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zfs/module/icp/asm-x86_64/aes/aes_amd64.S

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Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
/*
* ---------------------------------------------------------------------------
* Copyright (c) 1998-2007, Brian Gladman, Worcester, UK. All rights reserved.
*
* LICENSE TERMS
*
* The free distribution and use of this software is allowed (with or without
* changes) provided that:
*
* 1. source code distributions include the above copyright notice, this
* list of conditions and the following disclaimer;
*
* 2. binary distributions include the above copyright notice, this list
* of conditions and the following disclaimer in their documentation;
*
* 3. the name of the copyright holder is not used to endorse products
* built using this software without specific written permission.
*
* DISCLAIMER
*
* This software is provided 'as is' with no explicit or implied warranties
* in respect of its properties, including, but not limited to, correctness
* and/or fitness for purpose.
* ---------------------------------------------------------------------------
* Issue 20/12/2007
*
* I am grateful to Dag Arne Osvik for many discussions of the techniques that
* can be used to optimise AES assembler code on AMD64/EM64T architectures.
* Some of the techniques used in this implementation are the result of
* suggestions made by him for which I am most grateful.
*
* An AES implementation for AMD64 processors using the YASM assembler. This
* implementation provides only encryption, decryption and hence requires key
* scheduling support in C. It uses 8k bytes of tables but its encryption and
* decryption performance is very close to that obtained using large tables.
* It can use either MS Windows or Gnu/Linux/OpenSolaris OS calling conventions,
* which are as follows:
* ms windows gnu/linux/opensolaris os
*
* in_blk rcx rdi
* out_blk rdx rsi
* context (cx) r8 rdx
*
* preserved rsi - + rbx, rbp, rsp, r12, r13, r14 & r15
* registers rdi - on both
*
* destroyed - rsi + rax, rcx, rdx, r8, r9, r10 & r11
* registers - rdi on both
*
* The convention used here is that for gnu/linux/opensolaris os.
*
* This code provides the standard AES block size (128 bits, 16 bytes) and the
* three standard AES key sizes (128, 192 and 256 bits). It has the same call
* interface as my C implementation. It uses the Microsoft C AMD64 calling
* conventions in which the three parameters are placed in rcx, rdx and r8
* respectively. The rbx, rsi, rdi, rbp and r12..r15 registers are preserved.
*
* OpenSolaris Note:
* Modified to use GNU/Linux/Solaris calling conventions.
* That is parameters are placed in rdi, rsi, rdx, and rcx, respectively.
*
* AES_RETURN aes_encrypt(const unsigned char in_blk[],
* unsigned char out_blk[], const aes_encrypt_ctx cx[1])/
*
* AES_RETURN aes_decrypt(const unsigned char in_blk[],
* unsigned char out_blk[], const aes_decrypt_ctx cx[1])/
*
* AES_RETURN aes_encrypt_key<NNN>(const unsigned char key[],
* const aes_encrypt_ctx cx[1])/
*
* AES_RETURN aes_decrypt_key<NNN>(const unsigned char key[],
* const aes_decrypt_ctx cx[1])/
*
* AES_RETURN aes_encrypt_key(const unsigned char key[],
* unsigned int len, const aes_decrypt_ctx cx[1])/
*
* AES_RETURN aes_decrypt_key(const unsigned char key[],
* unsigned int len, const aes_decrypt_ctx cx[1])/
*
* where <NNN> is 128, 102 or 256. In the last two calls the length can be in
* either bits or bytes.
*
* Comment in/out the following lines to obtain the desired subroutines. These
* selections MUST match those in the C header file aesopt.h
*/
#define AES_REV_DKS /* define if key decryption schedule is reversed */
#define LAST_ROUND_TABLES /* define for the faster version using extra tables */
/*
* The encryption key schedule has the following in memory layout where N is the
* number of rounds (10, 12 or 14):
*
* lo: | input key (round 0) | / each round is four 32-bit words
* | encryption round 1 |
* | encryption round 2 |
* ....
* | encryption round N-1 |
* hi: | encryption round N |
*
* The decryption key schedule is normally set up so that it has the same
* layout as above by actually reversing the order of the encryption key
* schedule in memory (this happens when AES_REV_DKS is set):
*
* lo: | decryption round 0 | = | encryption round N |
* | decryption round 1 | = INV_MIX_COL[ | encryption round N-1 | ]
* | decryption round 2 | = INV_MIX_COL[ | encryption round N-2 | ]
* .... ....
* | decryption round N-1 | = INV_MIX_COL[ | encryption round 1 | ]
* hi: | decryption round N | = | input key (round 0) |
*
* with rounds except the first and last modified using inv_mix_column()
* But if AES_REV_DKS is NOT set the order of keys is left as it is for
* encryption so that it has to be accessed in reverse when used for
* decryption (although the inverse mix column modifications are done)
*
* lo: | decryption round 0 | = | input key (round 0) |
* | decryption round 1 | = INV_MIX_COL[ | encryption round 1 | ]
* | decryption round 2 | = INV_MIX_COL[ | encryption round 2 | ]
* .... ....
* | decryption round N-1 | = INV_MIX_COL[ | encryption round N-1 | ]
* hi: | decryption round N | = | encryption round N |
*
* This layout is faster when the assembler key scheduling provided here
* is used.
*
* End of user defines
*/
/*
* ---------------------------------------------------------------------------
* OpenSolaris OS modifications
*
* This source originates from Brian Gladman file aes_amd64.asm
* in http://fp.gladman.plus.com/AES/aes-src-04-03-08.zip
* with these changes:
*
* 1. Removed MS Windows-specific code within DLL_EXPORT, _SEH_, and
* !__GNUC__ ifdefs. Also removed ENCRYPTION, DECRYPTION,
* AES_128, AES_192, AES_256, AES_VAR ifdefs.
*
* 2. Translate yasm/nasm %define and .macro definitions to cpp(1) #define
*
* 3. Translate yasm/nasm %ifdef/%ifndef to cpp(1) #ifdef
*
* 4. Translate Intel/yasm/nasm syntax to ATT/OpenSolaris as(1) syntax
* (operands reversed, literals prefixed with "$", registers prefixed with "%",
* and "[register+offset]", addressing changed to "offset(register)",
* parenthesis in constant expressions "()" changed to square brackets "[]",
* "." removed from local (numeric) labels, and other changes.
* Examples:
* Intel/yasm/nasm Syntax ATT/OpenSolaris Syntax
* mov rax,(4*20h) mov $[4*0x20],%rax
* mov rax,[ebx+20h] mov 0x20(%ebx),%rax
* lea rax,[ebx+ecx] lea (%ebx,%ecx),%rax
* sub rax,[ebx+ecx*4-20h] sub -0x20(%ebx,%ecx,4),%rax
*
* 5. Added OpenSolaris ENTRY_NP/SET_SIZE macros from
* /usr/include/sys/asm_linkage.h, lint(1B) guards, and dummy C function
* definitions for lint.
*
* 6. Renamed functions and reordered parameters to match OpenSolaris:
* Original Gladman interface:
* int aes_encrypt(const unsigned char *in,
* unsigned char *out, const aes_encrypt_ctx cx[1])/
* int aes_decrypt(const unsigned char *in,
* unsigned char *out, const aes_encrypt_ctx cx[1])/
* Note: aes_encrypt_ctx contains ks, a 60 element array of uint32_t,
* and a union type, inf., containing inf.l, a uint32_t and
* inf.b, a 4-element array of uint32_t. Only b[0] in the array (aka "l") is
* used and contains the key schedule length * 16 where key schedule length is
* 10, 12, or 14 bytes.
*
* OpenSolaris OS interface:
* void aes_encrypt_amd64(const aes_ks_t *ks, int Nr,
* const uint32_t pt[4], uint32_t ct[4])/
* void aes_decrypt_amd64(const aes_ks_t *ks, int Nr,
* const uint32_t pt[4], uint32_t ct[4])/
* typedef union {uint64_t ks64[(MAX_AES_NR + 1) * 4]/
* uint32_t ks32[(MAX_AES_NR + 1) * 4]/ } aes_ks_t/
* Note: ks is the AES key schedule, Nr is number of rounds, pt is plain text,
* ct is crypto text, and MAX_AES_NR is 14.
* For the x86 64-bit architecture, OpenSolaris OS uses ks32 instead of ks64.
*/
#if defined(lint) || defined(__lint)
#include <sys/types.h>
/* ARGSUSED */
void
aes_encrypt_amd64(const uint32_t rk[], int Nr, const uint32_t pt[4],
uint32_t ct[4]) {
}
/* ARGSUSED */
void
aes_decrypt_amd64(const uint32_t rk[], int Nr, const uint32_t ct[4],
uint32_t pt[4]) {
}
#else
#define _ASM
#include <sys/asm_linkage.h>
#define KS_LENGTH 60
#define raxd eax
#define rdxd edx
#define rcxd ecx
#define rbxd ebx
#define rsid esi
#define rdid edi
#define raxb al
#define rdxb dl
#define rcxb cl
#define rbxb bl
#define rsib sil
#define rdib dil
// finite field multiplies by {02}, {04} and {08}
#define f2(x) [[x<<1]^[[[x>>7]&1]*0x11b]]
#define f4(x) [[x<<2]^[[[x>>6]&1]*0x11b]^[[[x>>6]&2]*0x11b]]
#define f8(x) [[x<<3]^[[[x>>5]&1]*0x11b]^[[[x>>5]&2]*0x11b]^[[[x>>5]&4]*0x11b]]
// finite field multiplies required in table generation
#define f3(x) [[f2(x)] ^ [x]]
#define f9(x) [[f8(x)] ^ [x]]
#define fb(x) [[f8(x)] ^ [f2(x)] ^ [x]]
#define fd(x) [[f8(x)] ^ [f4(x)] ^ [x]]
#define fe(x) [[f8(x)] ^ [f4(x)] ^ [f2(x)]]
// macros for expanding S-box data
#define u8(x) [f2(x)], [x], [x], [f3(x)], [f2(x)], [x], [x], [f3(x)]
#define v8(x) [fe(x)], [f9(x)], [fd(x)], [fb(x)], [fe(x)], [f9(x)], [fd(x)], [x]
#define w8(x) [x], 0, 0, 0, [x], 0, 0, 0
#define enc_vals(x) \
.byte x(0x63),x(0x7c),x(0x77),x(0x7b),x(0xf2),x(0x6b),x(0x6f),x(0xc5); \
.byte x(0x30),x(0x01),x(0x67),x(0x2b),x(0xfe),x(0xd7),x(0xab),x(0x76); \
.byte x(0xca),x(0x82),x(0xc9),x(0x7d),x(0xfa),x(0x59),x(0x47),x(0xf0); \
.byte x(0xad),x(0xd4),x(0xa2),x(0xaf),x(0x9c),x(0xa4),x(0x72),x(0xc0); \
.byte x(0xb7),x(0xfd),x(0x93),x(0x26),x(0x36),x(0x3f),x(0xf7),x(0xcc); \
.byte x(0x34),x(0xa5),x(0xe5),x(0xf1),x(0x71),x(0xd8),x(0x31),x(0x15); \
.byte x(0x04),x(0xc7),x(0x23),x(0xc3),x(0x18),x(0x96),x(0x05),x(0x9a); \
.byte x(0x07),x(0x12),x(0x80),x(0xe2),x(0xeb),x(0x27),x(0xb2),x(0x75); \
.byte x(0x09),x(0x83),x(0x2c),x(0x1a),x(0x1b),x(0x6e),x(0x5a),x(0xa0); \
.byte x(0x52),x(0x3b),x(0xd6),x(0xb3),x(0x29),x(0xe3),x(0x2f),x(0x84); \
.byte x(0x53),x(0xd1),x(0x00),x(0xed),x(0x20),x(0xfc),x(0xb1),x(0x5b); \
.byte x(0x6a),x(0xcb),x(0xbe),x(0x39),x(0x4a),x(0x4c),x(0x58),x(0xcf); \
.byte x(0xd0),x(0xef),x(0xaa),x(0xfb),x(0x43),x(0x4d),x(0x33),x(0x85); \
.byte x(0x45),x(0xf9),x(0x02),x(0x7f),x(0x50),x(0x3c),x(0x9f),x(0xa8); \
.byte x(0x51),x(0xa3),x(0x40),x(0x8f),x(0x92),x(0x9d),x(0x38),x(0xf5); \
.byte x(0xbc),x(0xb6),x(0xda),x(0x21),x(0x10),x(0xff),x(0xf3),x(0xd2); \
.byte x(0xcd),x(0x0c),x(0x13),x(0xec),x(0x5f),x(0x97),x(0x44),x(0x17); \
.byte x(0xc4),x(0xa7),x(0x7e),x(0x3d),x(0x64),x(0x5d),x(0x19),x(0x73); \
.byte x(0x60),x(0x81),x(0x4f),x(0xdc),x(0x22),x(0x2a),x(0x90),x(0x88); \
.byte x(0x46),x(0xee),x(0xb8),x(0x14),x(0xde),x(0x5e),x(0x0b),x(0xdb); \
.byte x(0xe0),x(0x32),x(0x3a),x(0x0a),x(0x49),x(0x06),x(0x24),x(0x5c); \
.byte x(0xc2),x(0xd3),x(0xac),x(0x62),x(0x91),x(0x95),x(0xe4),x(0x79); \
.byte x(0xe7),x(0xc8),x(0x37),x(0x6d),x(0x8d),x(0xd5),x(0x4e),x(0xa9); \
.byte x(0x6c),x(0x56),x(0xf4),x(0xea),x(0x65),x(0x7a),x(0xae),x(0x08); \
.byte x(0xba),x(0x78),x(0x25),x(0x2e),x(0x1c),x(0xa6),x(0xb4),x(0xc6); \
.byte x(0xe8),x(0xdd),x(0x74),x(0x1f),x(0x4b),x(0xbd),x(0x8b),x(0x8a); \
.byte x(0x70),x(0x3e),x(0xb5),x(0x66),x(0x48),x(0x03),x(0xf6),x(0x0e); \
.byte x(0x61),x(0x35),x(0x57),x(0xb9),x(0x86),x(0xc1),x(0x1d),x(0x9e); \
.byte x(0xe1),x(0xf8),x(0x98),x(0x11),x(0x69),x(0xd9),x(0x8e),x(0x94); \
.byte x(0x9b),x(0x1e),x(0x87),x(0xe9),x(0xce),x(0x55),x(0x28),x(0xdf); \
.byte x(0x8c),x(0xa1),x(0x89),x(0x0d),x(0xbf),x(0xe6),x(0x42),x(0x68); \
.byte x(0x41),x(0x99),x(0x2d),x(0x0f),x(0xb0),x(0x54),x(0xbb),x(0x16)
#define dec_vals(x) \
.byte x(0x52),x(0x09),x(0x6a),x(0xd5),x(0x30),x(0x36),x(0xa5),x(0x38); \
.byte x(0xbf),x(0x40),x(0xa3),x(0x9e),x(0x81),x(0xf3),x(0xd7),x(0xfb); \
.byte x(0x7c),x(0xe3),x(0x39),x(0x82),x(0x9b),x(0x2f),x(0xff),x(0x87); \
.byte x(0x34),x(0x8e),x(0x43),x(0x44),x(0xc4),x(0xde),x(0xe9),x(0xcb); \
.byte x(0x54),x(0x7b),x(0x94),x(0x32),x(0xa6),x(0xc2),x(0x23),x(0x3d); \
.byte x(0xee),x(0x4c),x(0x95),x(0x0b),x(0x42),x(0xfa),x(0xc3),x(0x4e); \
.byte x(0x08),x(0x2e),x(0xa1),x(0x66),x(0x28),x(0xd9),x(0x24),x(0xb2); \
.byte x(0x76),x(0x5b),x(0xa2),x(0x49),x(0x6d),x(0x8b),x(0xd1),x(0x25); \
.byte x(0x72),x(0xf8),x(0xf6),x(0x64),x(0x86),x(0x68),x(0x98),x(0x16); \
.byte x(0xd4),x(0xa4),x(0x5c),x(0xcc),x(0x5d),x(0x65),x(0xb6),x(0x92); \
.byte x(0x6c),x(0x70),x(0x48),x(0x50),x(0xfd),x(0xed),x(0xb9),x(0xda); \
.byte x(0x5e),x(0x15),x(0x46),x(0x57),x(0xa7),x(0x8d),x(0x9d),x(0x84); \
.byte x(0x90),x(0xd8),x(0xab),x(0x00),x(0x8c),x(0xbc),x(0xd3),x(0x0a); \
.byte x(0xf7),x(0xe4),x(0x58),x(0x05),x(0xb8),x(0xb3),x(0x45),x(0x06); \
.byte x(0xd0),x(0x2c),x(0x1e),x(0x8f),x(0xca),x(0x3f),x(0x0f),x(0x02); \
.byte x(0xc1),x(0xaf),x(0xbd),x(0x03),x(0x01),x(0x13),x(0x8a),x(0x6b); \
.byte x(0x3a),x(0x91),x(0x11),x(0x41),x(0x4f),x(0x67),x(0xdc),x(0xea); \
.byte x(0x97),x(0xf2),x(0xcf),x(0xce),x(0xf0),x(0xb4),x(0xe6),x(0x73); \
.byte x(0x96),x(0xac),x(0x74),x(0x22),x(0xe7),x(0xad),x(0x35),x(0x85); \
.byte x(0xe2),x(0xf9),x(0x37),x(0xe8),x(0x1c),x(0x75),x(0xdf),x(0x6e); \
.byte x(0x47),x(0xf1),x(0x1a),x(0x71),x(0x1d),x(0x29),x(0xc5),x(0x89); \
.byte x(0x6f),x(0xb7),x(0x62),x(0x0e),x(0xaa),x(0x18),x(0xbe),x(0x1b); \
.byte x(0xfc),x(0x56),x(0x3e),x(0x4b),x(0xc6),x(0xd2),x(0x79),x(0x20); \
.byte x(0x9a),x(0xdb),x(0xc0),x(0xfe),x(0x78),x(0xcd),x(0x5a),x(0xf4); \
.byte x(0x1f),x(0xdd),x(0xa8),x(0x33),x(0x88),x(0x07),x(0xc7),x(0x31); \
.byte x(0xb1),x(0x12),x(0x10),x(0x59),x(0x27),x(0x80),x(0xec),x(0x5f); \
.byte x(0x60),x(0x51),x(0x7f),x(0xa9),x(0x19),x(0xb5),x(0x4a),x(0x0d); \
.byte x(0x2d),x(0xe5),x(0x7a),x(0x9f),x(0x93),x(0xc9),x(0x9c),x(0xef); \
.byte x(0xa0),x(0xe0),x(0x3b),x(0x4d),x(0xae),x(0x2a),x(0xf5),x(0xb0); \
.byte x(0xc8),x(0xeb),x(0xbb),x(0x3c),x(0x83),x(0x53),x(0x99),x(0x61); \
.byte x(0x17),x(0x2b),x(0x04),x(0x7e),x(0xba),x(0x77),x(0xd6),x(0x26); \
.byte x(0xe1),x(0x69),x(0x14),x(0x63),x(0x55),x(0x21),x(0x0c),x(0x7d)
#define tptr %rbp /* table pointer */
#define kptr %r8 /* key schedule pointer */
#define fofs 128 /* adjust offset in key schedule to keep |disp| < 128 */
#define fk_ref(x, y) -16*x+fofs+4*y(kptr)
#ifdef AES_REV_DKS
#define rofs 128
#define ik_ref(x, y) -16*x+rofs+4*y(kptr)
#else
#define rofs -128
#define ik_ref(x, y) 16*x+rofs+4*y(kptr)
#endif /* AES_REV_DKS */
#define tab_0(x) (tptr,x,8)
#define tab_1(x) 3(tptr,x,8)
#define tab_2(x) 2(tptr,x,8)
#define tab_3(x) 1(tptr,x,8)
#define tab_f(x) 1(tptr,x,8)
#define tab_i(x) 7(tptr,x,8)
#define ff_rnd(p1, p2, p3, p4, round) /* normal forward round */ \
mov fk_ref(round,0), p1; \
mov fk_ref(round,1), p2; \
mov fk_ref(round,2), p3; \
mov fk_ref(round,3), p4; \
\
movzx %al, %esi; \
movzx %ah, %edi; \
shr $16, %eax; \
xor tab_0(%rsi), p1; \
xor tab_1(%rdi), p4; \
movzx %al, %esi; \
movzx %ah, %edi; \
xor tab_2(%rsi), p3; \
xor tab_3(%rdi), p2; \
\
movzx %bl, %esi; \
movzx %bh, %edi; \
shr $16, %ebx; \
xor tab_0(%rsi), p2; \
xor tab_1(%rdi), p1; \
movzx %bl, %esi; \
movzx %bh, %edi; \
xor tab_2(%rsi), p4; \
xor tab_3(%rdi), p3; \
\
movzx %cl, %esi; \
movzx %ch, %edi; \
shr $16, %ecx; \
xor tab_0(%rsi), p3; \
xor tab_1(%rdi), p2; \
movzx %cl, %esi; \
movzx %ch, %edi; \
xor tab_2(%rsi), p1; \
xor tab_3(%rdi), p4; \
\
movzx %dl, %esi; \
movzx %dh, %edi; \
shr $16, %edx; \
xor tab_0(%rsi), p4; \
xor tab_1(%rdi), p3; \
movzx %dl, %esi; \
movzx %dh, %edi; \
xor tab_2(%rsi), p2; \
xor tab_3(%rdi), p1; \
\
mov p1, %eax; \
mov p2, %ebx; \
mov p3, %ecx; \
mov p4, %edx
#ifdef LAST_ROUND_TABLES
#define fl_rnd(p1, p2, p3, p4, round) /* last forward round */ \
add $2048, tptr; \
mov fk_ref(round,0), p1; \
mov fk_ref(round,1), p2; \
mov fk_ref(round,2), p3; \
mov fk_ref(round,3), p4; \
\
movzx %al, %esi; \
movzx %ah, %edi; \
shr $16, %eax; \
xor tab_0(%rsi), p1; \
xor tab_1(%rdi), p4; \
movzx %al, %esi; \
movzx %ah, %edi; \
xor tab_2(%rsi), p3; \
xor tab_3(%rdi), p2; \
\
movzx %bl, %esi; \
movzx %bh, %edi; \
shr $16, %ebx; \
xor tab_0(%rsi), p2; \
xor tab_1(%rdi), p1; \
movzx %bl, %esi; \
movzx %bh, %edi; \
xor tab_2(%rsi), p4; \
xor tab_3(%rdi), p3; \
\
movzx %cl, %esi; \
movzx %ch, %edi; \
shr $16, %ecx; \
xor tab_0(%rsi), p3; \
xor tab_1(%rdi), p2; \
movzx %cl, %esi; \
movzx %ch, %edi; \
xor tab_2(%rsi), p1; \
xor tab_3(%rdi), p4; \
\
movzx %dl, %esi; \
movzx %dh, %edi; \
shr $16, %edx; \
xor tab_0(%rsi), p4; \
xor tab_1(%rdi), p3; \
movzx %dl, %esi; \
movzx %dh, %edi; \
xor tab_2(%rsi), p2; \
xor tab_3(%rdi), p1
#else
#define fl_rnd(p1, p2, p3, p4, round) /* last forward round */ \
mov fk_ref(round,0), p1; \
mov fk_ref(round,1), p2; \
mov fk_ref(round,2), p3; \
mov fk_ref(round,3), p4; \
\
movzx %al, %esi; \
movzx %ah, %edi; \
shr $16, %eax; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
xor %esi, p1; \
rol $8, %edi; \
xor %edi, p4; \
movzx %al, %esi; \
movzx %ah, %edi; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p3; \
xor %edi, p2; \
\
movzx %bl, %esi; \
movzx %bh, %edi; \
shr $16, %ebx; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
xor %esi, p2; \
rol $8, %edi; \
xor %edi, p1; \
movzx %bl, %esi; \
movzx %bh, %edi; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p4; \
xor %edi, p3; \
\
movzx %cl, %esi; \
movzx %ch, %edi; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
shr $16, %ecx; \
xor %esi, p3; \
rol $8, %edi; \
xor %edi, p2; \
movzx %cl, %esi; \
movzx %ch, %edi; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p1; \
xor %edi, p4; \
\
movzx %dl, %esi; \
movzx %dh, %edi; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
shr $16, %edx; \
xor %esi, p4; \
rol $8, %edi; \
xor %edi, p3; \
movzx %dl, %esi; \
movzx %dh, %edi; \
movzx tab_f(%rsi), %esi; \
movzx tab_f(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p2; \
xor %edi, p1
#endif /* LAST_ROUND_TABLES */
#define ii_rnd(p1, p2, p3, p4, round) /* normal inverse round */ \
mov ik_ref(round,0), p1; \
mov ik_ref(round,1), p2; \
mov ik_ref(round,2), p3; \
mov ik_ref(round,3), p4; \
\
movzx %al, %esi; \
movzx %ah, %edi; \
shr $16, %eax; \
xor tab_0(%rsi), p1; \
xor tab_1(%rdi), p2; \
movzx %al, %esi; \
movzx %ah, %edi; \
xor tab_2(%rsi), p3; \
xor tab_3(%rdi), p4; \
\
movzx %bl, %esi; \
movzx %bh, %edi; \
shr $16, %ebx; \
xor tab_0(%rsi), p2; \
xor tab_1(%rdi), p3; \
movzx %bl, %esi; \
movzx %bh, %edi; \
xor tab_2(%rsi), p4; \
xor tab_3(%rdi), p1; \
\
movzx %cl, %esi; \
movzx %ch, %edi; \
shr $16, %ecx; \
xor tab_0(%rsi), p3; \
xor tab_1(%rdi), p4; \
movzx %cl, %esi; \
movzx %ch, %edi; \
xor tab_2(%rsi), p1; \
xor tab_3(%rdi), p2; \
\
movzx %dl, %esi; \
movzx %dh, %edi; \
shr $16, %edx; \
xor tab_0(%rsi), p4; \
xor tab_1(%rdi), p1; \
movzx %dl, %esi; \
movzx %dh, %edi; \
xor tab_2(%rsi), p2; \
xor tab_3(%rdi), p3; \
\
mov p1, %eax; \
mov p2, %ebx; \
mov p3, %ecx; \
mov p4, %edx
#ifdef LAST_ROUND_TABLES
#define il_rnd(p1, p2, p3, p4, round) /* last inverse round */ \
add $2048, tptr; \
mov ik_ref(round,0), p1; \
mov ik_ref(round,1), p2; \
mov ik_ref(round,2), p3; \
mov ik_ref(round,3), p4; \
\
movzx %al, %esi; \
movzx %ah, %edi; \
shr $16, %eax; \
xor tab_0(%rsi), p1; \
xor tab_1(%rdi), p2; \
movzx %al, %esi; \
movzx %ah, %edi; \
xor tab_2(%rsi), p3; \
xor tab_3(%rdi), p4; \
\
movzx %bl, %esi; \
movzx %bh, %edi; \
shr $16, %ebx; \
xor tab_0(%rsi), p2; \
xor tab_1(%rdi), p3; \
movzx %bl, %esi; \
movzx %bh, %edi; \
xor tab_2(%rsi), p4; \
xor tab_3(%rdi), p1; \
\
movzx %cl, %esi; \
movzx %ch, %edi; \
shr $16, %ecx; \
xor tab_0(%rsi), p3; \
xor tab_1(%rdi), p4; \
movzx %cl, %esi; \
movzx %ch, %edi; \
xor tab_2(%rsi), p1; \
xor tab_3(%rdi), p2; \
\
movzx %dl, %esi; \
movzx %dh, %edi; \
shr $16, %edx; \
xor tab_0(%rsi), p4; \
xor tab_1(%rdi), p1; \
movzx %dl, %esi; \
movzx %dh, %edi; \
xor tab_2(%rsi), p2; \
xor tab_3(%rdi), p3
#else
#define il_rnd(p1, p2, p3, p4, round) /* last inverse round */ \
mov ik_ref(round,0), p1; \
mov ik_ref(round,1), p2; \
mov ik_ref(round,2), p3; \
mov ik_ref(round,3), p4; \
\
movzx %al, %esi; \
movzx %ah, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
shr $16, %eax; \
xor %esi, p1; \
rol $8, %edi; \
xor %edi, p2; \
movzx %al, %esi; \
movzx %ah, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p3; \
xor %edi, p4; \
\
movzx %bl, %esi; \
movzx %bh, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
shr $16, %ebx; \
xor %esi, p2; \
rol $8, %edi; \
xor %edi, p3; \
movzx %bl, %esi; \
movzx %bh, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p4; \
xor %edi, p1; \
\
movzx %cl, %esi; \
movzx %ch, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
shr $16, %ecx; \
xor %esi, p3; \
rol $8, %edi; \
xor %edi, p4; \
movzx %cl, %esi; \
movzx %ch, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p1; \
xor %edi, p2; \
\
movzx %dl, %esi; \
movzx %dh, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
shr $16, %edx; \
xor %esi, p4; \
rol $8, %edi; \
xor %edi, p1; \
movzx %dl, %esi; \
movzx %dh, %edi; \
movzx tab_i(%rsi), %esi; \
movzx tab_i(%rdi), %edi; \
rol $16, %esi; \
rol $24, %edi; \
xor %esi, p2; \
xor %edi, p3
#endif /* LAST_ROUND_TABLES */
/*
* OpenSolaris OS:
* void aes_encrypt_amd64(const aes_ks_t *ks, int Nr,
* const uint32_t pt[4], uint32_t ct[4])/
*
* Original interface:
* int aes_encrypt(const unsigned char *in,
* unsigned char *out, const aes_encrypt_ctx cx[1])/
*/
[icp] fpu and asm cleanup for linux Properly annotate functions and data section so that objtool does not complain when CONFIG_STACK_VALIDATION and CONFIG_FRAME_POINTER are enabled. Pass KERNELCPPFLAGS to assembler. Use kfpu_begin()/kfpu_end() to protect SIMD regions in Linux kernel. Reviewed-by: Tom Caputi <tcaputi@datto.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Gvozden Neskovic <neskovic@gmail.com> Closes #5872 Closes #5041
2017-03-07 20:59:31 +00:00
.data
.align 64
Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
enc_tab:
enc_vals(u8)
#ifdef LAST_ROUND_TABLES
// Last Round Tables:
enc_vals(w8)
#endif
[icp] fpu and asm cleanup for linux Properly annotate functions and data section so that objtool does not complain when CONFIG_STACK_VALIDATION and CONFIG_FRAME_POINTER are enabled. Pass KERNELCPPFLAGS to assembler. Use kfpu_begin()/kfpu_end() to protect SIMD regions in Linux kernel. Reviewed-by: Tom Caputi <tcaputi@datto.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Gvozden Neskovic <neskovic@gmail.com> Closes #5872 Closes #5041
2017-03-07 20:59:31 +00:00
ENTRY_NP(aes_encrypt_amd64)
Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
#ifdef GLADMAN_INTERFACE
// Original interface
sub $[4*8], %rsp // gnu/linux/opensolaris binary interface
mov %rsi, (%rsp) // output pointer (P2)
mov %rdx, %r8 // context (P3)
mov %rbx, 1*8(%rsp) // P1: input pointer in rdi
mov %rbp, 2*8(%rsp) // P2: output pointer in (rsp)
mov %r12, 3*8(%rsp) // P3: context in r8
movzx 4*KS_LENGTH(kptr), %esi // Get byte key length * 16
#else
// OpenSolaris OS interface
sub $[4*8], %rsp // Make room on stack to save registers
mov %rcx, (%rsp) // Save output pointer (P4) on stack
mov %rdi, %r8 // context (P1)
mov %rdx, %rdi // P3: save input pointer
shl $4, %esi // P2: esi byte key length * 16
mov %rbx, 1*8(%rsp) // Save registers
mov %rbp, 2*8(%rsp)
mov %r12, 3*8(%rsp)
// P1: context in r8
// P2: byte key length * 16 in esi
// P3: input pointer in rdi
// P4: output pointer in (rsp)
#endif /* GLADMAN_INTERFACE */
lea enc_tab(%rip), tptr
sub $fofs, kptr
// Load input block into registers
mov (%rdi), %eax
mov 1*4(%rdi), %ebx
mov 2*4(%rdi), %ecx
mov 3*4(%rdi), %edx
xor fofs(kptr), %eax
xor fofs+4(kptr), %ebx
xor fofs+8(kptr), %ecx
xor fofs+12(kptr), %edx
lea (kptr,%rsi), kptr
// Jump based on byte key length * 16:
cmp $[10*16], %esi
je 3f
cmp $[12*16], %esi
je 2f
cmp $[14*16], %esi
je 1f
mov $-1, %rax // error
jmp 4f
// Perform normal forward rounds
1: ff_rnd(%r9d, %r10d, %r11d, %r12d, 13)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 12)
2: ff_rnd(%r9d, %r10d, %r11d, %r12d, 11)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 10)
3: ff_rnd(%r9d, %r10d, %r11d, %r12d, 9)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 8)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 7)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 6)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 5)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 4)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 3)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 2)
ff_rnd(%r9d, %r10d, %r11d, %r12d, 1)
fl_rnd(%r9d, %r10d, %r11d, %r12d, 0)
// Copy results
mov (%rsp), %rbx
mov %r9d, (%rbx)
mov %r10d, 4(%rbx)
mov %r11d, 8(%rbx)
mov %r12d, 12(%rbx)
xor %rax, %rax
4: // Restore registers
mov 1*8(%rsp), %rbx
mov 2*8(%rsp), %rbp
mov 3*8(%rsp), %r12
add $[4*8], %rsp
Fix objtool: missing int3 after ret warning Resolve straight-line speculation warnings reported by objtool for x86_64 assembly on Linux when CONFIG_SLS is set. See the following LWN article for the complete details. https://lwn.net/Articles/877845/ Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #13528 Closes #13575
2022-06-20 23:36:21 +00:00
RET
Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
SET_SIZE(aes_encrypt_amd64)
/*
* OpenSolaris OS:
* void aes_decrypt_amd64(const aes_ks_t *ks, int Nr,
* const uint32_t pt[4], uint32_t ct[4])/
*
* Original interface:
* int aes_decrypt(const unsigned char *in,
* unsigned char *out, const aes_encrypt_ctx cx[1])/
*/
[icp] fpu and asm cleanup for linux Properly annotate functions and data section so that objtool does not complain when CONFIG_STACK_VALIDATION and CONFIG_FRAME_POINTER are enabled. Pass KERNELCPPFLAGS to assembler. Use kfpu_begin()/kfpu_end() to protect SIMD regions in Linux kernel. Reviewed-by: Tom Caputi <tcaputi@datto.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Gvozden Neskovic <neskovic@gmail.com> Closes #5872 Closes #5041
2017-03-07 20:59:31 +00:00
.data
.align 64
Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
dec_tab:
dec_vals(v8)
#ifdef LAST_ROUND_TABLES
// Last Round Tables:
dec_vals(w8)
#endif
[icp] fpu and asm cleanup for linux Properly annotate functions and data section so that objtool does not complain when CONFIG_STACK_VALIDATION and CONFIG_FRAME_POINTER are enabled. Pass KERNELCPPFLAGS to assembler. Use kfpu_begin()/kfpu_end() to protect SIMD regions in Linux kernel. Reviewed-by: Tom Caputi <tcaputi@datto.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Gvozden Neskovic <neskovic@gmail.com> Closes #5872 Closes #5041
2017-03-07 20:59:31 +00:00
ENTRY_NP(aes_decrypt_amd64)
Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
#ifdef GLADMAN_INTERFACE
// Original interface
sub $[4*8], %rsp // gnu/linux/opensolaris binary interface
mov %rsi, (%rsp) // output pointer (P2)
mov %rdx, %r8 // context (P3)
mov %rbx, 1*8(%rsp) // P1: input pointer in rdi
mov %rbp, 2*8(%rsp) // P2: output pointer in (rsp)
mov %r12, 3*8(%rsp) // P3: context in r8
movzx 4*KS_LENGTH(kptr), %esi // Get byte key length * 16
#else
// OpenSolaris OS interface
sub $[4*8], %rsp // Make room on stack to save registers
mov %rcx, (%rsp) // Save output pointer (P4) on stack
mov %rdi, %r8 // context (P1)
mov %rdx, %rdi // P3: save input pointer
shl $4, %esi // P2: esi byte key length * 16
mov %rbx, 1*8(%rsp) // Save registers
mov %rbp, 2*8(%rsp)
mov %r12, 3*8(%rsp)
// P1: context in r8
// P2: byte key length * 16 in esi
// P3: input pointer in rdi
// P4: output pointer in (rsp)
#endif /* GLADMAN_INTERFACE */
lea dec_tab(%rip), tptr
sub $rofs, kptr
// Load input block into registers
mov (%rdi), %eax
mov 1*4(%rdi), %ebx
mov 2*4(%rdi), %ecx
mov 3*4(%rdi), %edx
#ifdef AES_REV_DKS
mov kptr, %rdi
lea (kptr,%rsi), kptr
#else
lea (kptr,%rsi), %rdi
#endif
xor rofs(%rdi), %eax
xor rofs+4(%rdi), %ebx
xor rofs+8(%rdi), %ecx
xor rofs+12(%rdi), %edx
// Jump based on byte key length * 16:
cmp $[10*16], %esi
je 3f
cmp $[12*16], %esi
je 2f
cmp $[14*16], %esi
je 1f
mov $-1, %rax // error
jmp 4f
// Perform normal inverse rounds
1: ii_rnd(%r9d, %r10d, %r11d, %r12d, 13)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 12)
2: ii_rnd(%r9d, %r10d, %r11d, %r12d, 11)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 10)
3: ii_rnd(%r9d, %r10d, %r11d, %r12d, 9)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 8)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 7)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 6)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 5)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 4)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 3)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 2)
ii_rnd(%r9d, %r10d, %r11d, %r12d, 1)
il_rnd(%r9d, %r10d, %r11d, %r12d, 0)
// Copy results
mov (%rsp), %rbx
mov %r9d, (%rbx)
mov %r10d, 4(%rbx)
mov %r11d, 8(%rbx)
mov %r12d, 12(%rbx)
xor %rax, %rax
4: // Restore registers
mov 1*8(%rsp), %rbx
mov 2*8(%rsp), %rbp
mov 3*8(%rsp), %r12
add $[4*8], %rsp
Fix objtool: missing int3 after ret warning Resolve straight-line speculation warnings reported by objtool for x86_64 assembly on Linux when CONFIG_SLS is set. See the following LWN article for the complete details. https://lwn.net/Articles/877845/ Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #13528 Closes #13575
2022-06-20 23:36:21 +00:00
RET
Illumos Crypto Port module added to enable native encryption in zfs A port of the Illumos Crypto Framework to a Linux kernel module (found in module/icp). This is needed to do the actual encryption work. We cannot use the Linux kernel's built in crypto api because it is only exported to GPL-licensed modules. Having the ICP also means the crypto code can run on any of the other kernels under OpenZFS. I ended up porting over most of the internals of the framework, which means that porting over other API calls (if we need them) should be fairly easy. Specifically, I have ported over the API functions related to encryption, digests, macs, and crypto templates. The ICP is able to use assembly-accelerated encryption on amd64 machines and AES-NI instructions on Intel chips that support it. There are place-holder directories for similar assembly optimizations for other architectures (although they have not been written). Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #4329
2016-05-12 14:51:24 +00:00
SET_SIZE(aes_decrypt_amd64)
#endif /* lint || __lint */
icp: mark asm files with noexec stack If there is no explicit note in the .S files, the obj file will mark it as requiring an executable stack. This is unneeded and causes issues on hardened systems. More info: https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart Signed-off-by: Jason Zaman <jason@perfinion.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #4947 Closes #4962
2016-08-11 15:59:03 +00:00
#ifdef __ELF__
.section .note.GNU-stack,"",%progbits
#endif