summaryrefslogtreecommitdiffstats
path: root/arch/arc/lib/memcpy-700.S
diff options
context:
space:
mode:
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/arc/lib/memcpy-700.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>
Diffstat (limited to 'arch/arc/lib/memcpy-700.S')
-rw-r--r--arch/arc/lib/memcpy-700.S63
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arc/lib/memcpy-700.S b/arch/arc/lib/memcpy-700.S
new file mode 100644
index 000000000..f2e239e21
--- /dev/null
+++ b/arch/arc/lib/memcpy-700.S
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ */
+
+#include <linux/linkage.h>
+
+ENTRY_CFI(memcpy)
+ or r3,r0,r1
+ asl_s r3,r3,30
+ mov_s r5,r0
+ brls.d r2,r3,.Lcopy_bytewise
+ sub.f r3,r2,1
+ ld_s r12,[r1,0]
+ asr.f lp_count,r3,3
+ bbit0.d r3,2,.Lnox4
+ bmsk_s r2,r2,1
+ st.ab r12,[r5,4]
+ ld.a r12,[r1,4]
+.Lnox4:
+ lppnz .Lendloop
+ ld_s r3,[r1,4]
+ st.ab r12,[r5,4]
+ ld.a r12,[r1,8]
+ st.ab r3,[r5,4]
+.Lendloop:
+ breq r2,0,.Last_store
+ ld r3,[r5,0]
+#ifdef __LITTLE_ENDIAN__
+ add3 r2,-1,r2
+ ; uses long immediate
+ xor_s r12,r12,r3
+ bmsk r12,r12,r2
+ xor_s r12,r12,r3
+#else /* BIG ENDIAN */
+ sub3 r2,31,r2
+ ; uses long immediate
+ xor_s r3,r3,r12
+ bmsk r3,r3,r2
+ xor_s r12,r12,r3
+#endif /* ENDIAN */
+.Last_store:
+ j_s.d [blink]
+ st r12,[r5,0]
+
+ .balign 4
+.Lcopy_bytewise:
+ jcs [blink]
+ ldb_s r12,[r1,0]
+ lsr.f lp_count,r3
+ bhs_s .Lnox1
+ stb.ab r12,[r5,1]
+ ldb.a r12,[r1,1]
+.Lnox1:
+ lppnz .Lendbloop
+ ldb_s r3,[r1,1]
+ stb.ab r12,[r5,1]
+ ldb.a r12,[r1,2]
+ stb.ab r3,[r5,1]
+.Lendbloop:
+ j_s.d [blink]
+ stb r12,[r5,0]
+END_CFI(memcpy)