From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions 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 --- arch/arm/lib/io-writesl.S | 64 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 arch/arm/lib/io-writesl.S (limited to 'arch/arm/lib/io-writesl.S') diff --git a/arch/arm/lib/io-writesl.S b/arch/arm/lib/io-writesl.S new file mode 100644 index 000000000..89ef7be61 --- /dev/null +++ b/arch/arm/lib/io-writesl.S @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/arch/arm/lib/io-writesl.S + * + * Copyright (C) 1995-2000 Russell King + */ +#include +#include + +ENTRY(__raw_writesl) + teq r2, #0 @ do we have to check for the zero len? + reteq lr + ands ip, r1, #3 + bne 3f + + subs r2, r2, #4 + bmi 2f + stmfd sp!, {r4, lr} +1: ldmia r1!, {r3, r4, ip, lr} + subs r2, r2, #4 + str r3, [r0, #0] + str r4, [r0, #0] + str ip, [r0, #0] + str lr, [r0, #0] + bpl 1b + ldmfd sp!, {r4, lr} +2: movs r2, r2, lsl #31 + ldmiacs r1!, {r3, ip} + strcs r3, [r0, #0] + ldrne r3, [r1, #0] + strcs ip, [r0, #0] + strne r3, [r0, #0] + ret lr + +3: bic r1, r1, #3 + ldr r3, [r1], #4 + cmp ip, #2 + blt 5f + bgt 6f + +4: mov ip, r3, lspull #16 + ldr r3, [r1], #4 + subs r2, r2, #1 + orr ip, ip, r3, lspush #16 + str ip, [r0] + bne 4b + ret lr + +5: mov ip, r3, lspull #8 + ldr r3, [r1], #4 + subs r2, r2, #1 + orr ip, ip, r3, lspush #24 + str ip, [r0] + bne 5b + ret lr + +6: mov ip, r3, lspull #24 + ldr r3, [r1], #4 + subs r2, r2, #1 + orr ip, ip, r3, lspush #8 + str ip, [r0] + bne 6b + ret lr +ENDPROC(__raw_writesl) -- cgit v1.3.1