[OE-core] [PATCH] glibc: glibc support powerpc e5500 and e6500
Burton, Ross
ross.burton at intel.com
Wed Jan 16 12:08:52 UTC 2019
No Upstream-Status or your S-o-b in the patch.
Ross
On Wed, 16 Jan 2019 at 10:13, C.r. Guo <chunrong.guo at nxp.com> wrote:
>
> From: Chunrong Guo <chunrong.guo at nxp.com>
>
> Signed-off-by: Chunrong Guo <chunrong.guo at nxp.com>
> ---
> .../glibc/0035-glibc-support-e5500-and-e6500.patch | 562 +++++++++++++++++++++
> meta/recipes-core/glibc/glibc_2.28.bb | 1 +
> 2 files changed, 563 insertions(+)
> create mode 100644 meta/recipes-core/glibc/glibc/0035-glibc-support-e5500-and-e6500.patch
>
> diff --git a/meta/recipes-core/glibc/glibc/0035-glibc-support-e5500-and-e6500.patch b/meta/recipes-core/glibc/glibc/0035-glibc-support-e5500-and-e6500.patch
> new file mode 100644
> index 0000000..bc54de7
> --- /dev/null
> +++ b/meta/recipes-core/glibc/glibc/0035-glibc-support-e5500-and-e6500.patch
> @@ -0,0 +1,562 @@
> +From 70dc75d3da86dea8b6ebdaedfa76e625a076678e Mon Sep 17 00:00:00 2001
> +From: Chunrong Guo <chunrong.guo at nxp.com>
> +Date: Wed, 31 Oct 2018 17:56:24 +0800
> +Subject: [PATCH] glibc: support e5500 and e6500
> +
> +Signed-off-by: BJ DevOps Team <bjdevops at NXP1.onmicrosoft.com>
> +---
> + sysdeps/powerpc/powerpc64/be/e5500/Implies | 2 +
> + sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrt.c | 137 +++++++++++++++++++++
> + sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrtf.c | 103 ++++++++++++++++
> + .../powerpc/powerpc64/be/e5500/multiarch/Implies | 1 +
> + sysdeps/powerpc/powerpc64/be/e6500/Implies | 2 +
> + sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrt.c | 137 +++++++++++++++++++++
> + sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrtf.c | 103 ++++++++++++++++
> + .../powerpc/powerpc64/be/e6500/multiarch/Implies | 1 +
> + 8 files changed, 486 insertions(+)
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e5500/Implies
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrt.c
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrtf.c
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e5500/multiarch/Implies
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e6500/Implies
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrt.c
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrtf.c
> + create mode 100644 sysdeps/powerpc/powerpc64/be/e6500/multiarch/Implies
> +
> +diff --git a/sysdeps/powerpc/powerpc64/be/e5500/Implies b/sysdeps/powerpc/powerpc64/be/e5500/Implies
> +new file mode 100644
> +index 0000000..a795586
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e5500/Implies
> +@@ -0,0 +1,2 @@
> ++powerpc/powerpc64/e5500
> ++
> +diff --git a/sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrt.c b/sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrt.c
> +new file mode 100644
> +index 0000000..13a8197
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrt.c
> +@@ -0,0 +1,137 @@
> ++/* Double-precision floating point square root.
> ++ Copyright (C) 2010 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++
> ++ The GNU C Library is free software; you can redistribute it and/or
> ++ modify it under the terms of the GNU Lesser General Public
> ++ License as published by the Free Software Foundation; either
> ++ version 2.1 of the License, or (at your option) any later version.
> ++
> ++ The GNU C Library is distributed in the hope that it will be useful,
> ++ but WITHOUT ANY WARRANTY; without even the implied warranty of
> ++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> ++ Lesser General Public License for more details.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, write to the Free
> ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> ++ 02111-1307 USA. */
> ++
> ++#include <math.h>
> ++#include <math_private.h>
> ++#include <fenv_libc.h>
> ++#include <inttypes.h>
> ++
> ++#include <sysdep.h>
> ++#include <ldsodefs.h>
> ++
> ++static const ieee_float_shape_type a_nan = {.word = 0x7fc00000 };
> ++static const ieee_float_shape_type a_inf = {.word = 0x7f800000 };
> ++static const float two108 = 3.245185536584267269e+32;
> ++static const float twom54 = 5.551115123125782702e-17;
> ++static const float half = 0.5;
> ++
> ++/* The method is based on the descriptions in:
> ++
> ++ _The Handbook of Floating-Pointer Arithmetic_ by Muller et al., chapter 5;
> ++ _IA-64 and Elementary Functions: Speed and Precision_ by Markstein, chapter 9
> ++
> ++ We find the actual square root and half of its reciprocal
> ++ simultaneously. */
> ++
> ++double
> ++__slow_ieee754_sqrt (double b)
> ++{
> ++ if (__builtin_expect (b > 0, 1))
> ++ {
> ++ double y, g, h, d, r;
> ++ ieee_double_shape_type u;
> ++
> ++ if (__builtin_expect (b != a_inf.value, 1))
> ++ {
> ++ fenv_t fe;
> ++
> ++ fe = fegetenv_register ();
> ++
> ++ u.value = b;
> ++
> ++ relax_fenv_state ();
> ++
> ++ __asm__ ("frsqrte %[estimate], %[x]\n"
> ++ : [estimate] "=f" (y) : [x] "f" (b));
> ++
> ++ /* Following Muller et al, page 168, equation 5.20.
> ++
> ++ h goes to 1/(2*sqrt(b))
> ++ g goes to sqrt(b).
> ++
> ++ We need three iterations to get within 1ulp. */
> ++
> ++ /* Indicate that these can be performed prior to the branch. GCC
> ++ insists on sinking them below the branch, however; it seems like
> ++ they'd be better before the branch so that we can cover any latency
> ++ from storing the argument and loading its high word. Oh well. */
> ++
> ++ g = b * y;
> ++ h = 0.5 * y;
> ++
> ++ /* Handle small numbers by scaling. */
> ++ if (__builtin_expect ((u.parts.msw & 0x7ff00000) <= 0x02000000, 0))
> ++ return __slow_ieee754_sqrt (b * two108) * twom54;
> ++
> ++#define FMADD(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fmadd %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++#define FNMSUB(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fnmsub %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++
> ++ r = FNMSUB (g, h, half);
> ++ g = FMADD (g, r, g);
> ++ h = FMADD (h, r, h);
> ++
> ++ r = FNMSUB (g, h, half);
> ++ g = FMADD (g, r, g);
> ++ h = FMADD (h, r, h);
> ++
> ++ r = FNMSUB (g, h, half);
> ++ g = FMADD (g, r, g);
> ++ h = FMADD (h, r, h);
> ++
> ++ /* g is now +/- 1ulp, or exactly equal to, the square root of b. */
> ++
> ++ /* Final refinement. */
> ++ d = FNMSUB (g, g, b);
> ++
> ++ fesetenv_register (fe);
> ++ return FMADD (d, h, g);
> ++ }
> ++ }
> ++ else if (b < 0)
> ++ {
> ++ /* For some reason, some PowerPC32 processors don't implement
> ++ FE_INVALID_SQRT. */
> ++#ifdef FE_INVALID_SQRT
> ++ feraiseexcept (FE_INVALID_SQRT);
> ++
> ++ fenv_union_t u = { .fenv = fegetenv_register () };
> ++ if ((u.l & FE_INVALID) == 0)
> ++#endif
> ++ feraiseexcept (FE_INVALID);
> ++ b = a_nan.value;
> ++ }
> ++ return f_wash (b);
> ++}
> ++
> ++#undef __ieee754_sqrt
> ++double
> ++__ieee754_sqrt (double x)
> ++{
> ++ return __slow_ieee754_sqrt (x);
> ++}
> ++
> ++strong_alias (__ieee754_sqrt, __sqrt_finite)
> +diff --git a/sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrtf.c b/sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrtf.c
> +new file mode 100644
> +index 0000000..fae2d81
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e5500/fpu/e_sqrtf.c
> +@@ -0,0 +1,103 @@
> ++/* Single-precision floating point square root.
> ++ Copyright (C) 2010 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++
> ++ The GNU C Library is free software; you can redistribute it and/or
> ++ modify it under the terms of the GNU Lesser General Public
> ++ License as published by the Free Software Foundation; either
> ++ version 2.1 of the License, or (at your option) any later version.
> ++
> ++ The GNU C Library is distributed in the hope that it will be useful,
> ++ but WITHOUT ANY WARRANTY; without even the implied warranty of
> ++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> ++ Lesser General Public License for more details.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, write to the Free
> ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> ++ 02111-1307 USA. */
> ++
> ++#include <math.h>
> ++#include <math_private.h>
> ++#include <fenv_libc.h>
> ++#include <inttypes.h>
> ++
> ++#include <sysdep.h>
> ++#include <ldsodefs.h>
> ++
> ++static const ieee_float_shape_type a_nan = {.word = 0x7fc00000 };
> ++static const ieee_float_shape_type a_inf = {.word = 0x7f800000 };
> ++static const float threehalf = 1.5;
> ++
> ++/* The method is based on the descriptions in:
> ++
> ++ _The Handbook of Floating-Pointer Arithmetic_ by Muller et al., chapter 5;
> ++ _IA-64 and Elementary Functions: Speed and Precision_ by Markstein, chapter 9
> ++
> ++ We find the reciprocal square root and use that to compute the actual
> ++ square root. */
> ++
> ++float
> ++__slow_ieee754_sqrtf (float b)
> ++{
> ++ if (__builtin_expect (b > 0, 1))
> ++ {
> ++#define FMSUB(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fmsub %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++#define FNMSUB(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fnmsub %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++
> ++ if (__builtin_expect (b != a_inf.value, 1))
> ++ {
> ++ double y, x;
> ++ fenv_t fe;
> ++
> ++ fe = fegetenv_register ();
> ++
> ++ relax_fenv_state ();
> ++
> ++ /* Compute y = 1.5 * b - b. Uses fewer constants than y = 0.5 * b. */
> ++ y = FMSUB (threehalf, b, b);
> ++
> ++ /* Initial estimate. */
> ++ __asm__ ("frsqrte %[x], %[b]\n" : [x] "=f" (x) : [b] "f" (b));
> ++
> ++ /* Iterate. x_{n+1} = x_n * (1.5 - y * (x_n * x_n)). */
> ++ x = x * FNMSUB (y, x * x, threehalf);
> ++ x = x * FNMSUB (y, x * x, threehalf);
> ++ x = x * FNMSUB (y, x * x, threehalf);
> ++
> ++ /* All done. */
> ++ fesetenv_register (fe);
> ++ return x * b;
> ++ }
> ++ }
> ++ else if (b < 0)
> ++ {
> ++ /* For some reason, some PowerPC32 processors don't implement
> ++ FE_INVALID_SQRT. */
> ++#ifdef FE_INVALID_SQRT
> ++ feraiseexcept (FE_INVALID_SQRT);
> ++
> ++ fenv_union_t u = { .fenv = fegetenv_register () };
> ++ if ((u.l & FE_INVALID) == 0)
> ++#endif
> ++ feraiseexcept (FE_INVALID);
> ++ b = a_nan.value;
> ++ }
> ++ return f_washf (b);
> ++}
> ++#undef __ieee754_sqrtf
> ++float
> ++__ieee754_sqrtf (float x)
> ++{
> ++ return __slow_ieee754_sqrtf (x);
> ++}
> ++
> ++strong_alias (__ieee754_sqrtf, __sqrtf_finite)
> +diff --git a/sysdeps/powerpc/powerpc64/be/e5500/multiarch/Implies b/sysdeps/powerpc/powerpc64/be/e5500/multiarch/Implies
> +new file mode 100644
> +index 0000000..30edcf7
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e5500/multiarch/Implies
> +@@ -0,0 +1 @@
> ++powerpc/powerpc64/multiarch
> +diff --git a/sysdeps/powerpc/powerpc64/be/e6500/Implies b/sysdeps/powerpc/powerpc64/be/e6500/Implies
> +new file mode 100644
> +index 0000000..9b8fc07
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e6500/Implies
> +@@ -0,0 +1,2 @@
> ++powerpc/powerpc64/e6500
> ++
> +diff --git a/sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrt.c b/sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrt.c
> +new file mode 100644
> +index 0000000..13a8197
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrt.c
> +@@ -0,0 +1,137 @@
> ++/* Double-precision floating point square root.
> ++ Copyright (C) 2010 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++
> ++ The GNU C Library is free software; you can redistribute it and/or
> ++ modify it under the terms of the GNU Lesser General Public
> ++ License as published by the Free Software Foundation; either
> ++ version 2.1 of the License, or (at your option) any later version.
> ++
> ++ The GNU C Library is distributed in the hope that it will be useful,
> ++ but WITHOUT ANY WARRANTY; without even the implied warranty of
> ++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> ++ Lesser General Public License for more details.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, write to the Free
> ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> ++ 02111-1307 USA. */
> ++
> ++#include <math.h>
> ++#include <math_private.h>
> ++#include <fenv_libc.h>
> ++#include <inttypes.h>
> ++
> ++#include <sysdep.h>
> ++#include <ldsodefs.h>
> ++
> ++static const ieee_float_shape_type a_nan = {.word = 0x7fc00000 };
> ++static const ieee_float_shape_type a_inf = {.word = 0x7f800000 };
> ++static const float two108 = 3.245185536584267269e+32;
> ++static const float twom54 = 5.551115123125782702e-17;
> ++static const float half = 0.5;
> ++
> ++/* The method is based on the descriptions in:
> ++
> ++ _The Handbook of Floating-Pointer Arithmetic_ by Muller et al., chapter 5;
> ++ _IA-64 and Elementary Functions: Speed and Precision_ by Markstein, chapter 9
> ++
> ++ We find the actual square root and half of its reciprocal
> ++ simultaneously. */
> ++
> ++double
> ++__slow_ieee754_sqrt (double b)
> ++{
> ++ if (__builtin_expect (b > 0, 1))
> ++ {
> ++ double y, g, h, d, r;
> ++ ieee_double_shape_type u;
> ++
> ++ if (__builtin_expect (b != a_inf.value, 1))
> ++ {
> ++ fenv_t fe;
> ++
> ++ fe = fegetenv_register ();
> ++
> ++ u.value = b;
> ++
> ++ relax_fenv_state ();
> ++
> ++ __asm__ ("frsqrte %[estimate], %[x]\n"
> ++ : [estimate] "=f" (y) : [x] "f" (b));
> ++
> ++ /* Following Muller et al, page 168, equation 5.20.
> ++
> ++ h goes to 1/(2*sqrt(b))
> ++ g goes to sqrt(b).
> ++
> ++ We need three iterations to get within 1ulp. */
> ++
> ++ /* Indicate that these can be performed prior to the branch. GCC
> ++ insists on sinking them below the branch, however; it seems like
> ++ they'd be better before the branch so that we can cover any latency
> ++ from storing the argument and loading its high word. Oh well. */
> ++
> ++ g = b * y;
> ++ h = 0.5 * y;
> ++
> ++ /* Handle small numbers by scaling. */
> ++ if (__builtin_expect ((u.parts.msw & 0x7ff00000) <= 0x02000000, 0))
> ++ return __slow_ieee754_sqrt (b * two108) * twom54;
> ++
> ++#define FMADD(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fmadd %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++#define FNMSUB(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fnmsub %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++
> ++ r = FNMSUB (g, h, half);
> ++ g = FMADD (g, r, g);
> ++ h = FMADD (h, r, h);
> ++
> ++ r = FNMSUB (g, h, half);
> ++ g = FMADD (g, r, g);
> ++ h = FMADD (h, r, h);
> ++
> ++ r = FNMSUB (g, h, half);
> ++ g = FMADD (g, r, g);
> ++ h = FMADD (h, r, h);
> ++
> ++ /* g is now +/- 1ulp, or exactly equal to, the square root of b. */
> ++
> ++ /* Final refinement. */
> ++ d = FNMSUB (g, g, b);
> ++
> ++ fesetenv_register (fe);
> ++ return FMADD (d, h, g);
> ++ }
> ++ }
> ++ else if (b < 0)
> ++ {
> ++ /* For some reason, some PowerPC32 processors don't implement
> ++ FE_INVALID_SQRT. */
> ++#ifdef FE_INVALID_SQRT
> ++ feraiseexcept (FE_INVALID_SQRT);
> ++
> ++ fenv_union_t u = { .fenv = fegetenv_register () };
> ++ if ((u.l & FE_INVALID) == 0)
> ++#endif
> ++ feraiseexcept (FE_INVALID);
> ++ b = a_nan.value;
> ++ }
> ++ return f_wash (b);
> ++}
> ++
> ++#undef __ieee754_sqrt
> ++double
> ++__ieee754_sqrt (double x)
> ++{
> ++ return __slow_ieee754_sqrt (x);
> ++}
> ++
> ++strong_alias (__ieee754_sqrt, __sqrt_finite)
> +diff --git a/sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrtf.c b/sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrtf.c
> +new file mode 100644
> +index 0000000..fae2d81
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e6500/fpu/e_sqrtf.c
> +@@ -0,0 +1,103 @@
> ++/* Single-precision floating point square root.
> ++ Copyright (C) 2010 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++
> ++ The GNU C Library is free software; you can redistribute it and/or
> ++ modify it under the terms of the GNU Lesser General Public
> ++ License as published by the Free Software Foundation; either
> ++ version 2.1 of the License, or (at your option) any later version.
> ++
> ++ The GNU C Library is distributed in the hope that it will be useful,
> ++ but WITHOUT ANY WARRANTY; without even the implied warranty of
> ++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> ++ Lesser General Public License for more details.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, write to the Free
> ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> ++ 02111-1307 USA. */
> ++
> ++#include <math.h>
> ++#include <math_private.h>
> ++#include <fenv_libc.h>
> ++#include <inttypes.h>
> ++
> ++#include <sysdep.h>
> ++#include <ldsodefs.h>
> ++
> ++static const ieee_float_shape_type a_nan = {.word = 0x7fc00000 };
> ++static const ieee_float_shape_type a_inf = {.word = 0x7f800000 };
> ++static const float threehalf = 1.5;
> ++
> ++/* The method is based on the descriptions in:
> ++
> ++ _The Handbook of Floating-Pointer Arithmetic_ by Muller et al., chapter 5;
> ++ _IA-64 and Elementary Functions: Speed and Precision_ by Markstein, chapter 9
> ++
> ++ We find the reciprocal square root and use that to compute the actual
> ++ square root. */
> ++
> ++float
> ++__slow_ieee754_sqrtf (float b)
> ++{
> ++ if (__builtin_expect (b > 0, 1))
> ++ {
> ++#define FMSUB(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fmsub %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++#define FNMSUB(a_, c_, b_) \
> ++ ({ double __r; \
> ++ __asm__ ("fnmsub %[r], %[a], %[c], %[b]\n" \
> ++ : [r] "=f" (__r) : [a] "f" (a_), [c] "f" (c_), [b] "f" (b_)); \
> ++ __r;})
> ++
> ++ if (__builtin_expect (b != a_inf.value, 1))
> ++ {
> ++ double y, x;
> ++ fenv_t fe;
> ++
> ++ fe = fegetenv_register ();
> ++
> ++ relax_fenv_state ();
> ++
> ++ /* Compute y = 1.5 * b - b. Uses fewer constants than y = 0.5 * b. */
> ++ y = FMSUB (threehalf, b, b);
> ++
> ++ /* Initial estimate. */
> ++ __asm__ ("frsqrte %[x], %[b]\n" : [x] "=f" (x) : [b] "f" (b));
> ++
> ++ /* Iterate. x_{n+1} = x_n * (1.5 - y * (x_n * x_n)). */
> ++ x = x * FNMSUB (y, x * x, threehalf);
> ++ x = x * FNMSUB (y, x * x, threehalf);
> ++ x = x * FNMSUB (y, x * x, threehalf);
> ++
> ++ /* All done. */
> ++ fesetenv_register (fe);
> ++ return x * b;
> ++ }
> ++ }
> ++ else if (b < 0)
> ++ {
> ++ /* For some reason, some PowerPC32 processors don't implement
> ++ FE_INVALID_SQRT. */
> ++#ifdef FE_INVALID_SQRT
> ++ feraiseexcept (FE_INVALID_SQRT);
> ++
> ++ fenv_union_t u = { .fenv = fegetenv_register () };
> ++ if ((u.l & FE_INVALID) == 0)
> ++#endif
> ++ feraiseexcept (FE_INVALID);
> ++ b = a_nan.value;
> ++ }
> ++ return f_washf (b);
> ++}
> ++#undef __ieee754_sqrtf
> ++float
> ++__ieee754_sqrtf (float x)
> ++{
> ++ return __slow_ieee754_sqrtf (x);
> ++}
> ++
> ++strong_alias (__ieee754_sqrtf, __sqrtf_finite)
> +diff --git a/sysdeps/powerpc/powerpc64/be/e6500/multiarch/Implies b/sysdeps/powerpc/powerpc64/be/e6500/multiarch/Implies
> +new file mode 100644
> +index 0000000..30edcf7
> +--- /dev/null
> ++++ b/sysdeps/powerpc/powerpc64/be/e6500/multiarch/Implies
> +@@ -0,0 +1 @@
> ++powerpc/powerpc64/multiarch
> +--
> +1.8.3.1
> +
> diff --git a/meta/recipes-core/glibc/glibc_2.28.bb b/meta/recipes-core/glibc/glibc_2.28.bb
> index cebd2d0..f871d23 100644
> --- a/meta/recipes-core/glibc/glibc_2.28.bb
> +++ b/meta/recipes-core/glibc/glibc_2.28.bb
> @@ -49,6 +49,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \
> file://0032-sysdeps-ieee754-soft-fp-ignore-maybe-uninitialized-w.patch \
> file://0033-locale-prevent-maybe-uninitialized-errors-with-Os-BZ.patch \
> file://0034-inject-file-assembly-directives.patch \
> + file://0035-glibc-support-e5500-and-e6500.patch \
> "
>
> NATIVESDKFIXES ?= ""
> --
> 2.7.4
>
> --
> _______________________________________________
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> Openembedded-core at lists.openembedded.org
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