--- /dev/null
+/*
+ * Tiny Code Generator for QEMU
+ *
+ * Copyright (c) 2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "tcg-be-ldst.h"
+
+#if defined _CALL_DARWIN || defined __APPLE__
+#define TCG_TARGET_CALL_DARWIN
+#endif
+#ifdef _CALL_SYSV
+# define TCG_TARGET_CALL_ALIGN_ARGS 1
+#endif
+
+/* For some memory operations, we need a scratch that isn't R0. For the AIX
+ calling convention, we can re-use the TOC register since we'll be reloading
+ it at every call. Otherwise R12 will do nicely as neither a call-saved
+ register nor a parameter register. */
+#ifdef _CALL_AIX
+# define TCG_REG_TMP1 TCG_REG_R2
+#else
+# define TCG_REG_TMP1 TCG_REG_R12
+#endif
+
+/* For the 64-bit target, we don't like the 5 insn sequence needed to build
+ full 64-bit addresses. Better to have a base register to which we can
+ apply a 32-bit displacement.
+
+ There are generally three items of interest:
+ (1) helper functions in the main executable,
+ (2) TranslationBlock data structures,
+ (3) the return address in the epilogue.
+
+ For user-only, we USE_STATIC_CODE_GEN_BUFFER, so the code_gen_buffer
+ will be inside the main executable, and thus near enough to make a
+ pointer to the epilogue be within 2GB of all helper functions.
+
+ For softmmu, we'll let the kernel choose the address of code_gen_buffer,
+ and odds are it'll be somewhere close to the main malloc arena, and so
+ a pointer to the epilogue will be within 2GB of the TranslationBlocks.
+
+ For --enable-pie, everything will be kinda near everything else,
+ somewhere in high memory.
+
+ Thus we choose to keep the return address in a call-saved register. */
+#define TCG_REG_RA TCG_REG_R31
+#define USE_REG_RA (TCG_TARGET_REG_BITS == 64)
+
+/* Shorthand for size of a pointer. Avoid promotion to unsigned. */
+#define SZP ((int)sizeof(void *))
+
+/* Shorthand for size of a register. */
+#define SZR (TCG_TARGET_REG_BITS / 8)
+
+#define TCG_CT_CONST_S16 0x100
+#define TCG_CT_CONST_U16 0x200
+#define TCG_CT_CONST_S32 0x400
+#define TCG_CT_CONST_U32 0x800
+#define TCG_CT_CONST_ZERO 0x1000
+#define TCG_CT_CONST_MONE 0x2000
+
+static tcg_insn_unit *tb_ret_addr;
+
+#ifndef GUEST_BASE
+#define GUEST_BASE 0
+#endif
+
+#include "elf.h"
+static bool have_isa_2_06;
+#define HAVE_ISA_2_06 have_isa_2_06
+#define HAVE_ISEL have_isa_2_06
+
+#ifdef CONFIG_USE_GUEST_BASE
+#define TCG_GUEST_BASE_REG 30
+#else
+#define TCG_GUEST_BASE_REG 0
+#endif
+
+#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",
+ "r16",
+ "r17",
+ "r18",
+ "r19",
+ "r20",
+ "r21",
+ "r22",
+ "r23",
+ "r24",
+ "r25",
+ "r26",
+ "r27",
+ "r28",
+ "r29",
+ "r30",
+ "r31"
+};
+#endif
+
+static const int tcg_target_reg_alloc_order[] = {
+ TCG_REG_R14, /* call saved registers */
+ TCG_REG_R15,
+ TCG_REG_R16,
+ TCG_REG_R17,
+ TCG_REG_R18,
+ TCG_REG_R19,
+ TCG_REG_R20,
+ TCG_REG_R21,
+ TCG_REG_R22,
+ TCG_REG_R23,
+ TCG_REG_R24,
+ TCG_REG_R25,
+ TCG_REG_R26,
+ TCG_REG_R27,
+ TCG_REG_R28,
+ TCG_REG_R29,
+ TCG_REG_R30,
+ TCG_REG_R31,
+ TCG_REG_R12, /* call clobbered, non-arguments */
+ TCG_REG_R11,
+ TCG_REG_R2,
+ TCG_REG_R13,
+ TCG_REG_R10, /* call clobbered, arguments */
+ TCG_REG_R9,
+ TCG_REG_R8,
+ TCG_REG_R7,
+ TCG_REG_R6,
+ TCG_REG_R5,
+ TCG_REG_R4,
+ TCG_REG_R3,
+};
+
+static const int tcg_target_call_iarg_regs[] = {
+ TCG_REG_R3,
+ TCG_REG_R4,
+ TCG_REG_R5,
+ TCG_REG_R6,
+ TCG_REG_R7,
+ TCG_REG_R8,
+ TCG_REG_R9,
+ TCG_REG_R10
+};
+
+static const int tcg_target_call_oarg_regs[] = {
+ TCG_REG_R3,
+ TCG_REG_R4
+};
+
+static const int tcg_target_callee_save_regs[] = {
+#ifdef TCG_TARGET_CALL_DARWIN
+ TCG_REG_R11,
+#endif
+ TCG_REG_R14,
+ TCG_REG_R15,
+ TCG_REG_R16,
+ TCG_REG_R17,
+ TCG_REG_R18,
+ TCG_REG_R19,
+ TCG_REG_R20,
+ TCG_REG_R21,
+ TCG_REG_R22,
+ TCG_REG_R23,
+ TCG_REG_R24,
+ TCG_REG_R25,
+ TCG_REG_R26,
+ TCG_REG_R27, /* currently used for the global env */
+ TCG_REG_R28,
+ TCG_REG_R29,
+ TCG_REG_R30,
+ TCG_REG_R31
+};
+
+static inline bool in_range_b(tcg_target_long target)
+{
+ return target == sextract64(target, 0, 26);
+}
+
+static uint32_t reloc_pc24_val(tcg_insn_unit *pc, tcg_insn_unit *target)
+{
+ ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
+ assert(in_range_b(disp));
+ return disp & 0x3fffffc;
+}
+
+static void reloc_pc24(tcg_insn_unit *pc, tcg_insn_unit *target)
+{
+ *pc = (*pc & ~0x3fffffc) | reloc_pc24_val(pc, target);
+}
+
+static uint16_t reloc_pc14_val(tcg_insn_unit *pc, tcg_insn_unit *target)
+{
+ ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
+ assert(disp == (int16_t) disp);
+ return disp & 0xfffc;
+}
+
+static void reloc_pc14(tcg_insn_unit *pc, tcg_insn_unit *target)
+{
+ *pc = (*pc & ~0xfffc) | reloc_pc14_val(pc, target);
+}
+
+static inline void tcg_out_b_noaddr(TCGContext *s, int insn)
+{
+ unsigned retrans = *s->code_ptr & 0x3fffffc;
+ tcg_out32(s, insn | retrans);
+}
+
+static inline void tcg_out_bc_noaddr(TCGContext *s, int insn)
+{
+ unsigned retrans = *s->code_ptr & 0xfffc;
+ tcg_out32(s, insn | retrans);
+}
+
+static void patch_reloc(tcg_insn_unit *code_ptr, int type,
+ intptr_t value, intptr_t addend)
+{
+ tcg_insn_unit *target = (tcg_insn_unit *)value;
+
+ assert(addend == 0);
+ switch (type) {
+ case R_PPC_REL14:
+ reloc_pc14(code_ptr, target);
+ break;
+ case R_PPC_REL24:
+ reloc_pc24(code_ptr, target);
+ break;
+ default:
+ tcg_abort();
+ }
+}
+
+/* parse target specific constraints */
+static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
+{
+ const char *ct_str;
+
+ ct_str = *pct_str;
+ switch (ct_str[0]) {
+ case 'A': case 'B': case 'C': case 'D':
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set_reg(ct->u.regs, 3 + ct_str[0] - 'A');
+ break;
+ case 'r':
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
+ break;
+ case 'L': /* qemu_ld constraint */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3);
+#ifdef CONFIG_SOFTMMU
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R5);
+#endif
+ break;
+ case 'S': /* qemu_st constraint */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3);
+#ifdef CONFIG_SOFTMMU
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R5);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_R6);
+#endif
+ break;
+ case 'I':
+ ct->ct |= TCG_CT_CONST_S16;
+ break;
+ case 'J':
+ ct->ct |= TCG_CT_CONST_U16;
+ break;
+ case 'M':
+ ct->ct |= TCG_CT_CONST_MONE;
+ break;
+ case 'T':
+ ct->ct |= TCG_CT_CONST_S32;
+ break;
+ case 'U':
+ ct->ct |= TCG_CT_CONST_U32;
+ break;
+ case 'Z':
+ ct->ct |= TCG_CT_CONST_ZERO;
+ break;
+ default:
+ return -1;
+ }
+ ct_str++;
+ *pct_str = ct_str;
+ return 0;
+}
+
+/* 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;
+ }
+
+ /* The only 32-bit constraint we use aside from
+ TCG_CT_CONST is TCG_CT_CONST_S16. */
+ if (type == TCG_TYPE_I32) {
+ val = (int32_t)val;
+ }
+
+ if ((ct & TCG_CT_CONST_S16) && val == (int16_t)val) {
+ return 1;
+ } else if ((ct & TCG_CT_CONST_U16) && val == (uint16_t)val) {
+ return 1;
+ } else if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) {
+ return 1;
+ } else if ((ct & TCG_CT_CONST_U32) && val == (uint32_t)val) {
+ return 1;
+ } else if ((ct & TCG_CT_CONST_ZERO) && val == 0) {
+ return 1;
+ } else if ((ct & TCG_CT_CONST_MONE) && val == -1) {
+ return 1;
+ }
+ return 0;
+}
+
+#define OPCD(opc) ((opc)<<26)
+#define XO19(opc) (OPCD(19)|((opc)<<1))
+#define MD30(opc) (OPCD(30)|((opc)<<2))
+#define MDS30(opc) (OPCD(30)|((opc)<<1))
+#define XO31(opc) (OPCD(31)|((opc)<<1))
+#define XO58(opc) (OPCD(58)|(opc))
+#define XO62(opc) (OPCD(62)|(opc))
+
+#define B OPCD( 18)
+#define BC OPCD( 16)
+#define LBZ OPCD( 34)
+#define LHZ OPCD( 40)
+#define LHA OPCD( 42)
+#define LWZ OPCD( 32)
+#define STB OPCD( 38)
+#define STH OPCD( 44)
+#define STW OPCD( 36)
+
+#define STD XO62( 0)
+#define STDU XO62( 1)
+#define STDX XO31(149)
+
+#define LD XO58( 0)
+#define LDX XO31( 21)
+#define LDU XO58( 1)
+#define LWA XO58( 2)
+#define LWAX XO31(341)
+
+#define ADDIC OPCD( 12)
+#define ADDI OPCD( 14)
+#define ADDIS OPCD( 15)
+#define ORI OPCD( 24)
+#define ORIS OPCD( 25)
+#define XORI OPCD( 26)
+#define XORIS OPCD( 27)
+#define ANDI OPCD( 28)
+#define ANDIS OPCD( 29)
+#define MULLI OPCD( 7)
+#define CMPLI OPCD( 10)
+#define CMPI OPCD( 11)
+#define SUBFIC OPCD( 8)
+
+#define LWZU OPCD( 33)
+#define STWU OPCD( 37)
+
+#define RLWIMI OPCD( 20)
+#define RLWINM OPCD( 21)
+#define RLWNM OPCD( 23)
+
+#define RLDICL MD30( 0)
+#define RLDICR MD30( 1)
+#define RLDIMI MD30( 3)
+#define RLDCL MDS30( 8)
+
+#define BCLR XO19( 16)
+#define BCCTR XO19(528)
+#define CRAND XO19(257)
+#define CRANDC XO19(129)
+#define CRNAND XO19(225)
+#define CROR XO19(449)
+#define CRNOR XO19( 33)
+
+#define EXTSB XO31(954)
+#define EXTSH XO31(922)
+#define EXTSW XO31(986)
+#define ADD XO31(266)
+#define ADDE XO31(138)
+#define ADDME XO31(234)
+#define ADDZE XO31(202)
+#define ADDC XO31( 10)
+#define AND XO31( 28)
+#define SUBF XO31( 40)
+#define SUBFC XO31( 8)
+#define SUBFE XO31(136)
+#define SUBFME XO31(232)
+#define SUBFZE XO31(200)
+#define OR XO31(444)
+#define XOR XO31(316)
+#define MULLW XO31(235)
+#define MULHW XO31( 75)
+#define MULHWU XO31( 11)
+#define DIVW XO31(491)
+#define DIVWU XO31(459)
+#define CMP XO31( 0)
+#define CMPL XO31( 32)
+#define LHBRX XO31(790)
+#define LWBRX XO31(534)
+#define LDBRX XO31(532)
+#define STHBRX XO31(918)
+#define STWBRX XO31(662)
+#define STDBRX XO31(660)
+#define MFSPR XO31(339)
+#define MTSPR XO31(467)
+#define SRAWI XO31(824)
+#define NEG XO31(104)
+#define MFCR XO31( 19)
+#define MFOCRF (MFCR | (1u << 20))
+#define NOR XO31(124)
+#define CNTLZW XO31( 26)
+#define CNTLZD XO31( 58)
+#define ANDC XO31( 60)
+#define ORC XO31(412)
+#define EQV XO31(284)
+#define NAND XO31(476)
+#define ISEL XO31( 15)
+
+#define MULLD XO31(233)
+#define MULHD XO31( 73)
+#define MULHDU XO31( 9)
+#define DIVD XO31(489)
+#define DIVDU XO31(457)
+
+#define LBZX XO31( 87)
+#define LHZX XO31(279)
+#define LHAX XO31(343)
+#define LWZX XO31( 23)
+#define STBX XO31(215)
+#define STHX XO31(407)
+#define STWX XO31(151)
+
+#define SPR(a, b) ((((a)<<5)|(b))<<11)
+#define LR SPR(8, 0)
+#define CTR SPR(9, 0)
+
+#define SLW XO31( 24)
+#define SRW XO31(536)
+#define SRAW XO31(792)
+
+#define SLD XO31( 27)
+#define SRD XO31(539)
+#define SRAD XO31(794)
+#define SRADI XO31(413<<1)
+
+#define TW XO31( 4)
+#define TRAP (TW | TO(31))
+
+#define NOP ORI /* ori 0,0,0 */
+
+#define RT(r) ((r)<<21)
+#define RS(r) ((r)<<21)
+#define RA(r) ((r)<<16)
+#define RB(r) ((r)<<11)
+#define TO(t) ((t)<<21)
+#define SH(s) ((s)<<11)
+#define MB(b) ((b)<<6)
+#define ME(e) ((e)<<1)
+#define BO(o) ((o)<<21)
+#define MB64(b) ((b)<<5)
+#define FXM(b) (1 << (19 - (b)))
+
+#define LK 1
+
+#define TAB(t, a, b) (RT(t) | RA(a) | RB(b))
+#define SAB(s, a, b) (RS(s) | RA(a) | RB(b))
+#define TAI(s, a, i) (RT(s) | RA(a) | ((i) & 0xffff))
+#define SAI(s, a, i) (RS(s) | RA(a) | ((i) & 0xffff))
+
+#define BF(n) ((n)<<23)
+#define BI(n, c) (((c)+((n)*4))<<16)
+#define BT(n, c) (((c)+((n)*4))<<21)
+#define BA(n, c) (((c)+((n)*4))<<16)
+#define BB(n, c) (((c)+((n)*4))<<11)
+#define BC_(n, c) (((c)+((n)*4))<<6)
+
+#define BO_COND_TRUE BO(12)
+#define BO_COND_FALSE BO( 4)
+#define BO_ALWAYS BO(20)
+
+enum {
+ CR_LT,
+ CR_GT,
+ CR_EQ,
+ CR_SO
+};
+
+static const uint32_t tcg_to_bc[] = {
+ [TCG_COND_EQ] = BC | BI(7, CR_EQ) | BO_COND_TRUE,
+ [TCG_COND_NE] = BC | BI(7, CR_EQ) | BO_COND_FALSE,
+ [TCG_COND_LT] = BC | BI(7, CR_LT) | BO_COND_TRUE,
+ [TCG_COND_GE] = BC | BI(7, CR_LT) | BO_COND_FALSE,
+ [TCG_COND_LE] = BC | BI(7, CR_GT) | BO_COND_FALSE,
+ [TCG_COND_GT] = BC | BI(7, CR_GT) | BO_COND_TRUE,
+ [TCG_COND_LTU] = BC | BI(7, CR_LT) | BO_COND_TRUE,
+ [TCG_COND_GEU] = BC | BI(7, CR_LT) | BO_COND_FALSE,
+ [TCG_COND_LEU] = BC | BI(7, CR_GT) | BO_COND_FALSE,
+ [TCG_COND_GTU] = BC | BI(7, CR_GT) | BO_COND_TRUE,
+};
+
+/* The low bit here is set if the RA and RB fields must be inverted. */
+static const uint32_t tcg_to_isel[] = {
+ [TCG_COND_EQ] = ISEL | BC_(7, CR_EQ),
+ [TCG_COND_NE] = ISEL | BC_(7, CR_EQ) | 1,
+ [TCG_COND_LT] = ISEL | BC_(7, CR_LT),
+ [TCG_COND_GE] = ISEL | BC_(7, CR_LT) | 1,
+ [TCG_COND_LE] = ISEL | BC_(7, CR_GT) | 1,
+ [TCG_COND_GT] = ISEL | BC_(7, CR_GT),
+ [TCG_COND_LTU] = ISEL | BC_(7, CR_LT),
+ [TCG_COND_GEU] = ISEL | BC_(7, CR_LT) | 1,
+ [TCG_COND_LEU] = ISEL | BC_(7, CR_GT) | 1,
+ [TCG_COND_GTU] = ISEL | BC_(7, CR_GT),
+};
+
+static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
+ TCGReg base, tcg_target_long offset);
+
+static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
+{
+ tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
+ if (ret != arg) {
+ tcg_out32(s, OR | SAB(arg, ret, arg));
+ }
+}
+
+static inline void tcg_out_rld(TCGContext *s, int op, TCGReg ra, TCGReg rs,
+ int sh, int mb)
+{
+ assert(TCG_TARGET_REG_BITS == 64);
+ sh = SH(sh & 0x1f) | (((sh >> 5) & 1) << 1);
+ mb = MB64((mb >> 5) | ((mb << 1) & 0x3f));
+ tcg_out32(s, op | RA(ra) | RS(rs) | sh | mb);
+}
+
+static inline void tcg_out_rlw(TCGContext *s, int op, TCGReg ra, TCGReg rs,
+ int sh, int mb, int me)
+{
+ tcg_out32(s, op | RA(ra) | RS(rs) | SH(sh) | MB(mb) | ME(me));
+}
+
+static inline void tcg_out_ext32u(TCGContext *s, TCGReg dst, TCGReg src)
+{
+ tcg_out_rld(s, RLDICL, dst, src, 0, 32);
+}
+
+static inline void tcg_out_shli32(TCGContext *s, TCGReg dst, TCGReg src, int c)
+{
+ tcg_out_rlw(s, RLWINM, dst, src, c, 0, 31 - c);
+}
+
+static inline void tcg_out_shli64(TCGContext *s, TCGReg dst, TCGReg src, int c)
+{
+ tcg_out_rld(s, RLDICR, dst, src, c, 63 - c);
+}
+
+static inline void tcg_out_shri32(TCGContext *s, TCGReg dst, TCGReg src, int c)
+{
+ tcg_out_rlw(s, RLWINM, dst, src, 32 - c, c, 31);
+}
+
+static inline void tcg_out_shri64(TCGContext *s, TCGReg dst, TCGReg src, int c)
+{
+ tcg_out_rld(s, RLDICL, dst, src, 64 - c, c);
+}
+
+static void tcg_out_movi32(TCGContext *s, TCGReg ret, int32_t arg)
+{
+ if (arg == (int16_t) arg) {
+ tcg_out32(s, ADDI | TAI(ret, 0, arg));
+ } else {
+ tcg_out32(s, ADDIS | TAI(ret, 0, arg >> 16));
+ if (arg & 0xffff) {
+ tcg_out32(s, ORI | SAI(ret, ret, arg));
+ }
+ }
+}
+
+static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret,
+ tcg_target_long arg)
+{
+ tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
+ if (type == TCG_TYPE_I32 || arg == (int32_t)arg) {
+ tcg_out_movi32(s, ret, arg);
+ } else if (arg == (uint32_t)arg && !(arg & 0x8000)) {
+ tcg_out32(s, ADDI | TAI(ret, 0, arg));
+ tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16));
+ } else {
+ int32_t high;
+
+ if (USE_REG_RA) {
+ intptr_t diff = arg - (intptr_t)tb_ret_addr;
+ if (diff == (int32_t)diff) {
+ tcg_out_mem_long(s, ADDI, ADD, ret, TCG_REG_RA, diff);
+ return;
+ }
+ }
+
+ high = arg >> 31 >> 1;
+ tcg_out_movi32(s, ret, high);
+ if (high) {
+ tcg_out_shli64(s, ret, ret, 32);
+ }
+ if (arg & 0xffff0000) {
+ tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16));
+ }
+ if (arg & 0xffff) {
+ tcg_out32(s, ORI | SAI(ret, ret, arg));
+ }
+ }
+}
+
+static bool mask_operand(uint32_t c, int *mb, int *me)
+{
+ uint32_t lsb, test;
+
+ /* Accept a bit pattern like:
+ 0....01....1
+ 1....10....0
+ 0..01..10..0
+ Keep track of the transitions. */
+ if (c == 0 || c == -1) {
+ return false;
+ }
+ test = c;
+ lsb = test & -test;
+ test += lsb;
+ if (test & (test - 1)) {
+ return false;
+ }
+
+ *me = clz32(lsb);
+ *mb = test ? clz32(test & -test) + 1 : 0;
+ return true;
+}
+
+static bool mask64_operand(uint64_t c, int *mb, int *me)
+{
+ uint64_t lsb;
+
+ if (c == 0) {
+ return false;
+ }
+
+ lsb = c & -c;
+ /* Accept 1..10..0. */
+ if (c == -lsb) {
+ *mb = 0;
+ *me = clz64(lsb);
+ return true;
+ }
+ /* Accept 0..01..1. */
+ if (lsb == 1 && (c & (c + 1)) == 0) {
+ *mb = clz64(c + 1) + 1;
+ *me = 63;
+ return true;
+ }
+ return false;
+}
+
+static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
+{
+ int mb, me;
+
+ if ((c & 0xffff) == c) {
+ tcg_out32(s, ANDI | SAI(src, dst, c));
+ return;
+ } else if ((c & 0xffff0000) == c) {
+ tcg_out32(s, ANDIS | SAI(src, dst, c >> 16));
+ return;
+ } else if (mask_operand(c, &mb, &me)) {
+ tcg_out_rlw(s, RLWINM, dst, src, 0, mb, me);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R0, c);
+ tcg_out32(s, AND | SAB(src, dst, TCG_REG_R0));
+ }
+}
+
+static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c)
+{
+ int mb, me;
+
+ assert(TCG_TARGET_REG_BITS == 64);
+ if ((c & 0xffff) == c) {
+ tcg_out32(s, ANDI | SAI(src, dst, c));
+ return;
+ } else if ((c & 0xffff0000) == c) {
+ tcg_out32(s, ANDIS | SAI(src, dst, c >> 16));
+ return;
+ } else if (mask64_operand(c, &mb, &me)) {
+ if (mb == 0) {
+ tcg_out_rld(s, RLDICR, dst, src, 0, me);
+ } else {
+ tcg_out_rld(s, RLDICL, dst, src, 0, mb);
+ }
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, c);
+ tcg_out32(s, AND | SAB(src, dst, TCG_REG_R0));
+ }
+}
+
+static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c,
+ int op_lo, int op_hi)
+{
+ if (c >> 16) {
+ tcg_out32(s, op_hi | SAI(src, dst, c >> 16));
+ src = dst;
+ }
+ if (c & 0xffff) {
+ tcg_out32(s, op_lo | SAI(src, dst, c));
+ src = dst;
+ }
+}
+
+static void tcg_out_ori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
+{
+ tcg_out_zori32(s, dst, src, c, ORI, ORIS);
+}
+
+static void tcg_out_xori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
+{
+ tcg_out_zori32(s, dst, src, c, XORI, XORIS);
+}
+
+static void tcg_out_b(TCGContext *s, int mask, tcg_insn_unit *target)
+{
+ ptrdiff_t disp = tcg_pcrel_diff(s, target);
+ if (in_range_b(disp)) {
+ tcg_out32(s, B | (disp & 0x3fffffc) | mask);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, (uintptr_t)target);
+ tcg_out32(s, MTSPR | RS(TCG_REG_R0) | CTR);
+ tcg_out32(s, BCCTR | BO_ALWAYS | mask);
+ }
+}
+
+static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
+ TCGReg base, tcg_target_long offset)
+{
+ tcg_target_long orig = offset, l0, l1, extra = 0, align = 0;
+ bool is_store = false;
+ TCGReg rs = TCG_REG_TMP1;
+
+ switch (opi) {
+ case LD: case LWA:
+ align = 3;
+ /* FALLTHRU */
+ default:
+ if (rt != TCG_REG_R0) {
+ rs = rt;
+ break;
+ }
+ break;
+ case STD:
+ align = 3;
+ /* FALLTHRU */
+ case STB: case STH: case STW:
+ is_store = true;
+ break;
+ }
+
+ /* For unaligned, or very large offsets, use the indexed form. */
+ if (offset & align || offset != (int32_t)offset) {
+ if (rs == base) {
+ rs = TCG_REG_R0;
+ }
+ tcg_debug_assert(!is_store || rs != rt);
+ tcg_out_movi(s, TCG_TYPE_PTR, rs, orig);
+ tcg_out32(s, opx | TAB(rt, base, rs));
+ return;
+ }
+
+ l0 = (int16_t)offset;
+ offset = (offset - l0) >> 16;
+ l1 = (int16_t)offset;
+
+ if (l1 < 0 && orig >= 0) {
+ extra = 0x4000;
+ l1 = (int16_t)(offset - 0x4000);
+ }
+ if (l1) {
+ tcg_out32(s, ADDIS | TAI(rs, base, l1));
+ base = rs;
+ }
+ if (extra) {
+ tcg_out32(s, ADDIS | TAI(rs, base, extra));
+ base = rs;
+ }
+ if (opi != ADDI || base != rt || l0 != 0) {
+ tcg_out32(s, opi | TAI(rt, base, l0));
+ }
+}
+
+static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
+ TCGReg arg1, intptr_t arg2)
+{
+ int opi, opx;
+
+ assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
+ if (type == TCG_TYPE_I32) {
+ opi = LWZ, opx = LWZX;
+ } else {
+ opi = LD, opx = LDX;
+ }
+ tcg_out_mem_long(s, opi, opx, ret, arg1, arg2);
+}
+
+static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
+ TCGReg arg1, intptr_t arg2)
+{
+ int opi, opx;
+
+ assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
+ if (type == TCG_TYPE_I32) {
+ opi = STW, opx = STWX;
+ } else {
+ opi = STD, opx = STDX;
+ }
+ tcg_out_mem_long(s, opi, opx, arg, arg1, arg2);
+}
+
+static void tcg_out_cmp(TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
+ int const_arg2, int cr, TCGType type)
+{
+ int imm;
+ uint32_t op;
+
+ tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
+
+ /* Simplify the comparisons below wrt CMPI. */
+ if (type == TCG_TYPE_I32) {
+ arg2 = (int32_t)arg2;
+ }
+
+ switch (cond) {
+ case TCG_COND_EQ:
+ case TCG_COND_NE:
+ if (const_arg2) {
+ if ((int16_t) arg2 == arg2) {
+ op = CMPI;
+ imm = 1;
+ break;
+ } else if ((uint16_t) arg2 == arg2) {
+ op = CMPLI;
+ imm = 1;
+ break;
+ }
+ }
+ op = CMPL;
+ imm = 0;
+ break;
+
+ case TCG_COND_LT:
+ case TCG_COND_GE:
+ case TCG_COND_LE:
+ case TCG_COND_GT:
+ if (const_arg2) {
+ if ((int16_t) arg2 == arg2) {
+ op = CMPI;
+ imm = 1;
+ break;
+ }
+ }
+ op = CMP;
+ imm = 0;
+ break;
+
+ case TCG_COND_LTU:
+ case TCG_COND_GEU:
+ case TCG_COND_LEU:
+ case TCG_COND_GTU:
+ if (const_arg2) {
+ if ((uint16_t) arg2 == arg2) {
+ op = CMPLI;
+ imm = 1;
+ break;
+ }
+ }
+ op = CMPL;
+ imm = 0;
+ break;
+
+ default:
+ tcg_abort();
+ }
+ op |= BF(cr) | ((type == TCG_TYPE_I64) << 21);
+
+ if (imm) {
+ tcg_out32(s, op | RA(arg1) | (arg2 & 0xffff));
+ } else {
+ if (const_arg2) {
+ tcg_out_movi(s, type, TCG_REG_R0, arg2);
+ arg2 = TCG_REG_R0;
+ }
+ tcg_out32(s, op | RA(arg1) | RB(arg2));
+ }
+}
+
+static void tcg_out_setcond_eq0(TCGContext *s, TCGType type,
+ TCGReg dst, TCGReg src)
+{
+ if (type == TCG_TYPE_I32) {
+ tcg_out32(s, CNTLZW | RS(src) | RA(dst));
+ tcg_out_shri32(s, dst, dst, 5);
+ } else {
+ tcg_out32(s, CNTLZD | RS(src) | RA(dst));
+ tcg_out_shri64(s, dst, dst, 6);
+ }
+}
+
+static void tcg_out_setcond_ne0(TCGContext *s, TCGReg dst, TCGReg src)
+{
+ /* X != 0 implies X + -1 generates a carry. Extra addition
+ trickery means: R = X-1 + ~X + C = X-1 + (-X+1) + C = C. */
+ if (dst != src) {
+ tcg_out32(s, ADDIC | TAI(dst, src, -1));
+ tcg_out32(s, SUBFE | TAB(dst, dst, src));
+ } else {
+ tcg_out32(s, ADDIC | TAI(TCG_REG_R0, src, -1));
+ tcg_out32(s, SUBFE | TAB(dst, TCG_REG_R0, src));
+ }
+}
+
+static TCGReg tcg_gen_setcond_xor(TCGContext *s, TCGReg arg1, TCGArg arg2,
+ bool const_arg2)
+{
+ if (const_arg2) {
+ if ((uint32_t)arg2 == arg2) {
+ tcg_out_xori32(s, TCG_REG_R0, arg1, arg2);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, arg2);
+ tcg_out32(s, XOR | SAB(arg1, TCG_REG_R0, TCG_REG_R0));
+ }
+ } else {
+ tcg_out32(s, XOR | SAB(arg1, TCG_REG_R0, arg2));
+ }
+ return TCG_REG_R0;
+}
+
+static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
+ TCGArg arg0, TCGArg arg1, TCGArg arg2,
+ int const_arg2)
+{
+ int crop, sh;
+
+ assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
+
+ /* Ignore high bits of a potential constant arg2. */
+ if (type == TCG_TYPE_I32) {
+ arg2 = (uint32_t)arg2;
+ }
+
+ /* Handle common and trivial cases before handling anything else. */
+ if (arg2 == 0) {
+ switch (cond) {
+ case TCG_COND_EQ:
+ tcg_out_setcond_eq0(s, type, arg0, arg1);
+ return;
+ case TCG_COND_NE:
+ if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
+ tcg_out_ext32u(s, TCG_REG_R0, arg1);
+ arg1 = TCG_REG_R0;
+ }
+ tcg_out_setcond_ne0(s, arg0, arg1);
+ return;
+ case TCG_COND_GE:
+ tcg_out32(s, NOR | SAB(arg1, arg0, arg1));
+ arg1 = arg0;
+ /* FALLTHRU */
+ case TCG_COND_LT:
+ /* Extract the sign bit. */
+ if (type == TCG_TYPE_I32) {
+ tcg_out_shri32(s, arg0, arg1, 31);
+ } else {
+ tcg_out_shri64(s, arg0, arg1, 63);
+ }
+ return;
+ default:
+ break;
+ }
+ }
+
+ /* If we have ISEL, we can implement everything with 3 or 4 insns.
+ All other cases below are also at least 3 insns, so speed up the
+ code generator by not considering them and always using ISEL. */
+ if (HAVE_ISEL) {
+ int isel, tab;
+
+ tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
+
+ isel = tcg_to_isel[cond];
+
+ tcg_out_movi(s, type, arg0, 1);
+ if (isel & 1) {
+ /* arg0 = (bc ? 0 : 1) */
+ tab = TAB(arg0, 0, arg0);
+ isel &= ~1;
+ } else {
+ /* arg0 = (bc ? 1 : 0) */
+ tcg_out_movi(s, type, TCG_REG_R0, 0);
+ tab = TAB(arg0, arg0, TCG_REG_R0);
+ }
+ tcg_out32(s, isel | tab);
+ return;
+ }
+
+ switch (cond) {
+ case TCG_COND_EQ:
+ arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2);
+ tcg_out_setcond_eq0(s, type, arg0, arg1);
+ return;
+
+ case TCG_COND_NE:
+ arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2);
+ /* Discard the high bits only once, rather than both inputs. */
+ if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
+ tcg_out_ext32u(s, TCG_REG_R0, arg1);
+ arg1 = TCG_REG_R0;
+ }
+ tcg_out_setcond_ne0(s, arg0, arg1);
+ return;
+
+ case TCG_COND_GT:
+ case TCG_COND_GTU:
+ sh = 30;
+ crop = 0;
+ goto crtest;
+
+ case TCG_COND_LT:
+ case TCG_COND_LTU:
+ sh = 29;
+ crop = 0;
+ goto crtest;
+
+ case TCG_COND_GE:
+ case TCG_COND_GEU:
+ sh = 31;
+ crop = CRNOR | BT(7, CR_EQ) | BA(7, CR_LT) | BB(7, CR_LT);
+ goto crtest;
+
+ case TCG_COND_LE:
+ case TCG_COND_LEU:
+ sh = 31;
+ crop = CRNOR | BT(7, CR_EQ) | BA(7, CR_GT) | BB(7, CR_GT);
+ crtest:
+ tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
+ if (crop) {
+ tcg_out32(s, crop);
+ }
+ tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7));
+ tcg_out_rlw(s, RLWINM, arg0, TCG_REG_R0, sh, 31, 31);
+ break;
+
+ default:
+ tcg_abort();
+ }
+}
+
+static void tcg_out_bc(TCGContext *s, int bc, TCGLabel *l)
+{
+ if (l->has_value) {
+ tcg_out32(s, bc | reloc_pc14_val(s->code_ptr, l->u.value_ptr));
+ } else {
+ tcg_out_reloc(s, s->code_ptr, R_PPC_REL14, l, 0);
+ tcg_out_bc_noaddr(s, bc);
+ }
+}
+
+static void tcg_out_brcond(TCGContext *s, TCGCond cond,
+ TCGArg arg1, TCGArg arg2, int const_arg2,
+ TCGLabel *l, TCGType type)
+{
+ tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
+ tcg_out_bc(s, tcg_to_bc[cond], l);
+}
+
+static void tcg_out_movcond(TCGContext *s, TCGType type, TCGCond cond,
+ TCGArg dest, TCGArg c1, TCGArg c2, TCGArg v1,
+ TCGArg v2, bool const_c2)
+{
+ /* If for some reason both inputs are zero, don't produce bad code. */
+ if (v1 == 0 && v2 == 0) {
+ tcg_out_movi(s, type, dest, 0);
+ return;
+ }
+
+ tcg_out_cmp(s, cond, c1, c2, const_c2, 7, type);
+
+ if (HAVE_ISEL) {
+ int isel = tcg_to_isel[cond];
+
+ /* Swap the V operands if the operation indicates inversion. */
+ if (isel & 1) {
+ int t = v1;
+ v1 = v2;
+ v2 = t;
+ isel &= ~1;
+ }
+ /* V1 == 0 is handled by isel; V2 == 0 must be handled by hand. */
+ if (v2 == 0) {
+ tcg_out_movi(s, type, TCG_REG_R0, 0);
+ }
+ tcg_out32(s, isel | TAB(dest, v1, v2));
+ } else {
+ if (dest == v2) {
+ cond = tcg_invert_cond(cond);
+ v2 = v1;
+ } else if (dest != v1) {
+ if (v1 == 0) {
+ tcg_out_movi(s, type, dest, 0);
+ } else {
+ tcg_out_mov(s, type, dest, v1);
+ }
+ }
+ /* Branch forward over one insn */
+ tcg_out32(s, tcg_to_bc[cond] | 8);
+ if (v2 == 0) {
+ tcg_out_movi(s, type, dest, 0);
+ } else {
+ tcg_out_mov(s, type, dest, v2);
+ }
+ }
+}
+
+static void tcg_out_cmp2(TCGContext *s, const TCGArg *args,
+ const int *const_args)
+{
+ static const struct { uint8_t bit1, bit2; } bits[] = {
+ [TCG_COND_LT ] = { CR_LT, CR_LT },
+ [TCG_COND_LE ] = { CR_LT, CR_GT },
+ [TCG_COND_GT ] = { CR_GT, CR_GT },
+ [TCG_COND_GE ] = { CR_GT, CR_LT },
+ [TCG_COND_LTU] = { CR_LT, CR_LT },
+ [TCG_COND_LEU] = { CR_LT, CR_GT },
+ [TCG_COND_GTU] = { CR_GT, CR_GT },
+ [TCG_COND_GEU] = { CR_GT, CR_LT },
+ };
+
+ TCGCond cond = args[4], cond2;
+ TCGArg al, ah, bl, bh;
+ int blconst, bhconst;
+ int op, bit1, bit2;
+
+ al = args[0];
+ ah = args[1];
+ bl = args[2];
+ bh = args[3];
+ blconst = const_args[2];
+ bhconst = const_args[3];
+
+ switch (cond) {
+ case TCG_COND_EQ:
+ op = CRAND;
+ goto do_equality;
+ case TCG_COND_NE:
+ op = CRNAND;
+ do_equality:
+ tcg_out_cmp(s, cond, al, bl, blconst, 6, TCG_TYPE_I32);
+ tcg_out_cmp(s, cond, ah, bh, bhconst, 7, TCG_TYPE_I32);
+ tcg_out32(s, op | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
+ break;
+
+ case TCG_COND_LT:
+ case TCG_COND_LE:
+ case TCG_COND_GT:
+ case TCG_COND_GE:
+ case TCG_COND_LTU:
+ case TCG_COND_LEU:
+ case TCG_COND_GTU:
+ case TCG_COND_GEU:
+ bit1 = bits[cond].bit1;
+ bit2 = bits[cond].bit2;
+ op = (bit1 != bit2 ? CRANDC : CRAND);
+ cond2 = tcg_unsigned_cond(cond);
+
+ tcg_out_cmp(s, cond, ah, bh, bhconst, 6, TCG_TYPE_I32);
+ tcg_out_cmp(s, cond2, al, bl, blconst, 7, TCG_TYPE_I32);
+ tcg_out32(s, op | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, bit2));
+ tcg_out32(s, CROR | BT(7, CR_EQ) | BA(6, bit1) | BB(7, CR_EQ));
+ break;
+
+ default:
+ tcg_abort();
+ }
+}
+
+static void tcg_out_setcond2(TCGContext *s, const TCGArg *args,
+ const int *const_args)
+{
+ tcg_out_cmp2(s, args + 1, const_args + 1);
+ tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7));
+ tcg_out_rlw(s, RLWINM, args[0], TCG_REG_R0, 31, 31, 31);
+}
+
+static void tcg_out_brcond2 (TCGContext *s, const TCGArg *args,
+ const int *const_args)
+{
+ tcg_out_cmp2(s, args, const_args);
+ tcg_out_bc(s, BC | BI(7, CR_EQ) | BO_COND_TRUE, arg_label(args[5]));
+}
+
+void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
+{
+ TCGContext s;
+
+ s.code_buf = s.code_ptr = (tcg_insn_unit *)jmp_addr;
+ tcg_out_b(&s, 0, (tcg_insn_unit *)addr);
+ flush_icache_range(jmp_addr, jmp_addr + tcg_current_code_size(&s));
+}
+
+static void tcg_out_call(TCGContext *s, tcg_insn_unit *target)
+{
+#ifdef _CALL_AIX
+ /* Look through the descriptor. If the branch is in range, and we
+ don't have to spend too much effort on building the toc. */
+ void *tgt = ((void **)target)[0];
+ uintptr_t toc = ((uintptr_t *)target)[1];
+ intptr_t diff = tcg_pcrel_diff(s, tgt);
+
+ if (in_range_b(diff) && toc == (uint32_t)toc) {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, toc);
+ tcg_out_b(s, LK, tgt);
+ } else {
+ /* Fold the low bits of the constant into the addresses below. */
+ intptr_t arg = (intptr_t)target;
+ int ofs = (int16_t)arg;
+
+ if (ofs + 8 < 0x8000) {
+ arg -= ofs;
+ } else {
+ ofs = 0;
+ }
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, arg);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_TMP1, ofs);
+ tcg_out32(s, MTSPR | RA(TCG_REG_R0) | CTR);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_REG_TMP1, ofs + SZP);
+ tcg_out32(s, BCCTR | BO_ALWAYS | LK);
+ }
+#elif defined(_CALL_ELF) && _CALL_ELF == 2
+ intptr_t diff;
+
+ /* In the ELFv2 ABI, we have to set up r12 to contain the destination
+ address, which the callee uses to compute its TOC address. */
+ /* FIXME: when the branch is in range, we could avoid r12 load if we
+ knew that the destination uses the same TOC, and what its local
+ entry point offset is. */
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R12, (intptr_t)target);
+
+ diff = tcg_pcrel_diff(s, target);
+ if (in_range_b(diff)) {
+ tcg_out_b(s, LK, target);
+ } else {
+ tcg_out32(s, MTSPR | RS(TCG_REG_R12) | CTR);
+ tcg_out32(s, BCCTR | BO_ALWAYS | LK);
+ }
+#else
+ tcg_out_b(s, LK, target);
+#endif
+}
+
+static const uint32_t qemu_ldx_opc[16] = {
+ [MO_UB] = LBZX,
+ [MO_UW] = LHZX,
+ [MO_UL] = LWZX,
+ [MO_Q] = LDX,
+ [MO_SW] = LHAX,
+ [MO_SL] = LWAX,
+ [MO_BSWAP | MO_UB] = LBZX,
+ [MO_BSWAP | MO_UW] = LHBRX,
+ [MO_BSWAP | MO_UL] = LWBRX,
+ [MO_BSWAP | MO_Q] = LDBRX,
+};
+
+static const uint32_t qemu_stx_opc[16] = {
+ [MO_UB] = STBX,
+ [MO_UW] = STHX,
+ [MO_UL] = STWX,
+ [MO_Q] = STDX,
+ [MO_BSWAP | MO_UB] = STBX,
+ [MO_BSWAP | MO_UW] = STHBRX,
+ [MO_BSWAP | MO_UL] = STWBRX,
+ [MO_BSWAP | MO_Q] = STDBRX,
+};
+
+static const uint32_t qemu_exts_opc[4] = {
+ EXTSB, EXTSH, EXTSW, 0
+};
+
+#if defined (CONFIG_SOFTMMU)
+/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
+ * int mmu_idx, uintptr_t ra)
+ */
+static void * const qemu_ld_helpers[16] = {
+ [MO_UB] = helper_ret_ldub_mmu,
+ [MO_LEUW] = helper_le_lduw_mmu,
+ [MO_LEUL] = helper_le_ldul_mmu,
+ [MO_LEQ] = helper_le_ldq_mmu,
+ [MO_BEUW] = helper_be_lduw_mmu,
+ [MO_BEUL] = helper_be_ldul_mmu,
+ [MO_BEQ] = helper_be_ldq_mmu,
+};
+
+/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
+ * uintxx_t val, int mmu_idx, uintptr_t ra)
+ */
+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,
+};
+
+/* Perform the TLB load and compare. Places the result of the comparison
+ in CR7, loads the addend of the TLB into R3, and returns the register
+ containing the guest address (zero-extended into R4). Clobbers R0 and R2. */
+
+static TCGReg tcg_out_tlb_read(TCGContext *s, TCGMemOp s_bits,
+ TCGReg addrlo, TCGReg addrhi,
+ int mem_index, bool is_read)
+{
+ int cmp_off
+ = (is_read
+ ? offsetof(CPUArchState, tlb_table[mem_index][0].addr_read)
+ : offsetof(CPUArchState, tlb_table[mem_index][0].addr_write));
+ int add_off = offsetof(CPUArchState, tlb_table[mem_index][0].addend);
+ TCGReg base = TCG_AREG0;
+
+ /* Extract the page index, shifted into place for tlb index. */
+ if (TCG_TARGET_REG_BITS == 64) {
+ if (TARGET_LONG_BITS == 32) {
+ /* Zero-extend the address into a place helpful for further use. */
+ tcg_out_ext32u(s, TCG_REG_R4, addrlo);
+ addrlo = TCG_REG_R4;
+ } else {
+ tcg_out_rld(s, RLDICL, TCG_REG_R3, addrlo,
+ 64 - TARGET_PAGE_BITS, 64 - CPU_TLB_BITS);
+ }
+ }
+
+ /* Compensate for very large offsets. */
+ if (add_off >= 0x8000) {
+ /* Most target env are smaller than 32k; none are larger than 64k.
+ Simplify the logic here merely to offset by 0x7ff0, giving us a
+ range just shy of 64k. Check this assumption. */
+ QEMU_BUILD_BUG_ON(offsetof(CPUArchState,
+ tlb_table[NB_MMU_MODES - 1][1])
+ > 0x7ff0 + 0x7fff);
+ tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, base, 0x7ff0));
+ base = TCG_REG_TMP1;
+ cmp_off -= 0x7ff0;
+ add_off -= 0x7ff0;
+ }
+
+ /* Extraction and shifting, part 2. */
+ if (TCG_TARGET_REG_BITS == 32 || TARGET_LONG_BITS == 32) {
+ tcg_out_rlw(s, RLWINM, TCG_REG_R3, addrlo,
+ 32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
+ 32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS),
+ 31 - CPU_TLB_ENTRY_BITS);
+ } else {
+ tcg_out_shli64(s, TCG_REG_R3, TCG_REG_R3, CPU_TLB_ENTRY_BITS);
+ }
+
+ tcg_out32(s, ADD | TAB(TCG_REG_R3, TCG_REG_R3, base));
+
+ /* Load the tlb comparator. */
+ if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
+ tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_R4, TCG_REG_R3, cmp_off);
+ tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP1, TCG_REG_R3, cmp_off + 4);
+ } else {
+ tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_TMP1, TCG_REG_R3, cmp_off);
+ }
+
+ /* Load the TLB addend for use on the fast path. Do this asap
+ to minimize any load use delay. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R3, TCG_REG_R3, add_off);
+
+ /* Clear the non-page, non-alignment bits from the address. */
+ if (TCG_TARGET_REG_BITS == 32 || TARGET_LONG_BITS == 32) {
+ tcg_out_rlw(s, RLWINM, TCG_REG_R0, addrlo, 0,
+ (32 - s_bits) & 31, 31 - TARGET_PAGE_BITS);
+ } else if (!s_bits) {
+ tcg_out_rld(s, RLDICR, TCG_REG_R0, addrlo,
+ 0, 63 - TARGET_PAGE_BITS);
+ } else {
+ tcg_out_rld(s, RLDICL, TCG_REG_R0, addrlo,
+ 64 - TARGET_PAGE_BITS, TARGET_PAGE_BITS - s_bits);
+ tcg_out_rld(s, RLDICL, TCG_REG_R0, TCG_REG_R0, TARGET_PAGE_BITS, 0);
+ }
+
+ if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
+ tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP1,
+ 0, 7, TCG_TYPE_I32);
+ tcg_out_cmp(s, TCG_COND_EQ, addrhi, TCG_REG_R4, 0, 6, TCG_TYPE_I32);
+ tcg_out32(s, CRAND | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
+ } else {
+ tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP1,
+ 0, 7, TCG_TYPE_TL);
+ }
+
+ return addrlo;
+}
+
+/* Record the context of a call to the out of line helper code for the slow
+ path for a load or store, so that we can later generate the correct
+ helper code. */
+static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOpIdx oi,
+ TCGReg datalo_reg, TCGReg datahi_reg,
+ TCGReg addrlo_reg, TCGReg addrhi_reg,
+ tcg_insn_unit *raddr, tcg_insn_unit *lptr)
+{
+ TCGLabelQemuLdst *label = new_ldst_label(s);
+
+ label->is_ld = is_ld;
+ label->oi = oi;
+ label->datalo_reg = datalo_reg;
+ label->datahi_reg = datahi_reg;
+ label->addrlo_reg = addrlo_reg;
+ label->addrhi_reg = addrhi_reg;
+ label->raddr = raddr;
+ label->label_ptr[0] = lptr;
+}
+
+static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
+{
+ TCGMemOpIdx oi = lb->oi;
+ TCGMemOp opc = get_memop(oi);
+ TCGReg hi, lo, arg = TCG_REG_R3;
+
+ reloc_pc14(lb->label_ptr[0], s->code_ptr);
+
+ tcg_out_mov(s, TCG_TYPE_PTR, arg++, TCG_AREG0);
+
+ lo = lb->addrlo_reg;
+ hi = lb->addrhi_reg;
+ if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
+#ifdef TCG_TARGET_CALL_ALIGN_ARGS
+ arg |= 1;
+#endif
+ tcg_out_mov(s, TCG_TYPE_I32, arg++, hi);
+ tcg_out_mov(s, TCG_TYPE_I32, arg++, lo);
+ } else {
+ /* If the address needed to be zero-extended, we'll have already
+ placed it in R4. The only remaining case is 64-bit guest. */
+ tcg_out_mov(s, TCG_TYPE_TL, arg++, lo);
+ }
+
+ tcg_out_movi(s, TCG_TYPE_I32, arg++, oi);
+ tcg_out32(s, MFSPR | RT(arg) | LR);
+
+ tcg_out_call(s, qemu_ld_helpers[opc & (MO_BSWAP | MO_SIZE)]);
+
+ lo = lb->datalo_reg;
+ hi = lb->datahi_reg;
+ if (TCG_TARGET_REG_BITS == 32 && (opc & MO_SIZE) == MO_64) {
+ tcg_out_mov(s, TCG_TYPE_I32, lo, TCG_REG_R4);
+ tcg_out_mov(s, TCG_TYPE_I32, hi, TCG_REG_R3);
+ } else if (opc & MO_SIGN) {
+ uint32_t insn = qemu_exts_opc[opc & MO_SIZE];
+ tcg_out32(s, insn | RA(lo) | RS(TCG_REG_R3));
+ } else {
+ tcg_out_mov(s, TCG_TYPE_REG, lo, TCG_REG_R3);
+ }
+
+ tcg_out_b(s, 0, lb->raddr);
+}
+
+static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
+{
+ TCGMemOpIdx oi = lb->oi;
+ TCGMemOp opc = get_memop(oi);
+ TCGMemOp s_bits = opc & MO_SIZE;
+ TCGReg hi, lo, arg = TCG_REG_R3;
+
+ reloc_pc14(lb->label_ptr[0], s->code_ptr);
+
+ tcg_out_mov(s, TCG_TYPE_PTR, arg++, TCG_AREG0);
+
+ lo = lb->addrlo_reg;
+ hi = lb->addrhi_reg;
+ if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
+#ifdef TCG_TARGET_CALL_ALIGN_ARGS
+ arg |= 1;
+#endif
+ tcg_out_mov(s, TCG_TYPE_I32, arg++, hi);
+ tcg_out_mov(s, TCG_TYPE_I32, arg++, lo);
+ } else {
+ /* If the address needed to be zero-extended, we'll have already
+ placed it in R4. The only remaining case is 64-bit guest. */
+ tcg_out_mov(s, TCG_TYPE_TL, arg++, lo);
+ }
+
+ lo = lb->datalo_reg;
+ hi = lb->datahi_reg;
+ if (TCG_TARGET_REG_BITS == 32) {
+ switch (s_bits) {
+ case MO_64:
+#ifdef TCG_TARGET_CALL_ALIGN_ARGS
+ arg |= 1;
+#endif
+ tcg_out_mov(s, TCG_TYPE_I32, arg++, hi);
+ /* FALLTHRU */
+ case MO_32:
+ tcg_out_mov(s, TCG_TYPE_I32, arg++, lo);
+ break;
+ default:
+ tcg_out_rlw(s, RLWINM, arg++, lo, 0, 32 - (8 << s_bits), 31);
+ break;
+ }
+ } else {
+ if (s_bits == MO_64) {
+ tcg_out_mov(s, TCG_TYPE_I64, arg++, lo);
+ } else {
+ tcg_out_rld(s, RLDICL, arg++, lo, 0, 64 - (8 << s_bits));
+ }
+ }
+
+ tcg_out_movi(s, TCG_TYPE_I32, arg++, oi);
+ tcg_out32(s, MFSPR | RT(arg) | LR);
+
+ tcg_out_call(s, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]);
+
+ tcg_out_b(s, 0, lb->raddr);
+}
+#endif /* SOFTMMU */
+
+static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is_64)
+{
+ TCGReg datalo, datahi, addrlo, rbase;
+ TCGReg addrhi __attribute__((unused));
+ TCGMemOpIdx oi;
+ TCGMemOp opc, s_bits;
+#ifdef CONFIG_SOFTMMU
+ int mem_index;
+ tcg_insn_unit *label_ptr;
+#endif
+
+ datalo = *args++;
+ datahi = (TCG_TARGET_REG_BITS == 32 && is_64 ? *args++ : 0);
+ addrlo = *args++;
+ addrhi = (TCG_TARGET_REG_BITS < TARGET_LONG_BITS ? *args++ : 0);
+ oi = *args++;
+ opc = get_memop(oi);
+ s_bits = opc & MO_SIZE;
+
+#ifdef CONFIG_SOFTMMU
+ mem_index = get_mmuidx(oi);
+ addrlo = tcg_out_tlb_read(s, s_bits, addrlo, addrhi, mem_index, true);
+
+ /* Load a pointer into the current opcode w/conditional branch-link. */
+ label_ptr = s->code_ptr;
+ tcg_out_bc_noaddr(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
+
+ rbase = TCG_REG_R3;
+#else /* !CONFIG_SOFTMMU */
+ rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
+ if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) {
+ tcg_out_ext32u(s, TCG_REG_TMP1, addrlo);
+ addrlo = TCG_REG_TMP1;
+ }
+#endif
+
+ if (TCG_TARGET_REG_BITS == 32 && s_bits == MO_64) {
+ if (opc & MO_BSWAP) {
+ tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
+ tcg_out32(s, LWBRX | TAB(datalo, rbase, addrlo));
+ tcg_out32(s, LWBRX | TAB(datahi, rbase, TCG_REG_R0));
+ } else if (rbase != 0) {
+ tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
+ tcg_out32(s, LWZX | TAB(datahi, rbase, addrlo));
+ tcg_out32(s, LWZX | TAB(datalo, rbase, TCG_REG_R0));
+ } else if (addrlo == datahi) {
+ tcg_out32(s, LWZ | TAI(datalo, addrlo, 4));
+ tcg_out32(s, LWZ | TAI(datahi, addrlo, 0));
+ } else {
+ tcg_out32(s, LWZ | TAI(datahi, addrlo, 0));
+ tcg_out32(s, LWZ | TAI(datalo, addrlo, 4));
+ }
+ } else {
+ uint32_t insn = qemu_ldx_opc[opc & (MO_BSWAP | MO_SSIZE)];
+ if (!HAVE_ISA_2_06 && insn == LDBRX) {
+ tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
+ tcg_out32(s, LWBRX | TAB(datalo, rbase, addrlo));
+ tcg_out32(s, LWBRX | TAB(TCG_REG_R0, rbase, TCG_REG_R0));
+ tcg_out_rld(s, RLDIMI, datalo, TCG_REG_R0, 32, 0);
+ } else if (insn) {
+ tcg_out32(s, insn | TAB(datalo, rbase, addrlo));
+ } else {
+ insn = qemu_ldx_opc[opc & (MO_SIZE | MO_BSWAP)];
+ tcg_out32(s, insn | TAB(datalo, rbase, addrlo));
+ insn = qemu_exts_opc[s_bits];
+ tcg_out32(s, insn | RA(datalo) | RS(datalo));
+ }
+ }
+
+#ifdef CONFIG_SOFTMMU
+ add_qemu_ldst_label(s, true, oi, datalo, datahi, addrlo, addrhi,
+ s->code_ptr, label_ptr);
+#endif
+}
+
+static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is_64)
+{
+ TCGReg datalo, datahi, addrlo, rbase;
+ TCGReg addrhi __attribute__((unused));
+ TCGMemOpIdx oi;
+ TCGMemOp opc, s_bits;
+#ifdef CONFIG_SOFTMMU
+ int mem_index;
+ tcg_insn_unit *label_ptr;
+#endif
+
+ datalo = *args++;
+ datahi = (TCG_TARGET_REG_BITS == 32 && is_64 ? *args++ : 0);
+ addrlo = *args++;
+ addrhi = (TCG_TARGET_REG_BITS < TARGET_LONG_BITS ? *args++ : 0);
+ oi = *args++;
+ opc = get_memop(oi);
+ s_bits = opc & MO_SIZE;
+
+#ifdef CONFIG_SOFTMMU
+ mem_index = get_mmuidx(oi);
+ addrlo = tcg_out_tlb_read(s, s_bits, addrlo, addrhi, mem_index, false);
+
+ /* Load a pointer into the current opcode w/conditional branch-link. */
+ label_ptr = s->code_ptr;
+ tcg_out_bc_noaddr(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
+
+ rbase = TCG_REG_R3;
+#else /* !CONFIG_SOFTMMU */
+ rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
+ if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) {
+ tcg_out_ext32u(s, TCG_REG_TMP1, addrlo);
+ addrlo = TCG_REG_TMP1;
+ }
+#endif
+
+ if (TCG_TARGET_REG_BITS == 32 && s_bits == MO_64) {
+ if (opc & MO_BSWAP) {
+ tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
+ tcg_out32(s, STWBRX | SAB(datalo, rbase, addrlo));
+ tcg_out32(s, STWBRX | SAB(datahi, rbase, TCG_REG_R0));
+ } else if (rbase != 0) {
+ tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
+ tcg_out32(s, STWX | SAB(datahi, rbase, addrlo));
+ tcg_out32(s, STWX | SAB(datalo, rbase, TCG_REG_R0));
+ } else {
+ tcg_out32(s, STW | TAI(datahi, addrlo, 0));
+ tcg_out32(s, STW | TAI(datalo, addrlo, 4));
+ }
+ } else {
+ uint32_t insn = qemu_stx_opc[opc & (MO_BSWAP | MO_SIZE)];
+ if (!HAVE_ISA_2_06 && insn == STDBRX) {
+ tcg_out32(s, STWBRX | SAB(datalo, rbase, addrlo));
+ tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, addrlo, 4));
+ tcg_out_shri64(s, TCG_REG_R0, datalo, 32);
+ tcg_out32(s, STWBRX | SAB(TCG_REG_R0, rbase, TCG_REG_TMP1));
+ } else {
+ tcg_out32(s, insn | SAB(datalo, rbase, addrlo));
+ }
+ }
+
+#ifdef CONFIG_SOFTMMU
+ add_qemu_ldst_label(s, false, oi, datalo, datahi, addrlo, addrhi,
+ s->code_ptr, label_ptr);
+#endif
+}
+
+/* Parameters for function call generation, used in tcg.c. */
+#define TCG_TARGET_STACK_ALIGN 16
+#define TCG_TARGET_EXTEND_ARGS 1
+
+#ifdef _CALL_AIX
+# define LINK_AREA_SIZE (6 * SZR)
+# define LR_OFFSET (1 * SZR)
+# define TCG_TARGET_CALL_STACK_OFFSET (LINK_AREA_SIZE + 8 * SZR)
+#elif defined(TCG_TARGET_CALL_DARWIN)
+# define LINK_AREA_SIZE (6 * SZR)
+# define LR_OFFSET (2 * SZR)
+#elif TCG_TARGET_REG_BITS == 64
+# if defined(_CALL_ELF) && _CALL_ELF == 2
+# define LINK_AREA_SIZE (4 * SZR)
+# define LR_OFFSET (1 * SZR)
+# endif
+#else /* TCG_TARGET_REG_BITS == 32 */
+# if defined(_CALL_SYSV)
+# define LINK_AREA_SIZE (2 * SZR)
+# define LR_OFFSET (1 * SZR)
+# endif
+#endif
+#ifndef LR_OFFSET
+# error "Unhandled abi"
+#endif
+#ifndef TCG_TARGET_CALL_STACK_OFFSET
+# define TCG_TARGET_CALL_STACK_OFFSET LINK_AREA_SIZE
+#endif
+
+#define CPU_TEMP_BUF_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long))
+#define REG_SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * SZR)
+
+#define FRAME_SIZE ((TCG_TARGET_CALL_STACK_OFFSET \
+ + TCG_STATIC_CALL_ARGS_SIZE \
+ + CPU_TEMP_BUF_SIZE \
+ + REG_SAVE_SIZE \
+ + TCG_TARGET_STACK_ALIGN - 1) \
+ & -TCG_TARGET_STACK_ALIGN)
+
+#define REG_SAVE_BOT (FRAME_SIZE - REG_SAVE_SIZE)
+
+static void tcg_target_qemu_prologue(TCGContext *s)
+{
+ int i;
+
+#ifdef _CALL_AIX
+ void **desc = (void **)s->code_ptr;
+ desc[0] = desc + 2; /* entry point */
+ desc[1] = 0; /* environment pointer */
+ s->code_ptr = (void *)(desc + 2); /* skip over descriptor */
+#endif
+
+ tcg_set_frame(s, TCG_REG_CALL_STACK, REG_SAVE_BOT - CPU_TEMP_BUF_SIZE,
+ CPU_TEMP_BUF_SIZE);
+
+ /* Prologue */
+ tcg_out32(s, MFSPR | RT(TCG_REG_R0) | LR);
+ tcg_out32(s, (SZR == 8 ? STDU : STWU)
+ | SAI(TCG_REG_R1, TCG_REG_R1, -FRAME_SIZE));
+
+ for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) {
+ tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i],
+ TCG_REG_R1, REG_SAVE_BOT + i * SZR);
+ }
+ tcg_out_st(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET);
+
+#ifdef CONFIG_USE_GUEST_BASE
+ if (GUEST_BASE) {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, GUEST_BASE);
+ tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
+ }
+#endif
+
+ tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
+ tcg_out32(s, MTSPR | RS(tcg_target_call_iarg_regs[1]) | CTR);
+
+ if (USE_REG_RA) {
+#ifdef _CALL_AIX
+ /* Make the caller load the value as the TOC into R2. */
+ tb_ret_addr = s->code_ptr + 2;
+ desc[1] = tb_ret_addr;
+ tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_RA, TCG_REG_R2);
+ tcg_out32(s, BCCTR | BO_ALWAYS);
+#elif defined(_CALL_ELF) && _CALL_ELF == 2
+ /* Compute from the incoming R12 value. */
+ tb_ret_addr = s->code_ptr + 2;
+ tcg_out32(s, ADDI | TAI(TCG_REG_RA, TCG_REG_R12,
+ tcg_ptr_byte_diff(tb_ret_addr, s->code_buf)));
+ tcg_out32(s, BCCTR | BO_ALWAYS);
+#else
+ /* Reserve max 5 insns for the constant load. */
+ tb_ret_addr = s->code_ptr + 6;
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RA, (intptr_t)tb_ret_addr);
+ tcg_out32(s, BCCTR | BO_ALWAYS);
+ while (s->code_ptr < tb_ret_addr) {
+ tcg_out32(s, NOP);
+ }
+#endif
+ } else {
+ tcg_out32(s, BCCTR | BO_ALWAYS);
+ tb_ret_addr = s->code_ptr;
+ }
+
+ /* Epilogue */
+ assert(tb_ret_addr == s->code_ptr);
+
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET);
+ for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) {
+ tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i],
+ TCG_REG_R1, REG_SAVE_BOT + i * SZR);
+ }
+ tcg_out32(s, MTSPR | RS(TCG_REG_R0) | LR);
+ tcg_out32(s, ADDI | TAI(TCG_REG_R1, TCG_REG_R1, FRAME_SIZE));
+ tcg_out32(s, BCLR | BO_ALWAYS);
+}
+
+static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
+ const int *const_args)
+{
+ TCGArg a0, a1, a2;
+ int c;
+
+ switch (opc) {
+ case INDEX_op_exit_tb:
+ if (USE_REG_RA) {
+ ptrdiff_t disp = tcg_pcrel_diff(s, tb_ret_addr);
+
+ /* If we can use a direct branch, otherwise use the value in RA.
+ Note that the direct branch is always forward. If it's in
+ range now, it'll still be in range after the movi. Don't
+ bother about the 20 bytes where the test here fails but it
+ would succeed below. */
+ if (!in_range_b(disp)) {
+ tcg_out32(s, MTSPR | RS(TCG_REG_RA) | CTR);
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, args[0]);
+ tcg_out32(s, BCCTR | BO_ALWAYS);
+ break;
+ }
+ }
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, args[0]);
+ tcg_out_b(s, 0, tb_ret_addr);
+ break;
+ case INDEX_op_goto_tb:
+ if (s->tb_jmp_offset) {
+ /* Direct jump method. */
+ s->tb_jmp_offset[args[0]] = tcg_current_code_size(s);
+ s->code_ptr += 7;
+ } else {
+ /* Indirect jump method. */
+ tcg_abort();
+ }
+ s->tb_next_offset[args[0]] = tcg_current_code_size(s);
+ break;
+ case INDEX_op_br:
+ {
+ TCGLabel *l = arg_label(args[0]);
+
+ if (l->has_value) {
+ tcg_out_b(s, 0, l->u.value_ptr);
+ } else {
+ tcg_out_reloc(s, s->code_ptr, R_PPC_REL24, l, 0);
+ tcg_out_b_noaddr(s, B);
+ }
+ }
+ break;
+ case INDEX_op_ld8u_i32:
+ case INDEX_op_ld8u_i64:
+ tcg_out_mem_long(s, LBZ, LBZX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_ld8s_i32:
+ case INDEX_op_ld8s_i64:
+ tcg_out_mem_long(s, LBZ, LBZX, args[0], args[1], args[2]);
+ tcg_out32(s, EXTSB | RS(args[0]) | RA(args[0]));
+ break;
+ case INDEX_op_ld16u_i32:
+ case INDEX_op_ld16u_i64:
+ tcg_out_mem_long(s, LHZ, LHZX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_ld16s_i32:
+ case INDEX_op_ld16s_i64:
+ tcg_out_mem_long(s, LHA, LHAX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_ld_i32:
+ case INDEX_op_ld32u_i64:
+ tcg_out_mem_long(s, LWZ, LWZX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_ld32s_i64:
+ tcg_out_mem_long(s, LWA, LWAX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_ld_i64:
+ tcg_out_mem_long(s, LD, LDX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_st8_i32:
+ case INDEX_op_st8_i64:
+ tcg_out_mem_long(s, STB, STBX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_st16_i32:
+ case INDEX_op_st16_i64:
+ tcg_out_mem_long(s, STH, STHX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_st_i32:
+ case INDEX_op_st32_i64:
+ tcg_out_mem_long(s, STW, STWX, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_st_i64:
+ tcg_out_mem_long(s, STD, STDX, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_add_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ do_addi_32:
+ tcg_out_mem_long(s, ADDI, ADD, a0, a1, (int32_t)a2);
+ } else {
+ tcg_out32(s, ADD | TAB(a0, a1, a2));
+ }
+ break;
+ case INDEX_op_sub_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[1]) {
+ if (const_args[2]) {
+ tcg_out_movi(s, TCG_TYPE_I32, a0, a1 - a2);
+ } else {
+ tcg_out32(s, SUBFIC | TAI(a0, a2, a1));
+ }
+ } else if (const_args[2]) {
+ a2 = -a2;
+ goto do_addi_32;
+ } else {
+ tcg_out32(s, SUBF | TAB(a0, a2, a1));
+ }
+ break;
+
+ case INDEX_op_and_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out_andi32(s, a0, a1, a2);
+ } else {
+ tcg_out32(s, AND | SAB(a1, a0, a2));
+ }
+ break;
+ case INDEX_op_and_i64:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out_andi64(s, a0, a1, a2);
+ } else {
+ tcg_out32(s, AND | SAB(a1, a0, a2));
+ }
+ break;
+ case INDEX_op_or_i64:
+ case INDEX_op_or_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out_ori32(s, a0, a1, a2);
+ } else {
+ tcg_out32(s, OR | SAB(a1, a0, a2));
+ }
+ break;
+ case INDEX_op_xor_i64:
+ case INDEX_op_xor_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out_xori32(s, a0, a1, a2);
+ } else {
+ tcg_out32(s, XOR | SAB(a1, a0, a2));
+ }
+ break;
+ case INDEX_op_andc_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out_andi32(s, a0, a1, ~a2);
+ } else {
+ tcg_out32(s, ANDC | SAB(a1, a0, a2));
+ }
+ break;
+ case INDEX_op_andc_i64:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out_andi64(s, a0, a1, ~a2);
+ } else {
+ tcg_out32(s, ANDC | SAB(a1, a0, a2));
+ }
+ break;
+ case INDEX_op_orc_i32:
+ if (const_args[2]) {
+ tcg_out_ori32(s, args[0], args[1], ~args[2]);
+ break;
+ }
+ /* FALLTHRU */
+ case INDEX_op_orc_i64:
+ tcg_out32(s, ORC | SAB(args[1], args[0], args[2]));
+ break;
+ case INDEX_op_eqv_i32:
+ if (const_args[2]) {
+ tcg_out_xori32(s, args[0], args[1], ~args[2]);
+ break;
+ }
+ /* FALLTHRU */
+ case INDEX_op_eqv_i64:
+ tcg_out32(s, EQV | SAB(args[1], args[0], args[2]));
+ break;
+ case INDEX_op_nand_i32:
+ case INDEX_op_nand_i64:
+ tcg_out32(s, NAND | SAB(args[1], args[0], args[2]));
+ break;
+ case INDEX_op_nor_i32:
+ case INDEX_op_nor_i64:
+ tcg_out32(s, NOR | SAB(args[1], args[0], args[2]));
+ break;
+
+ case INDEX_op_mul_i32:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out32(s, MULLI | TAI(a0, a1, a2));
+ } else {
+ tcg_out32(s, MULLW | TAB(a0, a1, a2));
+ }
+ break;
+
+ case INDEX_op_div_i32:
+ tcg_out32(s, DIVW | TAB(args[0], args[1], args[2]));
+ break;
+
+ case INDEX_op_divu_i32:
+ tcg_out32(s, DIVWU | TAB(args[0], args[1], args[2]));
+ break;
+
+ case INDEX_op_shl_i32:
+ if (const_args[2]) {
+ tcg_out_shli32(s, args[0], args[1], args[2]);
+ } else {
+ tcg_out32(s, SLW | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_shr_i32:
+ if (const_args[2]) {
+ tcg_out_shri32(s, args[0], args[1], args[2]);
+ } else {
+ tcg_out32(s, SRW | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_sar_i32:
+ if (const_args[2]) {
+ tcg_out32(s, SRAWI | RS(args[1]) | RA(args[0]) | SH(args[2]));
+ } else {
+ tcg_out32(s, SRAW | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_rotl_i32:
+ if (const_args[2]) {
+ tcg_out_rlw(s, RLWINM, args[0], args[1], args[2], 0, 31);
+ } else {
+ tcg_out32(s, RLWNM | SAB(args[1], args[0], args[2])
+ | MB(0) | ME(31));
+ }
+ break;
+ case INDEX_op_rotr_i32:
+ if (const_args[2]) {
+ tcg_out_rlw(s, RLWINM, args[0], args[1], 32 - args[2], 0, 31);
+ } else {
+ tcg_out32(s, SUBFIC | TAI(TCG_REG_R0, args[2], 32));
+ tcg_out32(s, RLWNM | SAB(args[1], args[0], TCG_REG_R0)
+ | MB(0) | ME(31));
+ }
+ break;
+
+ case INDEX_op_brcond_i32:
+ tcg_out_brcond(s, args[2], args[0], args[1], const_args[1],
+ arg_label(args[3]), TCG_TYPE_I32);
+ break;
+ case INDEX_op_brcond_i64:
+ tcg_out_brcond(s, args[2], args[0], args[1], const_args[1],
+ arg_label(args[3]), TCG_TYPE_I64);
+ break;
+ case INDEX_op_brcond2_i32:
+ tcg_out_brcond2(s, args, const_args);
+ break;
+
+ case INDEX_op_neg_i32:
+ case INDEX_op_neg_i64:
+ tcg_out32(s, NEG | RT(args[0]) | RA(args[1]));
+ break;
+
+ case INDEX_op_not_i32:
+ case INDEX_op_not_i64:
+ tcg_out32(s, NOR | SAB(args[1], args[0], args[1]));
+ break;
+
+ case INDEX_op_add_i64:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ do_addi_64:
+ tcg_out_mem_long(s, ADDI, ADD, a0, a1, a2);
+ } else {
+ tcg_out32(s, ADD | TAB(a0, a1, a2));
+ }
+ break;
+ case INDEX_op_sub_i64:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[1]) {
+ if (const_args[2]) {
+ tcg_out_movi(s, TCG_TYPE_I64, a0, a1 - a2);
+ } else {
+ tcg_out32(s, SUBFIC | TAI(a0, a2, a1));
+ }
+ } else if (const_args[2]) {
+ a2 = -a2;
+ goto do_addi_64;
+ } else {
+ tcg_out32(s, SUBF | TAB(a0, a2, a1));
+ }
+ break;
+
+ case INDEX_op_shl_i64:
+ if (const_args[2]) {
+ tcg_out_shli64(s, args[0], args[1], args[2]);
+ } else {
+ tcg_out32(s, SLD | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_shr_i64:
+ if (const_args[2]) {
+ tcg_out_shri64(s, args[0], args[1], args[2]);
+ } else {
+ tcg_out32(s, SRD | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_sar_i64:
+ if (const_args[2]) {
+ int sh = SH(args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
+ tcg_out32(s, SRADI | RA(args[0]) | RS(args[1]) | sh);
+ } else {
+ tcg_out32(s, SRAD | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_rotl_i64:
+ if (const_args[2]) {
+ tcg_out_rld(s, RLDICL, args[0], args[1], args[2], 0);
+ } else {
+ tcg_out32(s, RLDCL | SAB(args[1], args[0], args[2]) | MB64(0));
+ }
+ break;
+ case INDEX_op_rotr_i64:
+ if (const_args[2]) {
+ tcg_out_rld(s, RLDICL, args[0], args[1], 64 - args[2], 0);
+ } else {
+ tcg_out32(s, SUBFIC | TAI(TCG_REG_R0, args[2], 64));
+ tcg_out32(s, RLDCL | SAB(args[1], args[0], TCG_REG_R0) | MB64(0));
+ }
+ break;
+
+ case INDEX_op_mul_i64:
+ a0 = args[0], a1 = args[1], a2 = args[2];
+ if (const_args[2]) {
+ tcg_out32(s, MULLI | TAI(a0, a1, a2));
+ } else {
+ tcg_out32(s, MULLD | TAB(a0, a1, a2));
+ }
+ break;
+ case INDEX_op_div_i64:
+ tcg_out32(s, DIVD | TAB(args[0], args[1], args[2]));
+ break;
+ case INDEX_op_divu_i64:
+ tcg_out32(s, DIVDU | TAB(args[0], args[1], args[2]));
+ break;
+
+ case INDEX_op_qemu_ld_i32:
+ tcg_out_qemu_ld(s, args, false);
+ break;
+ case INDEX_op_qemu_ld_i64:
+ tcg_out_qemu_ld(s, args, true);
+ break;
+ case INDEX_op_qemu_st_i32:
+ tcg_out_qemu_st(s, args, false);
+ break;
+ case INDEX_op_qemu_st_i64:
+ tcg_out_qemu_st(s, args, true);
+ break;
+
+ case INDEX_op_ext8s_i32:
+ case INDEX_op_ext8s_i64:
+ c = EXTSB;
+ goto gen_ext;
+ case INDEX_op_ext16s_i32:
+ case INDEX_op_ext16s_i64:
+ c = EXTSH;
+ goto gen_ext;
+ case INDEX_op_ext32s_i64:
+ c = EXTSW;
+ goto gen_ext;
+ gen_ext:
+ tcg_out32(s, c | RS(args[1]) | RA(args[0]));
+ break;
+
+ case INDEX_op_setcond_i32:
+ tcg_out_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], args[2],
+ const_args[2]);
+ break;
+ case INDEX_op_setcond_i64:
+ tcg_out_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], args[2],
+ const_args[2]);
+ break;
+ case INDEX_op_setcond2_i32:
+ tcg_out_setcond2(s, args, const_args);
+ break;
+
+ case INDEX_op_bswap16_i32:
+ case INDEX_op_bswap16_i64:
+ a0 = args[0], a1 = args[1];
+ /* a1 = abcd */
+ if (a0 != a1) {
+ /* a0 = (a1 r<< 24) & 0xff # 000c */
+ tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
+ /* a0 = (a0 & ~0xff00) | (a1 r<< 8) & 0xff00 # 00dc */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 8, 16, 23);
+ } else {
+ /* r0 = (a1 r<< 8) & 0xff00 # 00d0 */
+ tcg_out_rlw(s, RLWINM, TCG_REG_R0, a1, 8, 16, 23);
+ /* a0 = (a1 r<< 24) & 0xff # 000c */
+ tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
+ /* a0 = a0 | r0 # 00dc */
+ tcg_out32(s, OR | SAB(TCG_REG_R0, a0, a0));
+ }
+ break;
+
+ case INDEX_op_bswap32_i32:
+ case INDEX_op_bswap32_i64:
+ /* Stolen from gcc's builtin_bswap32 */
+ a1 = args[1];
+ a0 = args[0] == a1 ? TCG_REG_R0 : args[0];
+
+ /* a1 = args[1] # abcd */
+ /* a0 = rotate_left (a1, 8) # bcda */
+ tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
+ /* a0 = (a0 & ~0xff000000) | ((a1 r<< 24) & 0xff000000) # dcda */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
+ /* a0 = (a0 & ~0x0000ff00) | ((a1 r<< 24) & 0x0000ff00) # dcba */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
+
+ if (a0 == TCG_REG_R0) {
+ tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
+ }
+ break;
+
+ case INDEX_op_bswap64_i64:
+ a0 = args[0], a1 = args[1], a2 = TCG_REG_R0;
+ if (a0 == a1) {
+ a0 = TCG_REG_R0;
+ a2 = a1;
+ }
+
+ /* a1 = # abcd efgh */
+ /* a0 = rl32(a1, 8) # 0000 fghe */
+ tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
+ /* a0 = dep(a0, rl32(a1, 24), 0xff000000) # 0000 hghe */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
+ /* a0 = dep(a0, rl32(a1, 24), 0x0000ff00) # 0000 hgfe */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
+
+ /* a0 = rl64(a0, 32) # hgfe 0000 */
+ /* a2 = rl64(a1, 32) # efgh abcd */
+ tcg_out_rld(s, RLDICL, a0, a0, 32, 0);
+ tcg_out_rld(s, RLDICL, a2, a1, 32, 0);
+
+ /* a0 = dep(a0, rl32(a2, 8), 0xffffffff) # hgfe bcda */
+ tcg_out_rlw(s, RLWIMI, a0, a2, 8, 0, 31);
+ /* a0 = dep(a0, rl32(a2, 24), 0xff000000) # hgfe dcda */
+ tcg_out_rlw(s, RLWIMI, a0, a2, 24, 0, 7);
+ /* a0 = dep(a0, rl32(a2, 24), 0x0000ff00) # hgfe dcba */
+ tcg_out_rlw(s, RLWIMI, a0, a2, 24, 16, 23);
+
+ if (a0 == 0) {
+ tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
+ }
+ break;
+
+ case INDEX_op_deposit_i32:
+ if (const_args[2]) {
+ uint32_t mask = ((2u << (args[4] - 1)) - 1) << args[3];
+ tcg_out_andi32(s, args[0], args[0], ~mask);
+ } else {
+ tcg_out_rlw(s, RLWIMI, args[0], args[2], args[3],
+ 32 - args[3] - args[4], 31 - args[3]);
+ }
+ break;
+ case INDEX_op_deposit_i64:
+ if (const_args[2]) {
+ uint64_t mask = ((2ull << (args[4] - 1)) - 1) << args[3];
+ tcg_out_andi64(s, args[0], args[0], ~mask);
+ } else {
+ tcg_out_rld(s, RLDIMI, args[0], args[2], args[3],
+ 64 - args[3] - args[4]);
+ }
+ break;
+
+ case INDEX_op_movcond_i32:
+ tcg_out_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], args[2],
+ args[3], args[4], const_args[2]);
+ break;
+ case INDEX_op_movcond_i64:
+ tcg_out_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], args[2],
+ args[3], args[4], const_args[2]);
+ break;
+
+#if TCG_TARGET_REG_BITS == 64
+ case INDEX_op_add2_i64:
+#else
+ case INDEX_op_add2_i32:
+#endif
+ /* Note that the CA bit is defined based on the word size of the
+ environment. So in 64-bit mode it's always carry-out of bit 63.
+ The fallback code using deposit works just as well for 32-bit. */
+ a0 = args[0], a1 = args[1];
+ if (a0 == args[3] || (!const_args[5] && a0 == args[5])) {
+ a0 = TCG_REG_R0;
+ }
+ if (const_args[4]) {
+ tcg_out32(s, ADDIC | TAI(a0, args[2], args[4]));
+ } else {
+ tcg_out32(s, ADDC | TAB(a0, args[2], args[4]));
+ }
+ if (const_args[5]) {
+ tcg_out32(s, (args[5] ? ADDME : ADDZE) | RT(a1) | RA(args[3]));
+ } else {
+ tcg_out32(s, ADDE | TAB(a1, args[3], args[5]));
+ }
+ if (a0 != args[0]) {
+ tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
+ }
+ break;
+
+#if TCG_TARGET_REG_BITS == 64
+ case INDEX_op_sub2_i64:
+#else
+ case INDEX_op_sub2_i32:
+#endif
+ a0 = args[0], a1 = args[1];
+ if (a0 == args[5] || (!const_args[3] && a0 == args[3])) {
+ a0 = TCG_REG_R0;
+ }
+ if (const_args[2]) {
+ tcg_out32(s, SUBFIC | TAI(a0, args[4], args[2]));
+ } else {
+ tcg_out32(s, SUBFC | TAB(a0, args[4], args[2]));
+ }
+ if (const_args[3]) {
+ tcg_out32(s, (args[3] ? SUBFME : SUBFZE) | RT(a1) | RA(args[5]));
+ } else {
+ tcg_out32(s, SUBFE | TAB(a1, args[5], args[3]));
+ }
+ if (a0 != args[0]) {
+ tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
+ }
+ break;
+
+ case INDEX_op_muluh_i32:
+ tcg_out32(s, MULHWU | TAB(args[0], args[1], args[2]));
+ break;
+ case INDEX_op_mulsh_i32:
+ tcg_out32(s, MULHW | TAB(args[0], args[1], args[2]));
+ break;
+ case INDEX_op_muluh_i64:
+ tcg_out32(s, MULHDU | TAB(args[0], args[1], args[2]));
+ break;
+ case INDEX_op_mulsh_i64:
+ tcg_out32(s, MULHD | TAB(args[0], args[1], args[2]));
+ 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 ppc_op_defs[] = {
+ { INDEX_op_exit_tb, { } },
+ { INDEX_op_goto_tb, { } },
+ { INDEX_op_br, { } },
+
+ { 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", "r", "ri" } },
+ { INDEX_op_mul_i32, { "r", "r", "rI" } },
+ { INDEX_op_div_i32, { "r", "r", "r" } },
+ { INDEX_op_divu_i32, { "r", "r", "r" } },
+ { INDEX_op_sub_i32, { "r", "rI", "ri" } },
+ { INDEX_op_and_i32, { "r", "r", "ri" } },
+ { INDEX_op_or_i32, { "r", "r", "ri" } },
+ { INDEX_op_xor_i32, { "r", "r", "ri" } },
+ { INDEX_op_andc_i32, { "r", "r", "ri" } },
+ { INDEX_op_orc_i32, { "r", "r", "ri" } },
+ { INDEX_op_eqv_i32, { "r", "r", "ri" } },
+ { INDEX_op_nand_i32, { "r", "r", "r" } },
+ { INDEX_op_nor_i32, { "r", "r", "r" } },
+
+ { INDEX_op_shl_i32, { "r", "r", "ri" } },
+ { INDEX_op_shr_i32, { "r", "r", "ri" } },
+ { INDEX_op_sar_i32, { "r", "r", "ri" } },
+ { INDEX_op_rotl_i32, { "r", "r", "ri" } },
+ { INDEX_op_rotr_i32, { "r", "r", "ri" } },
+
+ { INDEX_op_neg_i32, { "r", "r" } },
+ { INDEX_op_not_i32, { "r", "r" } },
+ { INDEX_op_ext8s_i32, { "r", "r" } },
+ { INDEX_op_ext16s_i32, { "r", "r" } },
+ { INDEX_op_bswap16_i32, { "r", "r" } },
+ { INDEX_op_bswap32_i32, { "r", "r" } },
+
+ { INDEX_op_brcond_i32, { "r", "ri" } },
+ { INDEX_op_setcond_i32, { "r", "r", "ri" } },
+ { INDEX_op_movcond_i32, { "r", "r", "ri", "rZ", "rZ" } },
+
+ { INDEX_op_deposit_i32, { "r", "0", "rZ" } },
+
+ { INDEX_op_muluh_i32, { "r", "r", "r" } },
+ { INDEX_op_mulsh_i32, { "r", "r", "r" } },
+
+#if TCG_TARGET_REG_BITS == 64
+ { 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", "r", "rT" } },
+ { INDEX_op_sub_i64, { "r", "rI", "rT" } },
+ { INDEX_op_and_i64, { "r", "r", "ri" } },
+ { INDEX_op_or_i64, { "r", "r", "rU" } },
+ { INDEX_op_xor_i64, { "r", "r", "rU" } },
+ { INDEX_op_andc_i64, { "r", "r", "ri" } },
+ { INDEX_op_orc_i64, { "r", "r", "r" } },
+ { INDEX_op_eqv_i64, { "r", "r", "r" } },
+ { INDEX_op_nand_i64, { "r", "r", "r" } },
+ { INDEX_op_nor_i64, { "r", "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_mul_i64, { "r", "r", "rI" } },
+ { INDEX_op_div_i64, { "r", "r", "r" } },
+ { INDEX_op_divu_i64, { "r", "r", "r" } },
+
+ { INDEX_op_neg_i64, { "r", "r" } },
+ { INDEX_op_not_i64, { "r", "r" } },
+ { INDEX_op_ext8s_i64, { "r", "r" } },
+ { INDEX_op_ext16s_i64, { "r", "r" } },
+ { INDEX_op_ext32s_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", "ri" } },
+ { INDEX_op_setcond_i64, { "r", "r", "ri" } },
+ { INDEX_op_movcond_i64, { "r", "r", "ri", "rZ", "rZ" } },
+
+ { INDEX_op_deposit_i64, { "r", "0", "rZ" } },
+
+ { INDEX_op_mulsh_i64, { "r", "r", "r" } },
+ { INDEX_op_muluh_i64, { "r", "r", "r" } },
+#endif
+
+#if TCG_TARGET_REG_BITS == 32
+ { INDEX_op_brcond2_i32, { "r", "r", "ri", "ri" } },
+ { INDEX_op_setcond2_i32, { "r", "r", "r", "ri", "ri" } },
+#endif
+
+#if TCG_TARGET_REG_BITS == 64
+ { INDEX_op_add2_i64, { "r", "r", "r", "r", "rI", "rZM" } },
+ { INDEX_op_sub2_i64, { "r", "r", "rI", "rZM", "r", "r" } },
+#else
+ { INDEX_op_add2_i32, { "r", "r", "r", "r", "rI", "rZM" } },
+ { INDEX_op_sub2_i32, { "r", "r", "rI", "rZM", "r", "r" } },
+#endif
+
+#if TCG_TARGET_REG_BITS == 64
+ { INDEX_op_qemu_ld_i32, { "r", "L" } },
+ { INDEX_op_qemu_st_i32, { "S", "S" } },
+ { INDEX_op_qemu_ld_i64, { "r", "L" } },
+ { INDEX_op_qemu_st_i64, { "S", "S" } },
+#elif TARGET_LONG_BITS == 32
+ { INDEX_op_qemu_ld_i32, { "r", "L" } },
+ { INDEX_op_qemu_st_i32, { "S", "S" } },
+ { INDEX_op_qemu_ld_i64, { "L", "L", "L" } },
+ { INDEX_op_qemu_st_i64, { "S", "S", "S" } },
+#else
+ { INDEX_op_qemu_ld_i32, { "r", "L", "L" } },
+ { INDEX_op_qemu_st_i32, { "S", "S", "S" } },
+ { INDEX_op_qemu_ld_i64, { "L", "L", "L", "L" } },
+ { INDEX_op_qemu_st_i64, { "S", "S", "S", "S" } },
+#endif
+
+ { -1 },
+};
+
+static void tcg_target_init(TCGContext *s)
+{
+ unsigned long hwcap = qemu_getauxval(AT_HWCAP);
+ if (hwcap & PPC_FEATURE_ARCH_2_06) {
+ have_isa_2_06 = true;
+ }
+
+ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
+ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
+ tcg_regset_set32(tcg_target_call_clobber_regs, 0,
+ (1 << TCG_REG_R0) |
+ (1 << TCG_REG_R2) |
+ (1 << TCG_REG_R3) |
+ (1 << TCG_REG_R4) |
+ (1 << TCG_REG_R5) |
+ (1 << TCG_REG_R6) |
+ (1 << TCG_REG_R7) |
+ (1 << TCG_REG_R8) |
+ (1 << TCG_REG_R9) |
+ (1 << TCG_REG_R10) |
+ (1 << TCG_REG_R11) |
+ (1 << TCG_REG_R12));
+
+ tcg_regset_clear(s->reserved_regs);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); /* tcg temp */
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R1); /* stack pointer */
+#if defined(_CALL_SYSV)
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R2); /* toc pointer */
+#endif
+#if defined(_CALL_SYSV) || TCG_TARGET_REG_BITS == 64
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13); /* thread pointer */
+#endif
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP1); /* mem temp */
+ if (USE_REG_RA) {
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_RA); /* return addr */
+ }
+
+ tcg_add_target_add_op_defs(ppc_op_defs);
+}
+
+#ifdef __ELF__
+typedef struct {
+ DebugFrameCIE cie;
+ DebugFrameFDEHeader fde;
+ uint8_t fde_def_cfa[4];
+ uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2 + 3];
+} DebugFrame;
+
+/* We're expecting a 2 byte uleb128 encoded value. */
+QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14));
+
+#if TCG_TARGET_REG_BITS == 64
+# define ELF_HOST_MACHINE EM_PPC64
+#else
+# define ELF_HOST_MACHINE EM_PPC
+#endif
+
+static DebugFrame debug_frame = {
+ .cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */
+ .cie.id = -1,
+ .cie.version = 1,
+ .cie.code_align = 1,
+ .cie.data_align = (-SZR & 0x7f), /* sleb128 -SZR */
+ .cie.return_column = 65,
+
+ /* Total FDE size does not include the "len" member. */
+ .fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, fde.cie_offset),
+
+ .fde_def_cfa = {
+ 12, TCG_REG_R1, /* DW_CFA_def_cfa r1, ... */
+ (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
+ (FRAME_SIZE >> 7)
+ },
+ .fde_reg_ofs = {
+ /* DW_CFA_offset_extended_sf, lr, LR_OFFSET */
+ 0x11, 65, (LR_OFFSET / -SZR) & 0x7f,
+ }
+};
+
+void tcg_register_jit(void *buf, size_t buf_size)
+{
+ uint8_t *p = &debug_frame.fde_reg_ofs[3];
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i, p += 2) {
+ p[0] = 0x80 + tcg_target_callee_save_regs[i];
+ p[1] = (FRAME_SIZE - (REG_SAVE_BOT + i * SZR)) / SZR;
+ }
+
+ debug_frame.fde.func_start = (uintptr_t)buf;
+ debug_frame.fde.func_len = buf_size;
+
+ tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
+}
+#endif /* __ELF__ */
+
+static size_t dcache_bsize = 16;
+static size_t icache_bsize = 16;
+
+void flush_icache_range(uintptr_t start, uintptr_t stop)
+{
+ uintptr_t p, start1, stop1;
+ size_t dsize = dcache_bsize;
+ size_t isize = icache_bsize;
+
+ start1 = start & ~(dsize - 1);
+ stop1 = (stop + dsize - 1) & ~(dsize - 1);
+ for (p = start1; p < stop1; p += dsize) {
+ asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
+ }
+ asm volatile ("sync" : : : "memory");
+
+ start &= start & ~(isize - 1);
+ stop1 = (stop + isize - 1) & ~(isize - 1);
+ for (p = start1; p < stop1; p += isize) {
+ asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
+ }
+ asm volatile ("sync" : : : "memory");
+ asm volatile ("isync" : : : "memory");
+}
+
+#if defined _AIX
+#include <sys/systemcfg.h>
+
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+ icache_bsize = _system_configuration.icache_line;
+ dcache_bsize = _system_configuration.dcache_line;
+}
+
+#elif defined __linux__
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+ unsigned long dsize = qemu_getauxval(AT_DCACHEBSIZE);
+ unsigned long isize = qemu_getauxval(AT_ICACHEBSIZE);
+
+ if (dsize == 0 || isize == 0) {
+ if (dsize == 0) {
+ fprintf(stderr, "getauxval AT_DCACHEBSIZE failed\n");
+ }
+ if (isize == 0) {
+ fprintf(stderr, "getauxval AT_ICACHEBSIZE failed\n");
+ }
+ exit(1);
+ }
+ dcache_bsize = dsize;
+ icache_bsize = isize;
+}
+
+#elif defined __APPLE__
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+ size_t len;
+ unsigned cacheline;
+ int name[2] = { CTL_HW, HW_CACHELINE };
+
+ len = sizeof(cacheline);
+ if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {
+ perror("sysctl CTL_HW HW_CACHELINE failed");
+ exit(1);
+ }
+ dcache_bsize = cacheline;
+ icache_bsize = cacheline;
+}
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+ size_t len = 4;
+ unsigned cacheline;
+
+ if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
+ fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ dcache_bsize = cacheline;
+ icache_bsize = cacheline;
+}
+#endif
Code Review / kvmfornfv.git / blobdiff