forked from Qortal/Brooklyn
a94b3d14aa
Changes included (and more): 1. Dynamic RAM merge 2. Real-time page scan and allocation 3. Cache compression 4. Real-time IRQ checks 5. Dynamic I/O allocation for Java heap 6. Java page migration 7. Contiguous memory allocation 8. Idle pages tracking 9. Per CPU RAM usage tracking 10. ARM NEON scalar multiplication library 11. NEON/ARMv8 crypto extensions 12. NEON SHA, Blake, RIPEMD crypto extensions 13. Parallel NEON crypto engine for multi-algo based CPU stress reduction
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Clang Control Flow Integrity (CFI) support.
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*
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* Copyright (C) 2021 Google LLC
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*/
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#ifndef _LINUX_CFI_H
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#define _LINUX_CFI_H
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#ifdef CONFIG_CFI_CLANG
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typedef void (*cfi_check_fn)(uint64_t id, void *ptr, void *diag);
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/* Compiler-generated function in each module, and the kernel */
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extern void __cfi_check(uint64_t id, void *ptr, void *diag);
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/*
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* Force the compiler to generate a CFI jump table entry for a function
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* and store the jump table address to __cfi_jt_<function>.
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*/
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#define __CFI_ADDRESSABLE(fn, __attr) \
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const void *__cfi_jt_ ## fn __visible __attr = (void *)&fn
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#ifdef CONFIG_CFI_CLANG_SHADOW
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extern void cfi_module_add(struct module *mod, unsigned long base_addr);
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extern void cfi_module_remove(struct module *mod, unsigned long base_addr);
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#else
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static inline void cfi_module_add(struct module *mod, unsigned long base_addr) {}
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static inline void cfi_module_remove(struct module *mod, unsigned long base_addr) {}
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#endif /* CONFIG_CFI_CLANG_SHADOW */
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#else /* !CONFIG_CFI_CLANG */
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#ifdef CONFIG_X86_KERNEL_IBT
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#define __CFI_ADDRESSABLE(fn, __attr) \
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const void *__cfi_jt_ ## fn __visible __attr = (void *)&fn
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#endif /* CONFIG_X86_KERNEL_IBT */
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#endif /* CONFIG_CFI_CLANG */
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#ifndef __CFI_ADDRESSABLE
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#define __CFI_ADDRESSABLE(fn, __attr)
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#endif
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#endif /* _LINUX_CFI_H */
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