1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* Copyright (C) 1997-2015 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <stdarg.h>
#include <sysdep.h>
#include <errno.h>
extern int __syscall_error(int err_no);
extern long int syscall (long int __sysno, ...) __THROW;
/* This routine is jumped to by all the syscall handlers, to stash
an error number into errno. */
int
__syscall_error (int err_no)
{
__set_errno (err_no);
return -1;
}
/* HPPA implements syscall() in 'C'; the assembler version would
typically be in syscall.S. Also note that we have INLINE_SYSCALL,
INTERNAL_SYSCALL, and all the generated pure assembly syscall wrappers.
How often the function is used is unknown. */
long int
syscall (long int __sysno, ...)
{
/* FIXME: Keep this matching INLINE_SYSCALL for hppa */
va_list args;
long int arg0, arg1, arg2, arg3, arg4, arg5;
long int __sys_res;
/* Load varargs */
va_start (args, __sysno);
arg0 = va_arg (args, long int);
arg1 = va_arg (args, long int);
arg2 = va_arg (args, long int);
arg3 = va_arg (args, long int);
arg4 = va_arg (args, long int);
arg5 = va_arg (args, long int);
va_end (args);
{
register unsigned long int __res asm("r28");
PIC_REG_DEF
LOAD_ARGS_6 (arg0, arg1, arg2, arg3, arg4, arg5)
asm volatile (SAVE_ASM_PIC
" ble 0x100(%%sr2, %%r0) \n"
" copy %1, %%r20 \n"
LOAD_ASM_PIC
: "=r" (__res)
: "r" (__sysno) PIC_REG_USE ASM_ARGS_6
: "memory", CALL_CLOB_REGS CLOB_ARGS_6);
__sys_res = __res;
}
if ((unsigned long int) __sys_res >= (unsigned long int) -4095)
{
__set_errno (-__sys_res);
__sys_res = -1;
}
return __sys_res;
}
|
