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[Qemu-devel] [PATCH v2 05/25] target-arm: A64: Add remaining CLS/Z vecto
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH v2 05/25] target-arm: A64: Add remaining CLS/Z vector ops |
Date: |
Fri, 14 Mar 2014 18:37:54 +0000 |
From: Alex Bennée <address@hidden>
Implement the CLS, CLZ operations in the 2-reg-misc category.
Signed-off-by: Alex Bennée <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
target-arm/helper-a64.c | 5 +++++
target-arm/helper-a64.h | 1 +
target-arm/translate-a64.c | 36 +++++++++++++++++++++++++++++++++++-
3 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/target-arm/helper-a64.c b/target-arm/helper-a64.c
index 80ed029..8f53223 100644
--- a/target-arm/helper-a64.c
+++ b/target-arm/helper-a64.c
@@ -60,6 +60,11 @@ uint32_t HELPER(cls32)(uint32_t x)
return clrsb32(x);
}
+uint32_t HELPER(clz32)(uint32_t x)
+{
+ return clz32(x);
+}
+
uint64_t HELPER(rbit64)(uint64_t x)
{
/* assign the correct byte position */
diff --git a/target-arm/helper-a64.h b/target-arm/helper-a64.h
index 43d8bbf..a113d22 100644
--- a/target-arm/helper-a64.h
+++ b/target-arm/helper-a64.h
@@ -21,6 +21,7 @@ DEF_HELPER_FLAGS_2(sdiv64, TCG_CALL_NO_RWG_SE, s64, s64, s64)
DEF_HELPER_FLAGS_1(clz64, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_FLAGS_1(cls64, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_FLAGS_1(cls32, TCG_CALL_NO_RWG_SE, i32, i32)
+DEF_HELPER_FLAGS_1(clz32, TCG_CALL_NO_RWG_SE, i32, i32)
DEF_HELPER_FLAGS_1(rbit64, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_3(vfp_cmps_a64, i64, f32, f32, ptr)
DEF_HELPER_3(vfp_cmpes_a64, i64, f32, f32, ptr)
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index 427f484..4d40fb0 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -6584,6 +6584,13 @@ static void handle_2misc_64(DisasContext *s, int opcode,
bool u,
TCGCond cond;
switch (opcode) {
+ case 0x4: /* CLS, CLZ */
+ if (u) {
+ gen_helper_clz64(tcg_rd, tcg_rn);
+ } else {
+ gen_helper_cls64(tcg_rd, tcg_rn);
+ }
+ break;
case 0x5: /* NOT */
/* This opcode is shared with CNT and RBIT but we have earlier
* enforced that size == 3 if and only if this is the NOT insn.
@@ -8316,8 +8323,13 @@ static void disas_simd_two_reg_misc(DisasContext *s,
uint32_t insn)
}
handle_2misc_narrow(s, opcode, u, is_q, size, rn, rd);
return;
- case 0x2: /* SADDLP, UADDLP */
case 0x4: /* CLS, CLZ */
+ if (size == 3) {
+ unallocated_encoding(s);
+ return;
+ }
+ break;
+ case 0x2: /* SADDLP, UADDLP */
case 0x6: /* SADALP, UADALP */
if (size == 3) {
unallocated_encoding(s);
@@ -8484,6 +8496,13 @@ static void disas_simd_two_reg_misc(DisasContext *s,
uint32_t insn)
case 0x9: /* CMEQ, CMLE */
cond = u ? TCG_COND_LE : TCG_COND_EQ;
goto do_cmop;
+ case 0x4: /* CLS */
+ if (u) {
+ gen_helper_clz32(tcg_res, tcg_op);
+ } else {
+ gen_helper_cls32(tcg_res, tcg_op);
+ }
+ break;
case 0xb: /* ABS, NEG */
if (u) {
tcg_gen_neg_i32(tcg_res, tcg_op);
@@ -8567,6 +8586,21 @@ static void disas_simd_two_reg_misc(DisasContext *s,
uint32_t insn)
}
}
break;
+ case 0x4: /* CLS, CLZ */
+ if (u) {
+ if (size == 0) {
+ gen_helper_neon_clz_u8(tcg_res, tcg_op);
+ } else {
+ gen_helper_neon_clz_u16(tcg_res, tcg_op);
+ }
+ } else {
+ if (size == 0) {
+ gen_helper_neon_cls_s8(tcg_res, tcg_op);
+ } else {
+ gen_helper_neon_cls_s16(tcg_res, tcg_op);
+ }
+ }
+ break;
default:
g_assert_not_reached();
}
--
1.9.0
- [Qemu-devel] [PATCH v2 00/25] A64: Neon patches, sixth set, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 07/25] target-arm: A64: Implement SADDLP, UADDLP, SADALP, UADALP, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 10/25] target-arm: A64: Implement FCVTN, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 21/25] target-arm: A64: Move handle_2misc_narrow function, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 23/25] target-arm: A64: Implement FCVTXN, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 08/25] target-arm: A64: Implement SHLL, SHLL2, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 15/25] target-arm: A64: Implement FRINT*, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 19/25] softfloat: export squash_input_denormal functions, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 05/25] target-arm: A64: Add remaining CLS/Z vector ops,
Peter Maydell <=
- [Qemu-devel] [PATCH v2 06/25] target-arm: A64: Saturating and narrowing shift ops, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 17/25] target-arm: A64: Handle saturating left shifts SQSHL, SQSHLU, UQSHL, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 03/25] target-arm: A64: Add last AdvSIMD Integer to FP ops, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 18/25] target-arm: A64: Implement FCVTZS, FCVTZU in the shift-imm categories, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 16/25] exec-all.h: Increase MAX_OP_PER_INSTR for ARM A64 decoder, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 09/25] target-arm: A64: Implement FCVT[NMAPZ][SU] SIMD instructions, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 14/25] target-arm: A64: Implement SRI, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 12/25] target-arm: A64: List unsupported shift-imm opcodes, Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 04/25] target-arm: A64: Add FSQRT to C3.6.17 (two misc), Peter Maydell, 2014/03/14
- [Qemu-devel] [PATCH v2 22/25] target-arm: A64: Implement scalar saturating narrow ops, Peter Maydell, 2014/03/14