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root / tests / test-i386-shift.h @ 379ca80d

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#define exec_op glue(exec_, OP)
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#define exec_opl glue(glue(exec_, OP), l)
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#define exec_opw glue(glue(exec_, OP), w)
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#define exec_opb glue(glue(exec_, OP), b)
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#define EXECSHIFT(size, res, s1, flags) \
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    asm ("push %4\n\t"\
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         "popf\n\t"\
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         stringify(OP) size " %%cl, %" size "0\n\t" \
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         "pushf\n\t"\
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         "popl %1\n\t"\
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         : "=q" (res), "=g" (flags)\
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         : "c" (s1), "0" (res), "1" (flags));
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void exec_opl(int s0, int s1, int iflags)
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{
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    int res, flags;
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    res = s0;
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    flags = iflags;
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    EXECSHIFT("", res, s1, flags);
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    /* overflow is undefined if count != 1 */
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    if (s1 != 1)
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      flags &= ~CC_O;
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    printf("%-10s A=%08x B=%08x R=%08x CCIN=%04x CC=%04x\n",
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           stringify(OP) "l", s0, s1, res, iflags, flags & CC_MASK);
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}
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void exec_opw(int s0, int s1, int iflags)
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{
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    int res, flags;
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    res = s0;
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    flags = iflags;
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    EXECSHIFT("w", res, s1, flags);
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    /* overflow is undefined if count != 1 */
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    if (s1 != 1)
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      flags &= ~CC_O;
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    printf("%-10s A=%08x B=%08x R=%08x CCIN=%04x CC=%04x\n",
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           stringify(OP) "w", s0, s1, res, iflags, flags & CC_MASK);
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}
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void exec_opb(int s0, int s1, int iflags)
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{
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    int res, flags;
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    res = s0;
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    flags = iflags;
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    EXECSHIFT("b", res, s1, flags);
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    /* overflow is undefined if count != 1 */
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    if (s1 != 1)
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      flags &= ~CC_O;
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    printf("%-10s A=%08x B=%08x R=%08x CCIN=%04x CC=%04x\n",
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           stringify(OP) "b", s0, s1, res, iflags, flags & CC_MASK);
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}
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void exec_op(int s0, int s1)
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{
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    exec_opl(s0, s1, 0);
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    exec_opw(s0, s1, 0);
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    exec_opb(s0, s1, 0);
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#ifdef OP_CC
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    exec_opl(s0, s1, CC_C);
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    exec_opw(s0, s1, CC_C);
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    exec_opb(s0, s1, CC_C);
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#endif
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}
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void glue(test_, OP)(void)
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{
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    int i;
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    for(i = 0; i < 32; i++)
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        exec_op(0x12345678, i);
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    for(i = 0; i < 32; i++)
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        exec_op(0x82345678, i);
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}
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void *glue(_test_, OP) __init_call = glue(test_, OP);
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#undef OP
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#undef OP_CC