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[v2,3/6] tcg/mips: Add use_mips32r6_instructions definition

Message ID 1443697130-21431-4-git-send-email-james.hogan@imgtec.com
State New
Headers show

Commit Message

James Hogan Oct. 1, 2015, 10:58 a.m. UTC 
Add definition use_mips32r6_instructions to the MIPS TCG backend which
is constant 1 when built for MIPS release 6. This will be used to decide
between pre-R6 and R6 instruction encodings.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Cc: Aurelien Jarno <aurelien@aurel32.net>
---
 tcg/mips/tcg-target.h | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/tcg/mips/tcg-target.h b/tcg/mips/tcg-target.h
index f5ba52cacfe5..e579c10b9aaa 100644
--- a/tcg/mips/tcg-target.h
+++ b/tcg/mips/tcg-target.h
@@ -96,6 +96,13 @@  extern bool use_mips32_instructions;
 extern bool use_mips32r2_instructions;
 #endif
 
+/* MIPS32R6 instruction set detection */
+#if defined(__mips_isa_rev) && (__mips_isa_rev >= 6)
+#define use_mips32r6_instructions  1
+#else
+#define use_mips32r6_instructions  0
+#endif
+
 /* optional instructions */
 #define TCG_TARGET_HAS_div_i32          1
 #define TCG_TARGET_HAS_rem_i32          1