diff options
Diffstat (limited to 'sysdeps/unix/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysdep.h | 91 |
1 files changed, 72 insertions, 19 deletions
diff --git a/sysdeps/unix/sysdep.h b/sysdeps/unix/sysdep.h index 94a2ce0e37..29c39618c2 100644 --- a/sysdeps/unix/sysdep.h +++ b/sysdeps/unix/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1991-2016 Free Software Foundation, Inc. +/* Copyright (C) 1991-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -24,42 +24,95 @@ #define SYSCALL__(name, args) PSEUDO (__##name, name, args) #define SYSCALL(name, args) PSEUDO (name, name, args) -#define __SYSCALL0(name) \ +#define __SYSCALL_CONCAT_X(a,b) a##b +#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X (a, b) + + +#define __INTERNAL_SYSCALL0(name, err) \ + INTERNAL_SYSCALL (name, err, 0) +#define __INTERNAL_SYSCALL1(name, err, a1) \ + INTERNAL_SYSCALL (name, err, 1, a1) +#define __INTERNAL_SYSCALL2(name, err, a1, a2) \ + INTERNAL_SYSCALL (name, err, 2, a1, a2) +#define __INTERNAL_SYSCALL3(name, err, a1, a2, a3) \ + INTERNAL_SYSCALL (name, err, 3, a1, a2, a3) +#define __INTERNAL_SYSCALL4(name, err, a1, a2, a3, a4) \ + INTERNAL_SYSCALL (name, err, 4, a1, a2, a3, a4) +#define __INTERNAL_SYSCALL5(name, err, a1, a2, a3, a4, a5) \ + INTERNAL_SYSCALL (name, err, 5, a1, a2, a3, a4, a5) +#define __INTERNAL_SYSCALL6(name, err, a1, a2, a3, a4, a5, a6) \ + INTERNAL_SYSCALL (name, err, 6, a1, a2, a3, a4, a5, a6) +#define __INTERNAL_SYSCALL7(name, err, a1, a2, a3, a4, a5, a6, a7) \ + INTERNAL_SYSCALL (name, err, 7, a1, a2, a3, a4, a5, a6, a7) + +#define __INTERNAL_SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,o,...) o +#define __INTERNAL_SYSCALL_NARGS(...) \ + __INTERNAL_SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,) +#define __INTERNAL_SYSCALL_DISP(b,...) \ + __SYSCALL_CONCAT (b,__INTERNAL_SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__) + +/* Issue a syscall defined by syscall number plus any other argument required. + It is similar to INTERNAL_SYSCALL macro, but without the need to pass the + expected argument number as second parameter. */ +#define INTERNAL_SYSCALL_CALL(...) \ + __INTERNAL_SYSCALL_DISP (__INTERNAL_SYSCALL, __VA_ARGS__) + +#define __INLINE_SYSCALL0(name) \ INLINE_SYSCALL (name, 0) -#define __SYSCALL1(name, a1) \ +#define __INLINE_SYSCALL1(name, a1) \ INLINE_SYSCALL (name, 1, a1) -#define __SYSCALL2(name, a1, a2) \ +#define __INLINE_SYSCALL2(name, a1, a2) \ INLINE_SYSCALL (name, 2, a1, a2) -#define __SYSCALL3(name, a1, a2, a3) \ +#define __INLINE_SYSCALL3(name, a1, a2, a3) \ INLINE_SYSCALL (name, 3, a1, a2, a3) -#define __SYSCALL4(name, a1, a2, a3, a4) \ +#define __INLINE_SYSCALL4(name, a1, a2, a3, a4) \ INLINE_SYSCALL (name, 4, a1, a2, a3, a4) -#define __SYSCALL5(name, a1, a2, a3, a4, a5) \ +#define __INLINE_SYSCALL5(name, a1, a2, a3, a4, a5) \ INLINE_SYSCALL (name, 5, a1, a2, a3, a4, a5) -#define __SYSCALL6(name, a1, a2, a3, a4, a5, a6) \ +#define __INLINE_SYSCALL6(name, a1, a2, a3, a4, a5, a6) \ INLINE_SYSCALL (name, 6, a1, a2, a3, a4, a5, a6) -#define __SYSCALL7(name, a1, a2, a3, a4, a5, a6, a7) \ +#define __INLINE_SYSCALL7(name, a1, a2, a3, a4, a5, a6, a7) \ INLINE_SYSCALL (name, 7, a1, a2, a3, a4, a5, a6, a7) -#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,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 __INLINE_SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n +#define __INLINE_SYSCALL_NARGS(...) \ + __INLINE_SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,) +#define __INLINE_SYSCALL_DISP(b,...) \ + __SYSCALL_CONCAT (b,__INLINE_SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__) -#define __SYSCALL_CALL(...) __SYSCALL_DISP (__SYSCALL, __VA_ARGS__) +/* Issue a syscall defined by syscall number plus any other argument + required. Any error will be handled using arch defined macros and errno + will be set accordingly. + It is similar to INLINE_SYSCALL macro, but without the need to pass the + expected argument number as second parameter. */ +#define INLINE_SYSCALL_CALL(...) \ + __INLINE_SYSCALL_DISP (__INLINE_SYSCALL, __VA_ARGS__) #define SYSCALL_CANCEL(...) \ ({ \ long int sc_ret; \ if (SINGLE_THREAD_P) \ - sc_ret = __SYSCALL_CALL (__VA_ARGS__); \ + sc_ret = INLINE_SYSCALL_CALL (__VA_ARGS__); \ + else \ + { \ + int sc_cancel_oldtype = LIBC_CANCEL_ASYNC (); \ + sc_ret = INLINE_SYSCALL_CALL (__VA_ARGS__); \ + LIBC_CANCEL_RESET (sc_cancel_oldtype); \ + } \ + sc_ret; \ + }) + +/* Issue a syscall defined by syscall number plus any other argument + required. Any error will be returned unmodified (including errno). */ +#define INTERNAL_SYSCALL_CANCEL(...) \ + ({ \ + long int sc_ret; \ + if (SINGLE_THREAD_P) \ + sc_ret = INTERNAL_SYSCALL_CALL (__VA_ARGS__); \ else \ { \ int sc_cancel_oldtype = LIBC_CANCEL_ASYNC (); \ - sc_ret = __SYSCALL_CALL (__VA_ARGS__); \ + sc_ret = INTERNAL_SYSCALL_CALL (__VA_ARGS__); \ LIBC_CANCEL_RESET (sc_cancel_oldtype); \ } \ sc_ret; \ |