14776ab5a1
Preparation for collapsing the two byte swaps, adjust_endianness and handle_bswap, along the I/O path. Target dependant attributes are conditionalized upon NEED_CPU_H. Signed-off-by: Tony Nguyen <tony.nguyen@bt.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <81d9cd7d7f5aaadfa772d6c48ecee834e9cf7882.1566466906.git.tony.nguyen@bt.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2925 lines
92 KiB
C
2925 lines
92 KiB
C
/*
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* Initial TCG Implementation for aarch64
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*
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* Copyright (c) 2013 Huawei Technologies Duesseldorf GmbH
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* Written by Claudio Fontana
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version.
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*
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* See the COPYING file in the top-level directory for details.
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*/
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#include "tcg-pool.inc.c"
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#include "qemu/bitops.h"
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/* We're going to re-use TCGType in setting of the SF bit, which controls
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the size of the operation performed. If we know the values match, it
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makes things much cleaner. */
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QEMU_BUILD_BUG_ON(TCG_TYPE_I32 != 0 || TCG_TYPE_I64 != 1);
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#ifdef CONFIG_DEBUG_TCG
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static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
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"x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
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"x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
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"x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23",
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"x24", "x25", "x26", "x27", "x28", "fp", "x30", "sp",
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"v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7",
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"v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15",
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"v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23",
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"v24", "v25", "v26", "v27", "v28", "fp", "v30", "v31",
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};
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#endif /* CONFIG_DEBUG_TCG */
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static const int tcg_target_reg_alloc_order[] = {
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TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23,
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TCG_REG_X24, TCG_REG_X25, TCG_REG_X26, TCG_REG_X27,
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TCG_REG_X28, /* we will reserve this for guest_base if configured */
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TCG_REG_X8, TCG_REG_X9, TCG_REG_X10, TCG_REG_X11,
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TCG_REG_X12, TCG_REG_X13, TCG_REG_X14, TCG_REG_X15,
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TCG_REG_X16, TCG_REG_X17,
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TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3,
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TCG_REG_X4, TCG_REG_X5, TCG_REG_X6, TCG_REG_X7,
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/* X18 reserved by system */
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/* X19 reserved for AREG0 */
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/* X29 reserved as fp */
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/* X30 reserved as temporary */
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TCG_REG_V0, TCG_REG_V1, TCG_REG_V2, TCG_REG_V3,
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TCG_REG_V4, TCG_REG_V5, TCG_REG_V6, TCG_REG_V7,
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/* V8 - V15 are call-saved, and skipped. */
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TCG_REG_V16, TCG_REG_V17, TCG_REG_V18, TCG_REG_V19,
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TCG_REG_V20, TCG_REG_V21, TCG_REG_V22, TCG_REG_V23,
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TCG_REG_V24, TCG_REG_V25, TCG_REG_V26, TCG_REG_V27,
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TCG_REG_V28, TCG_REG_V29, TCG_REG_V30, TCG_REG_V31,
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};
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static const int tcg_target_call_iarg_regs[8] = {
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TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3,
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TCG_REG_X4, TCG_REG_X5, TCG_REG_X6, TCG_REG_X7
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};
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static const int tcg_target_call_oarg_regs[1] = {
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TCG_REG_X0
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};
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#define TCG_REG_TMP TCG_REG_X30
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#define TCG_VEC_TMP TCG_REG_V31
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#ifndef CONFIG_SOFTMMU
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/* Note that XZR cannot be encoded in the address base register slot,
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as that actaully encodes SP. So if we need to zero-extend the guest
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address, via the address index register slot, we need to load even
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a zero guest base into a register. */
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#define USE_GUEST_BASE (guest_base != 0 || TARGET_LONG_BITS == 32)
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#define TCG_REG_GUEST_BASE TCG_REG_X28
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#endif
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static inline bool reloc_pc26(tcg_insn_unit *code_ptr, tcg_insn_unit *target)
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{
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ptrdiff_t offset = target - code_ptr;
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if (offset == sextract64(offset, 0, 26)) {
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/* read instruction, mask away previous PC_REL26 parameter contents,
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set the proper offset, then write back the instruction. */
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*code_ptr = deposit32(*code_ptr, 0, 26, offset);
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return true;
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}
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return false;
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}
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static inline bool reloc_pc19(tcg_insn_unit *code_ptr, tcg_insn_unit *target)
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{
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ptrdiff_t offset = target - code_ptr;
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if (offset == sextract64(offset, 0, 19)) {
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*code_ptr = deposit32(*code_ptr, 5, 19, offset);
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return true;
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}
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return false;
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}
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static inline bool patch_reloc(tcg_insn_unit *code_ptr, int type,
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intptr_t value, intptr_t addend)
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{
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tcg_debug_assert(addend == 0);
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switch (type) {
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case R_AARCH64_JUMP26:
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case R_AARCH64_CALL26:
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return reloc_pc26(code_ptr, (tcg_insn_unit *)value);
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case R_AARCH64_CONDBR19:
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return reloc_pc19(code_ptr, (tcg_insn_unit *)value);
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default:
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g_assert_not_reached();
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}
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}
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#define TCG_CT_CONST_AIMM 0x100
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#define TCG_CT_CONST_LIMM 0x200
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#define TCG_CT_CONST_ZERO 0x400
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#define TCG_CT_CONST_MONE 0x800
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#define TCG_CT_CONST_ORRI 0x1000
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#define TCG_CT_CONST_ANDI 0x2000
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/* parse target specific constraints */
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static const char *target_parse_constraint(TCGArgConstraint *ct,
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const char *ct_str, TCGType type)
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{
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switch (*ct_str++) {
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case 'r': /* general registers */
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ct->ct |= TCG_CT_REG;
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ct->u.regs |= 0xffffffffu;
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break;
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case 'w': /* advsimd registers */
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ct->ct |= TCG_CT_REG;
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ct->u.regs |= 0xffffffff00000000ull;
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break;
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case 'l': /* qemu_ld / qemu_st address, data_reg */
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ct->ct |= TCG_CT_REG;
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ct->u.regs = 0xffffffffu;
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#ifdef CONFIG_SOFTMMU
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/* x0 and x1 will be overwritten when reading the tlb entry,
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and x2, and x3 for helper args, better to avoid using them. */
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_X0);
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_X1);
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_X2);
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_X3);
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#endif
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break;
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case 'A': /* Valid for arithmetic immediate (positive or negative). */
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ct->ct |= TCG_CT_CONST_AIMM;
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break;
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case 'L': /* Valid for logical immediate. */
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ct->ct |= TCG_CT_CONST_LIMM;
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break;
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case 'M': /* minus one */
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ct->ct |= TCG_CT_CONST_MONE;
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break;
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case 'O': /* vector orr/bic immediate */
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ct->ct |= TCG_CT_CONST_ORRI;
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break;
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case 'N': /* vector orr/bic immediate, inverted */
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ct->ct |= TCG_CT_CONST_ANDI;
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break;
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case 'Z': /* zero */
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ct->ct |= TCG_CT_CONST_ZERO;
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break;
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default:
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return NULL;
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}
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return ct_str;
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}
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/* Match a constant valid for addition (12-bit, optionally shifted). */
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static inline bool is_aimm(uint64_t val)
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{
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return (val & ~0xfff) == 0 || (val & ~0xfff000) == 0;
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}
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/* Match a constant valid for logical operations. */
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static inline bool is_limm(uint64_t val)
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{
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/* Taking a simplified view of the logical immediates for now, ignoring
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the replication that can happen across the field. Match bit patterns
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of the forms
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0....01....1
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0..01..10..0
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and their inverses. */
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/* Make things easier below, by testing the form with msb clear. */
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if ((int64_t)val < 0) {
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val = ~val;
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}
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if (val == 0) {
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return false;
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}
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val += val & -val;
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return (val & (val - 1)) == 0;
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}
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/* Return true if v16 is a valid 16-bit shifted immediate. */
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static bool is_shimm16(uint16_t v16, int *cmode, int *imm8)
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{
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if (v16 == (v16 & 0xff)) {
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*cmode = 0x8;
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*imm8 = v16 & 0xff;
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return true;
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} else if (v16 == (v16 & 0xff00)) {
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*cmode = 0xa;
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*imm8 = v16 >> 8;
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return true;
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}
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return false;
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}
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/* Return true if v32 is a valid 32-bit shifted immediate. */
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static bool is_shimm32(uint32_t v32, int *cmode, int *imm8)
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{
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if (v32 == (v32 & 0xff)) {
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*cmode = 0x0;
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*imm8 = v32 & 0xff;
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return true;
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} else if (v32 == (v32 & 0xff00)) {
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*cmode = 0x2;
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*imm8 = (v32 >> 8) & 0xff;
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return true;
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} else if (v32 == (v32 & 0xff0000)) {
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*cmode = 0x4;
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*imm8 = (v32 >> 16) & 0xff;
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return true;
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} else if (v32 == (v32 & 0xff000000)) {
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*cmode = 0x6;
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*imm8 = v32 >> 24;
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return true;
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}
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return false;
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}
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/* Return true if v32 is a valid 32-bit shifting ones immediate. */
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static bool is_soimm32(uint32_t v32, int *cmode, int *imm8)
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{
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if ((v32 & 0xffff00ff) == 0xff) {
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*cmode = 0xc;
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*imm8 = (v32 >> 8) & 0xff;
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return true;
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} else if ((v32 & 0xff00ffff) == 0xffff) {
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*cmode = 0xd;
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*imm8 = (v32 >> 16) & 0xff;
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return true;
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}
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return false;
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}
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/* Return true if v32 is a valid float32 immediate. */
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static bool is_fimm32(uint32_t v32, int *cmode, int *imm8)
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{
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if (extract32(v32, 0, 19) == 0
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&& (extract32(v32, 25, 6) == 0x20
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|| extract32(v32, 25, 6) == 0x1f)) {
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*cmode = 0xf;
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*imm8 = (extract32(v32, 31, 1) << 7)
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| (extract32(v32, 25, 1) << 6)
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| extract32(v32, 19, 6);
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return true;
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}
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return false;
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}
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/* Return true if v64 is a valid float64 immediate. */
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static bool is_fimm64(uint64_t v64, int *cmode, int *imm8)
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{
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if (extract64(v64, 0, 48) == 0
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&& (extract64(v64, 54, 9) == 0x100
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|| extract64(v64, 54, 9) == 0x0ff)) {
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*cmode = 0xf;
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*imm8 = (extract64(v64, 63, 1) << 7)
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| (extract64(v64, 54, 1) << 6)
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| extract64(v64, 48, 6);
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return true;
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}
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return false;
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}
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/*
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* Return non-zero if v32 can be formed by MOVI+ORR.
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* Place the parameters for MOVI in (cmode, imm8).
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* Return the cmode for ORR; the imm8 can be had via extraction from v32.
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*/
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static int is_shimm32_pair(uint32_t v32, int *cmode, int *imm8)
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{
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int i;
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for (i = 6; i > 0; i -= 2) {
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/* Mask out one byte we can add with ORR. */
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uint32_t tmp = v32 & ~(0xffu << (i * 4));
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if (is_shimm32(tmp, cmode, imm8) ||
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is_soimm32(tmp, cmode, imm8)) {
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break;
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}
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}
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return i;
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}
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/* Return true if V is a valid 16-bit or 32-bit shifted immediate. */
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static bool is_shimm1632(uint32_t v32, int *cmode, int *imm8)
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{
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if (v32 == deposit32(v32, 16, 16, v32)) {
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return is_shimm16(v32, cmode, imm8);
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} else {
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return is_shimm32(v32, cmode, imm8);
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}
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}
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static int tcg_target_const_match(tcg_target_long val, TCGType type,
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const TCGArgConstraint *arg_ct)
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{
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int ct = arg_ct->ct;
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if (ct & TCG_CT_CONST) {
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return 1;
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}
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if (type == TCG_TYPE_I32) {
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val = (int32_t)val;
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}
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if ((ct & TCG_CT_CONST_AIMM) && (is_aimm(val) || is_aimm(-val))) {
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return 1;
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}
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if ((ct & TCG_CT_CONST_LIMM) && is_limm(val)) {
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return 1;
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}
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if ((ct & TCG_CT_CONST_ZERO) && val == 0) {
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return 1;
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}
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if ((ct & TCG_CT_CONST_MONE) && val == -1) {
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return 1;
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}
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switch (ct & (TCG_CT_CONST_ORRI | TCG_CT_CONST_ANDI)) {
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case 0:
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break;
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case TCG_CT_CONST_ANDI:
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val = ~val;
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/* fallthru */
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case TCG_CT_CONST_ORRI:
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if (val == deposit64(val, 32, 32, val)) {
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int cmode, imm8;
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return is_shimm1632(val, &cmode, &imm8);
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}
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break;
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default:
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/* Both bits should not be set for the same insn. */
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g_assert_not_reached();
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}
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return 0;
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}
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enum aarch64_cond_code {
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COND_EQ = 0x0,
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COND_NE = 0x1,
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COND_CS = 0x2, /* Unsigned greater or equal */
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COND_HS = COND_CS, /* ALIAS greater or equal */
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COND_CC = 0x3, /* Unsigned less than */
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COND_LO = COND_CC, /* ALIAS Lower */
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COND_MI = 0x4, /* Negative */
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COND_PL = 0x5, /* Zero or greater */
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COND_VS = 0x6, /* Overflow */
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COND_VC = 0x7, /* No overflow */
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COND_HI = 0x8, /* Unsigned greater than */
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COND_LS = 0x9, /* Unsigned less or equal */
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COND_GE = 0xa,
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COND_LT = 0xb,
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COND_GT = 0xc,
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COND_LE = 0xd,
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COND_AL = 0xe,
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COND_NV = 0xf, /* behaves like COND_AL here */
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};
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static const enum aarch64_cond_code tcg_cond_to_aarch64[] = {
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[TCG_COND_EQ] = COND_EQ,
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[TCG_COND_NE] = COND_NE,
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[TCG_COND_LT] = COND_LT,
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[TCG_COND_GE] = COND_GE,
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[TCG_COND_LE] = COND_LE,
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[TCG_COND_GT] = COND_GT,
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/* unsigned */
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[TCG_COND_LTU] = COND_LO,
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[TCG_COND_GTU] = COND_HI,
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[TCG_COND_GEU] = COND_HS,
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[TCG_COND_LEU] = COND_LS,
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};
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typedef enum {
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LDST_ST = 0, /* store */
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LDST_LD = 1, /* load */
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LDST_LD_S_X = 2, /* load and sign-extend into Xt */
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LDST_LD_S_W = 3, /* load and sign-extend into Wt */
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} AArch64LdstType;
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/* We encode the format of the insn into the beginning of the name, so that
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we can have the preprocessor help "typecheck" the insn vs the output
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function. Arm didn't provide us with nice names for the formats, so we
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use the section number of the architecture reference manual in which the
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instruction group is described. */
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typedef enum {
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/* Compare and branch (immediate). */
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I3201_CBZ = 0x34000000,
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I3201_CBNZ = 0x35000000,
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/* Conditional branch (immediate). */
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I3202_B_C = 0x54000000,
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/* Unconditional branch (immediate). */
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I3206_B = 0x14000000,
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I3206_BL = 0x94000000,
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/* Unconditional branch (register). */
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I3207_BR = 0xd61f0000,
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I3207_BLR = 0xd63f0000,
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I3207_RET = 0xd65f0000,
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/* AdvSIMD load/store single structure. */
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I3303_LD1R = 0x0d40c000,
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/* Load literal for loading the address at pc-relative offset */
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I3305_LDR = 0x58000000,
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I3305_LDR_v64 = 0x5c000000,
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I3305_LDR_v128 = 0x9c000000,
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|
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/* Load/store register. Described here as 3.3.12, but the helper
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that emits them can transform to 3.3.10 or 3.3.13. */
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I3312_STRB = 0x38000000 | LDST_ST << 22 | MO_8 << 30,
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I3312_STRH = 0x38000000 | LDST_ST << 22 | MO_16 << 30,
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I3312_STRW = 0x38000000 | LDST_ST << 22 | MO_32 << 30,
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I3312_STRX = 0x38000000 | LDST_ST << 22 | MO_64 << 30,
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|
|
|
I3312_LDRB = 0x38000000 | LDST_LD << 22 | MO_8 << 30,
|
|
I3312_LDRH = 0x38000000 | LDST_LD << 22 | MO_16 << 30,
|
|
I3312_LDRW = 0x38000000 | LDST_LD << 22 | MO_32 << 30,
|
|
I3312_LDRX = 0x38000000 | LDST_LD << 22 | MO_64 << 30,
|
|
|
|
I3312_LDRSBW = 0x38000000 | LDST_LD_S_W << 22 | MO_8 << 30,
|
|
I3312_LDRSHW = 0x38000000 | LDST_LD_S_W << 22 | MO_16 << 30,
|
|
|
|
I3312_LDRSBX = 0x38000000 | LDST_LD_S_X << 22 | MO_8 << 30,
|
|
I3312_LDRSHX = 0x38000000 | LDST_LD_S_X << 22 | MO_16 << 30,
|
|
I3312_LDRSWX = 0x38000000 | LDST_LD_S_X << 22 | MO_32 << 30,
|
|
|
|
I3312_LDRVS = 0x3c000000 | LDST_LD << 22 | MO_32 << 30,
|
|
I3312_STRVS = 0x3c000000 | LDST_ST << 22 | MO_32 << 30,
|
|
|
|
I3312_LDRVD = 0x3c000000 | LDST_LD << 22 | MO_64 << 30,
|
|
I3312_STRVD = 0x3c000000 | LDST_ST << 22 | MO_64 << 30,
|
|
|
|
I3312_LDRVQ = 0x3c000000 | 3 << 22 | 0 << 30,
|
|
I3312_STRVQ = 0x3c000000 | 2 << 22 | 0 << 30,
|
|
|
|
I3312_TO_I3310 = 0x00200800,
|
|
I3312_TO_I3313 = 0x01000000,
|
|
|
|
/* Load/store register pair instructions. */
|
|
I3314_LDP = 0x28400000,
|
|
I3314_STP = 0x28000000,
|
|
|
|
/* Add/subtract immediate instructions. */
|
|
I3401_ADDI = 0x11000000,
|
|
I3401_ADDSI = 0x31000000,
|
|
I3401_SUBI = 0x51000000,
|
|
I3401_SUBSI = 0x71000000,
|
|
|
|
/* Bitfield instructions. */
|
|
I3402_BFM = 0x33000000,
|
|
I3402_SBFM = 0x13000000,
|
|
I3402_UBFM = 0x53000000,
|
|
|
|
/* Extract instruction. */
|
|
I3403_EXTR = 0x13800000,
|
|
|
|
/* Logical immediate instructions. */
|
|
I3404_ANDI = 0x12000000,
|
|
I3404_ORRI = 0x32000000,
|
|
I3404_EORI = 0x52000000,
|
|
|
|
/* Move wide immediate instructions. */
|
|
I3405_MOVN = 0x12800000,
|
|
I3405_MOVZ = 0x52800000,
|
|
I3405_MOVK = 0x72800000,
|
|
|
|
/* PC relative addressing instructions. */
|
|
I3406_ADR = 0x10000000,
|
|
I3406_ADRP = 0x90000000,
|
|
|
|
/* Add/subtract shifted register instructions (without a shift). */
|
|
I3502_ADD = 0x0b000000,
|
|
I3502_ADDS = 0x2b000000,
|
|
I3502_SUB = 0x4b000000,
|
|
I3502_SUBS = 0x6b000000,
|
|
|
|
/* Add/subtract shifted register instructions (with a shift). */
|
|
I3502S_ADD_LSL = I3502_ADD,
|
|
|
|
/* Add/subtract with carry instructions. */
|
|
I3503_ADC = 0x1a000000,
|
|
I3503_SBC = 0x5a000000,
|
|
|
|
/* Conditional select instructions. */
|
|
I3506_CSEL = 0x1a800000,
|
|
I3506_CSINC = 0x1a800400,
|
|
I3506_CSINV = 0x5a800000,
|
|
I3506_CSNEG = 0x5a800400,
|
|
|
|
/* Data-processing (1 source) instructions. */
|
|
I3507_CLZ = 0x5ac01000,
|
|
I3507_RBIT = 0x5ac00000,
|
|
I3507_REV16 = 0x5ac00400,
|
|
I3507_REV32 = 0x5ac00800,
|
|
I3507_REV64 = 0x5ac00c00,
|
|
|
|
/* Data-processing (2 source) instructions. */
|
|
I3508_LSLV = 0x1ac02000,
|
|
I3508_LSRV = 0x1ac02400,
|
|
I3508_ASRV = 0x1ac02800,
|
|
I3508_RORV = 0x1ac02c00,
|
|
I3508_SMULH = 0x9b407c00,
|
|
I3508_UMULH = 0x9bc07c00,
|
|
I3508_UDIV = 0x1ac00800,
|
|
I3508_SDIV = 0x1ac00c00,
|
|
|
|
/* Data-processing (3 source) instructions. */
|
|
I3509_MADD = 0x1b000000,
|
|
I3509_MSUB = 0x1b008000,
|
|
|
|
/* Logical shifted register instructions (without a shift). */
|
|
I3510_AND = 0x0a000000,
|
|
I3510_BIC = 0x0a200000,
|
|
I3510_ORR = 0x2a000000,
|
|
I3510_ORN = 0x2a200000,
|
|
I3510_EOR = 0x4a000000,
|
|
I3510_EON = 0x4a200000,
|
|
I3510_ANDS = 0x6a000000,
|
|
|
|
/* Logical shifted register instructions (with a shift). */
|
|
I3502S_AND_LSR = I3510_AND | (1 << 22),
|
|
|
|
/* AdvSIMD copy */
|
|
I3605_DUP = 0x0e000400,
|
|
I3605_INS = 0x4e001c00,
|
|
I3605_UMOV = 0x0e003c00,
|
|
|
|
/* AdvSIMD modified immediate */
|
|
I3606_MOVI = 0x0f000400,
|
|
I3606_MVNI = 0x2f000400,
|
|
I3606_BIC = 0x2f001400,
|
|
I3606_ORR = 0x0f001400,
|
|
|
|
/* AdvSIMD shift by immediate */
|
|
I3614_SSHR = 0x0f000400,
|
|
I3614_SSRA = 0x0f001400,
|
|
I3614_SHL = 0x0f005400,
|
|
I3614_USHR = 0x2f000400,
|
|
I3614_USRA = 0x2f001400,
|
|
|
|
/* AdvSIMD three same. */
|
|
I3616_ADD = 0x0e208400,
|
|
I3616_AND = 0x0e201c00,
|
|
I3616_BIC = 0x0e601c00,
|
|
I3616_BIF = 0x2ee01c00,
|
|
I3616_BIT = 0x2ea01c00,
|
|
I3616_BSL = 0x2e601c00,
|
|
I3616_EOR = 0x2e201c00,
|
|
I3616_MUL = 0x0e209c00,
|
|
I3616_ORR = 0x0ea01c00,
|
|
I3616_ORN = 0x0ee01c00,
|
|
I3616_SUB = 0x2e208400,
|
|
I3616_CMGT = 0x0e203400,
|
|
I3616_CMGE = 0x0e203c00,
|
|
I3616_CMTST = 0x0e208c00,
|
|
I3616_CMHI = 0x2e203400,
|
|
I3616_CMHS = 0x2e203c00,
|
|
I3616_CMEQ = 0x2e208c00,
|
|
I3616_SMAX = 0x0e206400,
|
|
I3616_SMIN = 0x0e206c00,
|
|
I3616_SSHL = 0x0e204400,
|
|
I3616_SQADD = 0x0e200c00,
|
|
I3616_SQSUB = 0x0e202c00,
|
|
I3616_UMAX = 0x2e206400,
|
|
I3616_UMIN = 0x2e206c00,
|
|
I3616_UQADD = 0x2e200c00,
|
|
I3616_UQSUB = 0x2e202c00,
|
|
I3616_USHL = 0x2e204400,
|
|
|
|
/* AdvSIMD two-reg misc. */
|
|
I3617_CMGT0 = 0x0e208800,
|
|
I3617_CMEQ0 = 0x0e209800,
|
|
I3617_CMLT0 = 0x0e20a800,
|
|
I3617_CMGE0 = 0x2e208800,
|
|
I3617_CMLE0 = 0x2e20a800,
|
|
I3617_NOT = 0x2e205800,
|
|
I3617_ABS = 0x0e20b800,
|
|
I3617_NEG = 0x2e20b800,
|
|
|
|
/* System instructions. */
|
|
NOP = 0xd503201f,
|
|
DMB_ISH = 0xd50338bf,
|
|
DMB_LD = 0x00000100,
|
|
DMB_ST = 0x00000200,
|
|
} AArch64Insn;
|
|
|
|
static inline uint32_t tcg_in32(TCGContext *s)
|
|
{
|
|
uint32_t v = *(uint32_t *)s->code_ptr;
|
|
return v;
|
|
}
|
|
|
|
/* Emit an opcode with "type-checking" of the format. */
|
|
#define tcg_out_insn(S, FMT, OP, ...) \
|
|
glue(tcg_out_insn_,FMT)(S, glue(glue(glue(I,FMT),_),OP), ## __VA_ARGS__)
|
|
|
|
static void tcg_out_insn_3303(TCGContext *s, AArch64Insn insn, bool q,
|
|
TCGReg rt, TCGReg rn, unsigned size)
|
|
{
|
|
tcg_out32(s, insn | (rt & 0x1f) | (rn << 5) | (size << 10) | (q << 30));
|
|
}
|
|
|
|
static void tcg_out_insn_3305(TCGContext *s, AArch64Insn insn,
|
|
int imm19, TCGReg rt)
|
|
{
|
|
tcg_out32(s, insn | (imm19 & 0x7ffff) << 5 | rt);
|
|
}
|
|
|
|
static void tcg_out_insn_3201(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rt, int imm19)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | (imm19 & 0x7ffff) << 5 | rt);
|
|
}
|
|
|
|
static void tcg_out_insn_3202(TCGContext *s, AArch64Insn insn,
|
|
TCGCond c, int imm19)
|
|
{
|
|
tcg_out32(s, insn | tcg_cond_to_aarch64[c] | (imm19 & 0x7ffff) << 5);
|
|
}
|
|
|
|
static void tcg_out_insn_3206(TCGContext *s, AArch64Insn insn, int imm26)
|
|
{
|
|
tcg_out32(s, insn | (imm26 & 0x03ffffff));
|
|
}
|
|
|
|
static void tcg_out_insn_3207(TCGContext *s, AArch64Insn insn, TCGReg rn)
|
|
{
|
|
tcg_out32(s, insn | rn << 5);
|
|
}
|
|
|
|
static void tcg_out_insn_3314(TCGContext *s, AArch64Insn insn,
|
|
TCGReg r1, TCGReg r2, TCGReg rn,
|
|
tcg_target_long ofs, bool pre, bool w)
|
|
{
|
|
insn |= 1u << 31; /* ext */
|
|
insn |= pre << 24;
|
|
insn |= w << 23;
|
|
|
|
tcg_debug_assert(ofs >= -0x200 && ofs < 0x200 && (ofs & 7) == 0);
|
|
insn |= (ofs & (0x7f << 3)) << (15 - 3);
|
|
|
|
tcg_out32(s, insn | r2 << 10 | rn << 5 | r1);
|
|
}
|
|
|
|
static void tcg_out_insn_3401(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, uint64_t aimm)
|
|
{
|
|
if (aimm > 0xfff) {
|
|
tcg_debug_assert((aimm & 0xfff) == 0);
|
|
aimm >>= 12;
|
|
tcg_debug_assert(aimm <= 0xfff);
|
|
aimm |= 1 << 12; /* apply LSL 12 */
|
|
}
|
|
tcg_out32(s, insn | ext << 31 | aimm << 10 | rn << 5 | rd);
|
|
}
|
|
|
|
/* This function can be used for both 3.4.2 (Bitfield) and 3.4.4
|
|
(Logical immediate). Both insn groups have N, IMMR and IMMS fields
|
|
that feed the DecodeBitMasks pseudo function. */
|
|
static void tcg_out_insn_3402(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, int n, int immr, int imms)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | n << 22 | immr << 16 | imms << 10
|
|
| rn << 5 | rd);
|
|
}
|
|
|
|
#define tcg_out_insn_3404 tcg_out_insn_3402
|
|
|
|
static void tcg_out_insn_3403(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, TCGReg rm, int imms)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | ext << 22 | rm << 16 | imms << 10
|
|
| rn << 5 | rd);
|
|
}
|
|
|
|
/* This function is used for the Move (wide immediate) instruction group.
|
|
Note that SHIFT is a full shift count, not the 2 bit HW field. */
|
|
static void tcg_out_insn_3405(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, uint16_t half, unsigned shift)
|
|
{
|
|
tcg_debug_assert((shift & ~0x30) == 0);
|
|
tcg_out32(s, insn | ext << 31 | shift << (21 - 4) | half << 5 | rd);
|
|
}
|
|
|
|
static void tcg_out_insn_3406(TCGContext *s, AArch64Insn insn,
|
|
TCGReg rd, int64_t disp)
|
|
{
|
|
tcg_out32(s, insn | (disp & 3) << 29 | (disp & 0x1ffffc) << (5 - 2) | rd);
|
|
}
|
|
|
|
/* This function is for both 3.5.2 (Add/Subtract shifted register), for
|
|
the rare occasion when we actually want to supply a shift amount. */
|
|
static inline void tcg_out_insn_3502S(TCGContext *s, AArch64Insn insn,
|
|
TCGType ext, TCGReg rd, TCGReg rn,
|
|
TCGReg rm, int imm6)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | rm << 16 | imm6 << 10 | rn << 5 | rd);
|
|
}
|
|
|
|
/* This function is for 3.5.2 (Add/subtract shifted register),
|
|
and 3.5.10 (Logical shifted register), for the vast majorty of cases
|
|
when we don't want to apply a shift. Thus it can also be used for
|
|
3.5.3 (Add/subtract with carry) and 3.5.8 (Data processing 2 source). */
|
|
static void tcg_out_insn_3502(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, TCGReg rm)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | rm << 16 | rn << 5 | rd);
|
|
}
|
|
|
|
#define tcg_out_insn_3503 tcg_out_insn_3502
|
|
#define tcg_out_insn_3508 tcg_out_insn_3502
|
|
#define tcg_out_insn_3510 tcg_out_insn_3502
|
|
|
|
static void tcg_out_insn_3506(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, TCGReg rm, TCGCond c)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | rm << 16 | rn << 5 | rd
|
|
| tcg_cond_to_aarch64[c] << 12);
|
|
}
|
|
|
|
static void tcg_out_insn_3507(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | rn << 5 | rd);
|
|
}
|
|
|
|
static void tcg_out_insn_3509(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, TCGReg rm, TCGReg ra)
|
|
{
|
|
tcg_out32(s, insn | ext << 31 | rm << 16 | ra << 10 | rn << 5 | rd);
|
|
}
|
|
|
|
static void tcg_out_insn_3605(TCGContext *s, AArch64Insn insn, bool q,
|
|
TCGReg rd, TCGReg rn, int dst_idx, int src_idx)
|
|
{
|
|
/* Note that bit 11 set means general register input. Therefore
|
|
we can handle both register sets with one function. */
|
|
tcg_out32(s, insn | q << 30 | (dst_idx << 16) | (src_idx << 11)
|
|
| (rd & 0x1f) | (~rn & 0x20) << 6 | (rn & 0x1f) << 5);
|
|
}
|
|
|
|
static void tcg_out_insn_3606(TCGContext *s, AArch64Insn insn, bool q,
|
|
TCGReg rd, bool op, int cmode, uint8_t imm8)
|
|
{
|
|
tcg_out32(s, insn | q << 30 | op << 29 | cmode << 12 | (rd & 0x1f)
|
|
| (imm8 & 0xe0) << (16 - 5) | (imm8 & 0x1f) << 5);
|
|
}
|
|
|
|
static void tcg_out_insn_3614(TCGContext *s, AArch64Insn insn, bool q,
|
|
TCGReg rd, TCGReg rn, unsigned immhb)
|
|
{
|
|
tcg_out32(s, insn | q << 30 | immhb << 16
|
|
| (rn & 0x1f) << 5 | (rd & 0x1f));
|
|
}
|
|
|
|
static void tcg_out_insn_3616(TCGContext *s, AArch64Insn insn, bool q,
|
|
unsigned size, TCGReg rd, TCGReg rn, TCGReg rm)
|
|
{
|
|
tcg_out32(s, insn | q << 30 | (size << 22) | (rm & 0x1f) << 16
|
|
| (rn & 0x1f) << 5 | (rd & 0x1f));
|
|
}
|
|
|
|
static void tcg_out_insn_3617(TCGContext *s, AArch64Insn insn, bool q,
|
|
unsigned size, TCGReg rd, TCGReg rn)
|
|
{
|
|
tcg_out32(s, insn | q << 30 | (size << 22)
|
|
| (rn & 0x1f) << 5 | (rd & 0x1f));
|
|
}
|
|
|
|
static void tcg_out_insn_3310(TCGContext *s, AArch64Insn insn,
|
|
TCGReg rd, TCGReg base, TCGType ext,
|
|
TCGReg regoff)
|
|
{
|
|
/* Note the AArch64Insn constants above are for C3.3.12. Adjust. */
|
|
tcg_out32(s, insn | I3312_TO_I3310 | regoff << 16 |
|
|
0x4000 | ext << 13 | base << 5 | (rd & 0x1f));
|
|
}
|
|
|
|
static void tcg_out_insn_3312(TCGContext *s, AArch64Insn insn,
|
|
TCGReg rd, TCGReg rn, intptr_t offset)
|
|
{
|
|
tcg_out32(s, insn | (offset & 0x1ff) << 12 | rn << 5 | (rd & 0x1f));
|
|
}
|
|
|
|
static void tcg_out_insn_3313(TCGContext *s, AArch64Insn insn,
|
|
TCGReg rd, TCGReg rn, uintptr_t scaled_uimm)
|
|
{
|
|
/* Note the AArch64Insn constants above are for C3.3.12. Adjust. */
|
|
tcg_out32(s, insn | I3312_TO_I3313 | scaled_uimm << 10
|
|
| rn << 5 | (rd & 0x1f));
|
|
}
|
|
|
|
/* Register to register move using ORR (shifted register with no shift). */
|
|
static void tcg_out_movr(TCGContext *s, TCGType ext, TCGReg rd, TCGReg rm)
|
|
{
|
|
tcg_out_insn(s, 3510, ORR, ext, rd, TCG_REG_XZR, rm);
|
|
}
|
|
|
|
/* Register to register move using ADDI (move to/from SP). */
|
|
static void tcg_out_movr_sp(TCGContext *s, TCGType ext, TCGReg rd, TCGReg rn)
|
|
{
|
|
tcg_out_insn(s, 3401, ADDI, ext, rd, rn, 0);
|
|
}
|
|
|
|
/* This function is used for the Logical (immediate) instruction group.
|
|
The value of LIMM must satisfy IS_LIMM. See the comment above about
|
|
only supporting simplified logical immediates. */
|
|
static void tcg_out_logicali(TCGContext *s, AArch64Insn insn, TCGType ext,
|
|
TCGReg rd, TCGReg rn, uint64_t limm)
|
|
{
|
|
unsigned h, l, r, c;
|
|
|
|
tcg_debug_assert(is_limm(limm));
|
|
|
|
h = clz64(limm);
|
|
l = ctz64(limm);
|
|
if (l == 0) {
|
|
r = 0; /* form 0....01....1 */
|
|
c = ctz64(~limm) - 1;
|
|
if (h == 0) {
|
|
r = clz64(~limm); /* form 1..10..01..1 */
|
|
c += r;
|
|
}
|
|
} else {
|
|
r = 64 - l; /* form 1....10....0 or 0..01..10..0 */
|
|
c = r - h - 1;
|
|
}
|
|
if (ext == TCG_TYPE_I32) {
|
|
r &= 31;
|
|
c &= 31;
|
|
}
|
|
|
|
tcg_out_insn_3404(s, insn, ext, rd, rn, ext, r, c);
|
|
}
|
|
|
|
static void tcg_out_dupi_vec(TCGContext *s, TCGType type,
|
|
TCGReg rd, tcg_target_long v64)
|
|
{
|
|
bool q = type == TCG_TYPE_V128;
|
|
int cmode, imm8, i;
|
|
|
|
/* Test all bytes equal first. */
|
|
if (v64 == dup_const(MO_8, v64)) {
|
|
imm8 = (uint8_t)v64;
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 0, 0xe, imm8);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Test all bytes 0x00 or 0xff second. This can match cases that
|
|
* might otherwise take 2 or 3 insns for MO_16 or MO_32 below.
|
|
*/
|
|
for (i = imm8 = 0; i < 8; i++) {
|
|
uint8_t byte = v64 >> (i * 8);
|
|
if (byte == 0xff) {
|
|
imm8 |= 1 << i;
|
|
} else if (byte != 0) {
|
|
goto fail_bytes;
|
|
}
|
|
}
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 1, 0xe, imm8);
|
|
return;
|
|
fail_bytes:
|
|
|
|
/*
|
|
* Tests for various replications. For each element width, if we
|
|
* cannot find an expansion there's no point checking a larger
|
|
* width because we already know by replication it cannot match.
|
|
*/
|
|
if (v64 == dup_const(MO_16, v64)) {
|
|
uint16_t v16 = v64;
|
|
|
|
if (is_shimm16(v16, &cmode, &imm8)) {
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
if (is_shimm16(~v16, &cmode, &imm8)) {
|
|
tcg_out_insn(s, 3606, MVNI, q, rd, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, all remaining constants can be loaded in two insns:
|
|
* rd = v16 & 0xff, rd |= v16 & 0xff00.
|
|
*/
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 0, 0x8, v16 & 0xff);
|
|
tcg_out_insn(s, 3606, ORR, q, rd, 0, 0xa, v16 >> 8);
|
|
return;
|
|
} else if (v64 == dup_const(MO_32, v64)) {
|
|
uint32_t v32 = v64;
|
|
uint32_t n32 = ~v32;
|
|
|
|
if (is_shimm32(v32, &cmode, &imm8) ||
|
|
is_soimm32(v32, &cmode, &imm8) ||
|
|
is_fimm32(v32, &cmode, &imm8)) {
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
if (is_shimm32(n32, &cmode, &imm8) ||
|
|
is_soimm32(n32, &cmode, &imm8)) {
|
|
tcg_out_insn(s, 3606, MVNI, q, rd, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Restrict the set of constants to those we can load with
|
|
* two instructions. Others we load from the pool.
|
|
*/
|
|
i = is_shimm32_pair(v32, &cmode, &imm8);
|
|
if (i) {
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 0, cmode, imm8);
|
|
tcg_out_insn(s, 3606, ORR, q, rd, 0, i, extract32(v32, i * 4, 8));
|
|
return;
|
|
}
|
|
i = is_shimm32_pair(n32, &cmode, &imm8);
|
|
if (i) {
|
|
tcg_out_insn(s, 3606, MVNI, q, rd, 0, cmode, imm8);
|
|
tcg_out_insn(s, 3606, BIC, q, rd, 0, i, extract32(n32, i * 4, 8));
|
|
return;
|
|
}
|
|
} else if (is_fimm64(v64, &cmode, &imm8)) {
|
|
tcg_out_insn(s, 3606, MOVI, q, rd, 1, cmode, imm8);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* As a last resort, load from the constant pool. Sadly there
|
|
* is no LD1R (literal), so store the full 16-byte vector.
|
|
*/
|
|
if (type == TCG_TYPE_V128) {
|
|
new_pool_l2(s, R_AARCH64_CONDBR19, s->code_ptr, 0, v64, v64);
|
|
tcg_out_insn(s, 3305, LDR_v128, 0, rd);
|
|
} else {
|
|
new_pool_label(s, v64, R_AARCH64_CONDBR19, s->code_ptr, 0);
|
|
tcg_out_insn(s, 3305, LDR_v64, 0, rd);
|
|
}
|
|
}
|
|
|
|
static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece,
|
|
TCGReg rd, TCGReg rs)
|
|
{
|
|
int is_q = type - TCG_TYPE_V64;
|
|
tcg_out_insn(s, 3605, DUP, is_q, rd, rs, 1 << vece, 0);
|
|
return true;
|
|
}
|
|
|
|
static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece,
|
|
TCGReg r, TCGReg base, intptr_t offset)
|
|
{
|
|
TCGReg temp = TCG_REG_TMP;
|
|
|
|
if (offset < -0xffffff || offset > 0xffffff) {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, temp, offset);
|
|
tcg_out_insn(s, 3502, ADD, 1, temp, temp, base);
|
|
base = temp;
|
|
} else {
|
|
AArch64Insn add_insn = I3401_ADDI;
|
|
|
|
if (offset < 0) {
|
|
add_insn = I3401_SUBI;
|
|
offset = -offset;
|
|
}
|
|
if (offset & 0xfff000) {
|
|
tcg_out_insn_3401(s, add_insn, 1, temp, base, offset & 0xfff000);
|
|
base = temp;
|
|
}
|
|
if (offset & 0xfff) {
|
|
tcg_out_insn_3401(s, add_insn, 1, temp, base, offset & 0xfff);
|
|
base = temp;
|
|
}
|
|
}
|
|
tcg_out_insn(s, 3303, LD1R, type == TCG_TYPE_V128, r, base, vece);
|
|
return true;
|
|
}
|
|
|
|
static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg rd,
|
|
tcg_target_long value)
|
|
{
|
|
tcg_target_long svalue = value;
|
|
tcg_target_long ivalue = ~value;
|
|
tcg_target_long t0, t1, t2;
|
|
int s0, s1;
|
|
AArch64Insn opc;
|
|
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
case TCG_TYPE_I64:
|
|
tcg_debug_assert(rd < 32);
|
|
break;
|
|
|
|
case TCG_TYPE_V64:
|
|
case TCG_TYPE_V128:
|
|
tcg_debug_assert(rd >= 32);
|
|
tcg_out_dupi_vec(s, type, rd, value);
|
|
return;
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
/* For 32-bit values, discard potential garbage in value. For 64-bit
|
|
values within [2**31, 2**32-1], we can create smaller sequences by
|
|
interpreting this as a negative 32-bit number, while ensuring that
|
|
the high 32 bits are cleared by setting SF=0. */
|
|
if (type == TCG_TYPE_I32 || (value & ~0xffffffffull) == 0) {
|
|
svalue = (int32_t)value;
|
|
value = (uint32_t)value;
|
|
ivalue = (uint32_t)ivalue;
|
|
type = TCG_TYPE_I32;
|
|
}
|
|
|
|
/* Speed things up by handling the common case of small positive
|
|
and negative values specially. */
|
|
if ((value & ~0xffffull) == 0) {
|
|
tcg_out_insn(s, 3405, MOVZ, type, rd, value, 0);
|
|
return;
|
|
} else if ((ivalue & ~0xffffull) == 0) {
|
|
tcg_out_insn(s, 3405, MOVN, type, rd, ivalue, 0);
|
|
return;
|
|
}
|
|
|
|
/* Check for bitfield immediates. For the benefit of 32-bit quantities,
|
|
use the sign-extended value. That lets us match rotated values such
|
|
as 0xff0000ff with the same 64-bit logic matching 0xffffffffff0000ff. */
|
|
if (is_limm(svalue)) {
|
|
tcg_out_logicali(s, I3404_ORRI, type, rd, TCG_REG_XZR, svalue);
|
|
return;
|
|
}
|
|
|
|
/* Look for host pointer values within 4G of the PC. This happens
|
|
often when loading pointers to QEMU's own data structures. */
|
|
if (type == TCG_TYPE_I64) {
|
|
tcg_target_long disp = value - (intptr_t)s->code_ptr;
|
|
if (disp == sextract64(disp, 0, 21)) {
|
|
tcg_out_insn(s, 3406, ADR, rd, disp);
|
|
return;
|
|
}
|
|
disp = (value >> 12) - ((intptr_t)s->code_ptr >> 12);
|
|
if (disp == sextract64(disp, 0, 21)) {
|
|
tcg_out_insn(s, 3406, ADRP, rd, disp);
|
|
if (value & 0xfff) {
|
|
tcg_out_insn(s, 3401, ADDI, type, rd, rd, value & 0xfff);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Would it take fewer insns to begin with MOVN? */
|
|
if (ctpop64(value) >= 32) {
|
|
t0 = ivalue;
|
|
opc = I3405_MOVN;
|
|
} else {
|
|
t0 = value;
|
|
opc = I3405_MOVZ;
|
|
}
|
|
s0 = ctz64(t0) & (63 & -16);
|
|
t1 = t0 & ~(0xffffUL << s0);
|
|
s1 = ctz64(t1) & (63 & -16);
|
|
t2 = t1 & ~(0xffffUL << s1);
|
|
if (t2 == 0) {
|
|
tcg_out_insn_3405(s, opc, type, rd, t0 >> s0, s0);
|
|
if (t1 != 0) {
|
|
tcg_out_insn(s, 3405, MOVK, type, rd, value >> s1, s1);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* For more than 2 insns, dump it into the constant pool. */
|
|
new_pool_label(s, value, R_AARCH64_CONDBR19, s->code_ptr, 0);
|
|
tcg_out_insn(s, 3305, LDR, 0, rd);
|
|
}
|
|
|
|
/* Define something more legible for general use. */
|
|
#define tcg_out_ldst_r tcg_out_insn_3310
|
|
|
|
static void tcg_out_ldst(TCGContext *s, AArch64Insn insn, TCGReg rd,
|
|
TCGReg rn, intptr_t offset, int lgsize)
|
|
{
|
|
/* If the offset is naturally aligned and in range, then we can
|
|
use the scaled uimm12 encoding */
|
|
if (offset >= 0 && !(offset & ((1 << lgsize) - 1))) {
|
|
uintptr_t scaled_uimm = offset >> lgsize;
|
|
if (scaled_uimm <= 0xfff) {
|
|
tcg_out_insn_3313(s, insn, rd, rn, scaled_uimm);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Small signed offsets can use the unscaled encoding. */
|
|
if (offset >= -256 && offset < 256) {
|
|
tcg_out_insn_3312(s, insn, rd, rn, offset);
|
|
return;
|
|
}
|
|
|
|
/* Worst-case scenario, move offset to temp register, use reg offset. */
|
|
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_TMP, offset);
|
|
tcg_out_ldst_r(s, insn, rd, rn, TCG_TYPE_I64, TCG_REG_TMP);
|
|
}
|
|
|
|
static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
|
|
{
|
|
if (ret == arg) {
|
|
return true;
|
|
}
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
case TCG_TYPE_I64:
|
|
if (ret < 32 && arg < 32) {
|
|
tcg_out_movr(s, type, ret, arg);
|
|
break;
|
|
} else if (ret < 32) {
|
|
tcg_out_insn(s, 3605, UMOV, type, ret, arg, 0, 0);
|
|
break;
|
|
} else if (arg < 32) {
|
|
tcg_out_insn(s, 3605, INS, 0, ret, arg, 4 << type, 0);
|
|
break;
|
|
}
|
|
/* FALLTHRU */
|
|
|
|
case TCG_TYPE_V64:
|
|
tcg_debug_assert(ret >= 32 && arg >= 32);
|
|
tcg_out_insn(s, 3616, ORR, 0, 0, ret, arg, arg);
|
|
break;
|
|
case TCG_TYPE_V128:
|
|
tcg_debug_assert(ret >= 32 && arg >= 32);
|
|
tcg_out_insn(s, 3616, ORR, 1, 0, ret, arg, arg);
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
|
|
TCGReg base, intptr_t ofs)
|
|
{
|
|
AArch64Insn insn;
|
|
int lgsz;
|
|
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
insn = (ret < 32 ? I3312_LDRW : I3312_LDRVS);
|
|
lgsz = 2;
|
|
break;
|
|
case TCG_TYPE_I64:
|
|
insn = (ret < 32 ? I3312_LDRX : I3312_LDRVD);
|
|
lgsz = 3;
|
|
break;
|
|
case TCG_TYPE_V64:
|
|
insn = I3312_LDRVD;
|
|
lgsz = 3;
|
|
break;
|
|
case TCG_TYPE_V128:
|
|
insn = I3312_LDRVQ;
|
|
lgsz = 4;
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
tcg_out_ldst(s, insn, ret, base, ofs, lgsz);
|
|
}
|
|
|
|
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg src,
|
|
TCGReg base, intptr_t ofs)
|
|
{
|
|
AArch64Insn insn;
|
|
int lgsz;
|
|
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
insn = (src < 32 ? I3312_STRW : I3312_STRVS);
|
|
lgsz = 2;
|
|
break;
|
|
case TCG_TYPE_I64:
|
|
insn = (src < 32 ? I3312_STRX : I3312_STRVD);
|
|
lgsz = 3;
|
|
break;
|
|
case TCG_TYPE_V64:
|
|
insn = I3312_STRVD;
|
|
lgsz = 3;
|
|
break;
|
|
case TCG_TYPE_V128:
|
|
insn = I3312_STRVQ;
|
|
lgsz = 4;
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
tcg_out_ldst(s, insn, src, base, ofs, lgsz);
|
|
}
|
|
|
|
static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
|
|
TCGReg base, intptr_t ofs)
|
|
{
|
|
if (type <= TCG_TYPE_I64 && val == 0) {
|
|
tcg_out_st(s, type, TCG_REG_XZR, base, ofs);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static inline void tcg_out_bfm(TCGContext *s, TCGType ext, TCGReg rd,
|
|
TCGReg rn, unsigned int a, unsigned int b)
|
|
{
|
|
tcg_out_insn(s, 3402, BFM, ext, rd, rn, ext, a, b);
|
|
}
|
|
|
|
static inline void tcg_out_ubfm(TCGContext *s, TCGType ext, TCGReg rd,
|
|
TCGReg rn, unsigned int a, unsigned int b)
|
|
{
|
|
tcg_out_insn(s, 3402, UBFM, ext, rd, rn, ext, a, b);
|
|
}
|
|
|
|
static inline void tcg_out_sbfm(TCGContext *s, TCGType ext, TCGReg rd,
|
|
TCGReg rn, unsigned int a, unsigned int b)
|
|
{
|
|
tcg_out_insn(s, 3402, SBFM, ext, rd, rn, ext, a, b);
|
|
}
|
|
|
|
static inline void tcg_out_extr(TCGContext *s, TCGType ext, TCGReg rd,
|
|
TCGReg rn, TCGReg rm, unsigned int a)
|
|
{
|
|
tcg_out_insn(s, 3403, EXTR, ext, rd, rn, rm, a);
|
|
}
|
|
|
|
static inline void tcg_out_shl(TCGContext *s, TCGType ext,
|
|
TCGReg rd, TCGReg rn, unsigned int m)
|
|
{
|
|
int bits = ext ? 64 : 32;
|
|
int max = bits - 1;
|
|
tcg_out_ubfm(s, ext, rd, rn, bits - (m & max), max - (m & max));
|
|
}
|
|
|
|
static inline void tcg_out_shr(TCGContext *s, TCGType ext,
|
|
TCGReg rd, TCGReg rn, unsigned int m)
|
|
{
|
|
int max = ext ? 63 : 31;
|
|
tcg_out_ubfm(s, ext, rd, rn, m & max, max);
|
|
}
|
|
|
|
static inline void tcg_out_sar(TCGContext *s, TCGType ext,
|
|
TCGReg rd, TCGReg rn, unsigned int m)
|
|
{
|
|
int max = ext ? 63 : 31;
|
|
tcg_out_sbfm(s, ext, rd, rn, m & max, max);
|
|
}
|
|
|
|
static inline void tcg_out_rotr(TCGContext *s, TCGType ext,
|
|
TCGReg rd, TCGReg rn, unsigned int m)
|
|
{
|
|
int max = ext ? 63 : 31;
|
|
tcg_out_extr(s, ext, rd, rn, rn, m & max);
|
|
}
|
|
|
|
static inline void tcg_out_rotl(TCGContext *s, TCGType ext,
|
|
TCGReg rd, TCGReg rn, unsigned int m)
|
|
{
|
|
int bits = ext ? 64 : 32;
|
|
int max = bits - 1;
|
|
tcg_out_extr(s, ext, rd, rn, rn, bits - (m & max));
|
|
}
|
|
|
|
static inline void tcg_out_dep(TCGContext *s, TCGType ext, TCGReg rd,
|
|
TCGReg rn, unsigned lsb, unsigned width)
|
|
{
|
|
unsigned size = ext ? 64 : 32;
|
|
unsigned a = (size - lsb) & (size - 1);
|
|
unsigned b = width - 1;
|
|
tcg_out_bfm(s, ext, rd, rn, a, b);
|
|
}
|
|
|
|
static void tcg_out_cmp(TCGContext *s, TCGType ext, TCGReg a,
|
|
tcg_target_long b, bool const_b)
|
|
{
|
|
if (const_b) {
|
|
/* Using CMP or CMN aliases. */
|
|
if (b >= 0) {
|
|
tcg_out_insn(s, 3401, SUBSI, ext, TCG_REG_XZR, a, b);
|
|
} else {
|
|
tcg_out_insn(s, 3401, ADDSI, ext, TCG_REG_XZR, a, -b);
|
|
}
|
|
} else {
|
|
/* Using CMP alias SUBS wzr, Wn, Wm */
|
|
tcg_out_insn(s, 3502, SUBS, ext, TCG_REG_XZR, a, b);
|
|
}
|
|
}
|
|
|
|
static inline void tcg_out_goto(TCGContext *s, tcg_insn_unit *target)
|
|
{
|
|
ptrdiff_t offset = target - s->code_ptr;
|
|
tcg_debug_assert(offset == sextract64(offset, 0, 26));
|
|
tcg_out_insn(s, 3206, B, offset);
|
|
}
|
|
|
|
static inline void tcg_out_goto_long(TCGContext *s, tcg_insn_unit *target)
|
|
{
|
|
ptrdiff_t offset = target - s->code_ptr;
|
|
if (offset == sextract64(offset, 0, 26)) {
|
|
tcg_out_insn(s, 3206, BL, offset);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_TMP, (intptr_t)target);
|
|
tcg_out_insn(s, 3207, BR, TCG_REG_TMP);
|
|
}
|
|
}
|
|
|
|
static inline void tcg_out_callr(TCGContext *s, TCGReg reg)
|
|
{
|
|
tcg_out_insn(s, 3207, BLR, reg);
|
|
}
|
|
|
|
static inline void tcg_out_call(TCGContext *s, tcg_insn_unit *target)
|
|
{
|
|
ptrdiff_t offset = target - s->code_ptr;
|
|
if (offset == sextract64(offset, 0, 26)) {
|
|
tcg_out_insn(s, 3206, BL, offset);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_TMP, (intptr_t)target);
|
|
tcg_out_callr(s, TCG_REG_TMP);
|
|
}
|
|
}
|
|
|
|
void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_addr,
|
|
uintptr_t addr)
|
|
{
|
|
tcg_insn_unit i1, i2;
|
|
TCGType rt = TCG_TYPE_I64;
|
|
TCGReg rd = TCG_REG_TMP;
|
|
uint64_t pair;
|
|
|
|
ptrdiff_t offset = addr - jmp_addr;
|
|
|
|
if (offset == sextract64(offset, 0, 26)) {
|
|
i1 = I3206_B | ((offset >> 2) & 0x3ffffff);
|
|
i2 = NOP;
|
|
} else {
|
|
offset = (addr >> 12) - (jmp_addr >> 12);
|
|
|
|
/* patch ADRP */
|
|
i1 = I3406_ADRP | (offset & 3) << 29 | (offset & 0x1ffffc) << (5 - 2) | rd;
|
|
/* patch ADDI */
|
|
i2 = I3401_ADDI | rt << 31 | (addr & 0xfff) << 10 | rd << 5 | rd;
|
|
}
|
|
pair = (uint64_t)i2 << 32 | i1;
|
|
atomic_set((uint64_t *)jmp_addr, pair);
|
|
flush_icache_range(jmp_addr, jmp_addr + 8);
|
|
}
|
|
|
|
static inline void tcg_out_goto_label(TCGContext *s, TCGLabel *l)
|
|
{
|
|
if (!l->has_value) {
|
|
tcg_out_reloc(s, s->code_ptr, R_AARCH64_JUMP26, l, 0);
|
|
tcg_out_insn(s, 3206, B, 0);
|
|
} else {
|
|
tcg_out_goto(s, l->u.value_ptr);
|
|
}
|
|
}
|
|
|
|
static void tcg_out_brcond(TCGContext *s, TCGType ext, TCGCond c, TCGArg a,
|
|
TCGArg b, bool b_const, TCGLabel *l)
|
|
{
|
|
intptr_t offset;
|
|
bool need_cmp;
|
|
|
|
if (b_const && b == 0 && (c == TCG_COND_EQ || c == TCG_COND_NE)) {
|
|
need_cmp = false;
|
|
} else {
|
|
need_cmp = true;
|
|
tcg_out_cmp(s, ext, a, b, b_const);
|
|
}
|
|
|
|
if (!l->has_value) {
|
|
tcg_out_reloc(s, s->code_ptr, R_AARCH64_CONDBR19, l, 0);
|
|
offset = tcg_in32(s) >> 5;
|
|
} else {
|
|
offset = l->u.value_ptr - s->code_ptr;
|
|
tcg_debug_assert(offset == sextract64(offset, 0, 19));
|
|
}
|
|
|
|
if (need_cmp) {
|
|
tcg_out_insn(s, 3202, B_C, c, offset);
|
|
} else if (c == TCG_COND_EQ) {
|
|
tcg_out_insn(s, 3201, CBZ, ext, a, offset);
|
|
} else {
|
|
tcg_out_insn(s, 3201, CBNZ, ext, a, offset);
|
|
}
|
|
}
|
|
|
|
static inline void tcg_out_rev64(TCGContext *s, TCGReg rd, TCGReg rn)
|
|
{
|
|
tcg_out_insn(s, 3507, REV64, TCG_TYPE_I64, rd, rn);
|
|
}
|
|
|
|
static inline void tcg_out_rev32(TCGContext *s, TCGReg rd, TCGReg rn)
|
|
{
|
|
tcg_out_insn(s, 3507, REV32, TCG_TYPE_I32, rd, rn);
|
|
}
|
|
|
|
static inline void tcg_out_rev16(TCGContext *s, TCGReg rd, TCGReg rn)
|
|
{
|
|
tcg_out_insn(s, 3507, REV16, TCG_TYPE_I32, rd, rn);
|
|
}
|
|
|
|
static inline void tcg_out_sxt(TCGContext *s, TCGType ext, MemOp s_bits,
|
|
TCGReg rd, TCGReg rn)
|
|
{
|
|
/* Using ALIASes SXTB, SXTH, SXTW, of SBFM Xd, Xn, #0, #7|15|31 */
|
|
int bits = (8 << s_bits) - 1;
|
|
tcg_out_sbfm(s, ext, rd, rn, 0, bits);
|
|
}
|
|
|
|
static inline void tcg_out_uxt(TCGContext *s, MemOp s_bits,
|
|
TCGReg rd, TCGReg rn)
|
|
{
|
|
/* Using ALIASes UXTB, UXTH of UBFM Wd, Wn, #0, #7|15 */
|
|
int bits = (8 << s_bits) - 1;
|
|
tcg_out_ubfm(s, 0, rd, rn, 0, bits);
|
|
}
|
|
|
|
static void tcg_out_addsubi(TCGContext *s, int ext, TCGReg rd,
|
|
TCGReg rn, int64_t aimm)
|
|
{
|
|
if (aimm >= 0) {
|
|
tcg_out_insn(s, 3401, ADDI, ext, rd, rn, aimm);
|
|
} else {
|
|
tcg_out_insn(s, 3401, SUBI, ext, rd, rn, -aimm);
|
|
}
|
|
}
|
|
|
|
static inline void tcg_out_addsub2(TCGContext *s, TCGType ext, TCGReg rl,
|
|
TCGReg rh, TCGReg al, TCGReg ah,
|
|
tcg_target_long bl, tcg_target_long bh,
|
|
bool const_bl, bool const_bh, bool sub)
|
|
{
|
|
TCGReg orig_rl = rl;
|
|
AArch64Insn insn;
|
|
|
|
if (rl == ah || (!const_bh && rl == bh)) {
|
|
rl = TCG_REG_TMP;
|
|
}
|
|
|
|
if (const_bl) {
|
|
insn = I3401_ADDSI;
|
|
if ((bl < 0) ^ sub) {
|
|
insn = I3401_SUBSI;
|
|
bl = -bl;
|
|
}
|
|
if (unlikely(al == TCG_REG_XZR)) {
|
|
/* ??? We want to allow al to be zero for the benefit of
|
|
negation via subtraction. However, that leaves open the
|
|
possibility of adding 0+const in the low part, and the
|
|
immediate add instructions encode XSP not XZR. Don't try
|
|
anything more elaborate here than loading another zero. */
|
|
al = TCG_REG_TMP;
|
|
tcg_out_movi(s, ext, al, 0);
|
|
}
|
|
tcg_out_insn_3401(s, insn, ext, rl, al, bl);
|
|
} else {
|
|
tcg_out_insn_3502(s, sub ? I3502_SUBS : I3502_ADDS, ext, rl, al, bl);
|
|
}
|
|
|
|
insn = I3503_ADC;
|
|
if (const_bh) {
|
|
/* Note that the only two constants we support are 0 and -1, and
|
|
that SBC = rn + ~rm + c, so adc -1 is sbc 0, and vice-versa. */
|
|
if ((bh != 0) ^ sub) {
|
|
insn = I3503_SBC;
|
|
}
|
|
bh = TCG_REG_XZR;
|
|
} else if (sub) {
|
|
insn = I3503_SBC;
|
|
}
|
|
tcg_out_insn_3503(s, insn, ext, rh, ah, bh);
|
|
|
|
tcg_out_mov(s, ext, orig_rl, rl);
|
|
}
|
|
|
|
static inline void tcg_out_mb(TCGContext *s, TCGArg a0)
|
|
{
|
|
static const uint32_t sync[] = {
|
|
[0 ... TCG_MO_ALL] = DMB_ISH | DMB_LD | DMB_ST,
|
|
[TCG_MO_ST_ST] = DMB_ISH | DMB_ST,
|
|
[TCG_MO_LD_LD] = DMB_ISH | DMB_LD,
|
|
[TCG_MO_LD_ST] = DMB_ISH | DMB_LD,
|
|
[TCG_MO_LD_ST | TCG_MO_LD_LD] = DMB_ISH | DMB_LD,
|
|
};
|
|
tcg_out32(s, sync[a0 & TCG_MO_ALL]);
|
|
}
|
|
|
|
static void tcg_out_cltz(TCGContext *s, TCGType ext, TCGReg d,
|
|
TCGReg a0, TCGArg b, bool const_b, bool is_ctz)
|
|
{
|
|
TCGReg a1 = a0;
|
|
if (is_ctz) {
|
|
a1 = TCG_REG_TMP;
|
|
tcg_out_insn(s, 3507, RBIT, ext, a1, a0);
|
|
}
|
|
if (const_b && b == (ext ? 64 : 32)) {
|
|
tcg_out_insn(s, 3507, CLZ, ext, d, a1);
|
|
} else {
|
|
AArch64Insn sel = I3506_CSEL;
|
|
|
|
tcg_out_cmp(s, ext, a0, 0, 1);
|
|
tcg_out_insn(s, 3507, CLZ, ext, TCG_REG_TMP, a1);
|
|
|
|
if (const_b) {
|
|
if (b == -1) {
|
|
b = TCG_REG_XZR;
|
|
sel = I3506_CSINV;
|
|
} else if (b == 0) {
|
|
b = TCG_REG_XZR;
|
|
} else {
|
|
tcg_out_movi(s, ext, d, b);
|
|
b = d;
|
|
}
|
|
}
|
|
tcg_out_insn_3506(s, sel, ext, d, TCG_REG_TMP, b, TCG_COND_NE);
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_SOFTMMU
|
|
#include "tcg-ldst.inc.c"
|
|
|
|
/* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr,
|
|
* TCGMemOpIdx oi, 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_ret_st_mmu(CPUState *env, target_ulong addr,
|
|
* uintxx_t val, TCGMemOpIdx oi,
|
|
* 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,
|
|
};
|
|
|
|
static inline void tcg_out_adr(TCGContext *s, TCGReg rd, void *target)
|
|
{
|
|
ptrdiff_t offset = tcg_pcrel_diff(s, target);
|
|
tcg_debug_assert(offset == sextract64(offset, 0, 21));
|
|
tcg_out_insn(s, 3406, ADR, rd, offset);
|
|
}
|
|
|
|
static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
|
|
{
|
|
TCGMemOpIdx oi = lb->oi;
|
|
MemOp opc = get_memop(oi);
|
|
MemOp size = opc & MO_SIZE;
|
|
|
|
if (!reloc_pc19(lb->label_ptr[0], s->code_ptr)) {
|
|
return false;
|
|
}
|
|
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_X0, TCG_AREG0);
|
|
tcg_out_mov(s, TARGET_LONG_BITS == 64, TCG_REG_X1, lb->addrlo_reg);
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_X2, oi);
|
|
tcg_out_adr(s, TCG_REG_X3, lb->raddr);
|
|
tcg_out_call(s, qemu_ld_helpers[opc & (MO_BSWAP | MO_SIZE)]);
|
|
if (opc & MO_SIGN) {
|
|
tcg_out_sxt(s, lb->type, size, lb->datalo_reg, TCG_REG_X0);
|
|
} else {
|
|
tcg_out_mov(s, size == MO_64, lb->datalo_reg, TCG_REG_X0);
|
|
}
|
|
|
|
tcg_out_goto(s, lb->raddr);
|
|
return true;
|
|
}
|
|
|
|
static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
|
|
{
|
|
TCGMemOpIdx oi = lb->oi;
|
|
MemOp opc = get_memop(oi);
|
|
MemOp size = opc & MO_SIZE;
|
|
|
|
if (!reloc_pc19(lb->label_ptr[0], s->code_ptr)) {
|
|
return false;
|
|
}
|
|
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_X0, TCG_AREG0);
|
|
tcg_out_mov(s, TARGET_LONG_BITS == 64, TCG_REG_X1, lb->addrlo_reg);
|
|
tcg_out_mov(s, size == MO_64, TCG_REG_X2, lb->datalo_reg);
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_X3, oi);
|
|
tcg_out_adr(s, TCG_REG_X4, lb->raddr);
|
|
tcg_out_call(s, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]);
|
|
tcg_out_goto(s, lb->raddr);
|
|
return true;
|
|
}
|
|
|
|
static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOpIdx oi,
|
|
TCGType ext, TCGReg data_reg, TCGReg addr_reg,
|
|
tcg_insn_unit *raddr, tcg_insn_unit *label_ptr)
|
|
{
|
|
TCGLabelQemuLdst *label = new_ldst_label(s);
|
|
|
|
label->is_ld = is_ld;
|
|
label->oi = oi;
|
|
label->type = ext;
|
|
label->datalo_reg = data_reg;
|
|
label->addrlo_reg = addr_reg;
|
|
label->raddr = raddr;
|
|
label->label_ptr[0] = label_ptr;
|
|
}
|
|
|
|
/* We expect to use a 7-bit scaled negative offset from ENV. */
|
|
QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) > 0);
|
|
QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) < -512);
|
|
|
|
/* These offsets are built into the LDP below. */
|
|
QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, mask) != 0);
|
|
QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, table) != 8);
|
|
|
|
/* Load and compare a TLB entry, emitting the conditional jump to the
|
|
slow path for the failure case, which will be patched later when finalizing
|
|
the slow path. Generated code returns the host addend in X1,
|
|
clobbers X0,X2,X3,TMP. */
|
|
static void tcg_out_tlb_read(TCGContext *s, TCGReg addr_reg, MemOp opc,
|
|
tcg_insn_unit **label_ptr, int mem_index,
|
|
bool is_read)
|
|
{
|
|
unsigned a_bits = get_alignment_bits(opc);
|
|
unsigned s_bits = opc & MO_SIZE;
|
|
unsigned a_mask = (1u << a_bits) - 1;
|
|
unsigned s_mask = (1u << s_bits) - 1;
|
|
TCGReg x3;
|
|
TCGType mask_type;
|
|
uint64_t compare_mask;
|
|
|
|
mask_type = (TARGET_PAGE_BITS + CPU_TLB_DYN_MAX_BITS > 32
|
|
? TCG_TYPE_I64 : TCG_TYPE_I32);
|
|
|
|
/* Load env_tlb(env)->f[mmu_idx].{mask,table} into {x0,x1}. */
|
|
tcg_out_insn(s, 3314, LDP, TCG_REG_X0, TCG_REG_X1, TCG_AREG0,
|
|
TLB_MASK_TABLE_OFS(mem_index), 1, 0);
|
|
|
|
/* Extract the TLB index from the address into X0. */
|
|
tcg_out_insn(s, 3502S, AND_LSR, mask_type == TCG_TYPE_I64,
|
|
TCG_REG_X0, TCG_REG_X0, addr_reg,
|
|
TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
|
|
|
|
/* Add the tlb_table pointer, creating the CPUTLBEntry address into X1. */
|
|
tcg_out_insn(s, 3502, ADD, 1, TCG_REG_X1, TCG_REG_X1, TCG_REG_X0);
|
|
|
|
/* Load the tlb comparator into X0, and the fast path addend into X1. */
|
|
tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_X0, TCG_REG_X1, is_read
|
|
? offsetof(CPUTLBEntry, addr_read)
|
|
: offsetof(CPUTLBEntry, addr_write));
|
|
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_X1, TCG_REG_X1,
|
|
offsetof(CPUTLBEntry, addend));
|
|
|
|
/* For aligned accesses, we check the first byte and include the alignment
|
|
bits within the address. For unaligned access, we check that we don't
|
|
cross pages using the address of the last byte of the access. */
|
|
if (a_bits >= s_bits) {
|
|
x3 = addr_reg;
|
|
} else {
|
|
tcg_out_insn(s, 3401, ADDI, TARGET_LONG_BITS == 64,
|
|
TCG_REG_X3, addr_reg, s_mask - a_mask);
|
|
x3 = TCG_REG_X3;
|
|
}
|
|
compare_mask = (uint64_t)TARGET_PAGE_MASK | a_mask;
|
|
|
|
/* Store the page mask part of the address into X3. */
|
|
tcg_out_logicali(s, I3404_ANDI, TARGET_LONG_BITS == 64,
|
|
TCG_REG_X3, x3, compare_mask);
|
|
|
|
/* Perform the address comparison. */
|
|
tcg_out_cmp(s, TARGET_LONG_BITS == 64, TCG_REG_X0, TCG_REG_X3, 0);
|
|
|
|
/* If not equal, we jump to the slow path. */
|
|
*label_ptr = s->code_ptr;
|
|
tcg_out_insn(s, 3202, B_C, TCG_COND_NE, 0);
|
|
}
|
|
|
|
#endif /* CONFIG_SOFTMMU */
|
|
|
|
static void tcg_out_qemu_ld_direct(TCGContext *s, MemOp memop, TCGType ext,
|
|
TCGReg data_r, TCGReg addr_r,
|
|
TCGType otype, TCGReg off_r)
|
|
{
|
|
const MemOp bswap = memop & MO_BSWAP;
|
|
|
|
switch (memop & MO_SSIZE) {
|
|
case MO_UB:
|
|
tcg_out_ldst_r(s, I3312_LDRB, data_r, addr_r, otype, off_r);
|
|
break;
|
|
case MO_SB:
|
|
tcg_out_ldst_r(s, ext ? I3312_LDRSBX : I3312_LDRSBW,
|
|
data_r, addr_r, otype, off_r);
|
|
break;
|
|
case MO_UW:
|
|
tcg_out_ldst_r(s, I3312_LDRH, data_r, addr_r, otype, off_r);
|
|
if (bswap) {
|
|
tcg_out_rev16(s, data_r, data_r);
|
|
}
|
|
break;
|
|
case MO_SW:
|
|
if (bswap) {
|
|
tcg_out_ldst_r(s, I3312_LDRH, data_r, addr_r, otype, off_r);
|
|
tcg_out_rev16(s, data_r, data_r);
|
|
tcg_out_sxt(s, ext, MO_16, data_r, data_r);
|
|
} else {
|
|
tcg_out_ldst_r(s, (ext ? I3312_LDRSHX : I3312_LDRSHW),
|
|
data_r, addr_r, otype, off_r);
|
|
}
|
|
break;
|
|
case MO_UL:
|
|
tcg_out_ldst_r(s, I3312_LDRW, data_r, addr_r, otype, off_r);
|
|
if (bswap) {
|
|
tcg_out_rev32(s, data_r, data_r);
|
|
}
|
|
break;
|
|
case MO_SL:
|
|
if (bswap) {
|
|
tcg_out_ldst_r(s, I3312_LDRW, data_r, addr_r, otype, off_r);
|
|
tcg_out_rev32(s, data_r, data_r);
|
|
tcg_out_sxt(s, TCG_TYPE_I64, MO_32, data_r, data_r);
|
|
} else {
|
|
tcg_out_ldst_r(s, I3312_LDRSWX, data_r, addr_r, otype, off_r);
|
|
}
|
|
break;
|
|
case MO_Q:
|
|
tcg_out_ldst_r(s, I3312_LDRX, data_r, addr_r, otype, off_r);
|
|
if (bswap) {
|
|
tcg_out_rev64(s, data_r, data_r);
|
|
}
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
|
|
static void tcg_out_qemu_st_direct(TCGContext *s, MemOp memop,
|
|
TCGReg data_r, TCGReg addr_r,
|
|
TCGType otype, TCGReg off_r)
|
|
{
|
|
const MemOp bswap = memop & MO_BSWAP;
|
|
|
|
switch (memop & MO_SIZE) {
|
|
case MO_8:
|
|
tcg_out_ldst_r(s, I3312_STRB, data_r, addr_r, otype, off_r);
|
|
break;
|
|
case MO_16:
|
|
if (bswap && data_r != TCG_REG_XZR) {
|
|
tcg_out_rev16(s, TCG_REG_TMP, data_r);
|
|
data_r = TCG_REG_TMP;
|
|
}
|
|
tcg_out_ldst_r(s, I3312_STRH, data_r, addr_r, otype, off_r);
|
|
break;
|
|
case MO_32:
|
|
if (bswap && data_r != TCG_REG_XZR) {
|
|
tcg_out_rev32(s, TCG_REG_TMP, data_r);
|
|
data_r = TCG_REG_TMP;
|
|
}
|
|
tcg_out_ldst_r(s, I3312_STRW, data_r, addr_r, otype, off_r);
|
|
break;
|
|
case MO_64:
|
|
if (bswap && data_r != TCG_REG_XZR) {
|
|
tcg_out_rev64(s, TCG_REG_TMP, data_r);
|
|
data_r = TCG_REG_TMP;
|
|
}
|
|
tcg_out_ldst_r(s, I3312_STRX, data_r, addr_r, otype, off_r);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
|
|
static void tcg_out_qemu_ld(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
|
|
TCGMemOpIdx oi, TCGType ext)
|
|
{
|
|
MemOp memop = get_memop(oi);
|
|
const TCGType otype = TARGET_LONG_BITS == 64 ? TCG_TYPE_I64 : TCG_TYPE_I32;
|
|
#ifdef CONFIG_SOFTMMU
|
|
unsigned mem_index = get_mmuidx(oi);
|
|
tcg_insn_unit *label_ptr;
|
|
|
|
tcg_out_tlb_read(s, addr_reg, memop, &label_ptr, mem_index, 1);
|
|
tcg_out_qemu_ld_direct(s, memop, ext, data_reg,
|
|
TCG_REG_X1, otype, addr_reg);
|
|
add_qemu_ldst_label(s, true, oi, ext, data_reg, addr_reg,
|
|
s->code_ptr, label_ptr);
|
|
#else /* !CONFIG_SOFTMMU */
|
|
if (USE_GUEST_BASE) {
|
|
tcg_out_qemu_ld_direct(s, memop, ext, data_reg,
|
|
TCG_REG_GUEST_BASE, otype, addr_reg);
|
|
} else {
|
|
tcg_out_qemu_ld_direct(s, memop, ext, data_reg,
|
|
addr_reg, TCG_TYPE_I64, TCG_REG_XZR);
|
|
}
|
|
#endif /* CONFIG_SOFTMMU */
|
|
}
|
|
|
|
static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
|
|
TCGMemOpIdx oi)
|
|
{
|
|
MemOp memop = get_memop(oi);
|
|
const TCGType otype = TARGET_LONG_BITS == 64 ? TCG_TYPE_I64 : TCG_TYPE_I32;
|
|
#ifdef CONFIG_SOFTMMU
|
|
unsigned mem_index = get_mmuidx(oi);
|
|
tcg_insn_unit *label_ptr;
|
|
|
|
tcg_out_tlb_read(s, addr_reg, memop, &label_ptr, mem_index, 0);
|
|
tcg_out_qemu_st_direct(s, memop, data_reg,
|
|
TCG_REG_X1, otype, addr_reg);
|
|
add_qemu_ldst_label(s, false, oi, (memop & MO_SIZE)== MO_64,
|
|
data_reg, addr_reg, s->code_ptr, label_ptr);
|
|
#else /* !CONFIG_SOFTMMU */
|
|
if (USE_GUEST_BASE) {
|
|
tcg_out_qemu_st_direct(s, memop, data_reg,
|
|
TCG_REG_GUEST_BASE, otype, addr_reg);
|
|
} else {
|
|
tcg_out_qemu_st_direct(s, memop, data_reg,
|
|
addr_reg, TCG_TYPE_I64, TCG_REG_XZR);
|
|
}
|
|
#endif /* CONFIG_SOFTMMU */
|
|
}
|
|
|
|
static tcg_insn_unit *tb_ret_addr;
|
|
|
|
static void tcg_out_op(TCGContext *s, TCGOpcode opc,
|
|
const TCGArg args[TCG_MAX_OP_ARGS],
|
|
const int const_args[TCG_MAX_OP_ARGS])
|
|
{
|
|
/* 99% of the time, we can signal the use of extension registers
|
|
by looking to see if the opcode handles 64-bit data. */
|
|
TCGType ext = (tcg_op_defs[opc].flags & TCG_OPF_64BIT) != 0;
|
|
|
|
/* Hoist the loads of the most common arguments. */
|
|
TCGArg a0 = args[0];
|
|
TCGArg a1 = args[1];
|
|
TCGArg a2 = args[2];
|
|
int c2 = const_args[2];
|
|
|
|
/* Some operands are defined with "rZ" constraint, a register or
|
|
the zero register. These need not actually test args[I] == 0. */
|
|
#define REG0(I) (const_args[I] ? TCG_REG_XZR : (TCGReg)args[I])
|
|
|
|
switch (opc) {
|
|
case INDEX_op_exit_tb:
|
|
/* Reuse the zeroing that exists for goto_ptr. */
|
|
if (a0 == 0) {
|
|
tcg_out_goto_long(s, s->code_gen_epilogue);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_X0, a0);
|
|
tcg_out_goto_long(s, tb_ret_addr);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_goto_tb:
|
|
if (s->tb_jmp_insn_offset != NULL) {
|
|
/* TCG_TARGET_HAS_direct_jump */
|
|
/* Ensure that ADRP+ADD are 8-byte aligned so that an atomic
|
|
write can be used to patch the target address. */
|
|
if ((uintptr_t)s->code_ptr & 7) {
|
|
tcg_out32(s, NOP);
|
|
}
|
|
s->tb_jmp_insn_offset[a0] = tcg_current_code_size(s);
|
|
/* actual branch destination will be patched by
|
|
tb_target_set_jmp_target later. */
|
|
tcg_out_insn(s, 3406, ADRP, TCG_REG_TMP, 0);
|
|
tcg_out_insn(s, 3401, ADDI, TCG_TYPE_I64, TCG_REG_TMP, TCG_REG_TMP, 0);
|
|
} else {
|
|
/* !TCG_TARGET_HAS_direct_jump */
|
|
tcg_debug_assert(s->tb_jmp_target_addr != NULL);
|
|
intptr_t offset = tcg_pcrel_diff(s, (s->tb_jmp_target_addr + a0)) >> 2;
|
|
tcg_out_insn(s, 3305, LDR, offset, TCG_REG_TMP);
|
|
}
|
|
tcg_out_insn(s, 3207, BR, TCG_REG_TMP);
|
|
set_jmp_reset_offset(s, a0);
|
|
break;
|
|
|
|
case INDEX_op_goto_ptr:
|
|
tcg_out_insn(s, 3207, BR, a0);
|
|
break;
|
|
|
|
case INDEX_op_br:
|
|
tcg_out_goto_label(s, arg_label(a0));
|
|
break;
|
|
|
|
case INDEX_op_ld8u_i32:
|
|
case INDEX_op_ld8u_i64:
|
|
tcg_out_ldst(s, I3312_LDRB, a0, a1, a2, 0);
|
|
break;
|
|
case INDEX_op_ld8s_i32:
|
|
tcg_out_ldst(s, I3312_LDRSBW, a0, a1, a2, 0);
|
|
break;
|
|
case INDEX_op_ld8s_i64:
|
|
tcg_out_ldst(s, I3312_LDRSBX, a0, a1, a2, 0);
|
|
break;
|
|
case INDEX_op_ld16u_i32:
|
|
case INDEX_op_ld16u_i64:
|
|
tcg_out_ldst(s, I3312_LDRH, a0, a1, a2, 1);
|
|
break;
|
|
case INDEX_op_ld16s_i32:
|
|
tcg_out_ldst(s, I3312_LDRSHW, a0, a1, a2, 1);
|
|
break;
|
|
case INDEX_op_ld16s_i64:
|
|
tcg_out_ldst(s, I3312_LDRSHX, a0, a1, a2, 1);
|
|
break;
|
|
case INDEX_op_ld_i32:
|
|
case INDEX_op_ld32u_i64:
|
|
tcg_out_ldst(s, I3312_LDRW, a0, a1, a2, 2);
|
|
break;
|
|
case INDEX_op_ld32s_i64:
|
|
tcg_out_ldst(s, I3312_LDRSWX, a0, a1, a2, 2);
|
|
break;
|
|
case INDEX_op_ld_i64:
|
|
tcg_out_ldst(s, I3312_LDRX, a0, a1, a2, 3);
|
|
break;
|
|
|
|
case INDEX_op_st8_i32:
|
|
case INDEX_op_st8_i64:
|
|
tcg_out_ldst(s, I3312_STRB, REG0(0), a1, a2, 0);
|
|
break;
|
|
case INDEX_op_st16_i32:
|
|
case INDEX_op_st16_i64:
|
|
tcg_out_ldst(s, I3312_STRH, REG0(0), a1, a2, 1);
|
|
break;
|
|
case INDEX_op_st_i32:
|
|
case INDEX_op_st32_i64:
|
|
tcg_out_ldst(s, I3312_STRW, REG0(0), a1, a2, 2);
|
|
break;
|
|
case INDEX_op_st_i64:
|
|
tcg_out_ldst(s, I3312_STRX, REG0(0), a1, a2, 3);
|
|
break;
|
|
|
|
case INDEX_op_add_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_add_i64:
|
|
if (c2) {
|
|
tcg_out_addsubi(s, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3502, ADD, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_sub_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_sub_i64:
|
|
if (c2) {
|
|
tcg_out_addsubi(s, ext, a0, a1, -a2);
|
|
} else {
|
|
tcg_out_insn(s, 3502, SUB, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_neg_i64:
|
|
case INDEX_op_neg_i32:
|
|
tcg_out_insn(s, 3502, SUB, ext, a0, TCG_REG_XZR, a1);
|
|
break;
|
|
|
|
case INDEX_op_and_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_and_i64:
|
|
if (c2) {
|
|
tcg_out_logicali(s, I3404_ANDI, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3510, AND, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_andc_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_andc_i64:
|
|
if (c2) {
|
|
tcg_out_logicali(s, I3404_ANDI, ext, a0, a1, ~a2);
|
|
} else {
|
|
tcg_out_insn(s, 3510, BIC, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_or_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_or_i64:
|
|
if (c2) {
|
|
tcg_out_logicali(s, I3404_ORRI, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3510, ORR, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_orc_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_orc_i64:
|
|
if (c2) {
|
|
tcg_out_logicali(s, I3404_ORRI, ext, a0, a1, ~a2);
|
|
} else {
|
|
tcg_out_insn(s, 3510, ORN, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_xor_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_xor_i64:
|
|
if (c2) {
|
|
tcg_out_logicali(s, I3404_EORI, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3510, EOR, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_eqv_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_eqv_i64:
|
|
if (c2) {
|
|
tcg_out_logicali(s, I3404_EORI, ext, a0, a1, ~a2);
|
|
} else {
|
|
tcg_out_insn(s, 3510, EON, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_not_i64:
|
|
case INDEX_op_not_i32:
|
|
tcg_out_insn(s, 3510, ORN, ext, a0, TCG_REG_XZR, a1);
|
|
break;
|
|
|
|
case INDEX_op_mul_i64:
|
|
case INDEX_op_mul_i32:
|
|
tcg_out_insn(s, 3509, MADD, ext, a0, a1, a2, TCG_REG_XZR);
|
|
break;
|
|
|
|
case INDEX_op_div_i64:
|
|
case INDEX_op_div_i32:
|
|
tcg_out_insn(s, 3508, SDIV, ext, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_divu_i64:
|
|
case INDEX_op_divu_i32:
|
|
tcg_out_insn(s, 3508, UDIV, ext, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_rem_i64:
|
|
case INDEX_op_rem_i32:
|
|
tcg_out_insn(s, 3508, SDIV, ext, TCG_REG_TMP, a1, a2);
|
|
tcg_out_insn(s, 3509, MSUB, ext, a0, TCG_REG_TMP, a2, a1);
|
|
break;
|
|
case INDEX_op_remu_i64:
|
|
case INDEX_op_remu_i32:
|
|
tcg_out_insn(s, 3508, UDIV, ext, TCG_REG_TMP, a1, a2);
|
|
tcg_out_insn(s, 3509, MSUB, ext, a0, TCG_REG_TMP, a2, a1);
|
|
break;
|
|
|
|
case INDEX_op_shl_i64:
|
|
case INDEX_op_shl_i32:
|
|
if (c2) {
|
|
tcg_out_shl(s, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3508, LSLV, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_shr_i64:
|
|
case INDEX_op_shr_i32:
|
|
if (c2) {
|
|
tcg_out_shr(s, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3508, LSRV, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_sar_i64:
|
|
case INDEX_op_sar_i32:
|
|
if (c2) {
|
|
tcg_out_sar(s, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3508, ASRV, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_rotr_i64:
|
|
case INDEX_op_rotr_i32:
|
|
if (c2) {
|
|
tcg_out_rotr(s, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3508, RORV, ext, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_rotl_i64:
|
|
case INDEX_op_rotl_i32:
|
|
if (c2) {
|
|
tcg_out_rotl(s, ext, a0, a1, a2);
|
|
} else {
|
|
tcg_out_insn(s, 3502, SUB, 0, TCG_REG_TMP, TCG_REG_XZR, a2);
|
|
tcg_out_insn(s, 3508, RORV, ext, a0, a1, TCG_REG_TMP);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_clz_i64:
|
|
case INDEX_op_clz_i32:
|
|
tcg_out_cltz(s, ext, a0, a1, a2, c2, false);
|
|
break;
|
|
case INDEX_op_ctz_i64:
|
|
case INDEX_op_ctz_i32:
|
|
tcg_out_cltz(s, ext, a0, a1, a2, c2, true);
|
|
break;
|
|
|
|
case INDEX_op_brcond_i32:
|
|
a1 = (int32_t)a1;
|
|
/* FALLTHRU */
|
|
case INDEX_op_brcond_i64:
|
|
tcg_out_brcond(s, ext, a2, a0, a1, const_args[1], arg_label(args[3]));
|
|
break;
|
|
|
|
case INDEX_op_setcond_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_setcond_i64:
|
|
tcg_out_cmp(s, ext, a1, a2, c2);
|
|
/* Use CSET alias of CSINC Wd, WZR, WZR, invert(cond). */
|
|
tcg_out_insn(s, 3506, CSINC, TCG_TYPE_I32, a0, TCG_REG_XZR,
|
|
TCG_REG_XZR, tcg_invert_cond(args[3]));
|
|
break;
|
|
|
|
case INDEX_op_movcond_i32:
|
|
a2 = (int32_t)a2;
|
|
/* FALLTHRU */
|
|
case INDEX_op_movcond_i64:
|
|
tcg_out_cmp(s, ext, a1, a2, c2);
|
|
tcg_out_insn(s, 3506, CSEL, ext, a0, REG0(3), REG0(4), args[5]);
|
|
break;
|
|
|
|
case INDEX_op_qemu_ld_i32:
|
|
case INDEX_op_qemu_ld_i64:
|
|
tcg_out_qemu_ld(s, a0, a1, a2, ext);
|
|
break;
|
|
case INDEX_op_qemu_st_i32:
|
|
case INDEX_op_qemu_st_i64:
|
|
tcg_out_qemu_st(s, REG0(0), a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_bswap64_i64:
|
|
tcg_out_rev64(s, a0, a1);
|
|
break;
|
|
case INDEX_op_bswap32_i64:
|
|
case INDEX_op_bswap32_i32:
|
|
tcg_out_rev32(s, a0, a1);
|
|
break;
|
|
case INDEX_op_bswap16_i64:
|
|
case INDEX_op_bswap16_i32:
|
|
tcg_out_rev16(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_ext8s_i64:
|
|
case INDEX_op_ext8s_i32:
|
|
tcg_out_sxt(s, ext, MO_8, a0, a1);
|
|
break;
|
|
case INDEX_op_ext16s_i64:
|
|
case INDEX_op_ext16s_i32:
|
|
tcg_out_sxt(s, ext, MO_16, a0, a1);
|
|
break;
|
|
case INDEX_op_ext_i32_i64:
|
|
case INDEX_op_ext32s_i64:
|
|
tcg_out_sxt(s, TCG_TYPE_I64, MO_32, a0, a1);
|
|
break;
|
|
case INDEX_op_ext8u_i64:
|
|
case INDEX_op_ext8u_i32:
|
|
tcg_out_uxt(s, MO_8, a0, a1);
|
|
break;
|
|
case INDEX_op_ext16u_i64:
|
|
case INDEX_op_ext16u_i32:
|
|
tcg_out_uxt(s, MO_16, a0, a1);
|
|
break;
|
|
case INDEX_op_extu_i32_i64:
|
|
case INDEX_op_ext32u_i64:
|
|
tcg_out_movr(s, TCG_TYPE_I32, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_deposit_i64:
|
|
case INDEX_op_deposit_i32:
|
|
tcg_out_dep(s, ext, a0, REG0(2), args[3], args[4]);
|
|
break;
|
|
|
|
case INDEX_op_extract_i64:
|
|
case INDEX_op_extract_i32:
|
|
tcg_out_ubfm(s, ext, a0, a1, a2, a2 + args[3] - 1);
|
|
break;
|
|
|
|
case INDEX_op_sextract_i64:
|
|
case INDEX_op_sextract_i32:
|
|
tcg_out_sbfm(s, ext, a0, a1, a2, a2 + args[3] - 1);
|
|
break;
|
|
|
|
case INDEX_op_extract2_i64:
|
|
case INDEX_op_extract2_i32:
|
|
tcg_out_extr(s, ext, a0, REG0(2), REG0(1), args[3]);
|
|
break;
|
|
|
|
case INDEX_op_add2_i32:
|
|
tcg_out_addsub2(s, TCG_TYPE_I32, a0, a1, REG0(2), REG0(3),
|
|
(int32_t)args[4], args[5], const_args[4],
|
|
const_args[5], false);
|
|
break;
|
|
case INDEX_op_add2_i64:
|
|
tcg_out_addsub2(s, TCG_TYPE_I64, a0, a1, REG0(2), REG0(3), args[4],
|
|
args[5], const_args[4], const_args[5], false);
|
|
break;
|
|
case INDEX_op_sub2_i32:
|
|
tcg_out_addsub2(s, TCG_TYPE_I32, a0, a1, REG0(2), REG0(3),
|
|
(int32_t)args[4], args[5], const_args[4],
|
|
const_args[5], true);
|
|
break;
|
|
case INDEX_op_sub2_i64:
|
|
tcg_out_addsub2(s, TCG_TYPE_I64, a0, a1, REG0(2), REG0(3), args[4],
|
|
args[5], const_args[4], const_args[5], true);
|
|
break;
|
|
|
|
case INDEX_op_muluh_i64:
|
|
tcg_out_insn(s, 3508, UMULH, TCG_TYPE_I64, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_mulsh_i64:
|
|
tcg_out_insn(s, 3508, SMULH, TCG_TYPE_I64, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_mb:
|
|
tcg_out_mb(s, a0);
|
|
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:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
#undef REG0
|
|
}
|
|
|
|
static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
|
|
unsigned vecl, unsigned vece,
|
|
const TCGArg *args, const int *const_args)
|
|
{
|
|
static const AArch64Insn cmp_insn[16] = {
|
|
[TCG_COND_EQ] = I3616_CMEQ,
|
|
[TCG_COND_GT] = I3616_CMGT,
|
|
[TCG_COND_GE] = I3616_CMGE,
|
|
[TCG_COND_GTU] = I3616_CMHI,
|
|
[TCG_COND_GEU] = I3616_CMHS,
|
|
};
|
|
static const AArch64Insn cmp0_insn[16] = {
|
|
[TCG_COND_EQ] = I3617_CMEQ0,
|
|
[TCG_COND_GT] = I3617_CMGT0,
|
|
[TCG_COND_GE] = I3617_CMGE0,
|
|
[TCG_COND_LT] = I3617_CMLT0,
|
|
[TCG_COND_LE] = I3617_CMLE0,
|
|
};
|
|
|
|
TCGType type = vecl + TCG_TYPE_V64;
|
|
unsigned is_q = vecl;
|
|
TCGArg a0, a1, a2, a3;
|
|
int cmode, imm8;
|
|
|
|
a0 = args[0];
|
|
a1 = args[1];
|
|
a2 = args[2];
|
|
|
|
switch (opc) {
|
|
case INDEX_op_ld_vec:
|
|
tcg_out_ld(s, type, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_st_vec:
|
|
tcg_out_st(s, type, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_dupm_vec:
|
|
tcg_out_dupm_vec(s, type, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_add_vec:
|
|
tcg_out_insn(s, 3616, ADD, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_sub_vec:
|
|
tcg_out_insn(s, 3616, SUB, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_mul_vec:
|
|
tcg_out_insn(s, 3616, MUL, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_neg_vec:
|
|
tcg_out_insn(s, 3617, NEG, is_q, vece, a0, a1);
|
|
break;
|
|
case INDEX_op_abs_vec:
|
|
tcg_out_insn(s, 3617, ABS, is_q, vece, a0, a1);
|
|
break;
|
|
case INDEX_op_and_vec:
|
|
if (const_args[2]) {
|
|
is_shimm1632(~a2, &cmode, &imm8);
|
|
if (a0 == a1) {
|
|
tcg_out_insn(s, 3606, BIC, is_q, a0, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
tcg_out_insn(s, 3606, MVNI, is_q, a0, 0, cmode, imm8);
|
|
a2 = a0;
|
|
}
|
|
tcg_out_insn(s, 3616, AND, is_q, 0, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_or_vec:
|
|
if (const_args[2]) {
|
|
is_shimm1632(a2, &cmode, &imm8);
|
|
if (a0 == a1) {
|
|
tcg_out_insn(s, 3606, ORR, is_q, a0, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
tcg_out_insn(s, 3606, MOVI, is_q, a0, 0, cmode, imm8);
|
|
a2 = a0;
|
|
}
|
|
tcg_out_insn(s, 3616, ORR, is_q, 0, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_andc_vec:
|
|
if (const_args[2]) {
|
|
is_shimm1632(a2, &cmode, &imm8);
|
|
if (a0 == a1) {
|
|
tcg_out_insn(s, 3606, BIC, is_q, a0, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
tcg_out_insn(s, 3606, MOVI, is_q, a0, 0, cmode, imm8);
|
|
a2 = a0;
|
|
}
|
|
tcg_out_insn(s, 3616, BIC, is_q, 0, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_orc_vec:
|
|
if (const_args[2]) {
|
|
is_shimm1632(~a2, &cmode, &imm8);
|
|
if (a0 == a1) {
|
|
tcg_out_insn(s, 3606, ORR, is_q, a0, 0, cmode, imm8);
|
|
return;
|
|
}
|
|
tcg_out_insn(s, 3606, MVNI, is_q, a0, 0, cmode, imm8);
|
|
a2 = a0;
|
|
}
|
|
tcg_out_insn(s, 3616, ORN, is_q, 0, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_xor_vec:
|
|
tcg_out_insn(s, 3616, EOR, is_q, 0, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ssadd_vec:
|
|
tcg_out_insn(s, 3616, SQADD, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_sssub_vec:
|
|
tcg_out_insn(s, 3616, SQSUB, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_usadd_vec:
|
|
tcg_out_insn(s, 3616, UQADD, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ussub_vec:
|
|
tcg_out_insn(s, 3616, UQSUB, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_smax_vec:
|
|
tcg_out_insn(s, 3616, SMAX, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_smin_vec:
|
|
tcg_out_insn(s, 3616, SMIN, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_umax_vec:
|
|
tcg_out_insn(s, 3616, UMAX, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_umin_vec:
|
|
tcg_out_insn(s, 3616, UMIN, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_not_vec:
|
|
tcg_out_insn(s, 3617, NOT, is_q, 0, a0, a1);
|
|
break;
|
|
case INDEX_op_shli_vec:
|
|
tcg_out_insn(s, 3614, SHL, is_q, a0, a1, a2 + (8 << vece));
|
|
break;
|
|
case INDEX_op_shri_vec:
|
|
tcg_out_insn(s, 3614, USHR, is_q, a0, a1, (16 << vece) - a2);
|
|
break;
|
|
case INDEX_op_sari_vec:
|
|
tcg_out_insn(s, 3614, SSHR, is_q, a0, a1, (16 << vece) - a2);
|
|
break;
|
|
case INDEX_op_shlv_vec:
|
|
tcg_out_insn(s, 3616, USHL, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_aa64_sshl_vec:
|
|
tcg_out_insn(s, 3616, SSHL, is_q, vece, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_cmp_vec:
|
|
{
|
|
TCGCond cond = args[3];
|
|
AArch64Insn insn;
|
|
|
|
if (cond == TCG_COND_NE) {
|
|
if (const_args[2]) {
|
|
tcg_out_insn(s, 3616, CMTST, is_q, vece, a0, a1, a1);
|
|
} else {
|
|
tcg_out_insn(s, 3616, CMEQ, is_q, vece, a0, a1, a2);
|
|
tcg_out_insn(s, 3617, NOT, is_q, 0, a0, a0);
|
|
}
|
|
} else {
|
|
if (const_args[2]) {
|
|
insn = cmp0_insn[cond];
|
|
if (insn) {
|
|
tcg_out_insn_3617(s, insn, is_q, vece, a0, a1);
|
|
break;
|
|
}
|
|
tcg_out_dupi_vec(s, type, TCG_VEC_TMP, 0);
|
|
a2 = TCG_VEC_TMP;
|
|
}
|
|
insn = cmp_insn[cond];
|
|
if (insn == 0) {
|
|
TCGArg t;
|
|
t = a1, a1 = a2, a2 = t;
|
|
cond = tcg_swap_cond(cond);
|
|
insn = cmp_insn[cond];
|
|
tcg_debug_assert(insn != 0);
|
|
}
|
|
tcg_out_insn_3616(s, insn, is_q, vece, a0, a1, a2);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_bitsel_vec:
|
|
a3 = args[3];
|
|
if (a0 == a3) {
|
|
tcg_out_insn(s, 3616, BIT, is_q, 0, a0, a2, a1);
|
|
} else if (a0 == a2) {
|
|
tcg_out_insn(s, 3616, BIF, is_q, 0, a0, a3, a1);
|
|
} else {
|
|
if (a0 != a1) {
|
|
tcg_out_mov(s, type, a0, a1);
|
|
}
|
|
tcg_out_insn(s, 3616, BSL, is_q, 0, a0, a2, a3);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_mov_vec: /* Always emitted via tcg_out_mov. */
|
|
case INDEX_op_dupi_vec: /* Always emitted via tcg_out_movi. */
|
|
case INDEX_op_dup_vec: /* Always emitted via tcg_out_dup_vec. */
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece)
|
|
{
|
|
switch (opc) {
|
|
case INDEX_op_add_vec:
|
|
case INDEX_op_sub_vec:
|
|
case INDEX_op_and_vec:
|
|
case INDEX_op_or_vec:
|
|
case INDEX_op_xor_vec:
|
|
case INDEX_op_andc_vec:
|
|
case INDEX_op_orc_vec:
|
|
case INDEX_op_neg_vec:
|
|
case INDEX_op_abs_vec:
|
|
case INDEX_op_not_vec:
|
|
case INDEX_op_cmp_vec:
|
|
case INDEX_op_shli_vec:
|
|
case INDEX_op_shri_vec:
|
|
case INDEX_op_sari_vec:
|
|
case INDEX_op_ssadd_vec:
|
|
case INDEX_op_sssub_vec:
|
|
case INDEX_op_usadd_vec:
|
|
case INDEX_op_ussub_vec:
|
|
case INDEX_op_shlv_vec:
|
|
case INDEX_op_bitsel_vec:
|
|
return 1;
|
|
case INDEX_op_shrv_vec:
|
|
case INDEX_op_sarv_vec:
|
|
return -1;
|
|
case INDEX_op_mul_vec:
|
|
case INDEX_op_smax_vec:
|
|
case INDEX_op_smin_vec:
|
|
case INDEX_op_umax_vec:
|
|
case INDEX_op_umin_vec:
|
|
return vece < MO_64;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece,
|
|
TCGArg a0, ...)
|
|
{
|
|
va_list va;
|
|
TCGv_vec v0, v1, v2, t1;
|
|
|
|
va_start(va, a0);
|
|
v0 = temp_tcgv_vec(arg_temp(a0));
|
|
v1 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg)));
|
|
v2 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg)));
|
|
|
|
switch (opc) {
|
|
case INDEX_op_shrv_vec:
|
|
case INDEX_op_sarv_vec:
|
|
/* Right shifts are negative left shifts for AArch64. */
|
|
t1 = tcg_temp_new_vec(type);
|
|
tcg_gen_neg_vec(vece, t1, v2);
|
|
opc = (opc == INDEX_op_shrv_vec
|
|
? INDEX_op_shlv_vec : INDEX_op_aa64_sshl_vec);
|
|
vec_gen_3(opc, type, vece, tcgv_vec_arg(v0),
|
|
tcgv_vec_arg(v1), tcgv_vec_arg(t1));
|
|
tcg_temp_free_vec(t1);
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
va_end(va);
|
|
}
|
|
|
|
static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op)
|
|
{
|
|
static const TCGTargetOpDef r = { .args_ct_str = { "r" } };
|
|
static const TCGTargetOpDef r_r = { .args_ct_str = { "r", "r" } };
|
|
static const TCGTargetOpDef w_w = { .args_ct_str = { "w", "w" } };
|
|
static const TCGTargetOpDef w_r = { .args_ct_str = { "w", "r" } };
|
|
static const TCGTargetOpDef w_wr = { .args_ct_str = { "w", "wr" } };
|
|
static const TCGTargetOpDef r_l = { .args_ct_str = { "r", "l" } };
|
|
static const TCGTargetOpDef r_rA = { .args_ct_str = { "r", "rA" } };
|
|
static const TCGTargetOpDef rZ_r = { .args_ct_str = { "rZ", "r" } };
|
|
static const TCGTargetOpDef lZ_l = { .args_ct_str = { "lZ", "l" } };
|
|
static const TCGTargetOpDef r_r_r = { .args_ct_str = { "r", "r", "r" } };
|
|
static const TCGTargetOpDef w_w_w = { .args_ct_str = { "w", "w", "w" } };
|
|
static const TCGTargetOpDef w_w_wO = { .args_ct_str = { "w", "w", "wO" } };
|
|
static const TCGTargetOpDef w_w_wN = { .args_ct_str = { "w", "w", "wN" } };
|
|
static const TCGTargetOpDef w_w_wZ = { .args_ct_str = { "w", "w", "wZ" } };
|
|
static const TCGTargetOpDef r_r_ri = { .args_ct_str = { "r", "r", "ri" } };
|
|
static const TCGTargetOpDef r_r_rA = { .args_ct_str = { "r", "r", "rA" } };
|
|
static const TCGTargetOpDef r_r_rL = { .args_ct_str = { "r", "r", "rL" } };
|
|
static const TCGTargetOpDef r_r_rAL
|
|
= { .args_ct_str = { "r", "r", "rAL" } };
|
|
static const TCGTargetOpDef dep
|
|
= { .args_ct_str = { "r", "0", "rZ" } };
|
|
static const TCGTargetOpDef ext2
|
|
= { .args_ct_str = { "r", "rZ", "rZ" } };
|
|
static const TCGTargetOpDef movc
|
|
= { .args_ct_str = { "r", "r", "rA", "rZ", "rZ" } };
|
|
static const TCGTargetOpDef add2
|
|
= { .args_ct_str = { "r", "r", "rZ", "rZ", "rA", "rMZ" } };
|
|
static const TCGTargetOpDef w_w_w_w
|
|
= { .args_ct_str = { "w", "w", "w", "w" } };
|
|
|
|
switch (op) {
|
|
case INDEX_op_goto_ptr:
|
|
return &r;
|
|
|
|
case INDEX_op_ld8u_i32:
|
|
case INDEX_op_ld8s_i32:
|
|
case INDEX_op_ld16u_i32:
|
|
case INDEX_op_ld16s_i32:
|
|
case INDEX_op_ld_i32:
|
|
case INDEX_op_ld8u_i64:
|
|
case INDEX_op_ld8s_i64:
|
|
case INDEX_op_ld16u_i64:
|
|
case INDEX_op_ld16s_i64:
|
|
case INDEX_op_ld32u_i64:
|
|
case INDEX_op_ld32s_i64:
|
|
case INDEX_op_ld_i64:
|
|
case INDEX_op_neg_i32:
|
|
case INDEX_op_neg_i64:
|
|
case INDEX_op_not_i32:
|
|
case INDEX_op_not_i64:
|
|
case INDEX_op_bswap16_i32:
|
|
case INDEX_op_bswap32_i32:
|
|
case INDEX_op_bswap16_i64:
|
|
case INDEX_op_bswap32_i64:
|
|
case INDEX_op_bswap64_i64:
|
|
case INDEX_op_ext8s_i32:
|
|
case INDEX_op_ext16s_i32:
|
|
case INDEX_op_ext8u_i32:
|
|
case INDEX_op_ext16u_i32:
|
|
case INDEX_op_ext8s_i64:
|
|
case INDEX_op_ext16s_i64:
|
|
case INDEX_op_ext32s_i64:
|
|
case INDEX_op_ext8u_i64:
|
|
case INDEX_op_ext16u_i64:
|
|
case INDEX_op_ext32u_i64:
|
|
case INDEX_op_ext_i32_i64:
|
|
case INDEX_op_extu_i32_i64:
|
|
case INDEX_op_extract_i32:
|
|
case INDEX_op_extract_i64:
|
|
case INDEX_op_sextract_i32:
|
|
case INDEX_op_sextract_i64:
|
|
return &r_r;
|
|
|
|
case INDEX_op_st8_i32:
|
|
case INDEX_op_st16_i32:
|
|
case INDEX_op_st_i32:
|
|
case INDEX_op_st8_i64:
|
|
case INDEX_op_st16_i64:
|
|
case INDEX_op_st32_i64:
|
|
case INDEX_op_st_i64:
|
|
return &rZ_r;
|
|
|
|
case INDEX_op_add_i32:
|
|
case INDEX_op_add_i64:
|
|
case INDEX_op_sub_i32:
|
|
case INDEX_op_sub_i64:
|
|
case INDEX_op_setcond_i32:
|
|
case INDEX_op_setcond_i64:
|
|
return &r_r_rA;
|
|
|
|
case INDEX_op_mul_i32:
|
|
case INDEX_op_mul_i64:
|
|
case INDEX_op_div_i32:
|
|
case INDEX_op_div_i64:
|
|
case INDEX_op_divu_i32:
|
|
case INDEX_op_divu_i64:
|
|
case INDEX_op_rem_i32:
|
|
case INDEX_op_rem_i64:
|
|
case INDEX_op_remu_i32:
|
|
case INDEX_op_remu_i64:
|
|
case INDEX_op_muluh_i64:
|
|
case INDEX_op_mulsh_i64:
|
|
return &r_r_r;
|
|
|
|
case INDEX_op_and_i32:
|
|
case INDEX_op_and_i64:
|
|
case INDEX_op_or_i32:
|
|
case INDEX_op_or_i64:
|
|
case INDEX_op_xor_i32:
|
|
case INDEX_op_xor_i64:
|
|
case INDEX_op_andc_i32:
|
|
case INDEX_op_andc_i64:
|
|
case INDEX_op_orc_i32:
|
|
case INDEX_op_orc_i64:
|
|
case INDEX_op_eqv_i32:
|
|
case INDEX_op_eqv_i64:
|
|
return &r_r_rL;
|
|
|
|
case INDEX_op_shl_i32:
|
|
case INDEX_op_shr_i32:
|
|
case INDEX_op_sar_i32:
|
|
case INDEX_op_rotl_i32:
|
|
case INDEX_op_rotr_i32:
|
|
case INDEX_op_shl_i64:
|
|
case INDEX_op_shr_i64:
|
|
case INDEX_op_sar_i64:
|
|
case INDEX_op_rotl_i64:
|
|
case INDEX_op_rotr_i64:
|
|
return &r_r_ri;
|
|
|
|
case INDEX_op_clz_i32:
|
|
case INDEX_op_ctz_i32:
|
|
case INDEX_op_clz_i64:
|
|
case INDEX_op_ctz_i64:
|
|
return &r_r_rAL;
|
|
|
|
case INDEX_op_brcond_i32:
|
|
case INDEX_op_brcond_i64:
|
|
return &r_rA;
|
|
|
|
case INDEX_op_movcond_i32:
|
|
case INDEX_op_movcond_i64:
|
|
return &movc;
|
|
|
|
case INDEX_op_qemu_ld_i32:
|
|
case INDEX_op_qemu_ld_i64:
|
|
return &r_l;
|
|
case INDEX_op_qemu_st_i32:
|
|
case INDEX_op_qemu_st_i64:
|
|
return &lZ_l;
|
|
|
|
case INDEX_op_deposit_i32:
|
|
case INDEX_op_deposit_i64:
|
|
return &dep;
|
|
|
|
case INDEX_op_extract2_i32:
|
|
case INDEX_op_extract2_i64:
|
|
return &ext2;
|
|
|
|
case INDEX_op_add2_i32:
|
|
case INDEX_op_add2_i64:
|
|
case INDEX_op_sub2_i32:
|
|
case INDEX_op_sub2_i64:
|
|
return &add2;
|
|
|
|
case INDEX_op_add_vec:
|
|
case INDEX_op_sub_vec:
|
|
case INDEX_op_mul_vec:
|
|
case INDEX_op_xor_vec:
|
|
case INDEX_op_ssadd_vec:
|
|
case INDEX_op_sssub_vec:
|
|
case INDEX_op_usadd_vec:
|
|
case INDEX_op_ussub_vec:
|
|
case INDEX_op_smax_vec:
|
|
case INDEX_op_smin_vec:
|
|
case INDEX_op_umax_vec:
|
|
case INDEX_op_umin_vec:
|
|
case INDEX_op_shlv_vec:
|
|
case INDEX_op_shrv_vec:
|
|
case INDEX_op_sarv_vec:
|
|
case INDEX_op_aa64_sshl_vec:
|
|
return &w_w_w;
|
|
case INDEX_op_not_vec:
|
|
case INDEX_op_neg_vec:
|
|
case INDEX_op_abs_vec:
|
|
case INDEX_op_shli_vec:
|
|
case INDEX_op_shri_vec:
|
|
case INDEX_op_sari_vec:
|
|
return &w_w;
|
|
case INDEX_op_ld_vec:
|
|
case INDEX_op_st_vec:
|
|
case INDEX_op_dupm_vec:
|
|
return &w_r;
|
|
case INDEX_op_dup_vec:
|
|
return &w_wr;
|
|
case INDEX_op_or_vec:
|
|
case INDEX_op_andc_vec:
|
|
return &w_w_wO;
|
|
case INDEX_op_and_vec:
|
|
case INDEX_op_orc_vec:
|
|
return &w_w_wN;
|
|
case INDEX_op_cmp_vec:
|
|
return &w_w_wZ;
|
|
case INDEX_op_bitsel_vec:
|
|
return &w_w_w_w;
|
|
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void tcg_target_init(TCGContext *s)
|
|
{
|
|
tcg_target_available_regs[TCG_TYPE_I32] = 0xffffffffu;
|
|
tcg_target_available_regs[TCG_TYPE_I64] = 0xffffffffu;
|
|
tcg_target_available_regs[TCG_TYPE_V64] = 0xffffffff00000000ull;
|
|
tcg_target_available_regs[TCG_TYPE_V128] = 0xffffffff00000000ull;
|
|
|
|
tcg_target_call_clobber_regs = -1ull;
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X19);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X20);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X21);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X22);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X23);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X24);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X25);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X26);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X27);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X28);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_X29);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V8);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V9);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V10);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V11);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V12);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V13);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V14);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V15);
|
|
|
|
s->reserved_regs = 0;
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_FP);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_X18); /* platform register */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP);
|
|
}
|
|
|
|
/* Saving pairs: (X19, X20) .. (X27, X28), (X29(fp), X30(lr)). */
|
|
#define PUSH_SIZE ((30 - 19 + 1) * 8)
|
|
|
|
#define FRAME_SIZE \
|
|
((PUSH_SIZE \
|
|
+ TCG_STATIC_CALL_ARGS_SIZE \
|
|
+ CPU_TEMP_BUF_NLONGS * sizeof(long) \
|
|
+ TCG_TARGET_STACK_ALIGN - 1) \
|
|
& ~(TCG_TARGET_STACK_ALIGN - 1))
|
|
|
|
/* We're expecting a 2 byte uleb128 encoded value. */
|
|
QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14));
|
|
|
|
/* We're expecting to use a single ADDI insn. */
|
|
QEMU_BUILD_BUG_ON(FRAME_SIZE - PUSH_SIZE > 0xfff);
|
|
|
|
static void tcg_target_qemu_prologue(TCGContext *s)
|
|
{
|
|
TCGReg r;
|
|
|
|
/* Push (FP, LR) and allocate space for all saved registers. */
|
|
tcg_out_insn(s, 3314, STP, TCG_REG_FP, TCG_REG_LR,
|
|
TCG_REG_SP, -PUSH_SIZE, 1, 1);
|
|
|
|
/* Set up frame pointer for canonical unwinding. */
|
|
tcg_out_movr_sp(s, TCG_TYPE_I64, TCG_REG_FP, TCG_REG_SP);
|
|
|
|
/* Store callee-preserved regs x19..x28. */
|
|
for (r = TCG_REG_X19; r <= TCG_REG_X27; r += 2) {
|
|
int ofs = (r - TCG_REG_X19 + 2) * 8;
|
|
tcg_out_insn(s, 3314, STP, r, r + 1, TCG_REG_SP, ofs, 1, 0);
|
|
}
|
|
|
|
/* Make stack space for TCG locals. */
|
|
tcg_out_insn(s, 3401, SUBI, TCG_TYPE_I64, TCG_REG_SP, TCG_REG_SP,
|
|
FRAME_SIZE - PUSH_SIZE);
|
|
|
|
/* Inform TCG about how to find TCG locals with register, offset, size. */
|
|
tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE,
|
|
CPU_TEMP_BUF_NLONGS * sizeof(long));
|
|
|
|
#if !defined(CONFIG_SOFTMMU)
|
|
if (USE_GUEST_BASE) {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_GUEST_BASE, guest_base);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_GUEST_BASE);
|
|
}
|
|
#endif
|
|
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
|
|
tcg_out_insn(s, 3207, BR, tcg_target_call_iarg_regs[1]);
|
|
|
|
/*
|
|
* Return path for goto_ptr. Set return value to 0, a-la exit_tb,
|
|
* and fall through to the rest of the epilogue.
|
|
*/
|
|
s->code_gen_epilogue = s->code_ptr;
|
|
tcg_out_movi(s, TCG_TYPE_REG, TCG_REG_X0, 0);
|
|
|
|
/* TB epilogue */
|
|
tb_ret_addr = s->code_ptr;
|
|
|
|
/* Remove TCG locals stack space. */
|
|
tcg_out_insn(s, 3401, ADDI, TCG_TYPE_I64, TCG_REG_SP, TCG_REG_SP,
|
|
FRAME_SIZE - PUSH_SIZE);
|
|
|
|
/* Restore registers x19..x28. */
|
|
for (r = TCG_REG_X19; r <= TCG_REG_X27; r += 2) {
|
|
int ofs = (r - TCG_REG_X19 + 2) * 8;
|
|
tcg_out_insn(s, 3314, LDP, r, r + 1, TCG_REG_SP, ofs, 1, 0);
|
|
}
|
|
|
|
/* Pop (FP, LR), restore SP to previous frame. */
|
|
tcg_out_insn(s, 3314, LDP, TCG_REG_FP, TCG_REG_LR,
|
|
TCG_REG_SP, PUSH_SIZE, 0, 1);
|
|
tcg_out_insn(s, 3207, RET, TCG_REG_LR);
|
|
}
|
|
|
|
static void tcg_out_nop_fill(tcg_insn_unit *p, int count)
|
|
{
|
|
int i;
|
|
for (i = 0; i < count; ++i) {
|
|
p[i] = NOP;
|
|
}
|
|
}
|
|
|
|
typedef struct {
|
|
DebugFrameHeader h;
|
|
uint8_t fde_def_cfa[4];
|
|
uint8_t fde_reg_ofs[24];
|
|
} DebugFrame;
|
|
|
|
#define ELF_HOST_MACHINE EM_AARCH64
|
|
|
|
static const DebugFrame debug_frame = {
|
|
.h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */
|
|
.h.cie.id = -1,
|
|
.h.cie.version = 1,
|
|
.h.cie.code_align = 1,
|
|
.h.cie.data_align = 0x78, /* sleb128 -8 */
|
|
.h.cie.return_column = TCG_REG_LR,
|
|
|
|
/* Total FDE size does not include the "len" member. */
|
|
.h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset),
|
|
|
|
.fde_def_cfa = {
|
|
12, TCG_REG_SP, /* DW_CFA_def_cfa sp, ... */
|
|
(FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
|
|
(FRAME_SIZE >> 7)
|
|
},
|
|
.fde_reg_ofs = {
|
|
0x80 + 28, 1, /* DW_CFA_offset, x28, -8 */
|
|
0x80 + 27, 2, /* DW_CFA_offset, x27, -16 */
|
|
0x80 + 26, 3, /* DW_CFA_offset, x26, -24 */
|
|
0x80 + 25, 4, /* DW_CFA_offset, x25, -32 */
|
|
0x80 + 24, 5, /* DW_CFA_offset, x24, -40 */
|
|
0x80 + 23, 6, /* DW_CFA_offset, x23, -48 */
|
|
0x80 + 22, 7, /* DW_CFA_offset, x22, -56 */
|
|
0x80 + 21, 8, /* DW_CFA_offset, x21, -64 */
|
|
0x80 + 20, 9, /* DW_CFA_offset, x20, -72 */
|
|
0x80 + 19, 10, /* DW_CFA_offset, x1p, -80 */
|
|
0x80 + 30, 11, /* DW_CFA_offset, lr, -88 */
|
|
0x80 + 29, 12, /* DW_CFA_offset, fp, -96 */
|
|
}
|
|
};
|
|
|
|
void tcg_register_jit(void *buf, size_t buf_size)
|
|
{
|
|
tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
|
|
}
|