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/* Wrapper around mmap system call. 64 bit S/390 version.
Copyright (C) 2001-2013 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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 <sysdep.h>
#define EINVAL 22
.text
ENTRY(__mmap)
/* Save registers and setup stack frame. */
stmg %r6,%r15,48(%r15)
cfi_offset (%r15,-40)
cfi_offset (%r14,-48)
cfi_offset (%r13,-56)
cfi_offset (%r12,-64)
cfi_offset (%r11,-72)
cfi_offset (%r10,-80)
cfi_offset (%r9,-88)
cfi_offset (%r8,-96)
cfi_offset (%r7,-104)
cfi_offset (%r6,-112)
lgr %r1,%r15
lg %r0,8(%r15) /* Load eos. */
aghi %r15,-208 /* Buy stack space. */
cfi_adjust_cfa_offset (208)
stg %r1,0(%r15) /* Store back chain. */
stg %r0,8(%r15) /* Store eos. */
/* Store parameters on stack, because old_mmap
takes only one parameter: a pointer to the parameter area. */
mvc 200(8,%r15),368(%r15) /* Move 'offset'. */
lgfr %r6,%r6
stg %r6,192(%r15) /* Store 'fd'. */
lgfr %r5,%r5
stg %r5,184(%r15) /* Store 'flags'. */
lgfr %r4,%r4
stg %r4,176(%r15) /* Store 'prot'. */
stg %r3,168(%r15) /* Store 'length'. */
stg %r2,160(%r15) /* Store 'start'. */
la %r2,160(%r15) /* Load address of parameter list. */
/* Do the system call trap. */
svc SYS_ify(mmap)
lg %r15,0(%r15) /* Load back chain. */
cfi_adjust_cfa_offset (-208)
lmg %r6,%r15,48(%r15) /* Load registers. */
/* Check gpr 2 for error. */
lghi %r0,-4096
clgr %r2,%r0
jgnl SYSCALL_ERROR_LABEL
/* Successful; return the syscall's value. */
br %r14
PSEUDO_END (__mmap)
weak_alias (__mmap, mmap)
weak_alias (__mmap, mmap64)
weak_alias (__mmap, __mmap64)
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