gccgo_c.c (1553B)
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 // +build gccgo,!aix,!hurd 7 8 #include <errno.h> 9 #include <stdint.h> 10 #include <unistd.h> 11 12 #define _STRINGIFY2_(x) #x 13 #define _STRINGIFY_(x) _STRINGIFY2_(x) 14 #define GOSYM_PREFIX _STRINGIFY_(__USER_LABEL_PREFIX__) 15 16 // Call syscall from C code because the gccgo support for calling from 17 // Go to C does not support varargs functions. 18 19 struct ret { 20 uintptr_t r; 21 uintptr_t err; 22 }; 23 24 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) 25 __asm__(GOSYM_PREFIX GOPKGPATH ".realSyscall"); 26 27 struct ret 28 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) 29 { 30 struct ret r; 31 32 errno = 0; 33 r.r = syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9); 34 r.err = errno; 35 return r; 36 } 37 38 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) 39 __asm__(GOSYM_PREFIX GOPKGPATH ".realSyscallNoError"); 40 41 uintptr_t 42 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) 43 { 44 return syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9); 45 }