[llvm-commits] CVS: llvm/lib/CodeGen/DwarfWriter.cpp
Jim Laskey
jlaskey at apple.com
Tue Aug 29 09:24:41 PDT 2006
Changes in directory llvm/lib/CodeGen:
DwarfWriter.cpp updated: 1.71 -> 1.72
---
Log message:
Handle callee saved registers in dwarf frame info (lead up to exception
handling.)
---
Diffs of the changes: (+35 -9)
DwarfWriter.cpp | 44 +++++++++++++++++++++++++++++++++++---------
1 files changed, 35 insertions(+), 9 deletions(-)
Index: llvm/lib/CodeGen/DwarfWriter.cpp
diff -u llvm/lib/CodeGen/DwarfWriter.cpp:1.71 llvm/lib/CodeGen/DwarfWriter.cpp:1.72
--- llvm/lib/CodeGen/DwarfWriter.cpp:1.71 Fri Aug 25 14:39:52 2006
+++ llvm/lib/CodeGen/DwarfWriter.cpp Tue Aug 29 11:24:26 2006
@@ -35,7 +35,7 @@
static cl::opt<bool>
DwarfVerbose("dwarf-verbose", cl::Hidden,
- cl::desc("Add comments to Dwarf directives."));
+ cl::desc("Add comments to Dwarf directives."));
namespace llvm {
@@ -1946,7 +1946,7 @@
// Advance row if new location.
if (BaseLabel && LabelID && BaseLabelID != LabelID) {
- EmitULEB128Bytes(DW_CFA_advance_loc4);
+ EmitInt8(DW_CFA_advance_loc4);
EOL("DW_CFA_advance_loc4");
EmitDifference("loc", LabelID, BaseLabel, BaseLabelID);
EOL("");
@@ -1955,30 +1955,56 @@
BaseLabel = "loc";
}
+ int stackGrowth =
+ Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
+ TargetFrameInfo::StackGrowsUp ?
+ AddressSize : -AddressSize;
+
// If advancing cfa.
if (Dst.isRegister() && Dst.getRegister() == MachineLocation::VirtualFP) {
if (!Src.isRegister()) {
if (Src.getRegister() == MachineLocation::VirtualFP) {
- EmitULEB128Bytes(DW_CFA_def_cfa_offset);
+ EmitInt8(DW_CFA_def_cfa_offset);
EOL("DW_CFA_def_cfa_offset");
} else {
- EmitULEB128Bytes(DW_CFA_def_cfa);
+ EmitInt8(DW_CFA_def_cfa);
EOL("DW_CFA_def_cfa");
EmitULEB128Bytes(RI->getDwarfRegNum(Src.getRegister()));
EOL("Register");
}
- int stackGrowth =
- Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
- TargetFrameInfo::StackGrowsUp ?
- AddressSize : -AddressSize;
+ int Offset = Src.getOffset() / stackGrowth;
- EmitULEB128Bytes(Src.getOffset() / stackGrowth);
+ EmitULEB128Bytes(Offset);
EOL("Offset");
} else {
+ assert(0 && "Machine move no supported yet.");
}
} else {
+ unsigned Reg = RI->getDwarfRegNum(Src.getRegister());
+ int Offset = Dst.getOffset() / stackGrowth;
+
+ if (Offset < 0) {
+ EmitInt8(DW_CFA_offset_extended_sf);
+ EOL("DW_CFA_offset_extended_sf");
+ EmitULEB128Bytes(Reg);
+ EOL("Reg");
+ EmitSLEB128Bytes(Offset);
+ EOL("Offset");
+ } else if (Reg < 64) {
+ EmitInt8(DW_CFA_offset + Reg);
+ EOL("DW_CFA_offset + Reg");
+ EmitULEB128Bytes(Offset);
+ EOL("Offset");
+ } else {
+ EmitInt8(DW_CFA_offset_extended);
+ EOL("DW_CFA_offset_extended");
+ EmitULEB128Bytes(Reg);
+ EOL("Reg");
+ EmitULEB128Bytes(Offset);
+ EOL("Offset");
+ }
}
}
}
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