//===-- sanitizer_syscall_linux_arm.inc -------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // Implementations of internal_syscall and internal_iserror for Linux/arm. // //===----------------------------------------------------------------------===// #define SYSCALL(name) __NR_ ## name static uptr __internal_syscall(u32 nr) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0"); asm volatile("swi #0" : "=r"(r0) : "r"(r8) : "memory", "cc"); return r0; } #define __internal_syscall0(n) \ (__internal_syscall)(n) static uptr __internal_syscall(u32 nr, u32 arg1) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0") = arg1; asm volatile("swi #0" : "=r"(r0) : "r"(r8), "0"(r0) : "memory", "cc"); return r0; } #define __internal_syscall1(n, a1) \ (__internal_syscall)(n, (u32)(a1)) static uptr __internal_syscall(u32 nr, u32 arg1, long arg2) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0") = arg1; register u32 r1 asm("r1") = arg2; asm volatile("swi #0" : "=r"(r0) : "r"(r8), "0"(r0), "r"(r1) : "memory", "cc"); return r0; } #define __internal_syscall2(n, a1, a2) \ (__internal_syscall)(n, (u32)(a1), (long)(a2)) static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0") = arg1; register u32 r1 asm("r1") = arg2; register u32 r2 asm("r2") = arg3; asm volatile("swi #0" : "=r"(r0) : "r"(r8), "0"(r0), "r"(r1), "r"(r2) : "memory", "cc"); return r0; } #define __internal_syscall3(n, a1, a2, a3) \ (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3)) static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3, u32 arg4) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0") = arg1; register u32 r1 asm("r1") = arg2; register u32 r2 asm("r2") = arg3; register u32 r3 asm("r3") = arg4; asm volatile("swi #0" : "=r"(r0) : "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3) : "memory", "cc"); return r0; } #define __internal_syscall4(n, a1, a2, a3, a4) \ (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4)) static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3, u32 arg4, long arg5) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0") = arg1; register u32 r1 asm("r1") = arg2; register u32 r2 asm("r2") = arg3; register u32 r3 asm("r3") = arg4; register u32 r4 asm("r4") = arg5; asm volatile("swi #0" : "=r"(r0) : "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4) : "memory", "cc"); return r0; } #define __internal_syscall5(n, a1, a2, a3, a4, a5) \ (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4), \ (u32)(a5)) static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3, u32 arg4, long arg5, long arg6) { register u32 r8 asm("r7") = nr; register u32 r0 asm("r0") = arg1; register u32 r1 asm("r1") = arg2; register u32 r2 asm("r2") = arg3; register u32 r3 asm("r3") = arg4; register u32 r4 asm("r4") = arg5; register u32 r5 asm("r5") = arg6; asm volatile("swi #0" : "=r"(r0) : "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5) : "memory", "cc"); return r0; } #define __internal_syscall6(n, a1, a2, a3, a4, a5, a6) \ (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4), \ (u32)(a5), (long)(a6)) #define __SYSCALL_NARGS_X(a1, a2, a3, a4, a5, a6, a7, a8, n, ...) n #define __SYSCALL_NARGS(...) \ __SYSCALL_NARGS_X(__VA_ARGS__, 7, 6, 5, 4, 3, 2, 1, 0, ) #define __SYSCALL_CONCAT_X(a, b) a##b #define __SYSCALL_CONCAT(a, b) __SYSCALL_CONCAT_X(a, b) #define __SYSCALL_DISP(b, ...) \ __SYSCALL_CONCAT(b, __SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__) #define internal_syscall(...) __SYSCALL_DISP(__internal_syscall, __VA_ARGS__) #define internal_syscall_ptr internal_syscall #define internal_syscall64 internal_syscall // Helper function used to avoid cobbler errno. bool internal_iserror(uptr retval, int *rverrno) { if (retval >= (uptr)-4095) { if (rverrno) *rverrno = -retval; return true; } return false; }