From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: mark.cave-ayland@ilande.co.uk
Subject: [PATCH v2 04/37] target/sparc: Fix helper_fmul8ulx16
Date: Sun, 26 May 2024 12:42:21 -0700 [thread overview]
Message-ID: <20240526194254.459395-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20240526194254.459395-1-richard.henderson@linaro.org>
This operation returns the high 16 bits of a 24-bit multiply
that has been sign-extended to 32 bits.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/sparc/vis_helper.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/target/sparc/vis_helper.c b/target/sparc/vis_helper.c
index f46fcf1f6a..41312deda4 100644
--- a/target/sparc/vis_helper.c
+++ b/target/sparc/vis_helper.c
@@ -174,10 +174,10 @@ uint64_t helper_fmul8ulx16(uint64_t src1, uint64_t src2)
s.ll = src1;
d.ll = src2;
- d.VIS_W64(0) = do_ms16b(s.VIS_B64(0), d.VIS_SW64(0));
- d.VIS_W64(1) = do_ms16b(s.VIS_B64(2), d.VIS_SW64(1));
- d.VIS_W64(2) = do_ms16b(s.VIS_B64(4), d.VIS_SW64(2));
- d.VIS_W64(3) = do_ms16b(s.VIS_B64(6), d.VIS_SW64(3));
+ d.VIS_W64(0) = (s.VIS_B64(0) * d.VIS_SW64(0) + 0x8000) >> 16;
+ d.VIS_W64(1) = (s.VIS_B64(2) * d.VIS_SW64(1) + 0x8000) >> 16;
+ d.VIS_W64(2) = (s.VIS_B64(4) * d.VIS_SW64(2) + 0x8000) >> 16;
+ d.VIS_W64(3) = (s.VIS_B64(6) * d.VIS_SW64(3) + 0x8000) >> 16;
return d.ll;
}
--
2.34.1
next prev parent reply other threads:[~2024-05-26 19:45 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-26 19:42 [PATCH v2 00/37] target/sparc: Implement VIS4 Richard Henderson
2024-05-26 19:42 ` [PATCH v2 01/37] target/sparc: Fix ARRAY8 Richard Henderson
2024-05-26 19:42 ` [PATCH v2 02/37] target/sparc: Rewrite gen_edge Richard Henderson
2024-05-26 19:42 ` [PATCH v2 03/37] target/sparc: Fix do_dc Richard Henderson
2024-06-04 11:41 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` Richard Henderson [this message]
2024-05-26 19:42 ` [PATCH v2 05/37] target/sparc: Perform DFPREG/QFPREG in decodetree Richard Henderson
2024-05-26 19:42 ` [PATCH v2 06/37] target/sparc: Remove gen_dest_fpr_D Richard Henderson
2024-05-26 19:42 ` [PATCH v2 07/37] target/sparc: Remove cpu_fpr[] Richard Henderson
2024-05-26 19:42 ` [PATCH v2 08/37] target/sparc: Use gvec for VIS1 parallel add/sub Richard Henderson
2024-06-04 13:18 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 09/37] target/sparc: Implement FMAf extension Richard Henderson
2024-05-26 19:42 ` [PATCH v2 10/37] target/sparc: Add feature bits for VIS 3 Richard Henderson
2024-05-26 19:42 ` [PATCH v2 11/37] target/sparc: Implement ADDXC, ADDXCcc Richard Henderson
2024-05-26 19:42 ` [PATCH v2 12/37] target/sparc: Implement CMASK instructions Richard Henderson
2024-06-04 13:30 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 13/37] target/sparc: Implement FCHKSM16 Richard Henderson
2024-06-05 8:07 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 14/37] target/sparc: Implement FHADD, FHSUB, FNHADD, FNADD, FNMUL Richard Henderson
2024-05-26 19:42 ` [PATCH v2 15/37] target/sparc: Implement FLCMP Richard Henderson
2024-05-26 19:42 ` [PATCH v2 16/37] target/sparc: Implement FMEAN16 Richard Henderson
2024-06-04 13:33 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 17/37] target/sparc: Implement FPADD64, FPSUB64 Richard Henderson
2024-05-26 19:42 ` [PATCH v2 18/37] target/sparc: Implement FPADDS, FPSUBS Richard Henderson
2024-06-05 8:04 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 19/37] target/sparc: Implement FPCMPEQ8, FPCMPNE8, FPCMPULE8, FPCMPUGT8 Richard Henderson
2024-06-05 7:57 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 20/37] target/sparc: Implement FSLL, FSRL, FSRA, FSLAS Richard Henderson
2024-06-04 13:38 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 21/37] target/sparc: Implement LDXEFSR Richard Henderson
2024-06-05 7:55 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 22/37] target/sparc: Implement LZCNT Richard Henderson
2024-05-26 19:42 ` [PATCH v2 23/37] target/sparc: Implement MOVsTOw, MOVdTOx, MOVwTOs, MOVxTOd Richard Henderson
2024-06-05 7:49 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 24/37] target/sparc: Implement PDISTN Richard Henderson
2024-05-26 19:42 ` [PATCH v2 25/37] target/sparc: Implement UMULXHI Richard Henderson
2024-06-04 13:40 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 26/37] target/sparc: Implement XMULX Richard Henderson
2024-06-04 13:41 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 27/37] target/sparc: Enable VIS3 feature bit Richard Henderson
2024-06-04 13:42 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 28/37] target/sparc: Implement IMA extension Richard Henderson
2024-05-26 19:42 ` [PATCH v2 29/37] target/sparc: Add feature bit for VIS4 Richard Henderson
2024-05-26 19:42 ` [PATCH v2 30/37] target/sparc: Implement FALIGNDATAi Richard Henderson
2024-06-05 7:35 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 31/37] target/sparc: Implement 8-bit FPADD, FPADDS, and FPADDUS Richard Henderson
2024-05-26 19:42 ` [PATCH v2 32/37] target/sparc: Implement VIS4 comparisons Richard Henderson
2024-06-05 7:10 ` Philippe Mathieu-Daudé
2024-05-26 19:42 ` [PATCH v2 33/37] target/sparc: Implement FPMIN, FPMAX Richard Henderson
2024-05-26 19:42 ` [PATCH v2 34/37] target/sparc: Implement SUBXC, SUBXCcc Richard Henderson
2024-05-26 19:42 ` [PATCH v2 35/37] target/sparc: Implement MWAIT Richard Henderson
2024-06-05 7:27 ` Philippe Mathieu-Daudé
2024-06-05 16:11 ` Richard Henderson
2024-05-26 19:42 ` [PATCH v2 36/37] target/sparc: Implement monitor ASIs Richard Henderson
2024-05-26 19:42 ` [PATCH v2 37/37] target/sparc: Enable VIS4 feature bit Richard Henderson
2024-05-28 21:29 ` [PATCH v2 00/37] target/sparc: Implement VIS4 Mark Cave-Ayland
2024-06-04 6:25 ` Mark Cave-Ayland
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