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2a547338
编写于
9月 17, 2015
作者:
R
Rich Felker
浏览文件
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电子邮件补丁
差异文件
refactor some more dynamic linker load address computations
these were just missed in the previous commits.
上级
e6076c99
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
7 addition
and
7 deletion
+7
-7
src/ldso/dynlink.c
src/ldso/dynlink.c
+7
-7
未找到文件。
src/ldso/dynlink.c
浏览文件 @
2a547338
...
@@ -959,14 +959,14 @@ static void reloc_all(struct dso *p)
...
@@ -959,14 +959,14 @@ static void reloc_all(struct dso *p)
if
(
p
->
relocated
)
continue
;
if
(
p
->
relocated
)
continue
;
decode_vec
(
p
->
dynv
,
dyn
,
DYN_CNT
);
decode_vec
(
p
->
dynv
,
dyn
,
DYN_CNT
);
if
(
NEED_MIPS_GOT_RELOCS
)
if
(
NEED_MIPS_GOT_RELOCS
)
do_mips_relocs
(
p
,
(
void
*
)(
p
->
base
+
dyn
[
DT_PLTGOT
]));
do_mips_relocs
(
p
,
laddr
(
p
,
dyn
[
DT_PLTGOT
]));
do_relocs
(
p
,
(
void
*
)(
p
->
base
+
dyn
[
DT_JMPREL
]),
dyn
[
DT_PLTRELSZ
],
do_relocs
(
p
,
laddr
(
p
,
dyn
[
DT_JMPREL
]),
dyn
[
DT_PLTRELSZ
],
2
+
(
dyn
[
DT_PLTREL
]
==
DT_RELA
));
2
+
(
dyn
[
DT_PLTREL
]
==
DT_RELA
));
do_relocs
(
p
,
(
void
*
)(
p
->
base
+
dyn
[
DT_REL
]),
dyn
[
DT_RELSZ
],
2
);
do_relocs
(
p
,
laddr
(
p
,
dyn
[
DT_REL
]),
dyn
[
DT_RELSZ
],
2
);
do_relocs
(
p
,
(
void
*
)(
p
->
base
+
dyn
[
DT_RELA
]),
dyn
[
DT_RELASZ
],
3
);
do_relocs
(
p
,
laddr
(
p
,
dyn
[
DT_RELA
]),
dyn
[
DT_RELASZ
],
3
);
if
(
head
!=
&
ldso
&&
p
->
relro_start
!=
p
->
relro_end
&&
if
(
head
!=
&
ldso
&&
p
->
relro_start
!=
p
->
relro_end
&&
mprotect
(
p
->
base
+
p
->
relro_start
,
p
->
relro_end
-
p
->
relro_start
,
PROT_READ
)
mprotect
(
laddr
(
p
,
p
->
relro_start
)
,
p
->
relro_end
-
p
->
relro_start
,
PROT_READ
)
&&
errno
!=
ENOSYS
)
{
&&
errno
!=
ENOSYS
)
{
error
(
"Error relocating %s: RELRO protection failed: %m"
,
error
(
"Error relocating %s: RELRO protection failed: %m"
,
p
->
name
);
p
->
name
);
...
@@ -1193,7 +1193,7 @@ void __dls2(unsigned char *base, size_t *sp)
...
@@ -1193,7 +1193,7 @@ void __dls2(unsigned char *base, size_t *sp)
* instead of risking stack overflow. */
* instead of risking stack overflow. */
size_t
dyn
[
DYN_CNT
];
size_t
dyn
[
DYN_CNT
];
decode_vec
(
ldso
.
dynv
,
dyn
,
DYN_CNT
);
decode_vec
(
ldso
.
dynv
,
dyn
,
DYN_CNT
);
size_t
*
rel
=
(
void
*
)(
base
+
dyn
[
DT_REL
]);
size_t
*
rel
=
laddr
(
&
ldso
,
dyn
[
DT_REL
]);
size_t
rel_size
=
dyn
[
DT_RELSZ
];
size_t
rel_size
=
dyn
[
DT_RELSZ
];
size_t
symbolic_rel_cnt
=
0
;
size_t
symbolic_rel_cnt
=
0
;
apply_addends_to
=
rel
;
apply_addends_to
=
rel
;
...
@@ -1212,7 +1212,7 @@ void __dls2(unsigned char *base, size_t *sp)
...
@@ -1212,7 +1212,7 @@ void __dls2(unsigned char *base, size_t *sp)
* symbolically as a barrier against moving the address
* symbolically as a barrier against moving the address
* load across the above relocation processing. */
* load across the above relocation processing. */
struct
symdef
dls3_def
=
find_sym
(
&
ldso
,
"__dls3"
,
0
);
struct
symdef
dls3_def
=
find_sym
(
&
ldso
,
"__dls3"
,
0
);
((
stage3_func
)
(
ldso
.
base
+
dls3_def
.
sym
->
st_value
))(
sp
);
((
stage3_func
)
laddr
(
&
ldso
,
dls3_def
.
sym
->
st_value
))(
sp
);
}
}
/* Stage 3 of the dynamic linker is called with the dynamic linker/libc
/* Stage 3 of the dynamic linker is called with the dynamic linker/libc
...
...
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