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Diffstat (limited to 'tcg/s390/tcg-target.c.inc')
| -rw-r--r-- | tcg/s390/tcg-target.c.inc | 2630 |
1 files changed, 2630 insertions, 0 deletions
diff --git a/tcg/s390/tcg-target.c.inc b/tcg/s390/tcg-target.c.inc new file mode 100644 index 0000000000..985115acfb --- /dev/null +++ b/tcg/s390/tcg-target.c.inc @@ -0,0 +1,2630 @@ +/* + * Tiny Code Generator for QEMU + * + * Copyright (c) 2009 Ulrich Hecht <uli@suse.de> + * Copyright (c) 2009 Alexander Graf <agraf@suse.de> + * Copyright (c) 2010 Richard Henderson <rth@twiddle.net> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +/* We only support generating code for 64-bit mode. */ +#if TCG_TARGET_REG_BITS != 64 +#error "unsupported code generation mode" +#endif + +#include "../tcg-pool.c.inc" +#include "elf.h" + +/* ??? The translation blocks produced by TCG are generally small enough to + be entirely reachable with a 16-bit displacement. Leaving the option for + a 32-bit displacement here Just In Case. */ +#define USE_LONG_BRANCHES 0 + +#define TCG_CT_CONST_S16 0x100 +#define TCG_CT_CONST_S32 0x200 +#define TCG_CT_CONST_S33 0x400 +#define TCG_CT_CONST_ZERO 0x800 + +/* Several places within the instruction set 0 means "no register" + rather than TCG_REG_R0. */ +#define TCG_REG_NONE 0 + +/* A scratch register that may be be used throughout the backend. */ +#define TCG_TMP0 TCG_REG_R1 + +/* A scratch register that holds a pointer to the beginning of the TB. + We don't need this when we have pc-relative loads with the general + instructions extension facility. */ +#define TCG_REG_TB TCG_REG_R12 +#define USE_REG_TB (!(s390_facilities & FACILITY_GEN_INST_EXT)) + +#ifndef CONFIG_SOFTMMU +#define TCG_GUEST_BASE_REG TCG_REG_R13 +#endif + +/* All of the following instructions are prefixed with their instruction + format, and are defined as 8- or 16-bit quantities, even when the two + halves of the 16-bit quantity may appear 32 bits apart in the insn. + This makes it easy to copy the values from the tables in Appendix B. */ +typedef enum S390Opcode { + RIL_AFI = 0xc209, + RIL_AGFI = 0xc208, + RIL_ALFI = 0xc20b, + RIL_ALGFI = 0xc20a, + RIL_BRASL = 0xc005, + RIL_BRCL = 0xc004, + RIL_CFI = 0xc20d, + RIL_CGFI = 0xc20c, + RIL_CLFI = 0xc20f, + RIL_CLGFI = 0xc20e, + RIL_CLRL = 0xc60f, + RIL_CLGRL = 0xc60a, + RIL_CRL = 0xc60d, + RIL_CGRL = 0xc608, + RIL_IIHF = 0xc008, + RIL_IILF = 0xc009, + RIL_LARL = 0xc000, + RIL_LGFI = 0xc001, + RIL_LGRL = 0xc408, + RIL_LLIHF = 0xc00e, + RIL_LLILF = 0xc00f, + RIL_LRL = 0xc40d, + RIL_MSFI = 0xc201, + RIL_MSGFI = 0xc200, + RIL_NIHF = 0xc00a, + RIL_NILF = 0xc00b, + RIL_OIHF = 0xc00c, + RIL_OILF = 0xc00d, + RIL_SLFI = 0xc205, + RIL_SLGFI = 0xc204, + RIL_XIHF = 0xc006, + RIL_XILF = 0xc007, + + RI_AGHI = 0xa70b, + RI_AHI = 0xa70a, + RI_BRC = 0xa704, + RI_CHI = 0xa70e, + RI_CGHI = 0xa70f, + RI_IIHH = 0xa500, + RI_IIHL = 0xa501, + RI_IILH = 0xa502, + RI_IILL = 0xa503, + RI_LGHI = 0xa709, + RI_LLIHH = 0xa50c, + RI_LLIHL = 0xa50d, + RI_LLILH = 0xa50e, + RI_LLILL = 0xa50f, + RI_MGHI = 0xa70d, + RI_MHI = 0xa70c, + RI_NIHH = 0xa504, + RI_NIHL = 0xa505, + RI_NILH = 0xa506, + RI_NILL = 0xa507, + RI_OIHH = 0xa508, + RI_OIHL = 0xa509, + RI_OILH = 0xa50a, + RI_OILL = 0xa50b, + + RIE_CGIJ = 0xec7c, + RIE_CGRJ = 0xec64, + RIE_CIJ = 0xec7e, + RIE_CLGRJ = 0xec65, + RIE_CLIJ = 0xec7f, + RIE_CLGIJ = 0xec7d, + RIE_CLRJ = 0xec77, + RIE_CRJ = 0xec76, + RIE_LOCGHI = 0xec46, + RIE_RISBG = 0xec55, + + RRE_AGR = 0xb908, + RRE_ALGR = 0xb90a, + RRE_ALCR = 0xb998, + RRE_ALCGR = 0xb988, + RRE_CGR = 0xb920, + RRE_CLGR = 0xb921, + RRE_DLGR = 0xb987, + RRE_DLR = 0xb997, + RRE_DSGFR = 0xb91d, + RRE_DSGR = 0xb90d, + RRE_FLOGR = 0xb983, + RRE_LGBR = 0xb906, + RRE_LCGR = 0xb903, + RRE_LGFR = 0xb914, + RRE_LGHR = 0xb907, + RRE_LGR = 0xb904, + RRE_LLGCR = 0xb984, + RRE_LLGFR = 0xb916, + RRE_LLGHR = 0xb985, + RRE_LRVR = 0xb91f, + RRE_LRVGR = 0xb90f, + RRE_LTGR = 0xb902, + RRE_MLGR = 0xb986, + RRE_MSGR = 0xb90c, + RRE_MSR = 0xb252, + RRE_NGR = 0xb980, + RRE_OGR = 0xb981, + RRE_SGR = 0xb909, + RRE_SLGR = 0xb90b, + RRE_SLBR = 0xb999, + RRE_SLBGR = 0xb989, + RRE_XGR = 0xb982, + + RRF_LOCR = 0xb9f2, + RRF_LOCGR = 0xb9e2, + RRF_NRK = 0xb9f4, + RRF_NGRK = 0xb9e4, + RRF_ORK = 0xb9f6, + RRF_OGRK = 0xb9e6, + RRF_SRK = 0xb9f9, + RRF_SGRK = 0xb9e9, + RRF_SLRK = 0xb9fb, + RRF_SLGRK = 0xb9eb, + RRF_XRK = 0xb9f7, + RRF_XGRK = 0xb9e7, + + RR_AR = 0x1a, + RR_ALR = 0x1e, + RR_BASR = 0x0d, + RR_BCR = 0x07, + RR_CLR = 0x15, + RR_CR = 0x19, + RR_DR = 0x1d, + RR_LCR = 0x13, + RR_LR = 0x18, + RR_LTR = 0x12, + RR_NR = 0x14, + RR_OR = 0x16, + RR_SR = 0x1b, + RR_SLR = 0x1f, + RR_XR = 0x17, + + RSY_RLL = 0xeb1d, + RSY_RLLG = 0xeb1c, + RSY_SLLG = 0xeb0d, + RSY_SLLK = 0xebdf, + RSY_SRAG = 0xeb0a, + RSY_SRAK = 0xebdc, + RSY_SRLG = 0xeb0c, + RSY_SRLK = 0xebde, + + RS_SLL = 0x89, + RS_SRA = 0x8a, + RS_SRL = 0x88, + + RXY_AG = 0xe308, + RXY_AY = 0xe35a, + RXY_CG = 0xe320, + RXY_CLG = 0xe321, + RXY_CLY = 0xe355, + RXY_CY = 0xe359, + RXY_LAY = 0xe371, + RXY_LB = 0xe376, + RXY_LG = 0xe304, + RXY_LGB = 0xe377, + RXY_LGF = 0xe314, + RXY_LGH = 0xe315, + RXY_LHY = 0xe378, + RXY_LLGC = 0xe390, + RXY_LLGF = 0xe316, + RXY_LLGH = 0xe391, + RXY_LMG = 0xeb04, + RXY_LRV = 0xe31e, + RXY_LRVG = 0xe30f, + RXY_LRVH = 0xe31f, + RXY_LY = 0xe358, + RXY_NG = 0xe380, + RXY_OG = 0xe381, + RXY_STCY = 0xe372, + RXY_STG = 0xe324, + RXY_STHY = 0xe370, + RXY_STMG = 0xeb24, + RXY_STRV = 0xe33e, + RXY_STRVG = 0xe32f, + RXY_STRVH = 0xe33f, + RXY_STY = 0xe350, + RXY_XG = 0xe382, + + RX_A = 0x5a, + RX_C = 0x59, + RX_L = 0x58, + RX_LA = 0x41, + RX_LH = 0x48, + RX_ST = 0x50, + RX_STC = 0x42, + RX_STH = 0x40, + + NOP = 0x0707, +} S390Opcode; + +#ifdef CONFIG_DEBUG_TCG +static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { + "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", + "%r8", "%r9", "%r10" "%r11" "%r12" "%r13" "%r14" "%r15" +}; +#endif + +/* Since R6 is a potential argument register, choose it last of the + call-saved registers. Likewise prefer the call-clobbered registers + in reverse order to maximize the chance of avoiding the arguments. */ +static const int tcg_target_reg_alloc_order[] = { + /* Call saved registers. */ + TCG_REG_R13, + TCG_REG_R12, + TCG_REG_R11, + TCG_REG_R10, + TCG_REG_R9, + TCG_REG_R8, + TCG_REG_R7, + TCG_REG_R6, + /* Call clobbered registers. */ + TCG_REG_R14, + TCG_REG_R0, + TCG_REG_R1, + /* Argument registers, in reverse order of allocation. */ + TCG_REG_R5, + TCG_REG_R4, + TCG_REG_R3, + TCG_REG_R2, +}; + +static const int tcg_target_call_iarg_regs[] = { + TCG_REG_R2, + TCG_REG_R3, + TCG_REG_R4, + TCG_REG_R5, + TCG_REG_R6, +}; + +static const int tcg_target_call_oarg_regs[] = { + TCG_REG_R2, +}; + +#define S390_CC_EQ 8 +#define S390_CC_LT 4 +#define S390_CC_GT 2 +#define S390_CC_OV 1 +#define S390_CC_NE (S390_CC_LT | S390_CC_GT) +#define S390_CC_LE (S390_CC_LT | S390_CC_EQ) +#define S390_CC_GE (S390_CC_GT | S390_CC_EQ) +#define S390_CC_NEVER 0 +#define S390_CC_ALWAYS 15 + +/* Condition codes that result from a COMPARE and COMPARE LOGICAL. */ +static const uint8_t tcg_cond_to_s390_cond[] = { + [TCG_COND_EQ] = S390_CC_EQ, + [TCG_COND_NE] = S390_CC_NE, + [TCG_COND_LT] = S390_CC_LT, + [TCG_COND_LE] = S390_CC_LE, + [TCG_COND_GT] = S390_CC_GT, + [TCG_COND_GE] = S390_CC_GE, + [TCG_COND_LTU] = S390_CC_LT, + [TCG_COND_LEU] = S390_CC_LE, + [TCG_COND_GTU] = S390_CC_GT, + [TCG_COND_GEU] = S390_CC_GE, +}; + +/* Condition codes that result from a LOAD AND TEST. Here, we have no + unsigned instruction variation, however since the test is vs zero we + can re-map the outcomes appropriately. */ +static const uint8_t tcg_cond_to_ltr_cond[] = { + [TCG_COND_EQ] = S390_CC_EQ, + [TCG_COND_NE] = S390_CC_NE, + [TCG_COND_LT] = S390_CC_LT, + [TCG_COND_LE] = S390_CC_LE, + [TCG_COND_GT] = S390_CC_GT, + [TCG_COND_GE] = S390_CC_GE, + [TCG_COND_LTU] = S390_CC_NEVER, + [TCG_COND_LEU] = S390_CC_EQ, + [TCG_COND_GTU] = S390_CC_NE, + [TCG_COND_GEU] = S390_CC_ALWAYS, +}; + +#ifdef CONFIG_SOFTMMU +static void * const qemu_ld_helpers[16] = { + [MO_UB] = helper_ret_ldub_mmu, + [MO_SB] = helper_ret_ldsb_mmu, + [MO_LEUW] = helper_le_lduw_mmu, + [MO_LESW] = helper_le_ldsw_mmu, + [MO_LEUL] = helper_le_ldul_mmu, + [MO_LESL] = helper_le_ldsl_mmu, + [MO_LEQ] = helper_le_ldq_mmu, + [MO_BEUW] = helper_be_lduw_mmu, + [MO_BESW] = helper_be_ldsw_mmu, + [MO_BEUL] = helper_be_ldul_mmu, + [MO_BESL] = helper_be_ldsl_mmu, + [MO_BEQ] = helper_be_ldq_mmu, +}; + +static void * const qemu_st_helpers[16] = { + [MO_UB] = helper_ret_stb_mmu, + [MO_LEUW] = helper_le_stw_mmu, + [MO_LEUL] = helper_le_stl_mmu, + [MO_LEQ] = helper_le_stq_mmu, + [MO_BEUW] = helper_be_stw_mmu, + [MO_BEUL] = helper_be_stl_mmu, + [MO_BEQ] = helper_be_stq_mmu, +}; +#endif + +static tcg_insn_unit *tb_ret_addr; +uint64_t s390_facilities; + +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, + intptr_t value, intptr_t addend) +{ + intptr_t pcrel2; + uint32_t old; + + value += addend; + pcrel2 = (tcg_insn_unit *)value - code_ptr; + + switch (type) { + case R_390_PC16DBL: + if (pcrel2 == (int16_t)pcrel2) { + tcg_patch16(code_ptr, pcrel2); + return true; + } + break; + case R_390_PC32DBL: + if (pcrel2 == (int32_t)pcrel2) { + tcg_patch32(code_ptr, pcrel2); + return true; + } + break; + case R_390_20: + if (value == sextract64(value, 0, 20)) { + old = *(uint32_t *)code_ptr & 0xf00000ff; + old |= ((value & 0xfff) << 16) | ((value & 0xff000) >> 4); + tcg_patch32(code_ptr, old); + return true; + } + break; + default: + g_assert_not_reached(); + } + return false; +} + +/* parse target specific constraints */ +static const char *target_parse_constraint(TCGArgConstraint *ct, + const char *ct_str, TCGType type) +{ + switch (*ct_str++) { + case 'r': /* all registers */ + ct->ct |= TCG_CT_REG; + ct->u.regs = 0xffff; + break; + case 'L': /* qemu_ld/st constraint */ + ct->ct |= TCG_CT_REG; + ct->u.regs = 0xffff; + tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2); + tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3); + tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4); + break; + case 'a': /* force R2 for division */ + ct->ct |= TCG_CT_REG; + ct->u.regs = 0; + tcg_regset_set_reg(ct->u.regs, TCG_REG_R2); + break; + case 'b': /* force R3 for division */ + ct->ct |= TCG_CT_REG; + ct->u.regs = 0; + tcg_regset_set_reg(ct->u.regs, TCG_REG_R3); + break; + case 'A': + ct->ct |= TCG_CT_CONST_S33; + break; + case 'I': + ct->ct |= TCG_CT_CONST_S16; + break; + case 'J': + ct->ct |= TCG_CT_CONST_S32; + break; + case 'Z': + ct->ct |= TCG_CT_CONST_ZERO; + break; + default: + return NULL; + } + return ct_str; +} + +/* Test if a constant matches the constraint. */ +static int tcg_target_const_match(tcg_target_long val, TCGType type, + const TCGArgConstraint *arg_ct) +{ + int ct = arg_ct->ct; + + if (ct & TCG_CT_CONST) { + return 1; + } + + if (type == TCG_TYPE_I32) { + val = (int32_t)val; + } + + /* The following are mutually exclusive. */ + if (ct & TCG_CT_CONST_S16) { + return val == (int16_t)val; + } else if (ct & TCG_CT_CONST_S32) { + return val == (int32_t)val; + } else if (ct & TCG_CT_CONST_S33) { + return val >= -0xffffffffll && val <= 0xffffffffll; + } else if (ct & TCG_CT_CONST_ZERO) { + return val == 0; + } + + return 0; +} + +/* Emit instructions according to the given instruction format. */ + +static void tcg_out_insn_RR(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2) +{ + tcg_out16(s, (op << 8) | (r1 << 4) | r2); +} + +static void tcg_out_insn_RRE(TCGContext *s, S390Opcode op, + TCGReg r1, TCGReg r2) +{ + tcg_out32(s, (op << 16) | (r1 << 4) | r2); +} + +static void tcg_out_insn_RRF(TCGContext *s, S390Opcode op, + TCGReg r1, TCGReg r2, int m3) +{ + tcg_out32(s, (op << 16) | (m3 << 12) | (r1 << 4) | r2); +} + +static void tcg_out_insn_RI(TCGContext *s, S390Opcode op, TCGReg r1, int i2) +{ + tcg_out32(s, (op << 16) | (r1 << 20) | (i2 & 0xffff)); +} + +static void tcg_out_insn_RIE(TCGContext *s, S390Opcode op, TCGReg r1, + int i2, int m3) +{ + tcg_out16(s, (op & 0xff00) | (r1 << 4) | m3); + tcg_out32(s, (i2 << 16) | (op & 0xff)); +} + +static void tcg_out_insn_RIL(TCGContext *s, S390Opcode op, TCGReg r1, int i2) +{ + tcg_out16(s, op | (r1 << 4)); + tcg_out32(s, i2); +} + +static void tcg_out_insn_RS(TCGContext *s, S390Opcode op, TCGReg r1, + TCGReg b2, TCGReg r3, int disp) +{ + tcg_out32(s, (op << 24) | (r1 << 20) | (r3 << 16) | (b2 << 12) + | (disp & 0xfff)); +} + +static void tcg_out_insn_RSY(TCGContext *s, S390Opcode op, TCGReg r1, + TCGReg b2, TCGReg r3, int disp) +{ + tcg_out16(s, (op & 0xff00) | (r1 << 4) | r3); + tcg_out32(s, (op & 0xff) | (b2 << 28) + | ((disp & 0xfff) << 16) | ((disp & 0xff000) >> 4)); +} + +#define tcg_out_insn_RX tcg_out_insn_RS +#define tcg_out_insn_RXY tcg_out_insn_RSY + +/* Emit an opcode with "type-checking" of the format. */ +#define tcg_out_insn(S, FMT, OP, ...) \ + glue(tcg_out_insn_,FMT)(S, glue(glue(FMT,_),OP), ## __VA_ARGS__) + + +/* emit 64-bit shifts */ +static void tcg_out_sh64(TCGContext* s, S390Opcode op, TCGReg dest, + TCGReg src, TCGReg sh_reg, int sh_imm) +{ + tcg_out_insn_RSY(s, op, dest, sh_reg, src, sh_imm); +} + +/* emit 32-bit shifts */ +static void tcg_out_sh32(TCGContext* s, S390Opcode op, TCGReg dest, + TCGReg sh_reg, int sh_imm) +{ + tcg_out_insn_RS(s, op, dest, sh_reg, 0, sh_imm); +} + +static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg dst, TCGReg src) +{ + if (src != dst) { + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, LR, dst, src); + } else { + tcg_out_insn(s, RRE, LGR, dst, src); + } + } + return true; +} + +static const S390Opcode lli_insns[4] = { + RI_LLILL, RI_LLILH, RI_LLIHL, RI_LLIHH +}; + +static bool maybe_out_small_movi(TCGContext *s, TCGType type, + TCGReg ret, tcg_target_long sval) +{ + tcg_target_ulong uval = sval; + int i; + + if (type == TCG_TYPE_I32) { + uval = (uint32_t)sval; + sval = (int32_t)sval; + } + + /* Try all 32-bit insns that can load it in one go. */ + if (sval >= -0x8000 && sval < 0x8000) { + tcg_out_insn(s, RI, LGHI, ret, sval); + return true; + } + + for (i = 0; i < 4; i++) { + tcg_target_long mask = 0xffffull << i*16; + if ((uval & mask) == uval) { + tcg_out_insn_RI(s, lli_insns[i], ret, uval >> i*16); + return true; + } + } + + return false; +} + +/* load a register with an immediate value */ +static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret, + tcg_target_long sval, bool in_prologue) +{ + tcg_target_ulong uval; + + /* Try all 32-bit insns that can load it in one go. */ + if (maybe_out_small_movi(s, type, ret, sval)) { + return; + } + + uval = sval; + if (type == TCG_TYPE_I32) { + uval = (uint32_t)sval; + sval = (int32_t)sval; + } + + /* Try all 48-bit insns that can load it in one go. */ + if (s390_facilities & FACILITY_EXT_IMM) { + if (sval == (int32_t)sval) { + tcg_out_insn(s, RIL, LGFI, ret, sval); + return; + } + if (uval <= 0xffffffff) { + tcg_out_insn(s, RIL, LLILF, ret, uval); + return; + } + if ((uval & 0xffffffff) == 0) { + tcg_out_insn(s, RIL, LLIHF, ret, uval >> 32); + return; + } + } + + /* Try for PC-relative address load. For odd addresses, + attempt to use an offset from the start of the TB. */ + if ((sval & 1) == 0) { + ptrdiff_t off = tcg_pcrel_diff(s, (void *)sval) >> 1; + if (off == (int32_t)off) { + tcg_out_insn(s, RIL, LARL, ret, off); + return; + } + } else if (USE_REG_TB && !in_prologue) { + ptrdiff_t off = sval - (uintptr_t)s->code_gen_ptr; + if (off == sextract64(off, 0, 20)) { + /* This is certain to be an address within TB, and therefore + OFF will be negative; don't try RX_LA. */ + tcg_out_insn(s, RXY, LAY, ret, TCG_REG_TB, TCG_REG_NONE, off); + return; + } + } + + /* A 32-bit unsigned value can be loaded in 2 insns. And given + that LLILL, LLIHL, LLILF above did not succeed, we know that + both insns are required. */ + if (uval <= 0xffffffff) { + tcg_out_insn(s, RI, LLILL, ret, uval); + tcg_out_insn(s, RI, IILH, ret, uval >> 16); + return; + } + + /* Otherwise, stuff it in the constant pool. */ + if (s390_facilities & FACILITY_GEN_INST_EXT) { + tcg_out_insn(s, RIL, LGRL, ret, 0); + new_pool_label(s, sval, R_390_PC32DBL, s->code_ptr - 2, 2); + } else if (USE_REG_TB && !in_prologue) { + tcg_out_insn(s, RXY, LG, ret, TCG_REG_TB, TCG_REG_NONE, 0); + new_pool_label(s, sval, R_390_20, s->code_ptr - 2, + -(intptr_t)s->code_gen_ptr); + } else { + TCGReg base = ret ? ret : TCG_TMP0; + tcg_out_insn(s, RIL, LARL, base, 0); + new_pool_label(s, sval, R_390_PC32DBL, s->code_ptr - 2, 2); + tcg_out_insn(s, RXY, LG, ret, base, TCG_REG_NONE, 0); + } +} + +static void tcg_out_movi(TCGContext *s, TCGType type, + TCGReg ret, tcg_target_long sval) +{ + tcg_out_movi_int(s, type, ret, sval, false); +} + +/* Emit a load/store type instruction. Inputs are: + DATA: The register to be loaded or stored. + BASE+OFS: The effective address. + OPC_RX: If the operation has an RX format opcode (e.g. STC), otherwise 0. + OPC_RXY: The RXY format opcode for the operation (e.g. STCY). */ + +static void tcg_out_mem(TCGContext *s, S390Opcode opc_rx, S390Opcode opc_rxy, + TCGReg data, TCGReg base, TCGReg index, + tcg_target_long ofs) +{ + if (ofs < -0x80000 || ofs >= 0x80000) { + /* Combine the low 20 bits of the offset with the actual load insn; + the high 44 bits must come from an immediate load. */ + tcg_target_long low = ((ofs & 0xfffff) ^ 0x80000) - 0x80000; + tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs - low); + ofs = low; + + /* If we were already given an index register, add it in. */ + if (index != TCG_REG_NONE) { + tcg_out_insn(s, RRE, AGR, TCG_TMP0, index); + } + index = TCG_TMP0; + } + + if (opc_rx && ofs >= 0 && ofs < 0x1000) { + tcg_out_insn_RX(s, opc_rx, data, base, index, ofs); + } else { + tcg_out_insn_RXY(s, opc_rxy, data, base, index, ofs); + } +} + + +/* load data without address translation or endianness conversion */ +static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data, + TCGReg base, intptr_t ofs) +{ + if (type == TCG_TYPE_I32) { + tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs); + } else { + tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs); + } +} + +static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data, + TCGReg base, intptr_t ofs) +{ + if (type == TCG_TYPE_I32) { + tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs); + } else { + tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs); + } +} + +static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, + TCGReg base, intptr_t ofs) +{ + return false; +} + +/* load data from an absolute host address */ +static void tcg_out_ld_abs(TCGContext *s, TCGType type, TCGReg dest, void *abs) +{ + intptr_t addr = (intptr_t)abs; + + if ((s390_facilities & FACILITY_GEN_INST_EXT) && !(addr & 1)) { + ptrdiff_t disp = tcg_pcrel_diff(s, abs) >> 1; + if (disp == (int32_t)disp) { + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RIL, LRL, dest, disp); + } else { + tcg_out_insn(s, RIL, LGRL, dest, disp); + } + return; + } + } + if (USE_REG_TB) { + ptrdiff_t disp = abs - (void *)s->code_gen_ptr; + if (disp == sextract64(disp, 0, 20)) { + tcg_out_ld(s, type, dest, TCG_REG_TB, disp); + return; + } + } + + tcg_out_movi(s, TCG_TYPE_PTR, dest, addr & ~0xffff); + tcg_out_ld(s, type, dest, dest, addr & 0xffff); +} + +static inline void tcg_out_risbg(TCGContext *s, TCGReg dest, TCGReg src, + int msb, int lsb, int ofs, int z) +{ + /* Format RIE-f */ + tcg_out16(s, (RIE_RISBG & 0xff00) | (dest << 4) | src); + tcg_out16(s, (msb << 8) | (z << 7) | lsb); + tcg_out16(s, (ofs << 8) | (RIE_RISBG & 0xff)); +} + +static void tgen_ext8s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) +{ + if (s390_facilities & FACILITY_EXT_IMM) { + tcg_out_insn(s, RRE, LGBR, dest, src); + return; + } + + if (type == TCG_TYPE_I32) { + if (dest == src) { + tcg_out_sh32(s, RS_SLL, dest, TCG_REG_NONE, 24); + } else { + tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 24); + } + tcg_out_sh32(s, RS_SRA, dest, TCG_REG_NONE, 24); + } else { + tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 56); + tcg_out_sh64(s, RSY_SRAG, dest, dest, TCG_REG_NONE, 56); + } +} + +static void tgen_ext8u(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) +{ + if (s390_facilities & FACILITY_EXT_IMM) { + tcg_out_insn(s, RRE, LLGCR, dest, src); + return; + } + + if (dest == src) { + tcg_out_movi(s, type, TCG_TMP0, 0xff); + src = TCG_TMP0; + } else { + tcg_out_movi(s, type, dest, 0xff); + } + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, NR, dest, src); + } else { + tcg_out_insn(s, RRE, NGR, dest, src); + } +} + +static void tgen_ext16s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) +{ + if (s390_facilities & FACILITY_EXT_IMM) { + tcg_out_insn(s, RRE, LGHR, dest, src); + return; + } + + if (type == TCG_TYPE_I32) { + if (dest == src) { + tcg_out_sh32(s, RS_SLL, dest, TCG_REG_NONE, 16); + } else { + tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 16); + } + tcg_out_sh32(s, RS_SRA, dest, TCG_REG_NONE, 16); + } else { + tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 48); + tcg_out_sh64(s, RSY_SRAG, dest, dest, TCG_REG_NONE, 48); + } +} + +static void tgen_ext16u(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) +{ + if (s390_facilities & FACILITY_EXT_IMM) { + tcg_out_insn(s, RRE, LLGHR, dest, src); + return; + } + + if (dest == src) { + tcg_out_movi(s, type, TCG_TMP0, 0xffff); + src = TCG_TMP0; + } else { + tcg_out_movi(s, type, dest, 0xffff); + } + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, NR, dest, src); + } else { + tcg_out_insn(s, RRE, NGR, dest, src); + } +} + +static inline void tgen_ext32s(TCGContext *s, TCGReg dest, TCGReg src) +{ + tcg_out_insn(s, RRE, LGFR, dest, src); +} + +static inline void tgen_ext32u(TCGContext *s, TCGReg dest, TCGReg src) +{ + tcg_out_insn(s, RRE, LLGFR, dest, src); +} + +/* Accept bit patterns like these: + 0....01....1 + 1....10....0 + 1..10..01..1 + 0..01..10..0 + Copied from gcc sources. */ +static inline bool risbg_mask(uint64_t c) +{ + uint64_t lsb; + /* We don't change the number of transitions by inverting, + so make sure we start with the LSB zero. */ + if (c & 1) { + c = ~c; + } + /* Reject all zeros or all ones. */ + if (c == 0) { + return false; + } + /* Find the first transition. */ + lsb = c & -c; + /* Invert to look for a second transition. */ + c = ~c; + /* Erase the first transition. */ + c &= -lsb; + /* Find the second transition, if any. */ + lsb = c & -c; + /* Match if all the bits are 1's, or if c is zero. */ + return c == -lsb; +} + +static void tgen_andi_risbg(TCGContext *s, TCGReg out, TCGReg in, uint64_t val) +{ + int msb, lsb; + if ((val & 0x8000000000000001ull) == 0x8000000000000001ull) { + /* Achieve wraparound by swapping msb and lsb. */ + msb = 64 - ctz64(~val); + lsb = clz64(~val) - 1; + } else { + msb = clz64(val); + lsb = 63 - ctz64(val); + } + tcg_out_risbg(s, out, in, msb, lsb, 0, 1); +} + +static void tgen_andi(TCGContext *s, TCGType type, TCGReg dest, uint64_t val) +{ + static const S390Opcode ni_insns[4] = { + RI_NILL, RI_NILH, RI_NIHL, RI_NIHH + }; + static const S390Opcode nif_insns[2] = { + RIL_NILF, RIL_NIHF + }; + uint64_t valid = (type == TCG_TYPE_I32 ? 0xffffffffull : -1ull); + int i; + + /* Look for the zero-extensions. */ + if ((val & valid) == 0xffffffff) { + tgen_ext32u(s, dest, dest); + return; + } + if (s390_facilities & FACILITY_EXT_IMM) { + if ((val & valid) == 0xff) { + tgen_ext8u(s, TCG_TYPE_I64, dest, dest); + return; + } + if ((val & valid) == 0xffff) { + tgen_ext16u(s, TCG_TYPE_I64, dest, dest); + return; + } + } + + /* Try all 32-bit insns that can perform it in one go. */ + for (i = 0; i < 4; i++) { + tcg_target_ulong mask = ~(0xffffull << i*16); + if (((val | ~valid) & mask) == mask) { + tcg_out_insn_RI(s, ni_insns[i], dest, val >> i*16); + return; + } + } + + /* Try all 48-bit insns that can perform it in one go. */ + if (s390_facilities & FACILITY_EXT_IMM) { + for (i = 0; i < 2; i++) { + tcg_target_ulong mask = ~(0xffffffffull << i*32); + if (((val | ~valid) & mask) == mask) { + tcg_out_insn_RIL(s, nif_insns[i], dest, val >> i*32); + return; + } + } + } + if ((s390_facilities & FACILITY_GEN_INST_EXT) && risbg_mask(val)) { + tgen_andi_risbg(s, dest, dest, val); + return; + } + + /* Use the constant pool if USE_REG_TB, but not for small constants. */ + if (USE_REG_TB) { + if (!maybe_out_small_movi(s, type, TCG_TMP0, val)) { + tcg_out_insn(s, RXY, NG, dest, TCG_REG_TB, TCG_REG_NONE, 0); + new_pool_label(s, val & valid, R_390_20, s->code_ptr - 2, + -(intptr_t)s->code_gen_ptr); + return; + } + } else { + tcg_out_movi(s, type, TCG_TMP0, val); + } + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, NR, dest, TCG_TMP0); + } else { + tcg_out_insn(s, RRE, NGR, dest, TCG_TMP0); + } +} + +static void tgen_ori(TCGContext *s, TCGType type, TCGReg dest, uint64_t val) +{ + static const S390Opcode oi_insns[4] = { + RI_OILL, RI_OILH, RI_OIHL, RI_OIHH + }; + static const S390Opcode oif_insns[2] = { + RIL_OILF, RIL_OIHF + }; + + int i; + + /* Look for no-op. */ + if (unlikely(val == 0)) { + return; + } + + /* Try all 32-bit insns that can perform it in one go. */ + for (i = 0; i < 4; i++) { + tcg_target_ulong mask = (0xffffull << i*16); + if ((val & mask) != 0 && (val & ~mask) == 0) { + tcg_out_insn_RI(s, oi_insns[i], dest, val >> i*16); + return; + } + } + + /* Try all 48-bit insns that can perform it in one go. */ + if (s390_facilities & FACILITY_EXT_IMM) { + for (i = 0; i < 2; i++) { + tcg_target_ulong mask = (0xffffffffull << i*32); + if ((val & mask) != 0 && (val & ~mask) == 0) { + tcg_out_insn_RIL(s, oif_insns[i], dest, val >> i*32); + return; + } + } + } + + /* Use the constant pool if USE_REG_TB, but not for small constants. */ + if (maybe_out_small_movi(s, type, TCG_TMP0, val)) { + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, OR, dest, TCG_TMP0); + } else { + tcg_out_insn(s, RRE, OGR, dest, TCG_TMP0); + } + } else if (USE_REG_TB) { + tcg_out_insn(s, RXY, OG, dest, TCG_REG_TB, TCG_REG_NONE, 0); + new_pool_label(s, val, R_390_20, s->code_ptr - 2, + -(intptr_t)s->code_gen_ptr); + } else { + /* Perform the OR via sequential modifications to the high and + low parts. Do this via recursion to handle 16-bit vs 32-bit + masks in each half. */ + tcg_debug_assert(s390_facilities & FACILITY_EXT_IMM); + tgen_ori(s, type, dest, val & 0x00000000ffffffffull); + tgen_ori(s, type, dest, val & 0xffffffff00000000ull); + } +} + +static void tgen_xori(TCGContext *s, TCGType type, TCGReg dest, uint64_t val) +{ + /* Try all 48-bit insns that can perform it in one go. */ + if (s390_facilities & FACILITY_EXT_IMM) { + if ((val & 0xffffffff00000000ull) == 0) { + tcg_out_insn(s, RIL, XILF, dest, val); + return; + } + if ((val & 0x00000000ffffffffull) == 0) { + tcg_out_insn(s, RIL, XIHF, dest, val >> 32); + return; + } + } + + /* Use the constant pool if USE_REG_TB, but not for small constants. */ + if (maybe_out_small_movi(s, type, TCG_TMP0, val)) { + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, XR, dest, TCG_TMP0); + } else { + tcg_out_insn(s, RRE, XGR, dest, TCG_TMP0); + } + } else if (USE_REG_TB) { + tcg_out_insn(s, RXY, XG, dest, TCG_REG_TB, TCG_REG_NONE, 0); + new_pool_label(s, val, R_390_20, s->code_ptr - 2, + -(intptr_t)s->code_gen_ptr); + } else { + /* Perform the xor by parts. */ + tcg_debug_assert(s390_facilities & FACILITY_EXT_IMM); + if (val & 0xffffffff) { + tcg_out_insn(s, RIL, XILF, dest, val); + } + if (val > 0xffffffff) { + tcg_out_insn(s, RIL, XIHF, dest, val >> 32); + } + } +} + +static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, + TCGArg c2, bool c2const, bool need_carry) +{ + bool is_unsigned = is_unsigned_cond(c); + S390Opcode op; + + if (c2const) { + if (c2 == 0) { + if (!(is_unsigned && need_carry)) { + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, LTR, r1, r1); + } else { + tcg_out_insn(s, RRE, LTGR, r1, r1); + } + return tcg_cond_to_ltr_cond[c]; + } + } + + if (!is_unsigned && c2 == (int16_t)c2) { + op = (type == TCG_TYPE_I32 ? RI_CHI : RI_CGHI); + tcg_out_insn_RI(s, op, r1, c2); + goto exit; + } + + if (s390_facilities & FACILITY_EXT_IMM) { + if (type == TCG_TYPE_I32) { + op = (is_unsigned ? RIL_CLFI : RIL_CFI); + tcg_out_insn_RIL(s, op, r1, c2); + goto exit; + } else if (c2 == (is_unsigned ? (uint32_t)c2 : (int32_t)c2)) { + op = (is_unsigned ? RIL_CLGFI : RIL_CGFI); + tcg_out_insn_RIL(s, op, r1, c2); + goto exit; + } + } + + /* Use the constant pool, but not for small constants. */ + if (maybe_out_small_movi(s, type, TCG_TMP0, c2)) { + c2 = TCG_TMP0; + /* fall through to reg-reg */ + } else if (USE_REG_TB) { + if (type == TCG_TYPE_I32) { + op = (is_unsigned ? RXY_CLY : RXY_CY); + tcg_out_insn_RXY(s, op, r1, TCG_REG_TB, TCG_REG_NONE, 0); + new_pool_label(s, (uint32_t)c2, R_390_20, s->code_ptr - 2, + 4 - (intptr_t)s->code_gen_ptr); + } else { + op = (is_unsigned ? RXY_CLG : RXY_CG); + tcg_out_insn_RXY(s, op, r1, TCG_REG_TB, TCG_REG_NONE, 0); + new_pool_label(s, c2, R_390_20, s->code_ptr - 2, + -(intptr_t)s->code_gen_ptr); + } + goto exit; + } else { + if (type == TCG_TYPE_I32) { + op = (is_unsigned ? RIL_CLRL : RIL_CRL); + tcg_out_insn_RIL(s, op, r1, 0); + new_pool_label(s, (uint32_t)c2, R_390_PC32DBL, + s->code_ptr - 2, 2 + 4); + } else { + op = (is_unsigned ? RIL_CLGRL : RIL_CGRL); + tcg_out_insn_RIL(s, op, r1, 0); + new_pool_label(s, c2, R_390_PC32DBL, s->code_ptr - 2, 2); + } + goto exit; + } + } + + if (type == TCG_TYPE_I32) { + op = (is_unsigned ? RR_CLR : RR_CR); + tcg_out_insn_RR(s, op, r1, c2); + } else { + op = (is_unsigned ? RRE_CLGR : RRE_CGR); + tcg_out_insn_RRE(s, op, r1, c2); + } + + exit: + return tcg_cond_to_s390_cond[c]; +} + +static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond, + TCGReg dest, TCGReg c1, TCGArg c2, int c2const) +{ + int cc; + bool have_loc; + + /* With LOC2, we can always emit the minimum 3 insns. */ + if (s390_facilities & FACILITY_LOAD_ON_COND2) { + /* Emit: d = 0, d = (cc ? 1 : d). */ + cc = tgen_cmp(s, type, cond, c1, c2, c2const, false); + tcg_out_movi(s, TCG_TYPE_I64, dest, 0); + tcg_out_insn(s, RIE, LOCGHI, dest, 1, cc); + return; + } + + have_loc = (s390_facilities & FACILITY_LOAD_ON_COND) != 0; + + /* For HAVE_LOC, only the paths through GTU/GT/LEU/LE are smaller. */ + restart: + switch (cond) { + case TCG_COND_NE: + /* X != 0 is X > 0. */ + if (c2const && c2 == 0) { + cond = TCG_COND_GTU; + } else { + break; + } + /* fallthru */ + + case TCG_COND_GTU: + case TCG_COND_GT: + /* The result of a compare has CC=2 for GT and CC=3 unused. + ADD LOGICAL WITH CARRY considers (CC & 2) the carry bit. */ + tgen_cmp(s, type, cond, c1, c2, c2const, true); + tcg_out_movi(s, type, dest, 0); + tcg_out_insn(s, RRE, ALCGR, dest, dest); + return; + + case TCG_COND_EQ: + /* X == 0 is X <= 0. */ + if (c2const && c2 == 0) { + cond = TCG_COND_LEU; + } else { + break; + } + /* fallthru */ + + case TCG_COND_LEU: + case TCG_COND_LE: + /* As above, but we're looking for borrow, or !carry. + The second insn computes d - d - borrow, or -1 for true + and 0 for false. So we must mask to 1 bit afterward. */ + tgen_cmp(s, type, cond, c1, c2, c2const, true); + tcg_out_insn(s, RRE, SLBGR, dest, dest); + tgen_andi(s, type, dest, 1); + return; + + case TCG_COND_GEU: + case TCG_COND_LTU: + case TCG_COND_LT: + case TCG_COND_GE: + /* Swap operands so that we can use LEU/GTU/GT/LE. */ + if (c2const) { + if (have_loc) { + break; + } + tcg_out_movi(s, type, TCG_TMP0, c2); + c2 = c1; + c2const = 0; + c1 = TCG_TMP0; + } else { + TCGReg t = c1; + c1 = c2; + c2 = t; + } + cond = tcg_swap_cond(cond); + goto restart; + + default: + g_assert_not_reached(); + } + + cc = tgen_cmp(s, type, cond, c1, c2, c2const, false); + if (have_loc) { + /* Emit: d = 0, t = 1, d = (cc ? t : d). */ + tcg_out_movi(s, TCG_TYPE_I64, dest, 0); + tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, 1); + tcg_out_insn(s, RRF, LOCGR, dest, TCG_TMP0, cc); + } else { + /* Emit: d = 1; if (cc) goto over; d = 0; over: */ + tcg_out_movi(s, type, dest, 1); + tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); + tcg_out_movi(s, type, dest, 0); + } +} + +static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest, + TCGReg c1, TCGArg c2, int c2const, + TCGArg v3, int v3const) +{ + int cc; + if (s390_facilities & FACILITY_LOAD_ON_COND) { + cc = tgen_cmp(s, type, c, c1, c2, c2const, false); + if (v3const) { + tcg_out_insn(s, RIE, LOCGHI, dest, v3, cc); + } else { + tcg_out_insn(s, RRF, LOCGR, dest, v3, cc); + } + } else { + c = tcg_invert_cond(c); + cc = tgen_cmp(s, type, c, c1, c2, c2const, false); + + /* Emit: if (cc) goto over; dest = r3; over: */ + tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); + tcg_out_insn(s, RRE, LGR, dest, v3); + } +} + +static void tgen_clz(TCGContext *s, TCGReg dest, TCGReg a1, + TCGArg a2, int a2const) +{ + /* Since this sets both R and R+1, we have no choice but to store the + result into R0, allowing R1 == TCG_TMP0 to be clobbered as well. */ + QEMU_BUILD_BUG_ON(TCG_TMP0 != TCG_REG_R1); + tcg_out_insn(s, RRE, FLOGR, TCG_REG_R0, a1); + + if (a2const && a2 == 64) { + tcg_out_mov(s, TCG_TYPE_I64, dest, TCG_REG_R0); + } else { + if (a2const) { + tcg_out_movi(s, TCG_TYPE_I64, dest, a2); + } else { + tcg_out_mov(s, TCG_TYPE_I64, dest, a2); + } + if (s390_facilities & FACILITY_LOAD_ON_COND) { + /* Emit: if (one bit found) dest = r0. */ + tcg_out_insn(s, RRF, LOCGR, dest, TCG_REG_R0, 2); + } else { + /* Emit: if (no one bit found) goto over; dest = r0; over: */ + tcg_out_insn(s, RI, BRC, 8, (4 + 4) >> 1); + tcg_out_insn(s, RRE, LGR, dest, TCG_REG_R0); + } + } +} + +static void tgen_deposit(TCGContext *s, TCGReg dest, TCGReg src, + int ofs, int len, int z) +{ + int lsb = (63 - ofs); + int msb = lsb - (len - 1); + tcg_out_risbg(s, dest, src, msb, lsb, ofs, z); +} + +static void tgen_extract(TCGContext *s, TCGReg dest, TCGReg src, + int ofs, int len) +{ + tcg_out_risbg(s, dest, src, 64 - len, 63, 64 - ofs, 1); +} + +static void tgen_gotoi(TCGContext *s, int cc, tcg_insn_unit *dest) +{ + ptrdiff_t off = dest - s->code_ptr; + if (off == (int16_t)off) { + tcg_out_insn(s, RI, BRC, cc, off); + } else if (off == (int32_t)off) { + tcg_out_insn(s, RIL, BRCL, cc, off); + } else { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, (uintptr_t)dest); + tcg_out_insn(s, RR, BCR, cc, TCG_TMP0); + } +} + +static void tgen_branch(TCGContext *s, int cc, TCGLabel *l) +{ + if (l->has_value) { + tgen_gotoi(s, cc, l->u.value_ptr); + } else if (USE_LONG_BRANCHES) { + tcg_out16(s, RIL_BRCL | (cc << 4)); + tcg_out_reloc(s, s->code_ptr, R_390_PC32DBL, l, 2); + s->code_ptr += 2; + } else { + tcg_out16(s, RI_BRC | (cc << 4)); + tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, l, 2); + s->code_ptr += 1; + } +} + +static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc, + TCGReg r1, TCGReg r2, TCGLabel *l) +{ + intptr_t off = 0; + + if (l->has_value) { + off = l->u.value_ptr - s->code_ptr; + tcg_debug_assert(off == (int16_t)off); + } else { + tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2); + } + + tcg_out16(s, (opc & 0xff00) | (r1 << 4) | r2); + tcg_out16(s, off); + tcg_out16(s, cc << 12 | (opc & 0xff)); +} + +static void tgen_compare_imm_branch(TCGContext *s, S390Opcode opc, int cc, + TCGReg r1, int i2, TCGLabel *l) +{ + tcg_target_long off = 0; + + if (l->has_value) { + off = l->u.value_ptr - s->code_ptr; + tcg_debug_assert(off == (int16_t)off); + } else { + tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2); + } + + tcg_out16(s, (opc & 0xff00) | (r1 << 4) | cc); + tcg_out16(s, off); + tcg_out16(s, (i2 << 8) | (opc & 0xff)); +} + +static void tgen_brcond(TCGContext *s, TCGType type, TCGCond c, + TCGReg r1, TCGArg c2, int c2const, TCGLabel *l) +{ + int cc; + + if (s390_facilities & FACILITY_GEN_INST_EXT) { + bool is_unsigned = is_unsigned_cond(c); + bool in_range; + S390Opcode opc; + + cc = tcg_cond_to_s390_cond[c]; + + if (!c2const) { + opc = (type == TCG_TYPE_I32 + ? (is_unsigned ? RIE_CLRJ : RIE_CRJ) + : (is_unsigned ? RIE_CLGRJ : RIE_CGRJ)); + tgen_compare_branch(s, opc, cc, r1, c2, l); + return; + } + + /* COMPARE IMMEDIATE AND BRANCH RELATIVE has an 8-bit immediate field. + If the immediate we've been given does not fit that range, we'll + fall back to separate compare and branch instructions using the + larger comparison range afforded by COMPARE IMMEDIATE. */ + if (type == TCG_TYPE_I32) { + if (is_unsigned) { + opc = RIE_CLIJ; + in_range = (uint32_t)c2 == (uint8_t)c2; + } else { + opc = RIE_CIJ; + in_range = (int32_t)c2 == (int8_t)c2; + } + } else { + if (is_unsigned) { + opc = RIE_CLGIJ; + in_range = (uint64_t)c2 == (uint8_t)c2; + } else { + opc = RIE_CGIJ; + in_range = (int64_t)c2 == (int8_t)c2; + } + } + if (in_range) { + tgen_compare_imm_branch(s, opc, cc, r1, c2, l); + return; + } + } + + cc = tgen_cmp(s, type, c, r1, c2, c2const, false); + tgen_branch(s, cc, l); +} + +static void tcg_out_call(TCGContext *s, tcg_insn_unit *dest) +{ + ptrdiff_t off = dest - s->code_ptr; + if (off == (int32_t)off) { + tcg_out_insn(s, RIL, BRASL, TCG_REG_R14, off); + } else { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, (uintptr_t)dest); + tcg_out_insn(s, RR, BASR, TCG_REG_R14, TCG_TMP0); + } +} + +static void tcg_out_qemu_ld_direct(TCGContext *s, MemOp opc, TCGReg data, + TCGReg base, TCGReg index, int disp) +{ + switch (opc & (MO_SSIZE | MO_BSWAP)) { + case MO_UB: + tcg_out_insn(s, RXY, LLGC, data, base, index, disp); + break; + case MO_SB: + tcg_out_insn(s, RXY, LGB, data, base, index, disp); + break; + + case MO_UW | MO_BSWAP: + /* swapped unsigned halfword load with upper bits zeroed */ + tcg_out_insn(s, RXY, LRVH, data, base, index, disp); + tgen_ext16u(s, TCG_TYPE_I64, data, data); + break; + case MO_UW: + tcg_out_insn(s, RXY, LLGH, data, base, index, disp); + break; + + case MO_SW | MO_BSWAP: + /* swapped sign-extended halfword load */ + tcg_out_insn(s, RXY, LRVH, data, base, index, disp); + tgen_ext16s(s, TCG_TYPE_I64, data, data); + break; + case MO_SW: + tcg_out_insn(s, RXY, LGH, data, base, index, disp); + break; + + case MO_UL | MO_BSWAP: + /* swapped unsigned int load with upper bits zeroed */ + tcg_out_insn(s, RXY, LRV, data, base, index, disp); + tgen_ext32u(s, data, data); + break; + case MO_UL: + tcg_out_insn(s, RXY, LLGF, data, base, index, disp); + break; + + case MO_SL | MO_BSWAP: + /* swapped sign-extended int load */ + tcg_out_insn(s, RXY, LRV, data, base, index, disp); + tgen_ext32s(s, data, data); + break; + case MO_SL: + tcg_out_insn(s, RXY, LGF, data, base, index, disp); + break; + + case MO_Q | MO_BSWAP: + tcg_out_insn(s, RXY, LRVG, data, base, index, disp); + break; + case MO_Q: + tcg_out_insn(s, RXY, LG, data, base, index, disp); + break; + + default: + tcg_abort(); + } +} + +static void tcg_out_qemu_st_direct(TCGContext *s, MemOp opc, TCGReg data, + TCGReg base, TCGReg index, int disp) +{ + switch (opc & (MO_SIZE | MO_BSWAP)) { + case MO_UB: + if (disp >= 0 && disp < 0x1000) { + tcg_out_insn(s, RX, STC, data, base, index, disp); + } else { + tcg_out_insn(s, RXY, STCY, data, base, index, disp); + } + break; + + case MO_UW | MO_BSWAP: + tcg_out_insn(s, RXY, STRVH, data, base, index, disp); + break; + case MO_UW: + if (disp >= 0 && disp < 0x1000) { + tcg_out_insn(s, RX, STH, data, base, index, disp); + } else { + tcg_out_insn(s, RXY, STHY, data, base, index, disp); + } + break; + + case MO_UL | MO_BSWAP: + tcg_out_insn(s, RXY, STRV, data, base, index, disp); + break; + case MO_UL: + if (disp >= 0 && disp < 0x1000) { + tcg_out_insn(s, RX, ST, data, base, index, disp); + } else { + tcg_out_insn(s, RXY, STY, data, base, index, disp); + } + break; + + case MO_Q | MO_BSWAP: + tcg_out_insn(s, RXY, STRVG, data, base, index, disp); + break; + case MO_Q: + tcg_out_insn(s, RXY, STG, data, base, index, disp); + break; + + default: + tcg_abort(); + } +} + +#if defined(CONFIG_SOFTMMU) +#include "../tcg-ldst.c.inc" + +/* We're expecting to use a 20-bit negative offset on the tlb memory ops. */ +QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) > 0); +QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) < -(1 << 19)); + +/* Load and compare a TLB entry, leaving the flags set. Loads the TLB + addend into R2. Returns a register with the santitized guest address. */ +static TCGReg tcg_out_tlb_read(TCGContext *s, TCGReg addr_reg, MemOp opc, + int mem_index, bool is_ld) +{ + unsigned s_bits = opc & MO_SIZE; + unsigned a_bits = get_alignment_bits(opc); + unsigned s_mask = (1 << s_bits) - 1; + unsigned a_mask = (1 << a_bits) - 1; + int fast_off = TLB_MASK_TABLE_OFS(mem_index); + int mask_off = fast_off + offsetof(CPUTLBDescFast, mask); + int table_off = fast_off + offsetof(CPUTLBDescFast, table); + int ofs, a_off; + uint64_t tlb_mask; + + tcg_out_sh64(s, RSY_SRLG, TCG_REG_R2, addr_reg, TCG_REG_NONE, + TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); + tcg_out_insn(s, RXY, NG, TCG_REG_R2, TCG_AREG0, TCG_REG_NONE, mask_off); + tcg_out_insn(s, RXY, AG, TCG_REG_R2, TCG_AREG0, TCG_REG_NONE, table_off); + + /* For aligned accesses, we check the first byte and include the alignment + bits within the address. For unaligned access, we check that we don't + cross pages using the address of the last byte of the access. */ + a_off = (a_bits >= s_bits ? 0 : s_mask - a_mask); + tlb_mask = (uint64_t)TARGET_PAGE_MASK | a_mask; + if ((s390_facilities & FACILITY_GEN_INST_EXT) && a_off == 0) { + tgen_andi_risbg(s, TCG_REG_R3, addr_reg, tlb_mask); + } else { + tcg_out_insn(s, RX, LA, TCG_REG_R3, addr_reg, TCG_REG_NONE, a_off); + tgen_andi(s, TCG_TYPE_TL, TCG_REG_R3, tlb_mask); + } + + if (is_ld) { + ofs = offsetof(CPUTLBEntry, addr_read); + } else { + ofs = offsetof(CPUTLBEntry, addr_write); + } + if (TARGET_LONG_BITS == 32) { + tcg_out_insn(s, RX, C, TCG_REG_R3, TCG_REG_R2, TCG_REG_NONE, ofs); + } else { + tcg_out_insn(s, RXY, CG, TCG_REG_R3, TCG_REG_R2, TCG_REG_NONE, ofs); + } + + tcg_out_insn(s, RXY, LG, TCG_REG_R2, TCG_REG_R2, TCG_REG_NONE, + offsetof(CPUTLBEntry, addend)); + + if (TARGET_LONG_BITS == 32) { + tgen_ext32u(s, TCG_REG_R3, addr_reg); + return TCG_REG_R3; + } + return addr_reg; +} + +static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOpIdx oi, + TCGReg data, TCGReg addr, + tcg_insn_unit *raddr, tcg_insn_unit *label_ptr) +{ + TCGLabelQemuLdst *label = new_ldst_label(s); + + label->is_ld = is_ld; + label->oi = oi; + label->datalo_reg = data; + label->addrlo_reg = addr; + label->raddr = raddr; + label->label_ptr[0] = label_ptr; +} + +static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) +{ + TCGReg addr_reg = lb->addrlo_reg; + TCGReg data_reg = lb->datalo_reg; + TCGMemOpIdx oi = lb->oi; + MemOp opc = get_memop(oi); + + if (!patch_reloc(lb->label_ptr[0], R_390_PC16DBL, + (intptr_t)s->code_ptr, 2)) { + return false; + } + + tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_AREG0); + if (TARGET_LONG_BITS == 64) { + tcg_out_mov(s, TCG_TYPE_I64, TCG_REG_R3, addr_reg); + } + tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R4, oi); + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R5, (uintptr_t)lb->raddr); + tcg_out_call(s, qemu_ld_helpers[opc & (MO_BSWAP | MO_SSIZE)]); + tcg_out_mov(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); + + tgen_gotoi(s, S390_CC_ALWAYS, lb->raddr); + return true; +} + +static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) +{ + TCGReg addr_reg = lb->addrlo_reg; + TCGReg data_reg = lb->datalo_reg; + TCGMemOpIdx oi = lb->oi; + MemOp opc = get_memop(oi); + + if (!patch_reloc(lb->label_ptr[0], R_390_PC16DBL, + (intptr_t)s->code_ptr, 2)) { + return false; + } + + tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_AREG0); + if (TARGET_LONG_BITS == 64) { + tcg_out_mov(s, TCG_TYPE_I64, TCG_REG_R3, addr_reg); + } + switch (opc & MO_SIZE) { + case MO_UB: + tgen_ext8u(s, TCG_TYPE_I64, TCG_REG_R4, data_reg); + break; + case MO_UW: + tgen_ext16u(s, TCG_TYPE_I64, TCG_REG_R4, data_reg); + break; + case MO_UL: + tgen_ext32u(s, TCG_REG_R4, data_reg); + break; + case MO_Q: + tcg_out_mov(s, TCG_TYPE_I64, TCG_REG_R4, data_reg); + break; + default: + tcg_abort(); + } + tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R5, oi); + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R6, (uintptr_t)lb->raddr); + tcg_out_call(s, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]); + + tgen_gotoi(s, S390_CC_ALWAYS, lb->raddr); + return true; +} +#else +static void tcg_prepare_user_ldst(TCGContext *s, TCGReg *addr_reg, + TCGReg *index_reg, tcg_target_long *disp) +{ + if (TARGET_LONG_BITS == 32) { + tgen_ext32u(s, TCG_TMP0, *addr_reg); + *addr_reg = TCG_TMP0; + } + if (guest_base < 0x80000) { + *index_reg = TCG_REG_NONE; + *disp = guest_base; + } else { + *index_reg = TCG_GUEST_BASE_REG; + *disp = 0; + } +} +#endif /* CONFIG_SOFTMMU */ + +static void tcg_out_qemu_ld(TCGContext* s, TCGReg data_reg, TCGReg addr_reg, + TCGMemOpIdx oi) +{ + MemOp opc = get_memop(oi); +#ifdef CONFIG_SOFTMMU + unsigned mem_index = get_mmuidx(oi); + tcg_insn_unit *label_ptr; + TCGReg base_reg; + + base_reg = tcg_out_tlb_read(s, addr_reg, opc, mem_index, 1); + + tcg_out16(s, RI_BRC | (S390_CC_NE << 4)); + label_ptr = s->code_ptr; + s->code_ptr += 1; + + tcg_out_qemu_ld_direct(s, opc, data_reg, base_reg, TCG_REG_R2, 0); + + add_qemu_ldst_label(s, 1, oi, data_reg, addr_reg, s->code_ptr, label_ptr); +#else + TCGReg index_reg; + tcg_target_long disp; + + tcg_prepare_user_ldst(s, &addr_reg, &index_reg, &disp); + tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, index_reg, disp); +#endif +} + +static void tcg_out_qemu_st(TCGContext* s, TCGReg data_reg, TCGReg addr_reg, + TCGMemOpIdx oi) +{ + MemOp opc = get_memop(oi); +#ifdef CONFIG_SOFTMMU + unsigned mem_index = get_mmuidx(oi); + tcg_insn_unit *label_ptr; + TCGReg base_reg; + + base_reg = tcg_out_tlb_read(s, addr_reg, opc, mem_index, 0); + + tcg_out16(s, RI_BRC | (S390_CC_NE << 4)); + label_ptr = s->code_ptr; + s->code_ptr += 1; + + tcg_out_qemu_st_direct(s, opc, data_reg, base_reg, TCG_REG_R2, 0); + + add_qemu_ldst_label(s, 0, oi, data_reg, addr_reg, s->code_ptr, label_ptr); +#else + TCGReg index_reg; + tcg_target_long disp; + + tcg_prepare_user_ldst(s, &addr_reg, &index_reg, &disp); + tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, index_reg, disp); +#endif +} + +# define OP_32_64(x) \ + case glue(glue(INDEX_op_,x),_i32): \ + case glue(glue(INDEX_op_,x),_i64) + +static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, + const TCGArg *args, const int *const_args) +{ + S390Opcode op, op2; + TCGArg a0, a1, a2; + + switch (opc) { + case INDEX_op_exit_tb: + /* Reuse the zeroing that exists for goto_ptr. */ + a0 = args[0]; + if (a0 == 0) { + tgen_gotoi(s, S390_CC_ALWAYS, s->code_gen_epilogue); + } else { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, a0); + tgen_gotoi(s, S390_CC_ALWAYS, tb_ret_addr); + } + break; + + case INDEX_op_goto_tb: + a0 = args[0]; + if (s->tb_jmp_insn_offset) { + /* branch displacement must be aligned for atomic patching; + * see if we need to add extra nop before branch + */ + if (!QEMU_PTR_IS_ALIGNED(s->code_ptr + 1, 4)) { + tcg_out16(s, NOP); + } + tcg_debug_assert(!USE_REG_TB); + tcg_out16(s, RIL_BRCL | (S390_CC_ALWAYS << 4)); + s->tb_jmp_insn_offset[a0] = tcg_current_code_size(s); + s->code_ptr += 2; + } else { + /* load address stored at s->tb_jmp_target_addr + a0 */ + tcg_out_ld_abs(s, TCG_TYPE_PTR, TCG_REG_TB, + s->tb_jmp_target_addr + a0); + /* and go there */ + tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_TB); + } + set_jmp_reset_offset(s, a0); + + /* For the unlinked path of goto_tb, we need to reset + TCG_REG_TB to the beginning of this TB. */ + if (USE_REG_TB) { + int ofs = -tcg_current_code_size(s); + assert(ofs == (int16_t)ofs); + tcg_out_insn(s, RI, AGHI, TCG_REG_TB, ofs); + } + break; + + case INDEX_op_goto_ptr: + a0 = args[0]; + if (USE_REG_TB) { + tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_TB, a0); + } + tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, a0); + break; + + OP_32_64(ld8u): + /* ??? LLC (RXY format) is only present with the extended-immediate + facility, whereas LLGC is always present. */ + tcg_out_mem(s, 0, RXY_LLGC, args[0], args[1], TCG_REG_NONE, args[2]); + break; + + OP_32_64(ld8s): + /* ??? LB is no smaller than LGB, so no point to using it. */ + tcg_out_mem(s, 0, RXY_LGB, args[0], args[1], TCG_REG_NONE, args[2]); + break; + + OP_32_64(ld16u): + /* ??? LLH (RXY format) is only present with the extended-immediate + facility, whereas LLGH is always present. */ + tcg_out_mem(s, 0, RXY_LLGH, args[0], args[1], TCG_REG_NONE, args[2]); + break; + + case INDEX_op_ld16s_i32: + tcg_out_mem(s, RX_LH, RXY_LHY, args[0], args[1], TCG_REG_NONE, args[2]); + break; + + case INDEX_op_ld_i32: + tcg_out_ld(s, TCG_TYPE_I32, args[0], args[1], args[2]); + break; + + OP_32_64(st8): + tcg_out_mem(s, RX_STC, RXY_STCY, args[0], args[1], + TCG_REG_NONE, args[2]); + break; + + OP_32_64(st16): + tcg_out_mem(s, RX_STH, RXY_STHY, args[0], args[1], + TCG_REG_NONE, args[2]); + break; + + case INDEX_op_st_i32: + tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); + break; + + case INDEX_op_add_i32: + a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; + if (const_args[2]) { + do_addi_32: + if (a0 == a1) { + if (a2 == (int16_t)a2) { + tcg_out_insn(s, RI, AHI, a0, a2); + break; + } + if (s390_facilities & FACILITY_EXT_IMM) { + tcg_out_insn(s, RIL, AFI, a0, a2); + break; + } + } + tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RR, AR, a0, a2); + } else { + tcg_out_insn(s, RX, LA, a0, a1, a2, 0); + } + break; + case INDEX_op_sub_i32: + a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; + if (const_args[2]) { + a2 = -a2; + goto do_addi_32; + } else if (a0 == a1) { + tcg_out_insn(s, RR, SR, a0, a2); + } else { + tcg_out_insn(s, RRF, SRK, a0, a1, a2); + } + break; + + case INDEX_op_and_i32: + a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; + if (const_args[2]) { + tcg_out_mov(s, TCG_TYPE_I32, a0, a1); + tgen_andi(s, TCG_TYPE_I32, a0, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RR, NR, a0, a2); + } else { + tcg_out_insn(s, RRF, NRK, a0, a1, a2); + } + break; + case INDEX_op_or_i32: + a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; + if (const_args[2]) { + tcg_out_mov(s, TCG_TYPE_I32, a0, a1); + tgen_ori(s, TCG_TYPE_I32, a0, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RR, OR, a0, a2); + } else { + tcg_out_insn(s, RRF, ORK, a0, a1, a2); + } + break; + case INDEX_op_xor_i32: + a0 = args[0], a1 = args[1], a2 = (uint32_t)args[2]; + if (const_args[2]) { + tcg_out_mov(s, TCG_TYPE_I32, a0, a1); + tgen_xori(s, TCG_TYPE_I32, a0, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RR, XR, args[0], args[2]); + } else { + tcg_out_insn(s, RRF, XRK, a0, a1, a2); + } + break; + + case INDEX_op_neg_i32: + tcg_out_insn(s, RR, LCR, args[0], args[1]); + break; + + case INDEX_op_mul_i32: + if (const_args[2]) { + if ((int32_t)args[2] == (int16_t)args[2]) { + tcg_out_insn(s, RI, MHI, args[0], args[2]); + } else { + tcg_out_insn(s, RIL, MSFI, args[0], args[2]); + } + } else { + tcg_out_insn(s, RRE, MSR, args[0], args[2]); + } + break; + + case INDEX_op_div2_i32: + tcg_out_insn(s, RR, DR, TCG_REG_R2, args[4]); + break; + case INDEX_op_divu2_i32: + tcg_out_insn(s, RRE, DLR, TCG_REG_R2, args[4]); + break; + + case INDEX_op_shl_i32: + op = RS_SLL; + op2 = RSY_SLLK; + do_shift32: + a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; + if (a0 == a1) { + if (const_args[2]) { + tcg_out_sh32(s, op, a0, TCG_REG_NONE, a2); + } else { + tcg_out_sh32(s, op, a0, a2, 0); + } + } else { + /* Using tcg_out_sh64 here for the format; it is a 32-bit shift. */ + if (const_args[2]) { + tcg_out_sh64(s, op2, a0, a1, TCG_REG_NONE, a2); + } else { + tcg_out_sh64(s, op2, a0, a1, a2, 0); + } + } + break; + case INDEX_op_shr_i32: + op = RS_SRL; + op2 = RSY_SRLK; + goto do_shift32; + case INDEX_op_sar_i32: + op = RS_SRA; + op2 = RSY_SRAK; + goto do_shift32; + + case INDEX_op_rotl_i32: + /* ??? Using tcg_out_sh64 here for the format; it is a 32-bit rol. */ + if (const_args[2]) { + tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_REG_NONE, args[2]); + } else { + tcg_out_sh64(s, RSY_RLL, args[0], args[1], args[2], 0); + } + break; + case INDEX_op_rotr_i32: + if (const_args[2]) { + tcg_out_sh64(s, RSY_RLL, args[0], args[1], + TCG_REG_NONE, (32 - args[2]) & 31); + } else { + tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]); + tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_TMP0, 0); + } + break; + + case INDEX_op_ext8s_i32: + tgen_ext8s(s, TCG_TYPE_I32, args[0], args[1]); + break; + case INDEX_op_ext16s_i32: + tgen_ext16s(s, TCG_TYPE_I32, args[0], args[1]); + break; + case INDEX_op_ext8u_i32: + tgen_ext8u(s, TCG_TYPE_I32, args[0], args[1]); + break; + case INDEX_op_ext16u_i32: + tgen_ext16u(s, TCG_TYPE_I32, args[0], args[1]); + break; + + OP_32_64(bswap16): + /* The TCG bswap definition requires bits 0-47 already be zero. + Thus we don't need the G-type insns to implement bswap16_i64. */ + tcg_out_insn(s, RRE, LRVR, args[0], args[1]); + tcg_out_sh32(s, RS_SRL, args[0], TCG_REG_NONE, 16); + break; + OP_32_64(bswap32): + tcg_out_insn(s, RRE, LRVR, args[0], args[1]); + break; + + case INDEX_op_add2_i32: + if (const_args[4]) { + tcg_out_insn(s, RIL, ALFI, args[0], args[4]); + } else { + tcg_out_insn(s, RR, ALR, args[0], args[4]); + } + tcg_out_insn(s, RRE, ALCR, args[1], args[5]); + break; + case INDEX_op_sub2_i32: + if (const_args[4]) { + tcg_out_insn(s, RIL, SLFI, args[0], args[4]); + } else { + tcg_out_insn(s, RR, SLR, args[0], args[4]); + } + tcg_out_insn(s, RRE, SLBR, args[1], args[5]); + break; + + case INDEX_op_br: + tgen_branch(s, S390_CC_ALWAYS, arg_label(args[0])); + break; + + case INDEX_op_brcond_i32: + tgen_brcond(s, TCG_TYPE_I32, args[2], args[0], + args[1], const_args[1], arg_label(args[3])); + break; + case INDEX_op_setcond_i32: + tgen_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], + args[2], const_args[2]); + break; + case INDEX_op_movcond_i32: + tgen_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], + args[2], const_args[2], args[3], const_args[3]); + break; + + case INDEX_op_qemu_ld_i32: + /* ??? Technically we can use a non-extending instruction. */ + case INDEX_op_qemu_ld_i64: + tcg_out_qemu_ld(s, args[0], args[1], args[2]); + break; + case INDEX_op_qemu_st_i32: + case INDEX_op_qemu_st_i64: + tcg_out_qemu_st(s, args[0], args[1], args[2]); + break; + + case INDEX_op_ld16s_i64: + tcg_out_mem(s, 0, RXY_LGH, args[0], args[1], TCG_REG_NONE, args[2]); + break; + case INDEX_op_ld32u_i64: + tcg_out_mem(s, 0, RXY_LLGF, args[0], args[1], TCG_REG_NONE, args[2]); + break; + case INDEX_op_ld32s_i64: + tcg_out_mem(s, 0, RXY_LGF, args[0], args[1], TCG_REG_NONE, args[2]); + break; + case INDEX_op_ld_i64: + tcg_out_ld(s, TCG_TYPE_I64, args[0], args[1], args[2]); + break; + + case INDEX_op_st32_i64: + tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); + break; + case INDEX_op_st_i64: + tcg_out_st(s, TCG_TYPE_I64, args[0], args[1], args[2]); + break; + + case INDEX_op_add_i64: + a0 = args[0], a1 = args[1], a2 = args[2]; + if (const_args[2]) { + do_addi_64: + if (a0 == a1) { + if (a2 == (int16_t)a2) { + tcg_out_insn(s, RI, AGHI, a0, a2); + break; + } + if (s390_facilities & FACILITY_EXT_IMM) { + if (a2 == (int32_t)a2) { + tcg_out_insn(s, RIL, AGFI, a0, a2); + break; + } else if (a2 == (uint32_t)a2) { + tcg_out_insn(s, RIL, ALGFI, a0, a2); + break; + } else if (-a2 == (uint32_t)-a2) { + tcg_out_insn(s, RIL, SLGFI, a0, -a2); + break; + } + } + } + tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RRE, AGR, a0, a2); + } else { + tcg_out_insn(s, RX, LA, a0, a1, a2, 0); + } + break; + case INDEX_op_sub_i64: + a0 = args[0], a1 = args[1], a2 = args[2]; + if (const_args[2]) { + a2 = -a2; + goto do_addi_64; + } else if (a0 == a1) { + tcg_out_insn(s, RRE, SGR, a0, a2); + } else { + tcg_out_insn(s, RRF, SGRK, a0, a1, a2); + } + break; + + case INDEX_op_and_i64: + a0 = args[0], a1 = args[1], a2 = args[2]; + if (const_args[2]) { + tcg_out_mov(s, TCG_TYPE_I64, a0, a1); + tgen_andi(s, TCG_TYPE_I64, args[0], args[2]); + } else if (a0 == a1) { + tcg_out_insn(s, RRE, NGR, args[0], args[2]); + } else { + tcg_out_insn(s, RRF, NGRK, a0, a1, a2); + } + break; + case INDEX_op_or_i64: + a0 = args[0], a1 = args[1], a2 = args[2]; + if (const_args[2]) { + tcg_out_mov(s, TCG_TYPE_I64, a0, a1); + tgen_ori(s, TCG_TYPE_I64, a0, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RRE, OGR, a0, a2); + } else { + tcg_out_insn(s, RRF, OGRK, a0, a1, a2); + } + break; + case INDEX_op_xor_i64: + a0 = args[0], a1 = args[1], a2 = args[2]; + if (const_args[2]) { + tcg_out_mov(s, TCG_TYPE_I64, a0, a1); + tgen_xori(s, TCG_TYPE_I64, a0, a2); + } else if (a0 == a1) { + tcg_out_insn(s, RRE, XGR, a0, a2); + } else { + tcg_out_insn(s, RRF, XGRK, a0, a1, a2); + } + break; + + case INDEX_op_neg_i64: + tcg_out_insn(s, RRE, LCGR, args[0], args[1]); + break; + case INDEX_op_bswap64_i64: + tcg_out_insn(s, RRE, LRVGR, args[0], args[1]); + break; + + case INDEX_op_mul_i64: + if (const_args[2]) { + if (args[2] == (int16_t)args[2]) { + tcg_out_insn(s, RI, MGHI, args[0], args[2]); + } else { + tcg_out_insn(s, RIL, MSGFI, args[0], args[2]); + } + } else { + tcg_out_insn(s, RRE, MSGR, args[0], args[2]); + } + break; + + case INDEX_op_div2_i64: + /* ??? We get an unnecessary sign-extension of the dividend + into R3 with this definition, but as we do in fact always + produce both quotient and remainder using INDEX_op_div_i64 + instead requires jumping through even more hoops. */ + tcg_out_insn(s, RRE, DSGR, TCG_REG_R2, args[4]); + break; + case INDEX_op_divu2_i64: + tcg_out_insn(s, RRE, DLGR, TCG_REG_R2, args[4]); + break; + case INDEX_op_mulu2_i64: + tcg_out_insn(s, RRE, MLGR, TCG_REG_R2, args[3]); + break; + + case INDEX_op_shl_i64: + op = RSY_SLLG; + do_shift64: + if (const_args[2]) { + tcg_out_sh64(s, op, args[0], args[1], TCG_REG_NONE, args[2]); + } else { + tcg_out_sh64(s, op, args[0], args[1], args[2], 0); + } + break; + case INDEX_op_shr_i64: + op = RSY_SRLG; + goto do_shift64; + case INDEX_op_sar_i64: + op = RSY_SRAG; + goto do_shift64; + + case INDEX_op_rotl_i64: + if (const_args[2]) { + tcg_out_sh64(s, RSY_RLLG, args[0], args[1], + TCG_REG_NONE, args[2]); + } else { + tcg_out_sh64(s, RSY_RLLG, args[0], args[1], args[2], 0); + } + break; + case INDEX_op_rotr_i64: + if (const_args[2]) { + tcg_out_sh64(s, RSY_RLLG, args[0], args[1], + TCG_REG_NONE, (64 - args[2]) & 63); + } else { + /* We can use the smaller 32-bit negate because only the + low 6 bits are examined for the rotate. */ + tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]); + tcg_out_sh64(s, RSY_RLLG, args[0], args[1], TCG_TMP0, 0); + } + break; + + case INDEX_op_ext8s_i64: + tgen_ext8s(s, TCG_TYPE_I64, args[0], args[1]); + break; + case INDEX_op_ext16s_i64: + tgen_ext16s(s, TCG_TYPE_I64, args[0], args[1]); + break; + case INDEX_op_ext_i32_i64: + case INDEX_op_ext32s_i64: + tgen_ext32s(s, args[0], args[1]); + break; + case INDEX_op_ext8u_i64: + tgen_ext8u(s, TCG_TYPE_I64, args[0], args[1]); + break; + case INDEX_op_ext16u_i64: + tgen_ext16u(s, TCG_TYPE_I64, args[0], args[1]); + break; + case INDEX_op_extu_i32_i64: + case INDEX_op_ext32u_i64: + tgen_ext32u(s, args[0], args[1]); + break; + + case INDEX_op_add2_i64: + if (const_args[4]) { + if ((int64_t)args[4] >= 0) { + tcg_out_insn(s, RIL, ALGFI, args[0], args[4]); + } else { + tcg_out_insn(s, RIL, SLGFI, args[0], -args[4]); + } + } else { + tcg_out_insn(s, RRE, ALGR, args[0], args[4]); + } + tcg_out_insn(s, RRE, ALCGR, args[1], args[5]); + break; + case INDEX_op_sub2_i64: + if (const_args[4]) { + if ((int64_t)args[4] >= 0) { + tcg_out_insn(s, RIL, SLGFI, args[0], args[4]); + } else { + tcg_out_insn(s, RIL, ALGFI, args[0], -args[4]); + } + } else { + tcg_out_insn(s, RRE, SLGR, args[0], args[4]); + } + tcg_out_insn(s, RRE, SLBGR, args[1], args[5]); + break; + + case INDEX_op_brcond_i64: + tgen_brcond(s, TCG_TYPE_I64, args[2], args[0], + args[1], const_args[1], arg_label(args[3])); + break; + case INDEX_op_setcond_i64: + tgen_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], + args[2], const_args[2]); + break; + case INDEX_op_movcond_i64: + tgen_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], + args[2], const_args[2], args[3], const_args[3]); + break; + + OP_32_64(deposit): + a0 = args[0], a1 = args[1], a2 = args[2]; + if (const_args[1]) { + tgen_deposit(s, a0, a2, args[3], args[4], 1); + } else { + /* Since we can't support "0Z" as a constraint, we allow a1 in + any register. Fix things up as if a matching constraint. */ + if (a0 != a1) { + TCGType type = (opc == INDEX_op_deposit_i64); + if (a0 == a2) { + tcg_out_mov(s, type, TCG_TMP0, a2); + a2 = TCG_TMP0; + } + tcg_out_mov(s, type, a0, a1); + } + tgen_deposit(s, a0, a2, args[3], args[4], 0); + } + break; + + OP_32_64(extract): + tgen_extract(s, args[0], args[1], args[2], args[3]); + break; + + case INDEX_op_clz_i64: + tgen_clz(s, args[0], args[1], args[2], const_args[2]); + break; + + case INDEX_op_mb: + /* The host memory model is quite strong, we simply need to + serialize the instruction stream. */ + if (args[0] & TCG_MO_ST_LD) { + tcg_out_insn(s, RR, BCR, + s390_facilities & FACILITY_FAST_BCR_SER ? 14 : 15, 0); + } + break; + + case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */ + case INDEX_op_mov_i64: + case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi. */ + case INDEX_op_movi_i64: + case INDEX_op_call: /* Always emitted via tcg_out_call. */ + default: + tcg_abort(); + } +} + +static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op) +{ + static const TCGTargetOpDef r = { .args_ct_str = { "r" } }; + static const TCGTargetOpDef r_r = { .args_ct_str = { "r", "r" } }; + static const TCGTargetOpDef r_L = { .args_ct_str = { "r", "L" } }; + static const TCGTargetOpDef L_L = { .args_ct_str = { "L", "L" } }; + static const TCGTargetOpDef r_ri = { .args_ct_str = { "r", "ri" } }; + static const TCGTargetOpDef r_r_ri = { .args_ct_str = { "r", "r", "ri" } }; + static const TCGTargetOpDef r_0_ri = { .args_ct_str = { "r", "0", "ri" } }; + static const TCGTargetOpDef r_0_rI = { .args_ct_str = { "r", "0", "rI" } }; + static const TCGTargetOpDef r_0_rJ = { .args_ct_str = { "r", "0", "rJ" } }; + static const TCGTargetOpDef a2_r + = { .args_ct_str = { "r", "r", "0", "1", "r", "r" } }; + static const TCGTargetOpDef a2_ri + = { .args_ct_str = { "r", "r", "0", "1", "ri", "r" } }; + static const TCGTargetOpDef a2_rA + = { .args_ct_str = { "r", "r", "0", "1", "rA", "r" } }; + + switch (op) { + case INDEX_op_goto_ptr: + return &r; + + case INDEX_op_ld8u_i32: + case INDEX_op_ld8u_i64: + case INDEX_op_ld8s_i32: + case INDEX_op_ld8s_i64: + case INDEX_op_ld16u_i32: + case INDEX_op_ld16u_i64: + case INDEX_op_ld16s_i32: + case INDEX_op_ld16s_i64: + case INDEX_op_ld_i32: + case INDEX_op_ld32u_i64: + case INDEX_op_ld32s_i64: + case INDEX_op_ld_i64: + case INDEX_op_st8_i32: + case INDEX_op_st8_i64: + case INDEX_op_st16_i32: + case INDEX_op_st16_i64: + case INDEX_op_st_i32: + case INDEX_op_st32_i64: + case INDEX_op_st_i64: + return &r_r; + + case INDEX_op_add_i32: + case INDEX_op_add_i64: + return &r_r_ri; + case INDEX_op_sub_i32: + case INDEX_op_sub_i64: + case INDEX_op_and_i32: + case INDEX_op_and_i64: + case INDEX_op_or_i32: + case INDEX_op_or_i64: + case INDEX_op_xor_i32: + case INDEX_op_xor_i64: + return (s390_facilities & FACILITY_DISTINCT_OPS ? &r_r_ri : &r_0_ri); + + case INDEX_op_mul_i32: + /* If we have the general-instruction-extensions, then we have + MULTIPLY SINGLE IMMEDIATE with a signed 32-bit, otherwise we + have only MULTIPLY HALFWORD IMMEDIATE, with a signed 16-bit. */ + return (s390_facilities & FACILITY_GEN_INST_EXT ? &r_0_ri : &r_0_rI); + case INDEX_op_mul_i64: + return (s390_facilities & FACILITY_GEN_INST_EXT ? &r_0_rJ : &r_0_rI); + + case INDEX_op_shl_i32: + case INDEX_op_shr_i32: + case INDEX_op_sar_i32: + return (s390_facilities & FACILITY_DISTINCT_OPS ? &r_r_ri : &r_0_ri); + + case INDEX_op_shl_i64: + case INDEX_op_shr_i64: + case INDEX_op_sar_i64: + return &r_r_ri; + + case INDEX_op_rotl_i32: + case INDEX_op_rotl_i64: + case INDEX_op_rotr_i32: + case INDEX_op_rotr_i64: + return &r_r_ri; + + case INDEX_op_brcond_i32: + case INDEX_op_brcond_i64: + return &r_ri; + + case INDEX_op_bswap16_i32: + case INDEX_op_bswap16_i64: + case INDEX_op_bswap32_i32: + case INDEX_op_bswap32_i64: + case INDEX_op_bswap64_i64: + case INDEX_op_neg_i32: + case INDEX_op_neg_i64: + case INDEX_op_ext8s_i32: + case INDEX_op_ext8s_i64: + case INDEX_op_ext8u_i32: + case INDEX_op_ext8u_i64: + case INDEX_op_ext16s_i32: + case INDEX_op_ext16s_i64: + case INDEX_op_ext16u_i32: + case INDEX_op_ext16u_i64: + case INDEX_op_ext32s_i64: + case INDEX_op_ext32u_i64: + case INDEX_op_ext_i32_i64: + case INDEX_op_extu_i32_i64: + case INDEX_op_extract_i32: + case INDEX_op_extract_i64: + return &r_r; + + case INDEX_op_clz_i64: + case INDEX_op_setcond_i32: + case INDEX_op_setcond_i64: + return &r_r_ri; + + case INDEX_op_qemu_ld_i32: + case INDEX_op_qemu_ld_i64: + return &r_L; + case INDEX_op_qemu_st_i64: + case INDEX_op_qemu_st_i32: + return &L_L; + + case INDEX_op_deposit_i32: + case INDEX_op_deposit_i64: + { + static const TCGTargetOpDef dep + = { .args_ct_str = { "r", "rZ", "r" } }; + return &dep; + } + case INDEX_op_movcond_i32: + case INDEX_op_movcond_i64: + { + static const TCGTargetOpDef movc + = { .args_ct_str = { "r", "r", "ri", "r", "0" } }; + static const TCGTargetOpDef movc_l + = { .args_ct_str = { "r", "r", "ri", "rI", "0" } }; + return (s390_facilities & FACILITY_LOAD_ON_COND2 ? &movc_l : &movc); + } + case INDEX_op_div2_i32: + case INDEX_op_div2_i64: + case INDEX_op_divu2_i32: + case INDEX_op_divu2_i64: + { + static const TCGTargetOpDef div2 + = { .args_ct_str = { "b", "a", "0", "1", "r" } }; + return &div2; + } + case INDEX_op_mulu2_i64: + { + static const TCGTargetOpDef mul2 + = { .args_ct_str = { "b", "a", "0", "r" } }; + return &mul2; + } + + case INDEX_op_add2_i32: + case INDEX_op_sub2_i32: + return (s390_facilities & FACILITY_EXT_IMM ? &a2_ri : &a2_r); + case INDEX_op_add2_i64: + case INDEX_op_sub2_i64: + return (s390_facilities & FACILITY_EXT_IMM ? &a2_rA : &a2_r); + + default: + break; + } + return NULL; +} + +static void query_s390_facilities(void) +{ + unsigned long hwcap = qemu_getauxval(AT_HWCAP); + + /* Is STORE FACILITY LIST EXTENDED available? Honestly, I believe this + is present on all 64-bit systems, but let's check for it anyway. */ + if (hwcap & HWCAP_S390_STFLE) { + register int r0 __asm__("0"); + register void *r1 __asm__("1"); + + /* stfle 0(%r1) */ + r1 = &s390_facilities; + asm volatile(".word 0xb2b0,0x1000" + : "=r"(r0) : "0"(0), "r"(r1) : "memory", "cc"); + } +} + +static void tcg_target_init(TCGContext *s) +{ + query_s390_facilities(); + + tcg_target_available_regs[TCG_TYPE_I32] = 0xffff; + tcg_target_available_regs[TCG_TYPE_I64] = 0xffff; + + tcg_target_call_clobber_regs = 0; + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R0); + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R1); + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R2); + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R3); + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R4); + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R5); + /* The r6 register is technically call-saved, but it's also a parameter + register, so it can get killed by setup for the qemu_st helper. */ + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R6); + /* The return register can be considered call-clobbered. */ + tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R14); + + s->reserved_regs = 0; + tcg_regset_set_reg(s->reserved_regs, TCG_TMP0); + /* XXX many insns can't be used with R0, so we better avoid it for now */ + tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); + tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); + if (USE_REG_TB) { + tcg_regset_set_reg(s->reserved_regs, TCG_REG_TB); + } +} + +#define FRAME_SIZE ((int)(TCG_TARGET_CALL_STACK_OFFSET \ + + TCG_STATIC_CALL_ARGS_SIZE \ + + CPU_TEMP_BUF_NLONGS * sizeof(long))) + +static void tcg_target_qemu_prologue(TCGContext *s) +{ + /* stmg %r6,%r15,48(%r15) (save registers) */ + tcg_out_insn(s, RXY, STMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, 48); + + /* aghi %r15,-frame_size */ + tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -FRAME_SIZE); + + tcg_set_frame(s, TCG_REG_CALL_STACK, + TCG_STATIC_CALL_ARGS_SIZE + TCG_TARGET_CALL_STACK_OFFSET, + CPU_TEMP_BUF_NLONGS * sizeof(long)); + +#ifndef CONFIG_SOFTMMU + if (guest_base >= 0x80000) { + tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base, true); + tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); + } +#endif + + tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); + if (USE_REG_TB) { + tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_TB, + tcg_target_call_iarg_regs[1]); + } + + /* br %r3 (go to TB) */ + tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, tcg_target_call_iarg_regs[1]); + + /* + * Return path for goto_ptr. Set return value to 0, a-la exit_tb, + * and fall through to the rest of the epilogue. + */ + s->code_gen_epilogue = s->code_ptr; + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, 0); + + /* TB epilogue */ + tb_ret_addr = s->code_ptr; + + /* lmg %r6,%r15,fs+48(%r15) (restore registers) */ + tcg_out_insn(s, RXY, LMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, + FRAME_SIZE + 48); + + /* br %r14 (return) */ + tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R14); +} + +static void tcg_out_nop_fill(tcg_insn_unit *p, int count) +{ + memset(p, 0x07, count * sizeof(tcg_insn_unit)); +} + +typedef struct { + DebugFrameHeader h; + uint8_t fde_def_cfa[4]; + uint8_t fde_reg_ofs[18]; +} DebugFrame; + +/* We're expecting a 2 byte uleb128 encoded value. */ +QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14)); + +#define ELF_HOST_MACHINE EM_S390 + +static const DebugFrame debug_frame = { + .h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */ + .h.cie.id = -1, + .h.cie.version = 1, + .h.cie.code_align = 1, + .h.cie.data_align = 8, /* sleb128 8 */ + .h.cie.return_column = TCG_REG_R14, + + /* Total FDE size does not include the "len" member. */ + .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset), + + .fde_def_cfa = { + 12, TCG_REG_CALL_STACK, /* DW_CFA_def_cfa %r15, ... */ + (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ + (FRAME_SIZE >> 7) + }, + .fde_reg_ofs = { + 0x86, 6, /* DW_CFA_offset, %r6, 48 */ + 0x87, 7, /* DW_CFA_offset, %r7, 56 */ + 0x88, 8, /* DW_CFA_offset, %r8, 64 */ + 0x89, 9, /* DW_CFA_offset, %r92, 72 */ + 0x8a, 10, /* DW_CFA_offset, %r10, 80 */ + 0x8b, 11, /* DW_CFA_offset, %r11, 88 */ + 0x8c, 12, /* DW_CFA_offset, %r12, 96 */ + 0x8d, 13, /* DW_CFA_offset, %r13, 104 */ + 0x8e, 14, /* DW_CFA_offset, %r14, 112 */ + } +}; + +void tcg_register_jit(void *buf, size_t buf_size) +{ + tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); +} |