c8div7.asm

来自「开放源码的编译器open watcom 1.6.0版的源代码」· 汇编 代码 · 共 65 行

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;*****************************************************************************
;*
;*                            Open Watcom Project
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;*  ========================================================================
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;*****************************************************************************


;
; DIVC8         : complex*8 divide
;

.8087

include struct.inc
include mdef.inc

        modstart        divc8

        xref    CplxDivide


        xdefp   RT@C8DIV
defp    RT@C8DIV
        sub     ESP,20                  ; allocate save area for fp registers
        fxch    st(4)                   ; save floating-point registers
        fstp    tbyte ptr 10[ESP]       ; ...
        fxch    st(4)                   ; ...
        fstp    tbyte ptr [ESP]         ; ...
        call    CplxDivide              ; do divide
        fstp    dword ptr [ESI]         ; return complex result
        fstp    dword ptr 4[ESI]        ; ...
        fld     tbyte ptr [ESP]         ; restore floating-point registers
        fld     tbyte ptr 10[ESP]       ; ...
        add     ESP,20                  ; clean up stack
        ret
endproc RT@C8DIV

        endmod
        end

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