aboutsummaryrefslogtreecommitdiff
path: root/tcg
diff options
context:
space:
mode:
authorRichard Henderson <rth@twiddle.net>2013-01-30 21:41:54 -0800
committerRichard Henderson <rth@twiddle.net>2013-04-15 20:09:51 +0200
commit68aebd45b1bc13828029e60d12147222ddef3259 (patch)
tree81ff025c692d57f4a8bdaf9c18030057dd500897 /tcg
parent5d221582009d942de77a538d21b09c9120929dc5 (diff)
downloadqemu-68aebd45b1bc13828029e60d12147222ddef3259.zip
qemu-68aebd45b1bc13828029e60d12147222ddef3259.tar.gz
qemu-68aebd45b1bc13828029e60d12147222ddef3259.tar.bz2
tcg-ppc64: Implement bswap64
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/ppc64/tcg-target.c35
-rw-r--r--tcg/ppc64/tcg-target.h2
2 files changed, 36 insertions, 1 deletions
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 1c6be96..ea3209d 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -1714,6 +1714,40 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
}
break;
+ case INDEX_op_bswap64_i64:
+ a0 = args[0], a1 = args[1], a2 = 0;
+ if (a0 == a1) {
+ a0 = 0;
+ a2 = a1;
+ }
+
+ /* a1 = # abcd efgh */
+ /* a0 = rl32(a1, 8) # 0000 fghe */
+ tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
+ /* a0 = dep(a0, rl32(a1, 24), 0xff000000) # 0000 hghe */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
+ /* a0 = dep(a0, rl32(a1, 24), 0x0000ff00) # 0000 hgfe */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
+
+ /* a0 = rl64(a0, 32) # hgfe 0000 */
+ /* a2 = rl64(a1, 32) # efgh abcd */
+ tcg_out_rld(s, RLDICL, a0, a0, 32, 0);
+ tcg_out_rld(s, RLDICL, a2, a1, 32, 0);
+
+ /* a0 = dep(a0, rl32(a2, 8), 0xffffffff) # hgfe bcda */
+ tcg_out_rlw(s, RLWIMI, a0, a2, 8, 0, 31);
+ /* a0 = dep(a0, rl32(a2, 24), 0xff000000) # hgfe dcda */
+ tcg_out_rlw(s, RLWIMI, a0, a2, 24, 0, 7);
+ /* a0 = dep(a0, rl32(a2, 24), 0x0000ff00) # hgfe dcba */
+ tcg_out_rlw(s, RLWIMI, a0, a2, 24, 16, 23);
+
+ if (a0 == 0) {
+ tcg_out_mov(s, TCG_TYPE_I64, args[0], a0);
+ /* Revert the source rotate that we performed above. */
+ tcg_out_rld(s, RLDICL, a1, a1, 32, 0);
+ }
+ break;
+
default:
tcg_dump_ops (s);
tcg_abort ();
@@ -1823,6 +1857,7 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_bswap16_i64, { "r", "r" } },
{ INDEX_op_bswap32_i32, { "r", "r" } },
{ INDEX_op_bswap32_i64, { "r", "r" } },
+ { INDEX_op_bswap64_i64, { "r", "r" } },
{ -1 },
};
diff --git a/tcg/ppc64/tcg-target.h b/tcg/ppc64/tcg-target.h
index 7cd1e98..76001e8 100644
--- a/tcg/ppc64/tcg-target.h
+++ b/tcg/ppc64/tcg-target.h
@@ -102,7 +102,7 @@ typedef enum {
#define TCG_TARGET_HAS_ext32s_i64 1
#define TCG_TARGET_HAS_bswap16_i64 1
#define TCG_TARGET_HAS_bswap32_i64 1
-#define TCG_TARGET_HAS_bswap64_i64 0
+#define TCG_TARGET_HAS_bswap64_i64 1
#define TCG_TARGET_HAS_not_i64 1
#define TCG_TARGET_HAS_neg_i64 1
#define TCG_TARGET_HAS_andc_i64 0