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| author | Uros Bizjak <uros@gcc.gnu.org> | 2007-05-19 21:19:08 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2007-05-19 21:19:08 +0200 |
| commit | e9d416168f5d1782664609c71972e41eb2523a21 (patch) | |
| tree | 08728cd0fea3aded65bcd316bff0c701fb67097e /gcc | |
| parent | 7060db96db1a93b956a065ab05fc2995d5af17f1 (diff) | |
| download | gcc-e9d416168f5d1782664609c71972e41eb2523a21.zip gcc-e9d416168f5d1782664609c71972e41eb2523a21.tar.gz gcc-e9d416168f5d1782664609c71972e41eb2523a21.tar.bz2 | |
sfp-machine.h (FP_EX_INVALID, [...]): New constants.
* config/i386/sfp-machine.h (FP_EX_INVALID, FP_EX_DENORM,
FP_EXP_DIVZERO, FP_EX_OVERFLOW, FP_EX_UNDERFLOW, FP_EX_INEXACT):
New constants.
(struct fenv): New structure.
(FP_HANDLE_EXCEPTIONS): New define.
(FP_RND_NEAREST, FP_RND_ZERO, FP_RND_PINF, FP_RND_MINF): New constants.
(_FP_DECL_EXP): New define.
(FP_INIT_ROUNDMODE): New define.
(FP_ROUNDMODE): New define.
From-SVN: r124857
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 16 | ||||
| -rw-r--r-- | gcc/config/i386/sfp-machine.h | 76 |
2 files changed, 90 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0c0fdcc..dc0ed07 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,15 @@ +2007-05-19 Uros Bizjak <ubizjak@gmail.com> + + * config/i386/sfp-machine.h (FP_EX_INVALID, FP_EX_DENORM, + FP_EXP_DIVZERO, FP_EX_OVERFLOW, FP_EX_UNDERFLOW, FP_EX_INEXACT): + New constants. + (struct fenv): New structure. + (FP_HANDLE_EXCEPTIONS): New define. + (FP_RND_NEAREST, FP_RND_ZERO, FP_RND_PINF, FP_RND_MINF): New constants. + (_FP_DECL_EXP): New define. + (FP_INIT_ROUNDMODE): New define. + (FP_ROUNDMODE): New define. + 2007-05-19 Manuel Lopez-Ibanez <manu@gcc.gnu.org> * doc/invoke.texi (Warning Options): Add -Wconversion-sign. @@ -13,13 +25,13 @@ (convert_and_check): Don't check warnings if the conversion failed. 2007-05-19 Andy Hutchinson <HutchinsonAndy@netscape.net> - Anatoly Sokolov <aesok@dol.ru> + Anatoly Sokolov <aesok@dol.ru> * config/avr/avr-protos.h (expand_prologue, expand_epilogue, avr_epilogue_uses) : Add declaration. * config/avr/predicates.md (avr_sp_immediate_operand): New predicate. * config/avr/constraints.md (R): New constraint. - config/avr/avr.md (SREG_ADDR, UNSPEC_SEI, UNSPEC_CLI, + config/avr/avr.md (SREG_ADDR, UNSPEC_SEI, UNSPEC_CLI, UNSPECV_PROLOGUE_SAVES, UNSPECV_EPILOGUE_RESTORES): New constants. (*pop1, *pop2, *pop3, *pop4, *pop5): Combine into ... (*addhi3_sp_R_pc2, *addhi3_sp_R_pc3): ... these patterns. diff --git a/gcc/config/i386/sfp-machine.h b/gcc/config/i386/sfp-machine.h index d440e1d..4a4e354 100644 --- a/gcc/config/i386/sfp-machine.h +++ b/gcc/config/i386/sfp-machine.h @@ -44,6 +44,82 @@ typedef unsigned int UTItype __attribute__((mode(TI))); R##_c = FP_CLS_NAN; \ } while (0) +#define FP_EX_INVALID 0x01 +#define FP_EX_DENORM 0x02 +#define FP_EX_DIVZERO 0x04 +#define FP_EX_OVERFLOW 0x08 +#define FP_EX_UNDERFLOW 0x10 +#define FP_EX_INEXACT 0x20 + +struct fenv +{ + unsigned short int __control_word; + unsigned short int __unused1; + unsigned short int __status_word; + unsigned short int __unused2; + unsigned short int __tags; + unsigned short int __unused3; + unsigned int __eip; + unsigned short int __cs_selector; + unsigned int __opcode:11; + unsigned int __unused4:5; + unsigned int __data_offset; + unsigned short int __data_selector; + unsigned short int __unused5; +}; + +#define FP_HANDLE_EXCEPTIONS \ + do { \ + if (_fex & FP_EX_INVALID) \ + { \ + float f = 0.0; \ + __asm__ __volatile__ ("divss %0, %0 " : : "x" (f)); \ + } \ + if (_fex & FP_EX_DIVZERO) \ + { \ + float f = 1.0, g = 0.0; \ + __asm__ __volatile__ ("divss %1, %0" : : "x" (f), "x" (g)); \ + } \ + if (_fex & FP_EX_OVERFLOW) \ + { \ + struct fenv temp; \ + __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ + temp.__status_word |= FP_EX_OVERFLOW; \ + __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ + __asm__ __volatile__ ("fwait"); \ + } \ + if (_fex & FP_EX_UNDERFLOW) \ + { \ + struct fenv temp; \ + __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ + temp.__status_word |= FP_EX_UNDERFLOW; \ + __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ + __asm__ __volatile__ ("fwait"); \ + } \ + if (_fex & FP_EX_INEXACT) \ + { \ + struct fenv temp; \ + __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ + temp.__status_word |= FP_EX_INEXACT; \ + __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ + __asm__ __volatile__ ("fwait"); \ + } \ + } while (0) + +#define FP_RND_NEAREST 0 +#define FP_RND_ZERO 0xc00 +#define FP_RND_PINF 0x800 +#define FP_RND_MINF 0x400 + +#define _FP_DECL_EX \ + unsigned short _fcw __attribute__ ((unused)) = FP_RND_NEAREST + +#define FP_INIT_ROUNDMODE \ + do { \ + __asm__ ("fnstcw %0" : "=m" (_fcw)); \ + } while (0) + +#define FP_ROUNDMODE (_fcw & 0xc00) #define __LITTLE_ENDIAN 1234 #define __BIG_ENDIAN 4321 |