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| author | Taylor Simpson <tsimpson@quicinc.com> | 2021-04-08 20:07:45 -0500 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-05-01 08:31:43 -0700 |
| commit | d934c16d8a1e0fb82fd4abfa54dcb5217430577c (patch) | |
| tree | 4f98424f1036f09e712d80be7ba95faf130c17ab /target/hexagon/gen_tcg.h | |
| parent | 85580a65577898288a29d849160601895979c661 (diff) | |
| download | qemu-d934c16d8a1e0fb82fd4abfa54dcb5217430577c.zip qemu-d934c16d8a1e0fb82fd4abfa54dcb5217430577c.tar.gz qemu-d934c16d8a1e0fb82fd4abfa54dcb5217430577c.tar.bz2 | |
Hexagon (target/hexagon) add F2_sfrecipa instruction
Rd32,Pe4 = sfrecipa(Rs32, Rt32)
Recripocal approx
Test cases in tests/tcg/hexagon/multi_result.c
FP exception tests added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-18-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/hexagon/gen_tcg.h')
| -rw-r--r-- | target/hexagon/gen_tcg.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h index a30048e..428a670 100644 --- a/target/hexagon/gen_tcg.h +++ b/target/hexagon/gen_tcg.h @@ -195,6 +195,27 @@ #define fGEN_TCG_S4_stored_locked(SHORTCODE) \ do { SHORTCODE; READ_PREG(PdV, PdN); } while (0) +/* + * Mathematical operations with more than one definition require + * special handling + */ + +/* + * Approximate reciprocal + * r3,p1 = sfrecipa(r0, r1) + * + * The helper packs the 2 32-bit results into a 64-bit value, + * so unpack them into the proper results. + */ +#define fGEN_TCG_F2_sfrecipa(SHORTCODE) \ + do { \ + TCGv_i64 tmp = tcg_temp_new_i64(); \ + gen_helper_sfrecipa(tmp, cpu_env, RsV, RtV); \ + tcg_gen_extrh_i64_i32(RdV, tmp); \ + tcg_gen_extrl_i64_i32(PeV, tmp); \ + tcg_temp_free_i64(tmp); \ + } while (0) + /* Floating point */ #define fGEN_TCG_F2_conv_sf2df(SHORTCODE) \ gen_helper_conv_sf2df(RddV, cpu_env, RsV) |