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173 Commits

Author SHA1 Message Date
Rafael Espindola
826e95913b Delete dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243015 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 13:42:16 +00:00
Rafael Espindola
a7616cd14c Add a version of getSymbol with an explicit symbol table. Use it. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243011 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 12:49:40 +00:00
Rafael Espindola
a95022a4f3 Refactor duplicated code and check for invalid symbol table size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242981 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 03:24:22 +00:00
Rafael Espindola
55b052ae66 Delete ELFEntityIterator. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242901 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-22 14:09:20 +00:00
Michael J. Spencer
3f6881efa5 [Object][ELF] Handle files with no section header string table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242839 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 21:40:33 +00:00
Rafael Espindola
c22eb2bea6 Don't iterate over the program headers in the constructor of ELFFile. 
Not every program needs this information.

In particular, it is necessary and sufficient for a static linker to scan the
section table.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242833 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 20:50:53 +00:00
Rafael Espindola
961b7c2b52 Remove always null argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242828 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 19:38:32 +00:00
Rafael Espindola
d8a62d931e Remove getDynamicSymbolName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242821 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 18:20:17 +00:00
Rafael Espindola
9ed0d629ce Remove getStaticSymbolName. 
Every user now keeps track of the correct string table to use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242818 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 18:04:29 +00:00
Rafael Espindola
746609067c Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242804 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 16:50:57 +00:00
Rafael Espindola
7eeb71ddc3 Replace the last uses of ELF::getSymbolName in llvm-readobj. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242798 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 16:26:21 +00:00
Rafael Espindola
fcadda639e llvm-readobj: use the associated string table to print symbols. NFI. 
This just removes some cases that require ELFFile to eagerly parse the ELF
file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242794 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 16:02:10 +00:00
Rafael Espindola
ab466de617 Remove unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242789 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 14:45:56 +00:00
Rafael Espindola
04d208815c Don't do a walk over the dynamic table just to find DT_SONAME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242752 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-21 01:01:29 +00:00
Rafael Espindola
0377a22491 Simplify now that we can iterate backwards. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242715 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 21:45:56 +00:00
Rafael Espindola
d94e17bde9 Simplify iterating over the dynamic section and report broken ones. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242712 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 21:23:29 +00:00
Rafael Espindola
1c12cc02fd Remove Elf_Rela_Iter and Elf_Rel_Iter. 
Use just the pointers and check for invalid relocation sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242700 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 20:07:50 +00:00
Rafael Espindola
96d9043a78 Report errors an invalid virtual addresses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242676 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 14:45:03 +00:00
Rafael Espindola
3c7642e230 Remove unnecessary code. 
We were locating the dynamic string table via both the section and segment
headers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242674 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 14:29:00 +00:00
Rafael Espindola
96a1f00376 Simplify the search for which segment has a virtual address. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242672 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 14:15:38 +00:00
Rafael Espindola
9a4133e1ee Simplify iterating over program headers and detect corrupt ones. 
We now use a simple pointer and have range loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242669 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-20 13:35:33 +00:00
Hans Wennborg
a69b1311b2 Allocate the IntervalMap in ELF.h on the heap to work around MSVC alignment bug (PR24113) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242157 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-14 16:27:16 +00:00
Michael J. Spencer
d37a9dfc0b [Object][ELF] Handle the dynamic string table in files without a section table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241937 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-10 20:11:57 +00:00
NAKAMURA Takumi
89a6fba75e llvm/Object/ELF.h: Appease g++-4.7.2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241895 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-10 08:43:41 +00:00
Michael J. Spencer
478d483d7e Fix shadowing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241870 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 22:42:21 +00:00
Michael J. Spencer
8109763d68 [Object][ELF] Support dumping hash-tables from files with no section table. 
This time without breaking the bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241869 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 22:32:24 +00:00
Adrian Prantl
2efb9f7c3e Temporarily reverting 241765, 241768, and 241772 to unbreak the build bots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241781 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 02:14:49 +00:00
Michael J. Spencer
43dce9c732 Fix typename issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241768 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 00:46:24 +00:00
Michael J. Spencer
7d0e4c73d4 [Object][ELF] Support dumping hash-tables from files with no section table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241765 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-09 00:21:06 +00:00
Rafael Espindola
cca9ef3247 Delete dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241353 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-03 14:46:17 +00:00
Rafael Espindola
abdd9e7330 Continue to remove the notion that ELF has dynamic and static symbols. 
The ELFObjectFile now just reasons about a section/index pair, removing
one of the users that force ELF.h to maintain the difference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241344 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-03 12:00:05 +00:00
Rafael Espindola
3a27979633 Handle .dynsym a bit more like we handle .symtab. 
They have the same format and we find them in the same way, no reason to handle
them differently.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241280 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-02 16:03:38 +00:00
Rafael Espindola
adc9db9825 Use default member initializes. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241277 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-02 15:48:05 +00:00
Rafael Espindola
e4e6f29c93 Improve error message. 
Thanks to Sean Silva for the suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241255 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-02 11:48:48 +00:00
Rafael Espindola
df3edb6d36 Return ErrorOr from getSection. 
This also improves the logic of what is an error:

* getSection(uint_32): only return an error if the index is out of bounds. The
  index 0 corresponds to a perfectly valid entry.
* getSection(Elf_Sym): Returns null for symbols that normally don't have
  sections and error for out of bound indexes.

In many places this just moves the report_fatal_error up the stack, but those
can then be fixed in smaller patches.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241156 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-01 12:56:27 +00:00
Rafael Espindola
4a04da337e Remove Elf_Shdr_Iter. Diagnose files with invalid section header sizes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241109 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-30 19:58:10 +00:00
Rafael Espindola
28bec63a7e Fix the name of the iterator functions to match the coding standards. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241074 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-30 15:33:44 +00:00
Rafael Espindola
e8ff062325 Report an error on invalid sh_entsize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241070 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-30 14:59:20 +00:00
NAKAMURA Takumi
d6751a82b3 ELF.h: Prune obsolete comments removed in r240996. [-Wdocumentation] 
FIXME: Should they be moved onto Elf_Sym_Impl::getNmae()?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241044 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-30 05:59:13 +00:00
Rafael Espindola
3d176ae165 Convert obj->getSymbolName to sym->getName. 
I doesn't depend on the object anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240996 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-29 21:24:55 +00:00
Rafael Espindola
9a6c902332 Factor out the checking of string tables. 
This moves the error checking for string tables to getStringTable which returns
an ErrorOr<StringRef>.

This improves error checking, makes it uniform across all string tables and
makes it possible to check them once instead of once per name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240950 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-29 14:39:25 +00:00
Rafael Espindola
db89b93b44 Convert an assert that can fail into error checking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240944 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-29 14:02:24 +00:00
Rafael Espindola
e8f07a7eb3 Remove Elf_Sym_Iter. 
It was a fairly broken concept for an ELF only class.

An ELF file can have two symbol tables, but they have exactly the same
format. There is no concept of a dynamic or a static symbol. Storing this
on the iterator also makes us do more work per symbol than necessary. To fetch
a name we would:

* Find if we had a static or a dynamic symbol.
* Look at the corresponding symbol table and find the string table section.
* Look at the string table section to fetch its contents.
* Compute the name as a substring of the string table.

All but the last step can be done per symbol table instead of per symbol. This
is a step in that direction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240939 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-29 12:38:31 +00:00
Rafael Espindola
aaaa38cb95 Fix error handling in getString and simplify callers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240810 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-26 18:42:17 +00:00
Rafael Espindola
b82800d00e Delete dead code. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240807 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-26 18:32:53 +00:00
Michael J. Spencer
7358cbc837 [ELF] Add some accessors for lld. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240730 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-25 23:40:41 +00:00
Michael J. Spencer
4cbb2db3ab [Object][ELF] Add support for dumping dynamic relocations when sections are stripped. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240703 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-25 21:47:32 +00:00
Rafael Espindola
1e6b8f552c Don't get confused with sections whose section number is reserved. 
It is perfectly possible for SHNDX to contain indexes that have the same value
as reserved st_shndx values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240544 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-24 14:48:54 +00:00
Alexey Samsonov
85529a57b4 Revert "[Object, ELF] Fix segmentation fault in ELFFile::getSectionName()." 
This reverts commit r239124.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239125 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-04 23:58:31 +00:00
Alexey Samsonov
83f903f352 [Object, ELF] Fix segmentation fault in ELFFile::getSectionName(). 
Don't do a null dereference if .shstrtab section is missing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239124 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-04 23:40:23 +00:00