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[stackprotector] Implement the sspstrong rules for stack layout.
This changes the PrologueEpilogInserter and LocalStackSlotAllocation passes to follow the extended stack layout rules for sspstrong and sspreq. The sspstrong layout rules are: 1. Large arrays and structures containing large arrays (>= ssp-buffer-size) are closest to the stack protector. 2. Small arrays and structures containing small arrays (< ssp-buffer-size) are 2nd closest to the protector. 3. Variables that have had their address taken are 3rd closest to the protector. Differential Revision: http://llvm-reviews.chandlerc.com/D2546 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200601 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Josh Magee
parent
8a24e83550
commit
cde5c26c46
@ -1112,6 +1112,9 @@ example:
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- Calls to alloca() with variable sizes or constant sizes greater than
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- Calls to alloca() with variable sizes or constant sizes greater than
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``ssp-buffer-size``.
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``ssp-buffer-size``.
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Variables that are identified as requiring a protector will be arranged
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on the stack such that they are adjacent to the stack protector guard.
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If a function that has an ``ssp`` attribute is inlined into a
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If a function that has an ``ssp`` attribute is inlined into a
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function that doesn't have an ``ssp`` attribute, then the resulting
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function that doesn't have an ``ssp`` attribute, then the resulting
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function will have an ``ssp`` attribute.
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function will have an ``ssp`` attribute.
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@ -1120,6 +1123,17 @@ example:
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stack smashing protector. This overrides the ``ssp`` function
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stack smashing protector. This overrides the ``ssp`` function
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attribute.
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attribute.
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Variables that are identified as requiring a protector will be arranged
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on the stack such that they are adjacent to the stack protector guard.
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The specific layout rules are:
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#. Large arrays and structures containing large arrays
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(``>= ssp-buffer-size``) are closest to the stack protector.
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#. Small arrays and structures containing small arrays
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(``< ssp-buffer-size``) are 2nd closest to the protector.
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#. Variables that have had their address taken are 3rd closest to the
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protector.
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If a function that has an ``sspreq`` attribute is inlined into a
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If a function that has an ``sspreq`` attribute is inlined into a
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function that doesn't have an ``sspreq`` attribute or which has an
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function that doesn't have an ``sspreq`` attribute or which has an
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``ssp`` or ``sspstrong`` attribute, then the resulting function will have
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``ssp`` or ``sspstrong`` attribute, then the resulting function will have
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@ -1135,6 +1149,17 @@ example:
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- Calls to alloca().
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- Calls to alloca().
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- Local variables that have had their address taken.
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- Local variables that have had their address taken.
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Variables that are identified as requiring a protector will be arranged
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on the stack such that they are adjacent to the stack protector guard.
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The specific layout rules are:
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#. Large arrays and structures containing large arrays
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(``>= ssp-buffer-size``) are closest to the stack protector.
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#. Small arrays and structures containing small arrays
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(``< ssp-buffer-size``) are 2nd closest to the protector.
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#. Variables that have had their address taken are 3rd closest to the
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protector.
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This overrides the ``ssp`` function attribute.
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This overrides the ``ssp`` function attribute.
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If a function that has an ``sspstrong`` attribute is inlined into a
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If a function that has an ``sspstrong`` attribute is inlined into a
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@ -194,6 +194,9 @@ void LocalStackSlotPass::calculateFrameObjectOffsets(MachineFunction &Fn) {
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SmallSet<int, 16> ProtectedObjs;
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SmallSet<int, 16> ProtectedObjs;
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if (MFI->getStackProtectorIndex() >= 0) {
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if (MFI->getStackProtectorIndex() >= 0) {
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StackObjSet LargeArrayObjs;
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StackObjSet LargeArrayObjs;
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StackObjSet SmallArrayObjs;
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StackObjSet AddrOfObjs;
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AdjustStackOffset(MFI, MFI->getStackProtectorIndex(), Offset,
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AdjustStackOffset(MFI, MFI->getStackProtectorIndex(), Offset,
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StackGrowsDown, MaxAlign);
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StackGrowsDown, MaxAlign);
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@ -206,8 +209,12 @@ void LocalStackSlotPass::calculateFrameObjectOffsets(MachineFunction &Fn) {
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switch (SP->getSSPLayout(MFI->getObjectAllocation(i))) {
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switch (SP->getSSPLayout(MFI->getObjectAllocation(i))) {
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case StackProtector::SSPLK_None:
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case StackProtector::SSPLK_None:
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continue;
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case StackProtector::SSPLK_SmallArray:
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case StackProtector::SSPLK_SmallArray:
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SmallArrayObjs.insert(i);
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continue;
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case StackProtector::SSPLK_AddrOf:
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case StackProtector::SSPLK_AddrOf:
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AddrOfObjs.insert(i);
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continue;
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continue;
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case StackProtector::SSPLK_LargeArray:
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case StackProtector::SSPLK_LargeArray:
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LargeArrayObjs.insert(i);
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LargeArrayObjs.insert(i);
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@ -218,6 +225,10 @@ void LocalStackSlotPass::calculateFrameObjectOffsets(MachineFunction &Fn) {
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AssignProtectedObjSet(LargeArrayObjs, ProtectedObjs, MFI, StackGrowsDown,
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AssignProtectedObjSet(LargeArrayObjs, ProtectedObjs, MFI, StackGrowsDown,
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Offset, MaxAlign);
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Offset, MaxAlign);
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AssignProtectedObjSet(SmallArrayObjs, ProtectedObjs, MFI, StackGrowsDown,
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Offset, MaxAlign);
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AssignProtectedObjSet(AddrOfObjs, ProtectedObjs, MFI, StackGrowsDown,
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Offset, MaxAlign);
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}
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}
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// Then assign frame offsets to stack objects that are not used to spill
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// Then assign frame offsets to stack objects that are not used to spill
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@ -553,6 +553,9 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
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SmallSet<int, 16> ProtectedObjs;
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SmallSet<int, 16> ProtectedObjs;
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if (MFI->getStackProtectorIndex() >= 0) {
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if (MFI->getStackProtectorIndex() >= 0) {
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StackObjSet LargeArrayObjs;
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StackObjSet LargeArrayObjs;
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StackObjSet SmallArrayObjs;
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StackObjSet AddrOfObjs;
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AdjustStackOffset(MFI, MFI->getStackProtectorIndex(), StackGrowsDown,
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AdjustStackOffset(MFI, MFI->getStackProtectorIndex(), StackGrowsDown,
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Offset, MaxAlign);
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Offset, MaxAlign);
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@ -572,8 +575,12 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
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switch (SP->getSSPLayout(MFI->getObjectAllocation(i))) {
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switch (SP->getSSPLayout(MFI->getObjectAllocation(i))) {
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case StackProtector::SSPLK_None:
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case StackProtector::SSPLK_None:
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continue;
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case StackProtector::SSPLK_SmallArray:
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case StackProtector::SSPLK_SmallArray:
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SmallArrayObjs.insert(i);
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continue;
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case StackProtector::SSPLK_AddrOf:
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case StackProtector::SSPLK_AddrOf:
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AddrOfObjs.insert(i);
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continue;
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continue;
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case StackProtector::SSPLK_LargeArray:
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case StackProtector::SSPLK_LargeArray:
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LargeArrayObjs.insert(i);
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LargeArrayObjs.insert(i);
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@ -584,6 +591,10 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
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AssignProtectedObjSet(LargeArrayObjs, ProtectedObjs, MFI, StackGrowsDown,
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AssignProtectedObjSet(LargeArrayObjs, ProtectedObjs, MFI, StackGrowsDown,
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Offset, MaxAlign);
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Offset, MaxAlign);
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AssignProtectedObjSet(SmallArrayObjs, ProtectedObjs, MFI, StackGrowsDown,
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Offset, MaxAlign);
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AssignProtectedObjSet(AddrOfObjs, ProtectedObjs, MFI, StackGrowsDown,
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Offset, MaxAlign);
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}
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}
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// Then assign frame offsets to stack objects that are not used to spill
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// Then assign frame offsets to stack objects that are not used to spill
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@ -165,6 +165,327 @@ entry:
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ret void
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ret void
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}
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}
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define void @layout_sspstrong() sspstrong {
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entry:
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; Expected stack layout for sspstrong is
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; 144 large_nonchar . Group 1, nested arrays,
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; 136 large_char . arrays >= ssp-buffer-size
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; 128 struct_large_char .
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; 96 struct_large_nonchar .
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; 84+8 small_non_char | Group 2, nested arrays,
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; 90 small_char | arrays < ssp-buffer-size
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; 88 struct_small_char |
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; 84 struct_small_nonchar |
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; 80 addrof * Group 3, addr-of local
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; 76 scalar1 + Group 4, everything else
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; 72 scalar2 +
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; 68 scalar3 +
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;
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; CHECK: layout_sspstrong:
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; r[[SP]] is used as an offset into the stack later
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; CHECK: add r[[SP:[0-9]+]], sp, #84
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; CHECK: bl get_scalar1
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; CHECK: str r0, [sp, #76]
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; CHECK: bl end_scalar1
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; CHECK: bl get_scalar2
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; CHECK: str r0, [sp, #72]
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; CHECK: bl end_scalar2
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; CHECK: bl get_scalar3
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; CHECK: str r0, [sp, #68]
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; CHECK: bl end_scalar3
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; CHECK: bl get_addrof
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; CHECK: str r0, [sp, #80]
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; CHECK: bl end_addrof
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; CHECK: get_small_nonchar
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; CHECK: strh r0, [r[[SP]], #8]
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; CHECK: bl end_small_nonchar
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; CHECK: bl get_large_nonchar
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; CHECK: str r0, [sp, #144]
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; CHECK: bl end_large_nonchar
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; CHECK: bl get_small_char
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; CHECK: strb r0, [sp, #90]
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; CHECK: bl end_small_char
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; CHECK: bl get_large_char
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; CHECK: strb r0, [sp, #136]
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; CHECK: bl end_large_char
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; CHECK: bl get_struct_large_char
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; CHECK: strb r0, [sp, #128]
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; CHECK: bl end_struct_large_char
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; CHECK: bl get_struct_small_char
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; CHECK: strb r0, [sp, #88]
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; CHECK: bl end_struct_small_char
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; CHECK: bl get_struct_large_nonchar
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; CHECK: str r0, [sp, #96]
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; CHECK: bl end_struct_large_nonchar
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; CHECK: bl get_struct_small_nonchar
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; CHECK: strh r0, [r[[SP]]]
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; CHECK: bl end_struct_small_nonchar
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%x = alloca i32, align 4
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%y = alloca i32, align 4
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%z = alloca i32, align 4
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%ptr = alloca i32, align 4
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%small2 = alloca [2 x i16], align 2
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%large2 = alloca [8 x i32], align 16
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%small = alloca [2 x i8], align 1
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%large = alloca [8 x i8], align 1
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%a = alloca %struct.struct_large_char, align 1
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%b = alloca %struct.struct_small_char, align 1
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%c = alloca %struct.struct_large_nonchar, align 8
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%d = alloca %struct.struct_small_nonchar, align 2
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%call = call i32 @get_scalar1()
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store i32 %call, i32* %x, align 4
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call void @end_scalar1()
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%call1 = call i32 @get_scalar2()
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store i32 %call1, i32* %y, align 4
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call void @end_scalar2()
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%call2 = call i32 @get_scalar3()
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store i32 %call2, i32* %z, align 4
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call void @end_scalar3()
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%call3 = call i32 @get_addrof()
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store i32 %call3, i32* %ptr, align 4
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call void @end_addrof()
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%call4 = call signext i16 @get_small_nonchar()
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%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
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store i16 %call4, i16* %arrayidx, align 2
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call void @end_small_nonchar()
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%call5 = call i32 @get_large_nonchar()
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%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
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store i32 %call5, i32* %arrayidx6, align 4
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call void @end_large_nonchar()
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%call7 = call signext i8 @get_small_char()
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%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
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store i8 %call7, i8* %arrayidx8, align 1
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call void @end_small_char()
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%call9 = call signext i8 @get_large_char()
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%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
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store i8 %call9, i8* %arrayidx10, align 1
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call void @end_large_char()
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%call11 = call signext i8 @get_struct_large_char()
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%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
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%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
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store i8 %call11, i8* %arrayidx12, align 1
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call void @end_struct_large_char()
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%call13 = call signext i8 @get_struct_small_char()
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%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
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%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
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store i8 %call13, i8* %arrayidx15, align 1
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call void @end_struct_small_char()
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%call16 = call i32 @get_struct_large_nonchar()
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%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
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%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
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store i32 %call16, i32* %arrayidx18, align 4
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call void @end_struct_large_nonchar()
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%call19 = call signext i16 @get_struct_small_nonchar()
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%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
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%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
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store i16 %call19, i16* %arrayidx21, align 2
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call void @end_struct_small_nonchar()
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%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
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%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
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%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
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%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
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%0 = load i32* %x, align 4
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%1 = load i32* %y, align 4
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%2 = load i32* %z, align 4
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%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
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%3 = bitcast [8 x i8]* %coerce.dive to i64*
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%4 = load i64* %3, align 1
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%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
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%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
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%6 = load i16* %5, align 1
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%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
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%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
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%8 = load i32* %7, align 1
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call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
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ret void
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}
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define void @layout_sspreq() sspreq {
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entry:
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; Expected stack layout for sspreq is the same as sspstrong
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;
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; CHECK: layout_sspreq:
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; r[[SP]] is used as an offset into the stack later
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; CHECK: add r[[SP:[0-9]+]], sp, #84
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; CHECK: bl get_scalar1
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; CHECK: str r0, [sp, #76]
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; CHECK: bl end_scalar1
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; CHECK: bl get_scalar2
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; CHECK: str r0, [sp, #72]
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; CHECK: bl end_scalar2
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; CHECK: bl get_scalar3
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; CHECK: str r0, [sp, #68]
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; CHECK: bl end_scalar3
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; CHECK: bl get_addrof
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; CHECK: str r0, [sp, #80]
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; CHECK: bl end_addrof
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; CHECK: get_small_nonchar
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; CHECK: strh r0, [r[[SP]], #8]
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; CHECK: bl end_small_nonchar
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; CHECK: bl get_large_nonchar
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; CHECK: str r0, [sp, #144]
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; CHECK: bl end_large_nonchar
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; CHECK: bl get_small_char
|
||||||
|
; CHECK: strb r0, [sp, #90]
|
||||||
|
; CHECK: bl end_small_char
|
||||||
|
|
||||||
|
; CHECK: bl get_large_char
|
||||||
|
; CHECK: strb r0, [sp, #136]
|
||||||
|
; CHECK: bl end_large_char
|
||||||
|
|
||||||
|
; CHECK: bl get_struct_large_char
|
||||||
|
; CHECK: strb r0, [sp, #128]
|
||||||
|
; CHECK: bl end_struct_large_char
|
||||||
|
|
||||||
|
; CHECK: bl get_struct_small_char
|
||||||
|
; CHECK: strb r0, [sp, #88]
|
||||||
|
; CHECK: bl end_struct_small_char
|
||||||
|
|
||||||
|
; CHECK: bl get_struct_large_nonchar
|
||||||
|
; CHECK: str r0, [sp, #96]
|
||||||
|
; CHECK: bl end_struct_large_nonchar
|
||||||
|
|
||||||
|
; CHECK: bl get_struct_small_nonchar
|
||||||
|
; CHECK: strh r0, [r[[SP]]]
|
||||||
|
; CHECK: bl end_struct_small_nonchar
|
||||||
|
%x = alloca i32, align 4
|
||||||
|
%y = alloca i32, align 4
|
||||||
|
%z = alloca i32, align 4
|
||||||
|
%ptr = alloca i32, align 4
|
||||||
|
%small2 = alloca [2 x i16], align 2
|
||||||
|
%large2 = alloca [8 x i32], align 16
|
||||||
|
%small = alloca [2 x i8], align 1
|
||||||
|
%large = alloca [8 x i8], align 1
|
||||||
|
%a = alloca %struct.struct_large_char, align 1
|
||||||
|
%b = alloca %struct.struct_small_char, align 1
|
||||||
|
%c = alloca %struct.struct_large_nonchar, align 8
|
||||||
|
%d = alloca %struct.struct_small_nonchar, align 2
|
||||||
|
%call = call i32 @get_scalar1()
|
||||||
|
store i32 %call, i32* %x, align 4
|
||||||
|
call void @end_scalar1()
|
||||||
|
%call1 = call i32 @get_scalar2()
|
||||||
|
store i32 %call1, i32* %y, align 4
|
||||||
|
call void @end_scalar2()
|
||||||
|
%call2 = call i32 @get_scalar3()
|
||||||
|
store i32 %call2, i32* %z, align 4
|
||||||
|
call void @end_scalar3()
|
||||||
|
%call3 = call i32 @get_addrof()
|
||||||
|
store i32 %call3, i32* %ptr, align 4
|
||||||
|
call void @end_addrof()
|
||||||
|
%call4 = call signext i16 @get_small_nonchar()
|
||||||
|
%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
|
||||||
|
store i16 %call4, i16* %arrayidx, align 2
|
||||||
|
call void @end_small_nonchar()
|
||||||
|
%call5 = call i32 @get_large_nonchar()
|
||||||
|
%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
|
||||||
|
store i32 %call5, i32* %arrayidx6, align 4
|
||||||
|
call void @end_large_nonchar()
|
||||||
|
%call7 = call signext i8 @get_small_char()
|
||||||
|
%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
|
||||||
|
store i8 %call7, i8* %arrayidx8, align 1
|
||||||
|
call void @end_small_char()
|
||||||
|
%call9 = call signext i8 @get_large_char()
|
||||||
|
%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
|
||||||
|
store i8 %call9, i8* %arrayidx10, align 1
|
||||||
|
call void @end_large_char()
|
||||||
|
%call11 = call signext i8 @get_struct_large_char()
|
||||||
|
%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
|
||||||
|
%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
|
||||||
|
store i8 %call11, i8* %arrayidx12, align 1
|
||||||
|
call void @end_struct_large_char()
|
||||||
|
%call13 = call signext i8 @get_struct_small_char()
|
||||||
|
%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
|
||||||
|
%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
|
||||||
|
store i8 %call13, i8* %arrayidx15, align 1
|
||||||
|
call void @end_struct_small_char()
|
||||||
|
%call16 = call i32 @get_struct_large_nonchar()
|
||||||
|
%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
|
||||||
|
%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
|
||||||
|
store i32 %call16, i32* %arrayidx18, align 4
|
||||||
|
call void @end_struct_large_nonchar()
|
||||||
|
%call19 = call signext i16 @get_struct_small_nonchar()
|
||||||
|
%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
|
||||||
|
%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
|
||||||
|
store i16 %call19, i16* %arrayidx21, align 2
|
||||||
|
call void @end_struct_small_nonchar()
|
||||||
|
%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
|
||||||
|
%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
|
||||||
|
%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
|
||||||
|
%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
|
||||||
|
%0 = load i32* %x, align 4
|
||||||
|
%1 = load i32* %y, align 4
|
||||||
|
%2 = load i32* %z, align 4
|
||||||
|
%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
|
||||||
|
%3 = bitcast [8 x i8]* %coerce.dive to i64*
|
||||||
|
%4 = load i64* %3, align 1
|
||||||
|
%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
|
||||||
|
%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
|
||||||
|
%6 = load i16* %5, align 1
|
||||||
|
%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
|
||||||
|
%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
|
||||||
|
%8 = load i32* %7, align 1
|
||||||
|
call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
|
||||||
|
ret void
|
||||||
|
}
|
||||||
|
|
||||||
|
define void @struct_with_protectable_arrays() sspstrong {
|
||||||
|
entry:
|
||||||
|
; Check to ensure that a structure which contains a small array followed by a
|
||||||
|
; large array is assigned to the stack properly as a large object.
|
||||||
|
; CHECK: struct_with_protectable_arrays:
|
||||||
|
; CHECK: bl get_struct_small_char
|
||||||
|
; CHECK: strb r0, [sp, #68]
|
||||||
|
; CHECK: bl end_struct_small_char
|
||||||
|
; CHECK: bl get_struct_large_char2
|
||||||
|
; CHECK: strb r0, [sp, #106]
|
||||||
|
; CHECK: bl end_struct_large_char2
|
||||||
|
%a = alloca %struct.struct_small_char, align 1
|
||||||
|
%b = alloca %struct.struct_large_char2, align 1
|
||||||
|
%d1 = alloca %struct.struct_large_nonchar, align 8
|
||||||
|
%d2 = alloca %struct.struct_small_nonchar, align 2
|
||||||
|
%call = call signext i8 @get_struct_small_char()
|
||||||
|
%foo = getelementptr inbounds %struct.struct_small_char* %a, i32 0, i32 0
|
||||||
|
%arrayidx = getelementptr inbounds [2 x i8]* %foo, i32 0, i64 0
|
||||||
|
store i8 %call, i8* %arrayidx, align 1
|
||||||
|
call void @end_struct_small_char()
|
||||||
|
%call1 = call signext i8 @get_struct_large_char2()
|
||||||
|
%foo2 = getelementptr inbounds %struct.struct_large_char2* %b, i32 0, i32 1
|
||||||
|
%arrayidx3 = getelementptr inbounds [8 x i8]* %foo2, i32 0, i64 0
|
||||||
|
store i8 %call1, i8* %arrayidx3, align 1
|
||||||
|
call void @end_struct_large_char2()
|
||||||
|
%0 = bitcast %struct.struct_large_char2* %b to %struct.struct_large_char*
|
||||||
|
%coerce.dive = getelementptr %struct.struct_large_char* %0, i32 0, i32 0
|
||||||
|
%1 = bitcast [8 x i8]* %coerce.dive to i64*
|
||||||
|
%2 = load i64* %1, align 1
|
||||||
|
%coerce.dive4 = getelementptr %struct.struct_small_char* %a, i32 0, i32 0
|
||||||
|
%3 = bitcast [2 x i8]* %coerce.dive4 to i16*
|
||||||
|
%4 = load i16* %3, align 1
|
||||||
|
%coerce.dive5 = getelementptr %struct.struct_small_nonchar* %d2, i32 0, i32 0
|
||||||
|
%5 = bitcast [2 x i16]* %coerce.dive5 to i32*
|
||||||
|
%6 = load i32* %5, align 1
|
||||||
|
call void @takes_all(i64 %2, i16 %4, %struct.struct_large_nonchar* byval align 8 %d1, i32 %6, i8* null, i8* null, i32* null, i16* null, i32* null, i32 0, i32 0, i32 0)
|
||||||
|
ret void
|
||||||
|
}
|
||||||
|
|
||||||
declare i32 @get_scalar1()
|
declare i32 @get_scalar1()
|
||||||
declare void @end_scalar1()
|
declare void @end_scalar1()
|
||||||
|
|
||||||
|
|||||||
@ -21,7 +21,6 @@
|
|||||||
; on a non-linux target the data layout rules are triggered.
|
; on a non-linux target the data layout rules are triggered.
|
||||||
|
|
||||||
%struct.struct_large_char = type { [8 x i8] }
|
%struct.struct_large_char = type { [8 x i8] }
|
||||||
%struct.struct_large_char2 = type { [2 x i8], [8 x i8] }
|
|
||||||
%struct.struct_small_char = type { [2 x i8] }
|
%struct.struct_small_char = type { [2 x i8] }
|
||||||
%struct.struct_large_nonchar = type { [8 x i32] }
|
%struct.struct_large_nonchar = type { [8 x i32] }
|
||||||
%struct.struct_small_nonchar = type { [2 x i16] }
|
%struct.struct_small_nonchar = type { [2 x i16] }
|
||||||
@ -170,6 +169,282 @@ entry:
|
|||||||
ret void
|
ret void
|
||||||
}
|
}
|
||||||
|
|
||||||
|
define void @layout_sspstrong() nounwind uwtable sspstrong {
|
||||||
|
entry:
|
||||||
|
; Expected stack layout for sspstrong is
|
||||||
|
; -48 large_nonchar . Group 1, nested arrays,
|
||||||
|
; -56 large_char . arrays >= ssp-buffer-size
|
||||||
|
; -64 struct_large_char .
|
||||||
|
; -96 struct_large_nonchar .
|
||||||
|
; -100 small_non_char | Group 2, nested arrays,
|
||||||
|
; -102 small_char | arrays < ssp-buffer-size
|
||||||
|
; -104 struct_small_char |
|
||||||
|
; -112 struct_small_nonchar |
|
||||||
|
; -116 addrof * Group 3, addr-of local
|
||||||
|
; -120 scalar + Group 4, everything else
|
||||||
|
; -124 scalar +
|
||||||
|
; -128 scalar +
|
||||||
|
;
|
||||||
|
; CHECK: layout_sspstrong:
|
||||||
|
; CHECK: call{{l|q}} get_scalar1
|
||||||
|
; CHECK: movl %eax, -120(
|
||||||
|
; CHECK: call{{l|q}} end_scalar1
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_scalar2
|
||||||
|
; CHECK: movl %eax, -124(
|
||||||
|
; CHECK: call{{l|q}} end_scalar2
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_scalar3
|
||||||
|
; CHECK: movl %eax, -128(
|
||||||
|
; CHECK: call{{l|q}} end_scalar3
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_addrof
|
||||||
|
; CHECK: movl %eax, -116(
|
||||||
|
; CHECK: call{{l|q}} end_addrof
|
||||||
|
|
||||||
|
; CHECK: get_small_nonchar
|
||||||
|
; CHECK: movw %ax, -100(
|
||||||
|
; CHECK: call{{l|q}} end_small_nonchar
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_large_nonchar
|
||||||
|
; CHECK: movl %eax, -48(
|
||||||
|
; CHECK: call{{l|q}} end_large_nonchar
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_small_char
|
||||||
|
; CHECK: movb %al, -102(
|
||||||
|
; CHECK: call{{l|q}} end_small_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_large_char
|
||||||
|
; CHECK: movb %al, -56(
|
||||||
|
; CHECK: call{{l|q}} end_large_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_large_char
|
||||||
|
; CHECK: movb %al, -64(
|
||||||
|
; CHECK: call{{l|q}} end_struct_large_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_small_char
|
||||||
|
; CHECK: movb %al, -104(
|
||||||
|
; CHECK: call{{l|q}} end_struct_small_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_large_nonchar
|
||||||
|
; CHECK: movl %eax, -96(
|
||||||
|
; CHECK: call{{l|q}} end_struct_large_nonchar
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_small_nonchar
|
||||||
|
; CHECK: movw %ax, -112(
|
||||||
|
; CHECK: call{{l|q}} end_struct_small_nonchar
|
||||||
|
%x = alloca i32, align 4
|
||||||
|
%y = alloca i32, align 4
|
||||||
|
%z = alloca i32, align 4
|
||||||
|
%ptr = alloca i32, align 4
|
||||||
|
%small2 = alloca [2 x i16], align 2
|
||||||
|
%large2 = alloca [8 x i32], align 16
|
||||||
|
%small = alloca [2 x i8], align 1
|
||||||
|
%large = alloca [8 x i8], align 1
|
||||||
|
%a = alloca %struct.struct_large_char, align 1
|
||||||
|
%b = alloca %struct.struct_small_char, align 1
|
||||||
|
%c = alloca %struct.struct_large_nonchar, align 8
|
||||||
|
%d = alloca %struct.struct_small_nonchar, align 2
|
||||||
|
%call = call i32 @get_scalar1()
|
||||||
|
store i32 %call, i32* %x, align 4
|
||||||
|
call void @end_scalar1()
|
||||||
|
%call1 = call i32 @get_scalar2()
|
||||||
|
store i32 %call1, i32* %y, align 4
|
||||||
|
call void @end_scalar2()
|
||||||
|
%call2 = call i32 @get_scalar3()
|
||||||
|
store i32 %call2, i32* %z, align 4
|
||||||
|
call void @end_scalar3()
|
||||||
|
%call3 = call i32 @get_addrof()
|
||||||
|
store i32 %call3, i32* %ptr, align 4
|
||||||
|
call void @end_addrof()
|
||||||
|
%call4 = call signext i16 @get_small_nonchar()
|
||||||
|
%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
|
||||||
|
store i16 %call4, i16* %arrayidx, align 2
|
||||||
|
call void @end_small_nonchar()
|
||||||
|
%call5 = call i32 @get_large_nonchar()
|
||||||
|
%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
|
||||||
|
store i32 %call5, i32* %arrayidx6, align 4
|
||||||
|
call void @end_large_nonchar()
|
||||||
|
%call7 = call signext i8 @get_small_char()
|
||||||
|
%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
|
||||||
|
store i8 %call7, i8* %arrayidx8, align 1
|
||||||
|
call void @end_small_char()
|
||||||
|
%call9 = call signext i8 @get_large_char()
|
||||||
|
%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
|
||||||
|
store i8 %call9, i8* %arrayidx10, align 1
|
||||||
|
call void @end_large_char()
|
||||||
|
%call11 = call signext i8 @get_struct_large_char()
|
||||||
|
%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
|
||||||
|
%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
|
||||||
|
store i8 %call11, i8* %arrayidx12, align 1
|
||||||
|
call void @end_struct_large_char()
|
||||||
|
%call13 = call signext i8 @get_struct_small_char()
|
||||||
|
%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
|
||||||
|
%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
|
||||||
|
store i8 %call13, i8* %arrayidx15, align 1
|
||||||
|
call void @end_struct_small_char()
|
||||||
|
%call16 = call i32 @get_struct_large_nonchar()
|
||||||
|
%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
|
||||||
|
%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
|
||||||
|
store i32 %call16, i32* %arrayidx18, align 4
|
||||||
|
call void @end_struct_large_nonchar()
|
||||||
|
%call19 = call signext i16 @get_struct_small_nonchar()
|
||||||
|
%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
|
||||||
|
%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
|
||||||
|
store i16 %call19, i16* %arrayidx21, align 2
|
||||||
|
call void @end_struct_small_nonchar()
|
||||||
|
%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
|
||||||
|
%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
|
||||||
|
%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
|
||||||
|
%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
|
||||||
|
%0 = load i32* %x, align 4
|
||||||
|
%1 = load i32* %y, align 4
|
||||||
|
%2 = load i32* %z, align 4
|
||||||
|
%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
|
||||||
|
%3 = bitcast [8 x i8]* %coerce.dive to i64*
|
||||||
|
%4 = load i64* %3, align 1
|
||||||
|
%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
|
||||||
|
%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
|
||||||
|
%6 = load i16* %5, align 1
|
||||||
|
%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
|
||||||
|
%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
|
||||||
|
%8 = load i32* %7, align 1
|
||||||
|
call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
|
||||||
|
ret void
|
||||||
|
}
|
||||||
|
|
||||||
|
define void @layout_sspreq() nounwind uwtable sspreq {
|
||||||
|
entry:
|
||||||
|
; Expected stack layout for sspreq is the same as sspstrong
|
||||||
|
;
|
||||||
|
; CHECK: layout_sspreq:
|
||||||
|
; CHECK: call{{l|q}} get_scalar1
|
||||||
|
; CHECK: movl %eax, -120(
|
||||||
|
; CHECK: call{{l|q}} end_scalar1
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_scalar2
|
||||||
|
; CHECK: movl %eax, -124(
|
||||||
|
; CHECK: call{{l|q}} end_scalar2
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_scalar3
|
||||||
|
; CHECK: movl %eax, -128(
|
||||||
|
; CHECK: call{{l|q}} end_scalar3
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_addrof
|
||||||
|
; CHECK: movl %eax, -116(
|
||||||
|
; CHECK: call{{l|q}} end_addrof
|
||||||
|
|
||||||
|
; CHECK: get_small_nonchar
|
||||||
|
; CHECK: movw %ax, -100(
|
||||||
|
; CHECK: call{{l|q}} end_small_nonchar
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_large_nonchar
|
||||||
|
; CHECK: movl %eax, -48(
|
||||||
|
; CHECK: call{{l|q}} end_large_nonchar
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_small_char
|
||||||
|
; CHECK: movb %al, -102(
|
||||||
|
; CHECK: call{{l|q}} end_small_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_large_char
|
||||||
|
; CHECK: movb %al, -56(
|
||||||
|
; CHECK: call{{l|q}} end_large_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_large_char
|
||||||
|
; CHECK: movb %al, -64(
|
||||||
|
; CHECK: call{{l|q}} end_struct_large_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_small_char
|
||||||
|
; CHECK: movb %al, -104(
|
||||||
|
; CHECK: call{{l|q}} end_struct_small_char
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_large_nonchar
|
||||||
|
; CHECK: movl %eax, -96(
|
||||||
|
; CHECK: call{{l|q}} end_struct_large_nonchar
|
||||||
|
|
||||||
|
; CHECK: call{{l|q}} get_struct_small_nonchar
|
||||||
|
; CHECK: movw %ax, -112(
|
||||||
|
; CHECK: call{{l|q}} end_struct_small_nonchar
|
||||||
|
%x = alloca i32, align 4
|
||||||
|
%y = alloca i32, align 4
|
||||||
|
%z = alloca i32, align 4
|
||||||
|
%ptr = alloca i32, align 4
|
||||||
|
%small2 = alloca [2 x i16], align 2
|
||||||
|
%large2 = alloca [8 x i32], align 16
|
||||||
|
%small = alloca [2 x i8], align 1
|
||||||
|
%large = alloca [8 x i8], align 1
|
||||||
|
%a = alloca %struct.struct_large_char, align 1
|
||||||
|
%b = alloca %struct.struct_small_char, align 1
|
||||||
|
%c = alloca %struct.struct_large_nonchar, align 8
|
||||||
|
%d = alloca %struct.struct_small_nonchar, align 2
|
||||||
|
%call = call i32 @get_scalar1()
|
||||||
|
store i32 %call, i32* %x, align 4
|
||||||
|
call void @end_scalar1()
|
||||||
|
%call1 = call i32 @get_scalar2()
|
||||||
|
store i32 %call1, i32* %y, align 4
|
||||||
|
call void @end_scalar2()
|
||||||
|
%call2 = call i32 @get_scalar3()
|
||||||
|
store i32 %call2, i32* %z, align 4
|
||||||
|
call void @end_scalar3()
|
||||||
|
%call3 = call i32 @get_addrof()
|
||||||
|
store i32 %call3, i32* %ptr, align 4
|
||||||
|
call void @end_addrof()
|
||||||
|
%call4 = call signext i16 @get_small_nonchar()
|
||||||
|
%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
|
||||||
|
store i16 %call4, i16* %arrayidx, align 2
|
||||||
|
call void @end_small_nonchar()
|
||||||
|
%call5 = call i32 @get_large_nonchar()
|
||||||
|
%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
|
||||||
|
store i32 %call5, i32* %arrayidx6, align 4
|
||||||
|
call void @end_large_nonchar()
|
||||||
|
%call7 = call signext i8 @get_small_char()
|
||||||
|
%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
|
||||||
|
store i8 %call7, i8* %arrayidx8, align 1
|
||||||
|
call void @end_small_char()
|
||||||
|
%call9 = call signext i8 @get_large_char()
|
||||||
|
%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
|
||||||
|
store i8 %call9, i8* %arrayidx10, align 1
|
||||||
|
call void @end_large_char()
|
||||||
|
%call11 = call signext i8 @get_struct_large_char()
|
||||||
|
%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
|
||||||
|
%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
|
||||||
|
store i8 %call11, i8* %arrayidx12, align 1
|
||||||
|
call void @end_struct_large_char()
|
||||||
|
%call13 = call signext i8 @get_struct_small_char()
|
||||||
|
%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
|
||||||
|
%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
|
||||||
|
store i8 %call13, i8* %arrayidx15, align 1
|
||||||
|
call void @end_struct_small_char()
|
||||||
|
%call16 = call i32 @get_struct_large_nonchar()
|
||||||
|
%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
|
||||||
|
%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
|
||||||
|
store i32 %call16, i32* %arrayidx18, align 4
|
||||||
|
call void @end_struct_large_nonchar()
|
||||||
|
%call19 = call signext i16 @get_struct_small_nonchar()
|
||||||
|
%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
|
||||||
|
%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
|
||||||
|
store i16 %call19, i16* %arrayidx21, align 2
|
||||||
|
call void @end_struct_small_nonchar()
|
||||||
|
%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
|
||||||
|
%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
|
||||||
|
%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
|
||||||
|
%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
|
||||||
|
%0 = load i32* %x, align 4
|
||||||
|
%1 = load i32* %y, align 4
|
||||||
|
%2 = load i32* %z, align 4
|
||||||
|
%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
|
||||||
|
%3 = bitcast [8 x i8]* %coerce.dive to i64*
|
||||||
|
%4 = load i64* %3, align 1
|
||||||
|
%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
|
||||||
|
%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
|
||||||
|
%6 = load i16* %5, align 1
|
||||||
|
%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
|
||||||
|
%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
|
||||||
|
%8 = load i32* %7, align 1
|
||||||
|
call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
|
||||||
|
ret void
|
||||||
|
}
|
||||||
|
|
||||||
define void @fast_non_linux() ssp {
|
define void @fast_non_linux() ssp {
|
||||||
entry:
|
entry:
|
||||||
; FAST-NON-LIN: fast_non_linux:
|
; FAST-NON-LIN: fast_non_linux:
|
||||||
@ -222,9 +497,6 @@ declare void @end_large_char()
|
|||||||
declare signext i8 @get_struct_large_char()
|
declare signext i8 @get_struct_large_char()
|
||||||
declare void @end_struct_large_char()
|
declare void @end_struct_large_char()
|
||||||
|
|
||||||
declare signext i8 @get_struct_large_char2()
|
|
||||||
declare void @end_struct_large_char2()
|
|
||||||
|
|
||||||
declare signext i8 @get_struct_small_char()
|
declare signext i8 @get_struct_small_char()
|
||||||
declare void @end_struct_small_char()
|
declare void @end_struct_small_char()
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user