o Move the contents of <machine/floatingpoint.h> over to
<machine/ieeefp.h> where it belongs. o Remove the i386 specific inclusion of <machine/floatingpoint.h> from <ieeefp.h>, now that including <machine/ieeefp.h> is enough for all architectures. o Allow <machine/ieeefp.h> to inline the functions exposed by the headers by checking for _IEEEFP_INLINED_ in the MI header. When defined, prototypes are not given and it is assumed that the MD headers, when inlining only a subset of the functions provide prototypes for the functions not being inlined. Based on patch from: Terry Lambert <tlambert2@mindspring.com> Tested with: make release.
This commit is contained in:
Marcel Moolenaar
parent
bc82f9036f
commit
9d683ffd4b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=109520
@ -12,9 +12,7 @@
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#include <sys/cdefs.h>
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#include <machine/ieeefp.h>
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#ifdef __i386__
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#include <machine/floatingpoint.h>
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#else /* !__i386__ */
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#if !defined(_IEEEFP_INLINED_)
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__BEGIN_DECLS
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extern fp_rnd_t fpgetround(void);
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extern fp_rnd_t fpsetround(fp_rnd_t);
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@ -23,6 +21,6 @@ extern fp_except_t fpsetmask(fp_except_t);
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extern fp_except_t fpgetsticky(void);
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extern fp_except_t fpsetsticky(fp_except_t);
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__END_DECLS
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#endif /* __i386__ */
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#endif /* !_IEEEFP_INLINED_ */
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#endif /* _IEEEFP_H_ */
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@ -37,94 +37,6 @@
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#ifndef _FLOATINGPOINT_H_
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#define _FLOATINGPOINT_H_
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/*
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* IEEE floating point structure and function definitions
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*/
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/*-
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* XXX the following undocumented pollution is exported:
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* fpsetsticky().
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* FP*FLD, FP*OFF and FP*REG from <machine/ieeefp.h>
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*/
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#include <sys/cdefs.h>
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#include <machine/ieeefp.h>
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#ifdef __GNUC__
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#define __fldenv(addr) __asm __volatile("fldenv %0" : : "m" (*(addr)))
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#define __fnstenv(addr) __asm __volatile("fnstenv %0" : "=m" (*(addr)))
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#define __fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
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#define __fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
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/*
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* return the contents of a FP register
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*/
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static __inline__ int
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__fpgetreg(int _reg)
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{
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unsigned short _mem;
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/*-
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* This is more efficient than it looks. The switch gets optimized
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* away if _reg is constant.
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*
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* The default case only supports _reg == 0. We could handle more
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* registers (e.g., tags) using fnstenv, but the interface doesn't
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* support more.
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*/
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switch(_reg) {
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default:
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__fnstcw(&_mem);
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break;
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case FP_STKY_REG:
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__fnstsw(&_mem);
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break;
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}
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return _mem;
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}
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/*
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* set a FP mode; return previous mode
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*/
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static __inline__ int
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__fpsetreg(int _m, int _reg, int _fld, int _off)
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{
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unsigned _env[7];
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unsigned _p;
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/*
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* _reg == 0 could be handled better using fnstcw/fldcw.
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*/
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__fnstenv(_env);
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_p = (_env[_reg] & _fld) >> _off;
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_env[_reg] = (_env[_reg] & ~_fld) | (_m << _off & _fld);
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__fldenv(_env);
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return _p;
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}
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#endif /* __GNUC__ */
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/*
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* SysV/386 FP control interface
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*/
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#define fpgetround() ((fp_rnd_t) \
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((__fpgetreg(FP_RND_REG) & FP_RND_FLD) >> FP_RND_OFF))
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#define fpsetround(m) ((fp_rnd_t) \
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__fpsetreg((m), FP_RND_REG, FP_RND_FLD, FP_RND_OFF))
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#define fpgetprec() ((fp_prec_t) \
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((__fpgetreg(FP_PRC_REG) & FP_PRC_FLD) >> FP_PRC_OFF))
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#define fpsetprec(m) ((fp_prec_t) \
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__fpsetreg((m), FP_PRC_REG, FP_PRC_FLD, FP_PRC_OFF))
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#define fpgetmask() ((fp_except_t) \
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((~__fpgetreg(FP_MSKS_REG) & FP_MSKS_FLD) >> FP_MSKS_OFF))
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#define fpsetmask(m) ((fp_except_t) \
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(~__fpsetreg(~(m), FP_MSKS_REG, FP_MSKS_FLD, FP_MSKS_OFF)) & \
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(FP_MSKS_FLD >> FP_MSKS_OFF))
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#define fpgetsticky() ((fp_except_t) \
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((__fpgetreg(FP_STKY_REG) & FP_STKY_FLD) >> FP_STKY_OFF))
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#define fpresetsticky(m) ((fp_except_t) \
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__fpsetreg(0, FP_STKY_REG, (m), FP_STKY_OFF))
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#define fpsetsticky(m) fpresetsticky(m)
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#endif /* !_FLOATINGPOINT_H_ */
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@ -98,4 +98,84 @@ typedef enum {
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#define FP_RND_OFF 10 /* round control offset */
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#define FP_STKY_OFF 0 /* sticky flags offset */
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#ifdef __GNUC__
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#define __fldenv(addr) __asm __volatile("fldenv %0" : : "m" (*(addr)))
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#define __fnstenv(addr) __asm __volatile("fnstenv %0" : "=m" (*(addr)))
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#define __fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
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#define __fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
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/*
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* return the contents of a FP register
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*/
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static __inline__ int
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__fpgetreg(int _reg)
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{
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unsigned short _mem;
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/*-
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* This is more efficient than it looks. The switch gets optimized
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* away if _reg is constant.
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*
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* The default case only supports _reg == 0. We could handle more
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* registers (e.g., tags) using fnstenv, but the interface doesn't
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* support more.
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*/
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switch(_reg) {
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default:
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__fnstcw(&_mem);
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break;
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case FP_STKY_REG:
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__fnstsw(&_mem);
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break;
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}
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return _mem;
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}
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/*
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* set a FP mode; return previous mode
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*/
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static __inline__ int
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__fpsetreg(int _m, int _reg, int _fld, int _off)
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{
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unsigned _env[7];
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unsigned _p;
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/*
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* _reg == 0 could be handled better using fnstcw/fldcw.
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*/
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__fnstenv(_env);
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_p = (_env[_reg] & _fld) >> _off;
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_env[_reg] = (_env[_reg] & ~_fld) | (_m << _off & _fld);
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__fldenv(_env);
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return _p;
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}
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#endif /* __GNUC__ */
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/*
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* SysV/386 FP control interface
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*/
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#define fpgetround() ((fp_rnd_t) \
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((__fpgetreg(FP_RND_REG) & FP_RND_FLD) >> FP_RND_OFF))
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#define fpsetround(m) ((fp_rnd_t) \
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__fpsetreg((m), FP_RND_REG, FP_RND_FLD, FP_RND_OFF))
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#define fpgetprec() ((fp_prec_t) \
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((__fpgetreg(FP_PRC_REG) & FP_PRC_FLD) >> FP_PRC_OFF))
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#define fpsetprec(m) ((fp_prec_t) \
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__fpsetreg((m), FP_PRC_REG, FP_PRC_FLD, FP_PRC_OFF))
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#define fpgetmask() ((fp_except_t) \
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((~__fpgetreg(FP_MSKS_REG) & FP_MSKS_FLD) >> FP_MSKS_OFF))
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#define fpsetmask(m) ((fp_except_t) \
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(~__fpsetreg(~(m), FP_MSKS_REG, FP_MSKS_FLD, FP_MSKS_OFF)) & \
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(FP_MSKS_FLD >> FP_MSKS_OFF))
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#define fpgetsticky() ((fp_except_t) \
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((__fpgetreg(FP_STKY_REG) & FP_STKY_FLD) >> FP_STKY_OFF))
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#define fpresetsticky(m) ((fp_except_t) \
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__fpsetreg(0, FP_STKY_REG, (m), FP_STKY_OFF))
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#define fpsetsticky(m) fpresetsticky(m)
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/* Suppress prototypes in the MI header. */
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#define _IEEEFP_INLINED_ 1
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#endif /* !_MACHINE_IEEEFP_H_ */
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@ -37,94 +37,6 @@
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#ifndef _FLOATINGPOINT_H_
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#define _FLOATINGPOINT_H_
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/*
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* IEEE floating point structure and function definitions
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*/
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/*-
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* XXX the following undocumented pollution is exported:
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* fpsetsticky().
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* FP*FLD, FP*OFF and FP*REG from <machine/ieeefp.h>
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*/
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#include <sys/cdefs.h>
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#include <machine/ieeefp.h>
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#ifdef __GNUC__
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#define __fldenv(addr) __asm __volatile("fldenv %0" : : "m" (*(addr)))
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#define __fnstenv(addr) __asm __volatile("fnstenv %0" : "=m" (*(addr)))
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#define __fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
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#define __fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
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/*
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* return the contents of a FP register
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*/
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static __inline__ int
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__fpgetreg(int _reg)
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{
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unsigned short _mem;
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/*-
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* This is more efficient than it looks. The switch gets optimized
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* away if _reg is constant.
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*
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* The default case only supports _reg == 0. We could handle more
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* registers (e.g., tags) using fnstenv, but the interface doesn't
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* support more.
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*/
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switch(_reg) {
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default:
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__fnstcw(&_mem);
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break;
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case FP_STKY_REG:
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__fnstsw(&_mem);
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break;
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}
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return _mem;
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}
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/*
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* set a FP mode; return previous mode
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*/
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static __inline__ int
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__fpsetreg(int _m, int _reg, int _fld, int _off)
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{
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unsigned _env[7];
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unsigned _p;
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/*
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* _reg == 0 could be handled better using fnstcw/fldcw.
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*/
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__fnstenv(_env);
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_p = (_env[_reg] & _fld) >> _off;
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_env[_reg] = (_env[_reg] & ~_fld) | (_m << _off & _fld);
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__fldenv(_env);
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return _p;
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}
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#endif /* __GNUC__ */
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/*
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* SysV/386 FP control interface
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*/
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#define fpgetround() ((fp_rnd_t) \
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((__fpgetreg(FP_RND_REG) & FP_RND_FLD) >> FP_RND_OFF))
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#define fpsetround(m) ((fp_rnd_t) \
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__fpsetreg((m), FP_RND_REG, FP_RND_FLD, FP_RND_OFF))
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#define fpgetprec() ((fp_prec_t) \
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((__fpgetreg(FP_PRC_REG) & FP_PRC_FLD) >> FP_PRC_OFF))
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#define fpsetprec(m) ((fp_prec_t) \
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__fpsetreg((m), FP_PRC_REG, FP_PRC_FLD, FP_PRC_OFF))
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#define fpgetmask() ((fp_except_t) \
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((~__fpgetreg(FP_MSKS_REG) & FP_MSKS_FLD) >> FP_MSKS_OFF))
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#define fpsetmask(m) ((fp_except_t) \
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(~__fpsetreg(~(m), FP_MSKS_REG, FP_MSKS_FLD, FP_MSKS_OFF)) & \
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(FP_MSKS_FLD >> FP_MSKS_OFF))
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#define fpgetsticky() ((fp_except_t) \
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((__fpgetreg(FP_STKY_REG) & FP_STKY_FLD) >> FP_STKY_OFF))
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#define fpresetsticky(m) ((fp_except_t) \
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__fpsetreg(0, FP_STKY_REG, (m), FP_STKY_OFF))
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#define fpsetsticky(m) fpresetsticky(m)
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#endif /* !_FLOATINGPOINT_H_ */
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@ -98,4 +98,84 @@ typedef enum {
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#define FP_RND_OFF 10 /* round control offset */
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#define FP_STKY_OFF 0 /* sticky flags offset */
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#ifdef __GNUC__
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#define __fldenv(addr) __asm __volatile("fldenv %0" : : "m" (*(addr)))
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#define __fnstenv(addr) __asm __volatile("fnstenv %0" : "=m" (*(addr)))
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#define __fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
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#define __fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
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/*
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* return the contents of a FP register
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*/
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static __inline__ int
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__fpgetreg(int _reg)
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{
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unsigned short _mem;
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/*-
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* This is more efficient than it looks. The switch gets optimized
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* away if _reg is constant.
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*
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* The default case only supports _reg == 0. We could handle more
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* registers (e.g., tags) using fnstenv, but the interface doesn't
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* support more.
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*/
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switch(_reg) {
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default:
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__fnstcw(&_mem);
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break;
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case FP_STKY_REG:
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__fnstsw(&_mem);
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break;
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}
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return _mem;
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}
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/*
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* set a FP mode; return previous mode
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*/
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static __inline__ int
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__fpsetreg(int _m, int _reg, int _fld, int _off)
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{
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unsigned _env[7];
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unsigned _p;
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/*
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* _reg == 0 could be handled better using fnstcw/fldcw.
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*/
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__fnstenv(_env);
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_p = (_env[_reg] & _fld) >> _off;
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_env[_reg] = (_env[_reg] & ~_fld) | (_m << _off & _fld);
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__fldenv(_env);
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return _p;
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}
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#endif /* __GNUC__ */
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/*
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* SysV/386 FP control interface
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*/
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#define fpgetround() ((fp_rnd_t) \
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((__fpgetreg(FP_RND_REG) & FP_RND_FLD) >> FP_RND_OFF))
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#define fpsetround(m) ((fp_rnd_t) \
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__fpsetreg((m), FP_RND_REG, FP_RND_FLD, FP_RND_OFF))
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#define fpgetprec() ((fp_prec_t) \
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((__fpgetreg(FP_PRC_REG) & FP_PRC_FLD) >> FP_PRC_OFF))
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#define fpsetprec(m) ((fp_prec_t) \
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__fpsetreg((m), FP_PRC_REG, FP_PRC_FLD, FP_PRC_OFF))
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#define fpgetmask() ((fp_except_t) \
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((~__fpgetreg(FP_MSKS_REG) & FP_MSKS_FLD) >> FP_MSKS_OFF))
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#define fpsetmask(m) ((fp_except_t) \
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(~__fpsetreg(~(m), FP_MSKS_REG, FP_MSKS_FLD, FP_MSKS_OFF)) & \
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(FP_MSKS_FLD >> FP_MSKS_OFF))
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#define fpgetsticky() ((fp_except_t) \
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((__fpgetreg(FP_STKY_REG) & FP_STKY_FLD) >> FP_STKY_OFF))
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#define fpresetsticky(m) ((fp_except_t) \
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__fpsetreg(0, FP_STKY_REG, (m), FP_STKY_OFF))
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#define fpsetsticky(m) fpresetsticky(m)
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/* Suppress prototypes in the MI header. */
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#define _IEEEFP_INLINED_ 1
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#endif /* !_MACHINE_IEEEFP_H_ */
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