在kernel\xiaomi\sm8250\arch\arm64\kernel\syscall.c下,我复制一段关键代码。 asmlinkage void el0_svc_handler(struct pt_regs *regs) { sve_user_discard(); el0_svc_common(regs, regs->regs[8], __NR_syscalls, sys_call_table); } static void el0_svc_common(struct pt_regs *regs, int sc...
调用syscall会产生中断,在arm64的汇编是svc,中断产生异常后,进入svc handler。 在kernel\xiaomi\sm8250\arch\arm64\kernel\syscall.c下,我复制一段关键代码。 asmlinkagevoidel0_svc_handler(struct pt_regs *regs){sve_user_discard();el0_svc_common(...
//SyscallTable is a lookup table of system calls.///Note that a SyscallTable is not savable directly. Instead, they are saved as//an OS/Arch pair and lookup happens again on restore.type SyscallTablestruct{//OS is the operating system that this syscall table implements.OS abi.OS//Arch ...
View online https://hfiref0x.github.io/ARM64/w32ksyscalls.htmlUsageDump syscall table list (using scg for ntoskrnl or wscg64 for win32k), see run examples for more info. [Tables] <- put syscall list text file named as build number inside directory (ntos subdirectory for ntoskrnl.exe ...
syscall.PAGE_READONLY|syscall.SEC_IMAGE, 0, 0, nil) baseAddr, _ := syscall.MapViewOfFile(hMapping, syscall.FILE_MAP_READ, 0, 0, 0) return baseAddr, nil } func GetCleanSyscallAddr(baseAddr uintptr, apiName string) uintptr { // 解析PE结构获取函数地址 return parseExportTable(baseAddr...
总体流程:kill() -> kill.S -> swi陷入内核态 -> 从sys_call_table查看到sys_kill -> ret_fast_syscall -> 回到用户态执行kill()下一行代码。 下面介绍部分核心流程: 3.1: 用户程序通过软中断swi指令切入内核态,执行vector_swi处的指令。vector_swi在文件/kenel/arch/arm/kernel/entry-common.S中定义,此...
A Kernel module to break the kernel read-only to modify the syscall_table purpose (only in the Linux Arm64 6.6 Kernel test runs properly). linuxkernel-modulesyscall-tablesyscall-hook UpdatedFeb 2, 2025 C ultral/linux-keylogger Star12
在kernel层面,系统调用的总入口函数是x86_syscall,根据系统调用号,直接跳转到系统封调用表Lcall_wrapper_table总对应的系统调用函数。Lcall_wrapper_table是由宏 start_syscall_dispatch 和 syscall_dispatch来定义的,可参见文件: build-magenta-pc-x86-64/gen/include/magenta/syscalls-kernel-branches.S ...
__NR_arm_fadvise64_64# define SYS_arm_fadvise64_64 __NR_arm_fadvise64_64#endif#ifdef __NR_arm_sync_file_range# define SYS_arm_sync_file_range __NR_arm_sync_file_range#endif#ifdef __NR_atomic_barrier# define SYS_atomic_barrier __NR_atomic_barrier#endif#ifdef __NR_atomic_cmpxchg...
总体流程:kill() -> kill.S -> swi陷入内核态 -> 从sys_call_table查看到sys_kill -> ret_fast_syscall -> 回到用户态执行kill()下一行代码。 下面介绍部分核心流程: 3.1: 用户程序通过软中断swi指令切入内核态,执行vector_swi处的指令。vector_swi在文件/kenel/arch/arm/kernel/en...