mirror of
https://github.com/byteworksinc/ORCA-C.git
synced 2024-05-29 04:41:27 +00:00
a4bffe65e5
This is necessary to compile some very large functions, such as the main interpreter loop in Git. This consumes about 8K of extra memory for the additional label records.
116 lines
3.3 KiB
NASM
116 lines
3.3 KiB
NASM
mcopy cgc.macros
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****************************************************************
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*
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* CnvSX - Convert floating point to SANE extended
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*
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* Inputs:
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* rec - pointer to a record
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*
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****************************************************************
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*
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CnvSX start
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rec equ 4 record containing values
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rec_real equ 0 disp to real value
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rec_ext equ 8 disp to extended (SANE) value
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tsc set up DP
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phd
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tcd
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ph4 rec push addr of real number
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clc push addr of SANE number
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lda rec
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adc #rec_ext
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tax
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lda rec+2
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adc #0
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pha
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phx
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fd2x convert TOS to extended
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move4 0,4 return
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pld
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pla
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pla
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rtl
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end
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****************************************************************
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*
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* CnvSC - Convert floating point to SANE comp
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*
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* Inputs:
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* rec - pointer to a record
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*
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****************************************************************
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*
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CnvSC start
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rec equ 4 record containing values
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rec_real equ 0 disp to real value
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rec_ext equ 8 disp to extended (SANE) value
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rec_cmp equ 18 disp to comp (SANE) value
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tsc set up DP
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phd
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tcd
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ph4 rec push addr of real number
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clc push addr of SANE number
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lda rec
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adc #rec_ext
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tax
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lda rec+2
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adc #0
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pha
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phx
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fd2x convert TOS to extended
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clc push addr of SANE number
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lda rec
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adc #rec_ext
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tax
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lda rec+2
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adc #0
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pha
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phx
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clc push addr of COMP number
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lda rec
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adc #rec_cmp
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tax
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lda rec+2
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adc #0
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pha
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phx
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fx2c convert TOS to extended
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move4 0,4 return
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pld
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pla
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pla
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rtl
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end
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****************************************************************
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*
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* InitLabels - initialize the labels array
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*
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* Outputs:
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* labelTab - initialized
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* intLabel - initialized
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*
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****************************************************************
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*
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InitLabels start
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maxLabel equ 3200
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! with labelTab[0] do begin
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lda #-1 val := -1;
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sta labelTab+6
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sta labelTab+8
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stz labelTab defined := false;
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stz labelTab+2 chain := nil;
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stz labelTab+4
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! end; {with}
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ldx #labelTab for i := 1 to maxLabel do
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ldy #labelTab+10 labelTab[i] := labelTab[0];
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lda #maxLabel*10-1
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mvn labelTab,labelTab
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stz intLabel intLabel := 0;
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rtl
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end
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