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https://github.com/fadden/6502bench.git
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c535201884
We want to be able to declare a symbol for a struct or buffer that spans the entire width, and then declare more-specific items within it that take precedence. This worked for everything but the very first byte, because on an exact match we were resolving the conflict alphabetically. Now, if one is wider than the other, we use the narrower definition. Updated 2021-external-symbols with some additional test cases.
176 lines
4.6 KiB
ArmAsm
176 lines
4.6 KiB
ArmAsm
.setcpu "6502"
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FatConst = $4000
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OverVar = $40
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CodeWrap = $0f00 ;encases program
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SameName1 = $2000
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SameName2 = $2011
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SameName3 = $2022
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SameValA_A = $2100
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SameValB_A = $2110
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SameValC_C = $2120
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ChkProj1 = $2200
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ProjSym1 = $2202
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ChkProj2 = $2204
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ProjSym2 = $220a
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Over1 = $3000 ;$3000-300f, inclusive
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Over2 = $3002 ;$3002-3009
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Over3 = $3006 ;$3006-300c
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Over2a = $3006 ;$3006
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SepOver1 = $3100 ;$3100-3103, inclusive
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SepOver2 = $3102 ;$3102-3105, inclusive
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ReadOnly = $5000 ;R
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WriteOnly = $5001 ;W
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WriteOnly2 = $5002
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OverA_0 = $6000 ;should win, alphabetically
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OverA_1 = $6100 ;should win, alphabetically
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OverB_2 = $6200 ;should win because narrower
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OverB_3 = $6300 ;should win because narrower
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OverA_4 = $6401 ;(ref OverA_4+2)
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OverB_4 = $6402 ;should win because closer
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OverC_4 = $6403
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MultiRead = $c004 ;$c004/5/6, read-only
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MultiWrite = $c005 ;$c005/6/7, write-only
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AlsoMultiZero = $c010 ;wins (alphabetically)
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NonMultiOver = $c010 ;winner
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MultiOne = $c021
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MoreMultiZero = $c100
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AlsoMoreMultiZero = $c110 ;winner
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BankWrap = $fff0
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; .segment "SEG000"
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.org $1000
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L1000: lda CodeWrap+255
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ldx L1000
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ldy L1000+1
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lda L1160
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lda CodeWrap+$261
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lda CodeWrap+$268
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nop
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lda $1ffe
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lda SameName1-1
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lda SameName1
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lda $200f
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lda SameName2-1
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lda SameName2
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lda $2012
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lda $201f
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lda $2020
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lda SameName3-1
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lda SameName3
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nop
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lda SameValA_A
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lda SameValB_A
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lda SameValC_C
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nop
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lda $21fe
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lda ChkProj1-1
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lda ChkProj1
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lda ChkProj1+1
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lda ProjSym1
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lda ProjSym1+1
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lda ProjSym1+2
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lda ProjSym1+3
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lda ChkProj2+2
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lda ChkProj2+3
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lda $2208
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lda ProjSym2-1
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lda ProjSym2
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lda $220b
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nop
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lda $2ffe
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lda Over1-1
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lda Over1
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lda Over1+1
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lda Over2
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lda Over2+1
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lda Over2+2
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lda Over2+3
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lda Over2a
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lda Over3+1
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lda Over3+2
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lda Over3+3
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lda Over3+4
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lda Over3+5
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lda Over3+6
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lda Over1+13
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lda Over1+14
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lda Over1+15
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lda $3010
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nop
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lda $30fe
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lda SepOver1-1
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lda SepOver1
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lda SepOver1+1
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lda SepOver1+2
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lda SepOver1+3
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lda SepOver2+2
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lda SepOver2+3
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lda $3106
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nop
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LocalVar .set $41
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ldx $3e
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ldx $3f
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ldx OverVar
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ldx LocalVar
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ldx LocalVar+1
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ldx OverVar+3
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ldx $44
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nop
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lda FatConst-1
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lda $4000
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lda $4001
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lda BankWrap+8
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lda <BankWrap-232
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nop
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lda ReadOnly
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lda ReadOnly+1
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ldx $5002
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ldy $5003
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sta WriteOnly-1
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sta WriteOnly
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stx WriteOnly2
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sty $5003
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nop
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bit AlsoMultiZero-16
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bit NonMultiOver
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bit AlsoMultiZero+16
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bit AlsoMultiZero+224
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nop
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bit MultiOne-32
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bit MultiOne-16
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bit MultiOne
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nop
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bit $c002
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bit $c012
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bit $c022
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nop
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lda MultiRead-1
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lda MultiRead
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lda MultiRead+1
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lda MultiRead+2
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lda $c007
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sta MultiWrite-1
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sta MultiWrite
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sta MultiWrite+1
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sta MultiWrite+2
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sta $c008
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nop
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jsr MultiRead+1
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nop
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bit MoreMultiZero
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bit AlsoMoreMultiZero
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bit MoreMultiZero+32
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bit MoreMultiZero+240
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nop
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lda OverA_0
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lda OverA_1
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lda OverB_2
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lda OverB_3+4
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lda OverA_4-1
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lda OverA_4
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lda OverB_4
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lda OverC_4
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L1160: rts
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