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/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <linux/x86/syscall.h>
#if !__TINYC__
// *INDENT-OFF*
long
__sys_call (long sys_call)
{
long r;
asm (
"mov r7, %1\n\t"
"swi $0\n\t"
"mov %0, r0\n\t"
: "=r" (r)
: "r" (sys_call)
: "r0", "r7"
);
return r;
}
#else //__TINYC__
long
__sys_call (long sys_call)
{
long r;
__asm__ (".int 0xe1a07000\n"); //mov r7, r0
// __asm__ (".int 0xe1a00001\n"); //mov r0, r1
// __asm__ (".int 0xe1a01002\n"); //mov r1, r2
// __asm__ (".int 0xe1a02003\n"); //mov r2, r3
// __asm__ (".int 0xe1a03004\n"); //mov r3, r4
__asm__ (".int 0xef000000\n"); //svc 0x00000000
__asm__ (".int 0xe50b0004\n"); //str r0, [fp, #-4]
return r;
}
#endif //__TINYC__
#if !__TINYC__
long
__sys_call1 (long sys_call, long one)
{
long r;
asm (
"mov r7, %1\n\t"
"mov r0, %2\n\t"
"swi $0\n\t"
"mov %0, r0\n\t"
: "=r" (r)
: "r" (sys_call), "r" (one)
: "r0", "r7"
);
return r;
}
#else //__TINYC__
long
__sys_call1 (long sys_call, long one)
{
long r;
__asm__ (".int 0xe1a07000\n"); //mov r7, r0
__asm__ (".int 0xe1a00001\n"); //mov r0, r1
// __asm__ (".int 0xe1a01002\n"); //mov r1, r2
// __asm__ (".int 0xe1a02003\n"); //mov r2, r3
// __asm__ (".int 0xe1a03004\n"); //mov r3, r4
__asm__ (".int 0xef000000\n"); //svc 0x00000000
__asm__ (".int 0xe50b0004\n"); //str r0, [fp, #-4]
return r;
}
#endif //__TINYC__
#if !__TINYC__
long
__sys_call2 (long sys_call, long one, long two)
{
long r;
asm (
"mov r7, %1\n\t"
"mov r0, %2\n\t"
"mov r1, %3\n\t"
"swi $0\n\t"
"mov %0, r0\n\t"
: "=r" (r)
: "r" (sys_call), "r" (one), "r" (two)
: "r0", "r1", "r7"
);
return r;
}
#else //__TINYC__
long
__sys_call2 (long sys_call, long one, long two)
{
long r;
__asm__ (".int 0xe1a07000\n"); //mov r7, r0
__asm__ (".int 0xe1a00001\n"); //mov r0, r1
__asm__ (".int 0xe1a01002\n"); //mov r1, r2
// __asm__ (".int 0xe1a02003\n"); //mov r2, r3
// __asm__ (".int 0xe1a03004\n"); //mov r3, r4
__asm__ (".int 0xef000000\n"); //svc 0x00000000
__asm__ (".int 0xe50b0004\n"); //str r0, [fp, #-4]
return r;
}
#endif //__TINYC__
#if !__TINYC__
long
__sys_call3 (long sys_call, long one, long two, long three)
{
long r;
asm (
"mov r7, %1\n\t"
"mov r0, %2\n\t"
"mov r1, %3\n\t"
"mov r2, %4\n\t"
"swi $0\n\t"
"mov %0, r0\n\t"
: "=r" (r)
: "r" (sys_call), "r" (one), "r" (two), "r" (three)
: "r0", "r1", "r2", "r7"
);
return r;
}
#else //__TINYC__
long
__sys_call3 (long sys_call, long one, long two, long three)
{
long r;
__asm__ (".int 0xe1a07000\n"); //mov r7, r0
__asm__ (".int 0xe1a00001\n"); //mov r0, r1
__asm__ (".int 0xe1a01002\n"); //mov r1, r2
__asm__ (".int 0xe1a02003\n"); //mov r2, r3
// __asm__ (".int 0xe1a03004\n"); //mov r3, r4
__asm__ (".int 0xef000000\n"); //svc 0x00000000
__asm__ (".int 0xe50b0004\n"); //str r0, [fp, #-4]
return r;
}
#endif //__TINYC__
#if !__TINYC__
long
__sys_call4 (long sys_call, long one, long two, long three, long four)
{
long r;
asm (
"mov r7, %1\n\t"
"mov r0, %2\n\t"
"mov r1, %3\n\t"
"mov r2, %4\n\t"
"mov r3, %5\n\t"
"swi $0\n\t"
"mov %0, r0\n\t"
: "=r" (r)
: "r" (sys_call), "r" (one), "r" (two), "r" (three), "r" (four)
: "r0", "r1", "r2", "r3", "r7"
);
return r;
}
#else //__TINYC__
long
__sys_call4 (long sys_call, long one, long two, long three, long four)
{
long r;
__asm__ (".int 0xe1a07000\n"); //mov r7, r0
__asm__ (".int 0xe1a00001\n"); //mov r0, r1
__asm__ (".int 0xe1a01002\n"); //mov r1, r2
__asm__ (".int 0xe1a02003\n"); //mov r2, r3
__asm__ (".int 0xe1a03004\n"); //mov r3, r4
__asm__ (".int 0xef000000\n"); //svc 0x00000000
__asm__ (".int 0xe50b0004\n"); //str r0, [fp, #-4]
return r;
}
#endif //__TINYC__
#if 0
long
__sys_call6 (long sys_call, long one, long two, long three, long four, long five, long six)
{
long r;
asm (
"mov r7, %1\n\t"
"mov r0, %2\n\t"
"mov r1, %3\n\t"
"mov r2, %4\n\t"
"mov r3, %5\n\t"
"mov r4, %6\n\t"
"mov r5, %7\n\t"
"swi $0\n\t"
"mov %0, r0\n\t"
: "=r" (r)
: "r" (sys_call), "r" (one), "r" (two), "r" (three), "r" (four), "r" (five), "r" (six)
: "r0", "r1", "r2", "r3", "r4", "r5" //, "r7" FIXME
);
return r;
}
#endif
// *INDENT-ON*
long
_sys_call (long sys_call)
{
long r = __sys_call (sys_call);
if (r < 0)
{
errno = -r;
r = -1;
}
else
errno = 0;
return r;
}
long
_sys_call1 (long sys_call, long one)
{
long r = __sys_call1 (sys_call, one);
if (r < 0)
{
errno = -r;
r = -1;
}
else
errno = 0;
return r;
}
long
_sys_call2 (long sys_call, long one, long two)
{
long r = __sys_call2 (sys_call, one, two);
if (r < 0)
{
errno = -r;
r = -1;
}
else
errno = 0;
return r;
}
long
_sys_call3 (long sys_call, long one, long two, long three)
{
long r = __sys_call3 (sys_call, one, two, three);
if (r < 0)
{
errno = -r;
r = -1;
}
else
errno = 0;
return r;
}
long
_sys_call4 (long sys_call, long one, long two, long three, long four)
{
long r = __sys_call4 (sys_call, one, two, three, four);
if (r < 0)
{
errno = -r;
r = -1;
}
else
errno = 0;
return r;
}
#if 0
long
_sys_call6 (long sys_call, long one, long two, long three, long four, long five, long six)
{
long r = __sys_call6 (sys_call, one, two, three, four, five, six);
if (r < 0)
{
errno = -r;
r = -1;
}
else
errno = 0;
return r;
}
#endif
|
