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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-06-29 15:11:06 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-06-29 15:11:06 +0100 |
| commit | dec6cf6b43a1e3b18626852064d1e6e863c9b681 (patch) | |
| tree | 55f03ad462ed1caad840061fba67d8058cd5cff5 | |
| parent | f6dbf62a7e3d00e9a1dcc7fe3e53b32c3ed93e24 (diff) | |
| download | qemu-dec6cf6b43a1e3b18626852064d1e6e863c9b681.zip qemu-dec6cf6b43a1e3b18626852064d1e6e863c9b681.tar.gz qemu-dec6cf6b43a1e3b18626852064d1e6e863c9b681.tar.bz2 | |
target/arm: Implement SVE prefetches
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180627043328.11531-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target/arm/sve.decode | 23 | ||||
| -rw-r--r-- | target/arm/translate-sve.c | 21 |
2 files changed, 44 insertions, 0 deletions
diff --git a/target/arm/sve.decode b/target/arm/sve.decode index 7d24c2b..80b955f 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -794,6 +794,29 @@ LD1RQ_zprr 1010010 .. 00 ..... 000 ... ..... ..... \ LD1RQ_zpri 1010010 .. 00 0.... 001 ... ..... ..... \ @rpri_load_msz nreg=0 +# SVE 32-bit gather prefetch (scalar plus 32-bit scaled offsets) +PRF 1000010 00 -1 ----- 0-- --- ----- 0 ---- + +# SVE 32-bit gather prefetch (vector plus immediate) +PRF 1000010 -- 00 ----- 111 --- ----- 0 ---- + +# SVE contiguous prefetch (scalar plus immediate) +PRF 1000010 11 1- ----- 0-- --- ----- 0 ---- + +# SVE contiguous prefetch (scalar plus scalar) +PRF_rr 1000010 -- 00 rm:5 110 --- ----- 0 ---- + +### SVE Memory 64-bit Gather Group + +# SVE 64-bit gather prefetch (scalar plus 64-bit scaled offsets) +PRF 1100010 00 11 ----- 1-- --- ----- 0 ---- + +# SVE 64-bit gather prefetch (scalar plus unpacked 32-bit scaled offsets) +PRF 1100010 00 -1 ----- 0-- --- ----- 0 ---- + +# SVE 64-bit gather prefetch (vector plus immediate) +PRF 1100010 -- 00 ----- 111 --- ----- 0 ---- + ### SVE Memory Store Group # SVE store predicate register diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 11541b1..c73c3fc 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -4303,3 +4303,24 @@ static bool trans_ST1_zprz(DisasContext *s, arg_ST1_zprz *a, uint32_t insn) cpu_reg_sp(s, a->rn), fn); return true; } + +/* + * Prefetches + */ + +static bool trans_PRF(DisasContext *s, arg_PRF *a, uint32_t insn) +{ + /* Prefetch is a nop within QEMU. */ + sve_access_check(s); + return true; +} + +static bool trans_PRF_rr(DisasContext *s, arg_PRF_rr *a, uint32_t insn) +{ + if (a->rm == 31) { + return false; + } + /* Prefetch is a nop within QEMU. */ + sve_access_check(s); + return true; +} |