|
|
@@ -0,0 +1,112 @@
|
|
|
+/* Copyright (C) 1995,96,97,98,99,2000,2002 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, write to the Free
|
|
|
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
|
+ 02111-1307 USA. */
|
|
|
+
|
|
|
+
|
|
|
+#define _ERRNO_H 1
|
|
|
+#include <features.h>
|
|
|
+#include <bits/errno.h>
|
|
|
+#include <sys/syscall.h>
|
|
|
+
|
|
|
+#if defined __UCLIBC_HAS_LFS__ && defined __NR_mmap2
|
|
|
+
|
|
|
+
|
|
|
+#define LINKAGE 4
|
|
|
+#define PTR_SIZE 4
|
|
|
+#define SVRSP 16 /* saved register space */
|
|
|
+#define PARMS LINKAGE+SVRSP /* space for 4 saved regs */
|
|
|
+#define ADDR PARMS
|
|
|
+#define LEN ADDR+PTR_SIZE
|
|
|
+#define PROT LEN+4
|
|
|
+#define FLAGS PROT+4
|
|
|
+#define FD FLAGS+4
|
|
|
+#define OFFLO FD+4
|
|
|
+#define OFFHI OFFLO+4
|
|
|
+
|
|
|
+ .text
|
|
|
+ .globl mmap64;
|
|
|
+ .type mmap64,@function;
|
|
|
+ .align 1<<4;
|
|
|
+
|
|
|
+mmap64:
|
|
|
+ /* Save registers. */
|
|
|
+ pushl %ebp
|
|
|
+ pushl %ebx
|
|
|
+ pushl %esi
|
|
|
+ pushl %edi
|
|
|
+
|
|
|
+ movl OFFLO(%esp), %edx
|
|
|
+ movl OFFHI(%esp), %ecx
|
|
|
+ testl $0xfff, %edx
|
|
|
+ jne L_einval
|
|
|
+ shrdl $12, %ecx, %edx /* mmap2 takes the offset in pages. */
|
|
|
+ shrl $12, %ecx
|
|
|
+ jne L_einval
|
|
|
+ movl %edx, %ebp
|
|
|
+
|
|
|
+ movl ADDR(%esp), %ebx
|
|
|
+ movl LEN(%esp), %ecx
|
|
|
+ movl PROT(%esp), %edx
|
|
|
+ movl FLAGS(%esp), %esi
|
|
|
+ movl FD(%esp), %edi
|
|
|
+
|
|
|
+ movl $_NR_mmap2, %eax /* System call number in %eax. */
|
|
|
+ int $0x80
|
|
|
+
|
|
|
+ /* Restore registers. */
|
|
|
+ popl %edi
|
|
|
+ popl %esi
|
|
|
+ popl %ebx
|
|
|
+ popl %ebp
|
|
|
+
|
|
|
+ /* If 0 > %eax > -4096 there was an error. */
|
|
|
+ cmpl $-4095,%eax
|
|
|
+ jae __syscall_error
|
|
|
+ ret
|
|
|
+
|
|
|
+ /* This means the offset value is too large. */
|
|
|
+L_einval:
|
|
|
+ popl %edi
|
|
|
+ popl %esi
|
|
|
+ popl %ebx
|
|
|
+ popl %ebp
|
|
|
+ movl $-EINVAL, %eax
|
|
|
+ jmp __syscall_error
|
|
|
+
|
|
|
+
|
|
|
+__syscall_error:
|
|
|
+ negl %eax
|
|
|
+ pushl %eax
|
|
|
+#ifdef __PIC__
|
|
|
+ call .Lthere
|
|
|
+.Lthere:
|
|
|
+ popl %ebx
|
|
|
+ addl $_GLOBAL_OFFSET_TABLE_+[.- .Lthere ], %ebx
|
|
|
+ call __errno_location@PLT
|
|
|
+#else
|
|
|
+ call __errno_location
|
|
|
+#endif
|
|
|
+ popl %ecx
|
|
|
+ movl %ecx, (%eax)
|
|
|
+ xorl %eax, %eax
|
|
|
+ decl %eax
|
|
|
+
|
|
|
+.Lsize:
|
|
|
+ .size mmap64,.Lsize-mmap64
|
|
|
+
|
|
|
+#endif
|
|
|
+
|
Eric Andersen