diff options
| -rw-r--r-- | malloc/Makefile | 1 | ||||
| -rw-r--r-- | malloc/malloc-internal.h | 41 | ||||
| -rw-r--r-- | malloc/tst-mallocalign1.c (renamed from sysdeps/x86_64/tst-mallocalign1.c) | 31 | ||||
| -rw-r--r-- | sysdeps/generic/malloc-machine.h | 1 | ||||
| -rw-r--r-- | sysdeps/generic/malloc-size.h | 64 | ||||
| -rw-r--r-- | sysdeps/i386/Makefile | 4 | ||||
| -rw-r--r-- | sysdeps/x86_64/Makefile | 4 | ||||
| -rw-r--r-- | sysdeps/x86_64/x32/Makefile | 4 |
8 files changed, 89 insertions, 61 deletions
diff --git a/malloc/Makefile b/malloc/Makefile index 37a9a4e..b685ed6 100644 --- a/malloc/Makefile +++ b/malloc/Makefile @@ -42,6 +42,7 @@ tests := mallocbug tst-malloc tst-valloc tst-calloc tst-obstack \ tst-malloc-stats-cancellation \ tst-tcfree1 tst-tcfree2 tst-tcfree3 \ tst-safe-linking \ + tst-mallocalign1 \ tests-static := \ tst-interpose-static-nothread \ diff --git a/malloc/malloc-internal.h b/malloc/malloc-internal.h index 258f295..0c7b5a1 100644 --- a/malloc/malloc-internal.h +++ b/malloc/malloc-internal.h @@ -21,46 +21,7 @@ #include <malloc-machine.h> #include <malloc-sysdep.h> - -/* INTERNAL_SIZE_T is the word-size used for internal bookkeeping of - chunk sizes. - - The default version is the same as size_t. - - While not strictly necessary, it is best to define this as an - unsigned type, even if size_t is a signed type. This may avoid some - artificial size limitations on some systems. - - On a 64-bit machine, you may be able to reduce malloc overhead by - defining INTERNAL_SIZE_T to be a 32 bit `unsigned int' at the - expense of not being able to handle more than 2^32 of malloced - space. If this limitation is acceptable, you are encouraged to set - this unless you are on a platform requiring 16byte alignments. In - this case the alignment requirements turn out to negate any - potential advantages of decreasing size_t word size. - - Implementors: Beware of the possible combinations of: - - INTERNAL_SIZE_T might be signed or unsigned, might be 32 or 64 bits, - and might be the same width as int or as long - - size_t might have different width and signedness as INTERNAL_SIZE_T - - int and long might be 32 or 64 bits, and might be the same width - - To deal with this, most comparisons and difference computations - among INTERNAL_SIZE_Ts should cast them to unsigned long, being - aware of the fact that casting an unsigned int to a wider long does - not sign-extend. (This also makes checking for negative numbers - awkward.) Some of these casts result in harmless compiler warnings - on some systems. */ -#ifndef INTERNAL_SIZE_T -# define INTERNAL_SIZE_T size_t -#endif - -/* The corresponding word size. */ -#define SIZE_SZ (sizeof (INTERNAL_SIZE_T)) - -/* The corresponding bit mask value. */ -#define MALLOC_ALIGN_MASK (MALLOC_ALIGNMENT - 1) - +#include <malloc-size.h> /* Called in the parent process before a fork. */ void __malloc_fork_lock_parent (void) attribute_hidden; diff --git a/sysdeps/x86_64/tst-mallocalign1.c b/malloc/tst-mallocalign1.c index 33a6375..294e821 100644 --- a/sysdeps/x86_64/tst-mallocalign1.c +++ b/malloc/tst-mallocalign1.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2012-2021 Free Software Foundation, Inc. +/* Verify that MALLOC_ALIGNMENT is honored by malloc. + Copyright (C) 2012-2021 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 @@ -17,17 +18,16 @@ #include <stdio.h> #include <stdlib.h> +#include <inttypes.h> +#include <malloc-size.h> -/* Specified by x86-64 psABI. */ -#define ALIGN_MASK (16 - 1) - -void * +static void * test (size_t s) { void *p = malloc (s); - printf ("malloc: %ld, %p: %ld\n", (unsigned long) s, p, - ((unsigned long) p) & ALIGN_MASK); + printf ("malloc: %zu, %p: %zu\n", s, p, + ((uintptr_t) p) & MALLOC_ALIGN_MASK); return p; } @@ -38,35 +38,34 @@ do_test (void) int ret = 0; p = test (2); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); p = test (8); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); p = test (13); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); p = test (16); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); p = test (23); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); p = test (43); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); p = test (123); - ret |= (unsigned long) p & ALIGN_MASK; + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; free (p); return ret; } -#define TEST_FUNCTION do_test () -#include "../test-skeleton.c" +#include <support/test-driver.c> diff --git a/sysdeps/generic/malloc-machine.h b/sysdeps/generic/malloc-machine.h index a71f236..121d8ad 100644 --- a/sysdeps/generic/malloc-machine.h +++ b/sysdeps/generic/malloc-machine.h @@ -21,7 +21,6 @@ #define _GENERIC_MALLOC_MACHINE_H #include <atomic.h> -#include <malloc-alignment.h> #ifndef atomic_full_barrier # define atomic_full_barrier() __asm ("" ::: "memory") diff --git a/sysdeps/generic/malloc-size.h b/sysdeps/generic/malloc-size.h new file mode 100644 index 0000000..41901b9 --- /dev/null +++ b/sysdeps/generic/malloc-size.h @@ -0,0 +1,64 @@ +/* Define INTERNAL_SIZE_T, SIZE_SZ, MALLOC_ALIGNMENT and MALLOC_ALIGN_MASK + for malloc. + Copyright (C) 2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _GENERIC_MALLOC_SIZE_H +#define _GENERIC_MALLOC_SIZE_H + +/* INTERNAL_SIZE_T is the word-size used for internal bookkeeping of + chunk sizes. + + The default version is the same as size_t. + + While not strictly necessary, it is best to define this as an + unsigned type, even if size_t is a signed type. This may avoid some + artificial size limitations on some systems. + + On a 64-bit machine, you may be able to reduce malloc overhead by + defining INTERNAL_SIZE_T to be a 32 bit `unsigned int' at the + expense of not being able to handle more than 2^32 of malloced + space. If this limitation is acceptable, you are encouraged to set + this unless you are on a platform requiring 16byte alignments. In + this case the alignment requirements turn out to negate any + potential advantages of decreasing size_t word size. + + Implementors: Beware of the possible combinations of: + - INTERNAL_SIZE_T might be signed or unsigned, might be 32 or 64 bits, + and might be the same width as int or as long + - size_t might have different width and signedness as INTERNAL_SIZE_T + - int and long might be 32 or 64 bits, and might be the same width + + To deal with this, most comparisons and difference computations + among INTERNAL_SIZE_Ts should cast them to unsigned long, being + aware of the fact that casting an unsigned int to a wider long does + not sign-extend. (This also makes checking for negative numbers + awkward.) Some of these casts result in harmless compiler warnings + on some systems. */ +#ifndef INTERNAL_SIZE_T +# define INTERNAL_SIZE_T size_t +#endif + +/* The corresponding word size. */ +#define SIZE_SZ (sizeof (INTERNAL_SIZE_T)) + +#include <malloc-alignment.h> + +/* The corresponding bit mask value. */ +#define MALLOC_ALIGN_MASK (MALLOC_ALIGNMENT - 1) + +#endif /* _GENERIC_MALLOC_SIZE_H */ diff --git a/sysdeps/i386/Makefile b/sysdeps/i386/Makefile index a2e8c0b..8fb65c0 100644 --- a/sysdeps/i386/Makefile +++ b/sysdeps/i386/Makefile @@ -5,6 +5,10 @@ asm-CPPFLAGS += -DGAS_SYNTAX # The i386 `long double' is a distinct type we support. long-double-fcts = yes +ifeq ($(subdir),malloc) +tests-exclude-mcheck += tst-mallocalign1 +endif + ifeq ($(subdir),math) # These functions change the rounding mode internally and need to # update both the SSE2 rounding mode and the 387 rounding mode. See diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile index 3fc03f4..22c5b63 100644 --- a/sysdeps/x86_64/Makefile +++ b/sysdeps/x86_64/Makefile @@ -13,10 +13,6 @@ sysdep_routines += _mcount sysdep_noprof += _mcount endif -ifeq ($(subdir),malloc) -tests += tst-mallocalign1 -endif - ifeq ($(subdir),string) sysdep_routines += strcasecmp_l-nonascii strncase_l-nonascii gen-as-const-headers += locale-defines.sym diff --git a/sysdeps/x86_64/x32/Makefile b/sysdeps/x86_64/x32/Makefile index 8748956..62919c7 100644 --- a/sysdeps/x86_64/x32/Makefile +++ b/sysdeps/x86_64/x32/Makefile @@ -1,3 +1,7 @@ +ifeq ($(subdir),malloc) +tests-exclude-mcheck += tst-mallocalign1 +endif + ifeq ($(subdir),math) # Since x32 returns 32-bit long int and 64-bit long long int in the # same 64-bit register, we make the 32b-bit lround an alias of the |