mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
f8de5057b9
* nscd/gai.c: Likewise. * sysdeps/unix/sysv/linux/statfs64.c: Likewise. * sysdeps/unix/sysv/linux/fstatfs64.c: Likewise. * sysdeps/unix/sysv/linux/fxstatat.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise. * sysdeps/unix/sysv/linux/xstatconv.c: Likewise. * sysdeps/unix/sysv/linux/if_index.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/xstat.c: Likewise. * sysdeps/unix/sysv/linux/ifaddrs.c: Likewise.
115 lines
3.3 KiB
ArmAsm
115 lines
3.3 KiB
ArmAsm
/* Copyright (C) 2000, 2001, 2007 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <kernel-features.h>
|
|
|
|
#define EINVAL 22
|
|
#define ENOSYS 38
|
|
|
|
.text
|
|
ENTRY(__mmap64)
|
|
/* Save registers and setup stack frame. */
|
|
stm %r6,%r15,24(%r15)
|
|
cfi_offset (%r15, -36)
|
|
cfi_offset (%r14, -40)
|
|
cfi_offset (%r13, -44)
|
|
cfi_offset (%r12, -48)
|
|
cfi_offset (%r11, -52)
|
|
cfi_offset (%r10, -56)
|
|
cfi_offset (%r9, -60)
|
|
cfi_offset (%r8, -64)
|
|
cfi_offset (%r7, -68)
|
|
cfi_offset (%r6, -72)
|
|
lr %r1,%r15
|
|
ahi %r15,-120 /* Buy stack space. */
|
|
cfi_adjust_cfa_offset (120)
|
|
st %r1,0(%r15) /* Store back chain. */
|
|
|
|
/* Store parameters on stack, because mmap2 and old_mmap
|
|
* take only one parameter: a pointer to the parameter area. */
|
|
st %r6,0x70(%r15) /* Store 'fd'. */
|
|
st %r5,0x6C(%r15) /* Store 'flags'. */
|
|
st %r4,0x68(%r15) /* Store 'prot'. */
|
|
st %r3,0x64(%r15) /* Store 'length'. */
|
|
st %r2,0x60(%r15) /* Store 'start'. */
|
|
|
|
#ifdef __NR_mmap2
|
|
lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
|
|
tml %r1,0x0fff /* Offset page aligned ? */
|
|
jnz 2f /* No -> EINVAL. */
|
|
srdl %r0,12 /* mmap2 takes the offset in pages. */
|
|
ltr %r0,%r0 /* Offset > 2^44 ? */
|
|
jnz 2f
|
|
st %r1,0x74(%r15) /* Store page offset. */
|
|
|
|
la %r2,0x60(%r15) /* Load address of parameter list. */
|
|
svc SYS_ify(mmap2) /* Do the system call trap. */
|
|
|
|
#ifndef __ASSUME_MMAP2_SYSCALL
|
|
chi %r2,-ENOSYS
|
|
je 1f
|
|
#endif
|
|
|
|
l %r15,0(%r15) /* Load back chain. */
|
|
cfi_adjust_cfa_offset (-120)
|
|
lm %r6,%r15,24(%r15) /* Load registers. */
|
|
|
|
/* Check gpr 2 for error. */
|
|
lhi %r0,-4096
|
|
clr %r2,%r0
|
|
jnl SYSCALL_ERROR_LABEL
|
|
|
|
/* Successful; return the syscall's value. */
|
|
br %r14
|
|
|
|
#endif
|
|
|
|
#if !defined __ASSUME_MMAP2_SYSCALL || !defined __NR_mmap2
|
|
1: lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
|
|
st %r1,0x74(%r15) /* Store lower word of offset. */
|
|
ltr %r0,%r0 /* Offset > 2^32 ? */
|
|
jnz 2f
|
|
alr %r1,%r3 /* Add length to offset. */
|
|
brc 3,2f /* Carry -> EINVAL. */
|
|
|
|
la %r2,0x60(%r15) /* Load address of parameter list. */
|
|
svc SYS_ify(mmap) /* Do the system call trap. */
|
|
|
|
l %r15,0(%r15) /* Load back chain. */
|
|
lm %r6,%r15,24(%r15) /* Load registers. */
|
|
|
|
/* Check gpr 2 for error. */
|
|
lhi %r0,-4096
|
|
clr %r2,%r0
|
|
jnl SYSCALL_ERROR_LABEL
|
|
|
|
/* Successful; return the syscall's value. */
|
|
br %r14
|
|
#endif
|
|
|
|
2: lhi %r2,-EINVAL
|
|
l %r15,0(%r15) /* Load back chain. */
|
|
lm %r6,%r15,24(%r15) /* Load registers. */
|
|
j SYSCALL_ERROR_LABEL
|
|
|
|
PSEUDO_END (__mmap64)
|
|
|
|
weak_alias (__mmap64, mmap64)
|