diff options
Diffstat (limited to 'sysdeps/arm')
| -rw-r--r-- | sysdeps/arm/fclrexcpt.c | 27 | ||||
| -rw-r--r-- | sysdeps/arm/fedisblxcpt.c | 24 | ||||
| -rw-r--r-- | sysdeps/arm/feenablxcpt.c | 42 | ||||
| -rw-r--r-- | sysdeps/arm/fegetenv.c | 21 | ||||
| -rw-r--r-- | sysdeps/arm/fegetexcept.c | 14 | ||||
| -rw-r--r-- | sysdeps/arm/fegetround.c | 17 | ||||
| -rw-r--r-- | sysdeps/arm/feholdexcpt.c | 28 | ||||
| -rw-r--r-- | sysdeps/arm/fesetenv.c | 56 | ||||
| -rw-r--r-- | sysdeps/arm/fesetround.c | 39 | ||||
| -rw-r--r-- | sysdeps/arm/feupdateenv.c | 25 | ||||
| -rw-r--r-- | sysdeps/arm/fgetexcptflg.c | 19 | ||||
| -rw-r--r-- | sysdeps/arm/fraiseexcpt.c | 10 | ||||
| -rw-r--r-- | sysdeps/arm/fsetexcptflg.c | 27 | ||||
| -rw-r--r-- | sysdeps/arm/ftestexcept.c | 16 | ||||
| -rw-r--r-- | sysdeps/arm/get-rounding-mode.h | 16 | ||||
| -rw-r--r-- | sysdeps/arm/setfpucw.c | 23 |
16 files changed, 171 insertions, 233 deletions
diff --git a/sysdeps/arm/fclrexcpt.c b/sysdeps/arm/fclrexcpt.c index 72eaab98de..cbf61a6f4a 100644 --- a/sysdeps/arm/fclrexcpt.c +++ b/sysdeps/arm/fclrexcpt.c @@ -24,27 +24,20 @@ int feclearexcept (int excepts) { - if (ARM_HAVE_VFP) - { - unsigned long int temp; + fpu_control_t fpscr; - /* Mask out unsupported bits/exceptions. */ - excepts &= FE_ALL_EXCEPT; + /* Fail if a VFP unit isn't present unless nothing needs to be done. */ + if (!ARM_HAVE_VFP) + return (excepts != 0); - /* Get the current floating point status. */ - _FPU_GETCW (temp); + _FPU_GETCW (fpscr); + excepts &= FE_ALL_EXCEPT; - /* Clear the relevant bits. */ - temp = (temp & ~FE_ALL_EXCEPT) | (temp & FE_ALL_EXCEPT & ~excepts); + /* Clear the relevant bits. */ + fpscr = (fpscr & ~FE_ALL_EXCEPT) | (fpscr & FE_ALL_EXCEPT & ~excepts); - /* Put the new data in effect. */ - _FPU_SETCW (temp); + _FPU_SETCW (fpscr); - /* Success. */ - return 0; - } - - /* Unsupported, so fail unless nothing needs to be done. */ - return (excepts != 0); + return 0; } libm_hidden_def (feclearexcept) diff --git a/sysdeps/arm/fedisblxcpt.c b/sysdeps/arm/fedisblxcpt.c index 88da539439..f2956cd32a 100644 --- a/sysdeps/arm/fedisblxcpt.c +++ b/sysdeps/arm/fedisblxcpt.c @@ -25,23 +25,17 @@ int fedisableexcept (int excepts) { - if (ARM_HAVE_VFP) - { - unsigned long int new_exc, old_exc; + fpu_control_t fpscr, new_fpscr; - _FPU_GETCW(new_exc); + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return -1; - old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; + _FPU_GETCW (fpscr); + excepts &= FE_ALL_EXCEPT; + new_fpscr = fpscr & ~(excepts << FE_EXCEPT_SHIFT); - excepts &= FE_ALL_EXCEPT; + _FPU_SETCW (new_fpscr); - new_exc &= ~(excepts << FE_EXCEPT_SHIFT); - - _FPU_SETCW(new_exc); - - return old_exc; - } - - /* Unsupported, so return -1 for failure. */ - return -1; + return (fpscr >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; } diff --git a/sysdeps/arm/feenablxcpt.c b/sysdeps/arm/feenablxcpt.c index b286ec5565..afd8943638 100644 --- a/sysdeps/arm/feenablxcpt.c +++ b/sysdeps/arm/feenablxcpt.c @@ -25,35 +25,27 @@ int feenableexcept (int excepts) { - if (ARM_HAVE_VFP) - { - unsigned long int new_exc, old_exc; - - _FPU_GETCW(new_exc); - - old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; + fpu_control_t fpscr, new_fpscr; - excepts &= FE_ALL_EXCEPT; + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return -1; - new_exc |= (excepts << FE_EXCEPT_SHIFT); + _FPU_GETCW (fpscr); + excepts &= FE_ALL_EXCEPT; + new_fpscr = fpscr | (excepts << FE_EXCEPT_SHIFT); - _FPU_SETCW(new_exc); + _FPU_SETCW (new_fpscr); - if (excepts != 0) - { - /* VFPv3 and VFPv4 do not support trapping exceptions, so - test whether the relevant bits were set and fail if - not. */ - unsigned int temp; - _FPU_GETCW (temp); - if ((temp & (excepts << FE_EXCEPT_SHIFT)) - != (excepts << FE_EXCEPT_SHIFT)) - return -1; - } - - return old_exc; + if (excepts != 0) + { + /* Not all VFP architectures support trapping exceptions, so + test whether the relevant bits were set and fail if not. */ + _FPU_GETCW (new_fpscr); + if ((new_fpscr & (excepts << FE_EXCEPT_SHIFT)) + != (excepts << FE_EXCEPT_SHIFT)) + return -1; } - /* Unsupported, so return -1 for failure. */ - return -1; + return (fpscr >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; } diff --git a/sysdeps/arm/fegetenv.c b/sysdeps/arm/fegetenv.c index a45c1af3cf..f390c0fdf7 100644 --- a/sysdeps/arm/fegetenv.c +++ b/sysdeps/arm/fegetenv.c @@ -24,17 +24,14 @@ int fegetenv (fenv_t *envp) { - if (ARM_HAVE_VFP) - { - unsigned long int temp; - _FPU_GETCW (temp); - envp->__cw = temp; - - /* Success. */ - return 0; - } - - /* Unsupported, so fail. */ - return 1; + fpu_control_t fpscr; + + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 1; + + _FPU_GETCW (fpscr); + envp->__cw = fpscr; + return 0; } libm_hidden_def (fegetenv) diff --git a/sysdeps/arm/fegetexcept.c b/sysdeps/arm/fegetexcept.c index 5974c63336..aa244d0928 100644 --- a/sysdeps/arm/fegetexcept.c +++ b/sysdeps/arm/fegetexcept.c @@ -25,15 +25,13 @@ int fegetexcept (void) { - if (ARM_HAVE_VFP) - { - unsigned long temp; + fpu_control_t fpscr; - _FPU_GETCW (temp); + /* Return with all exceptions disabled if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 0; - return (temp >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; - } + _FPU_GETCW (fpscr); - /* Unsupported. Return all exceptions disabled. */ - return 0; + return (fpscr >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT; } diff --git a/sysdeps/arm/fegetround.c b/sysdeps/arm/fegetround.c index cb4cf1bce2..1c9c151a16 100644 --- a/sysdeps/arm/fegetround.c +++ b/sysdeps/arm/fegetround.c @@ -24,17 +24,14 @@ int fegetround (void) { - if (ARM_HAVE_VFP) - { - unsigned int temp; + fpu_control_t fpscr; - /* Get the current environment. */ - _FPU_GETCW (temp); + /* FE_TONEAREST is the only supported rounding mode + if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return FE_TONEAREST; - return temp & FE_TOWARDZERO; - } - - /* The current soft-float implementation only handles TONEAREST. */ - return FE_TONEAREST; + _FPU_GETCW (fpscr); + return fpscr & FE_TOWARDZERO; } libm_hidden_def (fegetround) diff --git a/sysdeps/arm/feholdexcpt.c b/sysdeps/arm/feholdexcpt.c index 9ca673c6fb..258ba6637f 100644 --- a/sysdeps/arm/feholdexcpt.c +++ b/sysdeps/arm/feholdexcpt.c @@ -24,27 +24,23 @@ int feholdexcept (fenv_t *envp) { - if (ARM_HAVE_VFP) - { - unsigned long int temp; + fpu_control_t fpscr; - /* Store the environment. */ - _FPU_GETCW(temp); - envp->__cw = temp; + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 1; - /* Now set all exceptions to non-stop. */ - temp &= ~(FE_ALL_EXCEPT << FE_EXCEPT_SHIFT); + _FPU_GETCW (fpscr); + envp->__cw = fpscr; - /* And clear all exception flags. */ - temp &= ~FE_ALL_EXCEPT; + /* Now set all exceptions to non-stop. */ + fpscr &= ~(FE_ALL_EXCEPT << FE_EXCEPT_SHIFT); - _FPU_SETCW(temp); + /* And clear all exception flags. */ + fpscr &= ~FE_ALL_EXCEPT; - return 0; - } - - /* Unsupported, so fail. */ - return 1; + _FPU_SETCW (fpscr); + return 0; } libm_hidden_def (feholdexcept) diff --git a/sysdeps/arm/fesetenv.c b/sysdeps/arm/fesetenv.c index dabb88bb67..62031d596d 100644 --- a/sysdeps/arm/fesetenv.c +++ b/sysdeps/arm/fesetenv.c @@ -24,38 +24,36 @@ int fesetenv (const fenv_t *envp) { - if (ARM_HAVE_VFP) + fpu_control_t fpscr; + + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 1; + + _FPU_GETCW (fpscr); + + /* Preserve the reserved FPSCR flags. */ + fpscr &= _FPU_RESERVED; + + if (envp == FE_DFL_ENV) + fpscr |= _FPU_DEFAULT; + else if (envp == FE_NOMASK_ENV) + fpscr |= _FPU_IEEE; + else + fpscr |= envp->__cw & ~_FPU_RESERVED; + + _FPU_SETCW (fpscr); + + if (envp == FE_NOMASK_ENV) { - unsigned int temp; - - _FPU_GETCW (temp); - temp &= _FPU_RESERVED; - - if (envp == FE_DFL_ENV) - temp |= _FPU_DEFAULT; - else if (envp == FE_NOMASK_ENV) - temp |= _FPU_IEEE; - else - temp |= envp->__cw & ~_FPU_RESERVED; - - _FPU_SETCW (temp); - - if (envp == FE_NOMASK_ENV) - { - /* VFPv3 and VFPv4 do not support trapping exceptions, so - test whether the relevant bits were set and fail if - not. */ - _FPU_GETCW (temp); - if ((temp & _FPU_IEEE) != _FPU_IEEE) - return 1; - } - - /* Success. */ - return 0; + /* Not all VFP architectures support trapping exceptions, so + test whether the relevant bits were set and fail if not. */ + _FPU_GETCW (fpscr); + if ((fpscr & _FPU_IEEE) != _FPU_IEEE) + return 1; } - /* Unsupported, so fail. */ - return 1; + return 0; } libm_hidden_def (fesetenv) diff --git a/sysdeps/arm/fesetround.c b/sysdeps/arm/fesetround.c index 6f533d1992..d1b92dc255 100644 --- a/sysdeps/arm/fesetround.c +++ b/sysdeps/arm/fesetround.c @@ -24,30 +24,21 @@ int fesetround (int round) { - if (ARM_HAVE_VFP) - { - fpu_control_t temp; - - switch (round) - { - case FE_TONEAREST: - case FE_UPWARD: - case FE_DOWNWARD: - case FE_TOWARDZERO: - _FPU_GETCW (temp); - temp = (temp & ~FE_TOWARDZERO) | round; - _FPU_SETCW (temp); - return 0; - default: - return 1; - } - } - else if (round == FE_TONEAREST) - /* This is the only supported rounding mode for soft-fp. */ - return 0; - - /* Unsupported, so fail. */ - return 1; + fpu_control_t fpscr; + + /* FE_TONEAREST is the only supported rounding mode + if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return (round == FE_TONEAREST) ? 0 : 1; + + /* Fail if the rounding mode is not valid. */ + if (round & ~FE_TOWARDZERO) + return 1; + + _FPU_GETCW (fpscr); + fpscr = (fpscr & ~FE_TOWARDZERO) | round; + _FPU_SETCW (fpscr); + return 0; } libm_hidden_def (fesetround) diff --git a/sysdeps/arm/feupdateenv.c b/sysdeps/arm/feupdateenv.c index f5deb60ade..55a15025c6 100644 --- a/sysdeps/arm/feupdateenv.c +++ b/sysdeps/arm/feupdateenv.c @@ -25,24 +25,19 @@ int feupdateenv (const fenv_t *envp) { - if (ARM_HAVE_VFP) - { - unsigned int temp; + fpu_control_t fpscr; - /* Get the current exception state. */ - _FPU_GETCW (temp); + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 1; - /* Install new environment. */ - fesetenv (envp); + _FPU_GETCW (fpscr); - /* Raise the saved exceptions. */ - feraiseexcept (temp & FE_ALL_EXCEPT); + /* Install new environment. */ + fesetenv (envp); - /* Success. */ - return 0; - } - - /* Unsupported, so fail. */ - return 1; + /* Raise the saved exceptions. */ + feraiseexcept (fpscr & FE_ALL_EXCEPT); + return 0; } libm_hidden_def (feupdateenv) diff --git a/sysdeps/arm/fgetexcptflg.c b/sysdeps/arm/fgetexcptflg.c index beb43be748..63fdfbf747 100644 --- a/sysdeps/arm/fgetexcptflg.c +++ b/sysdeps/arm/fgetexcptflg.c @@ -25,19 +25,14 @@ int fegetexceptflag (fexcept_t *flagp, int excepts) { - if (ARM_HAVE_VFP) - { - unsigned long temp; + fpu_control_t fpscr; - /* Get the current exceptions. */ - _FPU_GETCW (temp); + /* Fail if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 1; - *flagp = temp & excepts & FE_ALL_EXCEPT; + _FPU_GETCW (fpscr); - /* Success. */ - return 0; - } - - /* Unsupported, so fail. */ - return 1; + *flagp = fpscr & excepts & FE_ALL_EXCEPT; + return 0; } diff --git a/sysdeps/arm/fraiseexcpt.c b/sysdeps/arm/fraiseexcpt.c index 8b320651eb..a964cb01d4 100644 --- a/sysdeps/arm/fraiseexcpt.c +++ b/sysdeps/arm/fraiseexcpt.c @@ -25,9 +25,12 @@ int feraiseexcept (int excepts) { - if (ARM_HAVE_VFP) + /* Fail if a VFP unit isn't present unless nothing needs to be done. */ + if (!ARM_HAVE_VFP) + return (excepts != 0); + else { - int fpscr; + fpu_control_t fpscr; const float fp_zero = 0.0, fp_one = 1.0, fp_max = FLT_MAX, fp_min = FLT_MIN, fp_1e32 = 1.0e32f, fp_two = 2.0, fp_three = 3.0; @@ -98,9 +101,6 @@ feraiseexcept (int excepts) /* Success. */ return 0; } - - /* Unsupported, so fail unless nothing needs to be done. */ - return (excepts != 0); } libm_hidden_def (feraiseexcept) diff --git a/sysdeps/arm/fsetexcptflg.c b/sysdeps/arm/fsetexcptflg.c index 7e3d007e96..1a610ff912 100644 --- a/sysdeps/arm/fsetexcptflg.c +++ b/sysdeps/arm/fsetexcptflg.c @@ -25,24 +25,19 @@ int fesetexceptflag (const fexcept_t *flagp, int excepts) { - if (ARM_HAVE_VFP) - { - fexcept_t temp; + fpu_control_t fpscr; - /* Get the current environment. */ - _FPU_GETCW (temp); + /* Fail if a VFP unit isn't present unless nothing needs to be done. */ + if (!ARM_HAVE_VFP) + return (excepts != 0); - /* Set the desired exception mask. */ - temp &= ~(excepts & FE_ALL_EXCEPT); - temp |= (*flagp & excepts & FE_ALL_EXCEPT); + _FPU_GETCW (fpscr); - /* Save state back to the FPU. */ - _FPU_SETCW (temp); + /* Set the desired exception mask. */ + fpscr &= ~(excepts & FE_ALL_EXCEPT); + fpscr |= (*flagp & excepts & FE_ALL_EXCEPT); - /* Success. */ - return 0; - } - - /* Unsupported, so fail unless nothing needs to be done. */ - return (excepts != 0); + /* Save state back to the FPU. */ + _FPU_SETCW (fpscr); + return 0; } diff --git a/sysdeps/arm/ftestexcept.c b/sysdeps/arm/ftestexcept.c index 9295c0fec2..de082b281a 100644 --- a/sysdeps/arm/ftestexcept.c +++ b/sysdeps/arm/ftestexcept.c @@ -24,17 +24,15 @@ int fetestexcept (int excepts) { - if (ARM_HAVE_VFP) - { - fexcept_t temp; + fpu_control_t fpscr; - /* Get current exceptions. */ - _FPU_GETCW(temp); + /* Return no exception flags if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return 0; - return temp & excepts & FE_ALL_EXCEPT; - } + /* Get current exceptions. */ + _FPU_GETCW (fpscr); - /* Unsupported, return 0. */ - return 0; + return fpscr & excepts & FE_ALL_EXCEPT; } libm_hidden_def (fetestexcept) diff --git a/sysdeps/arm/get-rounding-mode.h b/sysdeps/arm/get-rounding-mode.h index 7d6054cd89..a1ecf51a46 100644 --- a/sysdeps/arm/get-rounding-mode.h +++ b/sysdeps/arm/get-rounding-mode.h @@ -28,15 +28,15 @@ static inline int get_rounding_mode (void) { - if (ARM_HAVE_VFP) - { - fpu_control_t fc; - - _FPU_GETCW (fc); - return fc & FE_TOWARDZERO; - } - else + fpu_control_t fpscr; + + /* FE_TONEAREST is the only supported rounding mode + if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) return FE_TONEAREST; + + _FPU_GETCW (fpscr); + return fpscr & FE_TOWARDZERO; } #endif /* get-rounding-mode.h */ diff --git a/sysdeps/arm/setfpucw.c b/sysdeps/arm/setfpucw.c index 92333eb364..7416377f9e 100644 --- a/sysdeps/arm/setfpucw.c +++ b/sysdeps/arm/setfpucw.c @@ -24,20 +24,19 @@ void __setfpucw (fpu_control_t set) { - if (ARM_HAVE_VFP) - { - fpu_control_t cw; + fpu_control_t fpscr; - /* Fetch the current control word. */ - _FPU_GETCW (cw); + /* Do nothing if a VFP unit isn't present. */ + if (!ARM_HAVE_VFP) + return; - /* Preserve the reserved bits, and set the rest as the user - specified (or the default, if the user gave zero). */ - cw &= _FPU_RESERVED; - cw |= set & ~_FPU_RESERVED; + /* Fetch the current control word. */ + _FPU_GETCW (fpscr); - _FPU_SETCW (cw); - } + /* Preserve the reserved bits, and set the rest as the user + specified (or the default, if the user gave zero). */ + fpscr &= _FPU_RESERVED; + fpscr |= set & ~_FPU_RESERVED; - /* Do nothing if a VFP unit isn't present. */ + _FPU_SETCW (fpscr); } |