diff options
| -rw-r--r-- | ChangeLog | 14 | ||||
| -rw-r--r-- | Rules | 5 | ||||
| -rw-r--r-- | include/ifunc-impl-list.h | 56 | ||||
| -rw-r--r-- | misc/Makefile | 2 | ||||
| -rw-r--r-- | misc/Versions | 1 | ||||
| -rw-r--r-- | misc/ifunc-impl-list.c | 32 | ||||
| -rw-r--r-- | string/test-string.h | 57 |
7 files changed, 165 insertions, 2 deletions
@@ -1,5 +1,19 @@ 2012-10-11 H.J. Lu <hongjiu.lu@intel.com> + * Rules [$(multi-arch) = no] (tests): Filter out $(tests-ifunc). + [$(multi-arch) = no] (xtests): Filter out $(xtests-ifunc). + * include/ifunc-impl-list.h: New file. + * misc/ifunc-impl-list.c: Likewise. + * misc/Makefile (routines): Add ifunc-impl-list. + * misc/Versions (GLIBC_PRIVATE): Add __libc_ifunc_impl_list. + * string/test-string.h: Include <ifunc-impl-list.h>. + [TEST_IFUNC && TEST_NAME] (func_list, func_count, impl_count, + impl_array): New variables. + (FOR_EACH_IMPL): Support func_list if TEST_IFUNC and TEST_NAME + are defined. + (test_init): Call __libc_ifunc_impl_list to initialize + func_list if TEST_IFUNC and TEST_NAME are defined. + * string/Makefile (strop-tests): Add bcopy and bzero. * string/test-bcopy.c: New file. * string/test-bzero.c: Likewise. @@ -84,6 +84,11 @@ common-generated += dummy.o dummy.c # This makes all the auxiliary and test programs. .PHONY: others tests +ifeq ($(multi-arch),no) +tests := $(filter-out $(tests-ifunc), $(tests)) +xtests := $(filter-out $(xtests-ifunc), $(xtests)) +endif + ifeq ($(build-programs),yes) others: $(addprefix $(objpfx),$(others) $(sysdep-others) $(extra-objs)) else diff --git a/include/ifunc-impl-list.h b/include/ifunc-impl-list.h new file mode 100644 index 0000000..36444d3 --- /dev/null +++ b/include/ifunc-impl-list.h @@ -0,0 +1,56 @@ +/* Internal header file for __libc_supported_implementations. + Copyright (C) 2012 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/>. */ + +#ifndef _IFUNC_IMPL_LIST_H +#define _IFUNC_IMPL_LIST_H 1 + +#include <stdbool.h> +#include <stddef.h> + +struct libc_ifunc_impl +{ + /* The name of function to be tested. */ + const char *name; + /* The address of function to be tested. */ + void (*fn) (void); + /* True if this implementation is usable on this machine. */ + bool usable; +}; + +/* Add an IFUNC implementation, IMPL, for function FUNC, to ARRAY with + USABLE at index I and advance I by one. */ +#define IFUNC_IMPL_ADD(array, i, func, usable, impl) \ + extern __typeof (func) impl attribute_hidden; \ + (array)[i++] = (struct libc_ifunc_impl) { #impl, (void (*) (void)) impl, (usable) }; + +/* Return the number of IFUNC implementations, N, for function FUNC if + string NAME matches FUNC. */ +#define IFUNC_IMPL(n, name, func, ...) \ + if (strcmp (name, #func) == 0) \ + { \ + __VA_ARGS__; \ + return n; \ + } + +/* Fill ARRAY of MAX elements with IFUNC implementations for function + NAME and return the number of valid entries. */ +extern size_t __libc_ifunc_impl_list (const char *name, + struct libc_ifunc_impl *array, + size_t max); + +#endif /* ifunc-impl-list.h */ diff --git a/misc/Makefile b/misc/Makefile index e5e9b9f..ea68d26 100644 --- a/misc/Makefile +++ b/misc/Makefile @@ -65,7 +65,7 @@ routines := brk sbrk sstk ioctl \ getloadavg getclktck \ fgetxattr flistxattr fremovexattr fsetxattr getxattr \ listxattr lgetxattr llistxattr lremovexattr lsetxattr \ - removexattr setxattr getauxval + removexattr setxattr getauxval ifunc-impl-list generated := tst-error1.mtrace tst-error1-mem diff --git a/misc/Versions b/misc/Versions index b2a9147..64632f0 100644 --- a/misc/Versions +++ b/misc/Versions @@ -151,5 +151,6 @@ libc { } GLIBC_PRIVATE { __madvise; + __libc_ifunc_impl_list; } } diff --git a/misc/ifunc-impl-list.c b/misc/ifunc-impl-list.c new file mode 100644 index 0000000..c4b460d --- /dev/null +++ b/misc/ifunc-impl-list.c @@ -0,0 +1,32 @@ +/* Enumerate available IFUNC implementations of a function. Stub version. + Copyright (C) 2012 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 <ifunc-impl-list.h> + +/* Fill ARRAY of MAX elements with IFUNC implementations for function + NAME supported on target machine and return the number of valid + entries. */ + +size_t +__libc_ifunc_impl_list + (const char *name __attribute__ ((unused)), + struct libc_ifunc_impl *array __attribute__ ((unused)), + size_t max __attribute__ ((unused))) +{ + return 0; +} diff --git a/string/test-string.h b/string/test-string.h index c94d822..102702c 100644 --- a/string/test-string.h +++ b/string/test-string.h @@ -50,6 +50,7 @@ extern impl_t __start_impls[], __stop_impls[]; #include <error.h> #include <errno.h> #include <time.h> +#include <ifunc-impl-list.h> #define GL(x) _##x #define GLRO(x) _##x #include <hp-timing.h> @@ -106,9 +107,57 @@ size_t iterations = 100000; #define CALL(impl, ...) \ (* (proto_t) (impl)->fn) (__VA_ARGS__) -#define FOR_EACH_IMPL(impl, notall) \ +#if defined TEST_IFUNC && defined TEST_NAME +/* Increase size of FUNC_LIST if assert is triggered at run-time. */ +static struct libc_ifunc_impl func_list[32]; +static int func_count; +static int impl_count = -1; +static impl_t *impl_array; + +# define FOR_EACH_IMPL(impl, notall) \ + impl_t *impl; \ + int count; \ + if (impl_count == -1) \ + { \ + impl_count = 0; \ + if (func_count != 0) \ + { \ + int f; \ + impl_t *skip = NULL, *a; \ + for (impl = __start_impls; impl < __stop_impls; ++impl) \ + if (strcmp (impl->name, TEST_NAME) == 0) \ + skip = impl; \ + else \ + impl_count++; \ + a = impl_array = malloc ((impl_count + func_count) * \ + sizeof (impl_t)); \ + for (impl = __start_impls; impl < __stop_impls; ++impl) \ + if (impl != skip) \ + *a++ = *impl; \ + for (f = 0; f < func_count; f++) \ + if (func_list[f].usable) \ + { \ + a->name = func_list[f].name; \ + a->fn = func_list[f].fn; \ + a->test = 1; \ + a++; \ + } \ + impl_count = a - impl_array; \ + } \ + else \ + { \ + impl_count = __stop_impls - __start_impls; \ + impl_array = __start_impls; \ + } \ + } \ + impl = impl_array; \ + for (count = 0; count < impl_count; ++count, ++impl) \ + if (!notall || impl->test) +#else +# define FOR_EACH_IMPL(impl, notall) \ for (impl_t *impl = __start_impls; impl < __stop_impls; ++impl) \ if (!notall || impl->test) +#endif #define HP_TIMING_BEST(best_time, start, end) \ do \ @@ -127,6 +176,12 @@ size_t iterations = 100000; static void test_init (void) { +#if defined TEST_IFUNC && defined TEST_NAME + func_count = __libc_ifunc_impl_list (TEST_NAME, func_list, + (sizeof func_list + / sizeof func_list[0])); +#endif + page_size = 2 * getpagesize (); #ifdef MIN_PAGE_SIZE if (page_size < MIN_PAGE_SIZE) |