[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] tcg-s390: New TCG Target.
|
From: |
Richard Henderson |
|
Subject: |
[Qemu-devel] [PATCH] tcg-s390: New TCG Target. |
|
Date: |
Fri, 25 Jun 2010 15:07:16 -0700 |
Original patch from Ulrich Hecht, further work from Alexander Graf
and Richard Henderson.
Cc: Ulrich Hecht <address@hidden>
Cc: Alexander Graf <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
configure | 2 +
tcg/s390/tcg-target.c | 2279 ++++++++++++++++++++++++++++++++++++++++++++++++-
tcg/s390/tcg-target.h | 56 +-
3 files changed, 2289 insertions(+), 48 deletions(-)
diff --git a/configure b/configure
index 5699f4d..b68f01a 100755
--- a/configure
+++ b/configure
@@ -733,10 +733,12 @@ case "$cpu" in
s390)
QEMU_CFLAGS="-m31 -march=z990 $QEMU_CFLAGS"
LDFLAGS="-m31 $LDFLAGS"
+ host_guest_base="yes"
;;
s390x)
QEMU_CFLAGS="-m64 -march=z990 $QEMU_CFLAGS"
LDFLAGS="-m64 $LDFLAGS"
+ host_guest_base="yes"
;;
i386)
QEMU_CFLAGS="-m32 $QEMU_CFLAGS"
diff --git a/tcg/s390/tcg-target.c b/tcg/s390/tcg-target.c
index 6f08aa4..04ac248 100644
--- a/tcg/s390/tcg-target.c
+++ b/tcg/s390/tcg-target.c
@@ -2,6 +2,8 @@
* Tiny Code Generator for QEMU
*
* Copyright (c) 2009 Ulrich Hecht <address@hidden>
+ * Copyright (c) 2009 Alexander Graf <address@hidden>
+ * Copyright (c) 2010 Richard Henderson <address@hidden>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
deal
@@ -22,81 +24,2308 @@
* THE SOFTWARE.
*/
+/* #define DEBUG_S390_TCG */
+
+#ifdef DEBUG_S390_TCG
+#define dprintf(fmt, ...) \
+ do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
+#else
+#define dprintf(fmt, ...) \
+ do { } while (0)
+#endif
+
+/* ??? 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_32 0x0100
+#define TCG_CT_CONST_NEG 0x0200
+#define TCG_CT_CONST_ADDI 0x0400
+#define TCG_CT_CONST_MULI 0x0800
+#define TCG_CT_CONST_ANDI 0x1000
+#define TCG_CT_CONST_ORI 0x2000
+#define TCG_CT_CONST_XORI 0x4000
+#define TCG_CT_CONST_CMPI 0x8000
+
+/* 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_R14
+
+#ifdef CONFIG_USE_GUEST_BASE
+#define TCG_GUEST_BASE_REG TCG_REG_R13
+#else
+#define TCG_GUEST_BASE_REG TCG_REG_R0
+#endif
+
+#ifndef GUEST_BASE
+#define GUEST_BASE 0
+#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_ALGFI = 0xc20a,
+ RIL_BRASL = 0xc005,
+ RIL_BRCL = 0xc004,
+ RIL_CFI = 0xc20d,
+ RIL_CGFI = 0xc20c,
+ RIL_CLFI = 0xc20f,
+ RIL_CLGFI = 0xc20e,
+ 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_XIHF = 0xc006,
+ RIL_XILF = 0xc007,
+
+ RI_AGHI = 0xa70b,
+ RI_AHI = 0xa70a,
+ RI_BRC = 0xa704,
+ 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,
+
+ RRE_AGR = 0xb908,
+ RRE_CGR = 0xb920,
+ RRE_CLGR = 0xb921,
+ RRE_DLGR = 0xb987,
+ RRE_DLR = 0xb997,
+ RRE_DSGFR = 0xb91d,
+ RRE_DSGR = 0xb90d,
+ 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_MSGR = 0xb90c,
+ RRE_MSR = 0xb252,
+ RRE_NGR = 0xb980,
+ RRE_OGR = 0xb981,
+ RRE_SGR = 0xb909,
+ RRE_XGR = 0xb982,
+
+ RR_AR = 0x1a,
+ 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_XR = 0x17,
+
+ RSY_RLL = 0xeb1d,
+ RSY_RLLG = 0xeb1c,
+ RSY_SLLG = 0xeb0d,
+ RSY_SRAG = 0xeb0a,
+ RSY_SRLG = 0xeb0c,
+
+ RS_SLL = 0x89,
+ RS_SRA = 0x8a,
+ RS_SRL = 0x88,
+
+ RXY_AG = 0xe308,
+ RXY_AY = 0xe35a,
+ RXY_CG = 0xe320,
+ RXY_CY = 0xe359,
+ 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_STCY = 0xe372,
+ RXY_STG = 0xe324,
+ RXY_STHY = 0xe370,
+ RXY_STMG = 0xeb24,
+ RXY_STRV = 0xe33e,
+ RXY_STRVG = 0xe32f,
+ RXY_STRVH = 0xe33f,
+ RXY_STY = 0xe350,
+
+ RX_A = 0x5a,
+ RX_C = 0x59,
+ RX_L = 0x58,
+ RX_LH = 0x48,
+ RX_ST = 0x50,
+ RX_STC = 0x42,
+ RX_STH = 0x40,
+} S390Opcode;
+
+#define LD_SIGNED 0x04
+#define LD_UINT8 0x00
+#define LD_INT8 (LD_UINT8 | LD_SIGNED)
+#define LD_UINT16 0x01
+#define LD_INT16 (LD_UINT16 | LD_SIGNED)
+#define LD_UINT32 0x02
+#define LD_INT32 (LD_UINT32 | LD_SIGNED)
+#define LD_UINT64 0x03
+#define LD_INT64 (LD_UINT64 | LD_SIGNED)
+
+#ifndef NDEBUG
+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[] = {
+ TCG_REG_R13,
+ TCG_REG_R12,
+ TCG_REG_R11,
+ TCG_REG_R10,
+ TCG_REG_R9,
+ TCG_REG_R8,
+ TCG_REG_R7,
+ TCG_REG_R6,
+ TCG_REG_R14,
+ TCG_REG_R0,
+ TCG_REG_R1,
+ 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,
+ TCG_REG_R3,
+};
+
+#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[10] = {
+ [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[10] = {
+ [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
+
+#include "../../softmmu_defs.h"
+
+static void *qemu_ld_helpers[4] = {
+ __ldb_mmu,
+ __ldw_mmu,
+ __ldl_mmu,
+ __ldq_mmu,
+};
+
+static void *qemu_st_helpers[4] = {
+ __stb_mmu,
+ __stw_mmu,
+ __stl_mmu,
+ __stq_mmu,
+};
+#endif
+
+static uint8_t *tb_ret_addr;
+
+/* A list of relevant facilities used by this translator. Some of these
+ are required for proper operation, and these are checked at startup. */
+
+#define FACILITY_ZARCH_ACTIVE (1ULL << (63 - 2))
+#define FACILITY_LONG_DISP (1ULL << (63 - 18))
+#define FACILITY_EXT_IMM (1ULL << (63 - 21))
+#define FACILITY_GEN_INST_EXT (1ULL << (63 - 34))
+
+static uint64_t facilities;
+
static void patch_reloc(uint8_t *code_ptr, int type,
- tcg_target_long value, tcg_target_long addend)
+ tcg_target_long value, tcg_target_long addend)
{
- tcg_abort();
+ tcg_target_long code_ptr_tl = (tcg_target_long)code_ptr;
+ tcg_target_long pcrel2;
+
+ /* ??? Not the usual definition of "addend". */
+ pcrel2 = (value - (code_ptr_tl + addend)) >> 1;
+
+ switch (type) {
+ case R_390_PC16DBL:
+ assert(pcrel2 == (int16_t)pcrel2);
+ *(int16_t *)code_ptr = pcrel2;
+ break;
+ case R_390_PC32DBL:
+ assert(pcrel2 == (int32_t)pcrel2);
+ *(int32_t *)code_ptr = pcrel2;
+ break;
+ default:
+ tcg_abort();
+ break;
+ }
}
-static inline int tcg_target_get_call_iarg_regs_count(int flags)
+static int tcg_target_get_call_iarg_regs_count(int flags)
{
- tcg_abort();
- return 0;
+ return sizeof(tcg_target_call_iarg_regs) / sizeof(int);
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
{
- tcg_abort();
+ const char *ct_str = *pct_str;
+
+ switch (ct_str[0]) {
+ case 'r': /* all registers */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, 0xffff);
+ break;
+ case 'R': /* not R0 */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, 0xffff);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
+ break;
+ case 'L': /* qemu_ld/st constraint */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, 0xffff);
+ tcg_regset_reset_reg (ct->u.regs, TCG_REG_R2);
+ tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
+ break;
+ case 'a': /* force R2 for division */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_clear(ct->u.regs);
+ tcg_regset_set_reg(ct->u.regs, TCG_REG_R2);
+ break;
+ case 'b': /* force R3 for division */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_clear(ct->u.regs);
+ tcg_regset_set_reg(ct->u.regs, TCG_REG_R3);
+ break;
+ case 'N': /* force immediate negate */
+ ct->ct |= TCG_CT_CONST_NEG;
+ break;
+ case 'W': /* force 32-bit ("word") immediate */
+ ct->ct |= TCG_CT_CONST_32;
+ break;
+ case 'I':
+ ct->ct |= TCG_CT_CONST_ADDI;
+ break;
+ case 'K':
+ ct->ct |= TCG_CT_CONST_MULI;
+ break;
+ case 'A':
+ ct->ct |= TCG_CT_CONST_ANDI;
+ break;
+ case 'O':
+ ct->ct |= TCG_CT_CONST_ORI;
+ break;
+ case 'X':
+ ct->ct |= TCG_CT_CONST_XORI;
+ break;
+ case 'C':
+ ct->ct |= TCG_CT_CONST_CMPI;
+ break;
+ default:
+ return -1;
+ }
+ ct_str++;
+ *pct_str = ct_str;
+
return 0;
}
+/* Immediates to be used with logical AND. This is an optimization only,
+ since a full 64-bit immediate AND can always be performed with 4 sequential
+ NI[LH][LH] instructions. What we're looking for is immediates that we
+ can load efficiently, and the immediate load plus the reg-reg AND is
+ smaller than the sequential NI's. */
+
+static int tcg_match_andi(int ct, tcg_target_ulong val)
+{
+ int i;
+
+ if (facilities & FACILITY_EXT_IMM) {
+ if (ct & TCG_CT_CONST_32) {
+ /* All 32-bit ANDs can be performed with 1 48-bit insn. */
+ return 1;
+ }
+
+ /* Zero-extensions. */
+ if (val == 0xff || val == 0xffff || val == 0xffffffff) {
+ return 1;
+ }
+ } else {
+ if (ct & TCG_CT_CONST_32) {
+ val = (uint32_t)val;
+ } else if (val == 0xffffffff) {
+ return 1;
+ }
+ }
+
+ /* 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) == mask) {
+ return 1;
+ }
+ }
+
+ /* Look for 16-bit values performing the mask. These are better
+ to load with LLI[LH][LH]. */
+ for (i = 0; i < 4; i++) {
+ tcg_target_ulong mask = 0xffffull << i*16;
+ if ((val & mask) == val) {
+ return 0;
+ }
+ }
+
+ /* Look for 32-bit values performing the 64-bit mask. These
+ are better to load with LLI[LH]F, or if extended immediates
+ not available, with a pair of LLI insns. */
+ if ((ct & TCG_CT_CONST_32) == 0) {
+ if (val <= 0xffffffff || (val & 0xffffffff) == 0) {
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+/* Immediates to be used with logical OR. This is an optimization only,
+ since a full 64-bit immediate OR can always be performed with 4 sequential
+ OI[LH][LH] instructions. What we're looking for is immediates that we
+ can load efficiently, and the immediate load plus the reg-reg OR is
+ smaller than the sequential OI's. */
+
+static int tcg_match_ori(int ct, tcg_target_long val)
+{
+ if (facilities & FACILITY_EXT_IMM) {
+ if (ct & TCG_CT_CONST_32) {
+ /* All 32-bit ORs can be performed with 1 48-bit insn. */
+ return 1;
+ }
+ }
+
+ /* Look for negative values. These are best to load with LGHI. */
+ if (val < 0) {
+ if (val == (int16_t)val) {
+ return 0;
+ }
+ if (facilities & FACILITY_EXT_IMM) {
+ if (val == (int32_t)val) {
+ return 0;
+ }
+ }
+ }
+
+ return 1;
+}
+
+/* Immediates to be used with logical XOR. This is almost, but not quite,
+ only an optimization. XOR with immediate is only supported with the
+ extended-immediate facility. That said, there are a few patterns for
+ which it is better to load the value into a register first. */
+
+static int tcg_match_xori(int ct, tcg_target_long val)
+{
+ if ((facilities & FACILITY_EXT_IMM) == 0) {
+ return 0;
+ }
+
+ if (ct & TCG_CT_CONST_32) {
+ /* All 32-bit XORs can be performed with 1 48-bit insn. */
+ return 1;
+ }
+
+ /* Look for negative values. These are best to load with LGHI. */
+ if (val < 0 && val == (int32_t)val) {
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Imediates to be used with comparisons. */
+
+static int tcg_match_cmpi(int ct, tcg_target_long val)
+{
+ if (facilities & FACILITY_EXT_IMM) {
+ /* The COMPARE IMMEDIATE instruction is available. */
+ if (ct & TCG_CT_CONST_32) {
+ /* We have a 32-bit immediate and can compare against anything. */
+ return 1;
+ } else {
+ /* ??? We have no insight here into whether the comparison is
+ signed or unsigned. The COMPARE IMMEDIATE insn uses a 32-bit
+ signed immediate, and the COMPARE LOGICAL IMMEDIATE insn uses
+ a 32-bit unsigned immediate. If we were to use the (semi)
+ obvious "val == (int32_t)val" we would be enabling unsigned
+ comparisons vs very large numbers. The only solution is to
+ take the intersection of the ranges. */
+ /* ??? Another possible solution is to simply lie and allow all
+ constants here and force the out-of-range values into a temp
+ register in tgen_cmp when we have knowledge of the actual
+ comparison code in use. */
+ return val >= 0 && val <= 0x7fffffff;
+ }
+ } else {
+ /* Only the LOAD AND TEST instruction is available. */
+ return val == 0;
+ }
+}
+
/* Test if a constant matches the constraint. */
-static inline int tcg_target_const_match(tcg_target_long val,
- const TCGArgConstraint *arg_ct)
+static int tcg_target_const_match(tcg_target_long val,
+ const TCGArgConstraint *arg_ct)
{
- tcg_abort();
+ int ct = arg_ct->ct;
+
+ if (ct & TCG_CT_CONST) {
+ return 1;
+ }
+
+ /* Handle the modifiers. */
+ if (ct & TCG_CT_CONST_NEG) {
+ val = -val;
+ }
+ if (ct & TCG_CT_CONST_32) {
+ val = (int32_t)val;
+ }
+
+ /* The following are mutually exclusive. */
+ if (ct & TCG_CT_CONST_ADDI) {
+ /* Immediates that may be used with add. If we have the
+ extended-immediates facility then we have ADD IMMEDIATE
+ with signed and unsigned 32-bit, otherwise we have only
+ ADD HALFWORD IMMEDIATE with a signed 16-bit. */
+ if (facilities & FACILITY_EXT_IMM) {
+ return val == (int32_t)val || val == (uint32_t)val;
+ } else {
+ return val == (int16_t)val;
+ }
+ } else if (ct & TCG_CT_CONST_MULI) {
+ /* Immediates that may be used with multiply. 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. */
+ if (facilities & FACILITY_GEN_INST_EXT) {
+ return val == (int32_t)val;
+ } else {
+ return val == (int16_t)val;
+ }
+ } else if (ct & TCG_CT_CONST_ANDI) {
+ return tcg_match_andi(ct, val);
+ } else if (ct & TCG_CT_CONST_ORI) {
+ return tcg_match_ori(ct, val);
+ } else if (ct & TCG_CT_CONST_XORI) {
+ return tcg_match_xori(ct, val);
+ } else if (ct & TCG_CT_CONST_CMPI) {
+ return tcg_match_cmpi(ct, val);
+ }
+
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_RI(TCGContext *s, S390Opcode op, TCGReg r1, int i2)
+{
+ tcg_out32(s, (op << 16) | (r1 << 20) | (i2 & 0xffff));
+}
+
+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 void 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);
+ }
+ }
+}
+
/* load a register with an immediate value */
-static inline void tcg_out_movi(TCGContext *s, TCGType type,
- int ret, tcg_target_long arg)
+static void tcg_out_movi(TCGContext *s, TCGType type,
+ TCGReg ret, tcg_target_long sval)
{
- tcg_abort();
+ static const S390Opcode lli_insns[4] = {
+ RI_LLILL, RI_LLILH, RI_LLIHL, RI_LLIHH
+ };
+
+ 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;
+ }
+
+ 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;
+ }
+ }
+
+ /* Try all 48-bit insns that can load it in one go. */
+ if (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 >> 31 >> 1);
+ return;
+ }
+ }
+
+ /* Try for PC-relative address load. */
+ if ((sval & 1) == 0) {
+ intptr_t off = (sval - (intptr_t)s->code_ptr) >> 1;
+ if (off == (int32_t)off) {
+ tcg_out_insn(s, RIL, LARL, ret, off);
+ return;
+ }
+ }
+
+ /* If extended immediates are not present, then we may have to issue
+ several instructions to load the low 32 bits. */
+ if (!(facilities & FACILITY_EXT_IMM)) {
+ /* A 32-bit unsigned value can be loaded in 2 insns. And given
+ that the lli_insns loop 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;
+ }
+
+ /* If all high bits are set, the value can be loaded in 2 or 3 insns.
+ We first want to make sure that all the high bits get set. With
+ luck the low 16-bits can be considered negative to perform that for
+ free, otherwise we load an explicit -1. */
+ if (sval >> 31 >> 1 == -1) {
+ if (uval & 0x8000) {
+ tcg_out_insn(s, RI, LGHI, ret, uval);
+ } else {
+ tcg_out_insn(s, RI, LGHI, ret, -1);
+ tcg_out_insn(s, RI, IILL, ret, uval);
+ }
+ tcg_out_insn(s, RI, IILH, ret, uval >> 16);
+ return;
+ }
+ }
+
+ /* If we get here, both the high and low parts have non-zero bits. */
+
+ /* Recurse to load the lower 32-bits. */
+ tcg_out_movi(s, TCG_TYPE_I32, ret, sval);
+
+ /* Insert data into the high 32-bits. */
+ uval = uval >> 31 >> 1;
+ if (facilities & FACILITY_EXT_IMM) {
+ if (uval < 0x10000) {
+ tcg_out_insn(s, RI, IIHL, ret, uval);
+ } else if ((uval & 0xffff) == 0) {
+ tcg_out_insn(s, RI, IIHH, ret, uval >> 16);
+ } else {
+ tcg_out_insn(s, RIL, IIHF, ret, uval);
+ }
+ } else {
+ if (uval & 0xffff) {
+ tcg_out_insn(s, RI, IIHL, ret, uval);
+ }
+ if (uval & 0xffff0000) {
+ tcg_out_insn(s, RI, IIHH, ret, uval >> 16);
+ }
+ }
+}
+
+
+/* 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 16 bits of the offset with the actual load insn;
+ the high 48 bits must come from an immediate load. */
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs & ~0xffff);
+ ofs &= 0xffff;
+
+ /* 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, int arg,
- int arg1, tcg_target_long arg2)
+static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data,
+ TCGReg base, tcg_target_long ofs)
{
- tcg_abort();
+ 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, int arg,
- int arg1, tcg_target_long arg2)
+static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data,
+ TCGReg base, tcg_target_long ofs)
{
- tcg_abort();
+ 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);
+ }
+}
+
+/* load data from an absolute host address */
+static void tcg_out_ld_abs(TCGContext *s, TCGType type, TCGReg dest, void *abs)
+{
+ tcg_target_long addr = (tcg_target_long)abs;
+
+ if (facilities & FACILITY_GEN_INST_EXT) {
+ tcg_target_long disp = (addr - (tcg_target_long)s->code_ptr) >> 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;
+ }
+ }
+
+ tcg_out_movi(s, TCG_TYPE_PTR, dest, addr & ~0xffff);
+ tcg_out_ld(s, type, dest, dest, addr & 0xffff);
+}
+
+static void tgen_ext8s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src)
+{
+ if (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 (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 (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 (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);
+}
+
+static inline void tgen32_addi(TCGContext *s, TCGReg dest, int32_t val)
+{
+ if (val == (int16_t)val) {
+ tcg_out_insn(s, RI, AHI, dest, val);
+ } else {
+ tcg_out_insn(s, RIL, AFI, dest, val);
+ }
+}
+
+static inline void tgen64_addi(TCGContext *s, TCGReg dest, int64_t val)
+{
+ if (val == (int16_t)val) {
+ tcg_out_insn(s, RI, AGHI, dest, val);
+ } else if (val == (int32_t)val) {
+ tcg_out_insn(s, RIL, AGFI, dest, val);
+ } else if (val == (uint32_t)val) {
+ tcg_out_insn(s, RIL, ALGFI, dest, val);
+ } else {
+ tcg_abort();
+ }
+
+}
+
+static void tgen64_andi(TCGContext *s, TCGReg dest, tcg_target_ulong 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
+ };
+
+ int i;
+
+ /* Look for no-op. */
+ if (val == -1) {
+ return;
+ }
+
+ /* Look for the zero-extensions. */
+ if (val == 0xffffffff) {
+ tgen_ext32u(s, dest, dest);
+ return;
+ }
+
+ if (facilities & FACILITY_EXT_IMM) {
+ if (val == 0xff) {
+ tgen_ext8u(s, TCG_TYPE_I64, dest, dest);
+ return;
+ }
+ if (val == 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 & 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 (facilities & FACILITY_EXT_IMM) {
+ for (i = 0; i < 2; i++) {
+ tcg_target_ulong mask = ~(0xffffffffull << i*32);
+ if ((val & mask) == mask) {
+ tcg_out_insn_RIL(s, nif_insns[i], dest, val >> i*32);
+ return;
+ }
+ }
+ }
+
+ /* Perform the AND via sequential modifications to the high and low
+ parts. Do this via recursion to handle 16-bit vs 32-bit masks in
+ each half. */
+ tgen64_andi(s, dest, val | 0xffffffff00000000ull);
+ tgen64_andi(s, dest, val | 0x00000000ffffffffull);
+ } else {
+ /* With no extended-immediate facility, just emit the sequence. */
+ for (i = 0; i < 4; i++) {
+ tcg_target_ulong mask = 0xffffull << i*16;
+ if ((val & mask) != mask) {
+ tcg_out_insn_RI(s, ni_insns[i], dest, val >> i*16);
+ }
+ }
+ }
+}
+
+static void tgen64_ori(TCGContext *s, TCGReg dest, tcg_target_ulong val)
+{
+ static const S390Opcode oi_insns[4] = {
+ RI_OILL, RI_OILH, RI_OIHL, RI_OIHH
+ };
+ static const S390Opcode nif_insns[2] = {
+ RIL_OILF, RIL_OIHF
+ };
+
+ int i;
+
+ /* Look for no-op. */
+ if (val == 0) {
+ return;
+ }
+
+ if (facilities & FACILITY_EXT_IMM) {
+ /* 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. */
+ 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, nif_insns[i], dest, val >> i*32);
+ return;
+ }
+ }
+
+ /* 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. */
+ tgen64_ori(s, dest, val & 0x00000000ffffffffull);
+ tgen64_ori(s, dest, val & 0xffffffff00000000ull);
+ } else {
+ /* With no extended-immediate facility, we don't need to be so
+ clever. Just iterate over the insns and mask in the constant. */
+ for (i = 0; i < 4; i++) {
+ tcg_target_ulong mask = (0xffffull << i*16);
+ if ((val & mask) != 0) {
+ tcg_out_insn_RI(s, oi_insns[i], dest, val >> i*16);
+ }
+ }
+ }
+}
+
+static void tgen64_xori(TCGContext *s, TCGReg dest, tcg_target_ulong val)
+{
+ /* Perform the xor by parts. */
+ if (val & 0xffffffff) {
+ tcg_out_insn(s, RIL, XILF, dest, val);
+ }
+ if (val > 0xffffffff) {
+ tcg_out_insn(s, RIL, XIHF, dest, val >> 31 >> 1);
+ }
+}
+
+static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1,
+ TCGArg c2, int c2const)
+{
+ bool is_unsigned = (c > TCG_COND_GT);
+ if (c2const) {
+ if (c2 == 0) {
+ 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];
+ } else {
+ if (is_unsigned) {
+ if (type == TCG_TYPE_I32) {
+ tcg_out_insn(s, RIL, CLFI, r1, c2);
+ } else {
+ tcg_out_insn(s, RIL, CLGFI, r1, c2);
+ }
+ } else {
+ if (type == TCG_TYPE_I32) {
+ tcg_out_insn(s, RIL, CFI, r1, c2);
+ } else {
+ tcg_out_insn(s, RIL, CGFI, r1, c2);
+ }
+ }
+ }
+ } else {
+ if (is_unsigned) {
+ if (type == TCG_TYPE_I32) {
+ tcg_out_insn(s, RR, CLR, r1, c2);
+ } else {
+ tcg_out_insn(s, RRE, CLGR, r1, c2);
+ }
+ } else {
+ if (type == TCG_TYPE_I32) {
+ tcg_out_insn(s, RR, CR, r1, c2);
+ } else {
+ tcg_out_insn(s, RRE, CGR, r1, c2);
+ }
+ }
+ }
+ return tcg_cond_to_s390_cond[c];
+}
+
+static void tgen_setcond(TCGContext *s, TCGType type, TCGCond c,
+ TCGReg dest, TCGReg r1, TCGArg c2, int c2const)
+{
+ int cc = tgen_cmp(s, type, c, r1, c2, c2const);
+
+ /* Emit: r1 = 1; if (cc) goto over; r1 = 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_gotoi(TCGContext *s, int cc, tcg_target_long dest)
+{
+ tcg_target_long off = (dest - (tcg_target_long)s->code_ptr) >> 1;
+ if (off > -0x8000 && off < 0x7fff) {
+ 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, dest);
+ tcg_out_insn(s, RR, BCR, cc, TCG_TMP0);
+ }
+}
+
+static void tgen_branch(TCGContext *s, int cc, int labelno)
+{
+ TCGLabel* l = &s->labels[labelno];
+ if (l->has_value) {
+ tgen_gotoi(s, cc, l->u.value);
+ } else if (USE_LONG_BRANCHES) {
+ tcg_out16(s, RIL_BRCL | (cc << 4));
+ tcg_out_reloc(s, s->code_ptr, R_390_PC32DBL, labelno, -2);
+ s->code_ptr += 4;
+ } else {
+ tcg_out16(s, RI_BRC | (cc << 4));
+ tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, labelno, -2);
+ s->code_ptr += 2;
+ }
}
+static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc,
+ TCGReg r1, TCGReg r2, int labelno)
+{
+ TCGLabel* l = &s->labels[labelno];
+ tcg_target_long off;
+
+ if (l->has_value) {
+ off = (l->u.value - (tcg_target_long)s->code_ptr) >> 1;
+ } else {
+ /* We need to keep the offset unchanged for retranslation. */
+ off = ((int16_t *)s->code_ptr)[1];
+ tcg_out_reloc(s, s->code_ptr + 2, R_390_PC16DBL, labelno, -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, int labelno)
+{
+ TCGLabel* l = &s->labels[labelno];
+ tcg_target_long off;
+
+ if (l->has_value) {
+ off = (l->u.value - (tcg_target_long)s->code_ptr) >> 1;
+ } else {
+ /* We need to keep the offset unchanged for retranslation. */
+ off = ((int16_t *)s->code_ptr)[1];
+ tcg_out_reloc(s, s->code_ptr + 2, R_390_PC16DBL, labelno, -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, int labelno)
+{
+ int cc;
+
+ if (facilities & FACILITY_GEN_INST_EXT) {
+ bool is_unsigned = (c > TCG_COND_GT);
+ 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, labelno);
+ 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, labelno);
+ return;
+ }
+ }
+
+ cc = tgen_cmp(s, type, c, r1, c2, c2const);
+ tgen_branch(s, cc, labelno);
+}
+
+static void tgen_calli(TCGContext *s, tcg_target_long dest)
+{
+ tcg_target_long off = (dest - (tcg_target_long)s->code_ptr) >> 1;
+ if (off == (int32_t)off) {
+ tcg_out_insn(s, RIL, BRASL, TCG_REG_R14, off);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, dest);
+ tcg_out_insn(s, RR, BASR, TCG_REG_R14, TCG_TMP0);
+ }
+}
+
+static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data,
+ TCGReg base, TCGReg index, int disp)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+ const int bswap = 0;
+#else
+ const int bswap = 1;
+#endif
+ switch (opc) {
+ case LD_UINT8:
+ tcg_out_insn(s, RXY, LLGC, data, base, index, disp);
+ break;
+ case LD_INT8:
+ tcg_out_insn(s, RXY, LGB, data, base, index, disp);
+ break;
+ case LD_UINT16:
+ if (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);
+ } else {
+ tcg_out_insn(s, RXY, LLGH, data, base, index, disp);
+ }
+ break;
+ case LD_INT16:
+ if (bswap) {
+ /* swapped sign-extended halfword load */
+ tcg_out_insn(s, RXY, LRVH, data, base, index, disp);
+ tgen_ext16s(s, TCG_TYPE_I64, data, data);
+ } else {
+ tcg_out_insn(s, RXY, LGH, data, base, index, disp);
+ }
+ break;
+ case LD_UINT32:
+ if (bswap) {
+ /* swapped unsigned int load with upper bits zeroed */
+ tcg_out_insn(s, RXY, LRV, data, base, index, disp);
+ tgen_ext32u(s, data, data);
+ } else {
+ tcg_out_insn(s, RXY, LLGF, data, base, index, disp);
+ }
+ break;
+ case LD_INT32:
+ if (bswap) {
+ /* swapped sign-extended int load */
+ tcg_out_insn(s, RXY, LRV, data, base, index, disp);
+ tgen_ext32s(s, data, data);
+ } else {
+ tcg_out_insn(s, RXY, LGF, data, base, index, disp);
+ }
+ break;
+ case LD_UINT64:
+ if (bswap) {
+ tcg_out_insn(s, RXY, LRVG, data, base, index, disp);
+ } else {
+ tcg_out_insn(s, RXY, LG, data, base, index, disp);
+ }
+ break;
+ default:
+ tcg_abort();
+ }
+}
+
+static void tcg_out_qemu_st_direct(TCGContext *s, int opc, TCGReg data,
+ TCGReg base, TCGReg index, int disp)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+ const int bswap = 0;
+#else
+ const int bswap = 1;
+#endif
+ switch (opc) {
+ case LD_UINT8:
+ 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 LD_UINT16:
+ if (bswap) {
+ tcg_out_insn(s, RXY, STRVH, data, base, index, disp);
+ } else 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 LD_UINT32:
+ if (bswap) {
+ tcg_out_insn(s, RXY, STRV, data, base, index, disp);
+ } else 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 LD_UINT64:
+ if (bswap) {
+ tcg_out_insn(s, RXY, STRVG, data, base, index, disp);
+ } else {
+ tcg_out_insn(s, RXY, STG, data, base, index, disp);
+ }
+ break;
+ default:
+ tcg_abort();
+ }
+}
+
+#if defined(CONFIG_SOFTMMU)
+static void tgen64_andi_tmp(TCGContext *s, TCGReg dest, tcg_target_ulong val)
+{
+ if (tcg_match_andi(0, val)) {
+ tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, val);
+ tcg_out_insn(s, RRE, NGR, dest, TCG_TMP0);
+ } else {
+ tgen64_andi(s, dest, val);
+ }
+}
+
+static void tcg_prepare_qemu_ldst(TCGContext* s, TCGReg data_reg,
+ TCGReg addr_reg, int mem_index, int opc,
+ uint16_t **label2_ptr_p, int is_store)
+{
+ const TCGReg arg0 = TCG_REG_R2;
+ const TCGReg arg1 = TCG_REG_R3;
+ int s_bits = opc & 3;
+ uint16_t *label1_ptr;
+ tcg_target_long ofs;
+
+ if (TARGET_LONG_BITS == 32) {
+ tgen_ext32u(s, arg0, addr_reg);
+ } else {
+ tcg_out_mov(s, TCG_TYPE_I64, arg0, addr_reg);
+ }
+
+ tcg_out_sh64(s, RSY_SRLG, arg1, addr_reg, TCG_REG_NONE,
+ TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
+
+ tgen64_andi_tmp(s, arg0, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
+ tgen64_andi_tmp(s, arg1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
+
+ if (is_store) {
+ ofs = offsetof(CPUState, tlb_table[mem_index][0].addr_write);
+ } else {
+ ofs = offsetof(CPUState, tlb_table[mem_index][0].addr_read);
+ }
+ assert(ofs < 0x80000);
+
+ if (TARGET_LONG_BITS == 32) {
+ tcg_out_mem(s, RX_C, RXY_CY, arg0, arg1, TCG_AREG0, ofs);
+ } else {
+ tcg_out_mem(s, 0, RXY_CG, arg0, arg1, TCG_AREG0, ofs);
+ }
+
+ if (TARGET_LONG_BITS == 32) {
+ tgen_ext32u(s, arg0, addr_reg);
+ } else {
+ tcg_out_mov(s, TCG_TYPE_I64, arg0, addr_reg);
+ }
+
+ label1_ptr = (uint16_t*)s->code_ptr;
+
+ /* je label1 (offset will be patched in later) */
+ tcg_out_insn(s, RI, BRC, S390_CC_EQ, 0);
+
+ /* call load/store helper */
+ if (is_store) {
+ /* Make sure to zero-extend the value to the full register
+ for the calling convention. */
+ switch (opc) {
+ case LD_UINT8:
+ tgen_ext8u(s, TCG_TYPE_I64, arg1, data_reg);
+ break;
+ case LD_UINT16:
+ tgen_ext16u(s, TCG_TYPE_I64, arg1, data_reg);
+ break;
+ case LD_UINT32:
+ tgen_ext32u(s, arg1, data_reg);
+ break;
+ case LD_UINT64:
+ tcg_out_mov(s, TCG_TYPE_I64, arg1, data_reg);
+ break;
+ default:
+ tcg_abort();
+ }
+ tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R4, mem_index);
+ tgen_calli(s, (tcg_target_ulong)qemu_st_helpers[s_bits]);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I32, arg1, mem_index);
+ tgen_calli(s, (tcg_target_ulong)qemu_ld_helpers[s_bits]);
+
+ /* sign extension */
+ switch (opc) {
+ case LD_INT8:
+ tgen_ext8s(s, TCG_TYPE_I64, data_reg, arg0);
+ break;
+ case LD_INT16:
+ tgen_ext16s(s, TCG_TYPE_I64, data_reg, arg0);
+ break;
+ case LD_INT32:
+ tgen_ext32s(s, data_reg, arg0);
+ break;
+ default:
+ /* unsigned -> just copy */
+ tcg_out_mov(s, TCG_TYPE_I64, data_reg, arg0);
+ break;
+ }
+ }
+
+ /* jump to label2 (end) */
+ *label2_ptr_p = (uint16_t*)s->code_ptr;
+
+ tcg_out_insn(s, RI, BRC, S390_CC_ALWAYS, 0);
+
+ /* this is label1, patch branch */
+ *(label1_ptr + 1) = ((unsigned long)s->code_ptr -
+ (unsigned long)label1_ptr) >> 1;
+
+ ofs = offsetof(CPUState, tlb_table[mem_index][0].addend);
+ assert(ofs < 0x80000);
+
+ tcg_out_mem(s, 0, RXY_AG, arg0, arg1, TCG_AREG0, ofs);
+}
+
+static void tcg_finish_qemu_ldst(TCGContext* s, uint16_t *label2_ptr)
+{
+ /* patch branch */
+ *(label2_ptr + 1) = ((unsigned long)s->code_ptr -
+ (unsigned long)label2_ptr) >> 1;
+}
+#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 */
+
+/* load data with address translation (if applicable)
+ and endianness conversion */
+static void tcg_out_qemu_ld(TCGContext* s, const TCGArg* args, int opc)
+{
+ TCGReg addr_reg, data_reg;
+#if defined(CONFIG_SOFTMMU)
+ int mem_index;
+ uint16_t *label2_ptr;
+#else
+ TCGReg index_reg;
+ tcg_target_long disp;
+#endif
+
+ data_reg = *args++;
+ addr_reg = *args++;
+
+#if defined(CONFIG_SOFTMMU)
+ mem_index = *args;
+
+ tcg_prepare_qemu_ldst(s, data_reg, addr_reg, mem_index,
+ opc, &label2_ptr, 0);
+
+ tcg_out_qemu_ld_direct(s, opc, data_reg, TCG_REG_R2, TCG_REG_NONE, 0);
+
+ tcg_finish_qemu_ldst(s, label2_ptr);
+#else
+ 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, const TCGArg* args, int opc)
+{
+ TCGReg addr_reg, data_reg;
+#if defined(CONFIG_SOFTMMU)
+ int mem_index;
+ uint16_t *label2_ptr;
+#else
+ TCGReg index_reg;
+ tcg_target_long disp;
+#endif
+
+ data_reg = *args++;
+ addr_reg = *args++;
+
+#if defined(CONFIG_SOFTMMU)
+ mem_index = *args;
+
+ tcg_prepare_qemu_ldst(s, data_reg, addr_reg, mem_index,
+ opc, &label2_ptr, 1);
+
+ tcg_out_qemu_st_direct(s, opc, data_reg, TCG_REG_R2, TCG_REG_NONE, 0);
+
+ tcg_finish_qemu_ldst(s, label2_ptr);
+#else
+ 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
+}
+
+#if TCG_TARGET_REG_BITS == 64
+# define OP_32_64(x) \
+ case glue(glue(INDEX_op_,x),_i32): \
+ case glue(glue(INDEX_op_,x),_i64)
+#else
+# define OP_32_64(x) \
+ case glue(glue(INDEX_op_,x),_i32)
+#endif
+
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
const TCGArg *args, const int *const_args)
{
- tcg_abort();
+ S390Opcode op;
+
+ switch (opc) {
+ case INDEX_op_exit_tb:
+ /* return value */
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, args[0]);
+ tgen_gotoi(s, S390_CC_ALWAYS, (unsigned long)tb_ret_addr);
+ break;
+
+ case INDEX_op_goto_tb:
+ if (s->tb_jmp_offset) {
+ tcg_abort();
+ } else {
+ /* load address stored at s->tb_next + args[0] */
+ tcg_out_ld_abs(s, TCG_TYPE_PTR, TCG_TMP0, s->tb_next + args[0]);
+ /* and go there */
+ tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_TMP0);
+ }
+ s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
+ break;
+
+ case INDEX_op_call:
+ if (const_args[0]) {
+ tgen_calli(s, args[0]);
+ } else {
+ tcg_out_insn(s, RR, BASR, TCG_REG_R14, args[0]);
+ }
+ break;
+
+ case INDEX_op_mov_i32:
+ tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]);
+ break;
+ case INDEX_op_movi_i32:
+ tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]);
+ 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:
+ if (const_args[2]) {
+ tgen32_addi(s, args[0], args[2]);
+ } else {
+ tcg_out_insn(s, RR, AR, args[0], args[2]);
+ }
+ break;
+ case INDEX_op_sub_i32:
+ if (const_args[2]) {
+ tgen32_addi(s, args[0], -args[2]);
+ } else {
+ tcg_out_insn(s, RR, SR, args[0], args[2]);
+ }
+ break;
+
+ case INDEX_op_and_i32:
+ if (const_args[2]) {
+ tgen64_andi(s, args[0], args[2] | 0xffffffff00000000ull);
+ } else {
+ tcg_out_insn(s, RR, NR, args[0], args[2]);
+ }
+ break;
+ case INDEX_op_or_i32:
+ if (const_args[2]) {
+ tgen64_ori(s, args[0], args[2] & 0xffffffff);
+ } else {
+ tcg_out_insn(s, RR, OR, args[0], args[2]);
+ }
+ break;
+ case INDEX_op_xor_i32:
+ if (const_args[2]) {
+ tgen64_xori(s, args[0], args[2] & 0xffffffff);
+ } else {
+ tcg_out_insn(s, RR, XR, args[0], args[2]);
+ }
+ 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;
+ do_shift32:
+ if (const_args[2]) {
+ tcg_out_sh32(s, op, args[0], TCG_REG_NONE, args[2]);
+ } else {
+ tcg_out_sh32(s, op, args[0], args[2], 0);
+ }
+ break;
+ case INDEX_op_shr_i32:
+ op = RS_SRL;
+ goto do_shift32;
+ case INDEX_op_sar_i32:
+ op = RS_SRA;
+ 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_br:
+ tgen_branch(s, S390_CC_ALWAYS, args[0]);
+ break;
+
+ case INDEX_op_brcond_i32:
+ tgen_brcond(s, TCG_TYPE_I32, args[2], args[0],
+ args[1], const_args[1], 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_qemu_ld8u:
+ tcg_out_qemu_ld(s, args, LD_UINT8);
+ break;
+ case INDEX_op_qemu_ld8s:
+ tcg_out_qemu_ld(s, args, LD_INT8);
+ break;
+ case INDEX_op_qemu_ld16u:
+ tcg_out_qemu_ld(s, args, LD_UINT16);
+ break;
+ case INDEX_op_qemu_ld16s:
+ tcg_out_qemu_ld(s, args, LD_INT16);
+ break;
+ case INDEX_op_qemu_ld32:
+ /* ??? Technically we can use a non-extending instruction. */
+ tcg_out_qemu_ld(s, args, LD_UINT32);
+ break;
+ case INDEX_op_qemu_ld64:
+ tcg_out_qemu_ld(s, args, LD_UINT64);
+ break;
+
+ case INDEX_op_qemu_st8:
+ tcg_out_qemu_st(s, args, LD_UINT8);
+ break;
+ case INDEX_op_qemu_st16:
+ tcg_out_qemu_st(s, args, LD_UINT16);
+ break;
+ case INDEX_op_qemu_st32:
+ tcg_out_qemu_st(s, args, LD_UINT32);
+ break;
+ case INDEX_op_qemu_st64:
+ tcg_out_qemu_st(s, args, LD_UINT64);
+ break;
+
+#if TCG_TARGET_REG_BITS == 64
+ case INDEX_op_mov_i64:
+ tcg_out_mov(s, TCG_TYPE_I64, args[0], args[1]);
+ break;
+ case INDEX_op_movi_i64:
+ tcg_out_movi(s, TCG_TYPE_I64, args[0], args[1]);
+ 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:
+ if (const_args[2]) {
+ tgen64_addi(s, args[0], args[2]);
+ } else {
+ tcg_out_insn(s, RRE, AGR, args[0], args[2]);
+ }
+ break;
+ case INDEX_op_sub_i64:
+ if (const_args[2]) {
+ tgen64_addi(s, args[0], -args[2]);
+ } else {
+ tcg_out_insn(s, RRE, SGR, args[0], args[2]);
+ }
+ break;
+
+ case INDEX_op_and_i64:
+ if (const_args[2]) {
+ tgen64_andi(s, args[0], args[2]);
+ } else {
+ tcg_out_insn(s, RRE, NGR, args[0], args[2]);
+ }
+ break;
+ case INDEX_op_or_i64:
+ if (const_args[2]) {
+ tgen64_ori(s, args[0], args[2]);
+ } else {
+ tcg_out_insn(s, RRE, OGR, args[0], args[2]);
+ }
+ break;
+ case INDEX_op_xor_i64:
+ if (const_args[2]) {
+ tgen64_xori(s, args[0], args[2]);
+ } else {
+ tcg_out_insn(s, RRE, XGR, args[0], args[2]);
+ }
+ 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_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_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_ext32u_i64:
+ tgen_ext32u(s, args[0], args[1]);
+ break;
+
+ case INDEX_op_brcond_i64:
+ tgen_brcond(s, TCG_TYPE_I64, args[2], args[0],
+ args[1], const_args[1], 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_qemu_ld32u:
+ tcg_out_qemu_ld(s, args, LD_UINT32);
+ break;
+ case INDEX_op_qemu_ld32s:
+ tcg_out_qemu_ld(s, args, LD_INT32);
+ break;
+#endif /* TCG_TARGET_REG_BITS == 64 */
+
+ case INDEX_op_jmp:
+ /* This one is obsolete and never emitted. */
+ tcg_abort();
+ break;
+
+ default:
+ fprintf(stderr,"unimplemented opc 0x%x\n",opc);
+ tcg_abort();
+ }
}
-static void tcg_target_init(TCGContext *s)
+static const TCGTargetOpDef s390_op_defs[] = {
+ { INDEX_op_exit_tb, { } },
+ { INDEX_op_goto_tb, { } },
+ { INDEX_op_call, { "ri" } },
+ { INDEX_op_jmp, { "ri" } },
+ { INDEX_op_br, { } },
+
+ { INDEX_op_mov_i32, { "r", "r" } },
+ { INDEX_op_movi_i32, { "r" } },
+
+ { INDEX_op_ld8u_i32, { "r", "r" } },
+ { INDEX_op_ld8s_i32, { "r", "r" } },
+ { INDEX_op_ld16u_i32, { "r", "r" } },
+ { INDEX_op_ld16s_i32, { "r", "r" } },
+ { INDEX_op_ld_i32, { "r", "r" } },
+ { INDEX_op_st8_i32, { "r", "r" } },
+ { INDEX_op_st16_i32, { "r", "r" } },
+ { INDEX_op_st_i32, { "r", "r" } },
+
+ { INDEX_op_add_i32, { "r", "0", "rWI" } },
+ { INDEX_op_sub_i32, { "r", "0", "rWNI" } },
+ { INDEX_op_mul_i32, { "r", "0", "rK" } },
+
+ { INDEX_op_div2_i32, { "b", "a", "0", "1", "r" } },
+ { INDEX_op_divu2_i32, { "b", "a", "0", "1", "r" } },
+
+ { INDEX_op_and_i32, { "r", "0", "rWA" } },
+ { INDEX_op_or_i32, { "r", "0", "rWO" } },
+ { INDEX_op_xor_i32, { "r", "0", "rWX" } },
+
+ { INDEX_op_neg_i32, { "r", "r" } },
+
+ { INDEX_op_shl_i32, { "r", "0", "Ri" } },
+ { INDEX_op_shr_i32, { "r", "0", "Ri" } },
+ { INDEX_op_sar_i32, { "r", "0", "Ri" } },
+
+ { INDEX_op_rotl_i32, { "r", "r", "Ri" } },
+ { INDEX_op_rotr_i32, { "r", "r", "Ri" } },
+
+ { INDEX_op_ext8s_i32, { "r", "r" } },
+ { INDEX_op_ext8u_i32, { "r", "r" } },
+ { INDEX_op_ext16s_i32, { "r", "r" } },
+ { INDEX_op_ext16u_i32, { "r", "r" } },
+
+ { INDEX_op_bswap16_i32, { "r", "r" } },
+ { INDEX_op_bswap32_i32, { "r", "r" } },
+
+ { INDEX_op_brcond_i32, { "r", "rWC" } },
+ { INDEX_op_setcond_i32, { "r", "r", "rWC" } },
+
+ { INDEX_op_qemu_ld8u, { "r", "L" } },
+ { INDEX_op_qemu_ld8s, { "r", "L" } },
+ { INDEX_op_qemu_ld16u, { "r", "L" } },
+ { INDEX_op_qemu_ld16s, { "r", "L" } },
+ { INDEX_op_qemu_ld32, { "r", "L" } },
+ { INDEX_op_qemu_ld64, { "r", "L" } },
+
+ { INDEX_op_qemu_st8, { "L", "L" } },
+ { INDEX_op_qemu_st16, { "L", "L" } },
+ { INDEX_op_qemu_st32, { "L", "L" } },
+ { INDEX_op_qemu_st64, { "L", "L" } },
+
+#if defined(__s390x__)
+ { INDEX_op_mov_i64, { "r", "r" } },
+ { INDEX_op_movi_i64, { "r" } },
+
+ { INDEX_op_ld8u_i64, { "r", "r" } },
+ { INDEX_op_ld8s_i64, { "r", "r" } },
+ { INDEX_op_ld16u_i64, { "r", "r" } },
+ { INDEX_op_ld16s_i64, { "r", "r" } },
+ { INDEX_op_ld32u_i64, { "r", "r" } },
+ { INDEX_op_ld32s_i64, { "r", "r" } },
+ { INDEX_op_ld_i64, { "r", "r" } },
+
+ { INDEX_op_st8_i64, { "r", "r" } },
+ { INDEX_op_st16_i64, { "r", "r" } },
+ { INDEX_op_st32_i64, { "r", "r" } },
+ { INDEX_op_st_i64, { "r", "r" } },
+
+ { INDEX_op_add_i64, { "r", "0", "rI" } },
+ { INDEX_op_sub_i64, { "r", "0", "rNI" } },
+ { INDEX_op_mul_i64, { "r", "0", "rK" } },
+
+ { INDEX_op_div2_i64, { "b", "a", "0", "1", "r" } },
+ { INDEX_op_divu2_i64, { "b", "a", "0", "1", "r" } },
+
+ { INDEX_op_and_i64, { "r", "0", "rA" } },
+ { INDEX_op_or_i64, { "r", "0", "rO" } },
+ { INDEX_op_xor_i64, { "r", "0", "rX" } },
+
+ { INDEX_op_neg_i64, { "r", "r" } },
+
+ { INDEX_op_shl_i64, { "r", "r", "Ri" } },
+ { INDEX_op_shr_i64, { "r", "r", "Ri" } },
+ { INDEX_op_sar_i64, { "r", "r", "Ri" } },
+
+ { INDEX_op_rotl_i64, { "r", "r", "Ri" } },
+ { INDEX_op_rotr_i64, { "r", "r", "Ri" } },
+
+ { INDEX_op_ext8s_i64, { "r", "r" } },
+ { INDEX_op_ext8u_i64, { "r", "r" } },
+ { INDEX_op_ext16s_i64, { "r", "r" } },
+ { INDEX_op_ext16u_i64, { "r", "r" } },
+ { INDEX_op_ext32s_i64, { "r", "r" } },
+ { INDEX_op_ext32u_i64, { "r", "r" } },
+
+ { INDEX_op_bswap16_i64, { "r", "r" } },
+ { INDEX_op_bswap32_i64, { "r", "r" } },
+ { INDEX_op_bswap64_i64, { "r", "r" } },
+
+ { INDEX_op_brcond_i64, { "r", "rC" } },
+ { INDEX_op_setcond_i64, { "r", "r", "rC" } },
+
+ { INDEX_op_qemu_ld32u, { "r", "L" } },
+ { INDEX_op_qemu_ld32s, { "r", "L" } },
+#endif
+
+ { -1 },
+};
+
+/* ??? Linux kernels provide an AUXV entry AT_HWCAP that provides most of
+ this information. However, getting at that entry is not easy this far
+ away from main. Our options are: start searching from environ, but
+ that fails as soon as someone does a setenv in between. Read the data
+ from /proc/self/auxv. Or do the probing ourselves. The only thing
+ extra that AT_HWCAP gives us is HWCAP_S390_HIGH_GPRS, which indicates
+ that the kernel saves all 64-bits of the registers around traps while
+ in 31-bit mode. But this is true of all "recent" kernels (ought to dig
+ back and see from when this might not be true). */
+
+#include <signal.h>
+
+static volatile sig_atomic_t got_sigill;
+
+static void sigill_handler(int sig)
{
- /* gets called with KVM */
+ got_sigill = 1;
}
-static void tcg_target_qemu_prologue(TCGContext *s)
+static void query_facilities(void)
+{
+ struct sigaction sa_old, sa_new;
+ register int r0 __asm__("0");
+ register void *r1 __asm__("1");
+ int fail;
+
+ memset(&sa_new, 0, sizeof(sa_new));
+ sa_new.sa_handler = sigill_handler;
+ sigaction(SIGILL, &sa_new, &sa_old);
+
+ /* First, try STORE FACILITY LIST EXTENDED. If this is present, then
+ we need not do any more probing. Unfortunately, this itself is an
+ extension and the original STORE FACILITY LIST instruction is
+ kernel-only, storing its results at absolute address 200. */
+ /* stfle 0(%r1) */
+ r1 = &facilities;
+ asm volatile(".word 0xb2b0,0x1000"
+ : "=r"(r0) : "0"(0), "r"(r1) : "memory", "cc");
+
+ if (got_sigill) {
+ /* STORE FACILITY EXTENDED is not available. Probe for one of each
+ kind of instruction that we're interested in. */
+ /* ??? Possibly some of these are in practice never present unless
+ the store-facility-extended facility is also present. But since
+ that isn't documented it's just better to probe for each. */
+
+ /* Test for z/Architecture. Required even in 31-bit mode. */
+ got_sigill = 0;
+ /* agr %r0,%r0 */
+ asm volatile(".word 0xb908,0x0000" : "=r"(r0) : : "cc");
+ if (!got_sigill) {
+ facilities |= FACILITY_ZARCH_ACTIVE;
+ }
+
+ /* Test for long displacement. */
+ got_sigill = 0;
+ /* ly %r0,0(%r1) */
+ r1 = &facilities;
+ asm volatile(".word 0xe300,0x1000,0x0058"
+ : "=r"(r0) : "r"(r1) : "cc");
+ if (!got_sigill) {
+ facilities |= FACILITY_LONG_DISP;
+ }
+
+ /* Test for extended immediates. */
+ got_sigill = 0;
+ /* afi %r0,0 */
+ asm volatile(".word 0xc209,0x0000,0x0000" : : : "cc");
+ if (!got_sigill) {
+ facilities |= FACILITY_EXT_IMM;
+ }
+
+ /* Test for general-instructions-extension. */
+ got_sigill = 0;
+ /* msfi %r0,1 */
+ asm volatile(".word 0xc201,0x0000,0x0001");
+ if (!got_sigill) {
+ facilities |= FACILITY_GEN_INST_EXT;
+ }
+ }
+
+ sigaction(SIGILL, &sa_old, NULL);
+
+ /* The translator currently uses these extensions unconditionally.
+ Pruning this back to the base ESA/390 architecture doesn't seem
+ worthwhile, since even the KVM target requires z/Arch. */
+ fail = 0;
+ if ((facilities & FACILITY_ZARCH_ACTIVE) == 0) {
+ fprintf(stderr, "TCG: z/Arch facility is required.\n");
+ fprintf(stderr, "TCG: Boot with a 64-bit enabled kernel.\n");
+ fail = 1;
+ }
+ if ((facilities & FACILITY_LONG_DISP) == 0) {
+ fprintf(stderr, "TCG: long-displacement facility is required.\n");
+ fail = 1;
+ }
+
+ /* So far there's just enough support for 31-bit mode to let the
+ compile succeed. This is good enough to run QEMU with KVM. */
+ if (sizeof(void *) != 8) {
+ fprintf(stderr, "TCG: 31-bit mode is not supported.\n");
+ fail = 1;
+ }
+
+ if (fail) {
+ exit(-1);
+ }
+}
+
+static void tcg_target_init(TCGContext *s)
{
- /* gets called with KVM */
+#if !defined(CONFIG_USER_ONLY)
+ /* fail safe */
+ if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry)) {
+ tcg_abort();
+ }
+#endif
+
+ query_facilities();
+
+ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff);
+ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffff);
+
+ tcg_regset_clear(tcg_target_call_clobber_regs);
+ 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 return register can be considered call-clobbered. */
+ tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R14);
+
+ tcg_regset_clear(s->reserved_regs);
+ 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);
+
+ tcg_add_target_add_op_defs(s390_op_defs);
}
-static inline void tcg_out_mov(TCGContext *s, TCGType type, int ret, int arg)
+static void tcg_target_qemu_prologue(TCGContext *s)
{
- tcg_abort();
+ /* 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,-160 (stack frame) */
+ tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -160);
+
+ if (GUEST_BASE >= 0x80000) {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, GUEST_BASE);
+ tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
+ }
+
+ /* br %r2 (go to TB) */
+ tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R2);
+
+ tb_ret_addr = s->code_ptr;
+
+ /* lmg %r6,%r15,208(%r15) (restore registers) */
+ tcg_out_insn(s, RXY, LMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, 208);
+
+ /* br %r14 (return) */
+ tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R14);
}
static inline void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
diff --git a/tcg/s390/tcg-target.h b/tcg/s390/tcg-target.h
index 8c19262..4e45cf3 100644
--- a/tcg/s390/tcg-target.h
+++ b/tcg/s390/tcg-target.h
@@ -23,10 +23,15 @@
*/
#define TCG_TARGET_S390 1
+#ifdef __s390x__
#define TCG_TARGET_REG_BITS 64
+#else
+#define TCG_TARGET_REG_BITS 32
+#endif
+
#define TCG_TARGET_WORDS_BIGENDIAN
-enum {
+typedef enum TCGReg {
TCG_REG_R0 = 0,
TCG_REG_R1,
TCG_REG_R2,
@@ -43,44 +48,49 @@ enum {
TCG_REG_R13,
TCG_REG_R14,
TCG_REG_R15
-};
+} TCGReg;
+
#define TCG_TARGET_NB_REGS 16
/* optional instructions */
-// #define TCG_TARGET_HAS_div_i32
-// #define TCG_TARGET_HAS_rot_i32
-// #define TCG_TARGET_HAS_ext8s_i32
-// #define TCG_TARGET_HAS_ext16s_i32
-// #define TCG_TARGET_HAS_ext8u_i32
-// #define TCG_TARGET_HAS_ext16u_i32
-// #define TCG_TARGET_HAS_bswap16_i32
-// #define TCG_TARGET_HAS_bswap32_i32
+#define TCG_TARGET_HAS_div2_i32
+#define TCG_TARGET_HAS_rot_i32
+#define TCG_TARGET_HAS_ext8s_i32
+#define TCG_TARGET_HAS_ext16s_i32
+#define TCG_TARGET_HAS_ext8u_i32
+#define TCG_TARGET_HAS_ext16u_i32
+#define TCG_TARGET_HAS_bswap16_i32
+#define TCG_TARGET_HAS_bswap32_i32
// #define TCG_TARGET_HAS_not_i32
-// #define TCG_TARGET_HAS_neg_i32
+#define TCG_TARGET_HAS_neg_i32
// #define TCG_TARGET_HAS_andc_i32
// #define TCG_TARGET_HAS_orc_i32
// #define TCG_TARGET_HAS_eqv_i32
// #define TCG_TARGET_HAS_nand_i32
// #define TCG_TARGET_HAS_nor_i32
-// #define TCG_TARGET_HAS_div_i64
-// #define TCG_TARGET_HAS_rot_i64
-// #define TCG_TARGET_HAS_ext8s_i64
-// #define TCG_TARGET_HAS_ext16s_i64
-// #define TCG_TARGET_HAS_ext32s_i64
-// #define TCG_TARGET_HAS_ext8u_i64
-// #define TCG_TARGET_HAS_ext16u_i64
-// #define TCG_TARGET_HAS_ext32u_i64
-// #define TCG_TARGET_HAS_bswap16_i64
-// #define TCG_TARGET_HAS_bswap32_i64
-// #define TCG_TARGET_HAS_bswap64_i64
+#if TCG_TARGET_REG_BITS == 64
+#define TCG_TARGET_HAS_div2_i64
+#define TCG_TARGET_HAS_rot_i64
+#define TCG_TARGET_HAS_ext8s_i64
+#define TCG_TARGET_HAS_ext16s_i64
+#define TCG_TARGET_HAS_ext32s_i64
+#define TCG_TARGET_HAS_ext8u_i64
+#define TCG_TARGET_HAS_ext16u_i64
+#define TCG_TARGET_HAS_ext32u_i64
+#define TCG_TARGET_HAS_bswap16_i64
+#define TCG_TARGET_HAS_bswap32_i64
+#define TCG_TARGET_HAS_bswap64_i64
// #define TCG_TARGET_HAS_not_i64
-// #define TCG_TARGET_HAS_neg_i64
+#define TCG_TARGET_HAS_neg_i64
// #define TCG_TARGET_HAS_andc_i64
// #define TCG_TARGET_HAS_orc_i64
// #define TCG_TARGET_HAS_eqv_i64
// #define TCG_TARGET_HAS_nand_i64
// #define TCG_TARGET_HAS_nor_i64
+#endif
+
+#define TCG_TARGET_HAS_GUEST_BASE
/* used for function call generation */
#define TCG_REG_CALL_STACK TCG_REG_R15
--
1.5.6.5