forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
152 lines
3.6 KiB
C
152 lines
3.6 KiB
C
#ifndef _LINUX_LINKAGE_H
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#define _LINUX_LINKAGE_H
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#include <linux/compiler.h>
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#include <linux/stringify.h>
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#include <linux/export.h>
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#include <asm/linkage.h>
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#include <asm/bitsperlong.h>
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/* Some toolchains use other characters (e.g. '`') to mark new line in macro */
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#ifndef ASM_NL
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#define ASM_NL ;
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#endif
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#ifdef __cplusplus
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#define CPP_ASMLINKAGE extern "C"
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#else
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#define CPP_ASMLINKAGE
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#endif
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#ifndef asmlinkage
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#define asmlinkage CPP_ASMLINKAGE
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#endif
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#ifndef cond_syscall
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# ifdef CONFIG_PAX_RAP
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# define rap_cond_syscall(x) \
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".weak " VMLINUX_SYMBOL_STR(rap_##x) "\n\t" \
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".set " VMLINUX_SYMBOL_STR(rap_##x) "," \
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VMLINUX_SYMBOL_STR(rap_sys_ni_syscall) "\n\t"
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# else
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# define rap_cond_syscall(x)
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# endif
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#define cond_syscall(x) asm( \
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rap_cond_syscall(x) \
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".weak " VMLINUX_SYMBOL_STR(x) "\n\t" \
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".set " VMLINUX_SYMBOL_STR(x) "," \
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VMLINUX_SYMBOL_STR(sys_ni_syscall))
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#endif
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#ifndef SYSCALL_ALIAS
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#define SYSCALL_ALIAS(alias, name) asm( \
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".globl " VMLINUX_SYMBOL_STR(alias) "\n\t" \
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".set " VMLINUX_SYMBOL_STR(alias) "," \
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VMLINUX_SYMBOL_STR(name))
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#endif
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#define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE)
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#define __page_aligned_rodata __read_only __aligned(PAGE_SIZE)
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#define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE)
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/*
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* For assembly routines.
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*
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* Note when using these that you must specify the appropriate
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* alignment directives yourself
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*/
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#define __PAGE_ALIGNED_DATA .section ".data..page_aligned", "aw"
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#define __PAGE_ALIGNED_BSS .section ".bss..page_aligned", "aw"
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/*
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* This is used by architectures to keep arguments on the stack
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* untouched by the compiler by keeping them live until the end.
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* The argument stack may be owned by the assembly-language
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* caller, not the callee, and gcc doesn't always understand
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* that.
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*
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* We have the return value, and a maximum of six arguments.
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*
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* This should always be followed by a "return ret" for the
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* protection to work (ie no more work that the compiler might
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* end up needing stack temporaries for).
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*/
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/* Assembly files may be compiled with -traditional .. */
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#ifndef __ASSEMBLY__
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#ifndef asmlinkage_protect
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# define asmlinkage_protect(n, ret, args...) do { } while (0)
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#endif
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#endif
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#ifndef __ALIGN
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#define __ALIGN .align 4,0x90
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#define __ALIGN_STR ".align 4,0x90"
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#endif
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#ifdef CONFIG_PAX_RAP
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# if BITS_PER_LONG == 64
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# define __ASM_RAP_HASH(hash) .quad 0, hash
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# define __ASM_RAP_RET_HASH(hash) .quad hash
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# elif BITS_PER_LONG == 32
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# define __ASM_RAP_HASH(hash) .long 0, hash
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# define __ASM_RAP_RET_HASH(hash) .long hash
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# else
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# error incompatible BITS_PER_LONG
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# endif
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#endif
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#ifdef __ASSEMBLY__
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#ifndef LINKER_SCRIPT
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#define ALIGN __ALIGN
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#define ALIGN_STR __ALIGN_STR
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#ifndef ENTRY
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#define __ENTRY(name, rap_hash) \
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.globl name ASM_NL \
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ALIGN ASM_NL \
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rap_hash \
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name:
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#define ENTRY(name) __ENTRY(name,)
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#endif
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#endif /* LINKER_SCRIPT */
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#ifndef WEAK
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#define __WEAK(name, rap_hash) \
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.weak name ASM_NL \
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rap_hash \
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name:
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#define WEAK(name) __WEAK(name, )
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#endif
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#ifdef CONFIG_PAX_RAP
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# define RAP_ENTRY(name) __ENTRY(name, __ASM_RAP_HASH(__rap_hash_call_##name) ASM_NL)
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# define RAP_WEAK(name) __WEAK(name, __ASM_RAP_HASH(__rap_hash_call_##name) ASM_NL)
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#else
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# define RAP_ENTRY(name) ENTRY(name)
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# define RAP_WEAK(name) WEAK(name)
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#endif
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#ifndef END
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#define END(name) \
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.size name, .-name
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#endif
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/* If symbol 'name' is treated as a subroutine (gets called, and returns)
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* then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of
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* static analysis tools such as stack depth analyzer.
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*/
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#ifndef ENDPROC
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#define ENDPROC(name) \
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.type name, @function ASM_NL \
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END(name)
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#endif
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#endif
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#endif
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