diff options
| -rw-r--r-- | sys/amd64/amd64/fpu.c | 9 | ||||
| -rw-r--r-- | sys/amd64/isa/npx.c | 9 | ||||
| -rw-r--r-- | sys/i386/isa/npx.c | 9 |
3 files changed, 27 insertions, 0 deletions
diff --git a/sys/amd64/amd64/fpu.c b/sys/amd64/amd64/fpu.c index b742f50f4195..620356d4d243 100644 --- a/sys/amd64/amd64/fpu.c +++ b/sys/amd64/amd64/fpu.c @@ -38,6 +38,7 @@ #include "opt_cpu.h" #include "opt_debug_npx.h" #include "opt_math_emulate.h" +#include "opt_npx.h" #include <sys/param.h> #include <sys/systm.h> @@ -363,6 +364,14 @@ npx_probe(dev) */ control &= ~(1 << 2); /* enable divide by 0 trap */ fldcw(&control); +#ifdef FPU_ERROR_BROKEN + /* + * FPU error signal doesn't work on some CPU + * accelerator board. + */ + npx_ex16 = 1; + return (0); +#endif npx_traps_while_probing = npx_intrs_while_probing = 0; fp_divide_by_0(); if (npx_traps_while_probing != 0) { diff --git a/sys/amd64/isa/npx.c b/sys/amd64/isa/npx.c index b742f50f4195..620356d4d243 100644 --- a/sys/amd64/isa/npx.c +++ b/sys/amd64/isa/npx.c @@ -38,6 +38,7 @@ #include "opt_cpu.h" #include "opt_debug_npx.h" #include "opt_math_emulate.h" +#include "opt_npx.h" #include <sys/param.h> #include <sys/systm.h> @@ -363,6 +364,14 @@ npx_probe(dev) */ control &= ~(1 << 2); /* enable divide by 0 trap */ fldcw(&control); +#ifdef FPU_ERROR_BROKEN + /* + * FPU error signal doesn't work on some CPU + * accelerator board. + */ + npx_ex16 = 1; + return (0); +#endif npx_traps_while_probing = npx_intrs_while_probing = 0; fp_divide_by_0(); if (npx_traps_while_probing != 0) { diff --git a/sys/i386/isa/npx.c b/sys/i386/isa/npx.c index b742f50f4195..620356d4d243 100644 --- a/sys/i386/isa/npx.c +++ b/sys/i386/isa/npx.c @@ -38,6 +38,7 @@ #include "opt_cpu.h" #include "opt_debug_npx.h" #include "opt_math_emulate.h" +#include "opt_npx.h" #include <sys/param.h> #include <sys/systm.h> @@ -363,6 +364,14 @@ npx_probe(dev) */ control &= ~(1 << 2); /* enable divide by 0 trap */ fldcw(&control); +#ifdef FPU_ERROR_BROKEN + /* + * FPU error signal doesn't work on some CPU + * accelerator board. + */ + npx_ex16 = 1; + return (0); +#endif npx_traps_while_probing = npx_intrs_while_probing = 0; fp_divide_by_0(); if (npx_traps_while_probing != 0) { |