import Unicorn2

qemu/target/arm/translate-a64.h

@@ -0,0 +1,129 @@
+/*
+ *  AArch64 translation, common definitions.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TARGET_ARM_TRANSLATE_A64_H
+#define TARGET_ARM_TRANSLATE_A64_H
+
+void unallocated_encoding(DisasContext *s);
+typedef struct TCGContext TCGContext;
+
+#define unsupported_encoding(s, insn)                                    \
+    do {                                                                 \
+        qemu_log_mask(LOG_UNIMP,                                         \
+                      "%s:%d: unsupported instruction encoding 0x%08x "  \
+                      "at pc=%016" PRIx64 "\n",                          \
+                      __FILE__, __LINE__, insn, s->pc_curr);             \
+        unallocated_encoding(s);                                         \
+    } while (0)
+
+TCGv_i64 new_tmp_a64(DisasContext *s);
+TCGv_i64 new_tmp_a64_zero(DisasContext *s);
+TCGv_i64 cpu_reg(DisasContext *s, int reg);
+TCGv_i64 cpu_reg_sp(DisasContext *s, int reg);
+TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int sf);
+TCGv_i64 read_cpu_reg_sp(DisasContext *s, int reg, int sf);
+void write_fp_dreg(DisasContext *s, int reg, TCGv_i64 v);
+TCGv_ptr get_fpstatus_ptr(TCGContext *tcg_ctx, bool);
+bool logic_imm_decode_wmask(uint64_t *result, unsigned int immn,
+                            unsigned int imms, unsigned int immr);
+bool sve_access_check(DisasContext *s);
+
+/* We should have at some point before trying to access an FP register
+ * done the necessary access check, so assert that
+ * (a) we did the check and
+ * (b) we didn't then just plough ahead anyway if it failed.
+ * Print the instruction pattern in the abort message so we can figure
+ * out what we need to fix if a user encounters this problem in the wild.
+ */
+static inline void assert_fp_access_checked(DisasContext *s)
+{
+#ifdef CONFIG_DEBUG_TCG
+    if (unlikely(!s->fp_access_checked || s->fp_excp_el)) {
+        fprintf(stderr, "target-arm: FP access check missing for "
+                "instruction 0x%08x\n", s->insn);
+        abort();
+    }
+#endif
+}
+
+/* Return the offset into CPUARMState of an element of specified
+ * size, 'element' places in from the least significant end of
+ * the FP/vector register Qn.
+ */
+static inline int vec_reg_offset(DisasContext *s, int regno,
+                                 int element, MemOp size)
+{
+    int element_size = 1 << size;
+    int offs = element * element_size;
+#ifdef HOST_WORDS_BIGENDIAN
+    /* This is complicated slightly because vfp.zregs[n].d[0] is
+     * still the lowest and vfp.zregs[n].d[15] the highest of the
+     * 256 byte vector, even on big endian systems.
+     *
+     * Calculate the offset assuming fully little-endian,
+     * then XOR to account for the order of the 8-byte units.
+     *
+     * For 16 byte elements, the two 8 byte halves will not form a
+     * host int128 if the host is bigendian, since they're in the
+     * wrong order.  However the only 16 byte operation we have is
+     * a move, so we can ignore this for the moment.  More complicated
+     * operations will have to special case loading and storing from
+     * the zregs array.
+     */
+    if (element_size < 8) {
+        offs ^= 8 - element_size;
+    }
+#endif
+    offs += offsetof(CPUARMState, vfp.zregs[regno]);
+    assert_fp_access_checked(s);
+    return offs;
+}
+
+/* Return the offset info CPUARMState of the "whole" vector register Qn.  */
+static inline int vec_full_reg_offset(DisasContext *s, int regno)
+{
+    assert_fp_access_checked(s);
+    return offsetof(CPUARMState, vfp.zregs[regno]);
+}
+
+/* Return a newly allocated pointer to the vector register.  */
+static inline TCGv_ptr vec_full_reg_ptr(DisasContext *s, int regno)
+{
+    TCGContext *tcg_ctx = s->uc->tcg_ctx;
+    TCGv_ptr ret = tcg_temp_new_ptr(tcg_ctx);
+    tcg_gen_addi_ptr(tcg_ctx, ret, tcg_ctx->cpu_env, vec_full_reg_offset(s, regno));
+    return ret;
+}
+
+/* Return the byte size of the "whole" vector register, VL / 8.  */
+static inline int vec_full_reg_size(DisasContext *s)
+{
+    return s->sve_len;
+}
+
+bool disas_sve(DisasContext *, uint32_t);
+
+/* Note that the gvec expanders operate on offsets + sizes.  */
+typedef void GVecGen2Fn(TCGContext *, unsigned, uint32_t, uint32_t, uint32_t, uint32_t);
+typedef void GVecGen2iFn(TCGContext *, unsigned, uint32_t, uint32_t, int64_t,
+                         uint32_t, uint32_t);
+typedef void GVecGen3Fn(TCGContext *, unsigned, uint32_t, uint32_t,
+                        uint32_t, uint32_t, uint32_t);
+typedef void GVecGen4Fn(TCGContext *, unsigned, uint32_t, uint32_t, uint32_t,
+                        uint32_t, uint32_t, uint32_t);
+
+#endif /* TARGET_ARM_TRANSLATE_A64_H */