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Test subtracting labels

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ISSOtm
2020-01-24 02:50:24 +01:00
parent 0665146dcd
commit 51d5ff0567
3 changed files with 73 additions and 0 deletions
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test/asm/label-diff.asm Normal file
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PUSHS
SECTION "floating", ROM0
Known: ; This symbol is known to be a label, but its value is not known yet
ds 4
Known2: ; This symbol isn't known either, but the difference is known (4)
SECTION "fixed", ROM0[42]
Constant: ; This label's value is known to be 42
SECTION "fixed 2", ROM0[69]
Constant2: ; Same as above
print_diff: MACRO
PRINTV (\1) - (\2)
PRINTT "\n"
PRINTV (\2) - (\1)
PRINTT "\n"
ENDM
POPS ; Ensure we are in neither section
; TODO: uncomment all that can be, there is seriously room for improvement here
; Diffing two constants should work
; But it doesn't yet print_diff Constant, Constant2
; Diffing two labels in the same SECTION as well
print_diff Known2, Known
; Diffing a constant and a "floating" label cannot work
; ...And that causes a fatal error print_diff Constant, Known
; Diffing a constant and a ref cannot work
; ...And that causes a fatal error print_diff Constant, Unknown
; Diffing a floating label and a ref cannot work
; ...And that causes a fatal error print_diff Known, Unknown
; Now let's fiddle with PC
SECTION "fixed PC", ROM0[420]
; Diffing a constant and PC should work
; But it doesn't yet print_diff Constant, @
; Diffing a floating label and PC cannot work
; ...And that causes a fatal error print_diff Known, @
; Diffinf a ref and PC cannot work
; ...And that causes a fatal error print_diff Unknown, @
; Diffing PC and PC should work
print_diff @, @
; Diffing PC and a label from here should work
LocalFixed:
; But it doesn't yet print_diff LocalFixed, @
SECTION "Floating PC", ROM0
; Diffing a constant and PC cannot work
; ...And that causes a fatal error print_diff Constant, @
; Diffing a floating label and PC cannot work
; ...And that causes a fatal error print_diff Known, @
; Diffinf a ref and PC cannot work
; ...And that causes a fatal error print_diff Unknown, @
; Diffing PC and PC should work
print_diff @, @
; Diffing PC and a label from here should work
LocalFloating:
print_diff LocalFloating, @

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test/asm/label-diff.err Normal file
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test/asm/label-diff.out Normal file
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$4
$FFFFFFFC
$0
$0
$0
$0
$0
$0