#define TCG_CT_CONST_LIMM 0x200
#define TCG_CT_CONST_ZERO 0x400
#define TCG_CT_CONST_MONE 0x800
+#define TCG_CT_CONST_ORRI 0x1000
+#define TCG_CT_CONST_ANDI 0x2000
/* parse target specific constraints */
static const char *target_parse_constraint(TCGArgConstraint *ct,
case 'M': /* minus one */
ct->ct |= TCG_CT_CONST_MONE;
break;
+ case 'O': /* vector orr/bic immediate */
+ ct->ct |= TCG_CT_CONST_ORRI;
+ break;
+ case 'N': /* vector orr/bic immediate, inverted */
+ ct->ct |= TCG_CT_CONST_ANDI;
+ break;
case 'Z': /* zero */
ct->ct |= TCG_CT_CONST_ZERO;
break;
return (val & (val - 1)) == 0;
}
-/* Match a constant that is valid for vectors. */
-static bool is_fimm(uint64_t v64, int *op, int *cmode, int *imm8)
+/* Return true if v16 is a valid 16-bit shifted immediate. */
+static bool is_shimm16(uint16_t v16, int *cmode, int *imm8)
{
- int i;
+ if (v16 == (v16 & 0xff)) {
+ *cmode = 0x8;
+ *imm8 = v16 & 0xff;
+ return true;
+ } else if (v16 == (v16 & 0xff00)) {
+ *cmode = 0xa;
+ *imm8 = v16 >> 8;
+ return true;
+ }
+ return false;
+}
- *op = 0;
- /* Match replication across 8 bits. */
- if (v64 == dup_const(MO_8, v64)) {
- *cmode = 0xe;
- *imm8 = v64 & 0xff;
+/* Return true if v32 is a valid 32-bit shifted immediate. */
+static bool is_shimm32(uint32_t v32, int *cmode, int *imm8)
+{
+ if (v32 == (v32 & 0xff)) {
+ *cmode = 0x0;
+ *imm8 = v32 & 0xff;
+ return true;
+ } else if (v32 == (v32 & 0xff00)) {
+ *cmode = 0x2;
+ *imm8 = (v32 >> 8) & 0xff;
+ return true;
+ } else if (v32 == (v32 & 0xff0000)) {
+ *cmode = 0x4;
+ *imm8 = (v32 >> 16) & 0xff;
+ return true;
+ } else if (v32 == (v32 & 0xff000000)) {
+ *cmode = 0x6;
+ *imm8 = v32 >> 24;
return true;
}
- /* Match replication across 16 bits. */
- if (v64 == dup_const(MO_16, v64)) {
- uint16_t v16 = v64;
+ return false;
+}
- if (v16 == (v16 & 0xff)) {
- *cmode = 0x8;
- *imm8 = v16 & 0xff;
- return true;
- } else if (v16 == (v16 & 0xff00)) {
- *cmode = 0xa;
- *imm8 = v16 >> 8;
- return true;
- }
+/* Return true if v32 is a valid 32-bit shifting ones immediate. */
+static bool is_soimm32(uint32_t v32, int *cmode, int *imm8)
+{
+ if ((v32 & 0xffff00ff) == 0xff) {
+ *cmode = 0xc;
+ *imm8 = (v32 >> 8) & 0xff;
+ return true;
+ } else if ((v32 & 0xff00ffff) == 0xffff) {
+ *cmode = 0xd;
+ *imm8 = (v32 >> 16) & 0xff;
+ return true;
}
- /* Match replication across 32 bits. */
- if (v64 == dup_const(MO_32, v64)) {
- uint32_t v32 = v64;
+ return false;
+}
- if (v32 == (v32 & 0xff)) {
- *cmode = 0x0;
- *imm8 = v32 & 0xff;
- return true;
- } else if (v32 == (v32 & 0xff00)) {
- *cmode = 0x2;
- *imm8 = (v32 >> 8) & 0xff;
- return true;
- } else if (v32 == (v32 & 0xff0000)) {
- *cmode = 0x4;
- *imm8 = (v32 >> 16) & 0xff;
- return true;
- } else if (v32 == (v32 & 0xff000000)) {
- *cmode = 0x6;
- *imm8 = v32 >> 24;
- return true;
- } else if ((v32 & 0xffff00ff) == 0xff) {
- *cmode = 0xc;
- *imm8 = (v32 >> 8) & 0xff;
- return true;
- } else if ((v32 & 0xff00ffff) == 0xffff) {
- *cmode = 0xd;
- *imm8 = (v32 >> 16) & 0xff;
- return true;
- }
- /* Match forms of a float32. */
- if (extract32(v32, 0, 19) == 0
- && (extract32(v32, 25, 6) == 0x20
- || extract32(v32, 25, 6) == 0x1f)) {
- *cmode = 0xf;
- *imm8 = (extract32(v32, 31, 1) << 7)
- | (extract32(v32, 25, 1) << 6)
- | extract32(v32, 19, 6);
- return true;
- }
+/* Return true if v32 is a valid float32 immediate. */
+static bool is_fimm32(uint32_t v32, int *cmode, int *imm8)
+{
+ if (extract32(v32, 0, 19) == 0
+ && (extract32(v32, 25, 6) == 0x20
+ || extract32(v32, 25, 6) == 0x1f)) {
+ *cmode = 0xf;
+ *imm8 = (extract32(v32, 31, 1) << 7)
+ | (extract32(v32, 25, 1) << 6)
+ | extract32(v32, 19, 6);
+ return true;
}
- /* Match forms of a float64. */
+ return false;
+}
+
+/* Return true if v64 is a valid float64 immediate. */
+static bool is_fimm64(uint64_t v64, int *cmode, int *imm8)
+{
if (extract64(v64, 0, 48) == 0
&& (extract64(v64, 54, 9) == 0x100
|| extract64(v64, 54, 9) == 0x0ff)) {
*cmode = 0xf;
- *op = 1;
*imm8 = (extract64(v64, 63, 1) << 7)
| (extract64(v64, 54, 1) << 6)
| extract64(v64, 48, 6);
return true;
}
- /* Match bytes of 0x00 and 0xff. */
- for (i = 0; i < 64; i += 8) {
- uint64_t byte = extract64(v64, i, 8);
- if (byte != 0 && byte != 0xff) {
+ return false;
+}
+
+/*
+ * Return non-zero if v32 can be formed by MOVI+ORR.
+ * Place the parameters for MOVI in (cmode, imm8).
+ * Return the cmode for ORR; the imm8 can be had via extraction from v32.
+ */
+static int is_shimm32_pair(uint32_t v32, int *cmode, int *imm8)
+{
+ int i;
+
+ for (i = 6; i > 0; i -= 2) {
+ /* Mask out one byte we can add with ORR. */
+ uint32_t tmp = v32 & ~(0xffu << (i * 4));
+ if (is_shimm32(tmp, cmode, imm8) ||
+ is_soimm32(tmp, cmode, imm8)) {
break;
}
}
- if (i == 64) {
- *cmode = 0xe;
- *op = 1;
- *imm8 = (extract64(v64, 0, 1) << 0)
- | (extract64(v64, 8, 1) << 1)
- | (extract64(v64, 16, 1) << 2)
- | (extract64(v64, 24, 1) << 3)
- | (extract64(v64, 32, 1) << 4)
- | (extract64(v64, 40, 1) << 5)
- | (extract64(v64, 48, 1) << 6)
- | (extract64(v64, 56, 1) << 7);
- return true;
+ return i;
+}
+
+/* Return true if V is a valid 16-bit or 32-bit shifted immediate. */
+static bool is_shimm1632(uint32_t v32, int *cmode, int *imm8)
+{
+ if (v32 == deposit32(v32, 16, 16, v32)) {
+ return is_shimm16(v32, cmode, imm8);
+ } else {
+ return is_shimm32(v32, cmode, imm8);
}
- return false;
}
static int tcg_target_const_match(tcg_target_long val, TCGType type,
return 1;
}
+ switch (ct & (TCG_CT_CONST_ORRI | TCG_CT_CONST_ANDI)) {
+ case 0:
+ break;
+ case TCG_CT_CONST_ANDI:
+ val = ~val;
+ /* fallthru */
+ case TCG_CT_CONST_ORRI:
+ if (val == deposit64(val, 32, 32, val)) {
+ int cmode, imm8;
+ return is_shimm1632(val, &cmode, &imm8);
+ }
+ break;
+ default:
+ /* Both bits should not be set for the same insn. */
+ g_assert_not_reached();
+ }
+
return 0;
}
/* AdvSIMD modified immediate */
I3606_MOVI = 0x0f000400,
+ I3606_MVNI = 0x2f000400,
+ I3606_BIC = 0x2f001400,
+ I3606_ORR = 0x0f001400,
/* AdvSIMD shift by immediate */
I3614_SSHR = 0x0f000400,
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,
static void tcg_out_dupi_vec(TCGContext *s, TCGType type,
TCGReg rd, tcg_target_long v64)
{
- int op, cmode, imm8;
+ bool q = type == TCG_TYPE_V128;
+ int cmode, imm8, i;
- if (is_fimm(v64, &op, &cmode, &imm8)) {
- tcg_out_insn(s, 3606, MOVI, type == TCG_TYPE_V128, rd, op, cmode, imm8);
- } else if (type == TCG_TYPE_V128) {
+ /* 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 {
label->label_ptr[0] = label_ptr;
}
-/* We expect tlb_mask to be before tlb_table. */
-QEMU_BUILD_BUG_ON(offsetof(CPUArchState, tlb_table) <
- offsetof(CPUArchState, tlb_mask));
+/* 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);
-/* We expect to use a 24-bit unsigned offset from ENV. */
-QEMU_BUILD_BUG_ON(offsetof(CPUArchState, tlb_table[NB_MMU_MODES - 1])
- > 0xffffff);
+/* 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
tcg_insn_unit **label_ptr, int mem_index,
bool is_read)
{
- int mask_ofs = offsetof(CPUArchState, tlb_mask[mem_index]);
- int table_ofs = offsetof(CPUArchState, tlb_table[mem_index]);
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 mask_base = TCG_AREG0, table_base = TCG_AREG0, x3;
+ TCGReg x3;
TCGType mask_type;
uint64_t compare_mask;
- if (table_ofs > 0xfff) {
- int table_hi = table_ofs & ~0xfff;
- int mask_hi = mask_ofs & ~0xfff;
-
- table_base = TCG_REG_X1;
- if (mask_hi == table_hi) {
- mask_base = table_base;
- } else if (mask_hi) {
- mask_base = TCG_REG_X0;
- tcg_out_insn(s, 3401, ADDI, TCG_TYPE_I64,
- mask_base, TCG_AREG0, mask_hi);
- }
- tcg_out_insn(s, 3401, ADDI, TCG_TYPE_I64,
- table_base, TCG_AREG0, table_hi);
- mask_ofs -= mask_hi;
- table_ofs -= table_hi;
- }
-
mask_type = (TARGET_PAGE_BITS + CPU_TLB_DYN_MAX_BITS > 32
? TCG_TYPE_I64 : TCG_TYPE_I32);
- /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */
- tcg_out_ld(s, mask_type, TCG_REG_X0, mask_base, mask_ofs);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_X1, table_base, table_ofs);
+ /* 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,
TCGType type = vecl + TCG_TYPE_V64;
unsigned is_q = vecl;
- TCGArg a0, a1, a2;
+ TCGArg a0, a1, a2, a3;
+ int cmode, imm8;
a0 = args[0];
a1 = args[1];
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_xor_vec:
- tcg_out_insn(s, 3616, EOR, 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;
}
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. */
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:
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" } };
= { .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:
case INDEX_op_add_vec:
case INDEX_op_sub_vec:
case INDEX_op_mul_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_ssadd_vec:
case INDEX_op_sssub_vec:
case INDEX_op_usadd_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;
projects / mirror_qemu.git / blobdiff