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[PULL 04/15] tcg: Implement tcg_gen_{h,w}swap_{i32,i64}
From: |
Thomas Huth |
Subject: |
[PULL 04/15] tcg: Implement tcg_gen_{h,w}swap_{i32,i64} |
Date: |
Wed, 4 May 2022 13:05:10 +0200 |
From: Richard Henderson <richard.henderson@linaro.org>
Swap half-words (16-bit) and words (32-bit) within a larger value.
Mirrors functions of the same names within include/qemu/bitops.h.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: David Miller <dmiller423@gmail.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20220428094708.84835-5-david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
include/tcg/tcg-op.h | 6 ++++++
tcg/tcg-op.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+)
diff --git a/include/tcg/tcg-op.h b/include/tcg/tcg-op.h
index caa0a63612..b09b8b4a05 100644
--- a/include/tcg/tcg-op.h
+++ b/include/tcg/tcg-op.h
@@ -332,6 +332,7 @@ void tcg_gen_ext8u_i32(TCGv_i32 ret, TCGv_i32 arg);
void tcg_gen_ext16u_i32(TCGv_i32 ret, TCGv_i32 arg);
void tcg_gen_bswap16_i32(TCGv_i32 ret, TCGv_i32 arg, int flags);
void tcg_gen_bswap32_i32(TCGv_i32 ret, TCGv_i32 arg);
+void tcg_gen_hswap_i32(TCGv_i32 ret, TCGv_i32 arg);
void tcg_gen_smin_i32(TCGv_i32, TCGv_i32 arg1, TCGv_i32 arg2);
void tcg_gen_smax_i32(TCGv_i32, TCGv_i32 arg1, TCGv_i32 arg2);
void tcg_gen_umin_i32(TCGv_i32, TCGv_i32 arg1, TCGv_i32 arg2);
@@ -531,6 +532,8 @@ void tcg_gen_ext32u_i64(TCGv_i64 ret, TCGv_i64 arg);
void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg, int flags);
void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg, int flags);
void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg);
+void tcg_gen_hswap_i64(TCGv_i64 ret, TCGv_i64 arg);
+void tcg_gen_wswap_i64(TCGv_i64 ret, TCGv_i64 arg);
void tcg_gen_smin_i64(TCGv_i64, TCGv_i64 arg1, TCGv_i64 arg2);
void tcg_gen_smax_i64(TCGv_i64, TCGv_i64 arg1, TCGv_i64 arg2);
void tcg_gen_umin_i64(TCGv_i64, TCGv_i64 arg1, TCGv_i64 arg2);
@@ -1077,6 +1080,8 @@ void tcg_gen_stl_vec(TCGv_vec r, TCGv_ptr base, TCGArg
offset, TCGType t);
#define tcg_gen_bswap32_tl tcg_gen_bswap32_i64
#define tcg_gen_bswap64_tl tcg_gen_bswap64_i64
#define tcg_gen_bswap_tl tcg_gen_bswap64_i64
+#define tcg_gen_hswap_tl tcg_gen_hswap_i64
+#define tcg_gen_wswap_tl tcg_gen_wswap_i64
#define tcg_gen_concat_tl_i64 tcg_gen_concat32_i64
#define tcg_gen_extr_i64_tl tcg_gen_extr32_i64
#define tcg_gen_andc_tl tcg_gen_andc_i64
@@ -1192,6 +1197,7 @@ void tcg_gen_stl_vec(TCGv_vec r, TCGv_ptr base, TCGArg
offset, TCGType t);
#define tcg_gen_bswap16_tl tcg_gen_bswap16_i32
#define tcg_gen_bswap32_tl(D, S, F) tcg_gen_bswap32_i32(D, S)
#define tcg_gen_bswap_tl tcg_gen_bswap32_i32
+#define tcg_gen_hswap_tl tcg_gen_hswap_i32
#define tcg_gen_concat_tl_i64 tcg_gen_concat_i32_i64
#define tcg_gen_extr_i64_tl tcg_gen_extr_i64_i32
#define tcg_gen_andc_tl tcg_gen_andc_i32
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 5d48537927..019fab00cc 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -1056,6 +1056,12 @@ void tcg_gen_bswap32_i32(TCGv_i32 ret, TCGv_i32 arg)
}
}
+void tcg_gen_hswap_i32(TCGv_i32 ret, TCGv_i32 arg)
+{
+ /* Swapping 2 16-bit elements is a rotate. */
+ tcg_gen_rotli_i32(ret, arg, 16);
+}
+
void tcg_gen_smin_i32(TCGv_i32 ret, TCGv_i32 a, TCGv_i32 b)
{
tcg_gen_movcond_i32(TCG_COND_LT, ret, a, b, a, b);
@@ -1792,6 +1798,30 @@ void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg)
}
}
+void tcg_gen_hswap_i64(TCGv_i64 ret, TCGv_i64 arg)
+{
+ uint64_t m = 0x0000ffff0000ffffull;
+ TCGv_i64 t0 = tcg_temp_new_i64();
+ TCGv_i64 t1 = tcg_temp_new_i64();
+
+ /* See include/qemu/bitops.h, hswap64. */
+ tcg_gen_rotli_i64(t1, arg, 32);
+ tcg_gen_andi_i64(t0, t1, m);
+ tcg_gen_shli_i64(t0, t0, 16);
+ tcg_gen_shri_i64(t1, t1, 16);
+ tcg_gen_andi_i64(t1, t1, m);
+ tcg_gen_or_i64(ret, t0, t1);
+
+ tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
+}
+
+void tcg_gen_wswap_i64(TCGv_i64 ret, TCGv_i64 arg)
+{
+ /* Swapping 2 32-bit elements is a rotate. */
+ tcg_gen_rotli_i64(ret, arg, 32);
+}
+
void tcg_gen_not_i64(TCGv_i64 ret, TCGv_i64 arg)
{
if (TCG_TARGET_REG_BITS == 32) {
--
2.27.0
- [PULL 00/15] s390x patches, Thomas Huth, 2022/05/04
- [PULL 02/15] s390x/cpu_models: drop "msa5" from the TCG "max" model, Thomas Huth, 2022/05/04
- [PULL 03/15] s390x/cpu_models: make "max" match the unmodified "qemu" CPU model under TCG, Thomas Huth, 2022/05/04
- [PULL 01/15] target/s390x: Fix writeback to v1 in helper_vstl, Thomas Huth, 2022/05/04
- [PULL 04/15] tcg: Implement tcg_gen_{h,w}swap_{i32,i64},
Thomas Huth <=
- [PULL 06/15] target/s390x: vxeh2: vector string search, Thomas Huth, 2022/05/04
- [PULL 13/15] tests/tcg/s390x: Tests for Vector Enhancements Facility 2, Thomas Huth, 2022/05/04
- [PULL 08/15] target/s390x: vxeh2: vector shift double by bit, Thomas Huth, 2022/05/04
- [PULL 07/15] target/s390x: vxeh2: Update for changes to vector shifts, Thomas Huth, 2022/05/04
- [PULL 09/15] target/s390x: vxeh2: vector {load, store} elements reversed, Thomas Huth, 2022/05/04
- [PULL 05/15] target/s390x: vxeh2: vector convert short/32b, Thomas Huth, 2022/05/04
- [PULL 10/15] target/s390x: vxeh2: vector {load, store} byte reversed elements, Thomas Huth, 2022/05/04