diff options
Diffstat (limited to 'libexec/rtld-aout/i386/mdprologue.S')
-rw-r--r-- | libexec/rtld-aout/i386/mdprologue.S | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/libexec/rtld-aout/i386/mdprologue.S b/libexec/rtld-aout/i386/mdprologue.S deleted file mode 100644 index f111bca..0000000 --- a/libexec/rtld-aout/i386/mdprologue.S +++ /dev/null @@ -1,93 +0,0 @@ -/* - * Copyright (c) 1993 Paul Kranenburg - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Paul Kranenburg. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * $FreeBSD$ - */ - -/* - * i386 run-time link editor entry points. - */ - -#include <sys/syscall.h> - - .text - .globl _binder, _binder_entry - -/* - * _rtl(int version, struct crt_ldso *crtp) - */ - -_rtl: # crt0 calls us here - pushl %ebp # Allocate stack frame - movl %esp,%ebp - pushl %ebx - - call 1f # PIC function prologue -1: - popl %ebx - addl $_GLOBAL_OFFSET_TABLE_+[.-1b],%ebx - - movl 12(%ebp),%eax # Extract data from interface structure - movl (%eax),%eax # base address of ld.so (first field) - # setup arguments for rtld() - movl (%ebx),%ecx # 1st entry in GOT is our __DYNAMIC - addl %eax,%ecx # add load address - pushl %ecx # 3rd arg - pushl 12(%ebp) # 2nd arg == &crt. - pushl 8(%ebp) # 1st arg == version - addl _rtld@GOT(%ebx),%eax # relocate address of function - call %eax # _rtld(version, crtp, DYNAMIC) - addl $12,%esp # pop arguments - - popl %ebx - leave # remove stack frame - ret - - # First call to a procedure generally comes through here for - # binding. - -_binder_entry: - pushl %ebp # setup a stack frame - movl %esp,%ebp - pusha # save all regs - - xorl %eax,%eax # clear - movl 4(%ebp),%esi # return address in PLT - movw (%esi),%ax # get hold of relocation number - subl $6,%esi # make it point to the jmpslot - - pushl %eax # pushd arguments - pushl %esi # - call _binder@PLT # _binder(rpc, index) - addl $8,%esp # pop arguments - movl %eax,4(%ebp) # return value from _binder() == actual - # address of function - popa # restore regs - leave # remove our stack frame - ret |