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35 Commits

Author SHA1 Message Date
Owen Anderson
d13db2c59c Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 22:09:45 +00:00
Chris Lattner
f8bd392dce tighten up this code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107670 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-06 15:59:27 +00:00
Eric Christopher
f7a0c7bf8b Fix up -fstack-protector on linux to use the segment 
registers.  Split out testcases per architecture and os
now.

Patch from Nelson Elhage.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107640 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-06 05:18:56 +00:00
Duncan Sands
b0bc6c361d Uniformize the names of type predicates: rather than having isFloatTy and 
isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96223 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-15 16:12:20 +00:00
Benjamin Kramer
8c65f6e71c Move remaining stuff to the isInteger predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92771 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 21:05:54 +00:00
Nick Lewycky
6726b6d75a Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:33:48 +00:00
Bill Wendling
dfd85c142f Neuter stack protectors by only checking character arrays. This is what GCC 
does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84916 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 00:01:05 +00:00
Owen Anderson
1d0be15f89 Push LLVMContexts through the IntegerType APIs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78948 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-13 21:58:54 +00:00
Owen Anderson
50dead06ff Revert yesterday's change by removing the LLVMContext parameter to AllocaInst and MallocInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75863 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-15 23:53:25 +00:00
Owen Anderson
9adc0abad3 Move EVER MORE stuff over to LLVMContext. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75703 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-14 23:09:55 +00:00
Owen Anderson
333c400965 This started as a small change, I swear. Unfortunately, lots of things call the [I|F]CmpInst constructors. Who knew!? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75200 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-09 23:48:35 +00:00
Duncan Sands
777d2306b3 Rename PaddedSize to AllocSize, in the hope that this 
will make it more obvious what it represents, and stop
it being confused with the StoreSize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71349 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-09 07:06:46 +00:00
Bill Wendling
5601699d7c When we split a basic block, there's a default branch to the newly created BB. 
Delete this default branch, because we're going to generate our own.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66234 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-06 01:41:15 +00:00
Duncan Sands
ceb4d1aecb Rename getABITypeSize to getTypePaddedSize, as 
suggested by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62099 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-12 20:38:59 +00:00
Bill Wendling
5734450d40 Rename stackprotector_create intrinsic to stackprotector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59519 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-18 11:01:33 +00:00
Bill Wendling
733bbc5320 Remove the stackprotector_check intrinsic. Use a volatile load instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59504 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-18 07:30:57 +00:00
Bill Wendling
c3348a77f7 - Use "moveAfter" instead of "remove/insert" of a basic block. 
- Use less indentation in coding.
- Shorten description.
- Update comments.
- Move code around


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-18 05:32:11 +00:00
Bill Wendling
e9e6bdf27f Implement stack protectors as function attributes: "ssp" and "sspreq". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59202 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-13 01:02:14 +00:00
Bill Wendling
22511ed2fe Small simplification. Use the iterator already present as the insertion point. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-10 23:38:59 +00:00
Bill Wendling
7205677a46 - Make sure that we don't over-increment the iterator when going through the 
basic blocks.
- Minor code clean-up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59002 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-10 21:13:10 +00:00
Bill Wendling
b7c6ebcb47 - Modify the stack protector algorithm so that the stack slot is allocated in 
LLVM IR code and not in the selection DAG ISel. This is a cleaner solution.

- Fix the heuristic for determining if protectors are necessary. The previous
  one wasn't checking the proper type size.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58824 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-07 01:23:58 +00:00
Bill Wendling
848693c254 Remove unneeded header file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58823 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-06 23:56:59 +00:00
Bill Wendling
1fb615f820 Don't build a vector of returns. Just modify the Function in the loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58822 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-06 23:55:49 +00:00
Bill Wendling
703ccfe053 The size limit is for individual arrays. So if any array has more than 8 bytes 
in it, then emit stack protectors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58819 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-06 22:18:44 +00:00
Bill Wendling
4c3a1d8d2b - Rename stackprotector_{prologue,epilogue} to stackprotector_{create,check}. 
- Get rid of "HasStackProtector" in MachineFrameInfo.
- Modify intrinsics to tell which are doing what with memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58799 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-06 07:23:03 +00:00
Bill Wendling
89c5cc6c79 Adjust the stack protector heuristic to care about only arrays or calls to 
"alloca".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-06 02:38:58 +00:00
Bill Wendling
b2a4298ce4 Implement the stack protector stack accesses via intrinsics: 
- stackprotector_prologue creates a stack object and stores the guard there.

- stackprotector_epilogue reads the stack guard from the stack position created
  by stackprotector_prologue.

- The PrologEpilogInserter was changed to make sure that the stack guard is
  first on the stack frame.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58791 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-06 02:29:10 +00:00
Bill Wendling
1508606ee8 Remove dead variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58741 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-05 00:56:35 +00:00
Bill Wendling
fa75dc647c Simplify the allocated size calculation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58740 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-05 00:54:27 +00:00
Bill Wendling
f0eaa9a233 Fix comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58739 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-05 00:46:15 +00:00
Bill Wendling
613f77439e Some code simplification. It now doesn't generate a prologue if the epilogue 
isn't going to be generated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58734 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-05 00:00:21 +00:00
Bill Wendling
4a3a851182 Small simplification of the stack guard type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58728 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-04 22:54:43 +00:00
Bill Wendling
b7c2c1246f - Add a "getOrInsertGlobal" method to the Module class. This acts similarly to 
"getOrInsertFunction" in that it either adds a new declaration of the global
  and returns it, or returns the current one -- optionally casting it to the
  correct type.
- Use the new getOrInsertGlobal in the stack protector code.
- Use "splitBasicBlock" in the stack protector code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58727 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-04 22:51:24 +00:00
Bill Wendling
80a320d974 Update in response to feedback from Chris: 
- Use enums instead of magic numbers.

- Rework algorithm to use the bytes size from the target to determine when to
  emit stack protectors.

- Get rid of "propolice" in any comments.

- Renamed an option to its expanded form.

- Other miscellanenous changes.

More changes will come after this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58723 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-04 21:53:09 +00:00
Bill Wendling
2b58ce5ab4 Initial checkin for stack protectors. Here's what it does: 
* The prologue is modified to read the __stack_chk_guard global and insert it
  onto the stack.

* The epilogue is modified to read the stored guard from the stack and compare
  it to the original __stack_chk_guard value. If they differ, then the
  __stack_chk_fail() function is called.

* The stack protector needs to be first on the stack (after the parameters) to
  catch any stack-smashing activities.

Front-end support will follow after a round of beta testing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58673 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-04 02:10:20 +00:00