diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2021-04-16 11:31:02 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-04-30 11:16:49 +0100 |
| commit | 28f3250306e52ae94df9faab93b9d0167fe6b587 (patch) | |
| tree | 1d1c656f826d02a34006350aab96edb8b7790402 /target/arm/translate-sve.c | |
| parent | 09641ef93112c45bc32cf86a4999d0e0532909c3 (diff) | |
| download | qemu-arm-28f3250306e52ae94df9faab93b9d0167fe6b587.tar.gz | |
target/arm: Replace MTEDESC ESIZE+TSIZE with SIZEM1
After recent changes, mte_checkN does not use ESIZE,
and mte_check1 never used TSIZE. We can combine the
two into a single field: SIZEM1.
Choose to pass size - 1 because size == 0 is never used,
our immediate need in mte_probe_int is for the address
of the last byte (ptr + size - 1), and since almost all
operations are powers of 2, this makes the immediate
constant one bit smaller.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210416183106.1516563-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/translate-sve.c')
| -rw-r--r-- | target/arm/translate-sve.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 0eefb61214..5179c1f836 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -4509,8 +4509,7 @@ static void do_mem_zpa(DisasContext *s, int zt, int pg, TCGv_i64 addr, desc = FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc = FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc = FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc = FIELD_DP32(desc, MTEDESC, ESIZE, 1 << msz); - desc = FIELD_DP32(desc, MTEDESC, TSIZE, mte_n << msz); + desc = FIELD_DP32(desc, MTEDESC, SIZEM1, (mte_n << msz) - 1); desc <<= SVE_MTEDESC_SHIFT; } else { addr = clean_data_tbi(s, addr); @@ -5189,7 +5188,7 @@ static void do_mem_zpz(DisasContext *s, int zt, int pg, int zm, desc = FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc = FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc = FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc = FIELD_DP32(desc, MTEDESC, ESIZE, 1 << msz); + desc = FIELD_DP32(desc, MTEDESC, SIZEM1, (1 << msz) - 1); desc <<= SVE_MTEDESC_SHIFT; } desc = simd_desc(vsz, vsz, desc | scale); |