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Expand set of things that work with double-click on opcode

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If you double-click on the opcode of "JSR label", the code view
selection jumps to the label.  This now works for partial operands,
e.g. "LDA #<label".

Some changes to the find-label-offset code affected the cc65 "is it
a forward reference to a direct-page label" logic.  The regression
test now correctly identifies an instruction that refers to itself
as not being a forward reference.
This commit is contained in:
Andy McFadden 2018-11-03 15:03:25 -07:00
parent a7e6b101c4
commit 2f74fce80b
7 changed files with 27 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
SourceGen/AppForms/GotoBox.cs
View File

@ -84,7 +84,7 @@ namespace SourceGen.AppForms {
// Try it as a label. If they give the label a hex name (e.g. "A001") they
// can prefix it with '$' to disambiguate the address.
int labelOffset = mProject.FindLabelByName(input);
int labelOffset = mProject.FindLabelOffsetByName(input);
if (labelOffset >= 0) {
TargetOffset = labelOffset;
} else if (Address.ParseAddress(input, 1<<24, out int addr)) {

21
SourceGen/AppForms/ProjectView.cs
View File

@ -2069,23 +2069,28 @@ namespace SourceGen.AppForms {
// statements and header comment earlier.
if (line.FileOffset >= 0) {
Anattrib attr = mProject.GetAnattrib(line.FileOffset);
FormatDescriptor dfd = attr.DataDescriptor;
// Does this have an operand with an in-file target offset?
// (Resolve it as a numeric reference.)
if (attr.OperandOffset >= 0) {
// Yup, find the line for that offset and jump to it.
GoToOffset(attr.OperandOffset, false, true);
//int targetIndex =
// mDisplayList.FindLineIndexByOffset(attr.OperandOffset);
//GoToOffset(mDisplayList[targetIndex].FileOffset);
} else if (dfd != null && dfd.HasSymbol) {
// Operand has a symbol, do a symbol lookup.
int labelOffset = mProject.FindLabelOffsetByName(
dfd.SymbolRef.Label);
if (labelOffset >= 0) {
GoToOffset(labelOffset, false, true);
}
} else if (attr.IsDataStart || attr.IsInlineDataStart) {
// If it's an Address or Symbol, we can try to resolve
// the value.
// the value. (Symbols should have been resolved by the
// previous clause, but Address entries would not have been.)
int operandOffset = DataAnalysis.GetDataOperandOffset(
mProject, line.FileOffset);
if (operandOffset >= 0) {
GoToOffset(operandOffset, false, true);
//int targetIndex =
// mDisplayList.FindLineIndexByOffset(operandOffset);
//GoToOffset(mDisplayList[targetIndex].FileOffset);
}
}
}
@ -3753,7 +3758,7 @@ namespace SourceGen.AppForms {
Symbol sym = mSymbolSubset.GetSubsetItem(row);
if (sym.SymbolSource == Symbol.Source.Auto || sym.SymbolSource == Symbol.Source.User) {
int offset = mProject.FindLabelByName(sym.Label);
int offset = mProject.FindLabelOffsetByName(sym.Label);
if (offset >= 0) {
GoToOffset(offset, false, true);
codeListView.Focus();

23
SourceGen/AsmGen/GenCommon.cs
View File

@ -322,28 +322,11 @@ namespace SourceGen.AsmGen {
if (dfd == null || !dfd.HasSymbol) {
return false;
}
if (!proj.SymbolTable.TryGetValue(dfd.SymbolRef.Label, out Symbol sym)) {
int labelOffset = proj.FindLabelOffsetByName(dfd.SymbolRef.Label);
if (labelOffset <= offset) {
// Doesn't exist, or is backward reference.
return false;
}
if (!sym.IsInternalLabel) {
return false;
}
// It's an internal label reference. We don't currently have a data structure
// that lets us go from label name to file offset. This situation is sufficiently
// rare that an O(n) approach is acceptable. We may need to fix this someday.
//
// We only want to know if it is defined after the current instruction. This is
// probably being used for a direct-page reference, which is probably at the start
// of the file, so we run from the start to the current instruction.
for (int i = 0; i < offset; i++) {
Anattrib attr = proj.GetAnattrib(i);
if (attr.Symbol != null && attr.Symbol == sym) {
// Found it earlier in file.
return false;
}
}
// Must appear later in file.
return true;
}

3
SourceGen/DataAnalysis.cs
View File

@ -196,7 +196,8 @@ namespace SourceGen {
}
/// <summary>
/// Extracts the operand offset from a data item.
/// Extracts the operand offset from a data item. Only useful for numeric/Address
/// and numeric/Symbol.
/// </summary>
/// <param name="proj">Project reference.</param>
/// <param name="offset">Offset of data item.</param>

5
SourceGen/DisasmProject.cs
View File

@ -1584,7 +1584,7 @@ namespace SourceGen {
/// </summary>
/// <param name="name">Label to find.</param>
/// <returns>File offset associated with label, or -1 if not found.</returns>
public int FindLabelByName(string name) {
public int FindLabelOffsetByName(string name) {
// We're interested in user labels and auto-generated labels. Do a lookup in
// SymbolTable to find the symbol, then if it's user or auto, we do a second
// search to find the file offset it's associated with. The second search
@ -1593,10 +1593,11 @@ namespace SourceGen {
//
// This will not find "hidden" labels, i.e. labels that are in the middle of an
// instruction or multi-byte data area, because those are removed from SymbolTable.
if (!SymbolTable.TryGetValue(name, out Symbol sym)) {
return -1;
}
if (sym.SymbolSource != Symbol.Source.Auto && sym.SymbolSource != Symbol.Source.User) {
if (!sym.IsInternalLabel) {
return -1;
}
for (int i = 0; i < mAnattribs.Length; i++) {

2
SourceGen/SGTestData/Expected/2014-label-dp_cc65.S
View File

@ -286,7 +286,7 @@ L122A: sbc (L0080),y
sbc f:L0089,x
.org $0080
L0080: bit z:L0082
L0082: bit z:L0082
L0082: bit L0082
bit L0082
L0086: bit a:L0086
L0089: lda f:L0089

10
SourceGen/Symbol.cs
View File

@ -26,12 +26,12 @@ namespace SourceGen {
/// </summary>
public enum Source {
// These are in order of highest to lowest precedence. This matters when
// looking up a symbol by value.
// looking up a symbol by value, since multiple symbols can have the same value.
Unknown = 0,
User, // user-defined label
Project, // from project configuration file
Platform, // from platform definition file
Auto // auto-generated
Auto // auto-generated label
}
/// <summary>
@ -48,15 +48,13 @@ namespace SourceGen {
Constant // constant value
}
/// <summary>
/// Returns true if the symbol's type is an internal label (auto or user). Returns
/// false for external addresses and constants.
/// </summary>
public bool IsInternalLabel {
get {
return SymbolType == Type.LocalOrGlobalAddr ||
SymbolType == Type.GlobalAddr ||
SymbolType == Type.GlobalAddrExport;
// Could also check Type instead. Either works for now.
return SymbolSource == Source.User || SymbolSource == Source.Auto;
}
}