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new option "--ptinterp" for linux/elf386 compressing PT_INTERP file

Browse Source 
p_lx_elf.cpp options.h main.cpp

committer: jreiser <jreiser> 1032629299 +0000
This commit is contained in:
John Reiser 2002-09-21 17:28:19 +00:00
parent 8ad3d01d81
commit 124cdfda37
3 changed files with 20 additions and 1 deletions
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4
src/main.cpp
View File

@ -692,6 +692,9 @@ static int do_option(int optc, const char *arg)
if (mfx_optarg && mfx_optarg[0]) if (mfx_optarg && mfx_optarg[0])
set_script_name(mfx_optarg,1); set_script_name(mfx_optarg,1);
break; break;
case 663:
opt->unix.ptinterp = true;
break;
case 670: case 670:
opt->psx.no_align = true; opt->psx.no_align = true;
break; break;
@ -802,6 +805,7 @@ static const struct mfx_option longopts[] =
#if 0 #if 0
{"script", 0x31, 0, 662}, // --script= {"script", 0x31, 0, 662}, // --script=
#endif #endif
{"ptinterp", 0, 0, 663}, // linux/elf386 PT_INTERP program
// watcom/le // watcom/le
{"le", 0, 0, 620}, // produce LE output {"le", 0, 0, 620}, // produce LE output
// win32/pe // win32/pe

1
src/options.h
View File

@ -114,6 +114,7 @@ struct options_t {
struct { struct {
unsigned blocksize; unsigned blocksize;
bool force_execve; // force the linux/386 execve format bool force_execve; // force the linux/386 execve format
bool ptinterp; // is PT_INTERP, so don't adjust auxv_t
enum { SCRIPT_MAX = 32 }; enum { SCRIPT_MAX = 32 };
const char *script_name; const char *script_name;
} unix; } unix;

16
src/p_lx_elf.cpp
View File

@ -78,9 +78,23 @@ PackLinuxI386elf::getFilters() const
int int
PackLinuxI386elf::buildLoader(const Filter *ft) PackLinuxI386elf::buildLoader(const Filter *ft)
{ {
unsigned char tmp[sizeof(linux_i386elf_fold)];
memcpy(tmp, linux_i386elf_fold, sizeof(linux_i386elf_fold));
if (opt->unix.ptinterp) {
unsigned j;
for (j = 0; j < sizeof(linux_i386elf_fold)-1; ++j) {
if (0x60==tmp[ j]
&& 0x47==tmp[1+j] ) {
/* put INC EDI before PUSHA: inhibits auxv_up for PT_INTERP */
tmp[ j] = 0x47;
tmp[1+j] = 0x60;
break;
}
}
}
return buildLinuxLoader( return buildLinuxLoader(
linux_i386elf_loader, sizeof(linux_i386elf_loader), linux_i386elf_loader, sizeof(linux_i386elf_loader),
linux_i386elf_fold, sizeof(linux_i386elf_fold), ft ); tmp, sizeof(linux_i386elf_fold), ft );
} }