Patchwork [2/7] tcg-ppc: Implement deposit operation.

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Submitter Richard Henderson
Date Jan. 7, 2011, 10:42 p.m.
Message ID <1294440183-885-3-git-send-email-rth@twiddle.net>
Download mbox | patch
Permalink /patch/77933/
State New
Headers show

Comments

Richard Henderson - Jan. 7, 2011, 10:42 p.m.
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 tcg/ppc/tcg-target.c |   17 ++++++++++++++++-
 tcg/ppc/tcg-target.h |    1 +
 2 files changed, 17 insertions(+), 1 deletions(-)
malc - Jan. 7, 2011, 11:33 p.m.
On Fri, 7 Jan 2011, Richard Henderson wrote:

> Signed-off-by: Richard Henderson <rth@twiddle.net>
> ---
>  tcg/ppc/tcg-target.c |   17 ++++++++++++++++-
>  tcg/ppc/tcg-target.h |    1 +
>  2 files changed, 17 insertions(+), 1 deletions(-)
> 

PPC bits look fine to me.

[..snip..]

Patch

diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index 7970268..2947d1b 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -1611,6 +1611,21 @@  static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
         }
         break;
 
+    case INDEX_op_deposit_i32:
+        {
+            unsigned len = args[3] & 31;
+            unsigned lsb_ofs = (args[3] >> 8) & 31;
+            unsigned msb_ofs = 31 - lsb_ofs;
+
+            tcg_out32 (s, RLWIMI
+                       | RA(args[0])
+                       | RS(args[2])
+                       | SH((32 - msb_ofs - len) & 31)
+                       | MB(msb_ofs)
+                       | ME((msb_ofs + len - 1) & 31));
+        }
+        break;
+
     case INDEX_op_add2_i32:
         if (args[0] == args[3] || args[0] == args[5]) {
             tcg_out32 (s, ADDC | TAB (0, args[2], args[4]));
@@ -1829,9 +1844,9 @@  static const TCGTargetOpDef ppc_op_defs[] = {
     { INDEX_op_shl_i32, { "r", "r", "ri" } },
     { INDEX_op_shr_i32, { "r", "r", "ri" } },
     { INDEX_op_sar_i32, { "r", "r", "ri" } },
-
     { INDEX_op_rotl_i32, { "r", "r", "ri" } },
     { INDEX_op_rotr_i32, { "r", "r", "ri" } },
+    { INDEX_op_deposit_i32, { "r", "0", "r" } },
 
     { INDEX_op_brcond_i32, { "r", "ri" } },
 
diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h
index a1f8599..bbf38d5 100644
--- a/tcg/ppc/tcg-target.h
+++ b/tcg/ppc/tcg-target.h
@@ -92,6 +92,7 @@  enum {
 #define TCG_TARGET_HAS_eqv_i32
 #define TCG_TARGET_HAS_nand_i32
 #define TCG_TARGET_HAS_nor_i32
+#define TCG_TARGET_HAS_deposit_i32
 
 #define TCG_AREG0 TCG_REG_R27