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-rw-r--r--tcg/tcg-op.c123
1 files changed, 83 insertions, 40 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index dc65577e2f..949cbf2f03 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -1001,20 +1001,35 @@ void tcg_gen_ext16u_i32(TCGv_i32 ret, TCGv_i32 arg)
}
}
-/* Note: we assume the two high bytes are set to zero */
-void tcg_gen_bswap16_i32(TCGv_i32 ret, TCGv_i32 arg)
+void tcg_gen_bswap16_i32(TCGv_i32 ret, TCGv_i32 arg, int flags)
{
+ /* Only one extension flag may be present. */
+ tcg_debug_assert(!(flags & TCG_BSWAP_OS) || !(flags & TCG_BSWAP_OZ));
+
if (TCG_TARGET_HAS_bswap16_i32) {
- tcg_gen_op3i_i32(INDEX_op_bswap16_i32, ret, arg,
- TCG_BSWAP_IZ | TCG_BSWAP_OZ);
+ tcg_gen_op3i_i32(INDEX_op_bswap16_i32, ret, arg, flags);
} else {
TCGv_i32 t0 = tcg_temp_new_i32();
+ TCGv_i32 t1 = tcg_temp_new_i32();
+
+ tcg_gen_shri_i32(t0, arg, 8);
+ if (!(flags & TCG_BSWAP_IZ)) {
+ tcg_gen_ext8u_i32(t0, t0);
+ }
- tcg_gen_ext8u_i32(t0, arg);
- tcg_gen_shli_i32(t0, t0, 8);
- tcg_gen_shri_i32(ret, arg, 8);
- tcg_gen_or_i32(ret, ret, t0);
+ if (flags & TCG_BSWAP_OS) {
+ tcg_gen_shli_i32(t1, arg, 24);
+ tcg_gen_sari_i32(t1, t1, 16);
+ } else if (flags & TCG_BSWAP_OZ) {
+ tcg_gen_ext8u_i32(t1, arg);
+ tcg_gen_shli_i32(t1, t1, 8);
+ } else {
+ tcg_gen_shli_i32(t1, arg, 8);
+ }
+
+ tcg_gen_or_i32(ret, t0, t1);
tcg_temp_free_i32(t0);
+ tcg_temp_free_i32(t1);
}
}
@@ -1655,51 +1670,79 @@ void tcg_gen_ext32u_i64(TCGv_i64 ret, TCGv_i64 arg)
}
}
-/* Note: we assume the six high bytes are set to zero */
-void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg)
+void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg, int flags)
{
+ /* Only one extension flag may be present. */
+ tcg_debug_assert(!(flags & TCG_BSWAP_OS) || !(flags & TCG_BSWAP_OZ));
+
if (TCG_TARGET_REG_BITS == 32) {
- tcg_gen_bswap16_i32(TCGV_LOW(ret), TCGV_LOW(arg));
- tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
+ tcg_gen_bswap16_i32(TCGV_LOW(ret), TCGV_LOW(arg), flags);
+ if (flags & TCG_BSWAP_OS) {
+ tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_LOW(ret), 31);
+ } else {
+ tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
+ }
} else if (TCG_TARGET_HAS_bswap16_i64) {
- tcg_gen_op3i_i64(INDEX_op_bswap16_i64, ret, arg,
- TCG_BSWAP_IZ | TCG_BSWAP_OZ);
+ tcg_gen_op3i_i64(INDEX_op_bswap16_i64, ret, arg, flags);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
+ TCGv_i64 t1 = tcg_temp_new_i64();
- tcg_gen_ext8u_i64(t0, arg);
- tcg_gen_shli_i64(t0, t0, 8);
- tcg_gen_shri_i64(ret, arg, 8);
- tcg_gen_or_i64(ret, ret, t0);
+ tcg_gen_shri_i64(t0, arg, 8);
+ if (!(flags & TCG_BSWAP_IZ)) {
+ tcg_gen_ext8u_i64(t0, t0);
+ }
+
+ if (flags & TCG_BSWAP_OS) {
+ tcg_gen_shli_i64(t1, arg, 56);
+ tcg_gen_sari_i64(t1, t1, 48);
+ } else if (flags & TCG_BSWAP_OZ) {
+ tcg_gen_ext8u_i64(t1, arg);
+ tcg_gen_shli_i64(t1, t1, 8);
+ } else {
+ tcg_gen_shli_i64(t1, arg, 8);
+ }
+
+ tcg_gen_or_i64(ret, t0, t1);
tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
}
}
-/* Note: we assume the four high bytes are set to zero */
-void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg)
+void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg, int flags)
{
+ /* Only one extension flag may be present. */
+ tcg_debug_assert(!(flags & TCG_BSWAP_OS) || !(flags & TCG_BSWAP_OZ));
+
if (TCG_TARGET_REG_BITS == 32) {
tcg_gen_bswap32_i32(TCGV_LOW(ret), TCGV_LOW(arg));
- tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
+ if (flags & TCG_BSWAP_OS) {
+ tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_LOW(ret), 31);
+ } else {
+ tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
+ }
} else if (TCG_TARGET_HAS_bswap32_i64) {
- tcg_gen_op3i_i64(INDEX_op_bswap32_i64, ret, arg,
- TCG_BSWAP_IZ | TCG_BSWAP_OZ);
+ tcg_gen_op3i_i64(INDEX_op_bswap32_i64, ret, arg, flags);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
TCGv_i64 t2 = tcg_constant_i64(0x00ff00ff);
- /* arg = ....abcd */
- tcg_gen_shri_i64(t0, arg, 8); /* t0 = .....abc */
- tcg_gen_and_i64(t1, arg, t2); /* t1 = .....b.d */
- tcg_gen_and_i64(t0, t0, t2); /* t0 = .....a.c */
- tcg_gen_shli_i64(t1, t1, 8); /* t1 = ....b.d. */
- tcg_gen_or_i64(ret, t0, t1); /* ret = ....badc */
-
- tcg_gen_shli_i64(t1, ret, 48); /* t1 = dc...... */
- tcg_gen_shri_i64(t0, ret, 16); /* t0 = ......ba */
- tcg_gen_shri_i64(t1, t1, 32); /* t1 = ....dc.. */
- tcg_gen_or_i64(ret, t0, t1); /* ret = ....dcba */
+ /* arg = xxxxabcd */
+ tcg_gen_shri_i64(t0, arg, 8); /* t0 = .xxxxabc */
+ tcg_gen_and_i64(t1, arg, t2); /* t1 = .....b.d */
+ tcg_gen_and_i64(t0, t0, t2); /* t0 = .....a.c */
+ tcg_gen_shli_i64(t1, t1, 8); /* t1 = ....b.d. */
+ tcg_gen_or_i64(ret, t0, t1); /* ret = ....badc */
+
+ tcg_gen_shli_i64(t1, ret, 48); /* t1 = dc...... */
+ tcg_gen_shri_i64(t0, ret, 16); /* t0 = ......ba */
+ if (flags & TCG_BSWAP_OS) {
+ tcg_gen_sari_i64(t1, t1, 32); /* t1 = ssssdc.. */
+ } else {
+ tcg_gen_shri_i64(t1, t1, 32); /* t1 = ....dc.. */
+ }
+ tcg_gen_or_i64(ret, t0, t1); /* ret = ssssdcba */
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
@@ -2846,7 +2889,7 @@ void tcg_gen_qemu_ld_i32(TCGv_i32 val, TCGv addr, TCGArg idx, MemOp memop)
if ((orig_memop ^ memop) & MO_BSWAP) {
switch (orig_memop & MO_SIZE) {
case MO_16:
- tcg_gen_bswap16_i32(val, val);
+ tcg_gen_bswap16_i32(val, val, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
if (orig_memop & MO_SIGN) {
tcg_gen_ext16s_i32(val, val);
}
@@ -2874,7 +2917,7 @@ void tcg_gen_qemu_st_i32(TCGv_i32 val, TCGv addr, TCGArg idx, MemOp memop)
switch (memop & MO_SIZE) {
case MO_16:
tcg_gen_ext16u_i32(swap, val);
- tcg_gen_bswap16_i32(swap, swap);
+ tcg_gen_bswap16_i32(swap, swap, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
break;
case MO_32:
tcg_gen_bswap32_i32(swap, val);
@@ -2935,13 +2978,13 @@ void tcg_gen_qemu_ld_i64(TCGv_i64 val, TCGv addr, TCGArg idx, MemOp memop)
if ((orig_memop ^ memop) & MO_BSWAP) {
switch (orig_memop & MO_SIZE) {
case MO_16:
- tcg_gen_bswap16_i64(val, val);
+ tcg_gen_bswap16_i64(val, val, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
if (orig_memop & MO_SIGN) {
tcg_gen_ext16s_i64(val, val);
}
break;
case MO_32:
- tcg_gen_bswap32_i64(val, val);
+ tcg_gen_bswap32_i64(val, val, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
if (orig_memop & MO_SIGN) {
tcg_gen_ext32s_i64(val, val);
}
@@ -2975,11 +3018,11 @@ void tcg_gen_qemu_st_i64(TCGv_i64 val, TCGv addr, TCGArg idx, MemOp memop)
switch (memop & MO_SIZE) {
case MO_16:
tcg_gen_ext16u_i64(swap, val);
- tcg_gen_bswap16_i64(swap, swap);
+ tcg_gen_bswap16_i64(swap, swap, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
break;
case MO_32:
tcg_gen_ext32u_i64(swap, val);
- tcg_gen_bswap32_i64(swap, swap);
+ tcg_gen_bswap32_i64(swap, swap, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
break;
case MO_64:
tcg_gen_bswap64_i64(swap, val);