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 --- tools/perf/util/genelf.h | 89 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 tools/perf/util/genelf.h (limited to 'tools/perf/util/genelf.h') diff --git a/tools/perf/util/genelf.h b/tools/perf/util/genelf.h new file mode 100644 index 000000000..9f0b875d6 --- /dev/null +++ b/tools/perf/util/genelf.h @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __GENELF_H__ +#define __GENELF_H__ + +#include + +/* genelf.c */ +int jit_write_elf(int fd, uint64_t code_addr, const char *sym, + const void *code, int csize, void *debug, int nr_debug_entries, + void *unwinding, uint64_t unwinding_header_size, uint64_t unwinding_size); +#ifdef HAVE_LIBDW_SUPPORT +/* genelf_debug.c */ +int jit_add_debug_info(Elf *e, uint64_t code_addr, void *debug, int nr_debug_entries); +#endif + +#if defined(__arm__) +#define GEN_ELF_ARCH EM_ARM +#define GEN_ELF_CLASS ELFCLASS32 +#elif defined(__aarch64__) +#define GEN_ELF_ARCH EM_AARCH64 +#define GEN_ELF_CLASS ELFCLASS64 +#elif defined(__x86_64__) +#define GEN_ELF_ARCH EM_X86_64 +#define GEN_ELF_CLASS ELFCLASS64 +#elif defined(__i386__) +#define GEN_ELF_ARCH EM_386 +#define GEN_ELF_CLASS ELFCLASS32 +#elif defined(__powerpc64__) +#define GEN_ELF_ARCH EM_PPC64 +#define GEN_ELF_CLASS ELFCLASS64 +#elif defined(__powerpc__) +#define GEN_ELF_ARCH EM_PPC +#define GEN_ELF_CLASS ELFCLASS32 +#elif defined(__sparc__) && defined(__arch64__) +#define GEN_ELF_ARCH EM_SPARCV9 +#define GEN_ELF_CLASS ELFCLASS64 +#elif defined(__sparc__) +#define GEN_ELF_ARCH EM_SPARC +#define GEN_ELF_CLASS ELFCLASS32 +#elif defined(__s390x__) +#define GEN_ELF_ARCH EM_S390 +#define GEN_ELF_CLASS ELFCLASS64 +#elif defined(__riscv) && __riscv_xlen == 64 +#define GEN_ELF_ARCH EM_RISCV +#define GEN_ELF_CLASS ELFCLASS64 +#elif defined(__riscv) && __riscv_xlen == 32 +#define GEN_ELF_ARCH EM_RISCV +#define GEN_ELF_CLASS ELFCLASS32 +#elif defined(__loongarch__) +#define GEN_ELF_ARCH EM_LOONGARCH +#define GEN_ELF_CLASS ELFCLASS64 +#else +#error "unsupported architecture" +#endif + +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#define GEN_ELF_ENDIAN ELFDATA2MSB +#else +#define GEN_ELF_ENDIAN ELFDATA2LSB +#endif + +#if GEN_ELF_CLASS == ELFCLASS64 +#define elf_newehdr elf64_newehdr +#define elf_newphdr elf64_newphdr +#define elf_getshdr elf64_getshdr +#define Elf_Ehdr Elf64_Ehdr +#define Elf_Phdr Elf64_Phdr +#define Elf_Shdr Elf64_Shdr +#define Elf_Sym Elf64_Sym +#define ELF_ST_TYPE(a) ELF64_ST_TYPE(a) +#define ELF_ST_BIND(a) ELF64_ST_BIND(a) +#define ELF_ST_VIS(a) ELF64_ST_VISIBILITY(a) +#else +#define elf_newehdr elf32_newehdr +#define elf_newphdr elf32_newphdr +#define elf_getshdr elf32_getshdr +#define Elf_Ehdr Elf32_Ehdr +#define Elf_Phdr Elf32_Phdr +#define Elf_Shdr Elf32_Shdr +#define Elf_Sym Elf32_Sym +#define ELF_ST_TYPE(a) ELF32_ST_TYPE(a) +#define ELF_ST_BIND(a) ELF32_ST_BIND(a) +#define ELF_ST_VIS(a) ELF32_ST_VISIBILITY(a) +#endif + +/* The .text section is directly after the ELF header */ +#define GEN_ELF_TEXT_OFFSET round_up(sizeof(Elf_Ehdr) + sizeof(Elf_Phdr), 16) + +#endif -- cgit v1.3.1