block: Document -drive problematic code and bugs

[mirror_qemu.git] / tcg-runtime.c

diff --git a/tcg-runtime.c b/tcg-runtime.c
index abfc36498f8e82a2a13a64e05516d898eec8e19f..4c60c9665886c94511b9bcc13bc4b22672006f84 100644 (file)
--- a/tcg-runtime.c
+++ b/tcg-runtime.c
@@ -21,65 +21,181 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include <stdint.h>
-
-#include "tcg/tcg-runtime.h"
+#include "qemu/osdep.h"
+#include "qemu/host-utils.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/cpu_ldst.h"
+#include "exec/exec-all.h"
 
 /* 32-bit helpers */
 
-int32_t tcg_helper_div_i32(int32_t arg1, int32_t arg2)
+int32_t HELPER(div_i32)(int32_t arg1, int32_t arg2)
 {
     return arg1 / arg2;
 }
 
-int32_t tcg_helper_rem_i32(int32_t arg1, int32_t arg2)
+int32_t HELPER(rem_i32)(int32_t arg1, int32_t arg2)
 {
     return arg1 % arg2;
 }
 
-uint32_t tcg_helper_divu_i32(uint32_t arg1, uint32_t arg2)
+uint32_t HELPER(divu_i32)(uint32_t arg1, uint32_t arg2)
 {
     return arg1 / arg2;
 }
 
-uint32_t tcg_helper_remu_i32(uint32_t arg1, uint32_t arg2)
+uint32_t HELPER(remu_i32)(uint32_t arg1, uint32_t arg2)
 {
     return arg1 % arg2;
 }
 
 /* 64-bit helpers */
 
-int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2)
+uint64_t HELPER(shl_i64)(uint64_t arg1, uint64_t arg2)
 {
     return arg1 << arg2;
 }
 
-int64_t tcg_helper_shr_i64(int64_t arg1, int64_t arg2)
+uint64_t HELPER(shr_i64)(uint64_t arg1, uint64_t arg2)
 {
-    return (uint64_t)arg1 >> arg2;
+    return arg1 >> arg2;
 }
 
-int64_t tcg_helper_sar_i64(int64_t arg1, int64_t arg2)
+int64_t HELPER(sar_i64)(int64_t arg1, int64_t arg2)
 {
     return arg1 >> arg2;
 }
 
-int64_t tcg_helper_div_i64(int64_t arg1, int64_t arg2)
+int64_t HELPER(div_i64)(int64_t arg1, int64_t arg2)
 {
     return arg1 / arg2;
 }
 
-int64_t tcg_helper_rem_i64(int64_t arg1, int64_t arg2)
+int64_t HELPER(rem_i64)(int64_t arg1, int64_t arg2)
 {
     return arg1 % arg2;
 }
 
-uint64_t tcg_helper_divu_i64(uint64_t arg1, uint64_t arg2)
+uint64_t HELPER(divu_i64)(uint64_t arg1, uint64_t arg2)
 {
     return arg1 / arg2;
 }
 
-uint64_t tcg_helper_remu_i64(uint64_t arg1, uint64_t arg2)
+uint64_t HELPER(remu_i64)(uint64_t arg1, uint64_t arg2)
 {
     return arg1 % arg2;
 }
+
+uint64_t HELPER(muluh_i64)(uint64_t arg1, uint64_t arg2)
+{
+    uint64_t l, h;
+    mulu64(&l, &h, arg1, arg2);
+    return h;
+}
+
+int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2)
+{
+    uint64_t l, h;
+    muls64(&l, &h, arg1, arg2);
+    return h;
+}
+
+uint32_t HELPER(clz_i32)(uint32_t arg, uint32_t zero_val)
+{
+    return arg ? clz32(arg) : zero_val;
+}
+
+uint32_t HELPER(ctz_i32)(uint32_t arg, uint32_t zero_val)
+{
+    return arg ? ctz32(arg) : zero_val;
+}
+
+uint64_t HELPER(clz_i64)(uint64_t arg, uint64_t zero_val)
+{
+    return arg ? clz64(arg) : zero_val;
+}
+
+uint64_t HELPER(ctz_i64)(uint64_t arg, uint64_t zero_val)
+{
+    return arg ? ctz64(arg) : zero_val;
+}
+
+uint32_t HELPER(clrsb_i32)(uint32_t arg)
+{
+    return clrsb32(arg);
+}
+
+uint64_t HELPER(clrsb_i64)(uint64_t arg)
+{
+    return clrsb64(arg);
+}
+
+uint32_t HELPER(ctpop_i32)(uint32_t arg)
+{
+    return ctpop32(arg);
+}
+
+uint64_t HELPER(ctpop_i64)(uint64_t arg)
+{
+    return ctpop64(arg);
+}
+
+void HELPER(exit_atomic)(CPUArchState *env)
+{
+    cpu_loop_exit_atomic(ENV_GET_CPU(env), GETPC());
+}
+
+#ifndef CONFIG_SOFTMMU
+/* The softmmu versions of these helpers are in cputlb.c.  */
+
+/* Do not allow unaligned operations to proceed.  Return the host address.  */
+static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
+                               int size, uintptr_t retaddr)
+{
+    /* Enforce qemu required alignment.  */
+    if (unlikely(addr & (size - 1))) {
+        cpu_loop_exit_atomic(ENV_GET_CPU(env), retaddr);
+    }
+    return g2h(addr);
+}
+
+/* Macro to call the above, with local variables from the use context.  */
+#define ATOMIC_MMU_LOOKUP  atomic_mmu_lookup(env, addr, DATA_SIZE, GETPC())
+
+#define ATOMIC_NAME(X)   HELPER(glue(glue(atomic_ ## X, SUFFIX), END))
+#define EXTRA_ARGS
+
+#define DATA_SIZE 1
+#include "atomic_template.h"
+
+#define DATA_SIZE 2
+#include "atomic_template.h"
+
+#define DATA_SIZE 4
+#include "atomic_template.h"
+
+#ifdef CONFIG_ATOMIC64
+#define DATA_SIZE 8
+#include "atomic_template.h"
+#endif
+
+/* The following is only callable from other helpers, and matches up
+   with the softmmu version.  */
+
+#ifdef CONFIG_ATOMIC128
+
+#undef EXTRA_ARGS
+#undef ATOMIC_NAME
+#undef ATOMIC_MMU_LOOKUP
+
+#define EXTRA_ARGS     , TCGMemOpIdx oi, uintptr_t retaddr
+#define ATOMIC_NAME(X) \
+    HELPER(glue(glue(glue(atomic_ ## X, SUFFIX), END), _mmu))
+#define ATOMIC_MMU_LOOKUP  atomic_mmu_lookup(env, addr, DATA_SIZE, retaddr)
+
+#define DATA_SIZE 16
+#include "atomic_template.h"
+#endif /* CONFIG_ATOMIC128 */
+
+#endif /* !CONFIG_SOFTMMU */