int386.gml

来自「开放源码的编译器open watcom 1.6.0版的源代码」· GML 代码 · 共 56 行

.func int386
#include <i86.h>
int int386( int inter_no,
           const union REGS *in_regs,
           union REGS *out_regs );
.ixfunc2 '&CpuInt' &func
.funcend
.desc begin
The &func function causes the computer's central processor (CPU) to
be interrupted with an interrupt whose number is given by
.arg inter_no.
This function is present in the 386 C libraries and may be executed on
80386/486 systems.
Before the interrupt, the CPU registers are loaded from the structure
located by
.arg in_regs.
Following the interrupt, the structure located by
.arg out_regs
is filled with the contents of the CPU registers.
These structures may be located at the same location in memory.
.np
You should consult the technical documentation for the computer that
you are using to determine the expected register contents before and
after the interrupt in question.
.desc end
.return begin
The &func function returns the value of the CPU EAX register after the
interrupt.
.return end
.see begin
.im seeint int386
.see end
.exmp begin
/*
 * This example clears the screen on DOS
 */
#include <i86.h>

void main()
  {
    union REGS  regs;
.exmp break
    regs.w.cx = 0;
    regs.w.dx = 0x1850;
    regs.h.bh = 7;
    regs.w.ax = 0x0600;
#if defined(__386__) && defined(__DOS__)
    int386( 0x10, &regs, &regs );
#else
    int86( 0x10, &regs, &regs );
#endif
  }
.exmp end
.class Intel
.system