Move target-* CPU file into a target/ folder

We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/target/i386/mpx_helper.c b/target/i386/mpx_helper.c
new file mode 100644
index 0000000000..7e44820659
--- /dev/null
+++ b/target/i386/mpx_helper.c
@@ -0,0 +1,168 @@
+/*
+ *  x86 MPX helpers
+ *
+ *  Copyright (c) 2015 Red Hat, Inc.
+ *
+ * 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/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/cpu_ldst.h"
+#include "exec/exec-all.h"
+
+
+void cpu_sync_bndcs_hflags(CPUX86State *env)
+{
+    uint32_t hflags = env->hflags;
+    uint32_t hflags2 = env->hflags2;
+    uint32_t bndcsr;
+
+    if ((hflags & HF_CPL_MASK) == 3) {
+        bndcsr = env->bndcs_regs.cfgu;
+    } else {
+        bndcsr = env->msr_bndcfgs;
+    }
+
+    if ((env->cr[4] & CR4_OSXSAVE_MASK)
+        && (env->xcr0 & XSTATE_BNDCSR_MASK)
+        && (bndcsr & BNDCFG_ENABLE)) {
+        hflags |= HF_MPX_EN_MASK;
+    } else {
+        hflags &= ~HF_MPX_EN_MASK;
+    }
+
+    if (bndcsr & BNDCFG_BNDPRESERVE) {
+        hflags2 |= HF2_MPX_PR_MASK;
+    } else {
+        hflags2 &= ~HF2_MPX_PR_MASK;
+    }
+
+    env->hflags = hflags;
+    env->hflags2 = hflags2;
+}
+
+void helper_bndck(CPUX86State *env, uint32_t fail)
+{
+    if (unlikely(fail)) {
+        env->bndcs_regs.sts = 1;
+        raise_exception_ra(env, EXCP05_BOUND, GETPC());
+    }
+}
+
+static uint64_t lookup_bte64(CPUX86State *env, uint64_t base, uintptr_t ra)
+{
+    uint64_t bndcsr, bde, bt;
+
+    if ((env->hflags & HF_CPL_MASK) == 3) {
+        bndcsr = env->bndcs_regs.cfgu;
+    } else {
+        bndcsr = env->msr_bndcfgs;
+    }
+
+    bde = (extract64(base, 20, 28) << 3) + (extract64(bndcsr, 20, 44) << 12);
+    bt = cpu_ldq_data_ra(env, bde, ra);
+    if ((bt & 1) == 0) {
+        env->bndcs_regs.sts = bde | 2;
+        raise_exception_ra(env, EXCP05_BOUND, ra);
+    }
+
+    return (extract64(base, 3, 17) << 5) + (bt & ~7);
+}
+
+static uint32_t lookup_bte32(CPUX86State *env, uint32_t base, uintptr_t ra)
+{
+    uint32_t bndcsr, bde, bt;
+
+    if ((env->hflags & HF_CPL_MASK) == 3) {
+        bndcsr = env->bndcs_regs.cfgu;
+    } else {
+        bndcsr = env->msr_bndcfgs;
+    }
+
+    bde = (extract32(base, 12, 20) << 2) + (bndcsr & TARGET_PAGE_MASK);
+    bt = cpu_ldl_data_ra(env, bde, ra);
+    if ((bt & 1) == 0) {
+        env->bndcs_regs.sts = bde | 2;
+        raise_exception_ra(env, EXCP05_BOUND, ra);
+    }
+
+    return (extract32(base, 2, 10) << 4) + (bt & ~3);
+}
+
+uint64_t helper_bndldx64(CPUX86State *env, target_ulong base, target_ulong ptr)
+{
+    uintptr_t ra = GETPC();
+    uint64_t bte, lb, ub, pt;
+
+    bte = lookup_bte64(env, base, ra);
+    lb = cpu_ldq_data_ra(env, bte, ra);
+    ub = cpu_ldq_data_ra(env, bte + 8, ra);
+    pt = cpu_ldq_data_ra(env, bte + 16, ra);
+
+    if (pt != ptr) {
+        lb = ub = 0;
+    }
+    env->mmx_t0.MMX_Q(0) = ub;
+    return lb;
+}
+
+uint64_t helper_bndldx32(CPUX86State *env, target_ulong base, target_ulong ptr)
+{
+    uintptr_t ra = GETPC();
+    uint32_t bte, lb, ub, pt;
+
+    bte = lookup_bte32(env, base, ra);
+    lb = cpu_ldl_data_ra(env, bte, ra);
+    ub = cpu_ldl_data_ra(env, bte + 4, ra);
+    pt = cpu_ldl_data_ra(env, bte + 8, ra);
+
+    if (pt != ptr) {
+        lb = ub = 0;
+    }
+    return ((uint64_t)ub << 32) | lb;
+}
+
+void helper_bndstx64(CPUX86State *env, target_ulong base, target_ulong ptr,
+                     uint64_t lb, uint64_t ub)
+{
+    uintptr_t ra = GETPC();
+    uint64_t bte;
+
+    bte = lookup_bte64(env, base, ra);
+    cpu_stq_data_ra(env, bte, lb, ra);
+    cpu_stq_data_ra(env, bte + 8, ub, ra);
+    cpu_stq_data_ra(env, bte + 16, ptr, ra);
+}
+
+void helper_bndstx32(CPUX86State *env, target_ulong base, target_ulong ptr,
+                     uint64_t lb, uint64_t ub)
+{
+    uintptr_t ra = GETPC();
+    uint32_t bte;
+
+    bte = lookup_bte32(env, base, ra);
+    cpu_stl_data_ra(env, bte, lb, ra);
+    cpu_stl_data_ra(env, bte + 4, ub, ra);
+    cpu_stl_data_ra(env, bte + 8, ptr, ra);
+}
+
+void helper_bnd_jmp(CPUX86State *env)
+{
+    if (!(env->hflags2 & HF2_MPX_PR_MASK)) {
+        memset(env->bnd_regs, 0, sizeof(env->bnd_regs));
+        env->hflags &= ~HF_MPX_IU_MASK;
+    }
+}