commit ed3d72f58fccac85e48d05e53548d8da5caba11e Author: Aurelien Jarno Date: Thu Jun 30 21:18:34 2016 +0200 SPARC: fix nearbyint on sNaN input nearbyint and nearbyintf should not trigger inexact exceptions, but should still trigger an invalid exception for a sNaN input. The SPARC specific implementations of these functions save FSR at the beginning of the function and restore it at the end to not trigger exception. This however doesn't work for an sNaN input. Fix that by adding a fcmp instruction using the input value before saving FSR, so that an invalid exception is triggered for a sNaN input. This fixes the math/test-nearbyint-except test on SPARC. Changelog: * sparc/sparc32/sparcv9/fpu/s_nearbyint.S (__nearbyint): Trigger an invalid exception for sNaN. * sparc/sparc32/sparcv9/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S (__nearbyint_vis3): Likewise * sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S (__nearbyintf_vis3): Likewise * sparc/sparc64/fpu/s_nearbyint.S (__nearbyint): Likewise. * sparc/sparc64/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sparc/sparc64/fpu/multiarch/s_nearbyint-vis3.S (__nearbyint_vis3): Likewise. * sparc/sparc64/fpu/multiarch/s_nearbyintf-vis3.S (__nearbyintf_vis3): Likewise diff --git a/ChangeLog b/ChangeLog index 497bfe5..170c549 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,21 @@ 2016-06-30 Aurelien Jarno + * sparc/sparc32/sparcv9/fpu/s_nearbyint.S (__nearbyint): Trigger an + invalid exception for sNaN. + * sparc/sparc32/sparcv9/fpu/s_nearbyintf.S (__nearbyintf): Likewise. + * sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S + (__nearbyint_vis3): Likewise + * sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S + (__nearbyintf_vis3): Likewise + * sparc/sparc64/fpu/s_nearbyint.S (__nearbyint): Likewise. + * sparc/sparc64/fpu/s_nearbyintf.S (__nearbyintf): Likewise. + * sparc/sparc64/fpu/multiarch/s_nearbyint-vis3.S (__nearbyint_vis3): + Likewise. + * sparc/sparc64/fpu/multiarch/s_nearbyintf-vis3.S (__nearbyintf_vis3): + Likewise + +2016-06-30 Aurelien Jarno + * sysdeps/unix/sysv/linux/sparc/sparc64/localplt.data: Add _Qp_cmp. 2016-06-30 Andreas Schwab diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S index 4475e8c..d9ff0cc 100644 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S @@ -36,6 +36,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyint_vis3) + fcmpd %fcc3, %f0, %f0 /* Check for sNaN */ st %fsr, [%sp + 88] sethi %hi(TWO_FIFTYTWO), %o2 sethi %hi(0xf8003e0), %o5 diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S index e39134b..5cd1eb0 100644 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S @@ -35,6 +35,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyintf_vis3) + fcmps %fcc3, %f1, %f1 /* Check for sNaN */ st %fsr, [%sp + 88] movwtos %o0, %f1 sethi %hi(TWO_TWENTYTHREE), %o2 diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S index 29b56b4..84a1097 100644 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S @@ -36,6 +36,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyint) + fcmpd %fcc3, %f0, %f0 /* Check for sNaN */ st %fsr, [%sp + 88] sethi %hi(TWO_FIFTYTWO), %o2 sethi %hi(0xf8003e0), %o5 diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S index e2188b2..d5cf5ce 100644 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S @@ -35,6 +35,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyintf) + fcmps %fcc3, %f1, %f1 /* Check for sNaN */ st %fsr, [%sp + 88] st %o0, [%sp + 68] sethi %hi(TWO_TWENTYTHREE), %o2 diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyint-vis3.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyint-vis3.S index fff277a..3180554 100644 --- a/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyint-vis3.S +++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyint-vis3.S @@ -35,6 +35,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyint_vis3) + fcmpd %fcc3, %f0, %f0 /* Check for sNaN */ stx %fsr, [%sp + STACK_BIAS + 144] sethi %hi(TWO_FIFTYTWO), %o2 sllx %o2, 32, %o2 diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyintf-vis3.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyintf-vis3.S index c6e94ba..7bf7eed 100644 --- a/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyintf-vis3.S +++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyintf-vis3.S @@ -35,6 +35,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyintf_vis3) + fcmps %fcc3, %f1, %f1 /* Check for sNaN */ stx %fsr, [%sp + STACK_BIAS + 144] sethi %hi(0xf8003e0), %o5 sethi %hi(TWO_TWENTYTHREE), %o2 diff --git a/sysdeps/sparc/sparc64/fpu/s_nearbyint.S b/sysdeps/sparc/sparc64/fpu/s_nearbyint.S index caf4d72..456c315 100644 --- a/sysdeps/sparc/sparc64/fpu/s_nearbyint.S +++ b/sysdeps/sparc/sparc64/fpu/s_nearbyint.S @@ -35,6 +35,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyint) + fcmpd %fcc3, %f0, %f0 /* Check for sNaN */ stx %fsr, [%sp + STACK_BIAS + 144] sethi %hi(TWO_FIFTYTWO), %o2 sllx %o2, 32, %o2 diff --git a/sysdeps/sparc/sparc64/fpu/s_nearbyintf.S b/sysdeps/sparc/sparc64/fpu/s_nearbyintf.S index 4232eca..d0d9bed 100644 --- a/sysdeps/sparc/sparc64/fpu/s_nearbyintf.S +++ b/sysdeps/sparc/sparc64/fpu/s_nearbyintf.S @@ -35,6 +35,7 @@ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyintf) + fcmps %fcc3, %f1, %f1 /* Check for sNaN */ stx %fsr, [%sp + STACK_BIAS + 144] sethi %hi(0xf8003e0), %o5 sethi %hi(TWO_TWENTYTHREE), %o2