aboutsummaryrefslogtreecommitdiff
path: root/lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp')
-rw-r--r--lib/mlibc/sysdeps/linux/generic/cxx-syscall.hpp118
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);
- }
-}