, type, vece + 1, tcgv_vec_arg(h1), tcgv_vec_arg(h1), tcgv_vec_arg(h2)); vec_gen_3(add_sub_opc, type, vece + 1, tcgv_vec_arg(l1), tcgv_vec_arg(l1), tcgv_vec_arg(l2)); /* Pack with saturation. */ vec_gen_3(INDEX_op_s390_vpks_vec, type, vece + 1, tcgv_vec_arg(v0), tcgv_vec_arg(h1), tcgv_vec_arg(l1)); tcg_temp_free_vec(h1); tcg_temp_free_vec(h2); tcg_temp_free_vec(l1); tcg_temp_free_vec(l2); } void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece, TCGArg a0, ...) { va_list va; TCGv_vec v0, v1, v2, v3, v4, t0; va_start(va, a0); v0 = temp_tcgv_vec(arg_temp(a0)); v1 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); v2 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); switch (opc) { case INDEX_op_cmp_vec: expand_vec_cmp(type, vece, v0, v1, v2, va_arg(va, TCGArg)); break; case INDEX_op_cmpsel_vec: v3 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); v4 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); expand_vec_cmpsel(type, vece, v0, v1, v2, v3, v4, va_arg(va, TCGArg)); break; case INDEX_op_rotrv_vec: t0 = tcg_temp_new_vec(type); tcg_gen_neg_vec(vece, t0, v2); tcg_gen_rotlv_vec(vece, v0, v1, t0); tcg_temp_free_vec(t0); break; case INDEX_op_ssadd_vec: expand_vec_sat(type, vece, v0, v1, v2, INDEX_op_add_vec); break; case INDEX_op_sssub_vec: expand_vec_sat(type, vece, v0, v1, v2, INDEX_op_sub_vec); break; default: g_assert_not_reached(); } va_end(va); } static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) { switch (op) { case INDEX_op_goto_ptr: return C_O0_I1(r); case INDEX_op_ld8u_i32: case INDEX_op_ld8u_i64: case INDEX_op_ld8s_i32: case INDEX_op_ld8s_i64: case INDEX_op_ld16u_i32: case INDEX_op_ld16u_i64: case INDEX_op_ld16s_i32: case INDEX_op_ld16s_i64: case INDEX_op_ld_i32: case INDEX_op_ld32u_i64: case INDEX_op_ld32s_i64: case INDEX_op_ld_i64: return C_O1_I1(r, r); case INDEX_op_st8_i32: case INDEX_op_st8_i64: case INDEX_op_st16_i32: case INDEX_op_st16_i64: case INDEX_op_st_i32: case INDEX_op_st32_i64: case INDEX_op_st_i64: return C_O0_I2(r, r); case INDEX_op_add_i32: case INDEX_op_add_i64: case INDEX_op_shl_i64: case INDEX_op_shr_i64: case INDEX_op_sar_i64: case INDEX_op_rotl_i32: case INDEX_op_rotl_i64: case INDEX_op_rotr_i32: case INDEX_op_rotr_i64: case INDEX_op_setcond_i32: return C_O1_I2(r, r, ri); case INDEX_op_setcond_i64: return C_O1_I2(r, r, rA); case INDEX_op_clz_i64: return C_O1_I2(r, r, rI); case INDEX_op_sub_i32: case INDEX_op_sub_i64: case INDEX_op_and_i32: case INDEX_op_or_i32: case INDEX_op_xor_i32: return C_O1_I2(r, r, ri); case INDEX_op_and_i64: return C_O1_I2(r, r, rNKR); case INDEX_op_or_i64: case INDEX_op_xor_i64: return C_O1_I2(r, r, rK); case INDEX_op_andc_i32: case INDEX_op_orc_i32: case INDEX_op_eqv_i32: return C_O1_I2(r, r, ri); case INDEX_op_andc_i64: return C_O1_I2(r, r, rKR); case INDEX_op_orc_i64: case INDEX_op_eqv_i64: return C_O1_I2(r, r, rNK); case INDEX_op_nand_i32: case INDEX_op_nand_i64: case INDEX_op_nor_i32: case INDEX_op_nor_i64: return C_O1_I2(r, r, r); case INDEX_op_mul_i32: return (HAVE_FACILITY(MISC_INSN_EXT2) ? C_O1_I2(r, r, ri) : C_O1_I2(r, 0, ri)); case INDEX_op_mul_i64: return (HAVE_FACILITY(MISC_INSN_EXT2) ? C_O1_I2(r, r, rJ) : C_O1_I2(r, 0, rJ)); case INDEX_op_shl_i32: case INDEX_op_shr_i32: case INDEX_op_sar_i32: return C_O1_I2(r, r, ri); case INDEX_op_brcond_i32: return C_O0_I2(r, ri); case INDEX_op_brcond_i64: return C_O0_I2(r, rA); case INDEX_op_bswap16_i32: case INDEX_op_bswap16_i64: case INDEX_op_bswap32_i32: case INDEX_op_bswap32_i64: case INDEX_op_bswap64_i64: case INDEX_op_neg_i32: case INDEX_op_neg_i64: case INDEX_op_not_i32: case INDEX_op_not_i64: case INDEX_op_ext8s_i32: case INDEX_op_ext8s_i64: case INDEX_op_ext8u_i32: case INDEX_op_ext8u_i64: case INDEX_op_ext16s_i32: case INDEX_op_ext16s_i64: case INDEX_op_ext16u_i32: case INDEX_op_ext16u_i64: case INDEX_op_ext32s_i64: case INDEX_op_ext32u_i64: case INDEX_op_ext_i32_i64: case INDEX_op_extu_i32_i64: case INDEX_op_extract_i32: case INDEX_op_extract_i64: case INDEX_op_ctpop_i32: case INDEX_op_ctpop_i64: return C_O1_I1(r, r); case INDEX_op_qemu_ld_a32_i32: case INDEX_op_qemu_ld_a64_i32: case INDEX_op_qemu_ld_a32_i64: case INDEX_op_qemu_ld_a64_i64: return C_O1_I1(r, r); case INDEX_op_qemu_st_a32_i64: case INDEX_op_qemu_st_a64_i64: case INDEX_op_qemu_st_a32_i32: case INDEX_op_qemu_st_a64_i32: return C_O0_I2(r, r); case INDEX_op_qemu_ld_a32_i128: case INDEX_op_qemu_ld_a64_i128: return C_O2_I1(o, m, r); case INDEX_op_qemu_st_a32_i128: case INDEX_op_qemu_st_a64_i128: return C_O0_I3(o, m, r); case INDEX_op_deposit_i32: case INDEX_op_deposit_i64: return C_O1_I2(r, rZ, r); case INDEX_op_movcond_i32: return C_O1_I4(r, r, ri, rI, r); case INDEX_op_movcond_i64: return C_O1_I4(r, r, rA, rI, r); case INDEX_op_div2_i32: case INDEX_op_div2_i64: case INDEX_op_divu2_i32: case INDEX_op_divu2_i64: return C_O2_I3(o, m, 0, 1, r); case INDEX_op_mulu2_i64: return C_O2_I2(o, m, 0, r); case INDEX_op_muls2_i64: return C_O2_I2(o, m, r, r); case INDEX_op_add2_i32: case INDEX_op_sub2_i32: return C_O2_I4(r, r, 0, 1, ri, r); case INDEX_op_add2_i64: case INDEX_op_sub2_i64: return C_O2_I4(r, r, 0, 1, rA, r); case INDEX_op_st_vec: return C_O0_I2(v, r); case INDEX_op_ld_vec: case INDEX_op_dupm_vec: return C_O1_I1(v, r); case INDEX_op_dup_vec: return C_O1_I1(v, vr); case INDEX_op_abs_vec: case INDEX_op_neg_vec: case INDEX_op_not_vec: case INDEX_op_rotli_vec: case INDEX_op_sari_vec: case INDEX_op_shli_vec: case INDEX_op_shri_vec: case INDEX_op_s390_vuph_vec: case INDEX_op_s390_vupl_vec: return C_O1_I1(v, v); case INDEX_op_add_vec: case INDEX_op_sub_vec: case INDEX_op_and_vec: case INDEX_op_andc_vec: case INDEX_op_or_vec: case INDEX_op_orc_vec: case INDEX_op_xor_vec: case INDEX_op_nand_vec: case INDEX_op_nor_vec: case INDEX_op_eqv_vec: case INDEX_op_cmp_vec: case INDEX_op_mul_vec: case INDEX_op_rotlv_vec: case INDEX_op_rotrv_vec: case INDEX_op_shlv_vec: case INDEX_op_shrv_vec: case INDEX_op_sarv_vec: case INDEX_op_smax_vec: case INDEX_op_smin_vec: case INDEX_op_umax_vec: case INDEX_op_umin_vec: case INDEX_op_s390_vpks_vec: return C_O1_I2(v, v, v); case INDEX_op_rotls_vec: case INDEX_op_shls_vec: case INDEX_op_shrs_vec: case INDEX_op_sars_vec: return C_O1_I2(v, v, r); case INDEX_op_bitsel_vec: return C_O1_I3(v, v, v, v); default: g_assert_not_reached(); } } /* * Mainline glibc added HWCAP_S390_VX before it was kernel abi. * Some distros have fixed this up locally, others have not. */ #ifndef HWCAP_S390_VXRS #define HWCAP_S390_VXRS 2048 #endif static void query_s390_facilities(void) { unsigned long hwcap = qemu_getauxval(AT_HWCAP); const char *which; /* Is STORE FACILITY LIST EXTENDED available? Honestly, I believe this is present on all 64-bit systems, but let's check for it anyway. */ if (hwcap & HWCAP_S390_STFLE) { register int r0 __asm__("0") = ARRAY_SIZE(s390_facilities) - 1; register void *r1 __asm__("1") = s390_facilities; /* stfle 0(%r1) */ asm volatile(".word 0xb2b0,0x1000" : "=r"(r0) : "r"(r0), "r"(r1) : "memory", "cc"); } /* * Use of vector registers requires os support beyond the facility bit. * If the kernel does not advertise support, disable the facility bits. * There is nothing else we currently care about in the 3rd word, so * disable VECTOR with one store. */ if (!(hwcap & HWCAP_S390_VXRS)) { s390_facilities[2] = 0; } /* * Minimum supported cpu revision is z196. * Check for all required facilities. * ZARCH_ACTIVE is done via preprocessor check for 64-bit. */ if (!HAVE_FACILITY(LONG_DISP)) { which = "long-displacement"; goto fail; } if (!HAVE_FACILITY(EXT_IMM)) { which = "extended-immediate"; goto fail; } if (!HAVE_FACILITY(GEN_INST_EXT)) { which = "general-instructions-extension"; goto fail; } /* * Facility 45 is a big bin that contains: distinct-operands, * fast-BCR-serialization, high-word, population-count, * interlocked-access-1, and load/store-on-condition-1 */ if (!HAVE_FACILITY(45)) { which = "45"; goto fail; } return; fail: error_report("%s: missing required facility %s", __func__, which); exit(EXIT_FAILURE); } static void tcg_target_init(TCGContext *s) { query_s390_facilities(); tcg_target_available_regs[TCG_TYPE_I32] = 0xffff; tcg_target_available_regs[TCG_TYPE_I64] = 0xffff; if (HAVE_FACILITY(VECTOR)) { tcg_target_available_regs[TCG_TYPE_V64] = 0xffffffff00000000ull; tcg_target_available_regs[TCG_TYPE_V128] = 0xffffffff00000000ull; } tcg_target_call_clobber_regs = 0; tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R0); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R1); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R2); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R3); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R4); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R5); /* The r6 register is technically call-saved, but it's also a parameter register, so it can get killed by setup for the qemu_st helper. */ tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R6); /* The return register can be considered call-clobbered. */ tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R14); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V0); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V1); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V2); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V3); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V4); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V5); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V6); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V7); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V16); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V17); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V18); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V19); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V20); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V21); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V22); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V23); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V24); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V25); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V26); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V27); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V28); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V29); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V30); tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V31); s->reserved_regs = 0; tcg_regset_set_reg(s->reserved_regs, TCG_TMP0); /* XXX many insns can't be used with R0, so we better avoid it for now */ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); } #define FRAME_SIZE ((int)(TCG_TARGET_CALL_STACK_OFFSET \ + TCG_STATIC_CALL_ARGS_SIZE \ + CPU_TEMP_BUF_NLONGS * sizeof(long))) static void tcg_target_qemu_prologue(TCGContext *s) { /* stmg %r6,%r15,48(%r15) (save registers) */ tcg_out_insn(s, RXY, STMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, 48); /* aghi %r15,-frame_size */ tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -FRAME_SIZE); tcg_set_frame(s, TCG_REG_CALL_STACK, TCG_STATIC_CALL_ARGS_SIZE + TCG_TARGET_CALL_STACK_OFFSET, CPU_TEMP_BUF_NLONGS * sizeof(long)); #ifndef CONFIG_SOFTMMU if (guest_base >= 0x80000) { tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base); tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); } #endif tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); /* br %r3 (go to TB) */ tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, tcg_target_call_iarg_regs[1]); /* * Return path for goto_ptr. Set return value to 0, a-la exit_tb, * and fall through to the rest of the epilogue. */ tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr); tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, 0); /* TB epilogue */ tb_ret_addr = tcg_splitwx_to_rx(s->code_ptr); /* lmg %r6,%r15,fs+48(%r15) (restore registers) */ tcg_out_insn(s, RXY, LMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, FRAME_SIZE + 48); /* br %r14 (return) */ tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R14); } static void tcg_out_nop_fill(tcg_insn_unit *p, int count) { memset(p, 0x07, count * sizeof(tcg_insn_unit)); } typedef struct { DebugFrameHeader h; uint8_t fde_def_cfa[4]; uint8_t fde_reg_ofs[18]; } DebugFrame; /* We're expecting a 2 byte uleb128 encoded value. */ QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14)); #define ELF_HOST_MACHINE EM_S390 static const DebugFrame debug_frame = { .h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */ .h.cie.id = -1, .h.cie.version = 1, .h.cie.code_align = 1, .h.cie.data_align = 8, /* sleb128 8 */ .h.cie.return_column = TCG_REG_R14, /* Total FDE size does not include the "len" member. */ .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset), .fde_def_cfa = { 12, TCG_REG_CALL_STACK, /* DW_CFA_def_cfa %r15, ... */ (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ (FRAME_SIZE >> 7) }, .fde_reg_ofs = { 0x86, 6, /* DW_CFA_offset, %r6, 48 */ 0x87, 7, /* DW_CFA_offset, %r7, 56 */ 0x88, 8, /* DW_CFA_offset, %r8, 64 */ 0x89, 9, /* DW_CFA_offset, %r92, 72 */ 0x8a, 10, /* DW_CFA_offset, %r10, 80 */ 0x8b, 11, /* DW_CFA_offset, %r11, 88 */ 0x8c, 12, /* DW_CFA_offset, %r12, 96 */ 0x8d, 13, /* DW_CFA_offset, %r13, 104 */ 0x8e, 14, /* DW_CFA_offset, %r14, 112 */ } }; void tcg_register_jit(const void *buf, size_t buf_size) { tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); }