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path: root/tcg/ppc64/tcg-target.c
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Diffstat (limited to 'tcg/ppc64/tcg-target.c')
-rw-r--r--tcg/ppc64/tcg-target.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 18338a2f02..1c6be96dbe 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -1676,6 +1676,44 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
const_args[2]);
break;
+ case INDEX_op_bswap16_i32:
+ case INDEX_op_bswap16_i64:
+ a0 = args[0], a1 = args[1];
+ /* a1 = abcd */
+ if (a0 != a1) {
+ /* a0 = (a1 r<< 24) & 0xff # 000c */
+ tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
+ /* a0 = (a0 & ~0xff00) | (a1 r<< 8) & 0xff00 # 00dc */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 8, 16, 23);
+ } else {
+ /* r0 = (a1 r<< 8) & 0xff00 # 00d0 */
+ tcg_out_rlw(s, RLWINM, TCG_REG_R0, a1, 8, 16, 23);
+ /* a0 = (a1 r<< 24) & 0xff # 000c */
+ tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
+ /* a0 = a0 | r0 # 00dc */
+ tcg_out32(s, OR | SAB(TCG_REG_R0, a0, a0));
+ }
+ break;
+
+ case INDEX_op_bswap32_i32:
+ case INDEX_op_bswap32_i64:
+ /* Stolen from gcc's builtin_bswap32 */
+ a1 = args[1];
+ a0 = args[0] == a1 ? TCG_REG_R0 : args[0];
+
+ /* a1 = args[1] # abcd */
+ /* a0 = rotate_left (a1, 8) # bcda */
+ tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
+ /* a0 = (a0 & ~0xff000000) | ((a1 r<< 24) & 0xff000000) # dcda */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
+ /* a0 = (a0 & ~0x0000ff00) | ((a1 r<< 24) & 0x0000ff00) # dcba */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
+
+ if (a0 == TCG_REG_R0) {
+ tcg_out_mov(s, TCG_TYPE_I64, args[0], a0);
+ }
+ break;
+
default:
tcg_dump_ops (s);
tcg_abort ();
@@ -1781,6 +1819,11 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_setcond_i32, { "r", "r", "ri" } },
{ INDEX_op_setcond_i64, { "r", "r", "ri" } },
+ { INDEX_op_bswap16_i32, { "r", "r" } },
+ { INDEX_op_bswap16_i64, { "r", "r" } },
+ { INDEX_op_bswap32_i32, { "r", "r" } },
+ { INDEX_op_bswap32_i64, { "r", "r" } },
+
{ -1 },
};