/* * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ #ifndef __SYSDEP_STUB_H #define __SYSDEP_STUB_H #include #include extern void stub_segv_handler(int sig); extern void stub_clone_handler(void); #define STUB_SYSCALL_RET EAX #define STUB_MMAP_NR __NR_mmap2 #define MMAP_OFFSET(o) ((o) >> PAGE_SHIFT) static inline long stub_syscall2(long syscall, long arg1, long arg2) { long ret; __asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx"); __asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx"); __asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax"); __asm__("int $0x80;" : : : "%eax"); __asm__ __volatile__("movl %%eax, %0; " : "=g" (ret) :); return(ret); } static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3) { __asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx"); return(stub_syscall2(syscall, arg1, arg2)); } static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3, long arg4) { __asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi"); return(stub_syscall3(syscall, arg1, arg2, arg3)); } static inline long stub_syscall6(long syscall, long arg1, long arg2, long arg3, long arg4, long arg5, long arg6) { long ret; __asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax"); __asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx"); __asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx"); __asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx"); __asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi"); __asm__("movl %0, %%edi; " : : "g" (arg5) : "%edi"); __asm__ __volatile__("pushl %%ebp ; movl %1, %%ebp; " "int $0x80; popl %%ebp ; " "movl %%eax, %0; " : "=g" (ret) : "g" (arg6) : "%eax"); return(ret); } static inline void trap_myself(void) { __asm("int3"); } #endif