mirror of
https://github.com/fadden/6502bench.git
synced 2025-03-11 22:36:43 +00:00
Work around cc65 single-pass behavior
The cc65 assembler runs in a single pass, which means forward address references default to 16 bits. For zero-page references we have to add an explicit width disambiguator. (This is an unusual situation that only occurs if you have a zero-page .ORG in the file after code that references it.) With this change, 2014-label-dp passes, and no other regression tests were affected. (issue #40)
This commit is contained in:
Andy McFadden
parent
c80be07f73
commit
a88c746419
@ -63,7 +63,8 @@ namespace Asm65 {
|
||||
public bool mAllowHighAsciiCharConst; // can we do high-ASCII character constants?
|
||||
// (this might need to be generalized)
|
||||
|
||||
public string mForceAbsOpcodeSuffix; // these may be null or empty
|
||||
public string mForceDirectOperandPrefix; // these may be null or empty
|
||||
public string mForceAbsOpcodeSuffix;
|
||||
public string mForceAbsOperandPrefix;
|
||||
public string mForceLongOpcodeSuffix;
|
||||
public string mForceLongOperandPrefix;
|
||||
@ -485,7 +486,9 @@ namespace Asm65 {
|
||||
/// <returns></returns>
|
||||
public string FormatMnemonic(string mnemonic, OpDef.WidthDisambiguation wdis) {
|
||||
string opcodeStr = mnemonic;
|
||||
if (wdis == OpDef.WidthDisambiguation.ForceAbs) {
|
||||
if (wdis == OpDef.WidthDisambiguation.ForceDirect) {
|
||||
// nothing to do for opcode
|
||||
} else if (wdis == OpDef.WidthDisambiguation.ForceAbs) {
|
||||
if (!string.IsNullOrEmpty(mFormatConfig.mForceAbsOpcodeSuffix)) {
|
||||
opcodeStr += mFormatConfig.mForceAbsOpcodeSuffix;
|
||||
}
|
||||
@ -507,13 +510,18 @@ namespace Asm65 {
|
||||
/// Generates an operand format.
|
||||
/// </summary>
|
||||
/// <param name="addrMode">Addressing mode.</param>
|
||||
/// <param name="wdis">Width disambiguation mode.</param>
|
||||
/// <returns>Format string.</returns>
|
||||
private string GenerateOperandFormat(OpDef.AddressMode addrMode,
|
||||
OpDef.WidthDisambiguation wdis) {
|
||||
string fmt;
|
||||
string wdisStr = string.Empty;
|
||||
|
||||
if (wdis == OpDef.WidthDisambiguation.ForceAbs) {
|
||||
if (wdis == OpDef.WidthDisambiguation.ForceDirect) {
|
||||
if (!string.IsNullOrEmpty(mFormatConfig.mForceDirectOperandPrefix)) {
|
||||
wdisStr = mFormatConfig.mForceDirectOperandPrefix;
|
||||
}
|
||||
} else if (wdis == OpDef.WidthDisambiguation.ForceAbs) {
|
||||
if (!string.IsNullOrEmpty(mFormatConfig.mForceAbsOperandPrefix)) {
|
||||
wdisStr = mFormatConfig.mForceAbsOperandPrefix;
|
||||
}
|
||||
|
||||
@ -112,9 +112,10 @@ namespace Asm65 {
|
||||
/// </summary>
|
||||
public enum WidthDisambiguation : byte {
|
||||
None = 0,
|
||||
ForceDirect, // only needed for forward DP label refs in single-pass assemblers
|
||||
ForceAbs,
|
||||
ForceLong,
|
||||
ForceLongMaybe
|
||||
ForceLongMaybe // add opcode suffix but not operand prefix
|
||||
|
||||
// May want an additional item: "force long if operand suffix specified". This
|
||||
// would let us generate LDAL for assemblers that like to have that made explicit,
|
||||
|
||||
@ -164,6 +164,7 @@ namespace SourceGen.AsmGen {
|
||||
// cc65 v2.17: https://github.com/cc65/cc65/issues/754
|
||||
Quirks.NoPcRelBankWrap = true;
|
||||
}
|
||||
Quirks.SinglePassAssembler = true;
|
||||
|
||||
mWorkDirectory = workDirectory;
|
||||
mFileNameBase = fileNameBase;
|
||||
@ -182,6 +183,7 @@ namespace SourceGen.AsmGen {
|
||||
private void SetFormatConfigValues(ref Formatter.FormatConfig config) {
|
||||
config.mForceAbsOpcodeSuffix = string.Empty;
|
||||
config.mForceLongOpcodeSuffix = string.Empty;
|
||||
config.mForceDirectOperandPrefix = "z:"; // zero
|
||||
config.mForceAbsOperandPrefix = "a:"; // absolute
|
||||
config.mForceLongOperandPrefix = "f:"; // far
|
||||
config.mEndOfLineCommentDelimiter = ";";
|
||||
|
||||
@ -185,6 +185,7 @@ namespace SourceGen.AsmGen {
|
||||
private void SetFormatConfigValues(ref Formatter.FormatConfig config) {
|
||||
config.mForceAbsOpcodeSuffix = ":";
|
||||
config.mForceLongOpcodeSuffix = "l";
|
||||
config.mForceDirectOperandPrefix = string.Empty;
|
||||
config.mForceAbsOperandPrefix = string.Empty;
|
||||
config.mForceLongOperandPrefix = string.Empty;
|
||||
config.mEndOfLineCommentDelimiter = ";";
|
||||
|
||||
@ -179,6 +179,7 @@ namespace SourceGen.AsmGen {
|
||||
|
||||
config.mForceAbsOpcodeSuffix = string.Empty;
|
||||
config.mForceLongOpcodeSuffix = string.Empty;
|
||||
config.mForceDirectOperandPrefix = string.Empty;
|
||||
config.mForceAbsOperandPrefix = "@w"; // word
|
||||
config.mForceLongOperandPrefix = "@l"; // long
|
||||
config.mEndOfLineCommentDelimiter = ";";
|
||||
|
||||
@ -171,6 +171,15 @@ namespace SourceGen.AsmGen {
|
||||
if (op.IsWidthPotentiallyAmbiguous) {
|
||||
wdis = OpDef.GetWidthDisambiguation(instrLen, operand);
|
||||
}
|
||||
if (gen.Quirks.SinglePassAssembler && wdis == OpDef.WidthDisambiguation.None &&
|
||||
(op.AddrMode == OpDef.AddressMode.DP ||
|
||||
op.AddrMode == OpDef.AddressMode.DPIndexX) ||
|
||||
op.AddrMode == OpDef.AddressMode.DPIndexY) {
|
||||
// Could be a forward reference to a direct-page label.
|
||||
if (IsForwardLabelReference(gen, offset)) {
|
||||
wdis = OpDef.WidthDisambiguation.ForceDirect;
|
||||
}
|
||||
}
|
||||
|
||||
string opcodeStr = formatter.FormatOpcode(op, wdis);
|
||||
|
||||
@ -298,6 +307,46 @@ namespace SourceGen.AsmGen {
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Determines whether the instruction at the specified offset has an operand that is
|
||||
/// a forward reference. This only matters for single-pass assemblers.
|
||||
/// </summary>
|
||||
/// <param name="gen">Source generator reference.</param>
|
||||
/// <param name="offset">Offset of instruction opcode.</param>
|
||||
/// <returns>True if the instruction's operand is a forward reference to a label.</returns>
|
||||
private static bool IsForwardLabelReference(IGenerator gen, int offset) {
|
||||
DisasmProject proj = gen.Project;
|
||||
Debug.Assert(proj.GetAnattrib(offset).IsInstructionStart);
|
||||
|
||||
FormatDescriptor dfd = proj.GetAnattrib(offset).DataDescriptor;
|
||||
if (dfd == null || !dfd.HasSymbol) {
|
||||
return false;
|
||||
}
|
||||
if (!proj.SymbolTable.TryGetValue(dfd.SymbolRef.Label, out Symbol sym)) {
|
||||
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;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Configures some common format config items from the app settings. Uses a
|
||||
/// passed-in settings object, rather than the global settings.
|
||||
|
||||
@ -183,5 +183,10 @@ namespace SourceGen.AsmGen {
|
||||
/// (Note this affects long-distance BRLs that don't appear to wrap.)
|
||||
/// </summary>
|
||||
public bool NoPcRelBankWrap { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Is the assembler implemented as a single pass?
|
||||
/// </summary>
|
||||
public bool SinglePassAssembler { get; set; }
|
||||
}
|
||||
}
|
||||
292
SourceGen/SGTestData/Expected/2014-label-dp_cc65.S
Normal file
292
SourceGen/SGTestData/Expected/2014-label-dp_cc65.S
Normal file
@ -0,0 +1,292 @@
|
||||
;6502bench SourceGen v1.1.0-dev1
|
||||
.setcpu "65816"
|
||||
.org $1000
|
||||
.a8
|
||||
.i8
|
||||
sec
|
||||
xce
|
||||
jsr L101F
|
||||
jsr L10AB
|
||||
jsr L10F2
|
||||
jsr L1106
|
||||
jsr L1109
|
||||
jsr L112C
|
||||
jsr L11F9
|
||||
jsr L11FC
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
.byte $00,$80
|
||||
|
||||
L101F: ora (L0080,x)
|
||||
cop $80
|
||||
ora $80,S
|
||||
tsb z:L0080
|
||||
ora z:L0080
|
||||
asl z:L0080
|
||||
ora [L0080]
|
||||
php
|
||||
ora #$80
|
||||
asl A
|
||||
phd
|
||||
tsb a:L0086
|
||||
ora a:L0086
|
||||
asl a:L0086
|
||||
ora f:L0089
|
||||
bpl L1041
|
||||
L1041: ora (L0080),y
|
||||
ora (L0080)
|
||||
ora ($80,S),y
|
||||
trb z:L0080
|
||||
ora z:L0080,x
|
||||
asl z:L0080,x
|
||||
ora [L0080],y
|
||||
clc
|
||||
ora L0086,y
|
||||
inc A
|
||||
tcs
|
||||
trb a:L0086
|
||||
ora a:L0086,x
|
||||
asl a:L0086,x
|
||||
ora f:L0089,x
|
||||
jsr L0086
|
||||
and (L0080,x)
|
||||
jsl L0089
|
||||
and $80,S
|
||||
bit z:L0080
|
||||
and z:L0080
|
||||
rol z:L0080
|
||||
and [L0080]
|
||||
plp
|
||||
and #$80
|
||||
rol A
|
||||
pld
|
||||
bit a:L0086
|
||||
and a:L0086
|
||||
rol a:L0086
|
||||
and f:L0089
|
||||
bmi L1089
|
||||
L1089: and (L0080),y
|
||||
and (L0080)
|
||||
and ($80,S),y
|
||||
bit z:L0080,x
|
||||
and z:L0080,x
|
||||
rol z:L0080,x
|
||||
and [L0080],y
|
||||
sec
|
||||
and L0086,y
|
||||
dec A
|
||||
tsc
|
||||
bit a:L0086,x
|
||||
and a:L0086,x
|
||||
rol a:L0086,x
|
||||
and f:L0089,x
|
||||
rti
|
||||
|
||||
L10AB: eor (L0080,x)
|
||||
.byte $42,$80
|
||||
eor $80,S
|
||||
.byte $44,$83,$84
|
||||
eor z:L0080
|
||||
lsr z:L0080
|
||||
eor [L0080]
|
||||
pha
|
||||
eor #$80
|
||||
lsr A
|
||||
phk
|
||||
jmp L10C2
|
||||
|
||||
L10C2: eor a:L0086
|
||||
lsr a:L0086
|
||||
eor f:L0089
|
||||
bvc L10CE
|
||||
L10CE: eor (L0080),y
|
||||
eor (L0080)
|
||||
eor ($80,S),y
|
||||
.byte $54,$83,$84
|
||||
eor z:L0080,x
|
||||
lsr z:L0080,x
|
||||
eor [L0080],y
|
||||
cli
|
||||
eor L0086,y
|
||||
phy
|
||||
tcd
|
||||
jml L10E7
|
||||
|
||||
L10E7: eor a:L0086,x
|
||||
lsr a:L0086,x
|
||||
eor f:L0089,x
|
||||
rts
|
||||
|
||||
L10F2: adc (L0080,x)
|
||||
per $0ff6
|
||||
adc $80,S
|
||||
stz z:L0080
|
||||
adc z:L0080
|
||||
ror z:L0080
|
||||
adc [L0080]
|
||||
pla
|
||||
adc #$80
|
||||
ror A
|
||||
rtl
|
||||
|
||||
L1106: jmp (L0086)
|
||||
|
||||
L1109: adc a:L0086
|
||||
ror a:L0086
|
||||
adc f:L0089
|
||||
bvs L1115
|
||||
L1115: adc (L0080),y
|
||||
adc (L0080)
|
||||
adc ($80,S),y
|
||||
stz z:L0080,x
|
||||
adc z:L0080,x
|
||||
ror z:L0080,x
|
||||
adc [L0080],y
|
||||
sei
|
||||
adc L0086,y
|
||||
ply
|
||||
tdc
|
||||
jmp (L0086,x)
|
||||
|
||||
L112C: adc a:L0086,x
|
||||
ror a:L0086,x
|
||||
adc f:L0089,x
|
||||
bra L1138
|
||||
|
||||
L1138: sta (L0080,x)
|
||||
brl L113D
|
||||
|
||||
L113D: sta $80,S
|
||||
sty z:L0080
|
||||
sta z:L0080
|
||||
stx z:L0080
|
||||
sta [L0080]
|
||||
dey
|
||||
bit #$80
|
||||
txa
|
||||
phb
|
||||
sty a:L0086
|
||||
sta a:L0086
|
||||
stx a:L0086
|
||||
sta f:L0089
|
||||
bcc L115B
|
||||
L115B: sta (L0080),y
|
||||
sta (L0080)
|
||||
sta ($80,S),y
|
||||
sty z:L0080,x
|
||||
sta z:L0080,x
|
||||
stx z:L0080,y
|
||||
sta [L0080],y
|
||||
tya
|
||||
sta L0086,y
|
||||
txs
|
||||
txy
|
||||
stz a:L0086
|
||||
sta a:L0086,x
|
||||
stz a:L0086,x
|
||||
sta f:L0089,x
|
||||
ldy #$80
|
||||
lda (L0080,x)
|
||||
ldx #$80
|
||||
lda $80,S
|
||||
ldy z:L0080
|
||||
lda z:L0080
|
||||
ldx z:L0080
|
||||
lda [L0080]
|
||||
tay
|
||||
lda #$80
|
||||
tax
|
||||
plb
|
||||
ldy a:L0086
|
||||
lda a:L0086
|
||||
ldx a:L0086
|
||||
lda f:L0089
|
||||
bcs L11A0
|
||||
L11A0: lda (L0080),y
|
||||
lda (L0080)
|
||||
lda ($80,S),y
|
||||
ldy z:L0080,x
|
||||
lda z:L0080,x
|
||||
ldx z:L0080,y
|
||||
lda [L0080],y
|
||||
clv
|
||||
lda L0086,y
|
||||
tsx
|
||||
tyx
|
||||
ldy a:L0086,x
|
||||
lda a:L0086,x
|
||||
ldx a:L0086,y
|
||||
lda f:L0089,x
|
||||
cpy #$80
|
||||
cmp (L0080,x)
|
||||
rep #$00
|
||||
cmp $80,S
|
||||
cpy z:L0080
|
||||
cmp z:L0080
|
||||
dec z:L0080
|
||||
cmp [L0080]
|
||||
iny
|
||||
cmp #$80
|
||||
dex
|
||||
wai
|
||||
cpy a:L0086
|
||||
cmp a:L0086
|
||||
dec a:L0086
|
||||
cmp f:L0089
|
||||
bne L11E5
|
||||
L11E5: cmp (L0080),y
|
||||
cmp (L0080)
|
||||
cmp ($80,S),y
|
||||
pei (L0080)
|
||||
cmp z:L0080,x
|
||||
dec z:L0080,x
|
||||
cmp [L0080],y
|
||||
cld
|
||||
cmp L0086,y
|
||||
phx
|
||||
stp
|
||||
|
||||
L11F9: jml [L0086]
|
||||
|
||||
L11FC: cmp a:L0086,x
|
||||
dec a:L0086,x
|
||||
cmp f:L0089,x
|
||||
cpx #$80
|
||||
sbc (L0080,x)
|
||||
sep #$00
|
||||
sbc $80,S
|
||||
cpx z:L0080
|
||||
sbc z:L0080
|
||||
inc z:L0080
|
||||
sbc [L0080]
|
||||
inx
|
||||
sbc #$80
|
||||
nop
|
||||
xba
|
||||
cpx a:L0086
|
||||
sbc a:L0086
|
||||
inc a:L0086
|
||||
sbc f:L0089
|
||||
beq L122A
|
||||
L122A: sbc (L0080),y
|
||||
sbc (L0080)
|
||||
sbc ($80,S),y
|
||||
pea L0086
|
||||
sbc z:L0080,x
|
||||
inc z:L0080,x
|
||||
sbc [L0080],y
|
||||
sed
|
||||
sbc L0086,y
|
||||
plx
|
||||
xce
|
||||
jsr (L0086,x)
|
||||
sbc a:L0086,x
|
||||
inc a:L0086,x
|
||||
sbc f:L0089,x
|
||||
.org $0080
|
||||
L0080: bit z:L0082
|
||||
L0082: bit z:L0082
|
||||
bit L0082
|
||||
L0086: bit a:L0086
|
||||
L0089: lda f:L0089
|
||||
Loading…
x
Reference in New Issue
Block a user