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, 163 insertions, 0 deletions

diff --git a/target/tilegx/helper.c b/target/tilegx/helper.c
new file mode 100644
index 0000000000..b4fba9cc21
--- /dev/null
+++ b/target/tilegx/helper.c
@@ -0,0 +1,163 @@
+/*
+ * QEMU TILE-Gx helpers
+ *
+ *  Copyright (c) 2015 Chen Gang
+ *
+ * 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 2.1 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/lgpl-2.1.html>
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/exec-all.h"
+#include "qemu-common.h"
+#include "exec/helper-proto.h"
+#include <zlib.h> /* For crc32 */
+#include "syscall_defs.h"
+
+void helper_exception(CPUTLGState *env, uint32_t excp)
+{
+    CPUState *cs = CPU(tilegx_env_get_cpu(env));
+
+    cs->exception_index = excp;
+    cpu_loop_exit(cs);
+}
+
+void helper_ext01_ics(CPUTLGState *env)
+{
+    uint64_t val = env->spregs[TILEGX_SPR_EX_CONTEXT_0_1];
+
+    switch (val) {
+    case 0:
+    case 1:
+        env->spregs[TILEGX_SPR_CRITICAL_SEC] = val;
+        break;
+    default:
+#if defined(CONFIG_USER_ONLY)
+        env->signo = TARGET_SIGILL;
+        env->sigcode = TARGET_ILL_ILLOPC;
+        helper_exception(env, TILEGX_EXCP_SIGNAL);
+#else
+        helper_exception(env, TILEGX_EXCP_OPCODE_UNIMPLEMENTED);
+#endif
+        break;
+    }
+}
+
+uint64_t helper_cntlz(uint64_t arg)
+{
+    return clz64(arg);
+}
+
+uint64_t helper_cnttz(uint64_t arg)
+{
+    return ctz64(arg);
+}
+
+uint64_t helper_pcnt(uint64_t arg)
+{
+    return ctpop64(arg);
+}
+
+uint64_t helper_revbits(uint64_t arg)
+{
+    return revbit64(arg);
+}
+
+/*
+ * Functional Description
+ *     uint64_t a = rf[SrcA];
+ *     uint64_t b = rf[SrcB];
+ *     uint64_t d = rf[Dest];
+ *     uint64_t output = 0;
+ *     unsigned int counter;
+ *     for (counter = 0; counter < (WORD_SIZE / BYTE_SIZE); counter++)
+ *     {
+ *         int sel = getByte (b, counter) & 0xf;
+ *         uint8_t byte = (sel < 8) ? getByte (d, sel) : getByte (a, (sel - 8));
+ *         output = setByte (output, counter, byte);
+ *     }
+ *     rf[Dest] = output;
+ */
+uint64_t helper_shufflebytes(uint64_t dest, uint64_t srca, uint64_t srcb)
+{
+    uint64_t vdst = 0;
+    int count;
+
+    for (count = 0; count < 64; count += 8) {
+        uint64_t sel = srcb >> count;
+        uint64_t src = (sel & 8) ? srca : dest;
+        vdst |= extract64(src, (sel & 7) * 8, 8) << count;
+    }
+
+    return vdst;
+}
+
+uint64_t helper_crc32_8(uint64_t accum, uint64_t input)
+{
+    uint8_t buf = input;
+
+    /* zlib crc32 converts the accumulator and output to one's complement.  */
+    return crc32(accum ^ 0xffffffff, &buf, 1) ^ 0xffffffff;
+}
+
+uint64_t helper_crc32_32(uint64_t accum, uint64_t input)
+{
+    uint8_t buf[4];
+
+    stl_le_p(buf, input);
+
+    /* zlib crc32 converts the accumulator and output to one's complement.  */
+    return crc32(accum ^ 0xffffffff, buf, 4) ^ 0xffffffff;
+}
+
+uint64_t helper_cmula(uint64_t srcd, uint64_t srca, uint64_t srcb)
+{
+    uint32_t reala = (int16_t)srca;
+    uint32_t imaga = (int16_t)(srca >> 16);
+    uint32_t realb = (int16_t)srcb;
+    uint32_t imagb = (int16_t)(srcb >> 16);
+    uint32_t reald = srcd;
+    uint32_t imagd = srcd >> 32;
+    uint32_t realr = reala * realb - imaga * imagb + reald;
+    uint32_t imagr = reala * imagb + imaga * realb + imagd;
+
+    return deposit64(realr, 32, 32, imagr);
+}
+
+uint64_t helper_cmulaf(uint64_t srcd, uint64_t srca, uint64_t srcb)
+{
+    uint32_t reala = (int16_t)srca;
+    uint32_t imaga = (int16_t)(srca >> 16);
+    uint32_t realb = (int16_t)srcb;
+    uint32_t imagb = (int16_t)(srcb >> 16);
+    uint32_t reald = (int16_t)srcd;
+    uint32_t imagd = (int16_t)(srcd >> 16);
+    int32_t realr = reala * realb - imaga * imagb;
+    int32_t imagr = reala * imagb + imaga * realb;
+
+    return deposit32((realr >> 15) + reald, 16, 16, (imagr >> 15) + imagd);
+}
+
+uint64_t helper_cmul2(uint64_t srca, uint64_t srcb, int shift, int round)
+{
+    uint32_t reala = (int16_t)srca;
+    uint32_t imaga = (int16_t)(srca >> 16);
+    uint32_t realb = (int16_t)srcb;
+    uint32_t imagb = (int16_t)(srcb >> 16);
+    int32_t realr = reala * realb - imaga * imagb + round;
+    int32_t imagr = reala * imagb + imaga * realb + round;
+
+    return deposit32(realr >> shift, 16, 16, imagr >> shift);
+}