mirror of
https://github.com/upx/upx.git
synced 2024-11-23 04:39:59 +00:00
Style: start using correct IEC binary prefix (KiB, MiB, ...) - see
http://en.wikipedia.org/wiki/Binary_prefix for more details.
This commit is contained in:
parent
2c3e841d8a
commit
d453cc27a3
2
BUGS
2
BUGS
@ -28,7 +28,7 @@ dos/exe
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watcom/le
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---------
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* 16-bit selector alias fixups
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* 16-bit offset relocation for objects larger than 4 kB
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* 16-bit offset relocation for objects larger than 4 KiB
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* 16:16 fixups
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If you need any of the above (they're very rare), send us an URL of a
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2
NEWS
2
NEWS
@ -4,7 +4,7 @@ User visible changes for UPX
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Changes in 3.03 (27 Apr 2008):
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* implement cache flushing for PowerPC (esp. model 440)
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* fix cache flushing on MIPS (>3MB compressed, or with holes)
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* fix cache flushing on MIPS (>3 MiB compressed, or with holes)
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* fix MIPS big-endian
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* bug fixes
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@ -46,8 +46,8 @@ may not be used to take the address of a function.
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The address 0x00400000 was chosen to be out of the way of the usual
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load address 0x08048000, and to minimize fragmentation in kernel
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page tables; one page of page tables covers 4MB. The address
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0x00401000 was chosen as 1 page up from a 64KB boundary, to
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page tables; one page of page tables covers 4 MiB. The address
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0x00401000 was chosen as 1 page up from a 64 KiB boundary, to
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make the startup code and its constants smaller.
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Decompression of the executable begins by decompressing the Elf32_Ehdr
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@ -108,14 +108,14 @@ then skip another one - the unfiltering process needs some information
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to be able to reverse the filtering.
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UPX uses the following idea, which works nicely. First we assume that
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the size of the area that should be filtered is less than 16MB. Then
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the size of the area that should be filtered is less than 16 MiB. Then
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UPX scans over this area and keeps a record of the bytes that are
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following the 0xE8 bytes. If we are lucky, there will be bytes that
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were not found following 0xE8. These bytes are our candidates to be
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used as markers.
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Do you still remember that we assumed that the size of scanned area is
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less than 16MB? Well, this means that when we process a real call, the
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less than 16 MiB? Well, this means that when we process a real call, the
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resulting offset will be less than 0x00FFFFFF too. So the MSB is always
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0x00. Which is a nice place to store our marker. Of course we should
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reverse the byte order in the resulting offset - so this marker will
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18
doc/upx.pod
18
doc/upx.pod
@ -51,8 +51,8 @@ B<UPX> is a versatile executable packer with the following features:
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- excellent compression ratio: compresses better than zip/gzip,
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use UPX to decrease the size of your distribution !
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- very fast decompression: about 10 MB/sec on an ancient Pentium 133,
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about 200 MB/sec on an Athlon XP 2000+.
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- very fast decompression: about 10 MiB/sec on an ancient Pentium 133,
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about 200 MiB/sec on an Athlon XP 2000+.
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- no memory overhead for your compressed executables for most of the
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supported formats
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@ -153,7 +153,7 @@ as compared to the first decompressed version.]
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B<UPX> offers ten different compression levels from B<-1> to B<-9>,
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and B<--best>. The default compression level is B<-8> for files
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smaller than 512 kB, and B<-7> otherwise.
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smaller than 512 KiB, and B<-7> otherwise.
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=over 4
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@ -349,7 +349,7 @@ Extra options available for this executable format:
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First of all, it is recommended to use B<UPX> *instead* of B<strip>. strip has
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the very bad habit of replacing your stub with its own (outdated) version.
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Additionally B<UPX> corrects a bug/feature in strip v2.8.x: it
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will fix the 4 KByte alignment of the stub.
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will fix the 4 KiB alignment of the stub.
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B<UPX> includes the full functionality of stubify. This means it will
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automatically stubify your COFF files. Use the option B<--coff> to
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@ -660,8 +660,8 @@ Specific drawbacks:
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- Because of temporary decompression to disk the decompression speed
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is not as fast as with the other executable formats. Still, I can see
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no noticeable delay when starting programs like my ~3 MB emacs (which
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is less than 1 MB when compressed :-).
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no noticeable delay when starting programs like my ~3 MiB emacs (which
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is less than 1 MiB when compressed :-).
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Extra options available for this executable format:
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@ -681,7 +681,7 @@ nostalgic feelings of one of the authors.
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Packed programs will be byte-identical to the original after uncompression,
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until further notice.
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Maximum uncompressed size: ~1.89 / ~7.60 Mbytes.
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Maximum uncompressed size: ~1.89 / ~7.60 MiB.
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Notes:
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@ -708,7 +708,7 @@ Extra options available for this executable format:
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--8-bit Uses 8 bit size compression [default: 32 bit]
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--8mb-ram PSone has 8 MB ram available [default: 2 MB]
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--8mib-ram PSone has 8 MiB ram available [default: 2 MiB]
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--boot-only This format is for main exes and CD-Mastering only !
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It may slightly improve the compression ratio,
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@ -838,7 +838,7 @@ must end with ".scr" (as screensavers are handled slightly different
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than normal exe files).
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UPX compressed PE files have some minor memory overhead (usually in the
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10 - 30 kbytes range) which can be seen by specifying the "-i" command
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10 - 30 KiB range) which can be seen by specifying the "-i" command
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line switch during compression.
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Extra options available for this executable format:
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@ -276,7 +276,7 @@ int upx_lzma_compress ( const upx_bytep src, unsigned src_len,
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#if 0
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// DEBUG - set sizes so that we use a maxmimum amount of stack.
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// These settings cause res->num_probs == 3147574, i.e. we will
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// need about 6 MB of stack during runtime decompression.
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// need about 6 MiB of stack during runtime decompression.
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pr[1].uintVal = 4;
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pr[2].uintVal = 8;
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#endif
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@ -47,7 +47,7 @@ static int F(Filter *f)
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unsigned calls = 0, noncalls = 0, noncalls2 = 0;
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unsigned lastnoncall = size, lastcall = 0;
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// find a 16MB large empty address space
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// find a 16 MiB large empty address space
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{
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unsigned char buf[256];
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memset(buf,0,256);
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@ -51,7 +51,7 @@ static int F(Filter *f)
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unsigned calls = 0, noncalls = 0, noncalls2 = 0;
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unsigned lastnoncall = size, lastcall = 0;
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// find a 16MB large empty address space
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// find a 16 MiB large empty address space
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{
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unsigned char buf[256];
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memset(buf,0,256);
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@ -123,8 +123,8 @@ static int F(Filter *f)
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N_MRU : 0;
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#endif //}
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// FIXME: We must fit into 8MB because we steal one bit.
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// find a 16MB large empty address space
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// FIXME: We must fit into 8 MiB because we steal one bit.
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// find a 16 MiB large empty address space
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{
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int which;
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unsigned char buf[256];
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@ -52,7 +52,7 @@ static int F(Filter *f)
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unsigned calls = 0, noncalls = 0, noncalls2 = 0;
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unsigned lastnoncall = size, lastcall = 0;
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// find a 16MB large empty address space
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// find a 16 MiB large empty address space
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{
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unsigned char buf[256];
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memset(buf,0,256);
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@ -263,7 +263,7 @@ void show_help(int verbose)
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fg = con_fg(f,fg);
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con_fprintf(f,
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" --8-bit uses 8 bit size compression [default: 32 bit]\n"
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" --8mb-ram 8 megabyte memory limit [default: 2 mb]\n"
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" --8mib-ram 8 megabyte memory limit [default: 2 MiB]\n"
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" --boot-only disables client/host transfer compatibility\n"
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" --no-align don't align to 2048 bytes [enables: --console-run]\n"
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"\n");
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@ -881,7 +881,7 @@ static int do_option(int optc, const char *arg)
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opt->ps1_exe.do_8bit = true;
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break;
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case 673:
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opt->ps1_exe.do_8mb = false;
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opt->ps1_exe.do_8mib = false;
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break;
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case '\0':
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@ -1045,6 +1045,7 @@ static const struct mfx_option longopts[] =
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{"boot-only", 0x10, 0, 670},
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{"no-align", 0x10, 0, 671},
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{"8-bit", 0x10, 0, 672},
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{"8mib-ram", 0x10, 0, 673},
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{"8mb-ram", 0x10, 0, 673},
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// mp (meta) options
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@ -134,7 +134,7 @@ struct options_t {
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bool boot_only;
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bool no_align;
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bool do_8bit;
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bool do_8mb;
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bool do_8mib;
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} ps1_exe;
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struct {
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unsigned blocksize;
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@ -714,7 +714,7 @@ void PackArmPe::pack(OutputFile *fo)
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// limit stack size needed for runtime decompression
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upx_compress_config_t cconf; cconf.reset();
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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compressWithFilters(&ft, 2048, &cconf, filter_strategy,
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ih.codebase, rvamin, 0, NULL, 0);
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// info: see buildLoader()
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@ -898,7 +898,7 @@ void PackArmPe::pack(OutputFile *fo)
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// set_le32(ibuf + ic,get_le32("UPX "));
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ibuf.clear(0, oh.filealign);
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info("Image size change: %u -> %u kBytes",
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info("Image size change: %u -> %u KiB",
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ih.imagesize / 1024, oh.imagesize / 1024);
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infoHeader("[Writing compressed file]");
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@ -303,7 +303,7 @@ void PackDjgpp2::pack(OutputFile *fo)
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// compress
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upx_compress_config_t cconf; cconf.reset();
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// limit stack size needed for runtime decompression
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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compressWithFilters(&ft, 512, &cconf);
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// patch coff header #2
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@ -506,7 +506,7 @@ void PackExe::pack(OutputFile *fo)
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// compress (max_match = 8192)
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upx_compress_config_t cconf; cconf.reset();
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cconf.conf_ucl.max_match = MAXMATCH;
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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compressWithFilters(&ft, 32, &cconf);
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if (M_IS_NRV2B(ph.method) || M_IS_NRV2D(ph.method) || M_IS_NRV2E(ph.method))
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@ -95,7 +95,7 @@ PackPs1::PackPs1(InputFile *f) :
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COMPILE_TIME_ASSERT(SZ_IH_BKUP == 40)
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fdata_size = file_size - PS_HDR_SIZE;
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ram_size = !opt->ps1_exe.do_8mb ? 0x200000 : 0x800000;
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ram_size = !opt->ps1_exe.do_8mib ? 0x200000 : 0x800000;
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}
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const int *PackPs1::getCompressionMethods(int method, int level) const
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@ -500,7 +500,7 @@ void PackPs1::pack(OutputFile *fo)
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// compress (max_match = 65535)
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upx_compress_config_t cconf; cconf.reset();
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cconf.conf_ucl.max_match = 65535;
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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compressWithFilters(&ft, sa_cnt, &cconf);
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if (overlap)
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@ -242,7 +242,7 @@ void PackTmt::pack(OutputFile *fo)
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// compress
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upx_compress_config_t cconf; cconf.reset();
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// limit stack size needed for runtime decompression
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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compressWithFilters(&ft, 512, &cconf);
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const unsigned lsize = getLoaderSize();
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@ -507,7 +507,7 @@ void PackTos::pack(OutputFile *fo)
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// compress (max_match = 65535)
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upx_compress_config_t cconf; cconf.reset();
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cconf.conf_ucl.max_match = 65535;
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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compressWithFilters(&ft, 512, &cconf);
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//
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@ -269,7 +269,7 @@ void PackVmlinuxBase<T>::pack(OutputFile *fo)
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upx_compress_config_t cconf; cconf.reset();
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// limit stack size needed for runtime decompression
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
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unsigned ppc32_extra = 0;
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if (Ehdr::EM_PPC==my_e_machine) {
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@ -837,7 +837,7 @@ const int *PackVmlinuxPPC32::getFilters() const
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bool PackVmlinuxI386::is_valid_e_entry(Addr e_entry)
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{
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return 0==(0x000fffff & e_entry); // entry on whole 1MB
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return 0==(0x000fffff & e_entry); // entry on whole 1 MiB
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}
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@ -1390,8 +1390,8 @@ bool PackVmlinuxAMD64::has_valid_vmlinux_head()
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// pushl $0
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// pushl $ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED
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// pushl $ PROT_EXEC | PROT_WRITE | PROT_READ
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// pushl $0x600000 # 6MB length
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// pushl $0x100000 # 1MB address
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// pushl $0x600000 # 6 MiB length
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// pushl $0x100000 # 1 MiB address
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// call mmap
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// leal -0x9000(%esp),%esi # expect "lea 0x9000(%esi),%esp" later
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///* Fall into .text of upx-compressed vmlinux. */
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@ -1440,7 +1440,7 @@ const int *PackVmlinuxAMD64::getFilters() const
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bool PackVmlinuxAMD64::is_valid_e_entry(Addr e_entry)
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{
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return 0x200000<=e_entry; // 2MB
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return 0x200000<=e_entry; // 2 MiB
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}
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Linker* PackVmlinuxAMD64::newLinker() const
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|
@ -193,14 +193,14 @@ int PackVmlinuzI386::decompressKernel()
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}
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// Find "ljmp $__BOOT_CS,$__PHYSICAL_START" if any.
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if (0==memcmp("\xEA\x00\x00", p, 3) && 0==(0xf & p[3]) && 0==p[4]) {
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/* whole megabyte < 16MB */
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/* whole megabyte < 16 MiB */
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physical_start = get_te32(1+ p);
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break;
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}
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}
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if (base && relocated) {
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p = base + relocated;
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for (int j= 0; j < 0x200; ++j, ++p) {
|
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for (j = 0; j < 0x200; ++j, ++p) {
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if (0==memcmp("\x01\x9c\x0b", p, 3) // addl %ebx,d32(%ebx,%ecx)
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) {
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page_offset = 0u - get_te32(3+ p);
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@ -392,7 +392,7 @@ void PackVmlinuzI386::pack(OutputFile *fo)
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// compress
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upx_compress_config_t cconf; cconf.reset();
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// limit stack size needed for runtime decompression
|
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
|
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
|
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compressWithFilters(&ft, 512, &cconf);
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const unsigned lsize = getLoaderSize();
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@ -611,7 +611,7 @@ int PackVmlinuzI386::canUnpack()
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void PackVmlinuzI386::unpack(OutputFile *fo)
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{
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// no uncompression support for this format, so that
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// it is possible to remove the original deflate code (>10KB)
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// it is possible to remove the original deflate code (>10 KiB)
|
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|
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// FIXME: but we could write the uncompressed "vmlinux" image
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|
||||
|
@ -1037,7 +1037,7 @@ void PackW32Pe::pack(OutputFile *fo)
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// set_le32(ibuf + ic,get_le32("UPX "));
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ibuf.clear(0, oh.filealign);
|
||||
|
||||
info("Image size change: %u -> %u kBytes",
|
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info("Image size change: %u -> %u KiB",
|
||||
ih.imagesize / 1024, oh.imagesize / 1024);
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||||
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||||
infoHeader("[Writing compressed file]");
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|
@ -433,7 +433,7 @@ void PackWcle::encodeImage(Filter *ft)
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// prepare filter [already done]
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// compress
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upx_compress_config_t cconf; cconf.reset();
|
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cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28KB stack
|
||||
cconf.conf_lzma.max_num_probs = 1846 + (768 << 4); // ushort: ~28 KiB stack
|
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compressWithFilters(ibuf, isize,
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oimage + RESERVED,
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ibuf + ft->addvalue, ft->buf_len,
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||||
|
@ -225,7 +225,7 @@ unfold:
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||||
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||||
/* Get some pages. If small, then get 1 page located just after the end
|
||||
of the first PT_LOAD of the compressed program. This will still be below
|
||||
all of the uncompressed program. If large (>=3MB uncompressed), then enough
|
||||
all of the uncompressed program. If large (>=3 MiB uncompressed), then enough
|
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to duplicate the entire compressed PT_LOAD, plus 1 page, located just after
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the brk() of the _un_compressed program. The address and length are pre-
|
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calculated by PackLinuxElf64amd::defineSymbols().
|
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|
@ -56,7 +56,7 @@ decompress_kernel: # (char *out, char *tmp, char *tmp_end, int arch_id)
|
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// Value stored from r1 to memory will be overwritten by outsize.
|
||||
stmdb r1!,{r0,r1,r2,r3,sp} // &indata, space, &outdata, arch_id, sp_in
|
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loadcon8 3,METHOD // mov r3,#METHOD
|
||||
mov sp,r1 // switch stacks to tmp_end area (64KB)
|
||||
mov sp,r1 // switch stacks to tmp_end area (64 KiB)
|
||||
ldr r1,1f // insize
|
||||
str r3,[sp,#-4]! // method
|
||||
ldr r3,2f // outsize
|
||||
|
@ -99,7 +99,7 @@ section EXEENTRY
|
||||
push ds
|
||||
.byte 0xa9
|
||||
do_copy:
|
||||
mov ch, 0x80 /* 64 kbyte */
|
||||
mov ch, 0x80 /* 64 KiB */
|
||||
mov ax, cs
|
||||
addaxds:
|
||||
add ax, offset source_segment /* MSB is referenced by the "sub" below */
|
||||
|
@ -38,7 +38,7 @@ PHDRS
|
||||
}
|
||||
SECTIONS
|
||||
{
|
||||
/* 0x00c01000: 12MB+4KB for Fedora Core 5 vDSO at 0xc00000 */
|
||||
/* 0x00c01000: 12 MiB + 4 KiB for Fedora Core 5 vDSO at 0xc00000 */
|
||||
. = 0x00c01000 + SIZEOF_HEADERS + 12; /* 12==sizeof(l_info) */
|
||||
.text : {
|
||||
*(.text)
|
||||
|
@ -159,7 +159,7 @@ setcursor:
|
||||
mov al,15; call outb_p; inc edx
|
||||
mov al,cl
|
||||
// jmp outb_p
|
||||
|
||||
|
||||
outb_p:
|
||||
outb dx,al
|
||||
call 0f; 0: // insure minimum delay between 'outb'
|
||||
|
@ -371,7 +371,7 @@ umax(unsigned a, unsigned b)
|
||||
// OpenBSD 3.9 wants all .text from all modules together, then (above that)
|
||||
// all .data from all modules together, in order to maximize the effectiveness
|
||||
// of lowering the segment limit on %cs as an implementation of "no-execute
|
||||
// .data". Thus OpenBSD 3.9 puts a gap of 0x20000000 (512MB) between the
|
||||
// .data". Thus OpenBSD 3.9 puts a gap of 0x20000000 (512 MiB) between the
|
||||
// origins of .text and .data in each module. So, mapping ET_DYN must "level"
|
||||
// the excursion in .text and .data of anything which preceeded it,
|
||||
// then add the new PT_LOAD.
|
||||
|
@ -281,7 +281,7 @@ unfold: // s7= &decompress; s6= &b_info(fold); s5= sz_pack2
|
||||
|
||||
/* Get some pages. If small, then get 1 page located just after the end
|
||||
of the first PT_LOAD of the compressed program. This will still be below
|
||||
all of the uncompressed program. If large (>=3MB uncompressed), then enough
|
||||
all of the uncompressed program. If large (>=3 MiB uncompressed), then enough
|
||||
to duplicate the entire compressed PT_LOAD, plus 1 page, located just after
|
||||
the brk() of the _un_compressed program. The address and length are pre-
|
||||
calculated by PackLinuxElf64amd::defineSymbols().
|
||||
|
@ -71,7 +71,7 @@ L90:
|
||||
lwz a1,-8(r31) # offset to {l_info; p_info; b_info}
|
||||
subf a0,a1,r31 # &l_info
|
||||
lwz a3,sz_unc+sz_p_info+sz_l_info(a0) # sz_mach_headers
|
||||
cmpli 0,a3,2048; bgt L100; li a3,2048 # at least 2KB for /usr/lib/dyld
|
||||
cmpli 0,a3,2048; bgt L100; li a3,2048 # at least 2 KiB for /usr/lib/dyld
|
||||
L100:
|
||||
movr r29,sp # remember for restoring later
|
||||
subf sp,a3,sp # alloca
|
||||
|
Loading…
Reference in New Issue
Block a user