OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/riscv: rvk: add support for zknd/zkne extension in RV32

Browse Source 
- add aes32esmi, aes32esi, aes32dsmi and aes32dsi instructions

Co-authored-by: Zewen Ye <lustrew@foxmail.com>
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220423023510.30794-7-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Weiwei Li 2022-04-23 10:35:02 +08:00 committed by Alistair Francis
parent c29da5a7fe
commit 68d19b58f4
6 changed files with 196 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

105
target/riscv/crypto_helper.c Normal file
View File

@ -0,0 +1,105 @@
/*
* RISC-V Crypto Emulation Helpers for QEMU.
*
* Copyright (c) 2021 Ruibo Lu, luruibo2000@163.com
* Copyright (c) 2021 Zewen Ye, lustrew@foxmail.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "crypto/aes.h"
#include "crypto/sm4.h"
#define AES_XTIME(a) \
((a << 1) ^ ((a & 0x80) ? 0x1b : 0))
#define AES_GFMUL(a, b) (( \
(((b) & 0x1) ? (a) : 0) ^ \
(((b) & 0x2) ? AES_XTIME(a) : 0) ^ \
(((b) & 0x4) ? AES_XTIME(AES_XTIME(a)) : 0) ^ \
(((b) & 0x8) ? AES_XTIME(AES_XTIME(AES_XTIME(a))) : 0)) & 0xFF)
static inline uint32_t aes_mixcolumn_byte(uint8_t x, bool fwd)
{
uint32_t u;
if (fwd) {
u = (AES_GFMUL(x, 3) << 24) | (x << 16) | (x << 8) |
(AES_GFMUL(x, 2) << 0);
} else {
u = (AES_GFMUL(x, 0xb) << 24) | (AES_GFMUL(x, 0xd) << 16) |
(AES_GFMUL(x, 0x9) << 8) | (AES_GFMUL(x, 0xe) << 0);
}
return u;
}
#define sext32_xlen(x) (target_ulong)(int32_t)(x)
static inline target_ulong aes32_operation(target_ulong shamt,
target_ulong rs1, target_ulong rs2,
bool enc, bool mix)
{
uint8_t si = rs2 >> shamt;
uint8_t so;
uint32_t mixed;
target_ulong res;
if (enc) {
so = AES_sbox[si];
if (mix) {
mixed = aes_mixcolumn_byte(so, true);
} else {
mixed = so;
}
} else {
so = AES_isbox[si];
if (mix) {
mixed = aes_mixcolumn_byte(so, false);
} else {
mixed = so;
}
}
mixed = rol32(mixed, shamt);
res = rs1 ^ mixed;
return sext32_xlen(res);
}
target_ulong HELPER(aes32esmi)(target_ulong rs1, target_ulong rs2,
target_ulong shamt)
{
return aes32_operation(shamt, rs1, rs2, true, true);
}
target_ulong HELPER(aes32esi)(target_ulong rs1, target_ulong rs2,
target_ulong shamt)
{
return aes32_operation(shamt, rs1, rs2, true, false);
}
target_ulong HELPER(aes32dsmi)(target_ulong rs1, target_ulong rs2,
target_ulong shamt)
{
return aes32_operation(shamt, rs1, rs2, false, true);
}
target_ulong HELPER(aes32dsi)(target_ulong rs1, target_ulong rs2,
target_ulong shamt)
{
return aes32_operation(shamt, rs1, rs2, false, false);
}
#undef sext32_xlen

6
target/riscv/helper.h
View File

@ -1112,3 +1112,9 @@ DEF_HELPER_5(divu_i128, tl, env, tl, tl, tl, tl)
DEF_HELPER_5(divs_i128, tl, env, tl, tl, tl, tl)
DEF_HELPER_5(remu_i128, tl, env, tl, tl, tl, tl)
DEF_HELPER_5(rems_i128, tl, env, tl, tl, tl, tl)
/* Crypto functions */
DEF_HELPER_FLAGS_3(aes32esmi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl)
DEF_HELPER_FLAGS_3(aes32esi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl)
DEF_HELPER_FLAGS_3(aes32dsmi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl)
DEF_HELPER_FLAGS_3(aes32dsi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl)

11
target/riscv/insn32.decode
View File

@ -35,6 +35,7 @@
%imm_b 31:s1 7:1 25:6 8:4 !function=ex_shift_1
%imm_j 31:s1 12:8 20:1 21:10 !function=ex_shift_1
%imm_u 12:s20 !function=ex_shift_12
%imm_bs 30:2 !function=ex_shift_3
# Argument sets:
&empty
@ -52,6 +53,7 @@
&rmr vm rd rs2
&r2nfvm vm rd rs1 nf
&rnfvm vm rd rs1 rs2 nf
&k_aes shamt rs2 rs1 rd
# Formats 32:
@r ....... ..... ..... ... ..... ....... &r %rs2 %rs1 %rd
@ -89,6 +91,8 @@
@sfence_vma ....... ..... ..... ... ..... ....... %rs2 %rs1
@sfence_vm ....... ..... ..... ... ..... ....... %rs1
@k_aes .. ..... ..... ..... ... ..... ....... &k_aes shamt=%imm_bs %rs2 %rs1 %rd
# Formats 64:
@sh5 ....... ..... ..... ... ..... ....... &shift shamt=%sh5 %rs1 %rd
@ -834,3 +838,10 @@ sfence_w_inval 0001100 00000 00000 000 00000 1110011
sfence_inval_ir 0001100 00001 00000 000 00000 1110011
hinval_vvma 0010011 ..... ..... 000 00000 1110011 @hfence_vvma
hinval_gvma 0110011 ..... ..... 000 00000 1110011 @hfence_gvma
# *** RV32 Zknd Standard Extension ***
aes32dsmi .. 10111 ..... ..... 000 ..... 0110011 @k_aes
aes32dsi .. 10101 ..... ..... 000 ..... 0110011 @k_aes
# *** RV32 Zkne Standard Extension ***
aes32esmi .. 10011 ..... ..... 000 ..... 0110011 @k_aes
aes32esi .. 10001 ..... ..... 000 ..... 0110011 @k_aes

71
target/riscv/insn_trans/trans_rvk.c.inc Normal file
View File

@ -0,0 +1,71 @@
/*
* RISC-V translation routines for the Zk[nd,ne,nh,sed,sh] Standard Extension.
*
* Copyright (c) 2021 Ruibo Lu, luruibo2000@163.com
* Copyright (c) 2021 Zewen Ye, lustrew@foxmail.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define REQUIRE_ZKND(ctx) do { \
if (!ctx->cfg_ptr->ext_zknd) { \
return false; \
} \
} while (0)
#define REQUIRE_ZKNE(ctx) do { \
if (!ctx->cfg_ptr->ext_zkne) { \
return false; \
} \
} while (0)
static bool gen_aes32_sm4(DisasContext *ctx, arg_k_aes *a,
void (*func)(TCGv, TCGv, TCGv, TCGv))
{
TCGv shamt = tcg_constant_tl(a->shamt);
TCGv dest = dest_gpr(ctx, a->rd);
TCGv src1 = get_gpr(ctx, a->rs1, EXT_NONE);
TCGv src2 = get_gpr(ctx, a->rs2, EXT_NONE);
func(dest, src1, src2, shamt);
gen_set_gpr(ctx, a->rd, dest);
return true;
}
static bool trans_aes32esmi(DisasContext *ctx, arg_aes32esmi *a)
{
REQUIRE_32BIT(ctx);
REQUIRE_ZKNE(ctx);
return gen_aes32_sm4(ctx, a, gen_helper_aes32esmi);
}
static bool trans_aes32esi(DisasContext *ctx, arg_aes32esi *a)
{
REQUIRE_32BIT(ctx);
REQUIRE_ZKNE(ctx);
return gen_aes32_sm4(ctx, a, gen_helper_aes32esi);
}
static bool trans_aes32dsmi(DisasContext *ctx, arg_aes32dsmi *a)
{
REQUIRE_32BIT(ctx);
REQUIRE_ZKND(ctx);
return gen_aes32_sm4(ctx, a, gen_helper_aes32dsmi);
}
static bool trans_aes32dsi(DisasContext *ctx, arg_aes32dsi *a)
{
REQUIRE_32BIT(ctx);
REQUIRE_ZKND(ctx);
return gen_aes32_sm4(ctx, a, gen_helper_aes32dsi);
}

3
target/riscv/meson.build
View File

@ -19,7 +19,8 @@ riscv_ss.add(files(
'vector_helper.c',
'bitmanip_helper.c',
'translate.c',
'm128_helper.c'
'm128_helper.c',
'crypto_helper.c'
))
riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'), if_false: files('kvm-stub.c'))

1
target/riscv/translate.c
View File

@ -1007,6 +1007,7 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
#include "insn_trans/trans_rvv.c.inc"
#include "insn_trans/trans_rvb.c.inc"
#include "insn_trans/trans_rvzfh.c.inc"
#include "insn_trans/trans_rvk.c.inc"
#include "insn_trans/trans_privileged.c.inc"
#include "insn_trans/trans_svinval.c.inc"
#include "insn_trans/trans_xventanacondops.c.inc"