commit 7ec8bab3deae643b1ce579c2d65a244f30708330
author Richard Henderson <rth@twiddle.net> Fri Oct 14 12:04:32 2016 -0500
committer Richard Henderson <rth@twiddle.net> Tue Jan 10 07:59:11 2017 -0800
tree e017911ab6448bf6878220ff174d7119ba9f19b1
parent 41a0e54756a9ae6b60be34bb33302a7e085fdb07

tcg: Add field extraction primitives

Adds tcg_gen_extract_* and tcg_gen_sextract_* for extraction of
fixed position bitfields, much like we already have for deposit.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

tcg/tcg.h

diff --git a/tcg/tcg.h b/tcg/tcg.h
index a35e4c4..5fd3733 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -112,6 +112,8 @@
 #define TCG_TARGET_HAS_nand_i64         0
 #define TCG_TARGET_HAS_nor_i64          0
 #define TCG_TARGET_HAS_deposit_i64      0
+#define TCG_TARGET_HAS_extract_i64      0
+#define TCG_TARGET_HAS_sextract_i64     0
 #define TCG_TARGET_HAS_movcond_i64      0
 #define TCG_TARGET_HAS_add2_i64         0
 #define TCG_TARGET_HAS_sub2_i64         0
@@ -130,6 +132,12 @@
 #ifndef TCG_TARGET_deposit_i64_valid
 #define TCG_TARGET_deposit_i64_valid(ofs, len) 1
 #endif
+#ifndef TCG_TARGET_extract_i32_valid
+#define TCG_TARGET_extract_i32_valid(ofs, len) 1
+#endif
+#ifndef TCG_TARGET_extract_i64_valid
+#define TCG_TARGET_extract_i64_valid(ofs, len) 1
+#endif
 
 /* Only one of DIV or DIV2 should be defined.  */
 #if defined(TCG_TARGET_HAS_div_i32)