128 lines
2.1 KiB
Text
128 lines
2.1 KiB
Text
#
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mes 2,EM_WSIZE,EM_PSIZE
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exp $top_size
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#ifdef __sparc
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inp $top_size2
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pro $top_size, 0
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mes 11
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zer EM_PSIZE
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lal 0
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loi EM_PSIZE
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cal $top_size2
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asp 2*EM_PSIZE
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lfr EM_WSIZE
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ret EM_WSIZE
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end 0
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pro $top_size2, 3*EM_WSIZE+3*EM_PSIZE
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#else
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pro $top_size, 3*EM_WSIZE+3*EM_PSIZE
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#endif
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mes 11
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lal 0
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loi EM_PSIZE ; s_brk
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lor 1 ; s_brk SP
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sbs EM_PSIZE ; s_brk-SP
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ret EM_PSIZE ; return size of block to be saved
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end 3*EM_WSIZE+3*EM_PSIZE
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exp $top_save
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#ifdef __sparc
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inp $top_save2
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pro $top_save,0
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mes 11
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lal 0
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loi 2*EM_PSIZE
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cal $top_save2
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asp 2*EM_PSIZE
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lfr EM_WSIZE
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ret EM_WSIZE
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end 0
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pro $top_save2,0
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#else
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pro $top_save, 0
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#endif
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mes 11
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loe 0
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lae 4 ; load line number and file name
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loi EM_PSIZE
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lim ; ignore mask
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lor 0 ; LB
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lal 0
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loi EM_PSIZE ; size of block
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loc EM_PSIZE
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loc EM_WSIZE
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cuu
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dup EM_WSIZE
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stl 0 ; push & store size in 2 bytes
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lor 1 ; SP (the SP BEFORE pushing)
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lor 1 ; SP (address of stack top to save)
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lal EM_PSIZE ; area
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loi EM_PSIZE
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lol 0 ; size
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bls EM_WSIZE ; move whole block
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asp 3*EM_PSIZE+3*EM_WSIZE ; remove the lot from the stack
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loc 1
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ret EM_WSIZE ; return 1
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end 0
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sv
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bss EM_PSIZE, 0, 0
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exp $top_load
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#ifdef __sparc
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inp $top_load1
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pro $top_load,0
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lal 0
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loi EM_PSIZE
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cal $top_load1
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asp EM_PSIZE
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lfr EM_WSIZE
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ret EM_WSIZE
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end 0
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pro $top_load1, 0
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#else
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pro $top_load, 0
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#endif
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mes 11
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lal 0
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loi EM_PSIZE
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lae sv
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sti EM_PSIZE
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lxl 0
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2
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dup EM_PSIZE
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adp -3*EM_PSIZE
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lal 0
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loi EM_PSIZE ; compare target SP with current LB to see if we must
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loi EM_PSIZE
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cmp ; find another LB first
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zgt *1
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dch ; just follow dynamic chain to make sure we find
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; a legal one
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bra *2
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1
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str 0
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lae sv
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loi EM_PSIZE
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loi EM_PSIZE
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str 1 ; restore SP
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asp -EM_PSIZE
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lae sv
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loi EM_PSIZE
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lor 1 ; SP (the SP AFTER, see above)
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adp EM_PSIZE
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lae sv
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loi EM_PSIZE
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lof EM_PSIZE ; size of block
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bls EM_WSIZE ; move block back (SP becomes the SP BEFORE again!)
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asp EM_WSIZE+EM_PSIZE ; drop size + SP
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str 0 ; LB
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sim ; ignore mask
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lae 4
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sti EM_PSIZE
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ste 0 ; line and file
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loc 0
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ret EM_WSIZE ; return 0
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end 0
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