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[Qemu-arm] [PATCH v2 02/67] target/arm: Introduce translate-a64.h
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From: |
Richard Henderson |
|
Subject: |
[Qemu-arm] [PATCH v2 02/67] target/arm: Introduce translate-a64.h |
|
Date: |
Sat, 17 Feb 2018 10:22:18 -0800 |
Move some stuff that will be common to both translate-a64.c
and translate-sve.c.
Signed-off-by: Richard Henderson <address@hidden>
---
target/arm/translate-a64.h | 110 +++++++++++++++++++++++++++++++++++++++++++++
target/arm/translate-a64.c | 101 ++++++-----------------------------------
2 files changed, 123 insertions(+), 88 deletions(-)
create mode 100644 target/arm/translate-a64.h
diff --git a/target/arm/translate-a64.h b/target/arm/translate-a64.h
new file mode 100644
index 0000000000..e519aee314
--- /dev/null
+++ b/target/arm/translate-a64.h
@@ -0,0 +1,110 @@
+/*
+ * 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);
+
+#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 - 4); \
+ 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(bool);
+bool logic_imm_decode_wmask(uint64_t *result, unsigned int immn,
+ unsigned int imms, unsigned int immr);
+uint64_t vfp_expand_imm(int size, uint8_t imm8);
+
+/* 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, TCGMemOp size)
+{
+ int offs = 0;
+#ifdef HOST_WORDS_BIGENDIAN
+ /* This is complicated slightly because vfp.zregs[n].d[0] is
+ * still the low half and vfp.zregs[n].d[1] the high half
+ * of the 128 bit vector, even on big endian systems.
+ * Calculate the offset assuming a fully bigendian 128 bits,
+ * then XOR to account for the order of the two 64 bit halves.
+ */
+ offs += (16 - ((element + 1) * (1 << size)));
+ offs ^= 8;
+#else
+ offs += element * (1 << 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)
+{
+ TCGv_ptr ret = tcg_temp_new_ptr();
+ tcg_gen_addi_ptr(ret, 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);
+
+#endif /* TARGET_ARM_TRANSLATE_A64_H */
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 032cbfa17d..e0e7ebf68c 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -36,13 +36,13 @@
#include "exec/log.h"
#include "trace-tcg.h"
+#include "translate-a64.h"
static TCGv_i64 cpu_X[32];
static TCGv_i64 cpu_pc;
/* Load/store exclusive handling */
static TCGv_i64 cpu_exclusive_high;
-static TCGv_i64 cpu_reg(DisasContext *s, int reg);
static const char *regnames[] = {
"x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
@@ -392,22 +392,13 @@ static inline void gen_goto_tb(DisasContext *s, int n,
uint64_t dest)
}
}
-static void unallocated_encoding(DisasContext *s)
+void unallocated_encoding(DisasContext *s)
{
/* Unallocated and reserved encodings are uncategorized */
gen_exception_insn(s, 4, EXCP_UDEF, syn_uncategorized(),
default_exception_el(s));
}
-#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 - 4); \
- unallocated_encoding(s); \
- } while (0)
-
static void init_tmp_a64_array(DisasContext *s)
{
#ifdef CONFIG_DEBUG_TCG
@@ -425,13 +416,13 @@ static void free_tmp_a64(DisasContext *s)
init_tmp_a64_array(s);
}
-static TCGv_i64 new_tmp_a64(DisasContext *s)
+TCGv_i64 new_tmp_a64(DisasContext *s)
{
assert(s->tmp_a64_count < TMP_A64_MAX);
return s->tmp_a64[s->tmp_a64_count++] = tcg_temp_new_i64();
}
-static TCGv_i64 new_tmp_a64_zero(DisasContext *s)
+TCGv_i64 new_tmp_a64_zero(DisasContext *s)
{
TCGv_i64 t = new_tmp_a64(s);
tcg_gen_movi_i64(t, 0);
@@ -453,7 +444,7 @@ static TCGv_i64 new_tmp_a64_zero(DisasContext *s)
* to cpu_X[31] and ZR accesses to a temporary which can be discarded.
* This is the point of the _sp forms.
*/
-static TCGv_i64 cpu_reg(DisasContext *s, int reg)
+TCGv_i64 cpu_reg(DisasContext *s, int reg)
{
if (reg == 31) {
return new_tmp_a64_zero(s);
@@ -463,7 +454,7 @@ static TCGv_i64 cpu_reg(DisasContext *s, int reg)
}
/* register access for when 31 == SP */
-static TCGv_i64 cpu_reg_sp(DisasContext *s, int reg)
+TCGv_i64 cpu_reg_sp(DisasContext *s, int reg)
{
return cpu_X[reg];
}
@@ -472,7 +463,7 @@ static TCGv_i64 cpu_reg_sp(DisasContext *s, int reg)
* representing the register contents. This TCGv is an auto-freed
* temporary so it need not be explicitly freed, and may be modified.
*/
-static TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int sf)
+TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int sf)
{
TCGv_i64 v = new_tmp_a64(s);
if (reg != 31) {
@@ -487,7 +478,7 @@ static TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int
sf)
return v;
}
-static TCGv_i64 read_cpu_reg_sp(DisasContext *s, int reg, int sf)
+TCGv_i64 read_cpu_reg_sp(DisasContext *s, int reg, int sf)
{
TCGv_i64 v = new_tmp_a64(s);
if (sf) {
@@ -498,72 +489,6 @@ static TCGv_i64 read_cpu_reg_sp(DisasContext *s, int reg,
int sf)
return v;
}
-/* 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, TCGMemOp size)
-{
- int offs = 0;
-#ifdef HOST_WORDS_BIGENDIAN
- /* This is complicated slightly because vfp.zregs[n].d[0] is
- * still the low half and vfp.zregs[n].d[1] the high half
- * of the 128 bit vector, even on big endian systems.
- * Calculate the offset assuming a fully bigendian 128 bits,
- * then XOR to account for the order of the two 64 bit halves.
- */
- offs += (16 - ((element + 1) * (1 << size)));
- offs ^= 8;
-#else
- offs += element * (1 << 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 TCGv_ptr vec_full_reg_ptr(DisasContext *s, int regno)
-{
- TCGv_ptr ret = tcg_temp_new_ptr();
- tcg_gen_addi_ptr(ret, 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)
-{
- /* FIXME SVE: We should put the composite ZCR_EL* value into tb->flags.
- In the meantime this is just the AdvSIMD length of 128. */
- return 128 / 8;
-}
-
/* Return the offset into CPUARMState of a slice (from
* the least significant end) of FP register Qn (ie
* Dn, Sn, Hn or Bn).
@@ -620,7 +545,7 @@ static void clear_vec_high(DisasContext *s, bool is_q, int
rd)
}
}
-static void write_fp_dreg(DisasContext *s, int reg, TCGv_i64 v)
+void write_fp_dreg(DisasContext *s, int reg, TCGv_i64 v)
{
unsigned ofs = fp_reg_offset(s, reg, MO_64);
@@ -637,7 +562,7 @@ static void write_fp_sreg(DisasContext *s, int reg,
TCGv_i32 v)
tcg_temp_free_i64(tmp);
}
-static TCGv_ptr get_fpstatus_ptr(bool is_f16)
+TCGv_ptr get_fpstatus_ptr(bool is_f16)
{
TCGv_ptr statusptr = tcg_temp_new_ptr();
int offset;
@@ -3130,8 +3055,8 @@ static inline uint64_t bitmask64(unsigned int length)
* value (ie should cause a guest UNDEF exception), and true if they are
* valid, in which case the decoded bit pattern is written to result.
*/
-static bool logic_imm_decode_wmask(uint64_t *result, unsigned int immn,
- unsigned int imms, unsigned int immr)
+bool logic_imm_decode_wmask(uint64_t *result, unsigned int immn,
+ unsigned int imms, unsigned int immr)
{
uint64_t mask;
unsigned e, levels, s, r;
@@ -5164,7 +5089,7 @@ static void disas_fp_3src(DisasContext *s, uint32_t insn)
* the range 01....1xx to 10....0xx, and the most significant 4 bits of
* the mantissa; see VFPExpandImm() in the v8 ARM ARM.
*/
-static uint64_t vfp_expand_imm(int size, uint8_t imm8)
+uint64_t vfp_expand_imm(int size, uint8_t imm8)
{
uint64_t imm;
--
2.14.3