diff options
| -rw-r--r-- | ChangeLog | 9 | ||||
| -rw-r--r-- | sysdeps/powerpc/fpu_control.h | 18 |
2 files changed, 17 insertions, 10 deletions
@@ -1,5 +1,14 @@ 2013-10-04 Joseph Myers <joseph@codesourcery.com> + * sysdeps/powerpc/fpu_control.h [__NO_FPRS__ && !_SOFT_FLOAT] + (_FPU_MASK_OM): Define as 0x04. + [__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_MASK_UM): Define as 0x08. + [__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_RESERVED): Define as + 0x00c10080. + [__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_DEFAULT): Define as + 0x0000003c. + [__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_IEEE): Define as _FPU_DEFAULT. + * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S (__CONTEXT_FUNC_NAME) [__CONTEXT_ENABLE_E500]: Use getcontext_e500. diff --git a/sysdeps/powerpc/fpu_control.h b/sysdeps/powerpc/fpu_control.h index 86e5ab1..e82e791 100644 --- a/sysdeps/powerpc/fpu_control.h +++ b/sysdeps/powerpc/fpu_control.h @@ -38,20 +38,18 @@ extern fpu_control_t __fpu_control; /* masking of interrupts */ # define _FPU_MASK_ZM 0x10 /* zero divide */ -# define _FPU_MASK_OM 0x40 /* overflow */ -# define _FPU_MASK_UM 0x80 /* underflow */ +# define _FPU_MASK_OM 0x04 /* overflow */ +# define _FPU_MASK_UM 0x08 /* underflow */ # define _FPU_MASK_XM 0x40 /* inexact */ # define _FPU_MASK_IM 0x20 /* invalid operation */ -# define _FPU_RESERVED 0xff3fff7f /* These bits are reserved and not changed. */ - -/* The fdlibm code requires no interrupts for exceptions. */ -# define _FPU_DEFAULT 0x00000000 /* Default value. */ +# define _FPU_RESERVED 0x00c10080 /* These bits are reserved and not changed. */ -/* IEEE: same as above, but (some) exceptions; - we leave the 'inexact' exception off. - */ -# define _FPU_IEEE 0x000003c0 +/* Correct IEEE semantics require traps to be enabled at the hardware + level; the kernel then does the emulation and determines whether + generation of signals from those traps was enabled using prctl. */ +# define _FPU_DEFAULT 0x0000003c /* Default value. */ +# define _FPU_IEEE _FPU_DEFAULT /* Type of the control word. */ typedef unsigned int fpu_control_t; |