The branch main has been updated by mjg: URL: https://cgit.FreeBSD.org/src/commit/?id=ebc52eabdcc5971fee8eaf7e565cd5d970acbdbc
commit ebc52eabdcc5971fee8eaf7e565cd5d970acbdbc Author: Mateusz Guzik <[email protected]> AuthorDate: 2021-08-23 16:25:19 +0000 Commit: Mateusz Guzik <[email protected]> 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) */ _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
