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authorPeter Maydell <peter.maydell@linaro.org>2019-06-13 15:16:39 +0100
committerPeter Maydell <peter.maydell@linaro.org>2019-06-13 15:16:39 +0100
commit650a379d505bf558bcb41124bc6c951a76cbc113 (patch)
tree3454955dea2cf8f5cd379d906b6f82a0126e04b0 /target
parent785a602eae7ad97076b9794ebaba072ad4a9f74f (diff)
parent18cf951af9a27ae573a6fa17f9d0c103f7b7679b (diff)
downloadqemu-650a379d505bf558bcb41124bc6c951a76cbc113.zip
qemu-650a379d505bf558bcb41124bc6c951a76cbc113.tar.gz
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20190613-1' into staging
target-arm queue: * convert aarch32 VFP decoder to decodetree (includes tightening up decode in a few places) * fix minor bugs in VFP short-vector handling * hw/core/bus.c: Only the main system bus can have no parent * smmuv3: Fix decoding of ID register range * Implement NSACR gating of floating point * Use tcg_gen_gvec_bitsel # gpg: Signature made Thu 13 Jun 2019 15:15:39 BST # gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE # gpg: issuer "peter.maydell@linaro.org" # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate] # Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE * remotes/pmaydell/tags/pull-target-arm-20190613-1: (47 commits) target/arm: Fix short-vector increment behaviour target/arm: Convert float-to-integer VCVT insns to decodetree target/arm: Convert VCVT fp/fixed-point conversion insns to decodetree target/arm: Convert VJCVT to decodetree target/arm: Convert integer-to-float insns to decodetree target/arm: Convert double-single precision conversion insns to decodetree target/arm: Convert VFP round insns to decodetree target/arm: Convert the VCVT-to-f16 insns to decodetree target/arm: Convert the VCVT-from-f16 insns to decodetree target/arm: Convert VFP comparison insns to decodetree target/arm: Convert VMOV (register) to decodetree target/arm: Convert VSQRT to decodetree target/arm: Convert VNEG to decodetree target/arm: Convert VABS to decodetree target/arm: Convert VMOV (imm) to decodetree target/arm: Convert VFP fused multiply-add insns to decodetree target/arm: Convert VDIV to decodetree target/arm: Convert VSUB to decodetree target/arm: Convert VADD to decodetree target/arm: Convert VNMUL to decodetree ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
-rw-r--r--target/arm/Makefile.objs13
-rw-r--r--target/arm/cpu.c6
-rw-r--r--target/arm/cpu.h11
-rw-r--r--target/arm/helper.c75
-rw-r--r--target/arm/pauth_helper.c4
-rw-r--r--target/arm/translate-a64.c15
-rw-r--r--target/arm/translate-a64.h2
-rw-r--r--target/arm/translate-vfp.inc.c2672
-rw-r--r--target/arm/translate.c1581
-rw-r--r--target/arm/translate.h3
-rw-r--r--target/arm/vfp-uncond.decode63
-rw-r--r--target/arm/vfp.decode242
12 files changed, 3130 insertions, 1557 deletions
diff --git a/target/arm/Makefile.objs b/target/arm/Makefile.objs
index 6bdcc65..dfa736a 100644
--- a/target/arm/Makefile.objs
+++ b/target/arm/Makefile.objs
@@ -19,5 +19,18 @@ target/arm/decode-sve.inc.c: $(SRC_PATH)/target/arm/sve.decode $(DECODETREE)
$(PYTHON) $(DECODETREE) --decode disas_sve -o $@ $<,\
"GEN", $(TARGET_DIR)$@)
+target/arm/decode-vfp.inc.c: $(SRC_PATH)/target/arm/vfp.decode $(DECODETREE)
+ $(call quiet-command,\
+ $(PYTHON) $(DECODETREE) --static-decode disas_vfp -o $@ $<,\
+ "GEN", $(TARGET_DIR)$@)
+
+target/arm/decode-vfp-uncond.inc.c: $(SRC_PATH)/target/arm/vfp-uncond.decode $(DECODETREE)
+ $(call quiet-command,\
+ $(PYTHON) $(DECODETREE) --static-decode disas_vfp_uncond -o $@ $<,\
+ "GEN", $(TARGET_DIR)$@)
+
target/arm/translate-sve.o: target/arm/decode-sve.inc.c
+target/arm/translate.o: target/arm/decode-vfp.inc.c
+target/arm/translate.o: target/arm/decode-vfp-uncond.inc.c
+
obj-$(TARGET_AARCH64) += translate-sve.o sve_helper.o
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 4d5d46d..2335659 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1609,6 +1609,8 @@ static void cortex_r5f_initfn(Object *obj)
cortex_r5_initfn(obj);
set_feature(&cpu->env, ARM_FEATURE_VFP3);
+ cpu->isar.mvfr0 = 0x10110221;
+ cpu->isar.mvfr1 = 0x00000011;
}
static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
@@ -2021,6 +2023,10 @@ static void arm_max_initfn(Object *obj)
kvm_arm_set_cpu_features_from_host(cpu);
} else {
cortex_a15_initfn(obj);
+
+ /* old-style VFP short-vector support */
+ cpu->isar.mvfr0 = FIELD_DP32(cpu->isar.mvfr0, MVFR0, FPSHVEC, 1);
+
#ifdef CONFIG_USER_ONLY
/* We don't set these in system emulation mode for the moment,
* since we don't correctly set (all of) the ID registers to
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 06ddc49..9229862 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -3371,6 +3371,17 @@ static inline bool isar_feature_aa32_fp16_arith(const ARMISARegisters *id)
return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, FP) == 1;
}
+static inline bool isar_feature_aa32_fp_d32(const ARMISARegisters *id)
+{
+ /* Return true if D16-D31 are implemented */
+ return FIELD_EX64(id->mvfr0, MVFR0, SIMDREG) >= 2;
+}
+
+static inline bool isar_feature_aa32_fpshvec(const ARMISARegisters *id)
+{
+ return FIELD_EX64(id->mvfr0, MVFR0, FPSHVEC) > 0;
+}
+
/*
* We always set the FP and SIMD FP16 fields to indicate identical
* levels of support (assuming SIMD is implemented at all), so
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 188fb19..df4276f 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -930,9 +930,36 @@ static void cpacr_write(CPUARMState *env, const ARMCPRegInfo *ri,
}
value &= mask;
}
+
+ /*
+ * For A-profile AArch32 EL3 (but not M-profile secure mode), if NSACR.CP10
+ * is 0 then CPACR.{CP11,CP10} ignore writes and read as 0b00.
+ */
+ if (arm_feature(env, ARM_FEATURE_EL3) && !arm_el_is_aa64(env, 3) &&
+ !arm_is_secure(env) && !extract32(env->cp15.nsacr, 10, 1)) {
+ value &= ~(0xf << 20);
+ value |= env->cp15.cpacr_el1 & (0xf << 20);
+ }
+
env->cp15.cpacr_el1 = value;
}
+static uint64_t cpacr_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ /*
+ * For A-profile AArch32 EL3 (but not M-profile secure mode), if NSACR.CP10
+ * is 0 then CPACR.{CP11,CP10} ignore writes and read as 0b00.
+ */
+ uint64_t value = env->cp15.cpacr_el1;
+
+ if (arm_feature(env, ARM_FEATURE_EL3) && !arm_el_is_aa64(env, 3) &&
+ !arm_is_secure(env) && !extract32(env->cp15.nsacr, 10, 1)) {
+ value &= ~(0xf << 20);
+ }
+ return value;
+}
+
+
static void cpacr_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
/* Call cpacr_write() so that we reset with the correct RAO bits set
@@ -998,7 +1025,7 @@ static const ARMCPRegInfo v6_cp_reginfo[] = {
{ .name = "CPACR", .state = ARM_CP_STATE_BOTH, .opc0 = 3,
.crn = 1, .crm = 0, .opc1 = 0, .opc2 = 2, .accessfn = cpacr_access,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.cpacr_el1),
- .resetfn = cpacr_reset, .writefn = cpacr_write },
+ .resetfn = cpacr_reset, .writefn = cpacr_write, .readfn = cpacr_read },
REGINFO_SENTINEL
};
@@ -4683,6 +4710,36 @@ uint64_t arm_hcr_el2_eff(CPUARMState *env)
return ret;
}
+static void cptr_el2_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ /*
+ * For A-profile AArch32 EL3, if NSACR.CP10
+ * is 0 then HCPTR.{TCP11,TCP10} ignore writes and read as 1.
+ */
+ if (arm_feature(env, ARM_FEATURE_EL3) && !arm_el_is_aa64(env, 3) &&
+ !arm_is_secure(env) && !extract32(env->cp15.nsacr, 10, 1)) {
+ value &= ~(0x3 << 10);
+ value |= env->cp15.cptr_el[2] & (0x3 << 10);
+ }
+ env->cp15.cptr_el[2] = value;
+}
+
+static uint64_t cptr_el2_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ /*
+ * For A-profile AArch32 EL3, if NSACR.CP10
+ * is 0 then HCPTR.{TCP11,TCP10} ignore writes and read as 1.
+ */
+ uint64_t value = env->cp15.cptr_el[2];
+
+ if (arm_feature(env, ARM_FEATURE_EL3) && !arm_el_is_aa64(env, 3) &&
+ !arm_is_secure(env) && !extract32(env->cp15.nsacr, 10, 1)) {
+ value |= 0x3 << 10;
+ }
+ return value;
+}
+
static const ARMCPRegInfo el2_cp_reginfo[] = {
{ .name = "HCR_EL2", .state = ARM_CP_STATE_AA64,
.type = ARM_CP_IO,
@@ -4730,7 +4787,8 @@ static const ARMCPRegInfo el2_cp_reginfo[] = {
{ .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2,
.access = PL2_RW, .accessfn = cptr_access, .resetvalue = 0,
- .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[2]) },
+ .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[2]),
+ .readfn = cptr_el2_read, .writefn = cptr_el2_write },
{ .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0,
.access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[2]),
@@ -13587,6 +13645,19 @@ int fp_exception_el(CPUARMState *env, int cur_el)
break;
}
+ /*
+ * The NSACR allows A-profile AArch32 EL3 and M-profile secure mode
+ * to control non-secure access to the FPU. It doesn't have any
+ * effect if EL3 is AArch64 or if EL3 doesn't exist at all.
+ */
+ if ((arm_feature(env, ARM_FEATURE_EL3) && !arm_el_is_aa64(env, 3) &&
+ cur_el <= 2 && !arm_is_secure_below_el3(env))) {
+ if (!extract32(env->cp15.nsacr, 10, 1)) {
+ /* FP insns act as UNDEF */
+ return cur_el == 2 ? 2 : 1;
+ }
+ }
+
/* For the CPTR registers we don't need to guard with an ARM_FEATURE
* check because zero bits in the registers mean "don't trap".
*/
diff --git a/target/arm/pauth_helper.c b/target/arm/pauth_helper.c
index 7f30ae7..d3194f2 100644
--- a/target/arm/pauth_helper.c
+++ b/target/arm/pauth_helper.c
@@ -344,9 +344,9 @@ static uint64_t pauth_auth(CPUARMState *env, uint64_t ptr, uint64_t modifier,
if (unlikely(extract64(test, bot_bit, top_bit - bot_bit))) {
int error_code = (keynumber << 1) | (keynumber ^ 1);
if (param.tbi) {
- return deposit64(ptr, 53, 2, error_code);
+ return deposit64(orig_ptr, 53, 2, error_code);
} else {
- return deposit64(ptr, 61, 2, error_code);
+ return deposit64(orig_ptr, 61, 2, error_code);
}
}
return orig_ptr;
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 8a3bf20..ae739f6 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -704,6 +704,15 @@ static void gen_gvec_fn3(DisasContext *s, bool is_q, int rd, int rn, int rm,
vec_full_reg_offset(s, rm), is_q ? 16 : 8, vec_full_reg_size(s));
}
+/* Expand a 4-operand AdvSIMD vector operation using an expander function. */
+static void gen_gvec_fn4(DisasContext *s, bool is_q, int rd, int rn, int rm,
+ int rx, GVecGen4Fn *gvec_fn, int vece)
+{
+ gvec_fn(vece, vec_full_reg_offset(s, rd), vec_full_reg_offset(s, rn),
+ vec_full_reg_offset(s, rm), vec_full_reg_offset(s, rx),
+ is_q ? 16 : 8, vec_full_reg_size(s));
+}
+
/* Expand a 2-operand + immediate AdvSIMD vector operation using
* an op descriptor.
*/
@@ -10918,13 +10927,13 @@ static void disas_simd_3same_logic(DisasContext *s, uint32_t insn)
return;
case 5: /* BSL bitwise select */
- gen_gvec_op3(s, is_q, rd, rn, rm, &bsl_op);
+ gen_gvec_fn4(s, is_q, rd, rd, rn, rm, tcg_gen_gvec_bitsel, 0);
return;
case 6: /* BIT, bitwise insert if true */
- gen_gvec_op3(s, is_q, rd, rn, rm, &bit_op);
+ gen_gvec_fn4(s, is_q, rd, rm, rn, rd, tcg_gen_gvec_bitsel, 0);
return;
case 7: /* BIF, bitwise insert if false */
- gen_gvec_op3(s, is_q, rd, rn, rm, &bif_op);
+ gen_gvec_fn4(s, is_q, rd, rm, rd, rn, tcg_gen_gvec_bitsel, 0);
return;
default:
diff --git a/target/arm/translate-a64.h b/target/arm/translate-a64.h
index 63d958c..9569bc5 100644
--- a/target/arm/translate-a64.h
+++ b/target/arm/translate-a64.h
@@ -122,5 +122,7 @@ typedef void GVecGen2iFn(unsigned, uint32_t, uint32_t, int64_t,
uint32_t, uint32_t);
typedef void GVecGen3Fn(unsigned, uint32_t, uint32_t,
uint32_t, uint32_t, uint32_t);
+typedef void GVecGen4Fn(unsigned, uint32_t, uint32_t, uint32_t,
+ uint32_t, uint32_t, uint32_t);
#endif /* TARGET_ARM_TRANSLATE_A64_H */
diff --git a/target/arm/translate-vfp.inc.c b/target/arm/translate-vfp.inc.c
new file mode 100644
index 0000000..709fc65
--- /dev/null
+++ b/target/arm/translate-vfp.inc.c
@@ -0,0 +1,2672 @@
+/*
+ * ARM translation: AArch32 VFP instructions
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2005-2007 CodeSourcery
+ * Copyright (c) 2007 OpenedHand, Ltd.
+ * Copyright (c) 2019 Linaro, Ltd.
+ *
+ * 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/>.
+ */
+
+/*
+ * This file is intended to be included from translate.c; it uses
+ * some macros and definitions provided by that file.
+ * It might be possible to convert it to a standalone .c file eventually.
+ */
+
+/* Include the generated VFP decoder */
+#include "decode-vfp.inc.c"
+#include "decode-vfp-uncond.inc.c"
+
+/*
+ * Return the offset of a 16-bit half of the specified VFP single-precision
+ * register. If top is true, returns the top 16 bits; otherwise the bottom
+ * 16 bits.
+ */
+static inline long vfp_f16_offset(unsigned reg, bool top)
+{
+ long offs = vfp_reg_offset(false, reg);
+#ifdef HOST_WORDS_BIGENDIAN
+ if (!top) {
+ offs += 2;
+ }
+#else
+ if (top) {
+ offs += 2;
+ }
+#endif
+ return offs;
+}
+
+/*
+ * Check that VFP access is enabled. If it is, do the necessary
+ * M-profile lazy-FP handling and then return true.
+ * If not, emit code to generate an appropriate exception and
+ * return false.
+ * The ignore_vfp_enabled argument specifies that we should ignore
+ * whether VFP is enabled via FPEXC[EN]: this should be true for FMXR/FMRX
+ * accesses to FPSID, FPEXC, MVFR0, MVFR1, MVFR2, and false for all other insns.
+ */
+static bool full_vfp_access_check(DisasContext *s, bool ignore_vfp_enabled)
+{
+ if (s->fp_excp_el) {
+ if (arm_dc_feature(s, ARM_FEATURE_M)) {
+ gen_exception_insn(s, 4, EXCP_NOCP, syn_uncategorized(),
+ s->fp_excp_el);
+ } else {
+ gen_exception_insn(s, 4, EXCP_UDEF,
+ syn_fp_access_trap(1, 0xe, false),
+ s->fp_excp_el);
+ }
+ return false;
+ }
+
+ if (!s->vfp_enabled && !ignore_vfp_enabled) {
+ assert(!arm_dc_feature(s, ARM_FEATURE_M));
+ gen_exception_insn(s, 4, EXCP_UDEF, syn_uncategorized(),
+ default_exception_el(s));
+ return false;
+ }
+
+ if (arm_dc_feature(s, ARM_FEATURE_M)) {
+ /* Handle M-profile lazy FP state mechanics */
+
+ /* Trigger lazy-state preservation if necessary */
+ if (s->v7m_lspact) {
+ /*
+ * Lazy state saving affects external memory and also the NVIC,
+ * so we must mark it as an IO operation for icount.
+ */
+ if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
+ gen_io_start();
+ }
+ gen_helper_v7m_preserve_fp_state(cpu_env);
+ if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
+ gen_io_end();
+ }
+ /*
+ * If the preserve_fp_state helper doesn't throw an exception
+ * then it will clear LSPACT; we don't need to repeat this for
+ * any further FP insns in this TB.
+ */
+ s->v7m_lspact = false;
+ }
+
+ /* Update ownership of FP context: set FPCCR.S to match current state */
+ if (s->v8m_fpccr_s_wrong) {
+ TCGv_i32 tmp;
+
+ tmp = load_cpu_field(v7m.fpccr[M_REG_S]);
+ if (s->v8m_secure) {
+ tcg_gen_ori_i32(tmp, tmp, R_V7M_FPCCR_S_MASK);
+ } else {
+ tcg_gen_andi_i32(tmp, tmp, ~R_V7M_FPCCR_S_MASK);
+ }
+ store_cpu_field(tmp, v7m.fpccr[M_REG_S]);
+ /* Don't need to do this for any further FP insns in this TB */
+ s->v8m_fpccr_s_wrong = false;
+ }
+
+ if (s->v7m_new_fp_ctxt_needed) {
+ /*
+ * Create new FP context by updating CONTROL.FPCA, CONTROL.SFPA
+ * and the FPSCR.
+ */
+ TCGv_i32 control, fpscr;
+ uint32_t bits = R_V7M_CONTROL_FPCA_MASK;
+
+ fpscr = load_cpu_field(v7m.fpdscr[s->v8m_secure]);
+ gen_helper_vfp_set_fpscr(cpu_env, fpscr);
+ tcg_temp_free_i32(fpscr);
+ /*
+ * We don't need to arrange to end the TB, because the only
+ * parts of FPSCR which we cache in the TB flags are the VECLEN
+ * and VECSTRIDE, and those don't exist for M-profile.
+ */
+
+ if (s->v8m_secure) {
+ bits |= R_V7M_CONTROL_SFPA_MASK;
+ }
+ control = load_cpu_field(v7m.control[M_REG_S]);
+ tcg_gen_ori_i32(control, control, bits);
+ store_cpu_field(control, v7m.control[M_REG_S]);
+ /* Don't need to do this for any further FP insns in this TB */
+ s->v7m_new_fp_ctxt_needed = false;
+ }
+ }
+
+ return true;
+}
+
+/*
+ * The most usual kind of VFP access check, for everything except
+ * FMXR/FMRX to the always-available special registers.
+ */
+static bool vfp_access_check(DisasContext *s)
+{
+ return full_vfp_access_check(s, false);
+}
+
+static bool trans_VSEL(DisasContext *s, arg_VSEL *a)
+{
+ uint32_t rd, rn, rm;
+ bool dp = a->dp;
+
+ if (!dc_isar_feature(aa32_vsel, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (dp && !dc_isar_feature(aa32_fp_d32, s) &&
+ ((a->vm | a->vn | a->vd) & 0x10)) {
+ return false;
+ }
+ rd = a->vd;
+ rn = a->vn;
+ rm = a->vm;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (dp) {
+ TCGv_i64 frn, frm, dest;
+ TCGv_i64 tmp, zero, zf, nf, vf;
+
+ zero = tcg_const_i64(0);
+
+ frn = tcg_temp_new_i64();
+ frm = tcg_temp_new_i64();
+ dest = tcg_temp_new_i64();
+
+ zf = tcg_temp_new_i64();
+ nf = tcg_temp_new_i64();
+ vf = tcg_temp_new_i64();
+
+ tcg_gen_extu_i32_i64(zf, cpu_ZF);
+ tcg_gen_ext_i32_i64(nf, cpu_NF);
+ tcg_gen_ext_i32_i64(vf, cpu_VF);
+
+ neon_load_reg64(frn, rn);
+ neon_load_reg64(frm, rm);
+ switch (a->cc) {
+ case 0: /* eq: Z */
+ tcg_gen_movcond_i64(TCG_COND_EQ, dest, zf, zero,
+ frn, frm);
+ break;
+ case 1: /* vs: V */
+ tcg_gen_movcond_i64(TCG_COND_LT, dest, vf, zero,
+ frn, frm);
+ break;
+ case 2: /* ge: N == V -> N ^ V == 0 */
+ tmp = tcg_temp_new_i64();
+ tcg_gen_xor_i64(tmp, vf, nf);
+ tcg_gen_movcond_i64(TCG_COND_GE, dest, tmp, zero,
+ frn, frm);
+ tcg_temp_free_i64(tmp);
+ break;
+ case 3: /* gt: !Z && N == V */
+ tcg_gen_movcond_i64(TCG_COND_NE, dest, zf, zero,
+ frn, frm);
+ tmp = tcg_temp_new_i64();
+ tcg_gen_xor_i64(tmp, vf, nf);
+ tcg_gen_movcond_i64(TCG_COND_GE, dest, tmp, zero,
+ dest, frm);
+ tcg_temp_free_i64(tmp);
+ break;
+ }
+ neon_store_reg64(dest, rd);
+ tcg_temp_free_i64(frn);
+ tcg_temp_free_i64(frm);
+ tcg_temp_free_i64(dest);
+
+ tcg_temp_free_i64(zf);
+ tcg_temp_free_i64(nf);
+ tcg_temp_free_i64(vf);
+
+ tcg_temp_free_i64(zero);
+ } else {
+ TCGv_i32 frn, frm, dest;
+ TCGv_i32 tmp, zero;
+
+ zero = tcg_const_i32(0);
+
+ frn = tcg_temp_new_i32();
+ frm = tcg_temp_new_i32();
+ dest = tcg_temp_new_i32();
+ neon_load_reg32(frn, rn);
+ neon_load_reg32(frm, rm);
+ switch (a->cc) {
+ case 0: /* eq: Z */
+ tcg_gen_movcond_i32(TCG_COND_EQ, dest, cpu_ZF, zero,
+ frn, frm);
+ break;
+ case 1: /* vs: V */
+ tcg_gen_movcond_i32(TCG_COND_LT, dest, cpu_VF, zero,
+ frn, frm);
+ break;
+ case 2: /* ge: N == V -> N ^ V == 0 */
+ tmp = tcg_temp_new_i32();
+ tcg_gen_xor_i32(tmp, cpu_VF, cpu_NF);
+ tcg_gen_movcond_i32(TCG_COND_GE, dest, tmp, zero,
+ frn, frm);
+ tcg_temp_free_i32(tmp);
+ break;
+ case 3: /* gt: !Z && N == V */
+ tcg_gen_movcond_i32(TCG_COND_NE, dest, cpu_ZF, zero,
+ frn, frm);
+ tmp = tcg_temp_new_i32();
+ tcg_gen_xor_i32(tmp, cpu_VF, cpu_NF);
+ tcg_gen_movcond_i32(TCG_COND_GE, dest, tmp, zero,
+ dest, frm);
+ tcg_temp_free_i32(tmp);
+ break;
+ }
+ neon_store_reg32(dest, rd);
+ tcg_temp_free_i32(frn);
+ tcg_temp_free_i32(frm);
+ tcg_temp_free_i32(dest);
+
+ tcg_temp_free_i32(zero);
+ }
+
+ return true;
+}
+
+static bool trans_VMINMAXNM(DisasContext *s, arg_VMINMAXNM *a)
+{
+ uint32_t rd, rn, rm;
+ bool dp = a->dp;
+ bool vmin = a->op;
+ TCGv_ptr fpst;
+
+ if (!dc_isar_feature(aa32_vminmaxnm, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (dp && !dc_isar_feature(aa32_fp_d32, s) &&
+ ((a->vm | a->vn | a->vd) & 0x10)) {
+ return false;
+ }
+ rd = a->vd;
+ rn = a->vn;
+ rm = a->vm;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(0);
+
+ if (dp) {
+ TCGv_i64 frn, frm, dest;
+
+ frn = tcg_temp_new_i64();
+ frm = tcg_temp_new_i64();
+ dest = tcg_temp_new_i64();
+
+ neon_load_reg64(frn, rn);
+ neon_load_reg64(frm, rm);
+ if (vmin) {
+ gen_helper_vfp_minnumd(dest, frn, frm, fpst);
+ } else {
+ gen_helper_vfp_maxnumd(dest, frn, frm, fpst);
+ }
+ neon_store_reg64(dest, rd);
+ tcg_temp_free_i64(frn);
+ tcg_temp_free_i64(frm);
+ tcg_temp_free_i64(dest);
+ } else {
+ TCGv_i32 frn, frm, dest;
+
+ frn = tcg_temp_new_i32();
+ frm = tcg_temp_new_i32();
+ dest = tcg_temp_new_i32();
+
+ neon_load_reg32(frn, rn);
+ neon_load_reg32(frm, rm);
+ if (vmin) {
+ gen_helper_vfp_minnums(dest, frn, frm, fpst);
+ } else {
+ gen_helper_vfp_maxnums(dest, frn, frm, fpst);
+ }
+ neon_store_reg32(dest, rd);
+ tcg_temp_free_i32(frn);
+ tcg_temp_free_i32(frm);
+ tcg_temp_free_i32(dest);
+ }
+
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+/*
+ * Table for converting the most common AArch32 encoding of
+ * rounding mode to arm_fprounding order (which matches the
+ * common AArch64 order); see ARM ARM pseudocode FPDecodeRM().
+ */
+static const uint8_t fp_decode_rm[] = {
+ FPROUNDING_TIEAWAY,
+ FPROUNDING_TIEEVEN,
+ FPROUNDING_POSINF,
+ FPROUNDING_NEGINF,
+};
+
+static bool trans_VRINT(DisasContext *s, arg_VRINT *a)
+{
+ uint32_t rd, rm;
+ bool dp = a->dp;
+ TCGv_ptr fpst;
+ TCGv_i32 tcg_rmode;
+ int rounding = fp_decode_rm[a->rm];
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (dp && !dc_isar_feature(aa32_fp_d32, s) &&
+ ((a->vm | a->vd) & 0x10)) {
+ return false;
+ }
+ rd = a->vd;
+ rm = a->vm;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(0);
+
+ tcg_rmode = tcg_const_i32(arm_rmode_to_sf(rounding));
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+
+ if (dp) {
+ TCGv_i64 tcg_op;
+ TCGv_i64 tcg_res;
+ tcg_op = tcg_temp_new_i64();
+ tcg_res = tcg_temp_new_i64();
+ neon_load_reg64(tcg_op, rm);
+ gen_helper_rintd(tcg_res, tcg_op, fpst);
+ neon_store_reg64(tcg_res, rd);
+ tcg_temp_free_i64(tcg_op);
+ tcg_temp_free_i64(tcg_res);
+ } else {
+ TCGv_i32 tcg_op;
+ TCGv_i32 tcg_res;
+ tcg_op = tcg_temp_new_i32();
+ tcg_res = tcg_temp_new_i32();
+ neon_load_reg32(tcg_op, rm);
+ gen_helper_rints(tcg_res, tcg_op, fpst);
+ neon_store_reg32(tcg_res, rd);
+ tcg_temp_free_i32(tcg_op);
+ tcg_temp_free_i32(tcg_res);
+ }
+
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ tcg_temp_free_i32(tcg_rmode);
+
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+static bool trans_VCVT(DisasContext *s, arg_VCVT *a)
+{
+ uint32_t rd, rm;
+ bool dp = a->dp;
+ TCGv_ptr fpst;
+ TCGv_i32 tcg_rmode, tcg_shift;
+ int rounding = fp_decode_rm[a->rm];
+ bool is_signed = a->op;
+
+ if (!dc_isar_feature(aa32_vcvt_dr, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (dp && !dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+ return false;
+ }
+ rd = a->vd;
+ rm = a->vm;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(0);
+
+ tcg_shift = tcg_const_i32(0);
+
+ tcg_rmode = tcg_const_i32(arm_rmode_to_sf(rounding));
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+
+ if (dp) {
+ TCGv_i64 tcg_double, tcg_res;
+ TCGv_i32 tcg_tmp;
+ tcg_double = tcg_temp_new_i64();
+ tcg_res = tcg_temp_new_i64();
+ tcg_tmp = tcg_temp_new_i32();
+ neon_load_reg64(tcg_double, rm);
+ if (is_signed) {
+ gen_helper_vfp_tosld(tcg_res, tcg_double, tcg_shift, fpst);
+ } else {
+ gen_helper_vfp_tould(tcg_res, tcg_double, tcg_shift, fpst);
+ }
+ tcg_gen_extrl_i64_i32(tcg_tmp, tcg_res);
+ neon_store_reg32(tcg_tmp, rd);
+ tcg_temp_free_i32(tcg_tmp);
+ tcg_temp_free_i64(tcg_res);
+ tcg_temp_free_i64(tcg_double);
+ } else {
+ TCGv_i32 tcg_single, tcg_res;
+ tcg_single = tcg_temp_new_i32();
+ tcg_res = tcg_temp_new_i32();
+ neon_load_reg32(tcg_single, rm);
+ if (is_signed) {
+ gen_helper_vfp_tosls(tcg_res, tcg_single, tcg_shift, fpst);
+ } else {
+ gen_helper_vfp_touls(tcg_res, tcg_single, tcg_shift, fpst);
+ }
+ neon_store_reg32(tcg_res, rd);
+ tcg_temp_free_i32(tcg_res);
+ tcg_temp_free_i32(tcg_single);
+ }
+
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ tcg_temp_free_i32(tcg_rmode);
+
+ tcg_temp_free_i32(tcg_shift);
+
+ tcg_temp_free_ptr(fpst);
+
+ return true;
+}
+
+static bool trans_VMOV_to_gp(DisasContext *s, arg_VMOV_to_gp *a)
+{
+ /* VMOV scalar to general purpose register */
+ TCGv_i32 tmp;
+ int pass;
+ uint32_t offset;
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vn & 0x10)) {
+ return false;
+ }
+
+ offset = a->index << a->size;
+ pass = extract32(offset, 2, 1);
+ offset = extract32(offset, 0, 2) * 8;
+
+ if (a->size != 2 && !arm_dc_feature(s, ARM_FEATURE_NEON)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = neon_load_reg(a->vn, pass);
+ switch (a->size) {
+ case 0:
+ if (offset) {
+ tcg_gen_shri_i32(tmp, tmp, offset);
+ }
+ if (a->u) {
+ gen_uxtb(tmp);
+ } else {
+ gen_sxtb(tmp);
+ }
+ break;
+ case 1:
+ if (a->u) {
+ if (offset) {
+ tcg_gen_shri_i32(tmp, tmp, 16);
+ } else {
+ gen_uxth(tmp);
+ }
+ } else {
+ if (offset) {
+ tcg_gen_sari_i32(tmp, tmp, 16);
+ } else {
+ gen_sxth(tmp);
+ }
+ }
+ break;
+ case 2:
+ break;
+ }
+ store_reg(s, a->rt, tmp);
+
+ return true;
+}
+
+static bool trans_VMOV_from_gp(DisasContext *s, arg_VMOV_from_gp *a)
+{
+ /* VMOV general purpose register to scalar */
+ TCGv_i32 tmp, tmp2;
+ int pass;
+ uint32_t offset;
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vn & 0x10)) {
+ return false;
+ }
+
+ offset = a->index << a->size;
+ pass = extract32(offset, 2, 1);
+ offset = extract32(offset, 0, 2) * 8;
+
+ if (a->size != 2 && !arm_dc_feature(s, ARM_FEATURE_NEON)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = load_reg(s, a->rt);
+ switch (a->size) {
+ case 0:
+ tmp2 = neon_load_reg(a->vn, pass);
+ tcg_gen_deposit_i32(tmp, tmp2, tmp, offset, 8);
+ tcg_temp_free_i32(tmp2);
+ break;
+ case 1:
+ tmp2 = neon_load_reg(a->vn, pass);
+ tcg_gen_deposit_i32(tmp, tmp2, tmp, offset, 16);
+ tcg_temp_free_i32(tmp2);
+ break;
+ case 2:
+ break;
+ }
+ neon_store_reg(a->vn, pass, tmp);
+
+ return true;
+}
+
+static bool trans_VDUP(DisasContext *s, arg_VDUP *a)
+{
+ /* VDUP (general purpose register) */
+ TCGv_i32 tmp;
+ int size, vec_size;
+
+ if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vn & 0x10)) {
+ return false;
+ }
+
+ if (a->b && a->e) {
+ return false;
+ }
+
+ if (a->q && (a->vn & 1)) {
+ return false;
+ }
+
+ vec_size = a->q ? 16 : 8;
+ if (a->b) {
+ size = 0;
+ } else if (a->e) {
+ size = 1;
+ } else {
+ size = 2;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = load_reg(s, a->rt);
+ tcg_gen_gvec_dup_i32(size, neon_reg_offset(a->vn, 0),
+ vec_size, vec_size, tmp);
+ tcg_temp_free_i32(tmp);
+
+ return true;
+}
+
+static bool trans_VMSR_VMRS(DisasContext *s, arg_VMSR_VMRS *a)
+{
+ TCGv_i32 tmp;
+ bool ignore_vfp_enabled = false;
+
+ if (arm_dc_feature(s, ARM_FEATURE_M)) {
+ /*
+ * The only M-profile VFP vmrs/vmsr sysreg is FPSCR.
+ * Writes to R15 are UNPREDICTABLE; we choose to undef.
+ */
+ if (a->rt == 15 || a->reg != ARM_VFP_FPSCR) {
+ return false;
+ }
+ }
+
+ switch (a->reg) {
+ case ARM_VFP_FPSID:
+ /*
+ * VFPv2 allows access to FPSID from userspace; VFPv3 restricts
+ * all ID registers to privileged access only.
+ */
+ if (IS_USER(s) && arm_dc_feature(s, ARM_FEATURE_VFP3)) {
+ return false;
+ }
+ ignore_vfp_enabled = true;
+ break;
+ case ARM_VFP_MVFR0:
+ case ARM_VFP_MVFR1:
+ if (IS_USER(s) || !arm_dc_feature(s, ARM_FEATURE_MVFR)) {
+ return false;
+ }
+ ignore_vfp_enabled = true;
+ break;
+ case ARM_VFP_MVFR2:
+ if (IS_USER(s) || !arm_dc_feature(s, ARM_FEATURE_V8)) {
+ return false;
+ }
+ ignore_vfp_enabled = true;
+ break;
+ case ARM_VFP_FPSCR:
+ break;
+ case ARM_VFP_FPEXC:
+ if (IS_USER(s)) {
+ return false;
+ }
+ ignore_vfp_enabled = true;
+ break;
+ case ARM_VFP_FPINST:
+ case ARM_VFP_FPINST2:
+ /* Not present in VFPv3 */
+ if (IS_USER(s) || arm_dc_feature(s, ARM_FEATURE_VFP3)) {
+ return false;
+ }
+ break;
+ default:
+ return false;
+ }
+
+ if (!full_vfp_access_check(s, ignore_vfp_enabled)) {
+ return true;
+ }
+
+ if (a->l) {
+ /* VMRS, move VFP special register to gp register */
+ switch (a->reg) {
+ case ARM_VFP_FPSID:
+ case ARM_VFP_FPEXC:
+ case ARM_VFP_FPINST:
+ case ARM_VFP_FPINST2:
+ case ARM_VFP_MVFR0:
+ case ARM_VFP_MVFR1:
+ case ARM_VFP_MVFR2:
+ tmp = load_cpu_field(vfp.xregs[a->reg]);
+ break;
+ case ARM_VFP_FPSCR:
+ if (a->rt == 15) {
+ tmp = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]);
+ tcg_gen_andi_i32(tmp, tmp, 0xf0000000);
+ } else {
+ tmp = tcg_temp_new_i32();
+ gen_helper_vfp_get_fpscr(tmp, cpu_env);
+ }
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ if (a->rt == 15) {
+ /* Set the 4 flag bits in the CPSR. */
+ gen_set_nzcv(tmp);
+ tcg_temp_free_i32(tmp);
+ } else {
+ store_reg(s, a->rt, tmp);
+ }
+ } else {
+ /* VMSR, move gp register to VFP special register */
+ switch (a->reg) {
+ case ARM_VFP_FPSID:
+ case ARM_VFP_MVFR0:
+ case ARM_VFP_MVFR1:
+ case ARM_VFP_MVFR2:
+ /* Writes are ignored. */
+ break;
+ case ARM_VFP_FPSCR:
+ tmp = load_reg(s, a->rt);
+ gen_helper_vfp_set_fpscr(cpu_env, tmp);
+ tcg_temp_free_i32(tmp);
+ gen_lookup_tb(s);
+ break;
+ case ARM_VFP_FPEXC:
+ /*
+ * TODO: VFP subarchitecture support.
+ * For now, keep the EN bit only
+ */
+ tmp = load_reg(s, a->rt);
+ tcg_gen_andi_i32(tmp, tmp, 1 << 30);
+ store_cpu_field(tmp, vfp.xregs[a->reg]);
+ gen_lookup_tb(s);
+ break;
+ case ARM_VFP_FPINST:
+ case ARM_VFP_FPINST2:
+ tmp = load_reg(s, a->rt);
+ store_cpu_field(tmp, vfp.xregs[a->reg]);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ return true;
+}
+
+static bool trans_VMOV_single(DisasContext *s, arg_VMOV_single *a)
+{
+ TCGv_i32 tmp;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (a->l) {
+ /* VFP to general purpose register */
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vn);
+ if (a->rt == 15) {
+ /* Set the 4 flag bits in the CPSR. */
+ gen_set_nzcv(tmp);
+ tcg_temp_free_i32(tmp);
+ } else {
+ store_reg(s, a->rt, tmp);
+ }
+ } else {
+ /* general purpose register to VFP */
+ tmp = load_reg(s, a->rt);
+ neon_store_reg32(tmp, a->vn);
+ tcg_temp_free_i32(tmp);
+ }
+
+ return true;
+}
+
+static bool trans_VMOV_64_sp(DisasContext *s, arg_VMOV_64_sp *a)
+{
+ TCGv_i32 tmp;
+
+ /*
+ * VMOV between two general-purpose registers and two single precision
+ * floating point registers
+ */
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (a->op) {
+ /* fpreg to gpreg */
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm);
+ store_reg(s, a->rt, tmp);
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm + 1);
+ store_reg(s, a->rt2, tmp);
+ } else {
+ /* gpreg to fpreg */
+ tmp = load_reg(s, a->rt);
+ neon_store_reg32(tmp, a->vm);
+ tmp = load_reg(s, a->rt2);
+ neon_store_reg32(tmp, a->vm + 1);
+ }
+
+ return true;
+}
+
+static bool trans_VMOV_64_dp(DisasContext *s, arg_VMOV_64_sp *a)
+{
+ TCGv_i32 tmp;
+
+ /*
+ * VMOV between two general-purpose registers and one double precision
+ * floating point register
+ */
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (a->op) {
+ /* fpreg to gpreg */
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm * 2);
+ store_reg(s, a->rt, tmp);
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm * 2 + 1);
+ store_reg(s, a->rt2, tmp);
+ } else {
+ /* gpreg to fpreg */
+ tmp = load_reg(s, a->rt);
+ neon_store_reg32(tmp, a->vm * 2);
+ tcg_temp_free_i32(tmp);
+ tmp = load_reg(s, a->rt2);
+ neon_store_reg32(tmp, a->vm * 2 + 1);
+ tcg_temp_free_i32(tmp);
+ }
+
+ return true;
+}
+
+static bool trans_VLDR_VSTR_sp(DisasContext *s, arg_VLDR_VSTR_sp *a)
+{
+ uint32_t offset;
+ TCGv_i32 addr, tmp;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ offset = a->imm << 2;
+ if (!a->u) {
+ offset = -offset;
+ }
+
+ if (s->thumb && a->rn == 15) {
+ /* This is actually UNPREDICTABLE */
+ addr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(addr, s->pc & ~2);
+ } else {
+ addr = load_reg(s, a->rn);
+ }
+ tcg_gen_addi_i32(addr, addr, offset);
+ tmp = tcg_temp_new_i32();
+ if (a->l) {
+ gen_aa32_ld32u(s, tmp, addr, get_mem_index(s));
+ neon_store_reg32(tmp, a->vd);
+ } else {
+ neon_load_reg32(tmp, a->vd);
+ gen_aa32_st32(s, tmp, addr, get_mem_index(s));
+ }
+ tcg_temp_free_i32(tmp);
+ tcg_temp_free_i32(addr);
+
+ return true;
+}
+
+static bool trans_VLDR_VSTR_dp(DisasContext *s, arg_VLDR_VSTR_sp *a)
+{
+ uint32_t offset;
+ TCGv_i32 addr;
+ TCGv_i64 tmp;
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vd & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ offset = a->imm << 2;
+ if (!a->u) {
+ offset = -offset;
+ }
+
+ if (s->thumb && a->rn == 15) {
+ /* This is actually UNPREDICTABLE */
+ addr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(addr, s->pc & ~2);
+ } else {
+ addr = load_reg(s, a->rn);
+ }
+ tcg_gen_addi_i32(addr, addr, offset);
+ tmp = tcg_temp_new_i64();
+ if (a->l) {
+ gen_aa32_ld64(s, tmp, addr, get_mem_index(s));
+ neon_store_reg64(tmp, a->vd);
+ } else {
+ neon_load_reg64(tmp, a->vd);
+ gen_aa32_st64(s, tmp, addr, get_mem_index(s));
+ }
+ tcg_temp_free_i64(tmp);
+ tcg_temp_free_i32(addr);
+
+ return true;
+}
+
+static bool trans_VLDM_VSTM_sp(DisasContext *s, arg_VLDM_VSTM_sp *a)
+{
+ uint32_t offset;
+ TCGv_i32 addr, tmp;
+ int i, n;
+
+ n = a->imm;
+
+ if (n == 0 || (a->vd + n) > 32) {
+ /*
+ * UNPREDICTABLE cases for bad immediates: we choose to
+ * UNDEF to avoid generating huge numbers of TCG ops
+ */
+ return false;
+ }
+ if (a->rn == 15 && a->w) {
+ /* writeback to PC is UNPREDICTABLE, we choose to UNDEF */
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (s->thumb && a->rn == 15) {
+ /* This is actually UNPREDICTABLE */
+ addr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(addr, s->pc & ~2);
+ } else {
+ addr = load_reg(s, a->rn);
+ }
+ if (a->p) {
+ /* pre-decrement */
+ tcg_gen_addi_i32(addr, addr, -(a->imm << 2));
+ }
+
+ if (s->v8m_stackcheck && a->rn == 13 && a->w) {
+ /*
+ * Here 'addr' is the lowest address we will store to,
+ * and is either the old SP (if post-increment) or
+ * the new SP (if pre-decrement). For post-increment
+ * where the old value is below the limit and the new
+ * value is above, it is UNKNOWN whether the limit check
+ * triggers; we choose to trigger.
+ */
+ gen_helper_v8m_stackcheck(cpu_env, addr);
+ }
+
+ offset = 4;
+ tmp = tcg_temp_new_i32();
+ for (i = 0; i < n; i++) {
+ if (a->l) {
+ /* load */
+ gen_aa32_ld32u(s, tmp, addr, get_mem_index(s));
+ neon_store_reg32(tmp, a->vd + i);
+ } else {
+ /* store */
+ neon_load_reg32(tmp, a->vd + i);
+ gen_aa32_st32(s, tmp, addr, get_mem_index(s));
+ }
+ tcg_gen_addi_i32(addr, addr, offset);
+ }
+ tcg_temp_free_i32(tmp);
+ if (a->w) {
+ /* writeback */
+ if (a->p) {
+ offset = -offset * n;
+ tcg_gen_addi_i32(addr, addr, offset);
+ }
+ store_reg(s, a->rn, addr);
+ } else {
+ tcg_temp_free_i32(addr);
+ }
+
+ return true;
+}
+
+static bool trans_VLDM_VSTM_dp(DisasContext *s, arg_VLDM_VSTM_dp *a)
+{
+ uint32_t offset;
+ TCGv_i32 addr;
+ TCGv_i64 tmp;
+ int i, n;
+
+ n = a->imm >> 1;
+
+ if (n == 0 || (a->vd + n) > 32 || n > 16) {
+ /*
+ * UNPREDICTABLE cases for bad immediates: we choose to
+ * UNDEF to avoid generating huge numbers of TCG ops
+ */
+ return false;
+ }
+ if (a->rn == 15 && a->w) {
+ /* writeback to PC is UNPREDICTABLE, we choose to UNDEF */
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vd + n) > 16) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (s->thumb && a->rn == 15) {
+ /* This is actually UNPREDICTABLE */
+ addr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(addr, s->pc & ~2);
+ } else {
+ addr = load_reg(s, a->rn);
+ }
+ if (a->p) {
+ /* pre-decrement */
+ tcg_gen_addi_i32(addr, addr, -(a->imm << 2));
+ }
+
+ if (s->v8m_stackcheck && a->rn == 13 && a->w) {
+ /*
+ * Here 'addr' is the lowest address we will store to,
+ * and is either the old SP (if post-increment) or
+ * the new SP (if pre-decrement). For post-increment
+ * where the old value is below the limit and the new
+ * value is above, it is UNKNOWN whether the limit check
+ * triggers; we choose to trigger.
+ */
+ gen_helper_v8m_stackcheck(cpu_env, addr);
+ }
+
+ offset = 8;
+ tmp = tcg_temp_new_i64();
+ for (i = 0; i < n; i++) {
+ if (a->l) {
+ /* load */
+ gen_aa32_ld64(s, tmp, addr, get_mem_index(s));
+ neon_store_reg64(tmp, a->vd + i);
+ } else {
+ /* store */
+ neon_load_reg64(tmp, a->vd + i);
+ gen_aa32_st64(s, tmp, addr, get_mem_index(s));
+ }
+ tcg_gen_addi_i32(addr, addr, offset);
+ }
+ tcg_temp_free_i64(tmp);
+ if (a->w) {
+ /* writeback */
+ if (a->p) {
+ offset = -offset * n;
+ } else if (a->imm & 1) {
+ offset = 4;
+ } else {
+ offset = 0;
+ }
+
+ if (offset != 0) {
+ tcg_gen_addi_i32(addr, addr, offset);
+ }
+ store_reg(s, a->rn, addr);
+ } else {
+ tcg_temp_free_i32(addr);
+ }
+
+ return true;
+}
+
+/*
+ * Types for callbacks for do_vfp_3op_sp() and do_vfp_3op_dp().
+ * The callback should emit code to write a value to vd. If
+ * do_vfp_3op_{sp,dp}() was passed reads_vd then the TCGv vd
+ * will contain the old value of the relevant VFP register;
+ * otherwise it must be written to only.
+ */
+typedef void VFPGen3OpSPFn(TCGv_i32 vd,
+ TCGv_i32 vn, TCGv_i32 vm, TCGv_ptr fpst);
+typedef void VFPGen3OpDPFn(TCGv_i64 vd,
+ TCGv_i64 vn, TCGv_i64 vm, TCGv_ptr fpst);
+
+/*
+ * Types for callbacks for do_vfp_2op_sp() and do_vfp_2op_dp().
+ * The callback should emit code to write a value to vd (which
+ * should be written to only).
+ */
+typedef void VFPGen2OpSPFn(TCGv_i32 vd, TCGv_i32 vm);
+typedef void VFPGen2OpDPFn(TCGv_i64 vd, TCGv_i64 vm);
+
+/*
+ * Return true if the specified S reg is in a scalar bank
+ * (ie if it is s0..s7)
+ */
+static inline bool vfp_sreg_is_scalar(int reg)
+{
+ return (reg & 0x18) == 0;
+}
+
+/*
+ * Return true if the specified D reg is in a scalar bank
+ * (ie if it is d0..d3 or d16..d19)
+ */
+static inline bool vfp_dreg_is_scalar(int reg)
+{
+ return (reg & 0xc) == 0;
+}
+
+/*
+ * Advance the S reg number forwards by delta within its bank
+ * (ie increment the low 3 bits but leave the rest the same)
+ */
+static inline int vfp_advance_sreg(int reg, int delta)
+{
+ return ((reg + delta) & 0x7) | (reg & ~0x7);
+}
+
+/*
+ * Advance the D reg number forwards by delta within its bank
+ * (ie increment the low 2 bits but leave the rest the same)
+ */
+static inline int vfp_advance_dreg(int reg, int delta)
+{
+ return ((reg + delta) & 0x3) | (reg & ~0x3);
+}
+
+/*
+ * Perform a 3-operand VFP data processing instruction. fn is the
+ * callback to do the actual operation; this function deals with the
+ * code to handle looping around for VFP vector processing.
+ */
+static bool do_vfp_3op_sp(DisasContext *s, VFPGen3OpSPFn *fn,
+ int vd, int vn, int vm, bool reads_vd)
+{
+ uint32_t delta_m = 0;
+ uint32_t delta_d = 0;
+ int veclen = s->vec_len;
+ TCGv_i32 f0, f1, fd;
+ TCGv_ptr fpst;
+
+ if (!dc_isar_feature(aa32_fpshvec, s) &&
+ (veclen != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (veclen > 0) {
+ /* Figure out what type of vector operation this is. */
+ if (vfp_sreg_is_scalar(vd)) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ delta_d = s->vec_stride + 1;
+
+ if (vfp_sreg_is_scalar(vm)) {
+ /* mixed scalar/vector */
+ delta_m = 0;
+ } else {
+ /* vector */
+ delta_m = delta_d;
+ }
+ }
+ }
+
+ f0 = tcg_temp_new_i32();
+ f1 = tcg_temp_new_i32();
+ fd = tcg_temp_new_i32();
+ fpst = get_fpstatus_ptr(0);
+
+ neon_load_reg32(f0, vn);
+ neon_load_reg32(f1, vm);
+
+ for (;;) {
+ if (reads_vd) {
+ neon_load_reg32(fd, vd);
+ }
+ fn(fd, f0, f1, fpst);
+ neon_store_reg32(fd, vd);
+
+ if (veclen == 0) {
+ break;
+ }
+
+ /* Set up the operands for the next iteration */
+ veclen--;
+ vd = vfp_advance_sreg(vd, delta_d);
+ vn = vfp_advance_sreg(vn, delta_d);
+ neon_load_reg32(f0, vn);
+ if (delta_m) {
+ vm = vfp_advance_sreg(vm, delta_m);
+ neon_load_reg32(f1, vm);
+ }
+ }
+
+ tcg_temp_free_i32(f0);
+ tcg_temp_free_i32(f1);
+ tcg_temp_free_i32(fd);
+ tcg_temp_free_ptr(fpst);
+
+ return true;
+}
+
+static bool do_vfp_3op_dp(DisasContext *s, VFPGen3OpDPFn *fn,
+ int vd, int vn, int vm, bool reads_vd)
+{
+ uint32_t delta_m = 0;
+ uint32_t delta_d = 0;
+ int veclen = s->vec_len;
+ TCGv_i64 f0, f1, fd;
+ TCGv_ptr fpst;
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((vd | vn | vm) & 0x10)) {
+ return false;
+ }
+
+ if (!dc_isar_feature(aa32_fpshvec, s) &&
+ (veclen != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (veclen > 0) {
+ /* Figure out what type of vector operation this is. */
+ if (vfp_dreg_is_scalar(vd)) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ delta_d = (s->vec_stride >> 1) + 1;
+
+ if (vfp_dreg_is_scalar(vm)) {
+ /* mixed scalar/vector */
+ delta_m = 0;
+ } else {
+ /* vector */
+ delta_m = delta_d;
+ }
+ }
+ }
+
+ f0 = tcg_temp_new_i64();
+ f1 = tcg_temp_new_i64();
+ fd = tcg_temp_new_i64();
+ fpst = get_fpstatus_ptr(0);
+
+ neon_load_reg64(f0, vn);
+ neon_load_reg64(f1, vm);
+
+ for (;;) {
+ if (reads_vd) {
+ neon_load_reg64(fd, vd);
+ }
+ fn(fd, f0, f1, fpst);
+ neon_store_reg64(fd, vd);
+
+ if (veclen == 0) {
+ break;
+ }
+ /* Set up the operands for the next iteration */
+ veclen--;
+ vd = vfp_advance_dreg(vd, delta_d);
+ vn = vfp_advance_dreg(vn, delta_d);
+ neon_load_reg64(f0, vn);
+ if (delta_m) {
+ vm = vfp_advance_dreg(vm, delta_m);
+ neon_load_reg64(f1, vm);
+ }
+ }
+
+ tcg_temp_free_i64(f0);
+ tcg_temp_free_i64(f1);
+ tcg_temp_free_i64(fd);
+ tcg_temp_free_ptr(fpst);
+
+ return true;
+}
+
+static bool do_vfp_2op_sp(DisasContext *s, VFPGen2OpSPFn *fn, int vd, int vm)
+{
+ uint32_t delta_m = 0;
+ uint32_t delta_d = 0;
+ int veclen = s->vec_len;
+ TCGv_i32 f0, fd;
+
+ if (!dc_isar_feature(aa32_fpshvec, s) &&
+ (veclen != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (veclen > 0) {
+ /* Figure out what type of vector operation this is. */
+ if (vfp_sreg_is_scalar(vd)) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ delta_d = s->vec_stride + 1;
+
+ if (vfp_sreg_is_scalar(vm)) {
+ /* mixed scalar/vector */
+ delta_m = 0;
+ } else {
+ /* vector */
+ delta_m = delta_d;
+ }
+ }
+ }
+
+ f0 = tcg_temp_new_i32();
+ fd = tcg_temp_new_i32();
+
+ neon_load_reg32(f0, vm);
+
+ for (;;) {
+ fn(fd, f0);
+ neon_store_reg32(fd, vd);
+
+ if (veclen == 0) {
+ break;
+ }
+
+ if (delta_m == 0) {
+ /* single source one-many */
+ while (veclen--) {
+ vd = vfp_advance_sreg(vd, delta_d);
+ neon_store_reg32(fd, vd);
+ }
+ break;
+ }
+
+ /* Set up the operands for the next iteration */
+ veclen--;
+ vd = vfp_advance_sreg(vd, delta_d);
+ vm = vfp_advance_sreg(vm, delta_m);
+ neon_load_reg32(f0, vm);
+ }
+
+ tcg_temp_free_i32(f0);
+ tcg_temp_free_i32(fd);
+
+ return true;
+}
+
+static bool do_vfp_2op_dp(DisasContext *s, VFPGen2OpDPFn *fn, int vd, int vm)
+{
+ uint32_t delta_m = 0;
+ uint32_t delta_d = 0;
+ int veclen = s->vec_len;
+ TCGv_i64 f0, fd;
+
+ /* UNDEF accesses to D16-D31 if they don't exist */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((vd | vm) & 0x10)) {
+ return false;
+ }
+
+ if (!dc_isar_feature(aa32_fpshvec, s) &&
+ (veclen != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (veclen > 0) {
+ /* Figure out what type of vector operation this is. */
+ if (vfp_dreg_is_scalar(vd)) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ delta_d = (s->vec_stride >> 1) + 1;
+
+ if (vfp_dreg_is_scalar(vm)) {
+ /* mixed scalar/vector */
+ delta_m = 0;
+ } else {
+ /* vector */
+ delta_m = delta_d;
+ }
+ }
+ }
+
+ f0 = tcg_temp_new_i64();
+ fd = tcg_temp_new_i64();
+
+ neon_load_reg64(f0, vm);
+
+ for (;;) {
+ fn(fd, f0);
+ neon_store_reg64(fd, vd);
+
+ if (veclen == 0) {
+ break;
+ }
+
+ if (delta_m == 0) {
+ /* single source one-many */
+ while (veclen--) {
+ vd = vfp_advance_dreg(vd, delta_d);
+ neon_store_reg64(fd, vd);
+ }
+ break;
+ }
+
+ /* Set up the operands for the next iteration */
+ veclen--;
+ vd = vfp_advance_dreg(vd, delta_d);
+ vd = vfp_advance_dreg(vm, delta_m);
+ neon_load_reg64(f0, vm);
+ }
+
+ tcg_temp_free_i64(f0);
+ tcg_temp_free_i64(fd);
+
+ return true;
+}
+
+static void gen_VMLA_sp(TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm, TCGv_ptr fpst)
+{
+ /* Note that order of inputs to the add matters for NaNs */
+ TCGv_i32 tmp = tcg_temp_new_i32();
+
+ gen_helper_vfp_muls(tmp, vn, vm, fpst);
+ gen_helper_vfp_adds(vd, vd, tmp, fpst);
+ tcg_temp_free_i32(tmp);
+}
+
+static bool trans_VMLA_sp(DisasContext *s, arg_VMLA_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_VMLA_sp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VMLA_dp(TCGv_i64 vd, TCGv_i64 vn, TCGv_i64 vm, TCGv_ptr fpst)
+{
+ /* Note that order of inputs to the add matters for NaNs */
+ TCGv_i64 tmp = tcg_temp_new_i64();
+
+ gen_helper_vfp_muld(tmp, vn, vm, fpst);
+ gen_helper_vfp_addd(vd, vd, tmp, fpst);
+ tcg_temp_free_i64(tmp);
+}
+
+static bool trans_VMLA_dp(DisasContext *s, arg_VMLA_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_VMLA_dp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VMLS_sp(TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm, TCGv_ptr fpst)
+{
+ /*
+ * VMLS: vd = vd + -(vn * vm)
+ * Note that order of inputs to the add matters for NaNs.
+ */
+ TCGv_i32 tmp = tcg_temp_new_i32();
+
+ gen_helper_vfp_muls(tmp, vn, vm, fpst);
+ gen_helper_vfp_negs(tmp, tmp);
+ gen_helper_vfp_adds(vd, vd, tmp, fpst);
+ tcg_temp_free_i32(tmp);
+}
+
+static bool trans_VMLS_sp(DisasContext *s, arg_VMLS_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_VMLS_sp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VMLS_dp(TCGv_i64 vd, TCGv_i64 vn, TCGv_i64 vm, TCGv_ptr fpst)
+{
+ /*
+ * VMLS: vd = vd + -(vn * vm)
+ * Note that order of inputs to the add matters for NaNs.
+ */
+ TCGv_i64 tmp = tcg_temp_new_i64();
+
+ gen_helper_vfp_muld(tmp, vn, vm, fpst);
+ gen_helper_vfp_negd(tmp, tmp);
+ gen_helper_vfp_addd(vd, vd, tmp, fpst);
+ tcg_temp_free_i64(tmp);
+}
+
+static bool trans_VMLS_dp(DisasContext *s, arg_VMLS_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_VMLS_dp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VNMLS_sp(TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm, TCGv_ptr fpst)
+{
+ /*
+ * VNMLS: -fd + (fn * fm)
+ * Note that it isn't valid to replace (-A + B) with (B - A) or similar
+ * plausible looking simplifications because this will give wrong results
+ * for NaNs.
+ */
+ TCGv_i32 tmp = tcg_temp_new_i32();
+
+ gen_helper_vfp_muls(tmp, vn, vm, fpst);
+ gen_helper_vfp_negs(vd, vd);
+ gen_helper_vfp_adds(vd, vd, tmp, fpst);
+ tcg_temp_free_i32(tmp);
+}
+
+static bool trans_VNMLS_sp(DisasContext *s, arg_VNMLS_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_VNMLS_sp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VNMLS_dp(TCGv_i64 vd, TCGv_i64 vn, TCGv_i64 vm, TCGv_ptr fpst)
+{
+ /*
+ * VNMLS: -fd + (fn * fm)
+ * Note that it isn't valid to replace (-A + B) with (B - A) or similar
+ * plausible looking simplifications because this will give wrong results
+ * for NaNs.
+ */
+ TCGv_i64 tmp = tcg_temp_new_i64();
+
+ gen_helper_vfp_muld(tmp, vn, vm, fpst);
+ gen_helper_vfp_negd(vd, vd);
+ gen_helper_vfp_addd(vd, vd, tmp, fpst);
+ tcg_temp_free_i64(tmp);
+}
+
+static bool trans_VNMLS_dp(DisasContext *s, arg_VNMLS_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_VNMLS_dp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VNMLA_sp(TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm, TCGv_ptr fpst)
+{
+ /* VNMLA: -fd + -(fn * fm) */
+ TCGv_i32 tmp = tcg_temp_new_i32();
+
+ gen_helper_vfp_muls(tmp, vn, vm, fpst);
+ gen_helper_vfp_negs(tmp, tmp);
+ gen_helper_vfp_negs(vd, vd);
+ gen_helper_vfp_adds(vd, vd, tmp, fpst);
+ tcg_temp_free_i32(tmp);
+}
+
+static bool trans_VNMLA_sp(DisasContext *s, arg_VNMLA_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_VNMLA_sp, a->vd, a->vn, a->vm, true);
+}
+
+static void gen_VNMLA_dp(TCGv_i64 vd, TCGv_i64 vn, TCGv_i64 vm, TCGv_ptr fpst)
+{
+ /* VNMLA: -fd + (fn * fm) */
+ TCGv_i64 tmp = tcg_temp_new_i64();
+
+ gen_helper_vfp_muld(tmp, vn, vm, fpst);
+ gen_helper_vfp_negd(tmp, tmp);
+ gen_helper_vfp_negd(vd, vd);
+ gen_helper_vfp_addd(vd, vd, tmp, fpst);
+ tcg_temp_free_i64(tmp);
+}
+
+static bool trans_VNMLA_dp(DisasContext *s, arg_VNMLA_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_VNMLA_dp, a->vd, a->vn, a->vm, true);
+}
+
+static bool trans_VMUL_sp(DisasContext *s, arg_VMUL_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_helper_vfp_muls, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VMUL_dp(DisasContext *s, arg_VMUL_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_helper_vfp_muld, a->vd, a->vn, a->vm, false);
+}
+
+static void gen_VNMUL_sp(TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm, TCGv_ptr fpst)
+{
+ /* VNMUL: -(fn * fm) */
+ gen_helper_vfp_muls(vd, vn, vm, fpst);
+ gen_helper_vfp_negs(vd, vd);
+}
+
+static bool trans_VNMUL_sp(DisasContext *s, arg_VNMUL_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_VNMUL_sp, a->vd, a->vn, a->vm, false);
+}
+
+static void gen_VNMUL_dp(TCGv_i64 vd, TCGv_i64 vn, TCGv_i64 vm, TCGv_ptr fpst)
+{
+ /* VNMUL: -(fn * fm) */
+ gen_helper_vfp_muld(vd, vn, vm, fpst);
+ gen_helper_vfp_negd(vd, vd);
+}
+
+static bool trans_VNMUL_dp(DisasContext *s, arg_VNMUL_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_VNMUL_dp, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VADD_sp(DisasContext *s, arg_VADD_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_helper_vfp_adds, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VADD_dp(DisasContext *s, arg_VADD_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_helper_vfp_addd, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VSUB_sp(DisasContext *s, arg_VSUB_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_helper_vfp_subs, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VSUB_dp(DisasContext *s, arg_VSUB_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_helper_vfp_subd, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VDIV_sp(DisasContext *s, arg_VDIV_sp *a)
+{
+ return do_vfp_3op_sp(s, gen_helper_vfp_divs, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VDIV_dp(DisasContext *s, arg_VDIV_sp *a)
+{
+ return do_vfp_3op_dp(s, gen_helper_vfp_divd, a->vd, a->vn, a->vm, false);
+}
+
+static bool trans_VFM_sp(DisasContext *s, arg_VFM_sp *a)
+{
+ /*
+ * VFNMA : fd = muladd(-fd, fn, fm)
+ * VFNMS : fd = muladd(-fd, -fn, fm)
+ * VFMA : fd = muladd( fd, fn, fm)
+ * VFMS : fd = muladd( fd, -fn, fm)
+ *
+ * These are fused multiply-add, and must be done as one floating
+ * point operation with no rounding between the multiplication and
+ * addition steps. NB that doing the negations here as separate
+ * steps is correct : an input NaN should come out with its sign
+ * bit flipped if it is a negated-input.
+ */
+ TCGv_ptr fpst;
+ TCGv_i32 vn, vm, vd;
+
+ /*
+ * Present in VFPv4 only.
+ * In v7A, UNPREDICTABLE with non-zero vector length/stride; from
+ * v8A, must UNDEF. We choose to UNDEF for both v7A and v8A.
+ */
+ if (!arm_dc_feature(s, ARM_FEATURE_VFP4) ||
+ (s->vec_len != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vn = tcg_temp_new_i32();
+ vm = tcg_temp_new_i32();
+ vd = tcg_temp_new_i32();
+
+ neon_load_reg32(vn, a->vn);
+ neon_load_reg32(vm, a->vm);
+ if (a->o2) {
+ /* VFNMS, VFMS */
+ gen_helper_vfp_negs(vn, vn);
+ }
+ neon_load_reg32(vd, a->vd);
+ if (a->o1 & 1) {
+ /* VFNMA, VFNMS */
+ gen_helper_vfp_negs(vd, vd);
+ }
+ fpst = get_fpstatus_ptr(0);
+ gen_helper_vfp_muladds(vd, vn, vm, vd, fpst);
+ neon_store_reg32(vd, a->vd);
+
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(vn);
+ tcg_temp_free_i32(vm);
+ tcg_temp_free_i32(vd);
+
+ return true;
+}
+
+static bool trans_VFM_dp(DisasContext *s, arg_VFM_sp *a)
+{
+ /*
+ * VFNMA : fd = muladd(-fd, fn, fm)
+ * VFNMS : fd = muladd(-fd, -fn, fm)
+ * VFMA : fd = muladd( fd, fn, fm)
+ * VFMS : fd = muladd( fd, -fn, fm)
+ *
+ * These are fused multiply-add, and must be done as one floating
+ * point operation with no rounding between the multiplication and
+ * addition steps. NB that doing the negations here as separate
+ * steps is correct : an input NaN should come out with its sign
+ * bit flipped if it is a negated-input.
+ */
+ TCGv_ptr fpst;
+ TCGv_i64 vn, vm, vd;
+
+ /*
+ * Present in VFPv4 only.
+ * In v7A, UNPREDICTABLE with non-zero vector length/stride; from
+ * v8A, must UNDEF. We choose to UNDEF for both v7A and v8A.
+ */
+ if (!arm_dc_feature(s, ARM_FEATURE_VFP4) ||
+ (s->vec_len != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((a->vd | a->vn | a->vm) & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vn = tcg_temp_new_i64();
+ vm = tcg_temp_new_i64();
+ vd = tcg_temp_new_i64();
+
+ neon_load_reg64(vn, a->vn);
+ neon_load_reg64(vm, a->vm);
+ if (a->o2) {
+ /* VFNMS, VFMS */
+ gen_helper_vfp_negd(vn, vn);
+ }
+ neon_load_reg64(vd, a->vd);
+ if (a->o1 & 1) {
+ /* VFNMA, VFNMS */
+ gen_helper_vfp_negd(vd, vd);
+ }
+ fpst = get_fpstatus_ptr(0);
+ gen_helper_vfp_muladdd(vd, vn, vm, vd, fpst);
+ neon_store_reg64(vd, a->vd);
+
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i64(vn);
+ tcg_temp_free_i64(vm);
+ tcg_temp_free_i64(vd);
+
+ return true;
+}
+
+static bool trans_VMOV_imm_sp(DisasContext *s, arg_VMOV_imm_sp *a)
+{
+ uint32_t delta_d = 0;
+ int veclen = s->vec_len;
+ TCGv_i32 fd;
+ uint32_t n, i, vd;
+
+ vd = a->vd;
+
+ if (!dc_isar_feature(aa32_fpshvec, s) &&
+ (veclen != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!arm_dc_feature(s, ARM_FEATURE_VFP3)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (veclen > 0) {
+ /* Figure out what type of vector operation this is. */
+ if (vfp_sreg_is_scalar(vd)) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ delta_d = s->vec_stride + 1;
+ }
+ }
+
+ n = (a->imm4h << 28) & 0x80000000;
+ i = ((a->imm4h << 4) & 0x70) | a->imm4l;
+ if (i & 0x40) {
+ i |= 0x780;
+ } else {
+ i |= 0x800;
+ }
+ n |= i << 19;
+
+ fd = tcg_temp_new_i32();
+ tcg_gen_movi_i32(fd, n);
+
+ for (;;) {
+ neon_store_reg32(fd, vd);
+
+ if (veclen == 0) {
+ break;
+ }
+
+ /* Set up the operands for the next iteration */
+ veclen--;
+ vd = vfp_advance_sreg(vd, delta_d);
+ }
+
+ tcg_temp_free_i32(fd);
+ return true;
+}
+
+static bool trans_VMOV_imm_dp(DisasContext *s, arg_VMOV_imm_dp *a)
+{
+ uint32_t delta_d = 0;
+ int veclen = s->vec_len;
+ TCGv_i64 fd;
+ uint32_t n, i, vd;
+
+ vd = a->vd;
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (vd & 0x10)) {
+ return false;
+ }
+
+ if (!dc_isar_feature(aa32_fpshvec, s) &&
+ (veclen != 0 || s->vec_stride != 0)) {
+ return false;
+ }
+
+ if (!arm_dc_feature(s, ARM_FEATURE_VFP3)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ if (veclen > 0) {
+ /* Figure out what type of vector operation this is. */
+ if (vfp_dreg_is_scalar(vd)) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ delta_d = (s->vec_stride >> 1) + 1;
+ }
+ }
+
+ n = (a->imm4h << 28) & 0x80000000;
+ i = ((a->imm4h << 4) & 0x70) | a->imm4l;
+ if (i & 0x40) {
+ i |= 0x3f80;
+ } else {
+ i |= 0x4000;
+ }
+ n |= i << 16;
+
+ fd = tcg_temp_new_i64();
+ tcg_gen_movi_i64(fd, ((uint64_t)n) << 32);
+
+ for (;;) {
+ neon_store_reg64(fd, vd);
+
+ if (veclen == 0) {
+ break;
+ }
+
+ /* Set up the operands for the next iteration */
+ veclen--;
+ vfp_advance_dreg(vd, delta_d);
+ }
+
+ tcg_temp_free_i64(fd);
+ return true;
+}
+
+static bool trans_VMOV_reg_sp(DisasContext *s, arg_VMOV_reg_sp *a)
+{
+ return do_vfp_2op_sp(s, tcg_gen_mov_i32, a->vd, a->vm);
+}
+
+static bool trans_VMOV_reg_dp(DisasContext *s, arg_VMOV_reg_dp *a)
+{
+ return do_vfp_2op_dp(s, tcg_gen_mov_i64, a->vd, a->vm);
+}
+
+static bool trans_VABS_sp(DisasContext *s, arg_VABS_sp *a)
+{
+ return do_vfp_2op_sp(s, gen_helper_vfp_abss, a->vd, a->vm);
+}
+
+static bool trans_VABS_dp(DisasContext *s, arg_VABS_dp *a)
+{
+ return do_vfp_2op_dp(s, gen_helper_vfp_absd, a->vd, a->vm);
+}
+
+static bool trans_VNEG_sp(DisasContext *s, arg_VNEG_sp *a)
+{
+ return do_vfp_2op_sp(s, gen_helper_vfp_negs, a->vd, a->vm);
+}
+
+static bool trans_VNEG_dp(DisasContext *s, arg_VNEG_dp *a)
+{
+ return do_vfp_2op_dp(s, gen_helper_vfp_negd, a->vd, a->vm);
+}
+
+static void gen_VSQRT_sp(TCGv_i32 vd, TCGv_i32 vm)
+{
+ gen_helper_vfp_sqrts(vd, vm, cpu_env);
+}
+
+static bool trans_VSQRT_sp(DisasContext *s, arg_VSQRT_sp *a)
+{
+ return do_vfp_2op_sp(s, gen_VSQRT_sp, a->vd, a->vm);
+}
+
+static void gen_VSQRT_dp(TCGv_i64 vd, TCGv_i64 vm)
+{
+ gen_helper_vfp_sqrtd(vd, vm, cpu_env);
+}
+
+static bool trans_VSQRT_dp(DisasContext *s, arg_VSQRT_dp *a)
+{
+ return do_vfp_2op_dp(s, gen_VSQRT_dp, a->vd, a->vm);
+}
+
+static bool trans_VCMP_sp(DisasContext *s, arg_VCMP_sp *a)
+{
+ TCGv_i32 vd, vm;
+
+ /* Vm/M bits must be zero for the Z variant */
+ if (a->z && a->vm != 0) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vd = tcg_temp_new_i32();
+ vm = tcg_temp_new_i32();
+
+ neon_load_reg32(vd, a->vd);
+ if (a->z) {
+ tcg_gen_movi_i32(vm, 0);
+ } else {
+ neon_load_reg32(vm, a->vm);
+ }
+
+ if (a->e) {
+ gen_helper_vfp_cmpes(vd, vm, cpu_env);
+ } else {
+ gen_helper_vfp_cmps(vd, vm, cpu_env);
+ }
+
+ tcg_temp_free_i32(vd);
+ tcg_temp_free_i32(vm);
+
+ return true;
+}
+
+static bool trans_VCMP_dp(DisasContext *s, arg_VCMP_dp *a)
+{
+ TCGv_i64 vd, vm;
+
+ /* Vm/M bits must be zero for the Z variant */
+ if (a->z && a->vm != 0) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((a->vd | a->vm) & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vd = tcg_temp_new_i64();
+ vm = tcg_temp_new_i64();
+
+ neon_load_reg64(vd, a->vd);
+ if (a->z) {
+ tcg_gen_movi_i64(vm, 0);
+ } else {
+ neon_load_reg64(vm, a->vm);
+ }
+
+ if (a->e) {
+ gen_helper_vfp_cmped(vd, vm, cpu_env);
+ } else {
+ gen_helper_vfp_cmpd(vd, vm, cpu_env);
+ }
+
+ tcg_temp_free_i64(vd);
+ tcg_temp_free_i64(vm);
+
+ return true;
+}
+
+static bool trans_VCVT_f32_f16(DisasContext *s, arg_VCVT_f32_f16 *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 ahp_mode;
+ TCGv_i32 tmp;
+
+ if (!dc_isar_feature(aa32_fp16_spconv, s)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(false);
+ ahp_mode = get_ahp_flag();
+ tmp = tcg_temp_new_i32();
+ /* The T bit tells us if we want the low or high 16 bits of Vm */
+ tcg_gen_ld16u_i32(tmp, cpu_env, vfp_f16_offset(a->vm, a->t));
+ gen_helper_vfp_fcvt_f16_to_f32(tmp, tmp, fpst, ahp_mode);
+ neon_store_reg32(tmp, a->vd);
+ tcg_temp_free_i32(ahp_mode);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tmp);
+ return true;
+}
+
+static bool trans_VCVT_f64_f16(DisasContext *s, arg_VCVT_f64_f16 *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 ahp_mode;
+ TCGv_i32 tmp;
+ TCGv_i64 vd;
+
+ if (!dc_isar_feature(aa32_fp16_dpconv, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vd & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(false);
+ ahp_mode = get_ahp_flag();
+ tmp = tcg_temp_new_i32();
+ /* The T bit tells us if we want the low or high 16 bits of Vm */
+ tcg_gen_ld16u_i32(tmp, cpu_env, vfp_f16_offset(a->vm, a->t));
+ vd = tcg_temp_new_i64();
+ gen_helper_vfp_fcvt_f16_to_f64(vd, tmp, fpst, ahp_mode);
+ neon_store_reg64(vd, a->vd);
+ tcg_temp_free_i32(ahp_mode);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tmp);
+ tcg_temp_free_i64(vd);
+ return true;
+}
+
+static bool trans_VCVT_f16_f32(DisasContext *s, arg_VCVT_f16_f32 *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 ahp_mode;
+ TCGv_i32 tmp;
+
+ if (!dc_isar_feature(aa32_fp16_spconv, s)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(false);
+ ahp_mode = get_ahp_flag();
+ tmp = tcg_temp_new_i32();
+
+ neon_load_reg32(tmp, a->vm);
+ gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp_mode);
+ tcg_gen_st16_i32(tmp, cpu_env, vfp_f16_offset(a->vd, a->t));
+ tcg_temp_free_i32(ahp_mode);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tmp);
+ return true;
+}
+
+static bool trans_VCVT_f16_f64(DisasContext *s, arg_VCVT_f16_f64 *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 ahp_mode;
+ TCGv_i32 tmp;
+ TCGv_i64 vm;
+
+ if (!dc_isar_feature(aa32_fp16_dpconv, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(false);
+ ahp_mode = get_ahp_flag();
+ tmp = tcg_temp_new_i32();
+ vm = tcg_temp_new_i64();
+
+ neon_load_reg64(vm, a->vm);
+ gen_helper_vfp_fcvt_f64_to_f16(tmp, vm, fpst, ahp_mode);
+ tcg_temp_free_i64(vm);
+ tcg_gen_st16_i32(tmp, cpu_env, vfp_f16_offset(a->vd, a->t));
+ tcg_temp_free_i32(ahp_mode);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tmp);
+ return true;
+}
+
+static bool trans_VRINTR_sp(DisasContext *s, arg_VRINTR_sp *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 tmp;
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ gen_helper_rints(tmp, tmp, fpst);
+ neon_store_reg32(tmp, a->vd);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tmp);
+ return true;
+}
+
+static bool trans_VRINTR_dp(DisasContext *s, arg_VRINTR_sp *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i64 tmp;
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((a->vd | a->vm) & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = tcg_temp_new_i64();
+ neon_load_reg64(tmp, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ gen_helper_rintd(tmp, tmp, fpst);
+ neon_store_reg64(tmp, a->vd);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i64(tmp);
+ return true;
+}
+
+static bool trans_VRINTZ_sp(DisasContext *s, arg_VRINTZ_sp *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 tmp;
+ TCGv_i32 tcg_rmode;
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ tcg_rmode = tcg_const_i32(float_round_to_zero);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ gen_helper_rints(tmp, tmp, fpst);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ neon_store_reg32(tmp, a->vd);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tcg_rmode);
+ tcg_temp_free_i32(tmp);
+ return true;
+}
+
+static bool trans_VRINTZ_dp(DisasContext *s, arg_VRINTZ_sp *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i64 tmp;
+ TCGv_i32 tcg_rmode;
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((a->vd | a->vm) & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = tcg_temp_new_i64();
+ neon_load_reg64(tmp, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ tcg_rmode = tcg_const_i32(float_round_to_zero);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ gen_helper_rintd(tmp, tmp, fpst);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ neon_store_reg64(tmp, a->vd);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i64(tmp);
+ tcg_temp_free_i32(tcg_rmode);
+ return true;
+}
+
+static bool trans_VRINTX_sp(DisasContext *s, arg_VRINTX_sp *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i32 tmp;
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = tcg_temp_new_i32();
+ neon_load_reg32(tmp, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ gen_helper_rints_exact(tmp, tmp, fpst);
+ neon_store_reg32(tmp, a->vd);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i32(tmp);
+ return true;
+}
+
+static bool trans_VRINTX_dp(DisasContext *s, arg_VRINTX_dp *a)
+{
+ TCGv_ptr fpst;
+ TCGv_i64 tmp;
+
+ if (!dc_isar_feature(aa32_vrint, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && ((a->vd | a->vm) & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tmp = tcg_temp_new_i64();
+ neon_load_reg64(tmp, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ gen_helper_rintd_exact(tmp, tmp, fpst);
+ neon_store_reg64(tmp, a->vd);
+ tcg_temp_free_ptr(fpst);
+ tcg_temp_free_i64(tmp);
+ return true;
+}
+
+static bool trans_VCVT_sp(DisasContext *s, arg_VCVT_sp *a)
+{
+ TCGv_i64 vd;
+ TCGv_i32 vm;
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vd & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vm = tcg_temp_new_i32();
+ vd = tcg_temp_new_i64();
+ neon_load_reg32(vm, a->vm);
+ gen_helper_vfp_fcvtds(vd, vm, cpu_env);
+ neon_store_reg64(vd, a->vd);
+ tcg_temp_free_i32(vm);
+ tcg_temp_free_i64(vd);
+ return true;
+}
+
+static bool trans_VCVT_dp(DisasContext *s, arg_VCVT_dp *a)
+{
+ TCGv_i64 vm;
+ TCGv_i32 vd;
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vd = tcg_temp_new_i32();
+ vm = tcg_temp_new_i64();
+ neon_load_reg64(vm, a->vm);
+ gen_helper_vfp_fcvtsd(vd, vm, cpu_env);
+ neon_store_reg32(vd, a->vd);
+ tcg_temp_free_i32(vd);
+ tcg_temp_free_i64(vm);
+ return true;
+}
+
+static bool trans_VCVT_int_sp(DisasContext *s, arg_VCVT_int_sp *a)
+{
+ TCGv_i32 vm;
+ TCGv_ptr fpst;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vm = tcg_temp_new_i32();
+ neon_load_reg32(vm, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ if (a->s) {
+ /* i32 -> f32 */
+ gen_helper_vfp_sitos(vm, vm, fpst);
+ } else {
+ /* u32 -> f32 */
+ gen_helper_vfp_uitos(vm, vm, fpst);
+ }
+ neon_store_reg32(vm, a->vd);
+ tcg_temp_free_i32(vm);
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+static bool trans_VCVT_int_dp(DisasContext *s, arg_VCVT_int_dp *a)
+{
+ TCGv_i32 vm;
+ TCGv_i64 vd;
+ TCGv_ptr fpst;
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vd & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vm = tcg_temp_new_i32();
+ vd = tcg_temp_new_i64();
+ neon_load_reg32(vm, a->vm);
+ fpst = get_fpstatus_ptr(false);
+ if (a->s) {
+ /* i32 -> f64 */
+ gen_helper_vfp_sitod(vd, vm, fpst);
+ } else {
+ /* u32 -> f64 */
+ gen_helper_vfp_uitod(vd, vm, fpst);
+ }
+ neon_store_reg64(vd, a->vd);
+ tcg_temp_free_i32(vm);
+ tcg_temp_free_i64(vd);
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+static bool trans_VJCVT(DisasContext *s, arg_VJCVT *a)
+{
+ TCGv_i32 vd;
+ TCGv_i64 vm;
+
+ if (!dc_isar_feature(aa32_jscvt, s)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ vm = tcg_temp_new_i64();
+ vd = tcg_temp_new_i32();
+ neon_load_reg64(vm, a->vm);
+ gen_helper_vjcvt(vd, vm, cpu_env);
+ neon_store_reg32(vd, a->vd);
+ tcg_temp_free_i64(vm);
+ tcg_temp_free_i32(vd);
+ return true;
+}
+
+static bool trans_VCVT_fix_sp(DisasContext *s, arg_VCVT_fix_sp *a)
+{
+ TCGv_i32 vd, shift;
+ TCGv_ptr fpst;
+ int frac_bits;
+
+ if (!arm_dc_feature(s, ARM_FEATURE_VFP3)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ frac_bits = (a->opc & 1) ? (32 - a->imm) : (16 - a->imm);
+
+ vd = tcg_temp_new_i32();
+ neon_load_reg32(vd, a->vd);
+
+ fpst = get_fpstatus_ptr(false);
+ shift = tcg_const_i32(frac_bits);
+
+ /* Switch on op:U:sx bits */
+ switch (a->opc) {
+ case 0:
+ gen_helper_vfp_shtos(vd, vd, shift, fpst);
+ break;
+ case 1:
+ gen_helper_vfp_sltos(vd, vd, shift, fpst);
+ break;
+ case 2:
+ gen_helper_vfp_uhtos(vd, vd, shift, fpst);
+ break;
+ case 3:
+ gen_helper_vfp_ultos(vd, vd, shift, fpst);
+ break;
+ case 4:
+ gen_helper_vfp_toshs_round_to_zero(vd, vd, shift, fpst);
+ break;
+ case 5:
+ gen_helper_vfp_tosls_round_to_zero(vd, vd, shift, fpst);
+ break;
+ case 6:
+ gen_helper_vfp_touhs_round_to_zero(vd, vd, shift, fpst);
+ break;
+ case 7:
+ gen_helper_vfp_touls_round_to_zero(vd, vd, shift, fpst);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ neon_store_reg32(vd, a->vd);
+ tcg_temp_free_i32(vd);
+ tcg_temp_free_i32(shift);
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+static bool trans_VCVT_fix_dp(DisasContext *s, arg_VCVT_fix_dp *a)
+{
+ TCGv_i64 vd;
+ TCGv_i32 shift;
+ TCGv_ptr fpst;
+ int frac_bits;
+
+ if (!arm_dc_feature(s, ARM_FEATURE_VFP3)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vd & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ frac_bits = (a->opc & 1) ? (32 - a->imm) : (16 - a->imm);
+
+ vd = tcg_temp_new_i64();
+ neon_load_reg64(vd, a->vd);
+
+ fpst = get_fpstatus_ptr(false);
+ shift = tcg_const_i32(frac_bits);
+
+ /* Switch on op:U:sx bits */
+ switch (a->opc) {
+ case 0:
+ gen_helper_vfp_shtod(vd, vd, shift, fpst);
+ break;
+ case 1:
+ gen_helper_vfp_sltod(vd, vd, shift, fpst);
+ break;
+ case 2:
+ gen_helper_vfp_uhtod(vd, vd, shift, fpst);
+ break;
+ case 3:
+ gen_helper_vfp_ultod(vd, vd, shift, fpst);
+ break;
+ case 4:
+ gen_helper_vfp_toshd_round_to_zero(vd, vd, shift, fpst);
+ break;
+ case 5:
+ gen_helper_vfp_tosld_round_to_zero(vd, vd, shift, fpst);
+ break;
+ case 6:
+ gen_helper_vfp_touhd_round_to_zero(vd, vd, shift, fpst);
+ break;
+ case 7:
+ gen_helper_vfp_tould_round_to_zero(vd, vd, shift, fpst);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ neon_store_reg64(vd, a->vd);
+ tcg_temp_free_i64(vd);
+ tcg_temp_free_i32(shift);
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+static bool trans_VCVT_sp_int(DisasContext *s, arg_VCVT_sp_int *a)
+{
+ TCGv_i32 vm;
+ TCGv_ptr fpst;
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(false);
+ vm = tcg_temp_new_i32();
+ neon_load_reg32(vm, a->vm);
+
+ if (a->s) {
+ if (a->rz) {
+ gen_helper_vfp_tosizs(vm, vm, fpst);
+ } else {
+ gen_helper_vfp_tosis(vm, vm, fpst);
+ }
+ } else {
+ if (a->rz) {
+ gen_helper_vfp_touizs(vm, vm, fpst);
+ } else {
+ gen_helper_vfp_touis(vm, vm, fpst);
+ }
+ }
+ neon_store_reg32(vm, a->vd);
+ tcg_temp_free_i32(vm);
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
+
+static bool trans_VCVT_dp_int(DisasContext *s, arg_VCVT_dp_int *a)
+{
+ TCGv_i32 vd;
+ TCGv_i64 vm;
+ TCGv_ptr fpst;
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ fpst = get_fpstatus_ptr(false);
+ vm = tcg_temp_new_i64();
+ vd = tcg_temp_new_i32();
+ neon_load_reg64(vm, a->vm);
+
+ if (a->s) {
+ if (a->rz) {
+ gen_helper_vfp_tosizd(vd, vm, fpst);
+ } else {
+ gen_helper_vfp_tosid(vd, vm, fpst);
+ }
+ } else {
+ if (a->rz) {
+ gen_helper_vfp_touizd(vd, vm, fpst);
+ } else {
+ gen_helper_vfp_touid(vd, vm, fpst);
+ }
+ }
+ neon_store_reg32(vd, a->vd);
+ tcg_temp_free_i32(vd);
+ tcg_temp_free_i64(vm);
+ tcg_temp_free_ptr(fpst);
+ return true;
+}
diff --git a/target/arm/translate.c b/target/arm/translate.c
index d25e19e..c274c8b 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -1374,47 +1374,6 @@ static TCGv_ptr get_fpstatus_ptr(int neon)
return statusptr;
}
-#define VFP_OP2(name) \
-static inline void gen_vfp_##name(int dp) \
-{ \
- TCGv_ptr fpst = get_fpstatus_ptr(0); \
- if (dp) { \
- gen_helper_vfp_##name##d(cpu_F0d, cpu_F0d, cpu_F1d, fpst); \
- } else { \
- gen_helper_vfp_##name##s(cpu_F0s, cpu_F0s, cpu_F1s, fpst); \
- } \
- tcg_temp_free_ptr(fpst); \
-}
-
-VFP_OP2(add)
-VFP_OP2(sub)
-VFP_OP2(mul)
-VFP_OP2(div)
-
-#undef VFP_OP2
-
-static inline void gen_vfp_F1_mul(int dp)
-{
- /* Like gen_vfp_mul() but put result in F1 */
- TCGv_ptr fpst = get_fpstatus_ptr(0);
- if (dp) {
- gen_helper_vfp_muld(cpu_F1d, cpu_F0d, cpu_F1d, fpst);
- } else {
- gen_helper_vfp_muls(cpu_F1s, cpu_F0s, cpu_F1s, fpst);
- }
- tcg_temp_free_ptr(fpst);
-}
-
-static inline void gen_vfp_F1_neg(int dp)
-{
- /* Like gen_vfp_neg() but put result in F1 */
- if (dp) {
- gen_helper_vfp_negd(cpu_F1d, cpu_F0d);
- } else {
- gen_helper_vfp_negs(cpu_F1s, cpu_F0s);
- }
-}
-
static inline void gen_vfp_abs(int dp)
{
if (dp)
@@ -1431,38 +1390,6 @@ static inline void gen_vfp_neg(int dp)
gen_helper_vfp_negs(cpu_F0s, cpu_F0s);
}
-static inline void gen_vfp_sqrt(int dp)
-{
- if (dp)
- gen_helper_vfp_sqrtd(cpu_F0d, cpu_F0d, cpu_env);
- else
- gen_helper_vfp_sqrts(cpu_F0s, cpu_F0s, cpu_env);
-}
-
-static inline void gen_vfp_cmp(int dp)
-{
- if (dp)
- gen_helper_vfp_cmpd(cpu_F0d, cpu_F1d, cpu_env);
- else
- gen_helper_vfp_cmps(cpu_F0s, cpu_F1s, cpu_env);
-}
-
-static inline void gen_vfp_cmpe(int dp)
-{
- if (dp)
- gen_helper_vfp_cmped(cpu_F0d, cpu_F1d, cpu_env);
- else
- gen_helper_vfp_cmpes(cpu_F0s, cpu_F1s, cpu_env);
-}
-
-static inline void gen_vfp_F1_ld0(int dp)
-{
- if (dp)
- tcg_gen_movi_i64(cpu_F1d, 0);
- else
- tcg_gen_movi_i32(cpu_F1s, 0);
-}
-
#define VFP_GEN_ITOF(name) \
static inline void gen_vfp_##name(int dp, int neon) \
{ \
@@ -1491,9 +1418,7 @@ static inline void gen_vfp_##name(int dp, int neon) \
tcg_temp_free_ptr(statusptr); \
}
-VFP_GEN_FTOI(toui)
VFP_GEN_FTOI(touiz)
-VFP_GEN_FTOI(tosi)
VFP_GEN_FTOI(tosiz)
#undef VFP_GEN_FTOI
@@ -1512,34 +1437,12 @@ static inline void gen_vfp_##name(int dp, int shift, int neon) \
tcg_temp_free_i32(tmp_shift); \
tcg_temp_free_ptr(statusptr); \
}
-VFP_GEN_FIX(tosh, _round_to_zero)
VFP_GEN_FIX(tosl, _round_to_zero)
-VFP_GEN_FIX(touh, _round_to_zero)
VFP_GEN_FIX(toul, _round_to_zero)
-VFP_GEN_FIX(shto, )
VFP_GEN_FIX(slto, )
-VFP_GEN_FIX(uhto, )
VFP_GEN_FIX(ulto, )
#undef VFP_GEN_FIX
-static inline void gen_vfp_ld(DisasContext *s, int dp, TCGv_i32 addr)
-{
- if (dp) {
- gen_aa32_ld64(s, cpu_F0d, addr, get_mem_index(s));
- } else {
- gen_aa32_ld32u(s, cpu_F0s, addr, get_mem_index(s));
- }
-}
-
-static inline void gen_vfp_st(DisasContext *s, int dp, TCGv_i32 addr)
-{
- if (dp) {
- gen_aa32_st64(s, cpu_F0d, addr, get_mem_index(s));
- } else {
- gen_aa32_st32(s, cpu_F0s, addr, get_mem_index(s));
- }
-}
-
static inline long vfp_reg_offset(bool dp, unsigned reg)
{
if (dp) {
@@ -1689,44 +1592,31 @@ static inline void neon_store_reg64(TCGv_i64 var, int reg)
tcg_gen_st_i64(var, cpu_env, vfp_reg_offset(1, reg));
}
-static TCGv_ptr vfp_reg_ptr(bool dp, int reg)
+static inline void neon_load_reg32(TCGv_i32 var, int reg)
{
- TCGv_ptr ret = tcg_temp_new_ptr();
- tcg_gen_addi_ptr(ret, cpu_env, vfp_reg_offset(dp, reg));
- return ret;
+ tcg_gen_ld_i32(var, cpu_env, vfp_reg_offset(false, reg));
}
-#define tcg_gen_ld_f32 tcg_gen_ld_i32
-#define tcg_gen_ld_f64 tcg_gen_ld_i64
-#define tcg_gen_st_f32 tcg_gen_st_i32
-#define tcg_gen_st_f64 tcg_gen_st_i64
-
-static inline void gen_mov_F0_vreg(int dp, int reg)
+static inline void neon_store_reg32(TCGv_i32 var, int reg)
{
- if (dp)
- tcg_gen_ld_f64(cpu_F0d, cpu_env, vfp_reg_offset(dp, reg));
- else
- tcg_gen_ld_f32(cpu_F0s, cpu_env, vfp_reg_offset(dp, reg));
+ tcg_gen_st_i32(var, cpu_env, vfp_reg_offset(false, reg));
}
-static inline void gen_mov_F1_vreg(int dp, int reg)
+static TCGv_ptr vfp_reg_ptr(bool dp, int reg)
{
- if (dp)
- tcg_gen_ld_f64(cpu_F1d, cpu_env, vfp_reg_offset(dp, reg));
- else
- tcg_gen_ld_f32(cpu_F1s, cpu_env, vfp_reg_offset(dp, reg));
+ TCGv_ptr ret = tcg_temp_new_ptr();
+ tcg_gen_addi_ptr(ret, cpu_env, vfp_reg_offset(dp, reg));
+ return ret;
}
-static inline void gen_mov_vreg_F0(int dp, int reg)
-{
- if (dp)
- tcg_gen_st_f64(cpu_F0d, cpu_env, vfp_reg_offset(dp, reg));
- else
- tcg_gen_st_f32(cpu_F0s, cpu_env, vfp_reg_offset(dp, reg));
-}
+#define tcg_gen_ld_f32 tcg_gen_ld_i32
+#define tcg_gen_st_f32 tcg_gen_st_i32
#define ARM_CP_RW_BIT (1 << 20)
+/* Include the VFP decoder */
+#include "translate-vfp.inc.c"
+
static inline void iwmmxt_load_reg(TCGv_i64 var, int reg)
{
tcg_gen_ld_i64(var, cpu_env, offsetof(CPUARMState, iwmmxt.regs[reg]));
@@ -3041,20 +2931,6 @@ static int disas_dsp_insn(DisasContext *s, uint32_t insn)
#define VFP_SREG_M(insn) VFP_SREG(insn, 0, 5)
#define VFP_DREG_M(reg, insn) VFP_DREG(reg, insn, 0, 5)
-/* Move between integer and VFP cores. */
-static TCGv_i32 gen_vfp_mrs(void)
-{
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_mov_i32(tmp, cpu_F0s);
- return tmp;
-}
-
-static void gen_vfp_msr(TCGv_i32 tmp)
-{
- tcg_gen_mov_i32(cpu_F0s, tmp);
- tcg_temp_free_i32(tmp);
-}
-
static void gen_neon_dup_low16(TCGv_i32 var)
{
TCGv_i32 tmp = tcg_temp_new_i32();
@@ -3073,1356 +2949,33 @@ static void gen_neon_dup_high16(TCGv_i32 var)
tcg_temp_free_i32(tmp);
}
-static int handle_vsel(uint32_t insn, uint32_t rd, uint32_t rn, uint32_t rm,
- uint32_t dp)
-{
- uint32_t cc = extract32(insn, 20, 2);
-
- if (dp) {
- TCGv_i64 frn, frm, dest;
- TCGv_i64 tmp, zero, zf, nf, vf;
-
- zero = tcg_const_i64(0);
-
- frn = tcg_temp_new_i64();
- frm = tcg_temp_new_i64();
- dest = tcg_temp_new_i64();
-
- zf = tcg_temp_new_i64();
- nf = tcg_temp_new_i64();
- vf = tcg_temp_new_i64();
-
- tcg_gen_extu_i32_i64(zf, cpu_ZF);
- tcg_gen_ext_i32_i64(nf, cpu_NF);
- tcg_gen_ext_i32_i64(vf, cpu_VF);
-
- tcg_gen_ld_f64(frn, cpu_env, vfp_reg_offset(dp, rn));
- tcg_gen_ld_f64(frm, cpu_env, vfp_reg_offset(dp, rm));
- switch (cc) {
- case 0: /* eq: Z */
- tcg_gen_movcond_i64(TCG_COND_EQ, dest, zf, zero,
- frn, frm);
- break;
- case 1: /* vs: V */
- tcg_gen_movcond_i64(TCG_COND_LT, dest, vf, zero,
- frn, frm);
- break;
- case 2: /* ge: N == V -> N ^ V == 0 */
- tmp = tcg_temp_new_i64();
- tcg_gen_xor_i64(tmp, vf, nf);
- tcg_gen_movcond_i64(TCG_COND_GE, dest, tmp, zero,
- frn, frm);
- tcg_temp_free_i64(tmp);
- break;
- case 3: /* gt: !Z && N == V */
- tcg_gen_movcond_i64(TCG_COND_NE, dest, zf, zero,
- frn, frm);
- tmp = tcg_temp_new_i64();
- tcg_gen_xor_i64(tmp, vf, nf);
- tcg_gen_movcond_i64(TCG_COND_GE, dest, tmp, zero,
- dest, frm);
- tcg_temp_free_i64(tmp);
- break;
- }
- tcg_gen_st_f64(dest, cpu_env, vfp_reg_offset(dp, rd));
- tcg_temp_free_i64(frn);
- tcg_temp_free_i64(frm);
- tcg_temp_free_i64(dest);
-
- tcg_temp_free_i64(zf);
- tcg_temp_free_i64(nf);
- tcg_temp_free_i64(vf);
-
- tcg_temp_free_i64(zero);
- } else {
- TCGv_i32 frn, frm, dest;
- TCGv_i32 tmp, zero;
-
- zero = tcg_const_i32(0);
-
- frn = tcg_temp_new_i32();
- frm = tcg_temp_new_i32();
- dest = tcg_temp_new_i32();
- tcg_gen_ld_f32(frn, cpu_env, vfp_reg_offset(dp, rn));
- tcg_gen_ld_f32(frm, cpu_env, vfp_reg_offset(dp, rm));
- switch (cc) {
- case 0: /* eq: Z */
- tcg_gen_movcond_i32(TCG_COND_EQ, dest, cpu_ZF, zero,
- frn, frm);
- break;
- case 1: /* vs: V */
- tcg_gen_movcond_i32(TCG_COND_LT, dest, cpu_VF, zero,
- frn, frm);
- break;
- case 2: /* ge: N == V -> N ^ V == 0 */
- tmp = tcg_temp_new_i32();
- tcg_gen_xor_i32(tmp, cpu_VF, cpu_NF);
- tcg_gen_movcond_i32(TCG_COND_GE, dest, tmp, zero,
- frn, frm);
- tcg_temp_free_i32(tmp);
- break;
- case 3: /* gt: !Z && N == V */
- tcg_gen_movcond_i32(TCG_COND_NE, dest, cpu_ZF, zero,
- frn, frm);
- tmp = tcg_temp_new_i32();
- tcg_gen_xor_i32(tmp, cpu_VF, cpu_NF);
- tcg_gen_movcond_i32(TCG_COND_GE, dest, tmp, zero,
- dest, frm);
- tcg_temp_free_i32(tmp);
- break;
- }
- tcg_gen_st_f32(dest, cpu_env, vfp_reg_offset(dp, rd));
- tcg_temp_free_i32(frn);
- tcg_temp_free_i32(frm);
- tcg_temp_free_i32(dest);
-
- tcg_temp_free_i32(zero);
- }
-
- return 0;
-}
-
-static int handle_vminmaxnm(uint32_t insn, uint32_t rd, uint32_t rn,
- uint32_t rm, uint32_t dp)
-{
- uint32_t vmin = extract32(insn, 6, 1);
- TCGv_ptr fpst = get_fpstatus_ptr(0);
-
- if (dp) {
- TCGv_i64 frn, frm, dest;
-
- frn = tcg_temp_new_i64();
- frm = tcg_temp_new_i64();
- dest = tcg_temp_new_i64();
-
- tcg_gen_ld_f64(frn, cpu_env, vfp_reg_offset(dp, rn));
- tcg_gen_ld_f64(frm, cpu_env, vfp_reg_offset(dp, rm));
- if (vmin) {
- gen_helper_vfp_minnumd(dest, frn, frm, fpst);
- } else {
- gen_helper_vfp_maxnumd(dest, frn, frm, fpst);
- }
- tcg_gen_st_f64(dest, cpu_env, vfp_reg_offset(dp, rd));
- tcg_temp_free_i64(frn);
- tcg_temp_free_i64(frm);
- tcg_temp_free_i64(dest);
- } else {
- TCGv_i32 frn, frm, dest;
-
- frn = tcg_temp_new_i32();
- frm = tcg_temp_new_i32();
- dest = tcg_temp_new_i32();
-
- tcg_gen_ld_f32(frn, cpu_env, vfp_reg_offset(dp, rn));
- tcg_gen_ld_f32(frm, cpu_env, vfp_reg_offset(dp, rm));
- if (vmin) {
- gen_helper_vfp_minnums(dest, frn, frm, fpst);
- } else {
- gen_helper_vfp_maxnums(dest, frn, frm, fpst);
- }
- tcg_gen_st_f32(dest, cpu_env, vfp_reg_offset(dp, rd));
- tcg_temp_free_i32(frn);
- tcg_temp_free_i32(frm);
- tcg_temp_free_i32(dest);
- }
-
- tcg_temp_free_ptr(fpst);
- return 0;
-}
-
-static int handle_vrint(uint32_t insn, uint32_t rd, uint32_t rm, uint32_t dp,
- int rounding)
-{
- TCGv_ptr fpst = get_fpstatus_ptr(0);
- TCGv_i32 tcg_rmode;
-
- tcg_rmode = tcg_const_i32(arm_rmode_to_sf(rounding));
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
-
- if (dp) {
- TCGv_i64 tcg_op;
- TCGv_i64 tcg_res;
- tcg_op = tcg_temp_new_i64();
- tcg_res = tcg_temp_new_i64();
- tcg_gen_ld_f64(tcg_op, cpu_env, vfp_reg_offset(dp, rm));
- gen_helper_rintd(tcg_res, tcg_op, fpst);
- tcg_gen_st_f64(tcg_res, cpu_env, vfp_reg_offset(dp, rd));
- tcg_temp_free_i64(tcg_op);
- tcg_temp_free_i64(tcg_res);
- } else {
- TCGv_i32 tcg_op;
- TCGv_i32 tcg_res;
- tcg_op = tcg_temp_new_i32();
- tcg_res = tcg_temp_new_i32();
- tcg_gen_ld_f32(tcg_op, cpu_env, vfp_reg_offset(dp, rm));
- gen_helper_rints(tcg_res, tcg_op, fpst);
- tcg_gen_st_f32(tcg_res, cpu_env, vfp_reg_offset(dp, rd));
- tcg_temp_free_i32(tcg_op);
- tcg_temp_free_i32(tcg_res);
- }
-
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- tcg_temp_free_i32(tcg_rmode);
-
- tcg_temp_free_ptr(fpst);
- return 0;
-}
-
-static int handle_vcvt(uint32_t insn, uint32_t rd, uint32_t rm, uint32_t dp,
- int rounding)
-{
- bool is_signed = extract32(insn, 7, 1);
- TCGv_ptr fpst = get_fpstatus_ptr(0);
- TCGv_i32 tcg_rmode, tcg_shift;
-
- tcg_shift = tcg_const_i32(0);
-
- tcg_rmode = tcg_const_i32(arm_rmode_to_sf(rounding));
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
-
- if (dp) {
- TCGv_i64 tcg_double, tcg_res;
- TCGv_i32 tcg_tmp;
- /* Rd is encoded as a single precision register even when the source
- * is double precision.
- */
- rd = ((rd << 1) & 0x1e) | ((rd >> 4) & 0x1);
- tcg_double = tcg_temp_new_i64();
- tcg_res = tcg_temp_new_i64();
- tcg_tmp = tcg_temp_new_i32();
- tcg_gen_ld_f64(tcg_double, cpu_env, vfp_reg_offset(1, rm));
- if (is_signed) {
- gen_helper_vfp_tosld(tcg_res, tcg_double, tcg_shift, fpst);
- } else {
- gen_helper_vfp_tould(tcg_res, tcg_double, tcg_shift, fpst);
- }
- tcg_gen_extrl_i64_i32(tcg_tmp, tcg_res);
- tcg_gen_st_f32(tcg_tmp, cpu_env, vfp_reg_offset(0, rd));
- tcg_temp_free_i32(tcg_tmp);
- tcg_temp_free_i64(tcg_res);
- tcg_temp_free_i64(tcg_double);
- } else {
- TCGv_i32 tcg_single, tcg_res;
- tcg_single = tcg_temp_new_i32();
- tcg_res = tcg_temp_new_i32();
- tcg_gen_ld_f32(tcg_single, cpu_env, vfp_reg_offset(0, rm));
- if (is_signed) {
- gen_helper_vfp_tosls(tcg_res, tcg_single, tcg_shift, fpst);
- } else {
- gen_helper_vfp_touls(tcg_res, tcg_single, tcg_shift, fpst);
- }
- tcg_gen_st_f32(tcg_res, cpu_env, vfp_reg_offset(0, rd));
- tcg_temp_free_i32(tcg_res);
- tcg_temp_free_i32(tcg_single);
- }
-
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- tcg_temp_free_i32(tcg_rmode);
-
- tcg_temp_free_i32(tcg_shift);
-
- tcg_temp_free_ptr(fpst);
-
- return 0;
-}
-
-/* Table for converting the most common AArch32 encoding of
- * rounding mode to arm_fprounding order (which matches the
- * common AArch64 order); see ARM ARM pseudocode FPDecodeRM().
+/*
+ * Disassemble a VFP instruction. Returns nonzero if an error occurred
+ * (ie. an undefined instruction).
*/
-static const uint8_t fp_decode_rm[] = {
- FPROUNDING_TIEAWAY,
- FPROUNDING_TIEEVEN,
- FPROUNDING_POSINF,
- FPROUNDING_NEGINF,
-};
-
-static int disas_vfp_misc_insn(DisasContext *s, uint32_t insn)
-{
- uint32_t rd, rn, rm, dp = extract32(insn, 8, 1);
-
- if (dp) {
- VFP_DREG_D(rd, insn);
- VFP_DREG_N(rn, insn);
- VFP_DREG_M(rm, insn);
- } else {
- rd = VFP_SREG_D(insn);
- rn = VFP_SREG_N(insn);
- rm = VFP_SREG_M(insn);
- }
-
- if ((insn & 0x0f800e50) == 0x0e000a00 && dc_isar_feature(aa32_vsel, s)) {
- return handle_vsel(insn, rd, rn, rm, dp);
- } else if ((insn & 0x0fb00e10) == 0x0e800a00 &&
- dc_isar_feature(aa32_vminmaxnm, s)) {
- return handle_vminmaxnm(insn, rd, rn, rm, dp);
- } else if ((insn & 0x0fbc0ed0) == 0x0eb80a40 &&
- dc_isar_feature(aa32_vrint, s)) {
- /* VRINTA, VRINTN, VRINTP, VRINTM */
- int rounding = fp_decode_rm[extract32(insn, 16, 2)];
- return handle_vrint(insn, rd, rm, dp, rounding);
- } else if ((insn & 0x0fbc0e50) == 0x0ebc0a40 &&
- dc_isar_feature(aa32_vcvt_dr, s)) {
- /* VCVTA, VCVTN, VCVTP, VCVTM */
- int rounding = fp_decode_rm[extract32(insn, 16, 2)];
- return handle_vcvt(insn, rd, rm, dp, rounding);
- }
- return 1;
-}
-
-/* Disassemble a VFP instruction. Returns nonzero if an error occurred
- (ie. an undefined instruction). */
static int disas_vfp_insn(DisasContext *s, uint32_t insn)
{
- uint32_t rd, rn, rm, op, i, n, offset, delta_d, delta_m, bank_mask;
- int dp, veclen;
- TCGv_i32 addr;
- TCGv_i32 tmp;
- TCGv_i32 tmp2;
-
if (!arm_dc_feature(s, ARM_FEATURE_VFP)) {
return 1;
}
- /* FIXME: this access check should not take precedence over UNDEF
- * for invalid encodings; we will generate incorrect syndrome information
- * for attempts to execute invalid vfp/neon encodings with FP disabled.
+ /*
+ * If the decodetree decoder handles this insn it will always
+ * emit code to either execute the insn or generate an appropriate
+ * exception; so we don't need to ever return non-zero to tell
+ * the calling code to emit an UNDEF exception.
*/
- if (s->fp_excp_el) {
- if (arm_dc_feature(s, ARM_FEATURE_M)) {
- gen_exception_insn(s, 4, EXCP_NOCP, syn_uncategorized(),
- s->fp_excp_el);
- } else {
- gen_exception_insn(s, 4, EXCP_UDEF,
- syn_fp_access_trap(1, 0xe, false),
- s->fp_excp_el);
- }
- return 0;
- }
-
- if (!s->vfp_enabled) {
- /* VFP disabled. Only allow fmxr/fmrx to/from some control regs. */
- if ((insn & 0x0fe00fff) != 0x0ee00a10)
- return 1;
- rn = (insn >> 16) & 0xf;
- if (rn != ARM_VFP_FPSID && rn != ARM_VFP_FPEXC && rn != ARM_VFP_MVFR2
- && rn != ARM_VFP_MVFR1 && rn != ARM_VFP_MVFR0) {
- return 1;
- }
- }
-
- if (arm_dc_feature(s, ARM_FEATURE_M)) {
- /* Handle M-profile lazy FP state mechanics */
-
- /* Trigger lazy-state preservation if necessary */
- if (s->v7m_lspact) {
- /*
- * Lazy state saving affects external memory and also the NVIC,
- * so we must mark it as an IO operation for icount.
- */
- if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
- gen_io_start();
- }
- gen_helper_v7m_preserve_fp_state(cpu_env);
- if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
- gen_io_end();
- }
- /*
- * If the preserve_fp_state helper doesn't throw an exception
- * then it will clear LSPACT; we don't need to repeat this for
- * any further FP insns in this TB.
- */
- s->v7m_lspact = false;
- }
-
- /* Update ownership of FP context: set FPCCR.S to match current state */
- if (s->v8m_fpccr_s_wrong) {
- TCGv_i32 tmp;
-
- tmp = load_cpu_field(v7m.fpccr[M_REG_S]);
- if (s->v8m_secure) {
- tcg_gen_ori_i32(tmp, tmp, R_V7M_FPCCR_S_MASK);
- } else {
- tcg_gen_andi_i32(tmp, tmp, ~R_V7M_FPCCR_S_MASK);
- }
- store_cpu_field(tmp, v7m.fpccr[M_REG_S]);
- /* Don't need to do this for any further FP insns in this TB */
- s->v8m_fpccr_s_wrong = false;
- }
-
- if (s->v7m_new_fp_ctxt_needed) {
- /*
- * Create new FP context by updating CONTROL.FPCA, CONTROL.SFPA
- * and the FPSCR.
- */
- TCGv_i32 control, fpscr;
- uint32_t bits = R_V7M_CONTROL_FPCA_MASK;
-
- fpscr = load_cpu_field(v7m.fpdscr[s->v8m_secure]);
- gen_helper_vfp_set_fpscr(cpu_env, fpscr);
- tcg_temp_free_i32(fpscr);
- /*
- * We don't need to arrange to end the TB, because the only
- * parts of FPSCR which we cache in the TB flags are the VECLEN
- * and VECSTRIDE, and those don't exist for M-profile.
- */
-
- if (s->v8m_secure) {
- bits |= R_V7M_CONTROL_SFPA_MASK;
- }
- control = load_cpu_field(v7m.control[M_REG_S]);
- tcg_gen_ori_i32(control, control, bits);
- store_cpu_field(control, v7m.control[M_REG_S]);
- /* Don't need to do this for any further FP insns in this TB */
- s->v7m_new_fp_ctxt_needed = false;
- }
- }
-
if (extract32(insn, 28, 4) == 0xf) {
- /*
- * Encodings with T=1 (Thumb) or unconditional (ARM):
- * only used for the "miscellaneous VFP features" added in v8A
- * and v7M (and gated on the MVFR2.FPMisc field).
- */
- return disas_vfp_misc_insn(s, insn);
- }
-
- dp = ((insn & 0xf00) == 0xb00);
- switch ((insn >> 24) & 0xf) {
- case 0xe:
- if (insn & (1 << 4)) {
- /* single register transfer */
- rd = (insn >> 12) & 0xf;
- if (dp) {
- int size;
- int pass;
-
- VFP_DREG_N(rn, insn);
- if (insn & 0xf)
- return 1;
- if (insn & 0x00c00060
- && !arm_dc_feature(s, ARM_FEATURE_NEON)) {
- return 1;
- }
-
- pass = (insn >> 21) & 1;
- if (insn & (1 << 22)) {
- size = 0;
- offset = ((insn >> 5) & 3) * 8;
- } else if (insn & (1 << 5)) {
- size = 1;
- offset = (insn & (1 << 6)) ? 16 : 0;
- } else {
- size = 2;
- offset = 0;
- }
- if (insn & ARM_CP_RW_BIT) {
- /* vfp->arm */
- tmp = neon_load_reg(rn, pass);
- switch (size) {
- case 0:
- if (offset)
- tcg_gen_shri_i32(tmp, tmp, offset);
- if (insn & (1 << 23))
- gen_uxtb(tmp);
- else
- gen_sxtb(tmp);
- break;
- case 1:
- if (insn & (1 << 23)) {
- if (offset) {
- tcg_gen_shri_i32(tmp, tmp, 16);
- } else {
- gen_uxth(tmp);
- }
- } else {
- if (offset) {
- tcg_gen_sari_i32(tmp, tmp, 16);
- } else {
- gen_sxth(tmp);
- }
- }
- break;
- case 2:
- break;
- }
- store_reg(s, rd, tmp);
- } else {
- /* arm->vfp */
- tmp = load_reg(s, rd);
- if (insn & (1 << 23)) {
- /* VDUP */
- int vec_size = pass ? 16 : 8;
- tcg_gen_gvec_dup_i32(size, neon_reg_offset(rn, 0),
- vec_size, vec_size, tmp);
- tcg_temp_free_i32(tmp);
- } else {
- /* VMOV */
- switch (size) {
- case 0:
- tmp2 = neon_load_reg(rn, pass);
- tcg_gen_deposit_i32(tmp, tmp2, tmp, offset, 8);
- tcg_temp_free_i32(tmp2);
- break;
- case 1:
- tmp2 = neon_load_reg(rn, pass);
- tcg_gen_deposit_i32(tmp, tmp2, tmp, offset, 16);
- tcg_temp_free_i32(tmp2);
- break;
- case 2:
- break;
- }
- neon_store_reg(rn, pass, tmp);
- }
- }
- } else { /* !dp */
- bool is_sysreg;
-
- if ((insn & 0x6f) != 0x00)
- return 1;
- rn = VFP_SREG_N(insn);
-
- is_sysreg = extract32(insn, 21, 1);
-
- if (arm_dc_feature(s, ARM_FEATURE_M)) {
- /*
- * The only M-profile VFP vmrs/vmsr sysreg is FPSCR.
- * Writes to R15 are UNPREDICTABLE; we choose to undef.
- */
- if (is_sysreg && (rd == 15 || (rn >> 1) != ARM_VFP_FPSCR)) {
- return 1;
- }
- }
-
- if (insn & ARM_CP_RW_BIT) {
- /* vfp->arm */
- if (is_sysreg) {
- /* system register */
- rn >>= 1;
-
- switch (rn) {
- case ARM_VFP_FPSID:
- /* VFP2 allows access to FSID from userspace.
- VFP3 restricts all id registers to privileged
- accesses. */
- if (IS_USER(s)
- && arm_dc_feature(s, ARM_FEATURE_VFP3)) {
- return 1;
- }
- tmp = load_cpu_field(vfp.xregs[rn]);
- break;
- case ARM_VFP_FPEXC:
- if (IS_USER(s))
- return 1;
- tmp = load_cpu_field(vfp.xregs[rn]);
- break;
- case ARM_VFP_FPINST:
- case ARM_VFP_FPINST2:
- /* Not present in VFP3. */
- if (IS_USER(s)
- || arm_dc_feature(s, ARM_FEATURE_VFP3)) {
- return 1;
- }
- tmp = load_cpu_field(vfp.xregs[rn]);
- break;
- case ARM_VFP_FPSCR:
- if (rd == 15) {
- tmp = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]);
- tcg_gen_andi_i32(tmp, tmp, 0xf0000000);
- } else {
- tmp = tcg_temp_new_i32();
- gen_helper_vfp_get_fpscr(tmp, cpu_env);
- }
- break;
- case ARM_VFP_MVFR2:
- if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
- return 1;
- }
- /* fall through */
- case ARM_VFP_MVFR0:
- case ARM_VFP_MVFR1:
- if (IS_USER(s)
- || !arm_dc_feature(s, ARM_FEATURE_MVFR)) {
- return 1;
- }
- tmp = load_cpu_field(vfp.xregs[rn]);
- break;
- default:
- return 1;
- }
- } else {
- gen_mov_F0_vreg(0, rn);
- tmp = gen_vfp_mrs();
- }
- if (rd == 15) {
- /* Set the 4 flag bits in the CPSR. */
- gen_set_nzcv(tmp);
- tcg_temp_free_i32(tmp);
- } else {
- store_reg(s, rd, tmp);
- }
- } else {
- /* arm->vfp */
- if (is_sysreg) {
- rn >>= 1;
- /* system register */
- switch (rn) {
- case ARM_VFP_FPSID:
- case ARM_VFP_MVFR0:
- case ARM_VFP_MVFR1:
- /* Writes are ignored. */
- break;
- case ARM_VFP_FPSCR:
- tmp = load_reg(s, rd);
- gen_helper_vfp_set_fpscr(cpu_env, tmp);
- tcg_temp_free_i32(tmp);
- gen_lookup_tb(s);
- break;
- case ARM_VFP_FPEXC:
- if (IS_USER(s))
- return 1;
- /* TODO: VFP subarchitecture support.
- * For now, keep the EN bit only */
- tmp = load_reg(s, rd);
- tcg_gen_andi_i32(tmp, tmp, 1 << 30);
- store_cpu_field(tmp, vfp.xregs[rn]);
- gen_lookup_tb(s);
- break;
- case ARM_VFP_FPINST:
- case ARM_VFP_FPINST2:
- if (IS_USER(s)) {
- return 1;
- }
- tmp = load_reg(s, rd);
- store_cpu_field(tmp, vfp.xregs[rn]);
- break;
- default:
- return 1;
- }
- } else {
- tmp = load_reg(s, rd);
- gen_vfp_msr(tmp);
- gen_mov_vreg_F0(0, rn);
- }
- }
- }
- } else {
- /* data processing */
- bool rd_is_dp = dp;
- bool rm_is_dp = dp;
- bool no_output = false;
-
- /* The opcode is in bits 23, 21, 20 and 6. */
- op = ((insn >> 20) & 8) | ((insn >> 19) & 6) | ((insn >> 6) & 1);
- rn = VFP_SREG_N(insn);
-
- if (op == 15) {
- /* rn is opcode, encoded as per VFP_SREG_N. */
- switch (rn) {
- case 0x00: /* vmov */
- case 0x01: /* vabs */
- case 0x02: /* vneg */
- case 0x03: /* vsqrt */
- break;
-
- case 0x04: /* vcvtb.f64.f16, vcvtb.f32.f16 */
- case 0x05: /* vcvtt.f64.f16, vcvtt.f32.f16 */
- /*
- * VCVTB, VCVTT: only present with the halfprec extension
- * UNPREDICTABLE if bit 8 is set prior to ARMv8
- * (we choose to UNDEF)
- */
- if (dp) {
- if (!dc_isar_feature(aa32_fp16_dpconv, s)) {
- return 1;
- }
- } else {
- if (!dc_isar_feature(aa32_fp16_spconv, s)) {
- return 1;
- }
- }
- rm_is_dp = false;
- break;
- case 0x06: /* vcvtb.f16.f32, vcvtb.f16.f64 */
- case 0x07: /* vcvtt.f16.f32, vcvtt.f16.f64 */
- if (dp) {
- if (!dc_isar_feature(aa32_fp16_dpconv, s)) {
- return 1;
- }
- } else {
- if (!dc_isar_feature(aa32_fp16_spconv, s)) {
- return 1;
- }
- }
- rd_is_dp = false;
- break;
-
- case 0x08: case 0x0a: /* vcmp, vcmpz */
- case 0x09: case 0x0b: /* vcmpe, vcmpez */
- no_output = true;
- break;
-
- case 0x0c: /* vrintr */
- case 0x0d: /* vrintz */
- case 0x0e: /* vrintx */
- break;
-
- case 0x0f: /* vcvt double<->single */
- rd_is_dp = !dp;
- break;
-
- case 0x10: /* vcvt.fxx.u32 */
- case 0x11: /* vcvt.fxx.s32 */
- rm_is_dp = false;
- break;
- case 0x18: /* vcvtr.u32.fxx */
- case 0x19: /* vcvtz.u32.fxx */
- case 0x1a: /* vcvtr.s32.fxx */
- case 0x1b: /* vcvtz.s32.fxx */
- rd_is_dp = false;
- break;
-
- case 0x14: /* vcvt fp <-> fixed */
- case 0x15:
- case 0x16:
- case 0x17:
- case 0x1c:
- case 0x1d:
- case 0x1e:
- case 0x1f:
- if (!arm_dc_feature(s, ARM_FEATURE_VFP3)) {
- return 1;
- }
- /* Immediate frac_bits has same format as SREG_M. */
- rm_is_dp = false;
- break;
-
- case 0x13: /* vjcvt */
- if (!dp || !dc_isar_feature(aa32_jscvt, s)) {
- return 1;
- }
- rd_is_dp = false;
- break;
-
- default:
- return 1;
- }
- } else if (dp) {
- /* rn is register number */
- VFP_DREG_N(rn, insn);
- }
-
- if (rd_is_dp) {
- VFP_DREG_D(rd, insn);
- } else {
- rd = VFP_SREG_D(insn);
- }
- if (rm_is_dp) {
- VFP_DREG_M(rm, insn);
- } else {
- rm = VFP_SREG_M(insn);
- }
-
- veclen = s->vec_len;
- if (op == 15 && rn > 3) {
- veclen = 0;
- }
-
- /* Shut up compiler warnings. */
- delta_m = 0;
- delta_d = 0;
- bank_mask = 0;
-
- if (veclen > 0) {
- if (dp)
- bank_mask = 0xc;
- else
- bank_mask = 0x18;
-
- /* Figure out what type of vector operation this is. */
- if ((rd & bank_mask) == 0) {
- /* scalar */
- veclen = 0;
- } else {
- if (dp)
- delta_d = (s->vec_stride >> 1) + 1;
- else
- delta_d = s->vec_stride + 1;
-
- if ((rm & bank_mask) == 0) {
- /* mixed scalar/vector */
- delta_m = 0;
- } else {
- /* vector */
- delta_m = delta_d;
- }
- }
- }
-
- /* Load the initial operands. */
- if (op == 15) {
- switch (rn) {
- case 0x08: case 0x09: /* Compare */
- gen_mov_F0_vreg(dp, rd);
- gen_mov_F1_vreg(dp, rm);
- break;
- case 0x0a: case 0x0b: /* Compare with zero */
- gen_mov_F0_vreg(dp, rd);
- gen_vfp_F1_ld0(dp);
- break;
- case 0x14: /* vcvt fp <-> fixed */
- case 0x15:
- case 0x16:
- case 0x17:
- case 0x1c:
- case 0x1d:
- case 0x1e:
- case 0x1f:
- /* Source and destination the same. */
- gen_mov_F0_vreg(dp, rd);
- break;
- default:
- /* One source operand. */
- gen_mov_F0_vreg(rm_is_dp, rm);
- break;
- }
- } else {
- /* Two source operands. */
- gen_mov_F0_vreg(dp, rn);
- gen_mov_F1_vreg(dp, rm);
- }
-
- for (;;) {
- /* Perform the calculation. */
- switch (op) {
- case 0: /* VMLA: fd + (fn * fm) */
- /* Note that order of inputs to the add matters for NaNs */
- gen_vfp_F1_mul(dp);
- gen_mov_F0_vreg(dp, rd);
- gen_vfp_add(dp);
- break;
- case 1: /* VMLS: fd + -(fn * fm) */
- gen_vfp_mul(dp);
- gen_vfp_F1_neg(dp);
- gen_mov_F0_vreg(dp, rd);
- gen_vfp_add(dp);
- break;
- case 2: /* VNMLS: -fd + (fn * fm) */
- /* Note that it isn't valid to replace (-A + B) with (B - A)
- * or similar plausible looking simplifications
- * because this will give wrong results for NaNs.
- */
- gen_vfp_F1_mul(dp);
- gen_mov_F0_vreg(dp, rd);
- gen_vfp_neg(dp);
- gen_vfp_add(dp);
- break;
- case 3: /* VNMLA: -fd + -(fn * fm) */
- gen_vfp_mul(dp);
- gen_vfp_F1_neg(dp);
- gen_mov_F0_vreg(dp, rd);
- gen_vfp_neg(dp);
- gen_vfp_add(dp);
- break;
- case 4: /* mul: fn * fm */
- gen_vfp_mul(dp);
- break;
- case 5: /* nmul: -(fn * fm) */
- gen_vfp_mul(dp);
- gen_vfp_neg(dp);
- break;
- case 6: /* add: fn + fm */
- gen_vfp_add(dp);
- break;
- case 7: /* sub: fn - fm */
- gen_vfp_sub(dp);
- break;
- case 8: /* div: fn / fm */
- gen_vfp_div(dp);
- break;
- case 10: /* VFNMA : fd = muladd(-fd, fn, fm) */
- case 11: /* VFNMS : fd = muladd(-fd, -fn, fm) */
- case 12: /* VFMA : fd = muladd( fd, fn, fm) */
- case 13: /* VFMS : fd = muladd( fd, -fn, fm) */
- /* These are fused multiply-add, and must be done as one
- * floating point operation with no rounding between the
- * multiplication and addition steps.
- * NB that doing the negations here as separate steps is
- * correct : an input NaN should come out with its sign bit
- * flipped if it is a negated-input.
- */
- if (!arm_dc_feature(s, ARM_FEATURE_VFP4)) {
- return 1;
- }
- if (dp) {
- TCGv_ptr fpst;
- TCGv_i64 frd;
- if (op & 1) {
- /* VFNMS, VFMS */
- gen_helper_vfp_negd(cpu_F0d, cpu_F0d);
- }
- frd = tcg_temp_new_i64();
- tcg_gen_ld_f64(frd, cpu_env, vfp_reg_offset(dp, rd));
- if (op & 2) {
- /* VFNMA, VFNMS */
- gen_helper_vfp_negd(frd, frd);
- }
- fpst = get_fpstatus_ptr(0);
- gen_helper_vfp_muladdd(cpu_F0d, cpu_F0d,
- cpu_F1d, frd, fpst);
- tcg_temp_free_ptr(fpst);
- tcg_temp_free_i64(frd);
- } else {
- TCGv_ptr fpst;
- TCGv_i32 frd;
- if (op & 1) {
- /* VFNMS, VFMS */
- gen_helper_vfp_negs(cpu_F0s, cpu_F0s);
- }
- frd = tcg_temp_new_i32();
- tcg_gen_ld_f32(frd, cpu_env, vfp_reg_offset(dp, rd));
- if (op & 2) {
- gen_helper_vfp_negs(frd, frd);
- }
- fpst = get_fpstatus_ptr(0);
- gen_helper_vfp_muladds(cpu_F0s, cpu_F0s,
- cpu_F1s, frd, fpst);
- tcg_temp_free_ptr(fpst);
- tcg_temp_free_i32(frd);
- }
- break;
- case 14: /* fconst */
- if (!arm_dc_feature(s, ARM_FEATURE_VFP3)) {
- return 1;
- }
-
- n = (insn << 12) & 0x80000000;
- i = ((insn >> 12) & 0x70) | (insn & 0xf);
- if (dp) {
- if (i & 0x40)
- i |= 0x3f80;
- else
- i |= 0x4000;
- n |= i << 16;
- tcg_gen_movi_i64(cpu_F0d, ((uint64_t)n) << 32);
- } else {
- if (i & 0x40)
- i |= 0x780;
- else
- i |= 0x800;
- n |= i << 19;
- tcg_gen_movi_i32(cpu_F0s, n);
- }
- break;
- case 15: /* extension space */
- switch (rn) {
- case 0: /* cpy */
- /* no-op */
- break;
- case 1: /* abs */
- gen_vfp_abs(dp);
- break;
- case 2: /* neg */
- gen_vfp_neg(dp);
- break;
- case 3: /* sqrt */
- gen_vfp_sqrt(dp);
- break;
- case 4: /* vcvtb.f32.f16, vcvtb.f64.f16 */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(false);
- TCGv_i32 ahp_mode = get_ahp_flag();
- tmp = gen_vfp_mrs();
- tcg_gen_ext16u_i32(tmp, tmp);
- if (dp) {
- gen_helper_vfp_fcvt_f16_to_f64(cpu_F0d, tmp,
- fpst, ahp_mode);
- } else {
- gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp,
- fpst, ahp_mode);
- }
- tcg_temp_free_i32(ahp_mode);
- tcg_temp_free_ptr(fpst);
- tcg_temp_free_i32(tmp);
- break;
- }
- case 5: /* vcvtt.f32.f16, vcvtt.f64.f16 */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(false);
- TCGv_i32 ahp = get_ahp_flag();
- tmp = gen_vfp_mrs();
- tcg_gen_shri_i32(tmp, tmp, 16);
- if (dp) {
- gen_helper_vfp_fcvt_f16_to_f64(cpu_F0d, tmp,
- fpst, ahp);
- } else {
- gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp,
- fpst, ahp);
- }
- tcg_temp_free_i32(tmp);
- tcg_temp_free_i32(ahp);
- tcg_temp_free_ptr(fpst);
- break;
- }
- case 6: /* vcvtb.f16.f32, vcvtb.f16.f64 */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(false);
- TCGv_i32 ahp = get_ahp_flag();
- tmp = tcg_temp_new_i32();
-
- if (dp) {
- gen_helper_vfp_fcvt_f64_to_f16(tmp, cpu_F0d,
- fpst, ahp);
- } else {
- gen_helper_vfp_fcvt_f32_to_f16(tmp, cpu_F0s,
- fpst, ahp);
- }
- tcg_temp_free_i32(ahp);
- tcg_temp_free_ptr(fpst);
- gen_mov_F0_vreg(0, rd);
- tmp2 = gen_vfp_mrs();
- tcg_gen_andi_i32(tmp2, tmp2, 0xffff0000);
- tcg_gen_or_i32(tmp, tmp, tmp2);
- tcg_temp_free_i32(tmp2);
- gen_vfp_msr(tmp);
- break;
- }
- case 7: /* vcvtt.f16.f32, vcvtt.f16.f64 */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(false);
- TCGv_i32 ahp = get_ahp_flag();
- tmp = tcg_temp_new_i32();
- if (dp) {
- gen_helper_vfp_fcvt_f64_to_f16(tmp, cpu_F0d,
- fpst, ahp);
- } else {
- gen_helper_vfp_fcvt_f32_to_f16(tmp, cpu_F0s,
- fpst, ahp);
- }
- tcg_temp_free_i32(ahp);
- tcg_temp_free_ptr(fpst);
- tcg_gen_shli_i32(tmp, tmp, 16);
- gen_mov_F0_vreg(0, rd);
- tmp2 = gen_vfp_mrs();
- tcg_gen_ext16u_i32(tmp2, tmp2);
- tcg_gen_or_i32(tmp, tmp, tmp2);
- tcg_temp_free_i32(tmp2);
- gen_vfp_msr(tmp);
- break;
- }
- case 8: /* cmp */
- gen_vfp_cmp(dp);
- break;
- case 9: /* cmpe */
- gen_vfp_cmpe(dp);
- break;
- case 10: /* cmpz */
- gen_vfp_cmp(dp);
- break;
- case 11: /* cmpez */
- gen_vfp_F1_ld0(dp);
- gen_vfp_cmpe(dp);
- break;
- case 12: /* vrintr */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(0);
- if (dp) {
- gen_helper_rintd(cpu_F0d, cpu_F0d, fpst);
- } else {
- gen_helper_rints(cpu_F0s, cpu_F0s, fpst);
- }
- tcg_temp_free_ptr(fpst);
- break;
- }
- case 13: /* vrintz */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(0);
- TCGv_i32 tcg_rmode;
- tcg_rmode = tcg_const_i32(float_round_to_zero);
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- if (dp) {
- gen_helper_rintd(cpu_F0d, cpu_F0d, fpst);
- } else {
- gen_helper_rints(cpu_F0s, cpu_F0s, fpst);
- }
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- tcg_temp_free_i32(tcg_rmode);
- tcg_temp_free_ptr(fpst);
- break;
- }
- case 14: /* vrintx */
- {
- TCGv_ptr fpst = get_fpstatus_ptr(0);
- if (dp) {
- gen_helper_rintd_exact(cpu_F0d, cpu_F0d, fpst);
- } else {
- gen_helper_rints_exact(cpu_F0s, cpu_F0s, fpst);
- }
- tcg_temp_free_ptr(fpst);
- break;
- }
- case 15: /* single<->double conversion */
- if (dp) {
- gen_helper_vfp_fcvtsd(cpu_F0s, cpu_F0d, cpu_env);
- } else {
- gen_helper_vfp_fcvtds(cpu_F0d, cpu_F0s, cpu_env);
- }
- break;
- case 16: /* fuito */
- gen_vfp_uito(dp, 0);
- break;
- case 17: /* fsito */
- gen_vfp_sito(dp, 0);
- break;
- case 19: /* vjcvt */
- gen_helper_vjcvt(cpu_F0s, cpu_F0d, cpu_env);
- break;
- case 20: /* fshto */
- gen_vfp_shto(dp, 16 - rm, 0);
- break;
- case 21: /* fslto */
- gen_vfp_slto(dp, 32 - rm, 0);
- break;
- case 22: /* fuhto */
- gen_vfp_uhto(dp, 16 - rm, 0);
- break;
- case 23: /* fulto */
- gen_vfp_ulto(dp, 32 - rm, 0);
- break;
- case 24: /* ftoui */
- gen_vfp_toui(dp, 0);
- break;
- case 25: /* ftouiz */
- gen_vfp_touiz(dp, 0);
- break;
- case 26: /* ftosi */
- gen_vfp_tosi(dp, 0);
- break;
- case 27: /* ftosiz */
- gen_vfp_tosiz(dp, 0);
- break;
- case 28: /* ftosh */
- gen_vfp_tosh(dp, 16 - rm, 0);
- break;
- case 29: /* ftosl */
- gen_vfp_tosl(dp, 32 - rm, 0);
- break;
- case 30: /* ftouh */
- gen_vfp_touh(dp, 16 - rm, 0);
- break;
- case 31: /* ftoul */
- gen_vfp_toul(dp, 32 - rm, 0);
- break;
- default: /* undefined */
- g_assert_not_reached();
- }
- break;
- default: /* undefined */
- return 1;
- }
-
- /* Write back the result, if any. */
- if (!no_output) {
- gen_mov_vreg_F0(rd_is_dp, rd);
- }
-
- /* break out of the loop if we have finished */
- if (veclen == 0) {
- break;
- }
-
- if (op == 15 && delta_m == 0) {
- /* single source one-many */
- while (veclen--) {
- rd = ((rd + delta_d) & (bank_mask - 1))
- | (rd & bank_mask);
- gen_mov_vreg_F0(dp, rd);
- }
- break;
- }
- /* Setup the next operands. */
- veclen--;
- rd = ((rd + delta_d) & (bank_mask - 1))
- | (rd & bank_mask);
-
- if (op == 15) {
- /* One source operand. */
- rm = ((rm + delta_m) & (bank_mask - 1))
- | (rm & bank_mask);
- gen_mov_F0_vreg(dp, rm);
- } else {
- /* Two source operands. */
- rn = ((rn + delta_d) & (bank_mask - 1))
- | (rn & bank_mask);
- gen_mov_F0_vreg(dp, rn);
- if (delta_m) {
- rm = ((rm + delta_m) & (bank_mask - 1))
- | (rm & bank_mask);
- gen_mov_F1_vreg(dp, rm);
- }
- }
- }
+ if (disas_vfp_uncond(s, insn)) {
+ return 0;
}
- break;
- case 0xc:
- case 0xd:
- if ((insn & 0x03e00000) == 0x00400000) {
- /* two-register transfer */
- rn = (insn >> 16) & 0xf;
- rd = (insn >> 12) & 0xf;
- if (dp) {
- VFP_DREG_M(rm, insn);
- } else {
- rm = VFP_SREG_M(insn);
- }
-
- if (insn & ARM_CP_RW_BIT) {
- /* vfp->arm */
- if (dp) {
- gen_mov_F0_vreg(0, rm * 2);
- tmp = gen_vfp_mrs();
- store_reg(s, rd, tmp);
- gen_mov_F0_vreg(0, rm * 2 + 1);
- tmp = gen_vfp_mrs();
- store_reg(s, rn, tmp);
- } else {
- gen_mov_F0_vreg(0, rm);
- tmp = gen_vfp_mrs();
- store_reg(s, rd, tmp);
- gen_mov_F0_vreg(0, rm + 1);
- tmp = gen_vfp_mrs();
- store_reg(s, rn, tmp);
- }
- } else {
- /* arm->vfp */
- if (dp) {
- tmp = load_reg(s, rd);
- gen_vfp_msr(tmp);
- gen_mov_vreg_F0(0, rm * 2);
- tmp = load_reg(s, rn);
- gen_vfp_msr(tmp);
- gen_mov_vreg_F0(0, rm * 2 + 1);
- } else {
- tmp = load_reg(s, rd);
- gen_vfp_msr(tmp);
- gen_mov_vreg_F0(0, rm);
- tmp = load_reg(s, rn);
- gen_vfp_msr(tmp);
- gen_mov_vreg_F0(0, rm + 1);
- }
- }
- } else {
- /* Load/store */
- rn = (insn >> 16) & 0xf;
- if (dp)
- VFP_DREG_D(rd, insn);
- else
- rd = VFP_SREG_D(insn);
- if ((insn & 0x01200000) == 0x01000000) {
- /* Single load/store */
- offset = (insn & 0xff) << 2;
- if ((insn & (1 << 23)) == 0)
- offset = -offset;
- if (s->thumb && rn == 15) {
- /* This is actually UNPREDICTABLE */
- addr = tcg_temp_new_i32();
- tcg_gen_movi_i32(addr, s->pc & ~2);
- } else {
- addr = load_reg(s, rn);
- }
- tcg_gen_addi_i32(addr, addr, offset);
- if (insn & (1 << 20)) {
- gen_vfp_ld(s, dp, addr);
- gen_mov_vreg_F0(dp, rd);
- } else {
- gen_mov_F0_vreg(dp, rd);
- gen_vfp_st(s, dp, addr);
- }
- tcg_temp_free_i32(addr);
- } else {
- /* load/store multiple */
- int w = insn & (1 << 21);
- if (dp)
- n = (insn >> 1) & 0x7f;
- else
- n = insn & 0xff;
-
- if (w && !(((insn >> 23) ^ (insn >> 24)) & 1)) {
- /* P == U , W == 1 => UNDEF */
- return 1;
- }
- if (n == 0 || (rd + n) > 32 || (dp && n > 16)) {
- /* UNPREDICTABLE cases for bad immediates: we choose to
- * UNDEF to avoid generating huge numbers of TCG ops
- */
- return 1;
- }
- if (rn == 15 && w) {
- /* writeback to PC is UNPREDICTABLE, we choose to UNDEF */
- return 1;
- }
-
- if (s->thumb && rn == 15) {
- /* This is actually UNPREDICTABLE */
- addr = tcg_temp_new_i32();
- tcg_gen_movi_i32(addr, s->pc & ~2);
- } else {
- addr = load_reg(s, rn);
- }
- if (insn & (1 << 24)) /* pre-decrement */
- tcg_gen_addi_i32(addr, addr, -((insn & 0xff) << 2));
-
- if (s->v8m_stackcheck && rn == 13 && w) {
- /*
- * Here 'addr' is the lowest address we will store to,
- * and is either the old SP (if post-increment) or
- * the new SP (if pre-decrement). For post-increment
- * where the old value is below the limit and the new
- * value is above, it is UNKNOWN whether the limit check
- * triggers; we choose to trigger.
- */
- gen_helper_v8m_stackcheck(cpu_env, addr);
- }
-
- if (dp)
- offset = 8;
- else
- offset = 4;
- for (i = 0; i < n; i++) {
- if (insn & ARM_CP_RW_BIT) {
- /* load */
- gen_vfp_ld(s, dp, addr);
- gen_mov_vreg_F0(dp, rd + i);
- } else {
- /* store */
- gen_mov_F0_vreg(dp, rd + i);
- gen_vfp_st(s, dp, addr);
- }
- tcg_gen_addi_i32(addr, addr, offset);
- }
- if (w) {
- /* writeback */
- if (insn & (1 << 24))
- offset = -offset * n;
- else if (dp && (insn & 1))
- offset = 4;
- else
- offset = 0;
-
- if (offset != 0)
- tcg_gen_addi_i32(addr, addr, offset);
- store_reg(s, rn, addr);
- } else {
- tcg_temp_free_i32(addr);
- }
- }
+ } else {
+ if (disas_vfp(s, insn)) {
+ return 0;
}
- break;
- default:
- /* Should never happen. */
- return 1;
}
- return 0;
+ /* If the decodetree decoder didn't handle this insn, it must be UNDEF */
+ return 1;
}
static inline bool use_goto_tb(DisasContext *s, target_ulong dest)
@@ -5755,72 +4308,6 @@ static int do_v81_helper(DisasContext *s, gen_helper_gvec_3_ptr *fn,
return 1;
}
-/*
- * Expanders for VBitOps_VBIF, VBIT, VBSL.
- */
-static void gen_bsl_i64(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
-{
- tcg_gen_xor_i64(rn, rn, rm);
- tcg_gen_and_i64(rn, rn, rd);
- tcg_gen_xor_i64(rd, rm, rn);
-}
-
-static void gen_bit_i64(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
-{
- tcg_gen_xor_i64(rn, rn, rd);
- tcg_gen_and_i64(rn, rn, rm);
- tcg_gen_xor_i64(rd, rd, rn);
-}
-
-static void gen_bif_i64(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
-{
- tcg_gen_xor_i64(rn, rn, rd);
- tcg_gen_andc_i64(rn, rn, rm);
- tcg_gen_xor_i64(rd, rd, rn);
-}
-
-static void gen_bsl_vec(unsigned vece, TCGv_vec rd, TCGv_vec rn, TCGv_vec rm)
-{
- tcg_gen_xor_vec(vece, rn, rn, rm);
- tcg_gen_and_vec(vece, rn, rn, rd);
- tcg_gen_xor_vec(vece, rd, rm, rn);
-}
-
-static void gen_bit_vec(unsigned vece, TCGv_vec rd, TCGv_vec rn, TCGv_vec rm)
-{
- tcg_gen_xor_vec(vece, rn, rn, rd);
- tcg_gen_and_vec(vece, rn, rn, rm);
- tcg_gen_xor_vec(vece, rd, rd, rn);
-}
-
-static void gen_bif_vec(unsigned vece, TCGv_vec rd, TCGv_vec rn, TCGv_vec rm)
-{
- tcg_gen_xor_vec(vece, rn, rn, rd);
- tcg_gen_andc_vec(vece, rn, rn, rm);
- tcg_gen_xor_vec(vece, rd, rd, rn);
-}
-
-const GVecGen3 bsl_op = {
- .fni8 = gen_bsl_i64,
- .fniv = gen_bsl_vec,
- .prefer_i64 = TCG_TARGET_REG_BITS == 64,
- .load_dest = true
-};
-
-const GVecGen3 bit_op = {
- .fni8 = gen_bit_i64,
- .fniv = gen_bit_vec,
- .prefer_i64 = TCG_TARGET_REG_BITS == 64,
- .load_dest = true
-};
-
-const GVecGen3 bif_op = {
- .fni8 = gen_bif_i64,
- .fniv = gen_bif_vec,
- .prefer_i64 = TCG_TARGET_REG_BITS == 64,
- .load_dest = true
-};
-
static void gen_ssra8_i64(TCGv_i64 d, TCGv_i64 a, int64_t shift)
{
tcg_gen_vec_sar8i_i64(a, a, shift);
@@ -6570,16 +5057,16 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
vec_size, vec_size);
break;
case 5: /* VBSL */
- tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
- vec_size, vec_size, &bsl_op);
+ tcg_gen_gvec_bitsel(MO_8, rd_ofs, rd_ofs, rn_ofs, rm_ofs,
+ vec_size, vec_size);
break;
case 6: /* VBIT */
- tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
- vec_size, vec_size, &bit_op);
+ tcg_gen_gvec_bitsel(MO_8, rd_ofs, rm_ofs, rn_ofs, rd_ofs,
+ vec_size, vec_size);
break;
case 7: /* VBIF */
- tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
- vec_size, vec_size, &bif_op);
+ tcg_gen_gvec_bitsel(MO_8, rd_ofs, rm_ofs, rd_ofs, rn_ofs,
+ vec_size, vec_size);
break;
}
return 0;
diff --git a/target/arm/translate.h b/target/arm/translate.h
index c2348de..dc06dce 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -238,9 +238,6 @@ static inline void gen_ss_advance(DisasContext *s)
}
/* Vector operations shared between ARM and AArch64. */
-extern const GVecGen3 bsl_op;
-extern const GVecGen3 bit_op;
-extern const GVecGen3 bif_op;
extern const GVecGen3 mla_op[4];
extern const GVecGen3 mls_op[4];
extern const GVecGen3 cmtst_op[4];
diff --git a/target/arm/vfp-uncond.decode b/target/arm/vfp-uncond.decode
new file mode 100644
index 0000000..5af1f2e
--- /dev/null
+++ b/target/arm/vfp-uncond.decode
@@ -0,0 +1,63 @@
+# AArch32 VFP instruction descriptions (unconditional insns)
+#
+# Copyright (c) 2019 Linaro, Ltd
+#
+# 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/>.
+
+#
+# This file is processed by scripts/decodetree.py
+#
+# Encodings for the unconditional VFP instructions are here:
+# generally anything matching A32
+# 1111 1110 .... .... .... 101. ...0 ....
+# and T32
+# 1111 110. .... .... .... 101. .... ....
+# 1111 1110 .... .... .... 101. .... ....
+# (but those patterns might also cover some Neon instructions,
+# which do not live in this file.)
+
+# VFP registers have an odd encoding with a four-bit field
+# and a one-bit field which are assembled in different orders
+# depending on whether the register is double or single precision.
+# Each individual instruction function must do the checks for
+# "double register selected but CPU does not have double support"
+# and "double register number has bit 4 set but CPU does not
+# support D16-D31" (which should UNDEF).
+%vm_dp 5:1 0:4
+%vm_sp 0:4 5:1
+%vn_dp 7:1 16:4
+%vn_sp 16:4 7:1
+%vd_dp 22:1 12:4
+%vd_sp 12:4 22:1
+
+VSEL 1111 1110 0. cc:2 .... .... 1010 .0.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp dp=0
+VSEL 1111 1110 0. cc:2 .... .... 1011 .0.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp dp=1
+
+VMINMAXNM 1111 1110 1.00 .... .... 1010 . op:1 .0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp dp=0
+VMINMAXNM 1111 1110 1.00 .... .... 1011 . op:1 .0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp dp=1
+
+VRINT 1111 1110 1.11 10 rm:2 .... 1010 01.0 .... \
+ vm=%vm_sp vd=%vd_sp dp=0
+VRINT 1111 1110 1.11 10 rm:2 .... 1011 01.0 .... \
+ vm=%vm_dp vd=%vd_dp dp=1
+
+# VCVT float to int with specified rounding mode; Vd is always single-precision
+VCVT 1111 1110 1.11 11 rm:2 .... 1010 op:1 1.0 .... \
+ vm=%vm_sp vd=%vd_sp dp=0
+VCVT 1111 1110 1.11 11 rm:2 .... 1011 op:1 1.0 .... \
+ vm=%vm_dp vd=%vd_sp dp=1
diff --git a/target/arm/vfp.decode b/target/arm/vfp.decode
new file mode 100644
index 0000000..ea24365
--- /dev/null
+++ b/target/arm/vfp.decode
@@ -0,0 +1,242 @@
+# AArch32 VFP instruction descriptions (conditional insns)
+#
+# Copyright (c) 2019 Linaro, Ltd
+#
+# 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/>.
+
+#
+# This file is processed by scripts/decodetree.py
+#
+# Encodings for the conditional VFP instructions are here:
+# generally anything matching A32
+# cccc 11.. .... .... .... 101. .... ....
+# and T32
+# 1110 110. .... .... .... 101. .... ....
+# 1110 1110 .... .... .... 101. .... ....
+# (but those patterns might also cover some Neon instructions,
+# which do not live in this file.)
+
+# VFP registers have an odd encoding with a four-bit field
+# and a one-bit field which are assembled in different orders
+# depending on whether the register is double or single precision.
+# Each individual instruction function must do the checks for
+# "double register selected but CPU does not have double support"
+# and "double register number has bit 4 set but CPU does not
+# support D16-D31" (which should UNDEF).
+%vm_dp 5:1 0:4
+%vm_sp 0:4 5:1
+%vn_dp 7:1 16:4
+%vn_sp 16:4 7:1
+%vd_dp 22:1 12:4
+%vd_sp 12:4 22:1
+
+%vmov_idx_b 21:1 5:2
+%vmov_idx_h 21:1 6:1
+
+# VMOV scalar to general-purpose register; note that this does
+# include some Neon cases.
+VMOV_to_gp ---- 1110 u:1 1. 1 .... rt:4 1011 ... 1 0000 \
+ vn=%vn_dp size=0 index=%vmov_idx_b
+VMOV_to_gp ---- 1110 u:1 0. 1 .... rt:4 1011 ..1 1 0000 \
+ vn=%vn_dp size=1 index=%vmov_idx_h
+VMOV_to_gp ---- 1110 0 0 index:1 1 .... rt:4 1011 .00 1 0000 \
+ vn=%vn_dp size=2 u=0
+
+VMOV_from_gp ---- 1110 0 1. 0 .... rt:4 1011 ... 1 0000 \
+ vn=%vn_dp size=0 index=%vmov_idx_b
+VMOV_from_gp ---- 1110 0 0. 0 .... rt:4 1011 ..1 1 0000 \
+ vn=%vn_dp size=1 index=%vmov_idx_h
+VMOV_from_gp ---- 1110 0 0 index:1 0 .... rt:4 1011 .00 1 0000 \
+ vn=%vn_dp size=2
+
+VDUP ---- 1110 1 b:1 q:1 0 .... rt:4 1011 . 0 e:1 1 0000 \
+ vn=%vn_dp
+
+VMSR_VMRS ---- 1110 111 l:1 reg:4 rt:4 1010 0001 0000
+VMOV_single ---- 1110 000 l:1 .... rt:4 1010 . 001 0000 \
+ vn=%vn_sp
+
+VMOV_64_sp ---- 1100 010 op:1 rt2:4 rt:4 1010 00.1 .... \
+ vm=%vm_sp
+VMOV_64_dp ---- 1100 010 op:1 rt2:4 rt:4 1011 00.1 .... \
+ vm=%vm_dp
+
+# Note that the half-precision variants of VLDR and VSTR are
+# not part of this decodetree at all because they have bits [9:8] == 0b01
+VLDR_VSTR_sp ---- 1101 u:1 .0 l:1 rn:4 .... 1010 imm:8 \
+ vd=%vd_sp
+VLDR_VSTR_dp ---- 1101 u:1 .0 l:1 rn:4 .... 1011 imm:8 \
+ vd=%vd_dp
+
+# We split the load/store multiple up into two patterns to avoid
+# overlap with other insns in the "Advanced SIMD load/store and 64-bit move"
+# grouping:
+# P=0 U=0 W=0 is 64-bit VMOV
+# P=1 W=0 is VLDR/VSTR
+# P=U W=1 is UNDEF
+# leaving P=0 U=1 W=x and P=1 U=0 W=1 for load/store multiple.
+# These include FSTM/FLDM.
+VLDM_VSTM_sp ---- 1100 1 . w:1 l:1 rn:4 .... 1010 imm:8 \
+ vd=%vd_sp p=0 u=1
+VLDM_VSTM_dp ---- 1100 1 . w:1 l:1 rn:4 .... 1011 imm:8 \
+ vd=%vd_dp p=0 u=1
+
+VLDM_VSTM_sp ---- 1101 0.1 l:1 rn:4 .... 1010 imm:8 \
+ vd=%vd_sp p=1 u=0 w=1
+VLDM_VSTM_dp ---- 1101 0.1 l:1 rn:4 .... 1011 imm:8 \
+ vd=%vd_dp p=1 u=0 w=1
+
+# 3-register VFP data-processing; bits [23,21:20,6] identify the operation.
+VMLA_sp ---- 1110 0.00 .... .... 1010 .0.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VMLA_dp ---- 1110 0.00 .... .... 1011 .0.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VMLS_sp ---- 1110 0.00 .... .... 1010 .1.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VMLS_dp ---- 1110 0.00 .... .... 1011 .1.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VNMLS_sp ---- 1110 0.01 .... .... 1010 .0.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VNMLS_dp ---- 1110 0.01 .... .... 1011 .0.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VNMLA_sp ---- 1110 0.01 .... .... 1010 .1.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VNMLA_dp ---- 1110 0.01 .... .... 1011 .1.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VMUL_sp ---- 1110 0.10 .... .... 1010 .0.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VMUL_dp ---- 1110 0.10 .... .... 1011 .0.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VNMUL_sp ---- 1110 0.10 .... .... 1010 .1.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VNMUL_dp ---- 1110 0.10 .... .... 1011 .1.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VADD_sp ---- 1110 0.11 .... .... 1010 .0.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VADD_dp ---- 1110 0.11 .... .... 1011 .0.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VSUB_sp ---- 1110 0.11 .... .... 1010 .1.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VSUB_dp ---- 1110 0.11 .... .... 1011 .1.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VDIV_sp ---- 1110 1.00 .... .... 1010 .0.0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp
+VDIV_dp ---- 1110 1.00 .... .... 1011 .0.0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+VFM_sp ---- 1110 1.01 .... .... 1010 . o2:1 . 0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp o1=1
+VFM_dp ---- 1110 1.01 .... .... 1011 . o2:1 . 0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp o1=1
+VFM_sp ---- 1110 1.10 .... .... 1010 . o2:1 . 0 .... \
+ vm=%vm_sp vn=%vn_sp vd=%vd_sp o1=2
+VFM_dp ---- 1110 1.10 .... .... 1011 . o2:1 . 0 .... \
+ vm=%vm_dp vn=%vn_dp vd=%vd_dp o1=2
+
+VMOV_imm_sp ---- 1110 1.11 imm4h:4 .... 1010 0000 imm4l:4 \
+ vd=%vd_sp
+VMOV_imm_dp ---- 1110 1.11 imm4h:4 .... 1011 0000 imm4l:4 \
+ vd=%vd_dp
+
+VMOV_reg_sp ---- 1110 1.11 0000 .... 1010 01.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VMOV_reg_dp ---- 1110 1.11 0000 .... 1011 01.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+VABS_sp ---- 1110 1.11 0000 .... 1010 11.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VABS_dp ---- 1110 1.11 0000 .... 1011 11.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+VNEG_sp ---- 1110 1.11 0001 .... 1010 01.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VNEG_dp ---- 1110 1.11 0001 .... 1011 01.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+VSQRT_sp ---- 1110 1.11 0001 .... 1010 11.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VSQRT_dp ---- 1110 1.11 0001 .... 1011 11.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+VCMP_sp ---- 1110 1.11 010 z:1 .... 1010 e:1 1.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VCMP_dp ---- 1110 1.11 010 z:1 .... 1011 e:1 1.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+# VCVTT and VCVTB from f16: Vd format depends on size bit; Vm is always vm_sp
+VCVT_f32_f16 ---- 1110 1.11 0010 .... 1010 t:1 1.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VCVT_f64_f16 ---- 1110 1.11 0010 .... 1011 t:1 1.0 .... \
+ vd=%vd_dp vm=%vm_sp
+
+# VCVTB and VCVTT to f16: Vd format is always vd_sp; Vm format depends on size bit
+VCVT_f16_f32 ---- 1110 1.11 0011 .... 1010 t:1 1.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VCVT_f16_f64 ---- 1110 1.11 0011 .... 1011 t:1 1.0 .... \
+ vd=%vd_sp vm=%vm_dp
+
+VRINTR_sp ---- 1110 1.11 0110 .... 1010 01.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VRINTR_dp ---- 1110 1.11 0110 .... 1011 01.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+VRINTZ_sp ---- 1110 1.11 0110 .... 1010 11.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VRINTZ_dp ---- 1110 1.11 0110 .... 1011 11.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+VRINTX_sp ---- 1110 1.11 0111 .... 1010 01.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VRINTX_dp ---- 1110 1.11 0111 .... 1011 01.0 .... \
+ vd=%vd_dp vm=%vm_dp
+
+# VCVT between single and double: Vm precision depends on size; Vd is its reverse
+VCVT_sp ---- 1110 1.11 0111 .... 1010 11.0 .... \
+ vd=%vd_dp vm=%vm_sp
+VCVT_dp ---- 1110 1.11 0111 .... 1011 11.0 .... \
+ vd=%vd_sp vm=%vm_dp
+
+# VCVT from integer to floating point: Vm always single; Vd depends on size
+VCVT_int_sp ---- 1110 1.11 1000 .... 1010 s:1 1.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VCVT_int_dp ---- 1110 1.11 1000 .... 1011 s:1 1.0 .... \
+ vd=%vd_dp vm=%vm_sp
+
+# VJCVT is always dp to sp
+VJCVT ---- 1110 1.11 1001 .... 1011 11.0 .... \
+ vd=%vd_sp vm=%vm_dp
+
+# VCVT between floating-point and fixed-point. The immediate value
+# is in the same format as a Vm single-precision register number.
+# We assemble bits 18 (op), 16 (u) and 7 (sx) into a single opc field
+# for the convenience of the trans_VCVT_fix functions.
+%vcvt_fix_op 18:1 16:1 7:1
+VCVT_fix_sp ---- 1110 1.11 1.1. .... 1010 .1.0 .... \
+ vd=%vd_sp imm=%vm_sp opc=%vcvt_fix_op
+VCVT_fix_dp ---- 1110 1.11 1.1. .... 1011 .1.0 .... \
+ vd=%vd_dp imm=%vm_sp opc=%vcvt_fix_op
+
+# VCVT float to integer (VCVT and VCVTR): Vd always single; Vd depends on size
+VCVT_sp_int ---- 1110 1.11 110 s:1 .... 1010 rz:1 1.0 .... \
+ vd=%vd_sp vm=%vm_sp
+VCVT_dp_int ---- 1110 1.11 110 s:1 .... 1011 rz:1 1.0 .... \
+ vd=%vd_sp vm=%vm_dp