Return-path: Envelope-to: publicinbox@libre-riscv.org Delivery-date: Fri, 01 May 2020 03:10:03 +0100 Received: from localhost ([::1] helo=libre-riscv.org) by libre-soc.org with esmtp (Exim 4.89) (envelope-from ) id 1jUL7q-0000iI-Od; Fri, 01 May 2020 03:10:02 +0100 Received: from localhost ([127.0.0.1] helo=bugs.libre-soc.org) by libre-soc.org with esmtp (Exim 4.89) (envelope-from ) id 1jUL7o-0000i6-W4 for libre-riscv-dev@lists.libre-riscv.org; Fri, 01 May 2020 03:10:00 +0100 From: bugzilla-daemon@libre-soc.org To: libre-riscv-dev@lists.libre-riscv.org Date: Fri, 01 May 2020 02:10:01 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Libre-SOC's first SoC X-Bugzilla-Component: Source Code X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: lkcl@lkcl.net X-Bugzilla-Status: CONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: lkcl@lkcl.net X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: https://bugs.libre-soc.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Subject: [libre-riscv-dev] [Bug 296] idea: cyclic buffer between FUs and register file X-BeenThere: libre-riscv-dev@lists.libre-riscv.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Libre-RISCV General Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Libre-RISCV General Development Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: libre-riscv-dev-bounces@lists.libre-riscv.org Sender: "libre-riscv-dev" aHR0cHM6Ly9idWdzLmxpYnJlLXNvYy5vcmcvc2hvd19idWcuY2dpP2lkPTI5NgoKLS0tIENvbW1l bnQgIzEgZnJvbSBMdWtlIEtlbm5ldGggQ2Fzc29uIExlaWdodG9uIDxsa2NsQGxrY2wubmV0PiAt LS0KYW4gaWRlYSBmb3IgYSBjeWNsaWMgaG9wcGVyOgoKaGVyZSBpcyBhbiAKCmh0dHBzOi8vZ3Jv dXBzLmdvb2dsZS5jb20vZC9tc2cvY29tcC5hcmNoL3FlTXNFN1V4dmxJLzZudnJ0bUJvQVFBSgoK PiBTaW5jZSB5b3Ugc2VwYXJhdGVkIHRoZSBzaWduYWxzLCBjYW4gSSBzdWdnZXN0IHBsYWNpbmcg YSBob3BwZXIgYmV0d2VlbiAKPiByZWFkaW5nIHJlZ2lzdGVyIHNwZWNpZmllcnMgb3V0IG9mIEZV cyBhbmQgdGhlIFJGIHBvcnRzLiBFYWNoIGN5Y2xlIGEgCj4gbnVtYmVyIG9mIHNwZWNpZmllcnMg YXJlIGRyb3BwZWQgaW50byB0aGUgaG9wcGVyLCBhbmQgZWFjaCBjeWNsZSBhcyBtYW55IAo+IFJG IHJlYWQgcG9ydHMgYXMgeW91IGhhdmUgYXJlIHJlYWQgYW5kIHRoZW4gZGVsaXZlcmVkIHRvIGlu c3RydWN0aW9ucyAKPiBhdCB0aGUgY2FsY3VsYXRpb24gdW5pdHMuIFRoZW4gZWFjaCBjYWxjdWxh dGlvbiB1bml0IHBpY2tzIGluc3RydWN0aW9ucyAKPiBpbnRvIGV4ZWN1dGlvbi4gCgoqc2lnaCog dW5mb3J0dW5hdGVseSB3ZSBhcmUgYSBsaXR0bGUgYml0IGhhbXN0cnVuZyBieSBoYXZpbmcgbG9z dCB0aGUgcmVnaXN0ZXIgCmJpbmFyeSBpbmRpY2VzLCB1c2luZyBpbnN0ZWFkIHRoZSBEZXBlbmRl bmN5IE1hdHJpeCB1bmFyeSBlbmNvZGluZyB0byAKZGlyZWN0bHkgZW5hYmxlIHRoZSByZWdmaWxl IHJvdy4gIGkgbWVhbiwgd2UgX2NvdWxkXyB1c2UgdGhlIHVuYXJ5IGVuY29kaW5nIAphcyB0aGUg cmVnaXN0ZXIgc3BlY2lmaWVyLi4uIAoKYnkgImhvcHBlciIgZG8gaSB0YWtlIGl0IHRoYXQgeW91 IG1lYW4gYSBjeWNsaWMgc2hpZnQgcmVnaXN0ZXIgd2hlcmUgZWFjaCAKYnVja2V0IGNvbnRhaW5z IHRoZSByZWdpc3RlciBzcGVjaWZpZXIsIHR5cGUgb2Ygb3BlcmF0aW9uIChSL1cpLCBhbmQsIHNh eSwgdGhlCkZVIApudW1iZXI/IAoKb3IsIGFjdHVhbGx5LCBpZiB0aGUgcmVnaXN0ZXIgc3BlY2lm aWVyIGlzIGluIHVuYXJ5Li4uIAoKb28gaSBoYXZlIGFuIGlkZWEuICBpdCBtYXkgd2VsbCBiZSB0 aGUgc2FtZSBpZGVhLiAKCiogZm9yIGFsbCByZWdpc3RlcnMgYmVpbmcgcmVxdWVzdGVkIGJ5IGFs bCBGVXMsIG1lcmdlIHRoZSB1bmFyeSByZWdpc3RlcgppbmRpY2VzIAogICBpbnRvIGEgc2luZ2xl ICJ0aGVzZSByZWdpc3RlcnMgbmVlZCB0byBiZSByZWFkIiB2ZWN0b3IuICBpIHRoaW5rLCBpbiBm YWN0LAp0aGF0IAogICB0aGUgRGVwZW5kZW5jeSBNYXRyaWNlcyBtaWdodCBhY3R1YWxseSBoYXZl IHRoaXMgYWxyZWFkeSAoUmVhZCBWZWN0b3IgCiAgIGFuZCBXcml0ZSBWZWN0b3IgUGVuZGluZykg CgoqIGZvciByZWFkcywgdGhyb3cgdGhhdCB2ZWN0b3IgYXQgYSByZWdmaWxlICJmZXRjaGVyIiwg d2hpY2gsIHVzaW5nIHRoZSByZWFkCnZlY3RvciwgCiAgc2ltcGx5IGZldGNoZXMgYXMgbWFueSBy ZWdpc3RlcnMgYXMgdGhlcmUgYXJlIGF2YWlsYWJsZSByZWdmaWxlIHBvcnRzIAoKICBsZXQncyBz YXkgdGhhdCB0aGVyZSBhcmUgNFIgcmVnZmlsZSBwb3J0cyAKCiogdGhlIDQgcmVhZCByZXN1bHRz LCBhbG9uZyB3aXRoIGEgKnNpbmdsZSogYml0IHVuYXJ5IGVuY29kaW5nIG9mIHRoZWlyCmNvcnJl c3BvbmRpbmcgCiAgcmVnIG51bWJlciwgYXJlIGRyb3BwZWQgaW50byBhIGN5Y2xpYyA0LXdpZGUg YnVmZmVyIChjeWNsaWMgNC13aWRlIHNoaWZ0IHJlZykgCgoqIGFsbCBGVXMgIkdvUmVhZDEiIGFy ZSBjb25uZWN0ZWQgdG8gcG9ydCAxIG9mIHRoZSBjeWNsaWMgYnVmZmVyIAoqIGFsbCBGVXMgIkdv UmVhZDIiIGFyZSBjb25uZWN0ZWQgdG8gcG9ydCAyLi4uIAoqIC4uLi4uLi4uLi4uLkdvUmVhZDMg Li4uLi4gMyAKCiogZW50cmllcyAqcmVtYWluKiBpbiB0aGUgY3ljbGljIGJ1ZmZlciBmb3IgYXMg bG9uZyBhcyB0aGUgY29ycmVzcG9uZGluZyBiaXQgaW4KdGhlIAogICBSZWFkIFZlY3RvciByZW1h aW5zIHNldCwgY29udGludWluZyB0byBjeWNsZSB0aHJvdWdoLCBtb3ZpbmcgZnJvbSBwb3J0IDEg dG8gCiAgIDIsIDIgdG8gMywgMyB0byA0LCA0IGJhY2sgdG8gMSwgb24gZWFjaCBjbG9jayAKCiog b24gYW55IGdpdmVuIGNsb2NrIGN5Y2xlLCAqYWxsKiBGVXMgbWF5IHJlYWQgdGhhdCAiYnJvYWRj YXN0ZWQiIGVudHJ5IGZyb20KdGhlaXIgCiAgIGNvcnJlc3BvbmRpbmcgY3ljbGljIGJ1ZmZlciAi aG9wcGVyIiwgYXMgbG9uZyBhcyB0aGUgdW5hcnkgcmVnIGluZGV4IG1hdGNoZXMKdXAgCgoqIHdo ZW4gdGhlIHJlZyBpbmRleCBtYXRjaGVzIHVwLCBHT19SRDEvMi8zIGlzIGZpcmVkIGF0IHRoYXQg RlUuIAoKKiB3aGVuIHRoZSBGVSBoYXMgcmVhZCBmcm9tIHRoYXQgcG9ydCwgaXQgbWF5IGRyb3Ag dGhlIFJFUV9SRDEvMi8zIAoKKiB0aGlzIHJlc3VsdHMgaW4gdGhlICh1c3VhbCkgZHJvcHBpbmcg b2YgdGhlIHVuYXJ5IGJpdCBmcm9tIHRoZSBSZWFkIFZlY3RvcgpiYWNrIGF0IAogICB0aGUgRGVw ZW5kZW5jeSBNYXRyaXggCgoqIHRoaXMgaW4gdHVybiBhbHNvIHRyaWdnZXJzIHRoZSBjeWNsaWMg YnVmZmVyIHRvIGRyb3AgdGhlIHJlZyB2YWx1ZSwgZnJlZWluZwp1cCB0aGF0IAogICBwb3J0IGZv ciBhIHJlZmlsbCBvcHBvcnR1bml0eS4gCgppdCdzIGJ5IG5vIG1lYW5zIHBlcmZlY3Q6IHRoZSBj eWNsaWMgYnVmZmVyIG1vdmluZyBvbmx5IG9uZSB2YWx1ZSBhdCBhIHRpbWUKbWVhbnMgCnRoYXQg aWYgYW4gRlUgaGFzIDMgR09fUkQvUkVRX1JEIGxpbmVzLCBpdCBjb3VsZCBoYXZlIHRvIHdhaXQg Zm9yIHVwIHRvIDMKY3ljbGVzIApmb3IgdGhlIGRhdGEgdG8gY3ljbGUgcm91bmQgdGhlIHNoaWZ0 LWJ1ZmZlci4uLiAqcGVyIHJlYWQtcmVnaXN0ZXIqLiAKCmlmIGhvd2V2ZXIgYSBjb25jZXJ0ZWQg ZWZmb3J0IGlzIG1hZGUgdG8gZW5zdXJlIHRoYXQgYSBSRVFfUkQxIGFsd2F5cyB0cmllcyB0bwpk cm9wIAp0aGUgcmVhZC1yZXF1ZXN0IGludG8gY3ljbGljLWJ1ZmZlciBlbnRyeSAxLCBSRVFfUkQy IGFsd2F5cyB0cmllcyB0byBkcm9wIGludG8KZW50cnkgMiAKYW5kIHNvIG9uLCB0aGVuIHRoZSBy ZWFkcyBzaG91bGQganVzdCBwYXNzIHN0cmFpZ2h0IHRocm91Z2guIAoKdGhpcyBkb2VzIGhhdmUg dGhlIGFkdmFudGFnZSB0aGF0IGlmIHRoZXJlIGFyZSBtdWx0aXBsZSBGVXMgd2FpdGluZyBmb3Ig dGhlCnNhbWUgCnJlZ2lzdGVyLCB0aGVuIGFzIGEgImJyb2FkY2FzdCIgYnVzIHN5c3RlbSwgdGhl eSBjYW4gaW4gZmFjdCBnZXQgdGhlIHNhbWUgdmFsdWUgCnNpbXVsdGFuZW91c2x5LiAKCndyaXRl cyBhcmUgdmVyeSBzaW1pbGFyLCBhbmQgdGhlcmUgaXMgdGhlIGFkZGl0aW9uYWwgYWR2YW50YWdl IHRoYXQgdGhlIHdyaXR0ZW4KdmFsdWUgCmNhbiBiZSByZWFkIGZyb20gdGhlIGN5Y2xpYyBidWZm ZXIgYnkgYW55IEZVIHRoYXQgInNlZXMiIGl0LCBwcmlvciB0byB0aGUgdmFsdWUKbGFuZGluZyAK YXQgdGhlIGFjdHVhbCByZWdmaWxlLiAKCnRodXMgdGhlIGN5Y2xpYyBidWZmZXIgYWxzbyBoYXBw ZW5zIHRvIHNlcnZlIGRvdWJsZS1kdXR5IGFzIGEgZm9yd2FyZGluZyBidXMuIApvciwgCm1vcmUg dG8gdGhlIHBvaW50LCB0aGUgcm9sZSBhbmQgZGlzdGluY3Rpb24gYmV0d2VlbiAicmVnaXN0ZXIg YnVzIiBhbmQKImZvcndhcmRpbmcgCmJ1cyIgaXMgbm93IGRlY291cGxlZCAvIG1vb3QuIAoKd2Fz IHRoYXQgc29ydC1vZiB3aGF0IHlvdSBtZWFudCBieSAiaG9wcGVyIj8gOikgCgpsLgoKLS0gCllv dSBhcmUgcmVjZWl2aW5nIHRoaXMgbWFpbCBiZWNhdXNlOgpZb3UgYXJlIG9uIHRoZSBDQyBsaXN0 IGZvciB0aGUgYnVnLgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpsaWJyZS1yaXNjdi1kZXYgbWFpbGluZyBsaXN0CmxpYnJlLXJpc2N2LWRldkBsaXN0cy5s aWJyZS1yaXNjdi5vcmcKaHR0cDovL2xpc3RzLmxpYnJlLXJpc2N2Lm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2xpYnJlLXJpc2N2LWRldgo=