For INDEX_op_bswap32_i32, pass 0 for flags: input not zero-extended,
output does not need extension within the host 64-bit register.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 38 +++++++++++++++++++++++++-------------
1 file changed, 25 insertions(+), 13 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 690c77b4da..e868417168 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -788,25 +788,35 @@ static inline void tcg_out_sari64(TCGContext *s, TCGReg
dst, TCGReg src, int c)
tcg_out32(s, SRADI | RA(dst) | RS(src) | SH(c & 0x1f) | ((c >> 4) & 2));
}
-static void tcg_out_bswap16(TCGContext *s, TCGReg dst, TCGReg src)
+static void tcg_out_bswap16(TCGContext *s, TCGReg dst, TCGReg src, int flags)
{
TCGReg tmp = dst == src ? TCG_REG_R0 : dst;
- /* src = abcd */
- tcg_out_rlw(s, RLWINM, tmp, src, 24, 24, 31); /* tmp = 000c */
- tcg_out_rlw(s, RLWIMI, tmp, src, 8, 16, 23); /* tmp = 00dc */
- tcg_out_mov(s, TCG_TYPE_REG, dst, tmp);
+ /* src = xxxx abcd */
+ tcg_out_rlw(s, RLWINM, tmp, src, 24, 24, 31); /* tmp = 0000 000c */
+ tcg_out_rlw(s, RLWIMI, tmp, src, 8, 16, 23); /* tmp = 0000 00dc */
+
+ if (flags & TCG_BSWAP_OS) {
+ tcg_out_ext16s(s, dst, tmp);
+ } else {
+ tcg_out_mov(s, TCG_TYPE_REG, dst, tmp);
+ }
}
-static void tcg_out_bswap32(TCGContext *s, TCGReg dst, TCGReg src)
+static void tcg_out_bswap32(TCGContext *s, TCGReg dst, TCGReg src, int flags)
{
TCGReg tmp = dst == src ? TCG_REG_R0 : dst;
- /* Stolen from gcc's builtin_bswap32. src = abcd */
- tcg_out_rlw(s, RLWINM, tmp, src, 8, 0, 31); /* tmp = bcda */
- tcg_out_rlw(s, RLWIMI, tmp, src, 24, 0, 7); /* tmp = dcda */
- tcg_out_rlw(s, RLWIMI, tmp, src, 24, 16, 23); /* tmp = dcba */
- tcg_out_mov(s, TCG_TYPE_REG, dst, tmp);
+ /* Stolen from gcc's builtin_bswap32. src = xxxx abcd */
+ tcg_out_rlw(s, RLWINM, tmp, src, 8, 0, 31); /* tmp = 0000 bcda */
+ tcg_out_rlw(s, RLWIMI, tmp, src, 24, 0, 7); /* tmp = 0000 dcda */
+ tcg_out_rlw(s, RLWIMI, tmp, src, 24, 16, 23); /* tmp = 0000 dcba */
+
+ if (flags & TCG_BSWAP_OS) {
+ tcg_out_ext32s(s, dst, tmp);
+ } else {
+ tcg_out_mov(s, TCG_TYPE_REG, dst, tmp);
+ }
}
static void tcg_out_bswap64(TCGContext *s, TCGReg dst, TCGReg src)
@@ -2820,11 +2830,13 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
case INDEX_op_bswap16_i32:
case INDEX_op_bswap16_i64:
- tcg_out_bswap16(s, args[0], args[1]);
+ tcg_out_bswap16(s, args[0], args[1], args[2]);
break;
case INDEX_op_bswap32_i32:
+ tcg_out_bswap32(s, args[0], args[1], 0);
+ break;
case INDEX_op_bswap32_i64:
- tcg_out_bswap32(s, args[0], args[1]);
+ tcg_out_bswap32(s, args[0], args[1], args[2]);
break;
case INDEX_op_bswap64_i64:
tcg_out_bswap64(s, args[0], args[1]);
--
2.25.1
