32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
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extern int target_flags;
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enum reg_class
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{
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NO_REGS,
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AREG, DREG, CREG, BREG,
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Q_REGS,
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SIREG, DIREG,
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INDEX_REGS,
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GENERAL_REGS,
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FP_TOP_REG, FP_SECOND_REG,
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FLOAT_REGS,
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ALL_REGS, LIM_REG_CLASSES
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};
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extern enum reg_class regclass_map[17 ];
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extern struct rtx_def *i386_compare_op0, *i386_compare_op1;
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extern struct rtx_def *(*i386_compare_gen)(), *(*i386_compare_gen_eq)();
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extern char *hi_reg_name[];
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extern char *qi_reg_name[];
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extern char *qi_high_reg_name[];
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union flt_or_value { float i; float f; };
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union flt_or_int { int i; float f; };
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long int
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__fixdfsi (a)
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double a;
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{
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{ auto unsigned short ostatus; auto unsigned short nstatus; auto int ret; auto double tmp; &ostatus; &nstatus; &ret; &tmp; asm volatile ("fnstcw %0" : "=m" (ostatus)); nstatus = ostatus | 0x0c00; asm volatile ("fldcw %0" : : "m" (nstatus)); tmp = a ; asm volatile ("fldl %0" : : "m" (tmp)); asm volatile ("fistpl %0" : "=m" (ret)); asm volatile ("fldcw %0" : : "m" (ostatus)); return ret; } ;
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}
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