Browse Extensions

xthead-vdot

1.0.0.xsil package

by extensilica

T-Head XTheadVdot vector dot-product (4x8-bit MAC into 32-bit elements)

No confirmed encoding conflictsShares encoding space with 11 extension(s)
Show encoding relation details

mojo-v INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-ba INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-bb INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-bs INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-condmov INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-fmemidx WARNING

  • PARTIAL_DECODE_OVERLAP: opcode 0x0B funct3 0x6 funct7 null — opcode and funct3 match, but the full mask isn't known (funct7/funct12 not imported). Possible overlap; needs full mask/match data to confirm.
  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-fmv INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-int INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-mac INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-mempair INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

xthead-sync INFO

  • SHARED_CUSTOM_SPACE: both declare custom-0; shared custom space (no per-vendor allocation in RISC-V). Not a conflict on its own — composing both needs opcode remapping or selective enable.

This versioned archive records the Extension's encoding, dependencies, provenance, documentation, and any simulator, toolchain, RTL, test, or hardware support declared by its maintainer.

Package metadata

Metadata is published by the package maintainer. Inspect the archive, upstream sources, and checksums before depending on declared support.

Required ISA
RV64IV_Xtheadvdot
Declared support
spike
Toolchain
riscv64-unknown-elf · v14.2.0 (external)
Capabilities
ISAToolchain: externalSim: SpikeTestsRepro: host-dependententrytestEntry
Resolution
host-dependent
Archive checksum
sha256:d4d12a90f657e6732a2a822bfee0cfe2538dd079f2903f18f4cb6708be4e7f5d
Payload checksum
sha256:06854673fd3c6947be590247379b7c63aa44bc3d074ce6ad2e430d9d915a2a92
Support metadata
{
  "spike": {
    "config": "sim/spike.yaml",
    "isa": "rv64gcv_xtheadvdot",
    "mem": "256m",
    "priv": "msu",
    "status": "skeleton"
  }
}
Dependencies
{
  "tools": []
}

README

T-Head XTheadVdot vector dot-product (4x8-bit MAC into 32-bit elements)

Version History

VersionPublishedStatus
1.0.0latest
xsil install [email protected]
May 14, 2026active

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07-1307-2007-2708-0308-1008-11

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1.0.0
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