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| author | David S. Miller <davem@davemloft.net> | 2014-04-30 15:14:58 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-04-30 15:14:58 -0700 |
| commit | 4fa262fa9e8836f2e513e3ea56797dab2d75e6de (patch) | |
| tree | 7eaf4b5e6df7f2642202ed7253075d5418a52d6e /sysdeps | |
| parent | 1d3d93ef73c7712a7b903140e524f081d349865b (diff) | |
| download | glibc-4fa262fa9e8836f2e513e3ea56797dab2d75e6de.tar glibc-4fa262fa9e8836f2e513e3ea56797dab2d75e6de.tar.gz glibc-4fa262fa9e8836f2e513e3ea56797dab2d75e6de.tar.bz2 glibc-4fa262fa9e8836f2e513e3ea56797dab2d75e6de.zip | |
Add round-mode context support to sparc.
* 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.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/sparc/fpu/fenv_private.h | 64 |
1 files changed, 64 insertions, 0 deletions
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 */ |