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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/arm/probes/decode-thumb.h
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/arm/probes/decode-thumb.h')
-rw-r--r--arch/arm/probes/decode-thumb.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/probes/decode-thumb.h b/arch/arm/probes/decode-thumb.h
new file mode 100644
index 000000000..84b445b8a
--- /dev/null
+++ b/arch/arm/probes/decode-thumb.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * arch/arm/probes/decode-thumb.h
+ *
+ * Copyright 2013 Linaro Ltd.
+ * Written by: David A. Long
+ */
+
+#ifndef _ARM_KERNEL_PROBES_THUMB_H
+#define _ARM_KERNEL_PROBES_THUMB_H
+
+#include "decode.h"
+
+/*
+ * True if current instruction is in an IT block.
+ */
+#define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000)
+
+/*
+ * Return the condition code to check for the currently executing instruction.
+ * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if
+ * in_it_block returns true.
+ */
+#define current_cond(cpsr) ((cpsr >> 12) & 0xf)
+
+enum probes_t32_action {
+ PROBES_T32_EMULATE_NONE,
+ PROBES_T32_SIMULATE_NOP,
+ PROBES_T32_LDMSTM,
+ PROBES_T32_LDRDSTRD,
+ PROBES_T32_TABLE_BRANCH,
+ PROBES_T32_TST,
+ PROBES_T32_CMP,
+ PROBES_T32_MOV,
+ PROBES_T32_ADDSUB,
+ PROBES_T32_LOGICAL,
+ PROBES_T32_ADDWSUBW_PC,
+ PROBES_T32_ADDWSUBW,
+ PROBES_T32_MOVW,
+ PROBES_T32_SAT,
+ PROBES_T32_BITFIELD,
+ PROBES_T32_SEV,
+ PROBES_T32_WFE,
+ PROBES_T32_MRS,
+ PROBES_T32_BRANCH_COND,
+ PROBES_T32_BRANCH,
+ PROBES_T32_PLDI,
+ PROBES_T32_LDR_LIT,
+ PROBES_T32_LDRSTR,
+ PROBES_T32_SIGN_EXTEND,
+ PROBES_T32_MEDIA,
+ PROBES_T32_REVERSE,
+ PROBES_T32_MUL_ADD,
+ PROBES_T32_MUL_ADD2,
+ PROBES_T32_MUL_ADD_LONG,
+ NUM_PROBES_T32_ACTIONS
+};
+
+enum probes_t16_action {
+ PROBES_T16_ADD_SP,
+ PROBES_T16_CBZ,
+ PROBES_T16_SIGN_EXTEND,
+ PROBES_T16_PUSH,
+ PROBES_T16_POP,
+ PROBES_T16_SEV,
+ PROBES_T16_WFE,
+ PROBES_T16_IT,
+ PROBES_T16_CMP,
+ PROBES_T16_ADDSUB,
+ PROBES_T16_LOGICAL,
+ PROBES_T16_BLX,
+ PROBES_T16_HIREGOPS,
+ PROBES_T16_LDR_LIT,
+ PROBES_T16_LDRHSTRH,
+ PROBES_T16_LDRSTR,
+ PROBES_T16_ADR,
+ PROBES_T16_LDMSTM,
+ PROBES_T16_BRANCH_COND,
+ PROBES_T16_BRANCH,
+ NUM_PROBES_T16_ACTIONS
+};
+
+extern const union decode_item probes_decode_thumb32_table[];
+extern const union decode_item probes_decode_thumb16_table[];
+
+enum probes_insn __kprobes
+thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
+ bool emulate, const union decode_action *actions,
+ const struct decode_checker *checkers[]);
+enum probes_insn __kprobes
+thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
+ bool emulate, const union decode_action *actions,
+ const struct decode_checker *checkers[]);
+
+#endif