diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/power4')
3 files changed, 105 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile new file mode 100644 index 0000000000..af8d49667e --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile @@ -0,0 +1,3 @@ +ifeq ($(subdir),string) +sysdep_routines += +endif diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c new file mode 100644 index 0000000000..f4e55aedfa --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c @@ -0,0 +1,50 @@ +/* Enumerate available IFUNC implementations of a function. PowerPC32 version. + Copyright (C) 2013 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, see + <http://www.gnu.org/licenses/>. */ + +#include <assert.h> +#include <string.h> +#include <wchar.h> +#include <ldsodefs.h> +#include <ifunc-impl-list.h> + +/* Maximum number of IFUNC implementations. */ +#define MAX_IFUNC 6 + +size_t +__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, + size_t max) +{ + assert (max >= MAX_IFUNC); + + size_t i = 0; + + unsigned long int hwcap = GLRO(dl_hwcap); + /* hwcap contains only the latest supported ISA, the code checks which is + and fills the previous supported ones. */ + if (hwcap & PPC_FEATURE_ARCH_2_06) + hwcap |= PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_POWER5_PLUS | + PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4; + else if (hwcap & PPC_FEATURE_ARCH_2_05) + hwcap |= PPC_FEATURE_POWER5_PLUS | PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4; + else if (hwcap & PPC_FEATURE_POWER5_PLUS) + hwcap |= PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4; + else if (hwcap & PPC_FEATURE_POWER5) + hwcap |= PPC_FEATURE_POWER4; + + return i; +} diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h b/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h new file mode 100644 index 0000000000..490c0b4e7a --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h @@ -0,0 +1,52 @@ +/* This file is part of the GNU C Library. + Copyright (C) 2013 Free Software Foundation, Inc. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#include <ldsodefs.h> + +/* The code checks if _rtld_global_ro was realocated before trying to access + the dl_hwcap field. The assembly is to make the compiler not optimize the + test (&_rtld_global_ro != NULL), which is always true in ISO C (but not + in that case since _rtld_global_ro might not been realocated yet). */ +#if defined(SHARED) && !defined(IS_IN_rtld) +# define __GLRO(value) \ + ({ volatile void **__p = (volatile void**)(&_rtld_global_ro); \ + unsigned long int __ret; \ + asm ("# x in %0" : "+r" (__p)); \ + __ret = (__p) ? GLRO(value) : 0; \ + __ret; }) +#else +# define __GLRO(value) GLRO(value) +#endif + +/* dl_hwcap contains only the latest supported ISA, the macro checks which is + and fills the previous ones. */ +#define INIT_ARCH() \ + unsigned long int hwcap = __GLRO(dl_hwcap); \ + if (hwcap & PPC_FEATURE_ARCH_2_06) \ + hwcap |= PPC_FEATURE_ARCH_2_05 | \ + PPC_FEATURE_POWER5_PLUS | \ + PPC_FEATURE_POWER5 | \ + PPC_FEATURE_POWER4; \ + else if (hwcap & PPC_FEATURE_ARCH_2_05) \ + hwcap |= PPC_FEATURE_POWER5_PLUS | \ + PPC_FEATURE_POWER5 | \ + PPC_FEATURE_POWER4; \ + else if (hwcap & PPC_FEATURE_POWER5_PLUS) \ + hwcap |= PPC_FEATURE_POWER5 | \ + PPC_FEATURE_POWER4; \ + else if (hwcap & PPC_FEATURE_POWER5) \ + hwcap |= PPC_FEATURE_POWER4; |