tcg/arm: Move isa detection to tcg-target.h

This allows us to use this detection within the TCG_TARGET_HAS_* macros, instead of requiring a function call into tcg-target.inc.c. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
qemu · Jan 10, 2017 · 40b2ccb · 40b2ccb
1 parent e2179f9
commit 40b2ccb
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Showing 2 changed files with 33 additions and 44 deletions.
diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h
@@ -26,6 +26,37 @@
 #ifndef ARM_TCG_TARGET_H
 #define ARM_TCG_TARGET_H
 
+/* The __ARM_ARCH define is provided by gcc 4.8.  Construct it otherwise.  */
+#ifndef __ARM_ARCH
+# if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
+     || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
+     || defined(__ARM_ARCH_7EM__)
+#  define __ARM_ARCH 7
+# elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
+       || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \
+       || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__)
+#  define __ARM_ARCH 6
+# elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5E__) \
+       || defined(__ARM_ARCH_5T__) || defined(__ARM_ARCH_5TE__) \
+       || defined(__ARM_ARCH_5TEJ__)
+#  define __ARM_ARCH 5
+# else
+#  define __ARM_ARCH 4
+# endif
+#endif
+
+extern int arm_arch;
+
+#if defined(__ARM_ARCH_5T__) \
+    || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__)
+# define use_armv5t_instructions 1
+#else
+# define use_armv5t_instructions use_armv6_instructions
+#endif
+
+#define use_armv6_instructions  (__ARM_ARCH >= 6 || arm_arch >= 6)
+#define use_armv7_instructions  (__ARM_ARCH >= 7 || arm_arch >= 7)
+
 #undef TCG_TARGET_STACK_GROWSUP
 #define TCG_TARGET_INSN_UNIT_SIZE 4
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
@@ -79,7 +110,7 @@ extern bool use_idiv_instructions;
 #define TCG_TARGET_HAS_eqv_i32          0
 #define TCG_TARGET_HAS_nand_i32         0
 #define TCG_TARGET_HAS_nor_i32          0
-#define TCG_TARGET_HAS_deposit_i32      1
+#define TCG_TARGET_HAS_deposit_i32      use_armv7_instructions
 #define TCG_TARGET_HAS_extract_i32      0
 #define TCG_TARGET_HAS_sextract_i32     0
 #define TCG_TARGET_HAS_movcond_i32      1
@@ -90,9 +121,6 @@ extern bool use_idiv_instructions;
 #define TCG_TARGET_HAS_div_i32          use_idiv_instructions
 #define TCG_TARGET_HAS_rem_i32          0
 
-extern bool tcg_target_deposit_valid(int ofs, int len);
-#define TCG_TARGET_deposit_i32_valid  tcg_target_deposit_valid
-
 enum {
     TCG_AREG0 = TCG_REG_R6,
 };

diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c
@@ -25,36 +25,7 @@
 #include "elf.h"
 #include "tcg-be-ldst.h"
 
-/* The __ARM_ARCH define is provided by gcc 4.8.  Construct it otherwise.  */
-#ifndef __ARM_ARCH
-# if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
-     || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
-     || defined(__ARM_ARCH_7EM__)
-#  define __ARM_ARCH 7
-# elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
-       || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \
-       || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__)
-#  define __ARM_ARCH 6
-# elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5E__) \
-       || defined(__ARM_ARCH_5T__) || defined(__ARM_ARCH_5TE__) \
-       || defined(__ARM_ARCH_5TEJ__)
-#  define __ARM_ARCH 5
-# else
-#  define __ARM_ARCH 4
-# endif
-#endif
-
-static int arm_arch = __ARM_ARCH;
-
-#if defined(__ARM_ARCH_5T__) \
-    || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__)
-# define use_armv5t_instructions 1
-#else
-# define use_armv5t_instructions use_armv6_instructions
-#endif
-
-#define use_armv6_instructions  (__ARM_ARCH >= 6 || arm_arch >= 6)
-#define use_armv7_instructions  (__ARM_ARCH >= 7 || arm_arch >= 7)
+int arm_arch = __ARM_ARCH;
 
 #ifndef use_idiv_instructions
 bool use_idiv_instructions;
@@ -730,16 +701,6 @@ static inline void tcg_out_bswap32(TCGContext *s, int cond, int rd, int rn)
     }
 }
 
-bool tcg_target_deposit_valid(int ofs, int len)
-{
-    /* ??? Without bfi, we could improve over generic code by combining
-       the right-shift from a non-zero ofs with the orr.  We do run into
-       problems when rd == rs, and the mask generated from ofs+len doesn't
-       fit into an immediate.  We would have to be careful not to pessimize
-       wrt the optimizations performed on the expanded code.  */
-    return use_armv7_instructions;
-}
-
 static inline void tcg_out_deposit(TCGContext *s, int cond, TCGReg rd,
                                    TCGArg a1, int ofs, int len, bool const_a1)
 {