gccgo_c.c (1526B)
1 // Copyright 2015 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build gccgo && !aix && !hurd 6 7 #include <errno.h> 8 #include <stdint.h> 9 #include <unistd.h> 10 11 #define _STRINGIFY2_(x) #x 12 #define _STRINGIFY_(x) _STRINGIFY2_(x) 13 #define GOSYM_PREFIX _STRINGIFY_(__USER_LABEL_PREFIX__) 14 15 // Call syscall from C code because the gccgo support for calling from 16 // Go to C does not support varargs functions. 17 18 struct ret { 19 uintptr_t r; 20 uintptr_t err; 21 }; 22 23 struct ret gccgoRealSyscall(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9) 24 __asm__(GOSYM_PREFIX GOPKGPATH ".realSyscall"); 25 26 struct ret 27 gccgoRealSyscall(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9) 28 { 29 struct ret r; 30 31 errno = 0; 32 r.r = syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9); 33 r.err = errno; 34 return r; 35 } 36 37 uintptr_t gccgoRealSyscallNoError(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9) 38 __asm__(GOSYM_PREFIX GOPKGPATH ".realSyscallNoError"); 39 40 uintptr_t 41 gccgoRealSyscallNoError(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9) 42 { 43 return syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9); 44 }