root / tcg / s390 / tcg-target.c @ 3cf246f0
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/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2009 Ulrich Hecht <uli@suse.de>
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* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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* Copyright (c) 2010 Richard Henderson <rth@twiddle.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "tcg-be-null.h" |
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/* We only support generating code for 64-bit mode. */
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#if TCG_TARGET_REG_BITS != 64 |
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#error "unsupported code generation mode" |
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#endif
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/* ??? The translation blocks produced by TCG are generally small enough to
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be entirely reachable with a 16-bit displacement. Leaving the option for
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a 32-bit displacement here Just In Case. */
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#define USE_LONG_BRANCHES 0 |
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#define TCG_CT_CONST_32 0x0100 |
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#define TCG_CT_CONST_MULI 0x0800 |
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#define TCG_CT_CONST_ORI 0x2000 |
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#define TCG_CT_CONST_XORI 0x4000 |
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#define TCG_CT_CONST_CMPI 0x8000 |
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/* Several places within the instruction set 0 means "no register"
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rather than TCG_REG_R0. */
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#define TCG_REG_NONE 0 |
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/* A scratch register that may be be used throughout the backend. */
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#define TCG_TMP0 TCG_REG_R14
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#ifdef CONFIG_USE_GUEST_BASE
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#define TCG_GUEST_BASE_REG TCG_REG_R13
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#else
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#define TCG_GUEST_BASE_REG TCG_REG_R0
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#endif
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#ifndef GUEST_BASE
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#define GUEST_BASE 0 |
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#endif
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/* All of the following instructions are prefixed with their instruction
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format, and are defined as 8- or 16-bit quantities, even when the two
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halves of the 16-bit quantity may appear 32 bits apart in the insn.
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This makes it easy to copy the values from the tables in Appendix B. */
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typedef enum S390Opcode { |
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RIL_AFI = 0xc209,
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RIL_AGFI = 0xc208,
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RIL_ALFI = 0xc20b,
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RIL_ALGFI = 0xc20a,
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RIL_BRASL = 0xc005,
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RIL_BRCL = 0xc004,
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RIL_CFI = 0xc20d,
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RIL_CGFI = 0xc20c,
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RIL_CLFI = 0xc20f,
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RIL_CLGFI = 0xc20e,
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RIL_IIHF = 0xc008,
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RIL_IILF = 0xc009,
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RIL_LARL = 0xc000,
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RIL_LGFI = 0xc001,
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RIL_LGRL = 0xc408,
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RIL_LLIHF = 0xc00e,
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RIL_LLILF = 0xc00f,
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RIL_LRL = 0xc40d,
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RIL_MSFI = 0xc201,
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RIL_MSGFI = 0xc200,
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RIL_NIHF = 0xc00a,
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RIL_NILF = 0xc00b,
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RIL_OIHF = 0xc00c,
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RIL_OILF = 0xc00d,
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RIL_SLFI = 0xc205,
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RIL_SLGFI = 0xc204,
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RIL_XIHF = 0xc006,
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RIL_XILF = 0xc007,
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RI_AGHI = 0xa70b,
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RI_AHI = 0xa70a,
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RI_BRC = 0xa704,
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RI_IIHH = 0xa500,
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RI_IIHL = 0xa501,
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RI_IILH = 0xa502,
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RI_IILL = 0xa503,
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RI_LGHI = 0xa709,
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RI_LLIHH = 0xa50c,
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RI_LLIHL = 0xa50d,
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RI_LLILH = 0xa50e,
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RI_LLILL = 0xa50f,
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RI_MGHI = 0xa70d,
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RI_MHI = 0xa70c,
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RI_NIHH = 0xa504,
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RI_NIHL = 0xa505,
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RI_NILH = 0xa506,
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RI_NILL = 0xa507,
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RI_OIHH = 0xa508,
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RI_OIHL = 0xa509,
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RI_OILH = 0xa50a,
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RI_OILL = 0xa50b,
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RIE_CGIJ = 0xec7c,
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RIE_CGRJ = 0xec64,
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RIE_CIJ = 0xec7e,
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RIE_CLGRJ = 0xec65,
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RIE_CLIJ = 0xec7f,
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RIE_CLGIJ = 0xec7d,
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RIE_CLRJ = 0xec77,
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RIE_CRJ = 0xec76,
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RIE_RISBG = 0xec55,
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RRE_AGR = 0xb908,
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RRE_ALGR = 0xb90a,
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RRE_ALCR = 0xb998,
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RRE_ALCGR = 0xb988,
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RRE_CGR = 0xb920,
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RRE_CLGR = 0xb921,
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RRE_DLGR = 0xb987,
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RRE_DLR = 0xb997,
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RRE_DSGFR = 0xb91d,
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RRE_DSGR = 0xb90d,
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RRE_LGBR = 0xb906,
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RRE_LCGR = 0xb903,
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RRE_LGFR = 0xb914,
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RRE_LGHR = 0xb907,
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RRE_LGR = 0xb904,
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RRE_LLGCR = 0xb984,
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RRE_LLGFR = 0xb916,
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RRE_LLGHR = 0xb985,
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RRE_LRVR = 0xb91f,
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RRE_LRVGR = 0xb90f,
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RRE_LTGR = 0xb902,
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RRE_MLGR = 0xb986,
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RRE_MSGR = 0xb90c,
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RRE_MSR = 0xb252,
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RRE_NGR = 0xb980,
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RRE_OGR = 0xb981,
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RRE_SGR = 0xb909,
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RRE_SLGR = 0xb90b,
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RRE_SLBR = 0xb999,
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RRE_SLBGR = 0xb989,
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RRE_XGR = 0xb982,
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RRF_LOCR = 0xb9f2,
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RRF_LOCGR = 0xb9e2,
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RR_AR = 0x1a,
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RR_ALR = 0x1e,
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RR_BASR = 0x0d,
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RR_BCR = 0x07,
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RR_CLR = 0x15,
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RR_CR = 0x19,
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RR_DR = 0x1d,
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RR_LCR = 0x13,
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RR_LR = 0x18,
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RR_LTR = 0x12,
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RR_NR = 0x14,
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RR_OR = 0x16,
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RR_SR = 0x1b,
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RR_SLR = 0x1f,
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RR_XR = 0x17,
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RSY_RLL = 0xeb1d,
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RSY_RLLG = 0xeb1c,
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RSY_SLLG = 0xeb0d,
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RSY_SRAG = 0xeb0a,
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RSY_SRLG = 0xeb0c,
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RS_SLL = 0x89,
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RS_SRA = 0x8a,
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RS_SRL = 0x88,
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RXY_AG = 0xe308,
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RXY_AY = 0xe35a,
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RXY_CG = 0xe320,
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RXY_CY = 0xe359,
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RXY_LAY = 0xe371,
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RXY_LB = 0xe376,
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RXY_LG = 0xe304,
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RXY_LGB = 0xe377,
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RXY_LGF = 0xe314,
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RXY_LGH = 0xe315,
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RXY_LHY = 0xe378,
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RXY_LLGC = 0xe390,
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RXY_LLGF = 0xe316,
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RXY_LLGH = 0xe391,
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RXY_LMG = 0xeb04,
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RXY_LRV = 0xe31e,
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RXY_LRVG = 0xe30f,
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RXY_LRVH = 0xe31f,
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RXY_LY = 0xe358,
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RXY_STCY = 0xe372,
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RXY_STG = 0xe324,
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RXY_STHY = 0xe370,
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RXY_STMG = 0xeb24,
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RXY_STRV = 0xe33e,
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RXY_STRVG = 0xe32f,
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RXY_STRVH = 0xe33f,
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RXY_STY = 0xe350,
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RX_A = 0x5a,
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RX_C = 0x59,
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RX_L = 0x58,
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RX_LA = 0x41,
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RX_LH = 0x48,
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RX_ST = 0x50,
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RX_STC = 0x42,
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RX_STH = 0x40,
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} S390Opcode; |
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|
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#define LD_SIGNED 0x04 |
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#define LD_UINT8 0x00 |
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#define LD_INT8 (LD_UINT8 | LD_SIGNED)
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#define LD_UINT16 0x01 |
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#define LD_INT16 (LD_UINT16 | LD_SIGNED)
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#define LD_UINT32 0x02 |
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#define LD_INT32 (LD_UINT32 | LD_SIGNED)
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#define LD_UINT64 0x03 |
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#define LD_INT64 (LD_UINT64 | LD_SIGNED)
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|
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#ifndef NDEBUG
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static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { |
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"%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", |
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"%r8", "%r9", "%r10" "%r11" "%r12" "%r13" "%r14" "%r15" |
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}; |
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#endif
|
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|
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/* Since R6 is a potential argument register, choose it last of the
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call-saved registers. Likewise prefer the call-clobbered registers
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in reverse order to maximize the chance of avoiding the arguments. */
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static const int tcg_target_reg_alloc_order[] = { |
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TCG_REG_R13, |
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TCG_REG_R12, |
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TCG_REG_R11, |
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TCG_REG_R10, |
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TCG_REG_R9, |
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TCG_REG_R8, |
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TCG_REG_R7, |
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TCG_REG_R6, |
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TCG_REG_R14, |
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TCG_REG_R0, |
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TCG_REG_R1, |
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TCG_REG_R5, |
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TCG_REG_R4, |
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TCG_REG_R3, |
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TCG_REG_R2, |
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}; |
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|
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static const int tcg_target_call_iarg_regs[] = { |
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TCG_REG_R2, |
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TCG_REG_R3, |
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TCG_REG_R4, |
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TCG_REG_R5, |
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TCG_REG_R6, |
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}; |
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|
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static const int tcg_target_call_oarg_regs[] = { |
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TCG_REG_R2, |
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}; |
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|
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#define S390_CC_EQ 8 |
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#define S390_CC_LT 4 |
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#define S390_CC_GT 2 |
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#define S390_CC_OV 1 |
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#define S390_CC_NE (S390_CC_LT | S390_CC_GT)
|
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#define S390_CC_LE (S390_CC_LT | S390_CC_EQ)
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#define S390_CC_GE (S390_CC_GT | S390_CC_EQ)
|
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#define S390_CC_NEVER 0 |
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#define S390_CC_ALWAYS 15 |
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|
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/* Condition codes that result from a COMPARE and COMPARE LOGICAL. */
|
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static const uint8_t tcg_cond_to_s390_cond[] = { |
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[TCG_COND_EQ] = S390_CC_EQ, |
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[TCG_COND_NE] = S390_CC_NE, |
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[TCG_COND_LT] = S390_CC_LT, |
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[TCG_COND_LE] = S390_CC_LE, |
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[TCG_COND_GT] = S390_CC_GT, |
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[TCG_COND_GE] = S390_CC_GE, |
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[TCG_COND_LTU] = S390_CC_LT, |
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[TCG_COND_LEU] = S390_CC_LE, |
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[TCG_COND_GTU] = S390_CC_GT, |
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[TCG_COND_GEU] = S390_CC_GE, |
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}; |
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|
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/* Condition codes that result from a LOAD AND TEST. Here, we have no
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unsigned instruction variation, however since the test is vs zero we
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can re-map the outcomes appropriately. */
|
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static const uint8_t tcg_cond_to_ltr_cond[] = { |
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[TCG_COND_EQ] = S390_CC_EQ, |
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[TCG_COND_NE] = S390_CC_NE, |
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[TCG_COND_LT] = S390_CC_LT, |
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[TCG_COND_LE] = S390_CC_LE, |
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[TCG_COND_GT] = S390_CC_GT, |
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[TCG_COND_GE] = S390_CC_GE, |
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[TCG_COND_LTU] = S390_CC_NEVER, |
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[TCG_COND_LEU] = S390_CC_EQ, |
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[TCG_COND_GTU] = S390_CC_NE, |
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[TCG_COND_GEU] = S390_CC_ALWAYS, |
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}; |
| 318 |
|
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#ifdef CONFIG_SOFTMMU
|
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/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
|
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int mmu_idx) */
|
| 322 |
static const void * const qemu_ld_helpers[4] = { |
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helper_ldb_mmu, |
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helper_ldw_mmu, |
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helper_ldl_mmu, |
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helper_ldq_mmu, |
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}; |
| 328 |
|
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/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
|
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uintxx_t val, int mmu_idx) */
|
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static const void * const qemu_st_helpers[4] = { |
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helper_stb_mmu, |
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helper_stw_mmu, |
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helper_stl_mmu, |
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helper_stq_mmu, |
| 336 |
}; |
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#endif
|
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|
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static uint8_t *tb_ret_addr;
|
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|
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/* A list of relevant facilities used by this translator. Some of these
|
| 342 |
are required for proper operation, and these are checked at startup. */
|
| 343 |
|
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#define FACILITY_ZARCH_ACTIVE (1ULL << (63 - 2)) |
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#define FACILITY_LONG_DISP (1ULL << (63 - 18)) |
| 346 |
#define FACILITY_EXT_IMM (1ULL << (63 - 21)) |
| 347 |
#define FACILITY_GEN_INST_EXT (1ULL << (63 - 34)) |
| 348 |
#define FACILITY_LOAD_ON_COND (1ULL << (63 - 45)) |
| 349 |
|
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static uint64_t facilities;
|
| 351 |
|
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static void patch_reloc(uint8_t *code_ptr, int type, |
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intptr_t value, intptr_t addend) |
| 354 |
{
|
| 355 |
intptr_t code_ptr_tl = (intptr_t)code_ptr; |
| 356 |
intptr_t pcrel2; |
| 357 |
|
| 358 |
/* ??? Not the usual definition of "addend". */
|
| 359 |
pcrel2 = (value - (code_ptr_tl + addend)) >> 1;
|
| 360 |
|
| 361 |
switch (type) {
|
| 362 |
case R_390_PC16DBL:
|
| 363 |
assert(pcrel2 == (int16_t)pcrel2); |
| 364 |
*(int16_t *)code_ptr = pcrel2; |
| 365 |
break;
|
| 366 |
case R_390_PC32DBL:
|
| 367 |
assert(pcrel2 == (int32_t)pcrel2); |
| 368 |
*(int32_t *)code_ptr = pcrel2; |
| 369 |
break;
|
| 370 |
default:
|
| 371 |
tcg_abort(); |
| 372 |
break;
|
| 373 |
} |
| 374 |
} |
| 375 |
|
| 376 |
/* parse target specific constraints */
|
| 377 |
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) |
| 378 |
{
|
| 379 |
const char *ct_str = *pct_str; |
| 380 |
|
| 381 |
switch (ct_str[0]) { |
| 382 |
case 'r': /* all registers */ |
| 383 |
ct->ct |= TCG_CT_REG; |
| 384 |
tcg_regset_set32(ct->u.regs, 0, 0xffff); |
| 385 |
break;
|
| 386 |
case 'R': /* not R0 */ |
| 387 |
ct->ct |= TCG_CT_REG; |
| 388 |
tcg_regset_set32(ct->u.regs, 0, 0xffff); |
| 389 |
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
| 390 |
break;
|
| 391 |
case 'L': /* qemu_ld/st constraint */ |
| 392 |
ct->ct |= TCG_CT_REG; |
| 393 |
tcg_regset_set32(ct->u.regs, 0, 0xffff); |
| 394 |
tcg_regset_reset_reg (ct->u.regs, TCG_REG_R2); |
| 395 |
tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3); |
| 396 |
tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4); |
| 397 |
break;
|
| 398 |
case 'a': /* force R2 for division */ |
| 399 |
ct->ct |= TCG_CT_REG; |
| 400 |
tcg_regset_clear(ct->u.regs); |
| 401 |
tcg_regset_set_reg(ct->u.regs, TCG_REG_R2); |
| 402 |
break;
|
| 403 |
case 'b': /* force R3 for division */ |
| 404 |
ct->ct |= TCG_CT_REG; |
| 405 |
tcg_regset_clear(ct->u.regs); |
| 406 |
tcg_regset_set_reg(ct->u.regs, TCG_REG_R3); |
| 407 |
break;
|
| 408 |
case 'W': /* force 32-bit ("word") immediate */ |
| 409 |
ct->ct |= TCG_CT_CONST_32; |
| 410 |
break;
|
| 411 |
case 'K': |
| 412 |
ct->ct |= TCG_CT_CONST_MULI; |
| 413 |
break;
|
| 414 |
case 'O': |
| 415 |
ct->ct |= TCG_CT_CONST_ORI; |
| 416 |
break;
|
| 417 |
case 'X': |
| 418 |
ct->ct |= TCG_CT_CONST_XORI; |
| 419 |
break;
|
| 420 |
case 'C': |
| 421 |
ct->ct |= TCG_CT_CONST_CMPI; |
| 422 |
break;
|
| 423 |
default:
|
| 424 |
return -1; |
| 425 |
} |
| 426 |
ct_str++; |
| 427 |
*pct_str = ct_str; |
| 428 |
|
| 429 |
return 0; |
| 430 |
} |
| 431 |
|
| 432 |
/* Immediates to be used with logical OR. This is an optimization only,
|
| 433 |
since a full 64-bit immediate OR can always be performed with 4 sequential
|
| 434 |
OI[LH][LH] instructions. What we're looking for is immediates that we
|
| 435 |
can load efficiently, and the immediate load plus the reg-reg OR is
|
| 436 |
smaller than the sequential OI's. */
|
| 437 |
|
| 438 |
static int tcg_match_ori(int ct, tcg_target_long val) |
| 439 |
{
|
| 440 |
if (facilities & FACILITY_EXT_IMM) {
|
| 441 |
if (ct & TCG_CT_CONST_32) {
|
| 442 |
/* All 32-bit ORs can be performed with 1 48-bit insn. */
|
| 443 |
return 1; |
| 444 |
} |
| 445 |
} |
| 446 |
|
| 447 |
/* Look for negative values. These are best to load with LGHI. */
|
| 448 |
if (val < 0) { |
| 449 |
if (val == (int16_t)val) {
|
| 450 |
return 0; |
| 451 |
} |
| 452 |
if (facilities & FACILITY_EXT_IMM) {
|
| 453 |
if (val == (int32_t)val) {
|
| 454 |
return 0; |
| 455 |
} |
| 456 |
} |
| 457 |
} |
| 458 |
|
| 459 |
return 1; |
| 460 |
} |
| 461 |
|
| 462 |
/* Immediates to be used with logical XOR. This is almost, but not quite,
|
| 463 |
only an optimization. XOR with immediate is only supported with the
|
| 464 |
extended-immediate facility. That said, there are a few patterns for
|
| 465 |
which it is better to load the value into a register first. */
|
| 466 |
|
| 467 |
static int tcg_match_xori(int ct, tcg_target_long val) |
| 468 |
{
|
| 469 |
if ((facilities & FACILITY_EXT_IMM) == 0) { |
| 470 |
return 0; |
| 471 |
} |
| 472 |
|
| 473 |
if (ct & TCG_CT_CONST_32) {
|
| 474 |
/* All 32-bit XORs can be performed with 1 48-bit insn. */
|
| 475 |
return 1; |
| 476 |
} |
| 477 |
|
| 478 |
/* Look for negative values. These are best to load with LGHI. */
|
| 479 |
if (val < 0 && val == (int32_t)val) { |
| 480 |
return 0; |
| 481 |
} |
| 482 |
|
| 483 |
return 1; |
| 484 |
} |
| 485 |
|
| 486 |
/* Imediates to be used with comparisons. */
|
| 487 |
|
| 488 |
static int tcg_match_cmpi(int ct, tcg_target_long val) |
| 489 |
{
|
| 490 |
if (facilities & FACILITY_EXT_IMM) {
|
| 491 |
/* The COMPARE IMMEDIATE instruction is available. */
|
| 492 |
if (ct & TCG_CT_CONST_32) {
|
| 493 |
/* We have a 32-bit immediate and can compare against anything. */
|
| 494 |
return 1; |
| 495 |
} else {
|
| 496 |
/* ??? We have no insight here into whether the comparison is
|
| 497 |
signed or unsigned. The COMPARE IMMEDIATE insn uses a 32-bit
|
| 498 |
signed immediate, and the COMPARE LOGICAL IMMEDIATE insn uses
|
| 499 |
a 32-bit unsigned immediate. If we were to use the (semi)
|
| 500 |
obvious "val == (int32_t)val" we would be enabling unsigned
|
| 501 |
comparisons vs very large numbers. The only solution is to
|
| 502 |
take the intersection of the ranges. */
|
| 503 |
/* ??? Another possible solution is to simply lie and allow all
|
| 504 |
constants here and force the out-of-range values into a temp
|
| 505 |
register in tgen_cmp when we have knowledge of the actual
|
| 506 |
comparison code in use. */
|
| 507 |
return val >= 0 && val <= 0x7fffffff; |
| 508 |
} |
| 509 |
} else {
|
| 510 |
/* Only the LOAD AND TEST instruction is available. */
|
| 511 |
return val == 0; |
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
/* Test if a constant matches the constraint. */
|
| 516 |
static int tcg_target_const_match(tcg_target_long val, |
| 517 |
const TCGArgConstraint *arg_ct)
|
| 518 |
{
|
| 519 |
int ct = arg_ct->ct;
|
| 520 |
|
| 521 |
if (ct & TCG_CT_CONST) {
|
| 522 |
return 1; |
| 523 |
} |
| 524 |
|
| 525 |
/* Handle the modifiers. */
|
| 526 |
if (ct & TCG_CT_CONST_32) {
|
| 527 |
val = (int32_t)val; |
| 528 |
} |
| 529 |
|
| 530 |
/* The following are mutually exclusive. */
|
| 531 |
if (ct & TCG_CT_CONST_MULI) {
|
| 532 |
/* Immediates that may be used with multiply. If we have the
|
| 533 |
general-instruction-extensions, then we have MULTIPLY SINGLE
|
| 534 |
IMMEDIATE with a signed 32-bit, otherwise we have only
|
| 535 |
MULTIPLY HALFWORD IMMEDIATE, with a signed 16-bit. */
|
| 536 |
if (facilities & FACILITY_GEN_INST_EXT) {
|
| 537 |
return val == (int32_t)val;
|
| 538 |
} else {
|
| 539 |
return val == (int16_t)val;
|
| 540 |
} |
| 541 |
} else if (ct & TCG_CT_CONST_ORI) { |
| 542 |
return tcg_match_ori(ct, val);
|
| 543 |
} else if (ct & TCG_CT_CONST_XORI) { |
| 544 |
return tcg_match_xori(ct, val);
|
| 545 |
} else if (ct & TCG_CT_CONST_CMPI) { |
| 546 |
return tcg_match_cmpi(ct, val);
|
| 547 |
} |
| 548 |
|
| 549 |
return 0; |
| 550 |
} |
| 551 |
|
| 552 |
/* Emit instructions according to the given instruction format. */
|
| 553 |
|
| 554 |
static void tcg_out_insn_RR(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2) |
| 555 |
{
|
| 556 |
tcg_out16(s, (op << 8) | (r1 << 4) | r2); |
| 557 |
} |
| 558 |
|
| 559 |
static void tcg_out_insn_RRE(TCGContext *s, S390Opcode op, |
| 560 |
TCGReg r1, TCGReg r2) |
| 561 |
{
|
| 562 |
tcg_out32(s, (op << 16) | (r1 << 4) | r2); |
| 563 |
} |
| 564 |
|
| 565 |
static void tcg_out_insn_RRF(TCGContext *s, S390Opcode op, |
| 566 |
TCGReg r1, TCGReg r2, int m3)
|
| 567 |
{
|
| 568 |
tcg_out32(s, (op << 16) | (m3 << 12) | (r1 << 4) | r2); |
| 569 |
} |
| 570 |
|
| 571 |
static void tcg_out_insn_RI(TCGContext *s, S390Opcode op, TCGReg r1, int i2) |
| 572 |
{
|
| 573 |
tcg_out32(s, (op << 16) | (r1 << 20) | (i2 & 0xffff)); |
| 574 |
} |
| 575 |
|
| 576 |
static void tcg_out_insn_RIL(TCGContext *s, S390Opcode op, TCGReg r1, int i2) |
| 577 |
{
|
| 578 |
tcg_out16(s, op | (r1 << 4));
|
| 579 |
tcg_out32(s, i2); |
| 580 |
} |
| 581 |
|
| 582 |
static void tcg_out_insn_RS(TCGContext *s, S390Opcode op, TCGReg r1, |
| 583 |
TCGReg b2, TCGReg r3, int disp)
|
| 584 |
{
|
| 585 |
tcg_out32(s, (op << 24) | (r1 << 20) | (r3 << 16) | (b2 << 12) |
| 586 |
| (disp & 0xfff));
|
| 587 |
} |
| 588 |
|
| 589 |
static void tcg_out_insn_RSY(TCGContext *s, S390Opcode op, TCGReg r1, |
| 590 |
TCGReg b2, TCGReg r3, int disp)
|
| 591 |
{
|
| 592 |
tcg_out16(s, (op & 0xff00) | (r1 << 4) | r3); |
| 593 |
tcg_out32(s, (op & 0xff) | (b2 << 28) |
| 594 |
| ((disp & 0xfff) << 16) | ((disp & 0xff000) >> 4)); |
| 595 |
} |
| 596 |
|
| 597 |
#define tcg_out_insn_RX tcg_out_insn_RS
|
| 598 |
#define tcg_out_insn_RXY tcg_out_insn_RSY
|
| 599 |
|
| 600 |
/* Emit an opcode with "type-checking" of the format. */
|
| 601 |
#define tcg_out_insn(S, FMT, OP, ...) \
|
| 602 |
glue(tcg_out_insn_,FMT)(S, glue(glue(FMT,_),OP), ## __VA_ARGS__) |
| 603 |
|
| 604 |
|
| 605 |
/* emit 64-bit shifts */
|
| 606 |
static void tcg_out_sh64(TCGContext* s, S390Opcode op, TCGReg dest, |
| 607 |
TCGReg src, TCGReg sh_reg, int sh_imm)
|
| 608 |
{
|
| 609 |
tcg_out_insn_RSY(s, op, dest, sh_reg, src, sh_imm); |
| 610 |
} |
| 611 |
|
| 612 |
/* emit 32-bit shifts */
|
| 613 |
static void tcg_out_sh32(TCGContext* s, S390Opcode op, TCGReg dest, |
| 614 |
TCGReg sh_reg, int sh_imm)
|
| 615 |
{
|
| 616 |
tcg_out_insn_RS(s, op, dest, sh_reg, 0, sh_imm);
|
| 617 |
} |
| 618 |
|
| 619 |
static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg dst, TCGReg src) |
| 620 |
{
|
| 621 |
if (src != dst) {
|
| 622 |
if (type == TCG_TYPE_I32) {
|
| 623 |
tcg_out_insn(s, RR, LR, dst, src); |
| 624 |
} else {
|
| 625 |
tcg_out_insn(s, RRE, LGR, dst, src); |
| 626 |
} |
| 627 |
} |
| 628 |
} |
| 629 |
|
| 630 |
/* load a register with an immediate value */
|
| 631 |
static void tcg_out_movi(TCGContext *s, TCGType type, |
| 632 |
TCGReg ret, tcg_target_long sval) |
| 633 |
{
|
| 634 |
static const S390Opcode lli_insns[4] = { |
| 635 |
RI_LLILL, RI_LLILH, RI_LLIHL, RI_LLIHH |
| 636 |
}; |
| 637 |
|
| 638 |
tcg_target_ulong uval = sval; |
| 639 |
int i;
|
| 640 |
|
| 641 |
if (type == TCG_TYPE_I32) {
|
| 642 |
uval = (uint32_t)sval; |
| 643 |
sval = (int32_t)sval; |
| 644 |
} |
| 645 |
|
| 646 |
/* Try all 32-bit insns that can load it in one go. */
|
| 647 |
if (sval >= -0x8000 && sval < 0x8000) { |
| 648 |
tcg_out_insn(s, RI, LGHI, ret, sval); |
| 649 |
return;
|
| 650 |
} |
| 651 |
|
| 652 |
for (i = 0; i < 4; i++) { |
| 653 |
tcg_target_long mask = 0xffffull << i*16; |
| 654 |
if ((uval & mask) == uval) {
|
| 655 |
tcg_out_insn_RI(s, lli_insns[i], ret, uval >> i*16);
|
| 656 |
return;
|
| 657 |
} |
| 658 |
} |
| 659 |
|
| 660 |
/* Try all 48-bit insns that can load it in one go. */
|
| 661 |
if (facilities & FACILITY_EXT_IMM) {
|
| 662 |
if (sval == (int32_t)sval) {
|
| 663 |
tcg_out_insn(s, RIL, LGFI, ret, sval); |
| 664 |
return;
|
| 665 |
} |
| 666 |
if (uval <= 0xffffffff) { |
| 667 |
tcg_out_insn(s, RIL, LLILF, ret, uval); |
| 668 |
return;
|
| 669 |
} |
| 670 |
if ((uval & 0xffffffff) == 0) { |
| 671 |
tcg_out_insn(s, RIL, LLIHF, ret, uval >> 31 >> 1); |
| 672 |
return;
|
| 673 |
} |
| 674 |
} |
| 675 |
|
| 676 |
/* Try for PC-relative address load. */
|
| 677 |
if ((sval & 1) == 0) { |
| 678 |
intptr_t off = (sval - (intptr_t)s->code_ptr) >> 1;
|
| 679 |
if (off == (int32_t)off) {
|
| 680 |
tcg_out_insn(s, RIL, LARL, ret, off); |
| 681 |
return;
|
| 682 |
} |
| 683 |
} |
| 684 |
|
| 685 |
/* If extended immediates are not present, then we may have to issue
|
| 686 |
several instructions to load the low 32 bits. */
|
| 687 |
if (!(facilities & FACILITY_EXT_IMM)) {
|
| 688 |
/* A 32-bit unsigned value can be loaded in 2 insns. And given
|
| 689 |
that the lli_insns loop above did not succeed, we know that
|
| 690 |
both insns are required. */
|
| 691 |
if (uval <= 0xffffffff) { |
| 692 |
tcg_out_insn(s, RI, LLILL, ret, uval); |
| 693 |
tcg_out_insn(s, RI, IILH, ret, uval >> 16);
|
| 694 |
return;
|
| 695 |
} |
| 696 |
|
| 697 |
/* If all high bits are set, the value can be loaded in 2 or 3 insns.
|
| 698 |
We first want to make sure that all the high bits get set. With
|
| 699 |
luck the low 16-bits can be considered negative to perform that for
|
| 700 |
free, otherwise we load an explicit -1. */
|
| 701 |
if (sval >> 31 >> 1 == -1) { |
| 702 |
if (uval & 0x8000) { |
| 703 |
tcg_out_insn(s, RI, LGHI, ret, uval); |
| 704 |
} else {
|
| 705 |
tcg_out_insn(s, RI, LGHI, ret, -1);
|
| 706 |
tcg_out_insn(s, RI, IILL, ret, uval); |
| 707 |
} |
| 708 |
tcg_out_insn(s, RI, IILH, ret, uval >> 16);
|
| 709 |
return;
|
| 710 |
} |
| 711 |
} |
| 712 |
|
| 713 |
/* If we get here, both the high and low parts have non-zero bits. */
|
| 714 |
|
| 715 |
/* Recurse to load the lower 32-bits. */
|
| 716 |
tcg_out_movi(s, TCG_TYPE_I64, ret, uval & 0xffffffff);
|
| 717 |
|
| 718 |
/* Insert data into the high 32-bits. */
|
| 719 |
uval = uval >> 31 >> 1; |
| 720 |
if (facilities & FACILITY_EXT_IMM) {
|
| 721 |
if (uval < 0x10000) { |
| 722 |
tcg_out_insn(s, RI, IIHL, ret, uval); |
| 723 |
} else if ((uval & 0xffff) == 0) { |
| 724 |
tcg_out_insn(s, RI, IIHH, ret, uval >> 16);
|
| 725 |
} else {
|
| 726 |
tcg_out_insn(s, RIL, IIHF, ret, uval); |
| 727 |
} |
| 728 |
} else {
|
| 729 |
if (uval & 0xffff) { |
| 730 |
tcg_out_insn(s, RI, IIHL, ret, uval); |
| 731 |
} |
| 732 |
if (uval & 0xffff0000) { |
| 733 |
tcg_out_insn(s, RI, IIHH, ret, uval >> 16);
|
| 734 |
} |
| 735 |
} |
| 736 |
} |
| 737 |
|
| 738 |
|
| 739 |
/* Emit a load/store type instruction. Inputs are:
|
| 740 |
DATA: The register to be loaded or stored.
|
| 741 |
BASE+OFS: The effective address.
|
| 742 |
OPC_RX: If the operation has an RX format opcode (e.g. STC), otherwise 0.
|
| 743 |
OPC_RXY: The RXY format opcode for the operation (e.g. STCY). */
|
| 744 |
|
| 745 |
static void tcg_out_mem(TCGContext *s, S390Opcode opc_rx, S390Opcode opc_rxy, |
| 746 |
TCGReg data, TCGReg base, TCGReg index, |
| 747 |
tcg_target_long ofs) |
| 748 |
{
|
| 749 |
if (ofs < -0x80000 || ofs >= 0x80000) { |
| 750 |
/* Combine the low 20 bits of the offset with the actual load insn;
|
| 751 |
the high 44 bits must come from an immediate load. */
|
| 752 |
tcg_target_long low = ((ofs & 0xfffff) ^ 0x80000) - 0x80000; |
| 753 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs - low); |
| 754 |
ofs = low; |
| 755 |
|
| 756 |
/* If we were already given an index register, add it in. */
|
| 757 |
if (index != TCG_REG_NONE) {
|
| 758 |
tcg_out_insn(s, RRE, AGR, TCG_TMP0, index); |
| 759 |
} |
| 760 |
index = TCG_TMP0; |
| 761 |
} |
| 762 |
|
| 763 |
if (opc_rx && ofs >= 0 && ofs < 0x1000) { |
| 764 |
tcg_out_insn_RX(s, opc_rx, data, base, index, ofs); |
| 765 |
} else {
|
| 766 |
tcg_out_insn_RXY(s, opc_rxy, data, base, index, ofs); |
| 767 |
} |
| 768 |
} |
| 769 |
|
| 770 |
|
| 771 |
/* load data without address translation or endianness conversion */
|
| 772 |
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data, |
| 773 |
TCGReg base, intptr_t ofs) |
| 774 |
{
|
| 775 |
if (type == TCG_TYPE_I32) {
|
| 776 |
tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs); |
| 777 |
} else {
|
| 778 |
tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs);
|
| 779 |
} |
| 780 |
} |
| 781 |
|
| 782 |
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data, |
| 783 |
TCGReg base, intptr_t ofs) |
| 784 |
{
|
| 785 |
if (type == TCG_TYPE_I32) {
|
| 786 |
tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs); |
| 787 |
} else {
|
| 788 |
tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs);
|
| 789 |
} |
| 790 |
} |
| 791 |
|
| 792 |
/* load data from an absolute host address */
|
| 793 |
static void tcg_out_ld_abs(TCGContext *s, TCGType type, TCGReg dest, void *abs) |
| 794 |
{
|
| 795 |
tcg_target_long addr = (tcg_target_long)abs; |
| 796 |
|
| 797 |
if (facilities & FACILITY_GEN_INST_EXT) {
|
| 798 |
tcg_target_long disp = (addr - (tcg_target_long)s->code_ptr) >> 1;
|
| 799 |
if (disp == (int32_t)disp) {
|
| 800 |
if (type == TCG_TYPE_I32) {
|
| 801 |
tcg_out_insn(s, RIL, LRL, dest, disp); |
| 802 |
} else {
|
| 803 |
tcg_out_insn(s, RIL, LGRL, dest, disp); |
| 804 |
} |
| 805 |
return;
|
| 806 |
} |
| 807 |
} |
| 808 |
|
| 809 |
tcg_out_movi(s, TCG_TYPE_PTR, dest, addr & ~0xffff);
|
| 810 |
tcg_out_ld(s, type, dest, dest, addr & 0xffff);
|
| 811 |
} |
| 812 |
|
| 813 |
static inline void tcg_out_risbg(TCGContext *s, TCGReg dest, TCGReg src, |
| 814 |
int msb, int lsb, int ofs, int z) |
| 815 |
{
|
| 816 |
/* Format RIE-f */
|
| 817 |
tcg_out16(s, (RIE_RISBG & 0xff00) | (dest << 4) | src); |
| 818 |
tcg_out16(s, (msb << 8) | (z << 7) | lsb); |
| 819 |
tcg_out16(s, (ofs << 8) | (RIE_RISBG & 0xff)); |
| 820 |
} |
| 821 |
|
| 822 |
static void tgen_ext8s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) |
| 823 |
{
|
| 824 |
if (facilities & FACILITY_EXT_IMM) {
|
| 825 |
tcg_out_insn(s, RRE, LGBR, dest, src); |
| 826 |
return;
|
| 827 |
} |
| 828 |
|
| 829 |
if (type == TCG_TYPE_I32) {
|
| 830 |
if (dest == src) {
|
| 831 |
tcg_out_sh32(s, RS_SLL, dest, TCG_REG_NONE, 24);
|
| 832 |
} else {
|
| 833 |
tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 24);
|
| 834 |
} |
| 835 |
tcg_out_sh32(s, RS_SRA, dest, TCG_REG_NONE, 24);
|
| 836 |
} else {
|
| 837 |
tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 56);
|
| 838 |
tcg_out_sh64(s, RSY_SRAG, dest, dest, TCG_REG_NONE, 56);
|
| 839 |
} |
| 840 |
} |
| 841 |
|
| 842 |
static void tgen_ext8u(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) |
| 843 |
{
|
| 844 |
if (facilities & FACILITY_EXT_IMM) {
|
| 845 |
tcg_out_insn(s, RRE, LLGCR, dest, src); |
| 846 |
return;
|
| 847 |
} |
| 848 |
|
| 849 |
if (dest == src) {
|
| 850 |
tcg_out_movi(s, type, TCG_TMP0, 0xff);
|
| 851 |
src = TCG_TMP0; |
| 852 |
} else {
|
| 853 |
tcg_out_movi(s, type, dest, 0xff);
|
| 854 |
} |
| 855 |
if (type == TCG_TYPE_I32) {
|
| 856 |
tcg_out_insn(s, RR, NR, dest, src); |
| 857 |
} else {
|
| 858 |
tcg_out_insn(s, RRE, NGR, dest, src); |
| 859 |
} |
| 860 |
} |
| 861 |
|
| 862 |
static void tgen_ext16s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) |
| 863 |
{
|
| 864 |
if (facilities & FACILITY_EXT_IMM) {
|
| 865 |
tcg_out_insn(s, RRE, LGHR, dest, src); |
| 866 |
return;
|
| 867 |
} |
| 868 |
|
| 869 |
if (type == TCG_TYPE_I32) {
|
| 870 |
if (dest == src) {
|
| 871 |
tcg_out_sh32(s, RS_SLL, dest, TCG_REG_NONE, 16);
|
| 872 |
} else {
|
| 873 |
tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 16);
|
| 874 |
} |
| 875 |
tcg_out_sh32(s, RS_SRA, dest, TCG_REG_NONE, 16);
|
| 876 |
} else {
|
| 877 |
tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 48);
|
| 878 |
tcg_out_sh64(s, RSY_SRAG, dest, dest, TCG_REG_NONE, 48);
|
| 879 |
} |
| 880 |
} |
| 881 |
|
| 882 |
static void tgen_ext16u(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) |
| 883 |
{
|
| 884 |
if (facilities & FACILITY_EXT_IMM) {
|
| 885 |
tcg_out_insn(s, RRE, LLGHR, dest, src); |
| 886 |
return;
|
| 887 |
} |
| 888 |
|
| 889 |
if (dest == src) {
|
| 890 |
tcg_out_movi(s, type, TCG_TMP0, 0xffff);
|
| 891 |
src = TCG_TMP0; |
| 892 |
} else {
|
| 893 |
tcg_out_movi(s, type, dest, 0xffff);
|
| 894 |
} |
| 895 |
if (type == TCG_TYPE_I32) {
|
| 896 |
tcg_out_insn(s, RR, NR, dest, src); |
| 897 |
} else {
|
| 898 |
tcg_out_insn(s, RRE, NGR, dest, src); |
| 899 |
} |
| 900 |
} |
| 901 |
|
| 902 |
static inline void tgen_ext32s(TCGContext *s, TCGReg dest, TCGReg src) |
| 903 |
{
|
| 904 |
tcg_out_insn(s, RRE, LGFR, dest, src); |
| 905 |
} |
| 906 |
|
| 907 |
static inline void tgen_ext32u(TCGContext *s, TCGReg dest, TCGReg src) |
| 908 |
{
|
| 909 |
tcg_out_insn(s, RRE, LLGFR, dest, src); |
| 910 |
} |
| 911 |
|
| 912 |
/* Accept bit patterns like these:
|
| 913 |
0....01....1
|
| 914 |
1....10....0
|
| 915 |
1..10..01..1
|
| 916 |
0..01..10..0
|
| 917 |
Copied from gcc sources. */
|
| 918 |
static inline bool risbg_mask(uint64_t c) |
| 919 |
{
|
| 920 |
uint64_t lsb; |
| 921 |
/* We don't change the number of transitions by inverting,
|
| 922 |
so make sure we start with the LSB zero. */
|
| 923 |
if (c & 1) { |
| 924 |
c = ~c; |
| 925 |
} |
| 926 |
/* Reject all zeros or all ones. */
|
| 927 |
if (c == 0) { |
| 928 |
return false; |
| 929 |
} |
| 930 |
/* Find the first transition. */
|
| 931 |
lsb = c & -c; |
| 932 |
/* Invert to look for a second transition. */
|
| 933 |
c = ~c; |
| 934 |
/* Erase the first transition. */
|
| 935 |
c &= -lsb; |
| 936 |
/* Find the second transition, if any. */
|
| 937 |
lsb = c & -c; |
| 938 |
/* Match if all the bits are 1's, or if c is zero. */
|
| 939 |
return c == -lsb;
|
| 940 |
} |
| 941 |
|
| 942 |
static void tgen_andi(TCGContext *s, TCGType type, TCGReg dest, uint64_t val) |
| 943 |
{
|
| 944 |
static const S390Opcode ni_insns[4] = { |
| 945 |
RI_NILL, RI_NILH, RI_NIHL, RI_NIHH |
| 946 |
}; |
| 947 |
static const S390Opcode nif_insns[2] = { |
| 948 |
RIL_NILF, RIL_NIHF |
| 949 |
}; |
| 950 |
uint64_t valid = (type == TCG_TYPE_I32 ? 0xffffffffull : -1ull); |
| 951 |
int i;
|
| 952 |
|
| 953 |
/* Look for the zero-extensions. */
|
| 954 |
if ((val & valid) == 0xffffffff) { |
| 955 |
tgen_ext32u(s, dest, dest); |
| 956 |
return;
|
| 957 |
} |
| 958 |
if (facilities & FACILITY_EXT_IMM) {
|
| 959 |
if ((val & valid) == 0xff) { |
| 960 |
tgen_ext8u(s, TCG_TYPE_I64, dest, dest); |
| 961 |
return;
|
| 962 |
} |
| 963 |
if ((val & valid) == 0xffff) { |
| 964 |
tgen_ext16u(s, TCG_TYPE_I64, dest, dest); |
| 965 |
return;
|
| 966 |
} |
| 967 |
} |
| 968 |
|
| 969 |
/* Try all 32-bit insns that can perform it in one go. */
|
| 970 |
for (i = 0; i < 4; i++) { |
| 971 |
tcg_target_ulong mask = ~(0xffffull << i*16); |
| 972 |
if (((val | ~valid) & mask) == mask) {
|
| 973 |
tcg_out_insn_RI(s, ni_insns[i], dest, val >> i*16);
|
| 974 |
return;
|
| 975 |
} |
| 976 |
} |
| 977 |
|
| 978 |
/* Try all 48-bit insns that can perform it in one go. */
|
| 979 |
if (facilities & FACILITY_EXT_IMM) {
|
| 980 |
for (i = 0; i < 2; i++) { |
| 981 |
tcg_target_ulong mask = ~(0xffffffffull << i*32); |
| 982 |
if (((val | ~valid) & mask) == mask) {
|
| 983 |
tcg_out_insn_RIL(s, nif_insns[i], dest, val >> i*32);
|
| 984 |
return;
|
| 985 |
} |
| 986 |
} |
| 987 |
} |
| 988 |
if ((facilities & FACILITY_GEN_INST_EXT) && risbg_mask(val)) {
|
| 989 |
int msb, lsb;
|
| 990 |
if ((val & 0x8000000000000001ull) == 0x8000000000000001ull) { |
| 991 |
/* Achieve wraparound by swapping msb and lsb. */
|
| 992 |
msb = 63 - ctz64(~val);
|
| 993 |
lsb = clz64(~val) + 1;
|
| 994 |
} else {
|
| 995 |
msb = clz64(val); |
| 996 |
lsb = 63 - ctz64(val);
|
| 997 |
} |
| 998 |
tcg_out_risbg(s, dest, dest, msb, lsb, 0, 1); |
| 999 |
return;
|
| 1000 |
} |
| 1001 |
|
| 1002 |
/* Fall back to loading the constant. */
|
| 1003 |
tcg_out_movi(s, type, TCG_TMP0, val); |
| 1004 |
if (type == TCG_TYPE_I32) {
|
| 1005 |
tcg_out_insn(s, RR, NR, dest, TCG_TMP0); |
| 1006 |
} else {
|
| 1007 |
tcg_out_insn(s, RRE, NGR, dest, TCG_TMP0); |
| 1008 |
} |
| 1009 |
} |
| 1010 |
|
| 1011 |
static void tgen64_ori(TCGContext *s, TCGReg dest, tcg_target_ulong val) |
| 1012 |
{
|
| 1013 |
static const S390Opcode oi_insns[4] = { |
| 1014 |
RI_OILL, RI_OILH, RI_OIHL, RI_OIHH |
| 1015 |
}; |
| 1016 |
static const S390Opcode nif_insns[2] = { |
| 1017 |
RIL_OILF, RIL_OIHF |
| 1018 |
}; |
| 1019 |
|
| 1020 |
int i;
|
| 1021 |
|
| 1022 |
/* Look for no-op. */
|
| 1023 |
if (val == 0) { |
| 1024 |
return;
|
| 1025 |
} |
| 1026 |
|
| 1027 |
if (facilities & FACILITY_EXT_IMM) {
|
| 1028 |
/* Try all 32-bit insns that can perform it in one go. */
|
| 1029 |
for (i = 0; i < 4; i++) { |
| 1030 |
tcg_target_ulong mask = (0xffffull << i*16); |
| 1031 |
if ((val & mask) != 0 && (val & ~mask) == 0) { |
| 1032 |
tcg_out_insn_RI(s, oi_insns[i], dest, val >> i*16);
|
| 1033 |
return;
|
| 1034 |
} |
| 1035 |
} |
| 1036 |
|
| 1037 |
/* Try all 48-bit insns that can perform it in one go. */
|
| 1038 |
for (i = 0; i < 2; i++) { |
| 1039 |
tcg_target_ulong mask = (0xffffffffull << i*32); |
| 1040 |
if ((val & mask) != 0 && (val & ~mask) == 0) { |
| 1041 |
tcg_out_insn_RIL(s, nif_insns[i], dest, val >> i*32);
|
| 1042 |
return;
|
| 1043 |
} |
| 1044 |
} |
| 1045 |
|
| 1046 |
/* Perform the OR via sequential modifications to the high and
|
| 1047 |
low parts. Do this via recursion to handle 16-bit vs 32-bit
|
| 1048 |
masks in each half. */
|
| 1049 |
tgen64_ori(s, dest, val & 0x00000000ffffffffull);
|
| 1050 |
tgen64_ori(s, dest, val & 0xffffffff00000000ull);
|
| 1051 |
} else {
|
| 1052 |
/* With no extended-immediate facility, we don't need to be so
|
| 1053 |
clever. Just iterate over the insns and mask in the constant. */
|
| 1054 |
for (i = 0; i < 4; i++) { |
| 1055 |
tcg_target_ulong mask = (0xffffull << i*16); |
| 1056 |
if ((val & mask) != 0) { |
| 1057 |
tcg_out_insn_RI(s, oi_insns[i], dest, val >> i*16);
|
| 1058 |
} |
| 1059 |
} |
| 1060 |
} |
| 1061 |
} |
| 1062 |
|
| 1063 |
static void tgen64_xori(TCGContext *s, TCGReg dest, tcg_target_ulong val) |
| 1064 |
{
|
| 1065 |
/* Perform the xor by parts. */
|
| 1066 |
if (val & 0xffffffff) { |
| 1067 |
tcg_out_insn(s, RIL, XILF, dest, val); |
| 1068 |
} |
| 1069 |
if (val > 0xffffffff) { |
| 1070 |
tcg_out_insn(s, RIL, XIHF, dest, val >> 31 >> 1); |
| 1071 |
} |
| 1072 |
} |
| 1073 |
|
| 1074 |
static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, |
| 1075 |
TCGArg c2, int c2const)
|
| 1076 |
{
|
| 1077 |
bool is_unsigned = is_unsigned_cond(c);
|
| 1078 |
if (c2const) {
|
| 1079 |
if (c2 == 0) { |
| 1080 |
if (type == TCG_TYPE_I32) {
|
| 1081 |
tcg_out_insn(s, RR, LTR, r1, r1); |
| 1082 |
} else {
|
| 1083 |
tcg_out_insn(s, RRE, LTGR, r1, r1); |
| 1084 |
} |
| 1085 |
return tcg_cond_to_ltr_cond[c];
|
| 1086 |
} else {
|
| 1087 |
if (is_unsigned) {
|
| 1088 |
if (type == TCG_TYPE_I32) {
|
| 1089 |
tcg_out_insn(s, RIL, CLFI, r1, c2); |
| 1090 |
} else {
|
| 1091 |
tcg_out_insn(s, RIL, CLGFI, r1, c2); |
| 1092 |
} |
| 1093 |
} else {
|
| 1094 |
if (type == TCG_TYPE_I32) {
|
| 1095 |
tcg_out_insn(s, RIL, CFI, r1, c2); |
| 1096 |
} else {
|
| 1097 |
tcg_out_insn(s, RIL, CGFI, r1, c2); |
| 1098 |
} |
| 1099 |
} |
| 1100 |
} |
| 1101 |
} else {
|
| 1102 |
if (is_unsigned) {
|
| 1103 |
if (type == TCG_TYPE_I32) {
|
| 1104 |
tcg_out_insn(s, RR, CLR, r1, c2); |
| 1105 |
} else {
|
| 1106 |
tcg_out_insn(s, RRE, CLGR, r1, c2); |
| 1107 |
} |
| 1108 |
} else {
|
| 1109 |
if (type == TCG_TYPE_I32) {
|
| 1110 |
tcg_out_insn(s, RR, CR, r1, c2); |
| 1111 |
} else {
|
| 1112 |
tcg_out_insn(s, RRE, CGR, r1, c2); |
| 1113 |
} |
| 1114 |
} |
| 1115 |
} |
| 1116 |
return tcg_cond_to_s390_cond[c];
|
| 1117 |
} |
| 1118 |
|
| 1119 |
static void tgen_setcond(TCGContext *s, TCGType type, TCGCond c, |
| 1120 |
TCGReg dest, TCGReg c1, TCGArg c2, int c2const)
|
| 1121 |
{
|
| 1122 |
int cc = tgen_cmp(s, type, c, c1, c2, c2const);
|
| 1123 |
|
| 1124 |
/* Emit: r1 = 1; if (cc) goto over; r1 = 0; over: */
|
| 1125 |
tcg_out_movi(s, type, dest, 1);
|
| 1126 |
tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); |
| 1127 |
tcg_out_movi(s, type, dest, 0);
|
| 1128 |
} |
| 1129 |
|
| 1130 |
static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest, |
| 1131 |
TCGReg c1, TCGArg c2, int c2const, TCGReg r3)
|
| 1132 |
{
|
| 1133 |
int cc;
|
| 1134 |
if (facilities & FACILITY_LOAD_ON_COND) {
|
| 1135 |
cc = tgen_cmp(s, type, c, c1, c2, c2const); |
| 1136 |
tcg_out_insn(s, RRF, LOCGR, dest, r3, cc); |
| 1137 |
} else {
|
| 1138 |
c = tcg_invert_cond(c); |
| 1139 |
cc = tgen_cmp(s, type, c, c1, c2, c2const); |
| 1140 |
|
| 1141 |
/* Emit: if (cc) goto over; dest = r3; over: */
|
| 1142 |
tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); |
| 1143 |
tcg_out_insn(s, RRE, LGR, dest, r3); |
| 1144 |
} |
| 1145 |
} |
| 1146 |
|
| 1147 |
bool tcg_target_deposit_valid(int ofs, int len) |
| 1148 |
{
|
| 1149 |
return (facilities & FACILITY_GEN_INST_EXT) != 0; |
| 1150 |
} |
| 1151 |
|
| 1152 |
static void tgen_deposit(TCGContext *s, TCGReg dest, TCGReg src, |
| 1153 |
int ofs, int len) |
| 1154 |
{
|
| 1155 |
int lsb = (63 - ofs); |
| 1156 |
int msb = lsb - (len - 1); |
| 1157 |
tcg_out_risbg(s, dest, src, msb, lsb, ofs, 0);
|
| 1158 |
} |
| 1159 |
|
| 1160 |
static void tgen_gotoi(TCGContext *s, int cc, tcg_target_long dest) |
| 1161 |
{
|
| 1162 |
tcg_target_long off = (dest - (tcg_target_long)s->code_ptr) >> 1;
|
| 1163 |
if (off > -0x8000 && off < 0x7fff) { |
| 1164 |
tcg_out_insn(s, RI, BRC, cc, off); |
| 1165 |
} else if (off == (int32_t)off) { |
| 1166 |
tcg_out_insn(s, RIL, BRCL, cc, off); |
| 1167 |
} else {
|
| 1168 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, dest); |
| 1169 |
tcg_out_insn(s, RR, BCR, cc, TCG_TMP0); |
| 1170 |
} |
| 1171 |
} |
| 1172 |
|
| 1173 |
static void tgen_branch(TCGContext *s, int cc, int labelno) |
| 1174 |
{
|
| 1175 |
TCGLabel* l = &s->labels[labelno]; |
| 1176 |
if (l->has_value) {
|
| 1177 |
tgen_gotoi(s, cc, l->u.value); |
| 1178 |
} else if (USE_LONG_BRANCHES) { |
| 1179 |
tcg_out16(s, RIL_BRCL | (cc << 4));
|
| 1180 |
tcg_out_reloc(s, s->code_ptr, R_390_PC32DBL, labelno, -2);
|
| 1181 |
s->code_ptr += 4;
|
| 1182 |
} else {
|
| 1183 |
tcg_out16(s, RI_BRC | (cc << 4));
|
| 1184 |
tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, labelno, -2);
|
| 1185 |
s->code_ptr += 2;
|
| 1186 |
} |
| 1187 |
} |
| 1188 |
|
| 1189 |
static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc, |
| 1190 |
TCGReg r1, TCGReg r2, int labelno)
|
| 1191 |
{
|
| 1192 |
TCGLabel* l = &s->labels[labelno]; |
| 1193 |
tcg_target_long off; |
| 1194 |
|
| 1195 |
if (l->has_value) {
|
| 1196 |
off = (l->u.value - (tcg_target_long)s->code_ptr) >> 1;
|
| 1197 |
} else {
|
| 1198 |
/* We need to keep the offset unchanged for retranslation. */
|
| 1199 |
off = ((int16_t *)s->code_ptr)[1];
|
| 1200 |
tcg_out_reloc(s, s->code_ptr + 2, R_390_PC16DBL, labelno, -2); |
| 1201 |
} |
| 1202 |
|
| 1203 |
tcg_out16(s, (opc & 0xff00) | (r1 << 4) | r2); |
| 1204 |
tcg_out16(s, off); |
| 1205 |
tcg_out16(s, cc << 12 | (opc & 0xff)); |
| 1206 |
} |
| 1207 |
|
| 1208 |
static void tgen_compare_imm_branch(TCGContext *s, S390Opcode opc, int cc, |
| 1209 |
TCGReg r1, int i2, int labelno) |
| 1210 |
{
|
| 1211 |
TCGLabel* l = &s->labels[labelno]; |
| 1212 |
tcg_target_long off; |
| 1213 |
|
| 1214 |
if (l->has_value) {
|
| 1215 |
off = (l->u.value - (tcg_target_long)s->code_ptr) >> 1;
|
| 1216 |
} else {
|
| 1217 |
/* We need to keep the offset unchanged for retranslation. */
|
| 1218 |
off = ((int16_t *)s->code_ptr)[1];
|
| 1219 |
tcg_out_reloc(s, s->code_ptr + 2, R_390_PC16DBL, labelno, -2); |
| 1220 |
} |
| 1221 |
|
| 1222 |
tcg_out16(s, (opc & 0xff00) | (r1 << 4) | cc); |
| 1223 |
tcg_out16(s, off); |
| 1224 |
tcg_out16(s, (i2 << 8) | (opc & 0xff)); |
| 1225 |
} |
| 1226 |
|
| 1227 |
static void tgen_brcond(TCGContext *s, TCGType type, TCGCond c, |
| 1228 |
TCGReg r1, TCGArg c2, int c2const, int labelno) |
| 1229 |
{
|
| 1230 |
int cc;
|
| 1231 |
|
| 1232 |
if (facilities & FACILITY_GEN_INST_EXT) {
|
| 1233 |
bool is_unsigned = is_unsigned_cond(c);
|
| 1234 |
bool in_range;
|
| 1235 |
S390Opcode opc; |
| 1236 |
|
| 1237 |
cc = tcg_cond_to_s390_cond[c]; |
| 1238 |
|
| 1239 |
if (!c2const) {
|
| 1240 |
opc = (type == TCG_TYPE_I32 |
| 1241 |
? (is_unsigned ? RIE_CLRJ : RIE_CRJ) |
| 1242 |
: (is_unsigned ? RIE_CLGRJ : RIE_CGRJ)); |
| 1243 |
tgen_compare_branch(s, opc, cc, r1, c2, labelno); |
| 1244 |
return;
|
| 1245 |
} |
| 1246 |
|
| 1247 |
/* COMPARE IMMEDIATE AND BRANCH RELATIVE has an 8-bit immediate field.
|
| 1248 |
If the immediate we've been given does not fit that range, we'll
|
| 1249 |
fall back to separate compare and branch instructions using the
|
| 1250 |
larger comparison range afforded by COMPARE IMMEDIATE. */
|
| 1251 |
if (type == TCG_TYPE_I32) {
|
| 1252 |
if (is_unsigned) {
|
| 1253 |
opc = RIE_CLIJ; |
| 1254 |
in_range = (uint32_t)c2 == (uint8_t)c2; |
| 1255 |
} else {
|
| 1256 |
opc = RIE_CIJ; |
| 1257 |
in_range = (int32_t)c2 == (int8_t)c2; |
| 1258 |
} |
| 1259 |
} else {
|
| 1260 |
if (is_unsigned) {
|
| 1261 |
opc = RIE_CLGIJ; |
| 1262 |
in_range = (uint64_t)c2 == (uint8_t)c2; |
| 1263 |
} else {
|
| 1264 |
opc = RIE_CGIJ; |
| 1265 |
in_range = (int64_t)c2 == (int8_t)c2; |
| 1266 |
} |
| 1267 |
} |
| 1268 |
if (in_range) {
|
| 1269 |
tgen_compare_imm_branch(s, opc, cc, r1, c2, labelno); |
| 1270 |
return;
|
| 1271 |
} |
| 1272 |
} |
| 1273 |
|
| 1274 |
cc = tgen_cmp(s, type, c, r1, c2, c2const); |
| 1275 |
tgen_branch(s, cc, labelno); |
| 1276 |
} |
| 1277 |
|
| 1278 |
static void tgen_calli(TCGContext *s, tcg_target_long dest) |
| 1279 |
{
|
| 1280 |
tcg_target_long off = (dest - (tcg_target_long)s->code_ptr) >> 1;
|
| 1281 |
if (off == (int32_t)off) {
|
| 1282 |
tcg_out_insn(s, RIL, BRASL, TCG_REG_R14, off); |
| 1283 |
} else {
|
| 1284 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, dest); |
| 1285 |
tcg_out_insn(s, RR, BASR, TCG_REG_R14, TCG_TMP0); |
| 1286 |
} |
| 1287 |
} |
| 1288 |
|
| 1289 |
static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data, |
| 1290 |
TCGReg base, TCGReg index, int disp)
|
| 1291 |
{
|
| 1292 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 1293 |
const int bswap = 0; |
| 1294 |
#else
|
| 1295 |
const int bswap = 1; |
| 1296 |
#endif
|
| 1297 |
switch (opc) {
|
| 1298 |
case LD_UINT8:
|
| 1299 |
tcg_out_insn(s, RXY, LLGC, data, base, index, disp); |
| 1300 |
break;
|
| 1301 |
case LD_INT8:
|
| 1302 |
tcg_out_insn(s, RXY, LGB, data, base, index, disp); |
| 1303 |
break;
|
| 1304 |
case LD_UINT16:
|
| 1305 |
if (bswap) {
|
| 1306 |
/* swapped unsigned halfword load with upper bits zeroed */
|
| 1307 |
tcg_out_insn(s, RXY, LRVH, data, base, index, disp); |
| 1308 |
tgen_ext16u(s, TCG_TYPE_I64, data, data); |
| 1309 |
} else {
|
| 1310 |
tcg_out_insn(s, RXY, LLGH, data, base, index, disp); |
| 1311 |
} |
| 1312 |
break;
|
| 1313 |
case LD_INT16:
|
| 1314 |
if (bswap) {
|
| 1315 |
/* swapped sign-extended halfword load */
|
| 1316 |
tcg_out_insn(s, RXY, LRVH, data, base, index, disp); |
| 1317 |
tgen_ext16s(s, TCG_TYPE_I64, data, data); |
| 1318 |
} else {
|
| 1319 |
tcg_out_insn(s, RXY, LGH, data, base, index, disp); |
| 1320 |
} |
| 1321 |
break;
|
| 1322 |
case LD_UINT32:
|
| 1323 |
if (bswap) {
|
| 1324 |
/* swapped unsigned int load with upper bits zeroed */
|
| 1325 |
tcg_out_insn(s, RXY, LRV, data, base, index, disp); |
| 1326 |
tgen_ext32u(s, data, data); |
| 1327 |
} else {
|
| 1328 |
tcg_out_insn(s, RXY, LLGF, data, base, index, disp); |
| 1329 |
} |
| 1330 |
break;
|
| 1331 |
case LD_INT32:
|
| 1332 |
if (bswap) {
|
| 1333 |
/* swapped sign-extended int load */
|
| 1334 |
tcg_out_insn(s, RXY, LRV, data, base, index, disp); |
| 1335 |
tgen_ext32s(s, data, data); |
| 1336 |
} else {
|
| 1337 |
tcg_out_insn(s, RXY, LGF, data, base, index, disp); |
| 1338 |
} |
| 1339 |
break;
|
| 1340 |
case LD_UINT64:
|
| 1341 |
if (bswap) {
|
| 1342 |
tcg_out_insn(s, RXY, LRVG, data, base, index, disp); |
| 1343 |
} else {
|
| 1344 |
tcg_out_insn(s, RXY, LG, data, base, index, disp); |
| 1345 |
} |
| 1346 |
break;
|
| 1347 |
default:
|
| 1348 |
tcg_abort(); |
| 1349 |
} |
| 1350 |
} |
| 1351 |
|
| 1352 |
static void tcg_out_qemu_st_direct(TCGContext *s, int opc, TCGReg data, |
| 1353 |
TCGReg base, TCGReg index, int disp)
|
| 1354 |
{
|
| 1355 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 1356 |
const int bswap = 0; |
| 1357 |
#else
|
| 1358 |
const int bswap = 1; |
| 1359 |
#endif
|
| 1360 |
switch (opc) {
|
| 1361 |
case LD_UINT8:
|
| 1362 |
if (disp >= 0 && disp < 0x1000) { |
| 1363 |
tcg_out_insn(s, RX, STC, data, base, index, disp); |
| 1364 |
} else {
|
| 1365 |
tcg_out_insn(s, RXY, STCY, data, base, index, disp); |
| 1366 |
} |
| 1367 |
break;
|
| 1368 |
case LD_UINT16:
|
| 1369 |
if (bswap) {
|
| 1370 |
tcg_out_insn(s, RXY, STRVH, data, base, index, disp); |
| 1371 |
} else if (disp >= 0 && disp < 0x1000) { |
| 1372 |
tcg_out_insn(s, RX, STH, data, base, index, disp); |
| 1373 |
} else {
|
| 1374 |
tcg_out_insn(s, RXY, STHY, data, base, index, disp); |
| 1375 |
} |
| 1376 |
break;
|
| 1377 |
case LD_UINT32:
|
| 1378 |
if (bswap) {
|
| 1379 |
tcg_out_insn(s, RXY, STRV, data, base, index, disp); |
| 1380 |
} else if (disp >= 0 && disp < 0x1000) { |
| 1381 |
tcg_out_insn(s, RX, ST, data, base, index, disp); |
| 1382 |
} else {
|
| 1383 |
tcg_out_insn(s, RXY, STY, data, base, index, disp); |
| 1384 |
} |
| 1385 |
break;
|
| 1386 |
case LD_UINT64:
|
| 1387 |
if (bswap) {
|
| 1388 |
tcg_out_insn(s, RXY, STRVG, data, base, index, disp); |
| 1389 |
} else {
|
| 1390 |
tcg_out_insn(s, RXY, STG, data, base, index, disp); |
| 1391 |
} |
| 1392 |
break;
|
| 1393 |
default:
|
| 1394 |
tcg_abort(); |
| 1395 |
} |
| 1396 |
} |
| 1397 |
|
| 1398 |
#if defined(CONFIG_SOFTMMU)
|
| 1399 |
static TCGReg tcg_prepare_qemu_ldst(TCGContext* s, TCGReg data_reg,
|
| 1400 |
TCGReg addr_reg, int mem_index, int opc, |
| 1401 |
uint16_t **label2_ptr_p, int is_store)
|
| 1402 |
{
|
| 1403 |
const TCGReg arg0 = tcg_target_call_iarg_regs[0]; |
| 1404 |
const TCGReg arg1 = tcg_target_call_iarg_regs[1]; |
| 1405 |
const TCGReg arg2 = tcg_target_call_iarg_regs[2]; |
| 1406 |
const TCGReg arg3 = tcg_target_call_iarg_regs[3]; |
| 1407 |
int s_bits = opc & 3; |
| 1408 |
uint16_t *label1_ptr; |
| 1409 |
tcg_target_long ofs; |
| 1410 |
|
| 1411 |
if (TARGET_LONG_BITS == 32) { |
| 1412 |
tgen_ext32u(s, arg1, addr_reg); |
| 1413 |
} else {
|
| 1414 |
tcg_out_mov(s, TCG_TYPE_I64, arg1, addr_reg); |
| 1415 |
} |
| 1416 |
|
| 1417 |
tcg_out_sh64(s, RSY_SRLG, arg2, addr_reg, TCG_REG_NONE, |
| 1418 |
TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); |
| 1419 |
|
| 1420 |
tgen_andi(s, TCG_TYPE_I64, arg1, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); |
| 1421 |
tgen_andi(s, TCG_TYPE_I64, arg2, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
|
| 1422 |
|
| 1423 |
if (is_store) {
|
| 1424 |
ofs = offsetof(CPUArchState, tlb_table[mem_index][0].addr_write);
|
| 1425 |
} else {
|
| 1426 |
ofs = offsetof(CPUArchState, tlb_table[mem_index][0].addr_read);
|
| 1427 |
} |
| 1428 |
assert(ofs < 0x80000);
|
| 1429 |
|
| 1430 |
if (TARGET_LONG_BITS == 32) { |
| 1431 |
tcg_out_mem(s, RX_C, RXY_CY, arg1, arg2, TCG_AREG0, ofs); |
| 1432 |
} else {
|
| 1433 |
tcg_out_mem(s, 0, RXY_CG, arg1, arg2, TCG_AREG0, ofs);
|
| 1434 |
} |
| 1435 |
|
| 1436 |
if (TARGET_LONG_BITS == 32) { |
| 1437 |
tgen_ext32u(s, arg1, addr_reg); |
| 1438 |
} else {
|
| 1439 |
tcg_out_mov(s, TCG_TYPE_I64, arg1, addr_reg); |
| 1440 |
} |
| 1441 |
|
| 1442 |
label1_ptr = (uint16_t*)s->code_ptr; |
| 1443 |
|
| 1444 |
/* je label1 (offset will be patched in later) */
|
| 1445 |
tcg_out_insn(s, RI, BRC, S390_CC_EQ, 0);
|
| 1446 |
|
| 1447 |
/* call load/store helper */
|
| 1448 |
if (is_store) {
|
| 1449 |
/* Make sure to zero-extend the value to the full register
|
| 1450 |
for the calling convention. */
|
| 1451 |
switch (opc) {
|
| 1452 |
case LD_UINT8:
|
| 1453 |
tgen_ext8u(s, TCG_TYPE_I64, arg2, data_reg); |
| 1454 |
break;
|
| 1455 |
case LD_UINT16:
|
| 1456 |
tgen_ext16u(s, TCG_TYPE_I64, arg2, data_reg); |
| 1457 |
break;
|
| 1458 |
case LD_UINT32:
|
| 1459 |
tgen_ext32u(s, arg2, data_reg); |
| 1460 |
break;
|
| 1461 |
case LD_UINT64:
|
| 1462 |
tcg_out_mov(s, TCG_TYPE_I64, arg2, data_reg); |
| 1463 |
break;
|
| 1464 |
default:
|
| 1465 |
tcg_abort(); |
| 1466 |
} |
| 1467 |
tcg_out_movi(s, TCG_TYPE_I32, arg3, mem_index); |
| 1468 |
tcg_out_mov(s, TCG_TYPE_I64, arg0, TCG_AREG0); |
| 1469 |
tgen_calli(s, (tcg_target_ulong)qemu_st_helpers[s_bits]); |
| 1470 |
} else {
|
| 1471 |
tcg_out_movi(s, TCG_TYPE_I32, arg2, mem_index); |
| 1472 |
tcg_out_mov(s, TCG_TYPE_I64, arg0, TCG_AREG0); |
| 1473 |
tgen_calli(s, (tcg_target_ulong)qemu_ld_helpers[s_bits]); |
| 1474 |
|
| 1475 |
/* sign extension */
|
| 1476 |
switch (opc) {
|
| 1477 |
case LD_INT8:
|
| 1478 |
tgen_ext8s(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); |
| 1479 |
break;
|
| 1480 |
case LD_INT16:
|
| 1481 |
tgen_ext16s(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); |
| 1482 |
break;
|
| 1483 |
case LD_INT32:
|
| 1484 |
tgen_ext32s(s, data_reg, TCG_REG_R2); |
| 1485 |
break;
|
| 1486 |
default:
|
| 1487 |
/* unsigned -> just copy */
|
| 1488 |
tcg_out_mov(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); |
| 1489 |
break;
|
| 1490 |
} |
| 1491 |
} |
| 1492 |
|
| 1493 |
/* jump to label2 (end) */
|
| 1494 |
*label2_ptr_p = (uint16_t*)s->code_ptr; |
| 1495 |
|
| 1496 |
tcg_out_insn(s, RI, BRC, S390_CC_ALWAYS, 0);
|
| 1497 |
|
| 1498 |
/* this is label1, patch branch */
|
| 1499 |
*(label1_ptr + 1) = ((unsigned long)s->code_ptr - |
| 1500 |
(unsigned long)label1_ptr) >> 1; |
| 1501 |
|
| 1502 |
ofs = offsetof(CPUArchState, tlb_table[mem_index][0].addend);
|
| 1503 |
assert(ofs < 0x80000);
|
| 1504 |
|
| 1505 |
tcg_out_mem(s, 0, RXY_AG, arg1, arg2, TCG_AREG0, ofs);
|
| 1506 |
|
| 1507 |
return arg1;
|
| 1508 |
} |
| 1509 |
|
| 1510 |
static void tcg_finish_qemu_ldst(TCGContext* s, uint16_t *label2_ptr) |
| 1511 |
{
|
| 1512 |
/* patch branch */
|
| 1513 |
*(label2_ptr + 1) = ((unsigned long)s->code_ptr - |
| 1514 |
(unsigned long)label2_ptr) >> 1; |
| 1515 |
} |
| 1516 |
#else
|
| 1517 |
static void tcg_prepare_user_ldst(TCGContext *s, TCGReg *addr_reg, |
| 1518 |
TCGReg *index_reg, tcg_target_long *disp) |
| 1519 |
{
|
| 1520 |
if (TARGET_LONG_BITS == 32) { |
| 1521 |
tgen_ext32u(s, TCG_TMP0, *addr_reg); |
| 1522 |
*addr_reg = TCG_TMP0; |
| 1523 |
} |
| 1524 |
if (GUEST_BASE < 0x80000) { |
| 1525 |
*index_reg = TCG_REG_NONE; |
| 1526 |
*disp = GUEST_BASE; |
| 1527 |
} else {
|
| 1528 |
*index_reg = TCG_GUEST_BASE_REG; |
| 1529 |
*disp = 0;
|
| 1530 |
} |
| 1531 |
} |
| 1532 |
#endif /* CONFIG_SOFTMMU */ |
| 1533 |
|
| 1534 |
/* load data with address translation (if applicable)
|
| 1535 |
and endianness conversion */
|
| 1536 |
static void tcg_out_qemu_ld(TCGContext* s, const TCGArg* args, int opc) |
| 1537 |
{
|
| 1538 |
TCGReg addr_reg, data_reg; |
| 1539 |
#if defined(CONFIG_SOFTMMU)
|
| 1540 |
int mem_index;
|
| 1541 |
uint16_t *label2_ptr; |
| 1542 |
#else
|
| 1543 |
TCGReg index_reg; |
| 1544 |
tcg_target_long disp; |
| 1545 |
#endif
|
| 1546 |
|
| 1547 |
data_reg = *args++; |
| 1548 |
addr_reg = *args++; |
| 1549 |
|
| 1550 |
#if defined(CONFIG_SOFTMMU)
|
| 1551 |
mem_index = *args; |
| 1552 |
|
| 1553 |
addr_reg = tcg_prepare_qemu_ldst(s, data_reg, addr_reg, mem_index, |
| 1554 |
opc, &label2_ptr, 0);
|
| 1555 |
|
| 1556 |
tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, TCG_REG_NONE, 0);
|
| 1557 |
|
| 1558 |
tcg_finish_qemu_ldst(s, label2_ptr); |
| 1559 |
#else
|
| 1560 |
tcg_prepare_user_ldst(s, &addr_reg, &index_reg, &disp); |
| 1561 |
tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, index_reg, disp); |
| 1562 |
#endif
|
| 1563 |
} |
| 1564 |
|
| 1565 |
static void tcg_out_qemu_st(TCGContext* s, const TCGArg* args, int opc) |
| 1566 |
{
|
| 1567 |
TCGReg addr_reg, data_reg; |
| 1568 |
#if defined(CONFIG_SOFTMMU)
|
| 1569 |
int mem_index;
|
| 1570 |
uint16_t *label2_ptr; |
| 1571 |
#else
|
| 1572 |
TCGReg index_reg; |
| 1573 |
tcg_target_long disp; |
| 1574 |
#endif
|
| 1575 |
|
| 1576 |
data_reg = *args++; |
| 1577 |
addr_reg = *args++; |
| 1578 |
|
| 1579 |
#if defined(CONFIG_SOFTMMU)
|
| 1580 |
mem_index = *args; |
| 1581 |
|
| 1582 |
addr_reg = tcg_prepare_qemu_ldst(s, data_reg, addr_reg, mem_index, |
| 1583 |
opc, &label2_ptr, 1);
|
| 1584 |
|
| 1585 |
tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, TCG_REG_NONE, 0);
|
| 1586 |
|
| 1587 |
tcg_finish_qemu_ldst(s, label2_ptr); |
| 1588 |
#else
|
| 1589 |
tcg_prepare_user_ldst(s, &addr_reg, &index_reg, &disp); |
| 1590 |
tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, index_reg, disp); |
| 1591 |
#endif
|
| 1592 |
} |
| 1593 |
|
| 1594 |
# define OP_32_64(x) \
|
| 1595 |
case glue(glue(INDEX_op_,x),_i32): \
|
| 1596 |
case glue(glue(INDEX_op_,x),_i64)
|
| 1597 |
|
| 1598 |
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, |
| 1599 |
const TCGArg *args, const int *const_args) |
| 1600 |
{
|
| 1601 |
S390Opcode op; |
| 1602 |
TCGArg a0, a1, a2; |
| 1603 |
|
| 1604 |
switch (opc) {
|
| 1605 |
case INDEX_op_exit_tb:
|
| 1606 |
/* return value */
|
| 1607 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, args[0]);
|
| 1608 |
tgen_gotoi(s, S390_CC_ALWAYS, (unsigned long)tb_ret_addr); |
| 1609 |
break;
|
| 1610 |
|
| 1611 |
case INDEX_op_goto_tb:
|
| 1612 |
if (s->tb_jmp_offset) {
|
| 1613 |
tcg_abort(); |
| 1614 |
} else {
|
| 1615 |
/* load address stored at s->tb_next + args[0] */
|
| 1616 |
tcg_out_ld_abs(s, TCG_TYPE_PTR, TCG_TMP0, s->tb_next + args[0]);
|
| 1617 |
/* and go there */
|
| 1618 |
tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_TMP0); |
| 1619 |
} |
| 1620 |
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
|
| 1621 |
break;
|
| 1622 |
|
| 1623 |
case INDEX_op_call:
|
| 1624 |
if (const_args[0]) { |
| 1625 |
tgen_calli(s, args[0]);
|
| 1626 |
} else {
|
| 1627 |
tcg_out_insn(s, RR, BASR, TCG_REG_R14, args[0]);
|
| 1628 |
} |
| 1629 |
break;
|
| 1630 |
|
| 1631 |
case INDEX_op_mov_i32:
|
| 1632 |
tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]); |
| 1633 |
break;
|
| 1634 |
case INDEX_op_movi_i32:
|
| 1635 |
tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]); |
| 1636 |
break;
|
| 1637 |
|
| 1638 |
OP_32_64(ld8u): |
| 1639 |
/* ??? LLC (RXY format) is only present with the extended-immediate
|
| 1640 |
facility, whereas LLGC is always present. */
|
| 1641 |
tcg_out_mem(s, 0, RXY_LLGC, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1642 |
break;
|
| 1643 |
|
| 1644 |
OP_32_64(ld8s): |
| 1645 |
/* ??? LB is no smaller than LGB, so no point to using it. */
|
| 1646 |
tcg_out_mem(s, 0, RXY_LGB, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1647 |
break;
|
| 1648 |
|
| 1649 |
OP_32_64(ld16u): |
| 1650 |
/* ??? LLH (RXY format) is only present with the extended-immediate
|
| 1651 |
facility, whereas LLGH is always present. */
|
| 1652 |
tcg_out_mem(s, 0, RXY_LLGH, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1653 |
break;
|
| 1654 |
|
| 1655 |
case INDEX_op_ld16s_i32:
|
| 1656 |
tcg_out_mem(s, RX_LH, RXY_LHY, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1657 |
break;
|
| 1658 |
|
| 1659 |
case INDEX_op_ld_i32:
|
| 1660 |
tcg_out_ld(s, TCG_TYPE_I32, args[0], args[1], args[2]); |
| 1661 |
break;
|
| 1662 |
|
| 1663 |
OP_32_64(st8): |
| 1664 |
tcg_out_mem(s, RX_STC, RXY_STCY, args[0], args[1], |
| 1665 |
TCG_REG_NONE, args[2]);
|
| 1666 |
break;
|
| 1667 |
|
| 1668 |
OP_32_64(st16): |
| 1669 |
tcg_out_mem(s, RX_STH, RXY_STHY, args[0], args[1], |
| 1670 |
TCG_REG_NONE, args[2]);
|
| 1671 |
break;
|
| 1672 |
|
| 1673 |
case INDEX_op_st_i32:
|
| 1674 |
tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); |
| 1675 |
break;
|
| 1676 |
|
| 1677 |
case INDEX_op_add_i32:
|
| 1678 |
a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; |
| 1679 |
if (const_args[2]) { |
| 1680 |
do_addi_32:
|
| 1681 |
if (a0 == a1) {
|
| 1682 |
if (a2 == (int16_t)a2) {
|
| 1683 |
tcg_out_insn(s, RI, AHI, a0, a2); |
| 1684 |
break;
|
| 1685 |
} |
| 1686 |
if (facilities & FACILITY_EXT_IMM) {
|
| 1687 |
tcg_out_insn(s, RIL, AFI, a0, a2); |
| 1688 |
break;
|
| 1689 |
} |
| 1690 |
} |
| 1691 |
tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); |
| 1692 |
} else if (a0 == a1) { |
| 1693 |
tcg_out_insn(s, RR, AR, a0, a2); |
| 1694 |
} else {
|
| 1695 |
tcg_out_insn(s, RX, LA, a0, a1, a2, 0);
|
| 1696 |
} |
| 1697 |
break;
|
| 1698 |
case INDEX_op_sub_i32:
|
| 1699 |
a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; |
| 1700 |
if (const_args[2]) { |
| 1701 |
a2 = -a2; |
| 1702 |
goto do_addi_32;
|
| 1703 |
} |
| 1704 |
tcg_out_insn(s, RR, SR, args[0], args[2]); |
| 1705 |
break;
|
| 1706 |
|
| 1707 |
case INDEX_op_and_i32:
|
| 1708 |
if (const_args[2]) { |
| 1709 |
tgen_andi(s, TCG_TYPE_I32, args[0], args[2]); |
| 1710 |
} else {
|
| 1711 |
tcg_out_insn(s, RR, NR, args[0], args[2]); |
| 1712 |
} |
| 1713 |
break;
|
| 1714 |
case INDEX_op_or_i32:
|
| 1715 |
if (const_args[2]) { |
| 1716 |
tgen64_ori(s, args[0], args[2] & 0xffffffff); |
| 1717 |
} else {
|
| 1718 |
tcg_out_insn(s, RR, OR, args[0], args[2]); |
| 1719 |
} |
| 1720 |
break;
|
| 1721 |
case INDEX_op_xor_i32:
|
| 1722 |
if (const_args[2]) { |
| 1723 |
tgen64_xori(s, args[0], args[2] & 0xffffffff); |
| 1724 |
} else {
|
| 1725 |
tcg_out_insn(s, RR, XR, args[0], args[2]); |
| 1726 |
} |
| 1727 |
break;
|
| 1728 |
|
| 1729 |
case INDEX_op_neg_i32:
|
| 1730 |
tcg_out_insn(s, RR, LCR, args[0], args[1]); |
| 1731 |
break;
|
| 1732 |
|
| 1733 |
case INDEX_op_mul_i32:
|
| 1734 |
if (const_args[2]) { |
| 1735 |
if ((int32_t)args[2] == (int16_t)args[2]) { |
| 1736 |
tcg_out_insn(s, RI, MHI, args[0], args[2]); |
| 1737 |
} else {
|
| 1738 |
tcg_out_insn(s, RIL, MSFI, args[0], args[2]); |
| 1739 |
} |
| 1740 |
} else {
|
| 1741 |
tcg_out_insn(s, RRE, MSR, args[0], args[2]); |
| 1742 |
} |
| 1743 |
break;
|
| 1744 |
|
| 1745 |
case INDEX_op_div2_i32:
|
| 1746 |
tcg_out_insn(s, RR, DR, TCG_REG_R2, args[4]);
|
| 1747 |
break;
|
| 1748 |
case INDEX_op_divu2_i32:
|
| 1749 |
tcg_out_insn(s, RRE, DLR, TCG_REG_R2, args[4]);
|
| 1750 |
break;
|
| 1751 |
|
| 1752 |
case INDEX_op_shl_i32:
|
| 1753 |
op = RS_SLL; |
| 1754 |
do_shift32:
|
| 1755 |
if (const_args[2]) { |
| 1756 |
tcg_out_sh32(s, op, args[0], TCG_REG_NONE, args[2]); |
| 1757 |
} else {
|
| 1758 |
tcg_out_sh32(s, op, args[0], args[2], 0); |
| 1759 |
} |
| 1760 |
break;
|
| 1761 |
case INDEX_op_shr_i32:
|
| 1762 |
op = RS_SRL; |
| 1763 |
goto do_shift32;
|
| 1764 |
case INDEX_op_sar_i32:
|
| 1765 |
op = RS_SRA; |
| 1766 |
goto do_shift32;
|
| 1767 |
|
| 1768 |
case INDEX_op_rotl_i32:
|
| 1769 |
/* ??? Using tcg_out_sh64 here for the format; it is a 32-bit rol. */
|
| 1770 |
if (const_args[2]) { |
| 1771 |
tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1772 |
} else {
|
| 1773 |
tcg_out_sh64(s, RSY_RLL, args[0], args[1], args[2], 0); |
| 1774 |
} |
| 1775 |
break;
|
| 1776 |
case INDEX_op_rotr_i32:
|
| 1777 |
if (const_args[2]) { |
| 1778 |
tcg_out_sh64(s, RSY_RLL, args[0], args[1], |
| 1779 |
TCG_REG_NONE, (32 - args[2]) & 31); |
| 1780 |
} else {
|
| 1781 |
tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]);
|
| 1782 |
tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_TMP0, 0); |
| 1783 |
} |
| 1784 |
break;
|
| 1785 |
|
| 1786 |
case INDEX_op_ext8s_i32:
|
| 1787 |
tgen_ext8s(s, TCG_TYPE_I32, args[0], args[1]); |
| 1788 |
break;
|
| 1789 |
case INDEX_op_ext16s_i32:
|
| 1790 |
tgen_ext16s(s, TCG_TYPE_I32, args[0], args[1]); |
| 1791 |
break;
|
| 1792 |
case INDEX_op_ext8u_i32:
|
| 1793 |
tgen_ext8u(s, TCG_TYPE_I32, args[0], args[1]); |
| 1794 |
break;
|
| 1795 |
case INDEX_op_ext16u_i32:
|
| 1796 |
tgen_ext16u(s, TCG_TYPE_I32, args[0], args[1]); |
| 1797 |
break;
|
| 1798 |
|
| 1799 |
OP_32_64(bswap16): |
| 1800 |
/* The TCG bswap definition requires bits 0-47 already be zero.
|
| 1801 |
Thus we don't need the G-type insns to implement bswap16_i64. */
|
| 1802 |
tcg_out_insn(s, RRE, LRVR, args[0], args[1]); |
| 1803 |
tcg_out_sh32(s, RS_SRL, args[0], TCG_REG_NONE, 16); |
| 1804 |
break;
|
| 1805 |
OP_32_64(bswap32): |
| 1806 |
tcg_out_insn(s, RRE, LRVR, args[0], args[1]); |
| 1807 |
break;
|
| 1808 |
|
| 1809 |
case INDEX_op_add2_i32:
|
| 1810 |
/* ??? Make use of ALFI. */
|
| 1811 |
tcg_out_insn(s, RR, ALR, args[0], args[4]); |
| 1812 |
tcg_out_insn(s, RRE, ALCR, args[1], args[5]); |
| 1813 |
break;
|
| 1814 |
case INDEX_op_sub2_i32:
|
| 1815 |
/* ??? Make use of SLFI. */
|
| 1816 |
tcg_out_insn(s, RR, SLR, args[0], args[4]); |
| 1817 |
tcg_out_insn(s, RRE, SLBR, args[1], args[5]); |
| 1818 |
break;
|
| 1819 |
|
| 1820 |
case INDEX_op_br:
|
| 1821 |
tgen_branch(s, S390_CC_ALWAYS, args[0]);
|
| 1822 |
break;
|
| 1823 |
|
| 1824 |
case INDEX_op_brcond_i32:
|
| 1825 |
tgen_brcond(s, TCG_TYPE_I32, args[2], args[0], |
| 1826 |
args[1], const_args[1], args[3]); |
| 1827 |
break;
|
| 1828 |
case INDEX_op_setcond_i32:
|
| 1829 |
tgen_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], |
| 1830 |
args[2], const_args[2]); |
| 1831 |
break;
|
| 1832 |
case INDEX_op_movcond_i32:
|
| 1833 |
tgen_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], |
| 1834 |
args[2], const_args[2], args[3]); |
| 1835 |
break;
|
| 1836 |
|
| 1837 |
case INDEX_op_qemu_ld8u:
|
| 1838 |
tcg_out_qemu_ld(s, args, LD_UINT8); |
| 1839 |
break;
|
| 1840 |
case INDEX_op_qemu_ld8s:
|
| 1841 |
tcg_out_qemu_ld(s, args, LD_INT8); |
| 1842 |
break;
|
| 1843 |
case INDEX_op_qemu_ld16u:
|
| 1844 |
tcg_out_qemu_ld(s, args, LD_UINT16); |
| 1845 |
break;
|
| 1846 |
case INDEX_op_qemu_ld16s:
|
| 1847 |
tcg_out_qemu_ld(s, args, LD_INT16); |
| 1848 |
break;
|
| 1849 |
case INDEX_op_qemu_ld32:
|
| 1850 |
/* ??? Technically we can use a non-extending instruction. */
|
| 1851 |
tcg_out_qemu_ld(s, args, LD_UINT32); |
| 1852 |
break;
|
| 1853 |
case INDEX_op_qemu_ld64:
|
| 1854 |
tcg_out_qemu_ld(s, args, LD_UINT64); |
| 1855 |
break;
|
| 1856 |
|
| 1857 |
case INDEX_op_qemu_st8:
|
| 1858 |
tcg_out_qemu_st(s, args, LD_UINT8); |
| 1859 |
break;
|
| 1860 |
case INDEX_op_qemu_st16:
|
| 1861 |
tcg_out_qemu_st(s, args, LD_UINT16); |
| 1862 |
break;
|
| 1863 |
case INDEX_op_qemu_st32:
|
| 1864 |
tcg_out_qemu_st(s, args, LD_UINT32); |
| 1865 |
break;
|
| 1866 |
case INDEX_op_qemu_st64:
|
| 1867 |
tcg_out_qemu_st(s, args, LD_UINT64); |
| 1868 |
break;
|
| 1869 |
|
| 1870 |
case INDEX_op_mov_i64:
|
| 1871 |
tcg_out_mov(s, TCG_TYPE_I64, args[0], args[1]); |
| 1872 |
break;
|
| 1873 |
case INDEX_op_movi_i64:
|
| 1874 |
tcg_out_movi(s, TCG_TYPE_I64, args[0], args[1]); |
| 1875 |
break;
|
| 1876 |
|
| 1877 |
case INDEX_op_ld16s_i64:
|
| 1878 |
tcg_out_mem(s, 0, RXY_LGH, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1879 |
break;
|
| 1880 |
case INDEX_op_ld32u_i64:
|
| 1881 |
tcg_out_mem(s, 0, RXY_LLGF, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1882 |
break;
|
| 1883 |
case INDEX_op_ld32s_i64:
|
| 1884 |
tcg_out_mem(s, 0, RXY_LGF, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1885 |
break;
|
| 1886 |
case INDEX_op_ld_i64:
|
| 1887 |
tcg_out_ld(s, TCG_TYPE_I64, args[0], args[1], args[2]); |
| 1888 |
break;
|
| 1889 |
|
| 1890 |
case INDEX_op_st32_i64:
|
| 1891 |
tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); |
| 1892 |
break;
|
| 1893 |
case INDEX_op_st_i64:
|
| 1894 |
tcg_out_st(s, TCG_TYPE_I64, args[0], args[1], args[2]); |
| 1895 |
break;
|
| 1896 |
|
| 1897 |
case INDEX_op_add_i64:
|
| 1898 |
a0 = args[0], a1 = args[1], a2 = args[2]; |
| 1899 |
if (const_args[2]) { |
| 1900 |
do_addi_64:
|
| 1901 |
if (a0 == a1) {
|
| 1902 |
if (a2 == (int16_t)a2) {
|
| 1903 |
tcg_out_insn(s, RI, AGHI, a0, a2); |
| 1904 |
break;
|
| 1905 |
} |
| 1906 |
if (facilities & FACILITY_EXT_IMM) {
|
| 1907 |
if (a2 == (int32_t)a2) {
|
| 1908 |
tcg_out_insn(s, RIL, AGFI, a0, a2); |
| 1909 |
break;
|
| 1910 |
} else if (a2 == (uint32_t)a2) { |
| 1911 |
tcg_out_insn(s, RIL, ALGFI, a0, a2); |
| 1912 |
break;
|
| 1913 |
} else if (-a2 == (uint32_t)-a2) { |
| 1914 |
tcg_out_insn(s, RIL, SLGFI, a0, -a2); |
| 1915 |
break;
|
| 1916 |
} |
| 1917 |
} |
| 1918 |
} |
| 1919 |
tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); |
| 1920 |
} else if (a0 == a1) { |
| 1921 |
tcg_out_insn(s, RRE, AGR, a0, a2); |
| 1922 |
} else {
|
| 1923 |
tcg_out_insn(s, RX, LA, a0, a1, a2, 0);
|
| 1924 |
} |
| 1925 |
break;
|
| 1926 |
case INDEX_op_sub_i64:
|
| 1927 |
a0 = args[0], a1 = args[1], a2 = args[2]; |
| 1928 |
if (const_args[2]) { |
| 1929 |
a2 = -a2; |
| 1930 |
goto do_addi_64;
|
| 1931 |
} else {
|
| 1932 |
tcg_out_insn(s, RRE, SGR, args[0], args[2]); |
| 1933 |
} |
| 1934 |
break;
|
| 1935 |
|
| 1936 |
case INDEX_op_and_i64:
|
| 1937 |
if (const_args[2]) { |
| 1938 |
tgen_andi(s, TCG_TYPE_I64, args[0], args[2]); |
| 1939 |
} else {
|
| 1940 |
tcg_out_insn(s, RRE, NGR, args[0], args[2]); |
| 1941 |
} |
| 1942 |
break;
|
| 1943 |
case INDEX_op_or_i64:
|
| 1944 |
if (const_args[2]) { |
| 1945 |
tgen64_ori(s, args[0], args[2]); |
| 1946 |
} else {
|
| 1947 |
tcg_out_insn(s, RRE, OGR, args[0], args[2]); |
| 1948 |
} |
| 1949 |
break;
|
| 1950 |
case INDEX_op_xor_i64:
|
| 1951 |
if (const_args[2]) { |
| 1952 |
tgen64_xori(s, args[0], args[2]); |
| 1953 |
} else {
|
| 1954 |
tcg_out_insn(s, RRE, XGR, args[0], args[2]); |
| 1955 |
} |
| 1956 |
break;
|
| 1957 |
|
| 1958 |
case INDEX_op_neg_i64:
|
| 1959 |
tcg_out_insn(s, RRE, LCGR, args[0], args[1]); |
| 1960 |
break;
|
| 1961 |
case INDEX_op_bswap64_i64:
|
| 1962 |
tcg_out_insn(s, RRE, LRVGR, args[0], args[1]); |
| 1963 |
break;
|
| 1964 |
|
| 1965 |
case INDEX_op_mul_i64:
|
| 1966 |
if (const_args[2]) { |
| 1967 |
if (args[2] == (int16_t)args[2]) { |
| 1968 |
tcg_out_insn(s, RI, MGHI, args[0], args[2]); |
| 1969 |
} else {
|
| 1970 |
tcg_out_insn(s, RIL, MSGFI, args[0], args[2]); |
| 1971 |
} |
| 1972 |
} else {
|
| 1973 |
tcg_out_insn(s, RRE, MSGR, args[0], args[2]); |
| 1974 |
} |
| 1975 |
break;
|
| 1976 |
|
| 1977 |
case INDEX_op_div2_i64:
|
| 1978 |
/* ??? We get an unnecessary sign-extension of the dividend
|
| 1979 |
into R3 with this definition, but as we do in fact always
|
| 1980 |
produce both quotient and remainder using INDEX_op_div_i64
|
| 1981 |
instead requires jumping through even more hoops. */
|
| 1982 |
tcg_out_insn(s, RRE, DSGR, TCG_REG_R2, args[4]);
|
| 1983 |
break;
|
| 1984 |
case INDEX_op_divu2_i64:
|
| 1985 |
tcg_out_insn(s, RRE, DLGR, TCG_REG_R2, args[4]);
|
| 1986 |
break;
|
| 1987 |
case INDEX_op_mulu2_i64:
|
| 1988 |
tcg_out_insn(s, RRE, MLGR, TCG_REG_R2, args[3]);
|
| 1989 |
break;
|
| 1990 |
|
| 1991 |
case INDEX_op_shl_i64:
|
| 1992 |
op = RSY_SLLG; |
| 1993 |
do_shift64:
|
| 1994 |
if (const_args[2]) { |
| 1995 |
tcg_out_sh64(s, op, args[0], args[1], TCG_REG_NONE, args[2]); |
| 1996 |
} else {
|
| 1997 |
tcg_out_sh64(s, op, args[0], args[1], args[2], 0); |
| 1998 |
} |
| 1999 |
break;
|
| 2000 |
case INDEX_op_shr_i64:
|
| 2001 |
op = RSY_SRLG; |
| 2002 |
goto do_shift64;
|
| 2003 |
case INDEX_op_sar_i64:
|
| 2004 |
op = RSY_SRAG; |
| 2005 |
goto do_shift64;
|
| 2006 |
|
| 2007 |
case INDEX_op_rotl_i64:
|
| 2008 |
if (const_args[2]) { |
| 2009 |
tcg_out_sh64(s, RSY_RLLG, args[0], args[1], |
| 2010 |
TCG_REG_NONE, args[2]);
|
| 2011 |
} else {
|
| 2012 |
tcg_out_sh64(s, RSY_RLLG, args[0], args[1], args[2], 0); |
| 2013 |
} |
| 2014 |
break;
|
| 2015 |
case INDEX_op_rotr_i64:
|
| 2016 |
if (const_args[2]) { |
| 2017 |
tcg_out_sh64(s, RSY_RLLG, args[0], args[1], |
| 2018 |
TCG_REG_NONE, (64 - args[2]) & 63); |
| 2019 |
} else {
|
| 2020 |
/* We can use the smaller 32-bit negate because only the
|
| 2021 |
low 6 bits are examined for the rotate. */
|
| 2022 |
tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]);
|
| 2023 |
tcg_out_sh64(s, RSY_RLLG, args[0], args[1], TCG_TMP0, 0); |
| 2024 |
} |
| 2025 |
break;
|
| 2026 |
|
| 2027 |
case INDEX_op_ext8s_i64:
|
| 2028 |
tgen_ext8s(s, TCG_TYPE_I64, args[0], args[1]); |
| 2029 |
break;
|
| 2030 |
case INDEX_op_ext16s_i64:
|
| 2031 |
tgen_ext16s(s, TCG_TYPE_I64, args[0], args[1]); |
| 2032 |
break;
|
| 2033 |
case INDEX_op_ext32s_i64:
|
| 2034 |
tgen_ext32s(s, args[0], args[1]); |
| 2035 |
break;
|
| 2036 |
case INDEX_op_ext8u_i64:
|
| 2037 |
tgen_ext8u(s, TCG_TYPE_I64, args[0], args[1]); |
| 2038 |
break;
|
| 2039 |
case INDEX_op_ext16u_i64:
|
| 2040 |
tgen_ext16u(s, TCG_TYPE_I64, args[0], args[1]); |
| 2041 |
break;
|
| 2042 |
case INDEX_op_ext32u_i64:
|
| 2043 |
tgen_ext32u(s, args[0], args[1]); |
| 2044 |
break;
|
| 2045 |
|
| 2046 |
case INDEX_op_add2_i64:
|
| 2047 |
/* ??? Make use of ALGFI and SLGFI. */
|
| 2048 |
tcg_out_insn(s, RRE, ALGR, args[0], args[4]); |
| 2049 |
tcg_out_insn(s, RRE, ALCGR, args[1], args[5]); |
| 2050 |
break;
|
| 2051 |
case INDEX_op_sub2_i64:
|
| 2052 |
/* ??? Make use of ALGFI and SLGFI. */
|
| 2053 |
tcg_out_insn(s, RRE, SLGR, args[0], args[4]); |
| 2054 |
tcg_out_insn(s, RRE, SLBGR, args[1], args[5]); |
| 2055 |
break;
|
| 2056 |
|
| 2057 |
case INDEX_op_brcond_i64:
|
| 2058 |
tgen_brcond(s, TCG_TYPE_I64, args[2], args[0], |
| 2059 |
args[1], const_args[1], args[3]); |
| 2060 |
break;
|
| 2061 |
case INDEX_op_setcond_i64:
|
| 2062 |
tgen_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], |
| 2063 |
args[2], const_args[2]); |
| 2064 |
break;
|
| 2065 |
case INDEX_op_movcond_i64:
|
| 2066 |
tgen_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], |
| 2067 |
args[2], const_args[2], args[3]); |
| 2068 |
break;
|
| 2069 |
|
| 2070 |
case INDEX_op_qemu_ld32u:
|
| 2071 |
tcg_out_qemu_ld(s, args, LD_UINT32); |
| 2072 |
break;
|
| 2073 |
case INDEX_op_qemu_ld32s:
|
| 2074 |
tcg_out_qemu_ld(s, args, LD_INT32); |
| 2075 |
break;
|
| 2076 |
|
| 2077 |
OP_32_64(deposit): |
| 2078 |
tgen_deposit(s, args[0], args[2], args[3], args[4]); |
| 2079 |
break;
|
| 2080 |
|
| 2081 |
default:
|
| 2082 |
fprintf(stderr,"unimplemented opc 0x%x\n",opc);
|
| 2083 |
tcg_abort(); |
| 2084 |
} |
| 2085 |
} |
| 2086 |
|
| 2087 |
static const TCGTargetOpDef s390_op_defs[] = { |
| 2088 |
{ INDEX_op_exit_tb, { } },
|
| 2089 |
{ INDEX_op_goto_tb, { } },
|
| 2090 |
{ INDEX_op_call, { "ri" } },
|
| 2091 |
{ INDEX_op_br, { } },
|
| 2092 |
|
| 2093 |
{ INDEX_op_mov_i32, { "r", "r" } },
|
| 2094 |
{ INDEX_op_movi_i32, { "r" } },
|
| 2095 |
|
| 2096 |
{ INDEX_op_ld8u_i32, { "r", "r" } },
|
| 2097 |
{ INDEX_op_ld8s_i32, { "r", "r" } },
|
| 2098 |
{ INDEX_op_ld16u_i32, { "r", "r" } },
|
| 2099 |
{ INDEX_op_ld16s_i32, { "r", "r" } },
|
| 2100 |
{ INDEX_op_ld_i32, { "r", "r" } },
|
| 2101 |
{ INDEX_op_st8_i32, { "r", "r" } },
|
| 2102 |
{ INDEX_op_st16_i32, { "r", "r" } },
|
| 2103 |
{ INDEX_op_st_i32, { "r", "r" } },
|
| 2104 |
|
| 2105 |
{ INDEX_op_add_i32, { "r", "r", "ri" } },
|
| 2106 |
{ INDEX_op_sub_i32, { "r", "0", "ri" } },
|
| 2107 |
{ INDEX_op_mul_i32, { "r", "0", "rK" } },
|
| 2108 |
|
| 2109 |
{ INDEX_op_div2_i32, { "b", "a", "0", "1", "r" } },
|
| 2110 |
{ INDEX_op_divu2_i32, { "b", "a", "0", "1", "r" } },
|
| 2111 |
|
| 2112 |
{ INDEX_op_and_i32, { "r", "0", "ri" } },
|
| 2113 |
{ INDEX_op_or_i32, { "r", "0", "rWO" } },
|
| 2114 |
{ INDEX_op_xor_i32, { "r", "0", "rWX" } },
|
| 2115 |
|
| 2116 |
{ INDEX_op_neg_i32, { "r", "r" } },
|
| 2117 |
|
| 2118 |
{ INDEX_op_shl_i32, { "r", "0", "Ri" } },
|
| 2119 |
{ INDEX_op_shr_i32, { "r", "0", "Ri" } },
|
| 2120 |
{ INDEX_op_sar_i32, { "r", "0", "Ri" } },
|
| 2121 |
|
| 2122 |
{ INDEX_op_rotl_i32, { "r", "r", "Ri" } },
|
| 2123 |
{ INDEX_op_rotr_i32, { "r", "r", "Ri" } },
|
| 2124 |
|
| 2125 |
{ INDEX_op_ext8s_i32, { "r", "r" } },
|
| 2126 |
{ INDEX_op_ext8u_i32, { "r", "r" } },
|
| 2127 |
{ INDEX_op_ext16s_i32, { "r", "r" } },
|
| 2128 |
{ INDEX_op_ext16u_i32, { "r", "r" } },
|
| 2129 |
|
| 2130 |
{ INDEX_op_bswap16_i32, { "r", "r" } },
|
| 2131 |
{ INDEX_op_bswap32_i32, { "r", "r" } },
|
| 2132 |
|
| 2133 |
{ INDEX_op_add2_i32, { "r", "r", "0", "1", "r", "r" } },
|
| 2134 |
{ INDEX_op_sub2_i32, { "r", "r", "0", "1", "r", "r" } },
|
| 2135 |
|
| 2136 |
{ INDEX_op_brcond_i32, { "r", "rWC" } },
|
| 2137 |
{ INDEX_op_setcond_i32, { "r", "r", "rWC" } },
|
| 2138 |
{ INDEX_op_movcond_i32, { "r", "r", "rWC", "r", "0" } },
|
| 2139 |
{ INDEX_op_deposit_i32, { "r", "0", "r" } },
|
| 2140 |
|
| 2141 |
{ INDEX_op_qemu_ld8u, { "r", "L" } },
|
| 2142 |
{ INDEX_op_qemu_ld8s, { "r", "L" } },
|
| 2143 |
{ INDEX_op_qemu_ld16u, { "r", "L" } },
|
| 2144 |
{ INDEX_op_qemu_ld16s, { "r", "L" } },
|
| 2145 |
{ INDEX_op_qemu_ld32, { "r", "L" } },
|
| 2146 |
{ INDEX_op_qemu_ld64, { "r", "L" } },
|
| 2147 |
|
| 2148 |
{ INDEX_op_qemu_st8, { "L", "L" } },
|
| 2149 |
{ INDEX_op_qemu_st16, { "L", "L" } },
|
| 2150 |
{ INDEX_op_qemu_st32, { "L", "L" } },
|
| 2151 |
{ INDEX_op_qemu_st64, { "L", "L" } },
|
| 2152 |
|
| 2153 |
{ INDEX_op_mov_i64, { "r", "r" } },
|
| 2154 |
{ INDEX_op_movi_i64, { "r" } },
|
| 2155 |
|
| 2156 |
{ INDEX_op_ld8u_i64, { "r", "r" } },
|
| 2157 |
{ INDEX_op_ld8s_i64, { "r", "r" } },
|
| 2158 |
{ INDEX_op_ld16u_i64, { "r", "r" } },
|
| 2159 |
{ INDEX_op_ld16s_i64, { "r", "r" } },
|
| 2160 |
{ INDEX_op_ld32u_i64, { "r", "r" } },
|
| 2161 |
{ INDEX_op_ld32s_i64, { "r", "r" } },
|
| 2162 |
{ INDEX_op_ld_i64, { "r", "r" } },
|
| 2163 |
|
| 2164 |
{ INDEX_op_st8_i64, { "r", "r" } },
|
| 2165 |
{ INDEX_op_st16_i64, { "r", "r" } },
|
| 2166 |
{ INDEX_op_st32_i64, { "r", "r" } },
|
| 2167 |
{ INDEX_op_st_i64, { "r", "r" } },
|
| 2168 |
|
| 2169 |
{ INDEX_op_add_i64, { "r", "r", "ri" } },
|
| 2170 |
{ INDEX_op_sub_i64, { "r", "0", "ri" } },
|
| 2171 |
{ INDEX_op_mul_i64, { "r", "0", "rK" } },
|
| 2172 |
|
| 2173 |
{ INDEX_op_div2_i64, { "b", "a", "0", "1", "r" } },
|
| 2174 |
{ INDEX_op_divu2_i64, { "b", "a", "0", "1", "r" } },
|
| 2175 |
{ INDEX_op_mulu2_i64, { "b", "a", "0", "r" } },
|
| 2176 |
|
| 2177 |
{ INDEX_op_and_i64, { "r", "0", "ri" } },
|
| 2178 |
{ INDEX_op_or_i64, { "r", "0", "rO" } },
|
| 2179 |
{ INDEX_op_xor_i64, { "r", "0", "rX" } },
|
| 2180 |
|
| 2181 |
{ INDEX_op_neg_i64, { "r", "r" } },
|
| 2182 |
|
| 2183 |
{ INDEX_op_shl_i64, { "r", "r", "Ri" } },
|
| 2184 |
{ INDEX_op_shr_i64, { "r", "r", "Ri" } },
|
| 2185 |
{ INDEX_op_sar_i64, { "r", "r", "Ri" } },
|
| 2186 |
|
| 2187 |
{ INDEX_op_rotl_i64, { "r", "r", "Ri" } },
|
| 2188 |
{ INDEX_op_rotr_i64, { "r", "r", "Ri" } },
|
| 2189 |
|
| 2190 |
{ INDEX_op_ext8s_i64, { "r", "r" } },
|
| 2191 |
{ INDEX_op_ext8u_i64, { "r", "r" } },
|
| 2192 |
{ INDEX_op_ext16s_i64, { "r", "r" } },
|
| 2193 |
{ INDEX_op_ext16u_i64, { "r", "r" } },
|
| 2194 |
{ INDEX_op_ext32s_i64, { "r", "r" } },
|
| 2195 |
{ INDEX_op_ext32u_i64, { "r", "r" } },
|
| 2196 |
|
| 2197 |
{ INDEX_op_bswap16_i64, { "r", "r" } },
|
| 2198 |
{ INDEX_op_bswap32_i64, { "r", "r" } },
|
| 2199 |
{ INDEX_op_bswap64_i64, { "r", "r" } },
|
| 2200 |
|
| 2201 |
{ INDEX_op_add2_i64, { "r", "r", "0", "1", "r", "r" } },
|
| 2202 |
{ INDEX_op_sub2_i64, { "r", "r", "0", "1", "r", "r" } },
|
| 2203 |
|
| 2204 |
{ INDEX_op_brcond_i64, { "r", "rC" } },
|
| 2205 |
{ INDEX_op_setcond_i64, { "r", "r", "rC" } },
|
| 2206 |
{ INDEX_op_movcond_i64, { "r", "r", "rC", "r", "0" } },
|
| 2207 |
{ INDEX_op_deposit_i64, { "r", "0", "r" } },
|
| 2208 |
|
| 2209 |
{ INDEX_op_qemu_ld32u, { "r", "L" } },
|
| 2210 |
{ INDEX_op_qemu_ld32s, { "r", "L" } },
|
| 2211 |
|
| 2212 |
{ -1 },
|
| 2213 |
}; |
| 2214 |
|
| 2215 |
/* ??? Linux kernels provide an AUXV entry AT_HWCAP that provides most of
|
| 2216 |
this information. However, getting at that entry is not easy this far
|
| 2217 |
away from main. Our options are: start searching from environ, but
|
| 2218 |
that fails as soon as someone does a setenv in between. Read the data
|
| 2219 |
from /proc/self/auxv. Or do the probing ourselves. The only thing
|
| 2220 |
extra that AT_HWCAP gives us is HWCAP_S390_HIGH_GPRS, which indicates
|
| 2221 |
that the kernel saves all 64-bits of the registers around traps while
|
| 2222 |
in 31-bit mode. But this is true of all "recent" kernels (ought to dig
|
| 2223 |
back and see from when this might not be true). */
|
| 2224 |
|
| 2225 |
#include <signal.h> |
| 2226 |
|
| 2227 |
static volatile sig_atomic_t got_sigill; |
| 2228 |
|
| 2229 |
static void sigill_handler(int sig) |
| 2230 |
{
|
| 2231 |
got_sigill = 1;
|
| 2232 |
} |
| 2233 |
|
| 2234 |
static void query_facilities(void) |
| 2235 |
{
|
| 2236 |
struct sigaction sa_old, sa_new;
|
| 2237 |
register int r0 __asm__("0"); |
| 2238 |
register void *r1 __asm__("1"); |
| 2239 |
int fail;
|
| 2240 |
|
| 2241 |
memset(&sa_new, 0, sizeof(sa_new)); |
| 2242 |
sa_new.sa_handler = sigill_handler; |
| 2243 |
sigaction(SIGILL, &sa_new, &sa_old); |
| 2244 |
|
| 2245 |
/* First, try STORE FACILITY LIST EXTENDED. If this is present, then
|
| 2246 |
we need not do any more probing. Unfortunately, this itself is an
|
| 2247 |
extension and the original STORE FACILITY LIST instruction is
|
| 2248 |
kernel-only, storing its results at absolute address 200. */
|
| 2249 |
/* stfle 0(%r1) */
|
| 2250 |
r1 = &facilities; |
| 2251 |
asm volatile(".word 0xb2b0,0x1000" |
| 2252 |
: "=r"(r0) : "0"(0), "r"(r1) : "memory", "cc"); |
| 2253 |
|
| 2254 |
if (got_sigill) {
|
| 2255 |
/* STORE FACILITY EXTENDED is not available. Probe for one of each
|
| 2256 |
kind of instruction that we're interested in. */
|
| 2257 |
/* ??? Possibly some of these are in practice never present unless
|
| 2258 |
the store-facility-extended facility is also present. But since
|
| 2259 |
that isn't documented it's just better to probe for each. */
|
| 2260 |
|
| 2261 |
/* Test for z/Architecture. Required even in 31-bit mode. */
|
| 2262 |
got_sigill = 0;
|
| 2263 |
/* agr %r0,%r0 */
|
| 2264 |
asm volatile(".word 0xb908,0x0000" : "=r"(r0) : : "cc"); |
| 2265 |
if (!got_sigill) {
|
| 2266 |
facilities |= FACILITY_ZARCH_ACTIVE; |
| 2267 |
} |
| 2268 |
|
| 2269 |
/* Test for long displacement. */
|
| 2270 |
got_sigill = 0;
|
| 2271 |
/* ly %r0,0(%r1) */
|
| 2272 |
r1 = &facilities; |
| 2273 |
asm volatile(".word 0xe300,0x1000,0x0058" |
| 2274 |
: "=r"(r0) : "r"(r1) : "cc"); |
| 2275 |
if (!got_sigill) {
|
| 2276 |
facilities |= FACILITY_LONG_DISP; |
| 2277 |
} |
| 2278 |
|
| 2279 |
/* Test for extended immediates. */
|
| 2280 |
got_sigill = 0;
|
| 2281 |
/* afi %r0,0 */
|
| 2282 |
asm volatile(".word 0xc209,0x0000,0x0000" : : : "cc"); |
| 2283 |
if (!got_sigill) {
|
| 2284 |
facilities |= FACILITY_EXT_IMM; |
| 2285 |
} |
| 2286 |
|
| 2287 |
/* Test for general-instructions-extension. */
|
| 2288 |
got_sigill = 0;
|
| 2289 |
/* msfi %r0,1 */
|
| 2290 |
asm volatile(".word 0xc201,0x0000,0x0001"); |
| 2291 |
if (!got_sigill) {
|
| 2292 |
facilities |= FACILITY_GEN_INST_EXT; |
| 2293 |
} |
| 2294 |
} |
| 2295 |
|
| 2296 |
sigaction(SIGILL, &sa_old, NULL);
|
| 2297 |
|
| 2298 |
/* The translator currently uses these extensions unconditionally.
|
| 2299 |
Pruning this back to the base ESA/390 architecture doesn't seem
|
| 2300 |
worthwhile, since even the KVM target requires z/Arch. */
|
| 2301 |
fail = 0;
|
| 2302 |
if ((facilities & FACILITY_ZARCH_ACTIVE) == 0) { |
| 2303 |
fprintf(stderr, "TCG: z/Arch facility is required.\n");
|
| 2304 |
fprintf(stderr, "TCG: Boot with a 64-bit enabled kernel.\n");
|
| 2305 |
fail = 1;
|
| 2306 |
} |
| 2307 |
if ((facilities & FACILITY_LONG_DISP) == 0) { |
| 2308 |
fprintf(stderr, "TCG: long-displacement facility is required.\n");
|
| 2309 |
fail = 1;
|
| 2310 |
} |
| 2311 |
|
| 2312 |
/* So far there's just enough support for 31-bit mode to let the
|
| 2313 |
compile succeed. This is good enough to run QEMU with KVM. */
|
| 2314 |
if (sizeof(void *) != 8) { |
| 2315 |
fprintf(stderr, "TCG: 31-bit mode is not supported.\n");
|
| 2316 |
fail = 1;
|
| 2317 |
} |
| 2318 |
|
| 2319 |
if (fail) {
|
| 2320 |
exit(-1);
|
| 2321 |
} |
| 2322 |
} |
| 2323 |
|
| 2324 |
static void tcg_target_init(TCGContext *s) |
| 2325 |
{
|
| 2326 |
query_facilities(); |
| 2327 |
|
| 2328 |
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff); |
| 2329 |
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffff); |
| 2330 |
|
| 2331 |
tcg_regset_clear(tcg_target_call_clobber_regs); |
| 2332 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R0); |
| 2333 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R1); |
| 2334 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R2); |
| 2335 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R3); |
| 2336 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R4); |
| 2337 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R5); |
| 2338 |
/* The return register can be considered call-clobbered. */
|
| 2339 |
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R14); |
| 2340 |
|
| 2341 |
tcg_regset_clear(s->reserved_regs); |
| 2342 |
tcg_regset_set_reg(s->reserved_regs, TCG_TMP0); |
| 2343 |
/* XXX many insns can't be used with R0, so we better avoid it for now */
|
| 2344 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); |
| 2345 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); |
| 2346 |
|
| 2347 |
tcg_add_target_add_op_defs(s390_op_defs); |
| 2348 |
} |
| 2349 |
|
| 2350 |
static void tcg_target_qemu_prologue(TCGContext *s) |
| 2351 |
{
|
| 2352 |
tcg_target_long frame_size; |
| 2353 |
|
| 2354 |
/* stmg %r6,%r15,48(%r15) (save registers) */
|
| 2355 |
tcg_out_insn(s, RXY, STMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, 48);
|
| 2356 |
|
| 2357 |
/* aghi %r15,-frame_size */
|
| 2358 |
frame_size = TCG_TARGET_CALL_STACK_OFFSET; |
| 2359 |
frame_size += TCG_STATIC_CALL_ARGS_SIZE; |
| 2360 |
frame_size += CPU_TEMP_BUF_NLONGS * sizeof(long); |
| 2361 |
tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -frame_size); |
| 2362 |
|
| 2363 |
tcg_set_frame(s, TCG_REG_CALL_STACK, |
| 2364 |
TCG_STATIC_CALL_ARGS_SIZE + TCG_TARGET_CALL_STACK_OFFSET, |
| 2365 |
CPU_TEMP_BUF_NLONGS * sizeof(long)); |
| 2366 |
|
| 2367 |
if (GUEST_BASE >= 0x80000) { |
| 2368 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, GUEST_BASE); |
| 2369 |
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); |
| 2370 |
} |
| 2371 |
|
| 2372 |
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
|
| 2373 |
/* br %r3 (go to TB) */
|
| 2374 |
tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, tcg_target_call_iarg_regs[1]);
|
| 2375 |
|
| 2376 |
tb_ret_addr = s->code_ptr; |
| 2377 |
|
| 2378 |
/* lmg %r6,%r15,fs+48(%r15) (restore registers) */
|
| 2379 |
tcg_out_insn(s, RXY, LMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, |
| 2380 |
frame_size + 48);
|
| 2381 |
|
| 2382 |
/* br %r14 (return) */
|
| 2383 |
tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R14); |
| 2384 |
} |