mirror/upx
1
0
Fork 0
mirror of https://github.com/upx/upx synced 2025-09-28 19:06:07 +08:00
Code Issues Releases Wiki Activity

dos/exe: don't clear the dirty stack - DOS does not do this either

Browse Source
This commit is contained in:
Markus F.X.J. Oberhumer 2007-03-04 17:10:32 +01:00
parent 009caee82d
commit 7eb0b195b8
5 changed files with 896 additions and 864 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/p_exe.cpp
View File

@ -54,6 +54,7 @@ PackExe::PackExe(InputFile *f) :
COMPILE_TIME_ASSERT(sizeof(exe_header_t) == 32);
ih_exesize = ih_imagesize = ih_overlay = 0;
stack_for_lzma = 0;
use_clear_dirty_stack = false;
// disable lzma for "--brute" unless explicitly given "--lzma"
if (opt->all_methods_use_lzma && !opt->method_lzma_seen)
@ -157,7 +158,9 @@ void PackExe::buildLoader(const Filter *)
addLoader("LZMA_DEC00",
opt->small ? "LZMA_DEC10" : "LZMA_DEC20",
"LZMA_DEC30",
ph.u_len > 0xffff ? "LZMA_DEC31" : "",
use_clear_dirty_stack ? "LZMA_DEC31" : "",
"LZMA_DEC32",
ph.u_len > 0xffff ? "LZMA_DEC33" : "",
NULL
);
@ -174,7 +177,8 @@ void PackExe::buildLoader(const Filter *)
unsigned clear_dirty_stack_low = 0x10 + lsize0;
clear_dirty_stack_low = ALIGN_UP(clear_dirty_stack_low, 2u);
linker->defineSymbol("clear_dirty_stack_low", clear_dirty_stack_low);
if (use_clear_dirty_stack)
linker->defineSymbol("clear_dirty_stack_low", clear_dirty_stack_low);
relocateLoader();
const unsigned lsize = getLoaderSize();

1
src/p_exe.h
View File

@ -113,6 +113,7 @@ protected:
};
unsigned stack_for_lzma; // stack size required for lzma
bool use_clear_dirty_stack;
};

1687
src/stub/i086-dos16.exe.h
View File

File diff suppressed because it is too large Load Diff

9
src/stub/src/arch/i086/lzma_d.S
View File

@ -123,7 +123,7 @@ section LZMA_DEC20
section LZMA_DEC30
pop ds
#if 1
section LZMA_DEC31
// clear dirty stack
mov sp, bp
mov bx, offset clear_dirty_stack_low
@ -131,14 +131,13 @@ section LZMA_DEC30
1: push ax
cmp sp, bx
jnzs 1b
#endif
section LZMA_DEC32
mov sp, bp
mov di, offset lzma_u_len
ignore_reloc_overflow lzma_u_len
section LZMA_DEC31
section LZMA_DEC33
pop ax
push ax
add ax, offset lzma_u_len_segment

55
src/stub/tmp/i086-dos16.exe.bin.dump
View File

@ -75,23 +75,25 @@ Idx Name Size VMA LMA File off Algn Flags
70 ignore_reloc_overflow 00000008 00000000 00000000 0000036d 2**0 CONTENTS, RELOC, READONLY
71 LZMA_DEC10 000011a3 00000000 00000000 00000375 2**0 CONTENTS, READONLY
72 LZMA_DEC20 0000123b 00000000 00000000 00001518 2**0 CONTENTS, READONLY
73 LZMA_DEC30 00000012 00000000 00000000 00002753 2**0 CONTENTS, RELOC, READONLY
74 LZMA_DEC31 00000007 00000000 00000000 00002765 2**0 CONTENTS, RELOC, READONLY
75 EXEMAIN5 00000001 00000000 00000000 0000276c 2**0 CONTENTS, READONLY
76 EXEADJUS 00000007 00000000 00000000 0000276d 2**0 CONTENTS, READONLY
77 EXENOADJ 00000002 00000000 00000000 00002774 2**0 CONTENTS, READONLY
78 EXERELO1 0000001e 00000000 00000000 00002776 2**0 CONTENTS, RELOC, READONLY
79 EXEREL9A 00000012 00000000 00000000 00002794 2**0 CONTENTS, RELOC, READONLY
80 EXERELO2 00000004 00000000 00000000 000027a6 2**0 CONTENTS, READONLY
81 EXEREBIG 00000002 00000000 00000000 000027aa 2**0 CONTENTS, RELOC, READONLY
82 EXERELO3 00000002 00000000 00000000 000027ac 2**0 CONTENTS, RELOC, READONLY
83 EXEMAIN8 00000003 00000000 00000000 000027ae 2**0 CONTENTS, READONLY
84 DEVICEEND 00000013 00000000 00000000 000027b1 2**0 CONTENTS, READONLY
85 EXESTACK 00000006 00000000 00000000 000027c4 2**0 CONTENTS, RELOC, READONLY
86 EXESTASP 00000003 00000000 00000000 000027ca 2**0 CONTENTS, RELOC, READONLY
87 EXEJUMPF 00000005 00000000 00000000 000027cd 2**0 CONTENTS, RELOC, READONLY
88 EXERCSPO 00000004 00000000 00000000 000027d2 2**0 CONTENTS, RELOC, READONLY
89 EXERETIP 00000006 00000000 00000000 000027d6 2**0 CONTENTS, RELOC, READONLY
73 LZMA_DEC30 00000001 00000000 00000000 00002753 2**0 CONTENTS, READONLY
74 LZMA_DEC31 0000000c 00000000 00000000 00002754 2**0 CONTENTS, RELOC, READONLY
75 LZMA_DEC32 00000005 00000000 00000000 00002760 2**0 CONTENTS, RELOC, READONLY
76 LZMA_DEC33 00000007 00000000 00000000 00002765 2**0 CONTENTS, RELOC, READONLY
77 EXEMAIN5 00000001 00000000 00000000 0000276c 2**0 CONTENTS, READONLY
78 EXEADJUS 00000007 00000000 00000000 0000276d 2**0 CONTENTS, READONLY
79 EXENOADJ 00000002 00000000 00000000 00002774 2**0 CONTENTS, READONLY
80 EXERELO1 0000001e 00000000 00000000 00002776 2**0 CONTENTS, RELOC, READONLY
81 EXEREL9A 00000012 00000000 00000000 00002794 2**0 CONTENTS, RELOC, READONLY
82 EXERELO2 00000004 00000000 00000000 000027a6 2**0 CONTENTS, READONLY
83 EXEREBIG 00000002 00000000 00000000 000027aa 2**0 CONTENTS, RELOC, READONLY
84 EXERELO3 00000002 00000000 00000000 000027ac 2**0 CONTENTS, RELOC, READONLY
85 EXEMAIN8 00000003 00000000 00000000 000027ae 2**0 CONTENTS, READONLY
86 DEVICEEND 00000013 00000000 00000000 000027b1 2**0 CONTENTS, READONLY
87 EXESTACK 00000006 00000000 00000000 000027c4 2**0 CONTENTS, RELOC, READONLY
88 EXESTASP 00000003 00000000 00000000 000027ca 2**0 CONTENTS, RELOC, READONLY
89 EXEJUMPF 00000005 00000000 00000000 000027cd 2**0 CONTENTS, RELOC, READONLY
90 EXERCSPO 00000004 00000000 00000000 000027d2 2**0 CONTENTS, RELOC, READONLY
91 EXERETIP 00000006 00000000 00000000 000027d6 2**0 CONTENTS, RELOC, READONLY
SYMBOL TABLE:
00000000 l d DEVICEENTRY 00000000 DEVICEENTRY
00000000 l d COMPRESSED_LZMA_START 00000000 COMPRESSED_LZMA_START
@ -114,7 +116,7 @@ SYMBOL TABLE:
00000000 l d NRV2EEX3 00000000 NRV2EEX3
00000000 l d NRV2EEX9 00000000 NRV2EEX9
00000000 l d LZMA_DEC00 00000000 LZMA_DEC00
00000000 l d LZMA_DEC30 00000000 LZMA_DEC30
00000000 l d LZMA_DEC32 00000000 LZMA_DEC32
00000000 l d EXERELO1 00000000 EXERELO1
00000000 l d EXERELO2 00000000 EXERELO2
00000000 l d LZMADEVICE 00000000 LZMADEVICE
@ -169,7 +171,9 @@ SYMBOL TABLE:
00000000 l d ignore_reloc_overflow 00000000 ignore_reloc_overflow
00000000 l d LZMA_DEC10 00000000 LZMA_DEC10
00000000 l d LZMA_DEC20 00000000 LZMA_DEC20
00000000 l d LZMA_DEC30 00000000 LZMA_DEC30
00000000 l d LZMA_DEC31 00000000 LZMA_DEC31
00000000 l d LZMA_DEC33 00000000 LZMA_DEC33
00000000 l d EXEMAIN5 00000000 EXEMAIN5
00000000 l d EXEADJUS 00000000 EXEADJUS
00000000 l d EXENOADJ 00000000 EXENOADJ
@ -389,15 +393,18 @@ OFFSET TYPE VALUE
00000004 R_386_8 lzma_properties
00000005 R_386_8 LZMA_DEC00
00000006 R_386_8 lzma_u_len
00000007 R_386_8 LZMA_DEC30
RELOCATION RECORDS FOR [LZMA_DEC30]:
OFFSET TYPE VALUE
00000004 R_386_16 clear_dirty_stack_low
00000010 R_386_16 lzma_u_len
00000007 R_386_8 LZMA_DEC32
RELOCATION RECORDS FOR [LZMA_DEC31]:
OFFSET TYPE VALUE
00000003 R_386_16 clear_dirty_stack_low
RELOCATION RECORDS FOR [LZMA_DEC32]:
OFFSET TYPE VALUE
00000003 R_386_16 lzma_u_len
RELOCATION RECORDS FOR [LZMA_DEC33]:
OFFSET TYPE VALUE
00000003 R_386_16 lzma_u_len_segment
RELOCATION RECORDS FOR [EXERELO1]: