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6502bench/SourceGen/SGTestData/Expected/2021-external-symbols_acme.S
Andy McFadden 0d9814d993 Allow explicit widths in project/platform symbols, part 3
Implement multi-byte project/platform symbols by filling out a table
of addresses.  Each symbol is "painted" into the table, replacing
an existing entry if the new entry has higher priority.  This allows
us to handle overlapping entries, giving boosted priority to platform
symbols that are defined in .sym65 files loaded later.

The bounds on project/platform symbols are now rigidly defined.  If
the "nearby" feature is enabled, references to SYM-1 will be picked
up, but we won't go hunting for SYM+1 unless the symbol is at least
two bytes wide.

The cost of adding a symbol to the symbol table is about the same,
but we don't have a quick way to remove a symbol.

Previously, if two platform symbols had the same value, the symbol
with the alphabetically lowest label would win.  Now, the symbol
defined in the most-recently-loaded file wins.  (If you define two
symbols with the same value in the same file, it's still resolved
alphabetically.)  This allows the user to pick the winner by
arranging the load order of the platform symbol files.

Platform symbols now keep a reference to the file ident of the
symbol file that defined them, so we can show the symbols's source
in the Info panel.

These changes altered the behavior of test 2008-address-changes,
which includes some tests on external addresses that are close to
labeled internal addresses.  The previous behavior essentially
treated user labels as being 3 bytes wide and extending outside the
file bounds, which was mildly convenient on occasion but felt a
little skanky.  (We could do with a way to define external symbols
relative to internal symbols, for things like the source address of
code that gets relocated.)

Also, re-enabled some unit tests.

Also, added a bit of identifying stuff to CrashLog.txt.
2019-10-02 16:50:15 -07:00

102 lines
2.4 KiB
ArmAsm

!cpu 6502
OverVar = $40
PlatStart = $1000
SameName1 = $2000
SameName2 = $2011
SameName3 = $2022
SameValA_A = $2100
SameValB_A = $2110
SameValC_C = $2120
ChkProj1 = $2200
ProjSim1 = $2202
ChkProj2 = $2204
ProjSim2 = $220a
Over1 = $3000 ;$3000-300f, inclusive
Over2 = $3002 ;$3002-3009
Over2a = $3006 ;$3006
Over3 = $3006 ;$3006-300c
SepOver1 = $3100 ;$3100-3103, inclusive
SepOver2 = $3102 ;$3102-3105, inclusive
FatConst = $4000
* = $1000
L1000 lda PlatStart-1
ldx L1000
ldy L1000+1
nop
lda $1ffe
lda SameName1-1
lda SameName1
lda $200f
lda SameName2-1
lda SameName2
lda $201f
lda $2020
lda SameName3-1
lda SameName3
nop
lda SameValA_A
lda SameValB_A
lda SameValC_C
nop
lda $21fe
lda ChkProj1-1
lda ChkProj1
lda ChkProj1+1
lda ProjSim1
lda ProjSim1+1
lda ProjSim1+2
lda ProjSim1+3
lda ChkProj2+2
lda ChkProj2+3
lda $2208
lda ProjSim2-1
lda ProjSim2
lda $220b
nop
lda $2ffe
lda Over1-1
lda Over1
lda Over1+1
lda Over2
lda Over2+1
lda Over2+2
lda Over2+3
lda Over2a
lda Over3+1
lda Over3+2
lda Over3+3
lda Over3+4
lda Over3+5
lda Over3+6
lda Over1+13
lda Over1+14
lda Over1+15
lda $3010
nop
lda $30fe
lda SepOver1-1
lda SepOver1
lda SepOver1+1
lda SepOver1+2
lda SepOver1+3
lda SepOver2+2
lda SepOver2+3
lda $3106
nop
!zone Z0000b4
.LocalVar = $41
ldx $3e
ldx OverVar-1
ldx OverVar
ldx .LocalVar
ldx .LocalVar+1
ldx OverVar+3
ldx $44
nop
lda FatConst-1
lda $4000
lda $4001
rts