diff options
| -rw-r--r-- | src/readDwarf.cpp | 56 | ||||
| -rw-r--r-- | src/readDwarf.h | 10 |
2 files changed, 50 insertions, 16 deletions
diff --git a/src/readDwarf.cpp b/src/readDwarf.cpp index d8a4e47..a5d0075 100644 --- a/src/readDwarf.cpp +++ b/src/readDwarf.cpp @@ -11,21 +11,13 @@ extern "C" { #include "mscvpdb.h"
}
-// The actual value is {reg} + offset
-struct Location
-{
- int reg;
- int offset;
-};
-const int NoReg = -1;
-
Location makeLoc(int r, int o)
{
Location e = { r, o };
return e;
}
-bool decodeLocation(byte* loc, long len, Location* frameBase)
+bool decodeLocation(byte* loc, long len, Location& result, Location* frameBase)
{
byte* p = loc;
Location stack[256];
@@ -34,13 +26,11 @@ bool decodeLocation(byte* loc, long len, Location* frameBase) for (;;)
{
if (p >= loc + len)
- return false;
+ break;
int op = *p++;
if (op == 0)
- {
- return true;
- }
+ break;
switch (op)
{
@@ -74,10 +64,25 @@ bool decodeLocation(byte* loc, long len, Location* frameBase) case DW_OP_reg28: case DW_OP_reg29: case DW_OP_reg30: case DW_OP_reg31:
stack[stackDepth++] = makeLoc(op - DW_OP_reg0, 0);
break;
-
+ case DW_OP_regx:
+ stack[stackDepth++] = makeLoc(LEB128(p), 0);
+ break;
+
+ case DW_OP_breg0: case DW_OP_breg1: case DW_OP_breg2: case DW_OP_breg3:
+ case DW_OP_breg4: case DW_OP_breg5: case DW_OP_breg6: case DW_OP_breg7:
+ case DW_OP_breg8: case DW_OP_breg9: case DW_OP_breg10: case DW_OP_breg11:
+ case DW_OP_breg12: case DW_OP_breg13: case DW_OP_breg14: case DW_OP_breg15:
+ case DW_OP_breg16: case DW_OP_breg17: case DW_OP_breg18: case DW_OP_breg19:
+ case DW_OP_breg20: case DW_OP_breg21: case DW_OP_breg22: case DW_OP_breg23:
+ case DW_OP_breg24: case DW_OP_breg25: case DW_OP_breg26: case DW_OP_breg27:
+ case DW_OP_breg28: case DW_OP_breg29: case DW_OP_breg30: case DW_OP_breg31:
+ stack[stackDepth++] = makeLoc(op - DW_OP_breg0, SLEB128(p));
+ break;
case DW_OP_bregx:
- stack[stackDepth++] = makeLoc(LEB128(p), SLEB128(p));
- break;
+ {
+ unsigned reg = LEB128(p);
+ stack[stackDepth++] = makeLoc(reg, SLEB128(p));
+ } break;
case DW_OP_plus: // op2 + op1
{
@@ -230,8 +235,27 @@ bool decodeLocation(byte* loc, long len, Location* frameBase) }
--stackDepth;
} break;
+
+ case DW_OP_nop:
+ break;
+
+ case DW_OP_push_object_address:
+ case DW_OP_call2:
+ case DW_OP_call4:
+ case DW_OP_form_tls_address:
+ case DW_OP_call_frame_cfa:
+ case DW_OP_call_ref:
+ case DW_OP_bit_piece:
+ case DW_OP_implicit_value:
+ case DW_OP_stack_value:
+ default:
+ return false;
}
}
+
+ assert(stackDepth > 0);
+ result = stack[0];
+ return true;
}
diff --git a/src/readDwarf.h b/src/readDwarf.h index 8c81750..238fb24 100644 --- a/src/readDwarf.h +++ b/src/readDwarf.h @@ -282,6 +282,16 @@ struct DWARF_LineState ///////////////////////////////////////////////////////////////////////////////
+// The actual value is {reg} + offset
+struct Location
+{
+ int reg;
+ int offset;
+};
+const int NoReg = -1;
+
+bool decodeLocation(byte* loc, long len, Location& result, Location* frameBase = 0);
+
long decodeLocation(byte* loc, long len, bool push0, int &id, int& size);
inline long decodeLocation(byte*loc, long len, bool push0, int &id)
|