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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/alpha/lib/udiv-qrnnd.S
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
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+ # Alpha 21064 __udiv_qrnnd
+ # Copyright (C) 1992, 1994, 1995, 2000 Free Software Foundation, Inc.
+
+ # This file is part of GCC.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # In addition to the permissions in the GNU General Public License, the
+ # Free Software Foundation gives you unlimited permission to link the
+ # compiled version of this file with other programs, and to distribute
+ # those programs without any restriction coming from the use of this
+ # file. (The General Public License restrictions do apply in other
+ # respects; for example, they cover modification of the file, and
+ # distribution when not linked into another program.)
+
+ # This file is distributed in the hope that it will be useful, but
+ # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU General Public License
+ # along with GCC; see the file COPYING. If not, write to the
+ # Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ # MA 02111-1307, USA.
+#include <linux/export.h>
+
+ .set noreorder
+ .set noat
+
+ .text
+
+ .globl __udiv_qrnnd
+ .ent __udiv_qrnnd
+__udiv_qrnnd:
+ .frame $30,0,$26,0
+ .prologue 0
+
+#define cnt $2
+#define tmp $3
+#define rem_ptr $16
+#define n1 $17
+#define n0 $18
+#define d $19
+#define qb $20
+#define AT $at
+
+ ldiq cnt,16
+ blt d,$largedivisor
+
+$loop1: cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule d,n1,qb
+ subq n1,d,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule d,n1,qb
+ subq n1,d,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule d,n1,qb
+ subq n1,d,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule d,n1,qb
+ subq n1,d,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ subq cnt,1,cnt
+ bgt cnt,$loop1
+ stq n1,0(rem_ptr)
+ bis $31,n0,$0
+ ret $31,($26),1
+
+$largedivisor:
+ and n0,1,$4
+
+ srl n0,1,n0
+ sll n1,63,tmp
+ or tmp,n0,n0
+ srl n1,1,n1
+
+ and d,1,$6
+ srl d,1,$5
+ addq $5,$6,$5
+
+$loop2: cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule $5,n1,qb
+ subq n1,$5,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule $5,n1,qb
+ subq n1,$5,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule $5,n1,qb
+ subq n1,$5,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ cmplt n0,0,tmp
+ addq n1,n1,n1
+ bis n1,tmp,n1
+ addq n0,n0,n0
+ cmpule $5,n1,qb
+ subq n1,$5,tmp
+ cmovne qb,tmp,n1
+ bis n0,qb,n0
+ subq cnt,1,cnt
+ bgt cnt,$loop2
+
+ addq n1,n1,n1
+ addq $4,n1,n1
+ bne $6,$Odd
+ stq n1,0(rem_ptr)
+ bis $31,n0,$0
+ ret $31,($26),1
+
+$Odd:
+ /* q' in n0. r' in n1 */
+ addq n1,n0,n1
+
+ cmpult n1,n0,tmp # tmp := carry from addq
+ subq n1,d,AT
+ addq n0,tmp,n0
+ cmovne tmp,AT,n1
+
+ cmpult n1,d,tmp
+ addq n0,1,AT
+ cmoveq tmp,AT,n0
+ subq n1,d,AT
+ cmoveq tmp,AT,n1
+
+ stq n1,0(rem_ptr)
+ bis $31,n0,$0
+ ret $31,($26),1
+
+ .end __udiv_qrnnd
+EXPORT_SYMBOL(__udiv_qrnnd)