0,0 → 1,98 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - 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. |
* - 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. |
*/ |
|
/** @addtogroup rtld rtld |
* @brief |
* @{ |
*/ |
/** |
* @file |
*/ |
|
#include <sys/types.h> |
#include <align.h> |
#include <tls.h> |
|
void _putint(int i); |
/* FIXME */ |
void __udivdi3(void); |
void __umoddi3(void); |
|
static void kputint(unsigned i) |
{ |
unsigned dummy; |
asm volatile ( |
"movl $30, %%eax;" |
"int $0x30" |
: "=d" (dummy) /* output - %edx clobbered */ |
: "d" (i) /* input */ |
: "%eax","%ecx" /* all scratch registers clobbered */ |
); |
} |
|
typedef struct { |
unsigned long int ti_module; |
unsigned long int ti_offset; |
} tls_index; |
|
void __attribute__ ((__regparm__ (1))) |
*___tls_get_addr(tls_index *ti); |
|
void __attribute__ ((__regparm__ (1))) |
*___tls_get_addr(tls_index *ti) |
{ |
size_t tls_size; |
uint8_t *tls; |
|
/* Calculate size of TLS block */ |
tls_size = ALIGN_UP(&_tbss_end - &_tdata_start, &_tls_alignment); |
|
/* The TLS block is just before TCB */ |
tls = (uint8_t *)__tcb_get() - tls_size; |
|
return tls + ti->ti_offset; |
} |
|
void __umoddi3(void) |
{ |
kputint(0x101); |
*(int *)0 = 0; /* cause a page fault */ |
} |
|
void __udivdi3(void) |
{ |
kputint(0x102); |
*(int *)0 = 0; /* cause a page fault */ |
} |
|
void _putint(int i) |
{ |
} |
|
/** @} |
*/ |