1 //===---------- inline implementation of i386 syscalls ------------* C++ *-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #ifndef LLVM_LIBC_SRC___SUPPORT_OSUTIL_LINUX_I386_SYSCALL_H
10 #define LLVM_LIBC_SRC___SUPPORT_OSUTIL_LINUX_I386_SYSCALL_H
11
12 #include "src/__support/common.h"
13 #include "src/__support/macros/config.h"
14
15 namespace LIBC_NAMESPACE_DECL {
16
syscall_impl(long num)17 LIBC_INLINE long syscall_impl(long num) {
18 long ret;
19 LIBC_INLINE_ASM("int $128" : "=a"(ret) : "a"(num) : "memory");
20 return ret;
21 }
22
syscall_impl(long num,long arg1)23 LIBC_INLINE long syscall_impl(long num, long arg1) {
24 long ret;
25 LIBC_INLINE_ASM("int $128" : "=a"(ret) : "a"(num), "b"(arg1) : "memory");
26 return ret;
27 }
28
syscall_impl(long num,long arg1,long arg2)29 LIBC_INLINE long syscall_impl(long num, long arg1, long arg2) {
30 long ret;
31 LIBC_INLINE_ASM("int $128"
32 : "=a"(ret)
33 : "a"(num), "b"(arg1), "c"(arg2)
34 : "memory");
35 return ret;
36 }
37
syscall_impl(long num,long arg1,long arg2,long arg3)38 LIBC_INLINE long syscall_impl(long num, long arg1, long arg2, long arg3) {
39 long ret;
40 LIBC_INLINE_ASM("int $128"
41 : "=a"(ret)
42 : "a"(num), "b"(arg1), "c"(arg2), "d"(arg3)
43 : "memory");
44 return ret;
45 }
46
syscall_impl(long num,long arg1,long arg2,long arg3,long arg4)47 LIBC_INLINE long syscall_impl(long num, long arg1, long arg2, long arg3,
48 long arg4) {
49 long ret;
50 LIBC_INLINE_ASM("int $128"
51 : "=a"(ret)
52 : "a"(num), "b"(arg1), "c"(arg2), "d"(arg3), "S"(arg4)
53 : "memory");
54 return ret;
55 }
56
syscall_impl(long num,long arg1,long arg2,long arg3,long arg4,long arg5)57 LIBC_INLINE long syscall_impl(long num, long arg1, long arg2, long arg3,
58 long arg4, long arg5) {
59 long ret;
60 LIBC_INLINE_ASM("int $128"
61 : "=a"(ret)
62 : "a"(num), "b"(arg1), "c"(arg2), "d"(arg3), "S"(arg4),
63 "D"(arg5)
64 : "memory");
65 return ret;
66 }
67
syscall_impl(long num,long arg1,long arg2,long arg3,long arg4,long arg5,long arg6)68 LIBC_INLINE long syscall_impl(long num, long arg1, long arg2, long arg3,
69 long arg4, long arg5, long arg6) {
70 long ret;
71 LIBC_INLINE_ASM(R"(
72 push %[arg6]
73 push %%ebp
74 mov 4(%%esp), %%ebp
75 int $128
76 pop %%ebp
77 add $4, %%esp
78 )"
79 : "=a"(ret)
80 : "a"(num), "b"(arg1), "c"(arg2), "d"(arg3), "S"(arg4),
81 "D"(arg5), [arg6] "m"(arg6)
82 : "memory");
83 return ret;
84 }
85
86 } // namespace LIBC_NAMESPACE_DECL
87
88 #endif // LLVM_LIBC_SRC___SUPPORT_OSUTIL_LINUX_I386_SYSCALL_H
89