2010-04-22 09:22:13 +01:00
|
|
|
/*
|
|
|
|
* Mesa 3-D graphics library
|
|
|
|
*
|
|
|
|
* Copyright (C) 2010 LunarG Inc.
|
|
|
|
*
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
|
|
* to deal in the Software without restriction, including without limitation
|
|
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice shall be included
|
|
|
|
* in all copies or substantial portions of the Software.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
|
|
* DEALINGS IN THE SOFTWARE.
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Chia-I Wu <olv@lunarg.com>
|
|
|
|
*/
|
|
|
|
|
2020-02-18 22:05:39 +00:00
|
|
|
#ifdef __CET__
|
|
|
|
#define ENDBR "endbr64\n\t"
|
|
|
|
#else
|
|
|
|
#define ENDBR
|
|
|
|
#endif
|
|
|
|
|
2016-07-22 10:24:03 +01:00
|
|
|
#ifdef HAVE_FUNC_ATTRIBUTE_VISIBILITY
|
2016-07-11 18:44:25 +01:00
|
|
|
#define HIDDEN __attribute__((visibility("hidden")))
|
|
|
|
#else
|
|
|
|
#define HIDDEN
|
|
|
|
#endif
|
2010-04-22 09:22:13 +01:00
|
|
|
|
2010-12-16 16:24:27 +00:00
|
|
|
__asm__(".text\n"
|
|
|
|
".balign 32\n"
|
2010-12-24 07:06:41 +00:00
|
|
|
"x86_64_entry_start:");
|
|
|
|
|
2010-04-22 09:22:13 +01:00
|
|
|
#define STUB_ASM_ENTRY(func) \
|
|
|
|
".globl " func "\n" \
|
|
|
|
".type " func ", @function\n" \
|
|
|
|
".balign 32\n" \
|
|
|
|
func ":"
|
|
|
|
|
2017-01-08 17:38:09 +00:00
|
|
|
#ifndef __ILP32__
|
|
|
|
|
2010-04-22 09:22:13 +01:00
|
|
|
#define STUB_ASM_CODE(slot) \
|
2020-02-18 22:05:39 +00:00
|
|
|
ENDBR \
|
2010-08-24 08:51:57 +01:00
|
|
|
"movq " ENTRY_CURRENT_TABLE "@GOTTPOFF(%rip), %rax\n\t" \
|
2010-04-22 09:22:13 +01:00
|
|
|
"movq %fs:(%rax), %r11\n\t" \
|
|
|
|
"jmp *(8 * " slot ")(%r11)"
|
|
|
|
|
2017-01-08 17:38:09 +00:00
|
|
|
#else
|
|
|
|
|
|
|
|
#define STUB_ASM_CODE(slot) \
|
2020-02-18 22:05:39 +00:00
|
|
|
ENDBR \
|
2017-01-08 17:38:09 +00:00
|
|
|
"movq " ENTRY_CURRENT_TABLE "@GOTTPOFF(%rip), %rax\n\t" \
|
|
|
|
"movl %fs:(%rax), %r11d\n\t" \
|
|
|
|
"movl 4*" slot "(%r11d), %r11d\n\t" \
|
|
|
|
"jmp *%r11"
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2010-04-22 09:22:13 +01:00
|
|
|
#define MAPI_TMP_STUB_ASM_GCC
|
|
|
|
#include "mapi_tmp.h"
|
|
|
|
|
2010-12-16 16:24:27 +00:00
|
|
|
#ifndef MAPI_MODE_BRIDGE
|
|
|
|
|
|
|
|
#include <string.h>
|
|
|
|
#include "u_execmem.h"
|
|
|
|
|
2010-04-22 09:22:13 +01:00
|
|
|
void
|
|
|
|
entry_patch_public(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2016-07-11 18:44:25 +01:00
|
|
|
extern char
|
|
|
|
x86_64_entry_start[] HIDDEN;
|
2011-06-08 14:50:25 +01:00
|
|
|
|
2010-12-24 07:06:41 +00:00
|
|
|
mapi_func
|
|
|
|
entry_get_public(int slot)
|
|
|
|
{
|
|
|
|
return (mapi_func) (x86_64_entry_start + slot * 32);
|
|
|
|
}
|
|
|
|
|
2010-04-22 09:22:13 +01:00
|
|
|
void
|
|
|
|
entry_patch(mapi_func entry, int slot)
|
|
|
|
{
|
2010-09-30 10:09:59 +01:00
|
|
|
char *code = (char *) entry;
|
2017-01-08 17:38:09 +00:00
|
|
|
int offset = 12;
|
|
|
|
#ifdef __ILP32__
|
|
|
|
offset = 13;
|
|
|
|
#endif
|
|
|
|
*((unsigned int *) (code + offset)) = slot * sizeof(mapi_func);
|
2010-04-22 09:22:13 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
mapi_func
|
|
|
|
entry_generate(int slot)
|
|
|
|
{
|
2017-01-08 17:38:09 +00:00
|
|
|
const char code_templ[] = {
|
|
|
|
#ifndef __ILP32__
|
2010-04-22 09:22:13 +01:00
|
|
|
/* movq %fs:0, %r11 */
|
|
|
|
0x64, 0x4c, 0x8b, 0x1c, 0x25, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
/* jmp *0x1234(%r11) */
|
|
|
|
0x41, 0xff, 0xa3, 0x34, 0x12, 0x00, 0x00,
|
2017-01-08 17:38:09 +00:00
|
|
|
#else
|
|
|
|
/* movl %fs:0, %r11d */
|
|
|
|
0x64, 0x44, 0x8b, 0x1c, 0x25, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
/* movl 0x1234(%r11d), %r11d */
|
|
|
|
0x67, 0x45, 0x8b, 0x9b, 0x34, 0x12, 0x00, 0x00,
|
|
|
|
/* jmp *%r11 */
|
|
|
|
0x41, 0xff, 0xe3,
|
|
|
|
#endif
|
2010-04-22 09:22:13 +01:00
|
|
|
};
|
2017-01-08 17:38:09 +00:00
|
|
|
unsigned long long addr;
|
2015-02-27 19:42:43 +00:00
|
|
|
char *code;
|
2010-04-22 09:22:13 +01:00
|
|
|
mapi_func entry;
|
|
|
|
|
2014-09-26 01:28:20 +01:00
|
|
|
__asm__("movq " ENTRY_CURRENT_TABLE "@GOTTPOFF(%%rip), %0"
|
|
|
|
: "=r" (addr));
|
2010-04-22 09:22:13 +01:00
|
|
|
if ((addr >> 32) != 0xffffffff)
|
|
|
|
return NULL;
|
|
|
|
addr &= 0xffffffff;
|
|
|
|
|
|
|
|
code = u_execmem_alloc(sizeof(code_templ));
|
|
|
|
if (!code)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
memcpy(code, code_templ, sizeof(code_templ));
|
|
|
|
|
|
|
|
*((unsigned int *) (code + 5)) = addr;
|
|
|
|
entry = (mapi_func) code;
|
|
|
|
entry_patch(entry, slot);
|
|
|
|
|
|
|
|
return entry;
|
|
|
|
}
|
2010-12-16 16:24:27 +00:00
|
|
|
|
|
|
|
#endif /* MAPI_MODE_BRIDGE */
|