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- Log ----------------------------------------------------------------- commit 70181ee7553a350eedd7acb2815b98dde6ce846c Author: Raymond Toy toy.raymond@gmail.com Date: Sat Nov 29 21:00:38 2014 -0800
Partially addresses ticket:91 by allowing the test suite to finish. The tests still fail (along with others), but the test suite will finish.
* code/float-trap.lisp: * Update SET-FLOATING-POINT-MODES: * When we clear out bits in float-invalid-op-1-byte, clear out the float-invalid-op-2-byte. Not necessary for this fix, but those bits signal other invalid operations from sqrt and such. * When clearing the exceptions, clear the sticky exceptions summary bit too. * Fix SIGFPE-HANDLER: * As above, clear out the bit in float-invalid-op-2-byte and the exceptions summary bit. * Only clear out the new exception bits, as done for SSE2. * Mask out the float-invalid-op-2-byte and the summary bit before setting the new modes.
* compiler/ppc/parms.lisp * Define float-exceptions-summary-byte.
* code/exports.lisp: * Export FLOAT-INVALID-OP-2-BYTE
diff --git a/src/code/exports.lisp b/src/code/exports.lisp index 99e0762..a6dcc0b 100644 --- a/src/code/exports.lisp +++ b/src/code/exports.lisp @@ -1164,6 +1164,7 @@ (:export "SIGCONTEXT-LR" "COMPATIBLE-FUNCTION-TYPES-P" "FLOAT-INVALID-OP-1-BYTE" + "FLOAT-INVALID-OP-2-BYTE" "GET-FP-OPERANDS" "FUSED-MULTIPLY-ADD" "FUSED-MULTIPLY-SUBTRACT") diff --git a/src/code/float-trap.lisp b/src/code/float-trap.lisp index a736e0d..d67a4ff 100644 --- a/src/code/float-trap.lisp +++ b/src/code/float-trap.lisp @@ -193,7 +193,8 @@ #+(and darwin ppc) (when (member :invalid current-exceptions) ;; Clear out the bits for the detected invalid operation - (setf (ldb vm:float-invalid-op-1-byte modes) 0))) + (setf (ldb vm:float-invalid-op-1-byte modes) 0) + (setf (ldb vm:float-invalid-op-2-byte modes) 0)))
(when accrued-x-p (setf (ldb float-sticky-bits modes) @@ -201,12 +202,18 @@ #+(and darwin ppc) (when (member :invalid current-exceptions) ;; Clear out the bits for the detected invalid operation - (setf (ldb vm:float-invalid-op-1-byte modes) 0))) + (setf (ldb vm:float-invalid-op-1-byte modes) 0) + (setf (ldb vm:float-invalid-op-2-byte modes) 0))) + + #+(and darwin ppc) + (when (or accrued-x-p current-x-p) + (setf (ldb vm:float-exceptions-summary-byte modes) 0))
(when fast-mode-p (if fast-mode (setq modes (logior float-fast-bit modes)) (setq modes (logand (lognot float-fast-bit) modes)))) + (setf (floating-point-modes) modes))
(values)) @@ -261,7 +268,12 @@ (traps (logand (ldb float-exceptions-byte modes) (ldb float-traps-byte modes)))) #+(and darwin ppc) - (let ((new-modes modes)) + (let* ((new-modes modes) + (new-exceptions (logandc2 (ldb float-exceptions-byte new-modes) + traps))) + ;; (format t "sigfpe: modes = #B~32,'0b~%" modes) + ;; (format t "sigfpe: new-exc = #B~32,'0b~%" new-exceptions) + (setf (ldb float-exceptions-byte new-modes) new-exceptions) ;; Clear out all exceptions and save them to the context. ;; ;; XXX: Should we just clear out the bits for the traps that are @@ -273,6 +285,9 @@ ;; XXX: Should we only do that if the invalid trap is enabled? (setf (ldb float-invalid-op-1-byte new-modes) 0) (setf (ldb float-invalid-op-2-byte new-modes) 0) + ;; Clear the FP exception summary bit too. + (setf (ldb float-exceptions-summary-byte new-modes) 0) + ;; (format t "sigfpe: new modes = #B~32,'0b~%" new-modes) (setf (floating-point-modes) new-modes) (setf (sigcontext-floating-point-modes (alien:sap-alien scp (* unix:sigcontext))) @@ -371,7 +386,10 @@ ;; an exception. #+ppc (invalid-mask (if (member :invalid traps) - (dpb 0 vm:float-invalid-op-1-byte #xffffffff) + (dpb 0 + (byte 1 31) + (dpb 0 vm::float-invalid-op-2-byte + (dpb 0 vm:float-invalid-op-1-byte #xffffffff))) #xffffffff)) (orig-modes (gensym))) `(let ((,orig-modes (floating-point-modes))) @@ -387,4 +405,4 @@ ,(logand trap-mask exception-mask) #+ppc ,invalid-mask - #+mips ,(dpb 0 float-exceptions-byte #xffffffff)))))))) + #+mips ,(dpb 0 float-exceptions-byte #xffffffff)))))))) diff --git a/src/compiler/ppc/parms.lisp b/src/compiler/ppc/parms.lisp index dab5ce5..cc2c5ba 100644 --- a/src/compiler/ppc/parms.lisp +++ b/src/compiler/ppc/parms.lisp @@ -66,7 +66,8 @@ float-underflow-trap-bit float-overflow-trap-bit float-imprecise-trap-bit float-invalid-trap-bit float-divide-by-zero-trap-bit - float-invalid-op-1-byte)) + float-invalid-op-1-byte + float-invalid-op-2-byte))
#+double-double (export '(double-double-float-digits)) @@ -152,6 +153,10 @@ ;; operation such as some software request, invalid square root, or ;; invalid integer convert. (defconstant float-invalid-op-2-byte (byte 3 8)) +;; FP exception summary bit. This is set if an FP instruction causes +;; any of the FP exception bits to transition from 0 to 1 (meaning +;; that exception occurred.) +(defconstant float-exceptions-summary-byte (byte 1 31)) (defconstant float-fast-bit (ash 1 2)) ; Non-IEEE mode
); eval-when
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Summary of changes: src/code/exports.lisp | 1 + src/code/float-trap.lisp | 28 +++++++++++++++++++++++----- src/compiler/ppc/parms.lisp | 7 ++++++- 3 files changed, 30 insertions(+), 6 deletions(-)
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Raymond Toy