[OE-core] [PATCH] glibc: support powerpc e5500 and e6500
C.r. Guo
chunrong.guo at nxp.com
Tue Feb 19 05:50:32 UTC 2019
From: Chunrong Guo <chunrong.guo at nxp.com>
Signed-off-by: Chunrong Guo <chunrong.guo at nxp.com>
---
.../glibc/0031-glibc-support-e5500-and-e6500.patch | 564 +++++++++++++++++++++
meta/recipes-core/glibc/glibc_2.29.bb | 1 +
2 files changed, 565 insertions(+)
create mode 100644 meta/recipes-core/glibc/glibc/0031-glibc-support-e5500-and-e6500.patch
diff --git a/meta/recipes-core/glibc/glibc/0031-glibc-support-e5500-and-e6500.patch b/meta/recipes-core/glibc/glibc/0031-glibc-support-e5500-and-e6500.patch
new file mode 100644
index 0000000..146115a
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/0031-glibc-support-e5500-and-e6500.patch
@@ -0,0 +1,564 @@
+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
+
+Upstream-Status: Pending
+
+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_2.29.bb b/meta/recipes-core/glibc/glibc_2.29.bb
index 72db00c..2b495c4 100644
--- a/meta/recipes-core/glibc/glibc_2.29.bb
+++ b/meta/recipes-core/glibc/glibc_2.29.bb
@@ -56,6 +56,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \
file://0028-intl-Emit-no-lines-in-bison-generated-files.patch \
file://0029-inject-file-assembly-directives.patch \
file://0030-locale-prevent-maybe-uninitialized-errors-with-Os-BZ.patch \
+ file://0031-glibc-support-e5500-and-e6500.patch \
"
S = "${WORKDIR}/git"
--
2.7.4
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