Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
openeuler
qemu
提交
102bf2c6
Q
qemu
项目概览
openeuler
/
qemu
通知
10
Star
0
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
0
列表
看板
标记
里程碑
合并请求
0
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
Q
qemu
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
0
Issue
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
提交
Issue看板
体验新版 GitCode,发现更多精彩内容 >>
提交
102bf2c6
编写于
8月 24, 2012
作者:
R
Richard Henderson
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
target-s390: Convert FLOGR
Signed-off-by:
N
Richard Henderson
<
rth@twiddle.net
>
上级
683bb9a8
变更
6
隐藏空白更改
内联
并排
Showing
6 changed file
with
53 addition
and
50 deletion
+53
-50
target-s390x/cc_helper.c
target-s390x/cc_helper.c
+8
-0
target-s390x/cpu.h
target-s390x/cpu.h
+2
-0
target-s390x/helper.h
target-s390x/helper.h
+1
-1
target-s390x/insn-data.def
target-s390x/insn-data.def
+3
-0
target-s390x/int_helper.c
target-s390x/int_helper.c
+3
-19
target-s390x/translate.c
target-s390x/translate.c
+36
-30
未找到文件。
target-s390x/cc_helper.c
浏览文件 @
102bf2c6
...
...
@@ -399,6 +399,11 @@ static uint32_t cc_calc_sla_64(uint64_t src, int shift)
return
2
;
}
static
uint32_t
cc_calc_flogr
(
uint64_t
dst
)
{
return
dst
?
2
:
0
;
}
static
uint32_t
do_calc_cc
(
CPUS390XState
*
env
,
uint32_t
cc_op
,
uint64_t
src
,
uint64_t
dst
,
uint64_t
vr
)
{
...
...
@@ -504,6 +509,9 @@ static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op,
case
CC_OP_SLA_64
:
r
=
cc_calc_sla_64
(
src
,
dst
);
break
;
case
CC_OP_FLOGR
:
r
=
cc_calc_flogr
(
dst
);
break
;
case
CC_OP_NZ_F32
:
r
=
set_cc_nz_f32
(
dst
);
...
...
target-s390x/cpu.h
浏览文件 @
102bf2c6
...
...
@@ -478,6 +478,7 @@ enum cc_op {
CC_OP_ICM
,
/* insert characters under mask */
CC_OP_SLA_32
,
/* Calculate shift left signed (32bit) */
CC_OP_SLA_64
,
/* Calculate shift left signed (64bit) */
CC_OP_FLOGR
,
/* find leftmost one */
CC_OP_MAX
};
...
...
@@ -521,6 +522,7 @@ static const char *cc_names[] = {
[
CC_OP_ICM
]
=
"CC_OP_ICM"
,
[
CC_OP_SLA_32
]
=
"CC_OP_SLA_32"
,
[
CC_OP_SLA_64
]
=
"CC_OP_SLA_64"
,
[
CC_OP_FLOGR
]
=
"CC_OP_FLOGR"
,
};
static
inline
const
char
*
cc_name
(
int
cc_op
)
...
...
target-s390x/helper.h
浏览文件 @
102bf2c6
...
...
@@ -69,7 +69,7 @@ DEF_HELPER_4(msdb, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_2
(
tceb
,
TCG_CALL_NO_RWG_SE
,
i32
,
i64
,
i64
)
DEF_HELPER_FLAGS_2
(
tcdb
,
TCG_CALL_NO_RWG_SE
,
i32
,
i64
,
i64
)
DEF_HELPER_FLAGS_3
(
tcxb
,
TCG_CALL_NO_RWG_SE
,
i32
,
i64
,
i64
,
i64
)
DEF_HELPER_
3
(
flogr
,
i32
,
env
,
i32
,
i64
)
DEF_HELPER_
FLAGS_1
(
clz
,
TCG_CALL_NO_RWG_SE
,
i64
,
i64
)
DEF_HELPER_2
(
sqeb
,
i64
,
env
,
i64
)
DEF_HELPER_2
(
sqdb
,
i64
,
env
,
i64
)
DEF_HELPER_3
(
sqxb
,
i64
,
env
,
i64
,
i64
)
...
...
target-s390x/insn-data.def
浏览文件 @
102bf2c6
...
...
@@ -220,6 +220,9 @@
/* EXTRACT FPC */
C(0xb38c, EFPC, RRE, Z, 0, 0, new, r1_32, efpc, 0)
/* FIND LEFTMOST ONE */
C(0xb983, FLOGR, RRE, EI, 0, r2_o, r1_P, 0, flogr, 0)
/* INSERT CHARACTER */
C(0x4300, IC, RX_a, Z, 0, m2_8u, 0, r1_8, mov2, 0)
C(0xe373, ICY, RXY_a, LD, 0, m2_8u, 0, r1_8, mov2, 0)
...
...
target-s390x/int_helper.c
浏览文件 @
102bf2c6
...
...
@@ -165,26 +165,10 @@ int64_t HELPER(nabs_i64)(int64_t val)
}
}
/* find leftmost one */
uint
32_t
HELPER
(
flogr
)(
CPUS390XState
*
env
,
uint32_t
r1
,
uint64_t
v2
)
/*
count leading zeros, for
find leftmost one */
uint
64_t
HELPER
(
clz
)(
uint64_t
v
)
{
uint64_t
res
=
0
;
uint64_t
ov2
=
v2
;
while
(
!
(
v2
&
0x8000000000000000ULL
)
&&
v2
)
{
v2
<<=
1
;
res
++
;
}
if
(
!
v2
)
{
env
->
regs
[
r1
]
=
64
;
env
->
regs
[
r1
+
1
]
=
0
;
return
0
;
}
else
{
env
->
regs
[
r1
]
=
res
;
env
->
regs
[
r1
+
1
]
=
ov2
&
~
(
0x8000000000000000ULL
>>
res
);
return
2
;
}
return
clz64
(
v
);
}
uint64_t
HELPER
(
cvd
)(
int32_t
bin
)
...
...
target-s390x/translate.c
浏览文件 @
102bf2c6
...
...
@@ -620,6 +620,7 @@ static void gen_op_calc_cc(DisasContext *s)
case
CC_OP_COMP_64
:
case
CC_OP_NZ_F32
:
case
CC_OP_NZ_F64
:
case
CC_OP_FLOGR
:
/* 1 argument */
gen_helper_calc_cc
(
cc_op
,
cpu_env
,
local_cc_op
,
dummy
,
cc_dst
,
dummy
);
break
;
...
...
@@ -852,6 +853,20 @@ static void disas_jcc(DisasContext *s, DisasCompare *c, uint32_t mask)
account_inline_branch
(
s
,
old_cc_op
);
break
;
case
CC_OP_FLOGR
:
switch
(
mask
&
0xa
)
{
case
8
:
/* src == 0 -> no one bit found */
cond
=
TCG_COND_EQ
;
break
;
case
2
:
/* src != 0 -> one bit found */
cond
=
TCG_COND_NE
;
break
;
default:
goto
do_dynamic
;
}
account_inline_branch
(
s
,
old_cc_op
);
break
;
default:
do_dynamic:
/* Calculate cc value. */
...
...
@@ -888,6 +903,7 @@ static void disas_jcc(DisasContext *s, DisasCompare *c, uint32_t mask)
case
CC_OP_LTGT0_64
:
case
CC_OP_NZ
:
case
CC_OP_FLOGR
:
c
->
u
.
s64
.
a
=
cc_dst
;
c
->
u
.
s64
.
b
=
tcg_const_i64
(
0
);
c
->
g1
=
true
;
...
...
@@ -1414,29 +1430,6 @@ static void disas_b3(CPUS390XState *env, DisasContext *s, int op, int m3,
#undef FP_HELPER
}
static
void
disas_b9
(
CPUS390XState
*
env
,
DisasContext
*
s
,
int
op
,
int
r1
,
int
r2
)
{
TCGv_i64
tmp
;
TCGv_i32
tmp32_1
;
LOG_DISAS
(
"disas_b9: op 0x%x r1 %d r2 %d
\n
"
,
op
,
r1
,
r2
);
switch
(
op
)
{
case
0x83
:
/* FLOGR R1,R2 [RRE] */
tmp
=
load_reg
(
r2
);
tmp32_1
=
tcg_const_i32
(
r1
);
gen_helper_flogr
(
cc_op
,
cpu_env
,
tmp32_1
,
tmp
);
set_cc_static
(
s
);
tcg_temp_free_i64
(
tmp
);
tcg_temp_free_i32
(
tmp32_1
);
break
;
default:
LOG_DISAS
(
"illegal b9 operation 0x%x
\n
"
,
op
);
gen_illegal_opcode
(
s
);
break
;
}
}
static
void
disas_s390_insn
(
CPUS390XState
*
env
,
DisasContext
*
s
)
{
unsigned
char
opc
;
...
...
@@ -1460,13 +1453,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
r2
=
insn
&
0xf
;
disas_b3
(
env
,
s
,
op
,
r3
,
r1
,
r2
);
break
;
case
0xb9
:
insn
=
ld_code4
(
env
,
s
->
pc
);
r1
=
(
insn
>>
4
)
&
0xf
;
r2
=
insn
&
0xf
;
op
=
(
insn
>>
16
)
&
0xff
;
disas_b9
(
env
,
s
,
op
,
r1
,
r2
);
break
;
default:
qemu_log_mask
(
LOG_UNIMP
,
"unimplemented opcode 0x%x
\n
"
,
opc
);
gen_illegal_opcode
(
s
);
...
...
@@ -2330,6 +2316,26 @@ static ExitStatus op_ex(DisasContext *s, DisasOps *o)
return
NO_EXIT
;
}
static
ExitStatus
op_flogr
(
DisasContext
*
s
,
DisasOps
*
o
)
{
/* We'll use the original input for cc computation, since we get to
compare that against 0, which ought to be better than comparing
the real output against 64. It also lets cc_dst be a convenient
temporary during our computation. */
gen_op_update1_cc_i64
(
s
,
CC_OP_FLOGR
,
o
->
in2
);
/* R1 = IN ? CLZ(IN) : 64. */
gen_helper_clz
(
o
->
out
,
o
->
in2
);
/* R1+1 = IN & ~(found bit). Note that we may attempt to shift this
value by 64, which is undefined. But since the shift is 64 iff the
input is zero, we still get the correct result after and'ing. */
tcg_gen_movi_i64
(
o
->
out2
,
0x8000000000000000ull
);
tcg_gen_shr_i64
(
o
->
out2
,
o
->
out2
,
o
->
out
);
tcg_gen_andc_i64
(
o
->
out2
,
cc_dst
,
o
->
out2
);
return
NO_EXIT
;
}
static
ExitStatus
op_icm
(
DisasContext
*
s
,
DisasOps
*
o
)
{
int
m3
=
get_field
(
s
->
fields
,
m3
);
...
...
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录