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[Qemu-devel] [PATCH 76/99] target/arm: Implement FMOV (general) for fp16
From: |
Michael Roth |
Subject: |
[Qemu-devel] [PATCH 76/99] target/arm: Implement FMOV (general) for fp16 |
Date: |
Mon, 23 Jul 2018 15:17:25 -0500 |
From: Richard Henderson <address@hidden>
Adding the fp16 moves to/from general registers.
Cc: address@hidden
Signed-off-by: Richard Henderson <address@hidden>
Tested-by: Alex Bennée <address@hidden>
Message-id: address@hidden
Reviewed-by: Peter Maydell <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
(cherry picked from commit 68130236e30a1ec64363f4915349feee181bfbc1)
Signed-off-by: Michael Roth <address@hidden>
---
target/arm/translate-a64.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 639cd95772..b05f9bfe91 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -5457,6 +5457,15 @@ static void handle_fmov(DisasContext *s, int rd, int rn,
int type, bool itof)
tcg_gen_st_i64(tcg_rn, cpu_env, fp_reg_hi_offset(s, rd));
clear_vec_high(s, true, rd);
break;
+ case 3:
+ /* 16 bit */
+ tmp = tcg_temp_new_i64();
+ tcg_gen_ext16u_i64(tmp, tcg_rn);
+ write_fp_dreg(s, rd, tmp);
+ tcg_temp_free_i64(tmp);
+ break;
+ default:
+ g_assert_not_reached();
}
} else {
TCGv_i64 tcg_rd = cpu_reg(s, rd);
@@ -5474,6 +5483,12 @@ static void handle_fmov(DisasContext *s, int rd, int rn,
int type, bool itof)
/* 64 bits from top half */
tcg_gen_ld_i64(tcg_rd, cpu_env, fp_reg_hi_offset(s, rn));
break;
+ case 3:
+ /* 16 bit */
+ tcg_gen_ld16u_i64(tcg_rd, cpu_env, fp_reg_offset(s, rn, MO_16));
+ break;
+ default:
+ g_assert_not_reached();
}
}
}
@@ -5513,6 +5528,12 @@ static void disas_fp_int_conv(DisasContext *s, uint32_t
insn)
case 0xa: /* 64 bit */
case 0xd: /* 64 bit to top half of quad */
break;
+ case 0x6: /* 16-bit float, 32-bit int */
+ case 0xe: /* 16-bit float, 64-bit int */
+ if (arm_dc_feature(s, ARM_FEATURE_V8_FP16)) {
+ break;
+ }
+ /* fallthru */
default:
/* all other sf/type/rmode combinations are invalid */
unallocated_encoding(s);
--
2.17.1
- [Qemu-devel] [PATCH 66/99] tcg: Limit the number of ops in a TB, (continued)
- [Qemu-devel] [PATCH 66/99] tcg: Limit the number of ops in a TB, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 67/99] RISC-V: Minimal QEMU 2.12 fix for sifive_u machine, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 68/99] blockjob: expose error string via query, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 69/99] target/arm: Fix fp_status_f16 tininess before rounding, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 70/99] fpu/softfloat: Don't set Invalid for float-to-int(MAXINT), Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 06/99] tcg/arm: Fix memory barrier encoding, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 72/99] target/arm: Implement vector shifted FCVT for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 71/99] target/arm: Implement vector shifted SCVF/UCVF for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 73/99] target/arm: Fix float16 to/from int16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 74/99] target/arm: Clear SVE high bits for FMOV, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 76/99] target/arm: Implement FMOV (general) for fp16,
Michael Roth <=
- [Qemu-devel] [PATCH 77/99] target/arm: Implement FCVT (scalar, integer) for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 75/99] fpu/softfloat: Fix conversion from uint64 to float128, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 78/99] target/arm: Implement FCVT (scalar, fixed-point) for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 80/99] target/arm: Implement FP data-processing (2 source) for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 79/99] target/arm: Introduce and use read_fp_hreg, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 07/99] target/arm: Implement v8M VLLDM and VLSTM, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 81/99] target/arm: Implement FP data-processing (3 source) for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 84/99] target/arm: Implement FMOV (immediate) for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 83/99] target/arm: Implement FCSEL for fp16, Michael Roth, 2018/07/23
- [Qemu-devel] [PATCH 82/99] target/arm: Implement FCMP for fp16, Michael Roth, 2018/07/23