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921 Commits

Author SHA1 Message Date
martin
115160e654 Fix a few bounds and instruction sequences generated in the PLT; exercised 
by ASLR and verified to work with the aslr fixed random debug sysctls.
 2016-06-20 08:12:25 +00:00
christos
4910b5ce72 Move relro after we've computed out relocbase and re-enable it. 
(Matthias Weckbecker)
 2016-06-16 11:34:13 +00:00
christos
3ee1ef9906 Turn off GNU_RELRO for now. 2016-06-15 12:08:47 +00:00
christos
0e6265fc35 Add support for GNU RELRO headers from Matthias Weckbecker. 2016-06-14 13:06:41 +00:00
christos
564475388a Put the name of the dynamic linker in allocated memory, so that it becomes 
part of the core file link-map, so that gdb can find it.
 2016-05-24 20:32:33 +00:00
joerg
6e49b77769 obj->phdr must be the absolute address, not the virtual offset from the 
main binary. Historically, this has been the same. For PIE though,
relocbase can be pretty much anywhere. Fixes PR toolchain/51159.
 2016-05-22 19:28:39 +00:00
skrll
42fe483061 Remove duplicated __RCSIDs I added years ago - I blame CVS. 
Spotted by Miod Vallat
 2016-04-14 20:17:07 +00:00
christos
80c3d4eb2a - Print a warning for text relocations 
- Don't remap the text segment executable while relocating
 2016-04-12 19:10:48 +00:00
christos
80fa2ce1a5 where is already void * 2016-02-20 15:20:23 +00:00
macallan
3709f36323 make debug code compile again 
from christos
 2016-02-19 22:09:09 +00:00
skrll
19b4c45621 Actually, descsz should not contain the padding. The note still needs to 
be padded out.
 2016-02-09 10:20:03 +00:00
skrll
a5b645efc7 Fix .note.netbsd.march by ensuring correct padding 2016-02-08 11:59:39 +00:00
christos
a21e664447 we don't need <sys/mbuf.h> 2016-01-24 01:56:04 +00:00
christos
ffeb8dbf4e Define _KERNTYPES for things that need it. 2016-01-23 21:22:45 +00:00
joerg
3490cc6261 Add an explicit note about the search path used by dlopen(3). 2015-07-03 10:19:29 +00:00
yamt
b549d229c6 Fix membars around rtld internal mutex. 
This fixes the most of lockups i observed with Open vSwitch
on NetBSD/amd64.  ("most of" because it still occasionally
locks up because of other problems.  see PR/49816)
 2015-04-06 09:34:15 +00:00
joerg
e0985a06ba lib/49813: Release mutex on error. 2015-04-04 18:51:57 +00:00
matt
32b939b05c Update RISCV to use the ELF relocations and new ABI. 2015-03-27 23:14:53 +00:00
skrll
70289840ad HPPA hack for a problem where gdb doesn't see _rtld_debug_state when 
it's a single bv,n %r0(%rp) instruction.

The nullify confuses something.
 2015-03-05 09:49:53 +00:00
chs
a60c43758e fix powerpc TLS problems by removing the hacks for PPC EABI. 
the kernel no longer treats R2 specially and its use as
the TLS register is now handled entirely in userland.
 2014-12-14 23:49:17 +00:00
martin
2782e828f4 Avoid use after free, reported by the coverity scanner. 2014-10-30 07:53:41 +00:00
matt
463829e46a RISC-V support. 2014-09-19 17:43:33 +00:00
matt
6cf6fe02a9 New files for Userland support of UCB RISC-V (both 32-bit and 64-bit) 2014-09-19 17:36:24 +00:00
matt
27620987b8 New files for OR1K support 2014-09-03 19:34:25 +00:00
matt
00cc626e2f OR1K support 2014-09-03 19:31:32 +00:00
joerg
e4cd9bc4a2 Remove (now duplicated) target computation. 2014-08-31 20:06:22 +00:00
christos
94e1a89978 remove unused define 2014-08-27 04:07:04 +00:00
joerg
c1a71e8076 Restore parenthesis to cast in the right order. 2014-08-26 21:20:05 +00:00
joerg
b88be9f652 Replace casts in the inline version of _rtld_call_function_void of 
_rtld_call_function_addr with ifdef on RTLD_LOADER.
 2014-08-26 19:49:33 +00:00
christos
db25848c17 fix set but not used. 2014-08-26 15:06:50 +00:00
joerg
5d06599748 Go back to skipping init/fini handling for ldd, makes problems for 32bit 
compat on LP64.
 2014-08-26 12:14:14 +00:00
christos
d9972a4666 Introduce a cast to fix the build for Elf32 on _LP64. 2014-08-26 07:54:27 +00:00
joerg
7a1a6f1cf3 Add basic support for indirect functions. It allows providing a public 
function symbol with an implementation choosen at run time.
Refactor calls to functions by address in ld.elf_so to create temporary
function descriptors on the stack, if the address is not leaked outside.

Limitations:
- no support for initialising static storage with function pointers
- no support for unnamed resolver functions

Inspired by FreeBSD's r228435 by kib@freebsd.org.
 2014-08-25 20:40:52 +00:00
joerg
f5cd842d49 Outdated, kill. 2014-08-23 19:18:41 +00:00
joerg
6a83645936 Typo. 2014-08-23 18:05:33 +00:00
matt
5b3354816c Add proper registers for register counts. 2014-08-17 16:57:37 +00:00
matt
d32bdc3217 add a missing register prefix. 2014-08-17 16:14:19 +00:00
matt
30993f706c Use -fPIC since powerpc64 is always compiled as -fPIC and -fpic would cause 
__PIC__ to change.
 2014-08-15 09:40:07 +00:00
joerg
8a961968a8 Build position independent on PPC64, too. 2014-08-13 15:56:52 +00:00
matt
243b0ccea7 Don't provide __gnu_Unwind_Find_exidx if __ARM_DWARF_EH__ is defined 2014-08-10 23:35:26 +00:00
matt
547b3a3b01 Changes to existing files to enable building AARCH64 userland. 
evbarm64-el
This is clang only.  While gcc4.8 supports aarch64, no netbsd support has
been written for aarch64 with gcc4.8.
 2014-08-10 05:56:36 +00:00
matt
beb9c6d1b5 Preliminary files for AARCH64 (64-bit ARM) support. 
Enough for a distribution build.
 2014-08-10 05:47:35 +00:00
matt
154c7bc749 Fix parenthesis on __ha macro 2014-07-28 17:28:13 +00:00
martin
b87a9303be The table of masks applied for each relocation type was wrong for some 
relocs with 64bit targets, like GLOB_DAT.
Change some instruction patterns used for PLT slots, so -current
objdump -d shows what the comment says.
Fix encoding of %lox() in PLT slots "close" to -1.
Enhance debug output slightly.
 2014-04-02 14:11:25 +00:00
matt
a1f21652d9 Make sure r1 is preserved _rtld_bind_start. 2014-03-22 15:13:10 +00:00
matt
e26b436cdb Simplify. If we got called via a calls $n, *pcrel32, instead of constructing 
a new stack frame, back up the PC by 7 and return back to the calls so it
will be reinvoked.  (This is by far the most common way it gets invoked).
Otherwise rebuild a new callframe and jump to the routine.
 2014-03-21 14:03:30 +00:00
matt
bc069d405c Improve some of the rdbg messages to print the address of the pltgot slot 
being modified.
 2014-03-21 01:43:33 +00:00
matt
22fbc67ed0 Don't resolve symbols to PLT entries on the VAX. It just causes a lot of 
overhead.
 2014-03-21 01:40:41 +00:00
joerg
f8bf5bbce0 Save actual start of function, not address of entry mask on the stack. 2014-03-19 21:52:00 +00:00
matt
f71aaf7afb Fix two bugs. (jump past entry mask, fix insv) 2014-03-19 15:34:30 +00:00