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1 | /* Copyright (C) 2012-2024 Free Software Foundation, Inc. |
---|---|
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #ifndef _LINUX_X32_SYSDEP_H |
19 | #define _LINUX_X32_SYSDEP_H 1 |
20 | |
21 | /* There is some commonality. */ |
22 | #include <sysdeps/unix/sysv/linux/x86_64/sysdep.h> |
23 | #include <sysdeps/x86_64/x32/sysdep.h> |
24 | |
25 | /* How to pass the off{64}_t argument on p{readv,writev}{64}. */ |
26 | #undef LO_HI_LONG |
27 | #define LO_HI_LONG(val) (val) |
28 | |
29 | #ifdef __ASSEMBLER__ |
30 | /* Zero-extend 32-bit unsigned long int arguments to 64 bits. */ |
31 | # undef ZERO_EXTEND_1 |
32 | # define ZERO_EXTEND_1 movl %edi, %edi; |
33 | # undef ZERO_EXTEND_2 |
34 | # define ZERO_EXTEND_2 movl %esi, %esi; |
35 | # undef ZERO_EXTEND_3 |
36 | # define ZERO_EXTEND_3 movl %edx, %edx; |
37 | # if SYSCALL_ULONG_ARG_1 == 4 || SYSCALL_ULONG_ARG_2 == 4 |
38 | # undef DOARGS_4 |
39 | # define DOARGS_4 movl %ecx, %r10d; |
40 | # else |
41 | # undef ZERO_EXTEND_4 |
42 | # define ZERO_EXTEND_4 movl %r10d, %r10d; |
43 | # endif |
44 | # undef ZERO_EXTEND_5 |
45 | # define ZERO_EXTEND_5 movl %r8d, %r8d; |
46 | # undef ZERO_EXTEND_6 |
47 | # define ZERO_EXTEND_6 movl %r9d, %r9d; |
48 | #else /* !__ASSEMBLER__ */ |
49 | # undef ARGIFY |
50 | /* Enforce zero-extension for pointers and array system call arguments. |
51 | For integer types, extend to int64_t (the full register) using a |
52 | regular cast, resulting in zero or sign extension based on the |
53 | signedness of the original type. */ |
54 | # define ARGIFY(X) \ |
55 | ({ \ |
56 | _Pragma ("GCC diagnostic push"); \ |
57 | _Pragma ("GCC diagnostic ignored \"-Wpointer-to-int-cast\""); \ |
58 | (__builtin_classify_type (X) == 5 \ |
59 | ? (uintptr_t) (X) : (int64_t) (X)); \ |
60 | _Pragma ("GCC diagnostic pop"); \ |
61 | }) |
62 | #endif /* __ASSEMBLER__ */ |
63 | |
64 | #endif /* linux/x86_64/x32/sysdep.h */ |
65 |
Warning: That file was not part of the compilation database. It may have many parsing errors.