target/loongarch: Add fixed point extra instruction translation

This includes:
- CRC[C].W.{B/H/W/D}.W
- SYSCALL
- BREAK
- ASRT{LE/GT}.D
- RDTIME{L/H}.W, RDTIME.D
- CPUCFG

Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-10-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
index bd2db783c9..18e565ce7f 100644
--- a/target/loongarch/op_helper.c
+++ b/target/loongarch/op_helper.c
@@ -13,6 +13,8 @@
 #include "exec/exec-all.h"
 #include "exec/cpu_ldst.h"
 #include "internals.h"
+#include "qemu/crc32c.h"
+#include <zlib.h>
 
 /* Exceptions helpers */
 void helper_raise_exception(CPULoongArchState *env, uint32_t exception)
@@ -55,3 +57,27 @@ void helper_asrtgt_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
         do_raise_exception(env, EXCCODE_ADEM, GETPC());
     }
 }
+
+target_ulong helper_crc32(target_ulong val, target_ulong m, uint64_t sz)
+{
+    uint8_t buf[8];
+    target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
+
+    m &= mask;
+    stq_le_p(buf, m);
+    return (int32_t) (crc32(val ^ 0xffffffff, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_crc32c(target_ulong val, target_ulong m, uint64_t sz)
+{
+    uint8_t buf[8];
+    target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
+    m &= mask;
+    stq_le_p(buf, m);
+    return (int32_t) (crc32c(val, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_cpucfg(CPULoongArchState *env, target_ulong rj)
+{
+    return rj > 21 ? 0 : env->cpucfg[rj];
+}