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ff6b24501f
On some architectures, the parts of math_private.h relating to the floating-point environment are in a separate file fenv_private.h included from math_private.h. As this is purely an architecture-specific convention used by several architectures, however, all such architectures still need their own math_private.h, even if it has nothing to do beyond #include <fenv_private.h> and peculiarity of including the i386 file directly instead of having a shared file in sysdeps/x86. This patch makes the fenv_private.h name an architecture-independent convention in glibc. The include of fenv_private.h from math_private.h becomes architecture-independent (until callers are updated to include fenv_private.h directly so the include from math_private.h is no longer needed). Some architecture math_private.h headers are removed if no longer needed, or renamed to fenv_private.h if all they define belongs in that header; architecture fenv_private.h headers now do require #include_next <fenv_private.h>. The i386 fenv_private.h file moves to sysdeps/x86/fpu/ to reflect how it is actually shared with x86_64. The generic math_private.h gets a new include of <stdbool.h>, as needed for bool in some prototypes in that header (previously that was indirectly included via include/fenv.h, which now only gets included too late in math_private.h, after those prototypes). Tested for x86_64 and x86, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/aarch64/fpu/fenv_private.h: New file. Based on .... * sysdeps/aarch64/fpu/math_private.h: ... this file. All contents moved to fenv_private.h except for ... (TOINT_INTRINSICS): Kept in math_private.h. (roundtoint): Likewise. (converttoint): Likewise. * sysdeps/arm/fenv_private.h: Change multiple-include guard to [ARM_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/arm/math_private.h: Remove. * sysdeps/generic/fenv_private.h: New file. Contents moved from .... * sysdeps/generic/math_private.h: ... this file. Include <stdbool.h>. Do not include <fenv.h> or <get-rounding-mode.h>. Include <fenv_private.h>. Remove functions and macros moved to fenv_private.h. * sysdeps/i386/fpu/math_private.h: Remove. * sysdeps/mips/math_private.h: Move to .... * sysdeps/mips/fpu/fenv_private.h: ... here. Change multiple-include guard to [MIPS_FENV_PRIVATE_H]. Remove [__mips_hard_float] conditional. Include next <fenv_private.h>. * sysdeps/powerpc/fpu/fenv_private.h: Change multiple-include guard to [POWERPC_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/powerpc/fpu/math_private.h: Do not include <fenv_private.h>. * sysdeps/riscv/rvf/math_private.h: Move to .... * sysdeps/riscv/rvf/fenv_private.h: ... here. Change multiple-include guard to [RISCV_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/sparc/fpu/fenv_private.h: Change multiple-include guard to [SPARC_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/sparc/fpu/math_private.h: Remove. * sysdeps/i386/fpu/fenv_private.h: Move to .... * sysdeps/x86/fpu/fenv_private.h: ... here. Change multiple-include guard to [X86_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/x86_64/fpu/math_private.h: Do not include <sysdeps/i386/fpu/fenv_private.h>.
185 lines
4.9 KiB
C
185 lines
4.9 KiB
C
#ifndef SPARC_FENV_PRIVATE_H
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#define SPARC_FENV_PRIVATE_H 1
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#include <fenv.h>
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static __always_inline void
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libc_feholdexcept (fenv_t *e)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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*(e) = etmp;
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etmp = etmp & ~((0x1f << 23) | FE_ALL_EXCEPT);
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__fenv_ldfsr(etmp);
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}
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static __always_inline void
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libc_fesetround (int r)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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etmp = (etmp & ~__FE_ROUND_MASK) | (r);
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__fenv_ldfsr(etmp);
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}
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static __always_inline void
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libc_feholdexcept_setround (fenv_t *e, int r)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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*(e) = etmp;
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etmp = etmp & ~((0x1f << 23) | FE_ALL_EXCEPT);
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etmp = (etmp & ~__FE_ROUND_MASK) | (r);
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__fenv_ldfsr(etmp);
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}
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static __always_inline int
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libc_fetestexcept (int e)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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return etmp & (e) & FE_ALL_EXCEPT;
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}
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static __always_inline void
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libc_fesetenv (fenv_t *e)
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{
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__fenv_ldfsr(*e);
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}
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static __always_inline int
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libc_feupdateenv_test (fenv_t *e, int ex)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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etmp &= FE_ALL_EXCEPT;
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__fenv_ldfsr(*e);
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__feraiseexcept (etmp);
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return etmp & ex;
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}
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static __always_inline void
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libc_feupdateenv (fenv_t *e)
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{
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libc_feupdateenv_test (e, 0);
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}
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static __always_inline void
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libc_feholdsetround (fenv_t *e, int r)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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*(e) = etmp;
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etmp = (etmp & ~__FE_ROUND_MASK) | (r);
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__fenv_ldfsr(etmp);
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}
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static __always_inline void
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libc_feresetround (fenv_t *e)
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{
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fenv_t etmp;
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__fenv_stfsr(etmp);
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etmp = (etmp & ~__FE_ROUND_MASK) | (*e & __FE_ROUND_MASK);
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__fenv_ldfsr(etmp);
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}
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#define libc_feholdexceptf libc_feholdexcept
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#define libc_fesetroundf libc_fesetround
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#define libc_feholdexcept_setroundf libc_feholdexcept_setround
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#define libc_fetestexceptf libc_fetestexcept
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#define libc_fesetenvf libc_fesetenv
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#define libc_feupdateenv_testf libc_feupdateenv_test
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#define libc_feupdateenvf libc_feupdateenv
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#define libc_feholdsetroundf libc_feholdsetround
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#define libc_feresetroundf libc_feresetround
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#define libc_feholdexcept libc_feholdexcept
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#define libc_fesetround libc_fesetround
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#define libc_feholdexcept_setround libc_feholdexcept_setround
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#define libc_fetestexcept libc_fetestexcept
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#define libc_fesetenv libc_fesetenv
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#define libc_feupdateenv_test libc_feupdateenv_test
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#define libc_feupdateenv libc_feupdateenv
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#define libc_feholdsetround libc_feholdsetround
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#define libc_feresetround libc_feresetround
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#define libc_feholdexceptl libc_feholdexcept
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#define libc_fesetroundl libc_fesetround
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#define libc_feholdexcept_setroundl libc_feholdexcept_setround
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#define libc_fetestexceptl libc_fetestexcept
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#define libc_fesetenvl libc_fesetenv
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#define libc_feupdateenv_testl libc_feupdateenv_test
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#define libc_feupdateenvl libc_feupdateenv
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#define libc_feholdsetroundl libc_feholdsetround
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#define libc_feresetroundl libc_feresetround
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/* We have support for rounding mode context. */
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#define HAVE_RM_CTX 1
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static __always_inline void
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libc_feholdexcept_setround_sparc_ctx (struct rm_ctx *ctx, int round)
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{
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fenv_t new;
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__fenv_stfsr(ctx->env);
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new = ctx->env & ~((0x1f << 23) | FE_ALL_EXCEPT);
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new = (new & ~__FE_ROUND_MASK) | round;
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if (__glibc_unlikely (new != ctx->env))
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{
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__fenv_ldfsr(new);
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ctx->updated_status = true;
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}
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else
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ctx->updated_status = false;
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}
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static __always_inline void
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libc_fesetenv_sparc_ctx (struct rm_ctx *ctx)
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{
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libc_fesetenv(&ctx->env);
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}
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static __always_inline void
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libc_feupdateenv_sparc_ctx (struct rm_ctx *ctx)
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{
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if (__glibc_unlikely (ctx->updated_status))
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libc_feupdateenv_test (&ctx->env, 0);
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}
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static __always_inline void
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libc_feholdsetround_sparc_ctx (struct rm_ctx *ctx, int round)
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{
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fenv_t new;
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__fenv_stfsr(ctx->env);
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new = (ctx->env & ~__FE_ROUND_MASK) | round;
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if (__glibc_unlikely (new != ctx->env))
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{
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__fenv_ldfsr(new);
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ctx->updated_status = true;
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}
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else
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ctx->updated_status = false;
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}
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#define libc_feholdexcept_setround_ctx libc_feholdexcept_setround_sparc_ctx
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#define libc_feholdexcept_setroundf_ctx libc_feholdexcept_setround_sparc_ctx
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#define libc_feholdexcept_setroundl_ctx libc_feholdexcept_setround_sparc_ctx
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#define libc_fesetenv_ctx libc_fesetenv_sparc_ctx
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#define libc_fesetenvf_ctx libc_fesetenv_sparc_ctx
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#define libc_fesetenvl_ctx libc_fesetenv_sparc_ctx
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#define libc_feupdateenv_ctx libc_feupdateenv_sparc_ctx
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#define libc_feupdateenvf_ctx libc_feupdateenv_sparc_ctx
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#define libc_feupdateenvl_ctx libc_feupdateenv_sparc_ctx
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#define libc_feresetround_ctx libc_feupdateenv_sparc_ctx
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#define libc_feresetroundf_ctx libc_feupdateenv_sparc_ctx
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#define libc_feresetroundl_ctx libc_feupdateenv_sparc_ctx
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#define libc_feholdsetround_ctx libc_feholdsetround_sparc_ctx
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#define libc_feholdsetroundf_ctx libc_feholdsetround_sparc_ctx
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#define libc_feholdsetroundl_ctx libc_feholdsetround_sparc_ctx
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#include_next <fenv_private.h>
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#endif /* SPARC_FENV_PRIVATE_H */
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