From owner-dev-commits-src-all@freebsd.org Mon Aug 23 18:38:11 2021 Return-Path: Delivered-To: dev-commits-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1AE9966FBB9; Mon, 23 Aug 2021 18:38:11 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Gtgwg03Rvz4tqx; Mon, 23 Aug 2021 18:38:11 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id DD29A193DF; Mon, 23 Aug 2021 18:38:10 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 17NIcAub005962; Mon, 23 Aug 2021 18:38:10 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 17NIcAhM005961; Mon, 23 Aug 2021 18:38:10 GMT (envelope-from git) Date: Mon, 23 Aug 2021 18:38:10 GMT Message-Id: <202108231838.17NIcAhM005961@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Mateusz Guzik Subject: git: ebc52eabdcc5 - main - mips: retire bcmp MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: mjg X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: ebc52eabdcc5971fee8eaf7e565cd5d970acbdbc Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Aug 2021 18:38:11 -0000 The branch main has been updated by mjg: URL: https://cgit.FreeBSD.org/src/commit/?id=ebc52eabdcc5971fee8eaf7e565cd5d970acbdbc commit ebc52eabdcc5971fee8eaf7e565cd5d970acbdbc Author: Mateusz Guzik AuthorDate: 2021-08-23 16:25:19 +0000 Commit: Mateusz Guzik CommitDate: 2021-08-23 18:38:04 +0000 mips: retire bcmp Unused since ba96f37758412151 ("Use __builtin for various mem* and b* (e.g. bzero) routines.") Sponsored by: Rubicon Communications, LLC ("Netgate") --- sys/mips/mips/support.S | 80 ------------------------------------------------- 1 file changed, 80 deletions(-) diff --git a/sys/mips/mips/support.S b/sys/mips/mips/support.S index 13a2d32a156c..4cf1f750fdad 100644 --- a/sys/mips/mips/support.S +++ b/sys/mips/mips/support.S @@ -473,86 +473,6 @@ smallclr: nop END(bzero) - -/* - * bcmp(s1, s2, n) - */ -LEAF(bcmp) - .set noreorder - blt a2, 16, smallcmp # is it worth any trouble? - xor v0, a0, a1 # compare low two bits of addresses - and v0, v0, 3 - PTR_SUBU a3, zero, a1 # compute # bytes to word align address - bne v0, zero, unalignedcmp # not possible to align addresses - and a3, a3, 3 - - beq a3, zero, 1f - PTR_SUBU a2, a2, a3 # subtract from remaining count - move v0, v1 # init v0,v1 so unmodified bytes match - LWHI v0, 0(a0) # read 1, 2, or 3 bytes - LWHI v1, 0(a1) - PTR_ADDU a1, a1, a3 - bne v0, v1, nomatch - PTR_ADDU a0, a0, a3 -1: - and a3, a2, ~3 # compute number of whole words left - PTR_SUBU a2, a2, a3 # which has to be >= (16-3) & ~3 - PTR_ADDU a3, a3, a0 # compute ending address -2: - lw v0, 0(a0) # compare words - lw v1, 0(a1) - PTR_ADDU a0, a0, 4 - bne v0, v1, nomatch - PTR_ADDU a1, a1, 4 - bne a0, a3, 2b - nop - b smallcmp # finish remainder - nop -unalignedcmp: - beq a3, zero, 2f - PTR_SUBU a2, a2, a3 # subtract from remaining count - PTR_ADDU a3, a3, a0 # compute ending address -1: - lbu v0, 0(a0) # compare bytes until a1 word aligned - lbu v1, 0(a1) - PTR_ADDU a0, a0, 1 - bne v0, v1, nomatch - PTR_ADDU a1, a1, 1 - bne a0, a3, 1b - nop -2: - and a3, a2, ~3 # compute number of whole words left - PTR_SUBU a2, a2, a3 # which has to be >= (16-3) & ~3 - PTR_ADDU a3, a3, a0 # compute ending address -3: - LWHI v0, 0(a0) # compare words a0 unaligned, a1 aligned - LWLO v0, 3(a0) - lw v1, 0(a1) - PTR_ADDU a0, a0, 4 - bne v0, v1, nomatch - PTR_ADDU a1, a1, 4 - bne a0, a3, 3b - nop -smallcmp: - ble a2, zero, match - PTR_ADDU a3, a2, a0 # compute ending address -1: - lbu v0, 0(a0) - lbu v1, 0(a1) - PTR_ADDU a0, a0, 1 - bne v0, v1, nomatch - PTR_ADDU a1, a1, 1 - bne a0, a3, 1b - nop -match: - j ra - move v0, zero -nomatch: - j ra - li v0, 1 -END(bcmp) - - /* * bit = ffs(value) */