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Fixed the result of the % operator for longs

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1409 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2002-09-28 19:55:19 +00:00
parent 3aab67401e
commit 689202057c
3 changed files with 55 additions and 37 deletions
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27
libsrc/runtime/ldiv.s
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@@ -8,13 +8,28 @@
; values if $80000000, in which case the negate will fail.
.export tosdiveax
.import poplsargs, udiv32, adjlsres
.importzp ptr1
.import poplsargs, udiv32, negeax
.importzp ptr1, tmp1, tmp2
tosdiveax:
jsr poplsargs ; Get arguments from stack, adjust sign
jsr udiv32 ; Do the division
lda ptr1 ; Result is in (ptr1:sreg)
ldx ptr1+1
jmp adjlsres ; Adjust the sign of the result if needed
jsr udiv32 ; Do the division, result is in (ptr1:sreg)
ldx ptr1+1 ; Load byte 1 of result
; Adjust the sign of the result
lda tmp1 ; Get sign of left operand
eor tmp2 ; Calculate sign of result
bpl Pos ; Jump if result positive
; Result is negative
lda ptr1 ; Load byte 0
jmp negeax ; Negate value
; Result is positive
Pos: lda ptr1
rts