diff options
| -rw-r--r-- | ChangeLog | 21 | ||||
| -rw-r--r-- | sysdeps/sparc/fpu/fenv_private.h | 64 |
2 files changed, 85 insertions, 0 deletions
@@ -1,5 +1,26 @@ 2014-04-30 David S. Miller <davem@davemloft.net> + * sysdeps/sparc/fpu/fenv_private.h (HAVE_RM_CTX): Define. + (libc_feholdexcept_setround_sparc_ctx): New function. + (libc_fesetenv_sparc_ctx): Likewise. + (libc_feupdateenv_sparc_ctx): Likewise. + (libc_feholdsetround_sparc_ctx): Likewise. + (libc_feholdexcept_setround_ctx): Define. + (libc_feholdexcept_setroundf_ctx): Likewise. + (libc_feholdexcept_setroundl_ctx): Likewise. + (libc_fesetenv_ctx): Likewise. + (libc_fesetenvf_ctx): Likewise. + (libc_fesetenvl_ctx): Likewise. + (libc_feupdateenv_ctx): Likewise. + (libc_feupdateenvf_ctx): Likewise. + (libc_feupdateenvl_ctx): Likewise. + (libc_feresetround_ctx): Likewise. + (libc_feresetroundf_ctx): Likewise. + (libc_feresetroundl_ctx): Likewise. + (libc_feholdsetround_ctx): Likewise. + (libc_feholdsetroundf_ctx): Likewise. + (libc_feholdsetroundl_ctx): Likewise. + * sysdeps/unix/sysv/linux/sparc/bits/siginfo.h (EMT_TAGOVF): Protect with __USE_GNU instead of XOPEN cpp guards. diff --git a/sysdeps/sparc/fpu/fenv_private.h b/sysdeps/sparc/fpu/fenv_private.h index 8690879ddc..29b5d123cf 100644 --- a/sysdeps/sparc/fpu/fenv_private.h +++ b/sysdeps/sparc/fpu/fenv_private.h @@ -115,4 +115,68 @@ libc_feresetround (fenv_t *e) #define libc_feholdsetroundl libc_feholdsetround #define libc_feresetroundl libc_feresetround +/* We have support for rounding mode context. */ +#define HAVE_RM_CTX 1 + +static __always_inline void +libc_feholdexcept_setround_sparc_ctx (struct rm_ctx *ctx, int round) +{ + fenv_t new; + + __fenv_stfsr(ctx->env); + new = ctx->env & ~((0x1f << 23) | FE_ALL_EXCEPT); + new = (new & ~__FE_ROUND_MASK) | round; + if (__glibc_unlikely (new != ctx->env)) + { + __fenv_ldfsr(new); + ctx->updated_status = true; + } + else + ctx->updated_status = false; +} + +static __always_inline void +libc_fesetenv_sparc_ctx (struct rm_ctx *ctx) +{ + libc_fesetenv(&ctx->env); +} + +static __always_inline void +libc_feupdateenv_sparc_ctx (struct rm_ctx *ctx) +{ + if (__glibc_unlikely (ctx->updated_status)) + libc_feupdateenv_test (&ctx->env, 0); +} + +static __always_inline void +libc_feholdsetround_sparc_ctx (struct rm_ctx *ctx, int round) +{ + fenv_t new; + + __fenv_stfsr(ctx->env); + new = (ctx->env & ~__FE_ROUND_MASK) | round; + if (__glibc_unlikely (new != ctx->env)) + { + __fenv_ldfsr(new); + ctx->updated_status = true; + } + else + ctx->updated_status = false; +} +#define libc_feholdexcept_setround_ctx libc_feholdexcept_setround_sparc_ctx +#define libc_feholdexcept_setroundf_ctx libc_feholdexcept_setround_sparc_ctx +#define libc_feholdexcept_setroundl_ctx libc_feholdexcept_setround_sparc_ctx +#define libc_fesetenv_ctx libc_fesetenv_sparc_ctx +#define libc_fesetenvf_ctx libc_fesetenv_sparc_ctx +#define libc_fesetenvl_ctx libc_fesetenv_sparc_ctx +#define libc_feupdateenv_ctx libc_feupdateenv_sparc_ctx +#define libc_feupdateenvf_ctx libc_feupdateenv_sparc_ctx +#define libc_feupdateenvl_ctx libc_feupdateenv_sparc_ctx +#define libc_feresetround_ctx libc_feupdateenv_sparc_ctx +#define libc_feresetroundf_ctx libc_feupdateenv_sparc_ctx +#define libc_feresetroundl_ctx libc_feupdateenv_sparc_ctx +#define libc_feholdsetround_ctx libc_feholdsetround_sparc_ctx +#define libc_feholdsetroundf_ctx libc_feholdsetround_sparc_ctx +#define libc_feholdsetroundl_ctx libc_feholdsetround_sparc_ctx + #endif /* FENV_PRIVATE_H */ |