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target/alpha: Fix user-only floating-point exceptions

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Record the software fp control register, as set by the
osf_setsysinfo syscall.  Add those masked exceptions
to fpcr_exc_enable.  Do not raise a signal for masked
fp exceptions.

Fixes: https://bugs.launchpad.net/bugs/1701835
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-04-26 15:20:51 -07:00
parent 4a24793290
commit 21ba856499
5 changed files with 130 additions and 60 deletions
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3
linux-user/syscall_defs.h
View file

@ -635,7 +635,8 @@ typedef struct target_siginfo {
#define TARGET_FPE_FLTRES (6) /* floating point inexact result */
#define TARGET_FPE_FLTINV (7) /* floating point invalid operation */
#define TARGET_FPE_FLTSUB (8) /* subscript out of range */
#define TARGET_NSIGFPE 8
#define TARGET_FPE_FLTUNK (14) /* undiagnosed fp exception */
#define TARGET_NSIGFPE 15
/*
* SIGSEGV si_codes