diff options
Diffstat (limited to 'lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp')
-rw-r--r-- | lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp b/lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp deleted file mode 100644 index aa7d17c..0000000 --- a/lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp +++ /dev/null @@ -1,118 +0,0 @@ -#pragma once - -#include <errno.h> -#include <mlibc/tcb.hpp> -#include <mlibc/thread.hpp> -#include <mlibc-config.h> -#include <utility> - -#include <sys/syscall.h> -#include <bits/syscall.h> - -using sc_word_t = __sc_word_t; - -extern "C" { - extern sc_word_t __mlibc_do_asm_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, - sc_word_t arg3, sc_word_t arg4, sc_word_t arg5, sc_word_t arg6); - - extern void __mlibc_do_cancel(); -} - -namespace mlibc { - // C++ wrappers for the extern "C" functions. - inline sc_word_t do_nargs_syscall(int sc) { - return __do_syscall0(sc); - } - inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1) { - return __do_syscall1(sc, arg1); - } - inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2) { - return __do_syscall2(sc, arg1, arg2); - } - inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) { - return __do_syscall3(sc, arg1, arg2, arg3); - } - inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, - sc_word_t arg4) { - return __do_syscall4(sc, arg1, arg2, arg3, arg4); - } - inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, - sc_word_t arg4, sc_word_t arg5) { - return __do_syscall5(sc, arg1, arg2, arg3, arg4, arg5); - } - inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, - sc_word_t arg4, sc_word_t arg5, sc_word_t arg6) { - return __do_syscall6(sc, arg1, arg2, arg3, arg4, arg5, arg6); - } - - inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1) { - return __mlibc_do_asm_cp_syscall(sc, arg1, 0, 0, 0, 0, 0); - } - inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2) { - return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, 0, 0, 0, 0); - } - inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, - sc_word_t arg3) { - return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, 0, 0, 0); - } - inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, - sc_word_t arg4) { - return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, arg4, 0, 0); - } - inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, - sc_word_t arg4, sc_word_t arg5) { - return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, arg4, arg5, 0); - } - inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, - sc_word_t arg4, sc_word_t arg5, sc_word_t arg6) { - return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, arg4, arg5, arg6); - } - - // Type-safe syscall result type. - enum class sc_result_t : sc_word_t { }; - - // Cast to the argument type of the extern "C" functions. - inline sc_word_t sc_cast(long x) { return x; } - inline sc_word_t sc_cast(const void *x) { return reinterpret_cast<sc_word_t>(x); } - - template<typename... T> - sc_result_t do_syscall(int sc, T... args) { - return static_cast<sc_result_t>(do_nargs_syscall(sc, sc_cast(args)...)); - } - - inline int sc_error(sc_result_t ret) { - auto v = static_cast<sc_word_t>(ret); - if(static_cast<unsigned long>(v) > -4096UL) - return -v; - return 0; - } - - template<typename... T> - sc_result_t do_cp_syscall(int sc, T... args) { -#if __MLIBC_POSIX_OPTION && !MLIBC_BUILDING_RTDL - auto result = static_cast<sc_result_t>(do_nargs_cp_syscall(sc, sc_cast(args)...)); - if (int e = sc_error(result); e) { - auto tcb = reinterpret_cast<Tcb*>(get_current_tcb()); - if (tcb_cancelled(tcb->cancelBits) && e == EINTR) { - __mlibc_do_cancel(); - __builtin_unreachable(); - } - } - return result; -#else - return do_syscall(sc, std::forward<T>(args)...); -#endif // __MLIBC_POSIX_OPTION || !MLIBC_BUILDING_RTDL - } - // Cast from the syscall result type. - template<typename T> - T sc_int_result(sc_result_t ret) { - auto v = static_cast<sc_word_t>(ret); - return v; - } - - template<typename T> - T *sc_ptr_result(sc_result_t ret) { - auto v = static_cast<sc_word_t>(ret); - return reinterpret_cast<T *>(v); - } -} |