corda/external/sgx_libm/ia32/fesetenv.S
Angie Chinchilla 9441de4c38 Initial release of Intel SGX for Linux.
This release is used in conjunction with the linux-sgx-driver Intial release:
https://github.com/01org/linux-sgx-driver
commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7

Intel-id: 33399

Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
2016-06-23 18:51:53 -04:00

125 lines
3.7 KiB
ArmAsm

/*
* Math library
*
* Copyright (C) 2016 Intel Corporation. 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*
*
* Author Name <jingwei.zhang@intel.com>
* History:
* 03-14-2016 Initial version. numerics svn rev. 12864
*/
.file "fesetenv.c"
.text
..TXTST0:
# -- Begin fesetenv
.text
.align 16,0x90
.globl fesetenv
fesetenv:
# parameter 1: 64 + %esp
..B1.1:
..L1:
pushl %edi
pushl %ebx
pushl %ebp
subl $48, %esp
movl %gs:20, %eax
xorl %esp, %eax
movl %eax, 32(%esp)
stmxcsr (%esp)
movl (%esp), %ecx
..B1.2:
fnstenv 4(%esp)
..B1.3:
movzwl 4(%esp), %edi
andl $-32704, %ecx
movzwl 8(%esp), %eax
andl $-3136, %edi
movl 64(%esp), %ebp
andl $-64, %eax
cmpl $-1, %ebp
je ..B1.10
..B1.4:
movzwl (%ebp), %edx
movl %edx, %ebx
movzwl 4(%ebp), %ebp
andl $3135, %ebx
andl $63, %ebp
orl %ebx, %edi
orl %ebp, %eax
movw %ax, 8(%esp)
movl %edx, %eax
andl $63, %eax
andl $3072, %edx
shll $7, %eax
shll $3, %edx
orl %eax, %ecx
orl %edx, %ecx
movw %di, 4(%esp)
orl %ebp, %ecx
..B1.5:
fnclex
..B1.6:
fldenv 4(%esp)
..B1.7:
movl %ecx, (%esp)
movl 32(%esp), %eax
xorl %esp, %eax
ldmxcsr (%esp)
cmpl %gs:20, %eax
jne ..B1.9
..B1.8:
xorl %eax, %eax
addl $48, %esp
popl %ebp
popl %ebx
popl %edi
ret
..B1.9:
call ..L2
..L2:
popl %ebx
lea _GLOBAL_OFFSET_TABLE_+[. - ..L2](%ebx), %ebx
call __stack_chk_fail@PLT
..B1.10:
orl $63, %edi
orl $8064, %ecx
movw %ax, 8(%esp)
movw %di, 4(%esp)
jmp ..B1.5
.align 16,0x90
.type fesetenv,@function
.size fesetenv,.-fesetenv
.data
# -- End fesetenv
.data
.section .note.GNU-stack, ""
# End