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0002-calloc.patch
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File 0002-calloc.patch of Package qemu
From 0d8b4ce740e8e2c894f8a7f163ad9dfd93463bde Mon Sep 17 00:00:00 2001 From: Daniel Axtens <dja@axtens.net> Date: Fri, 10 Apr 2020 01:20:03 +1000 Subject: [PATCH 02/12] calloc Signed-off-by: Daniel Axtens <dja@axtens.net> --- lib/libc/include/stdlib.h | 1 + lib/libc/stdlib/Makefile.inc | 2 +- lib/libc/stdlib/calloc.c | 30 ++++++++++++++++++++++++++++++ 3 files changed, 32 insertions(+), 1 deletion(-) create mode 100644 lib/libc/stdlib/calloc.c diff --git a/roms/SLOF/lib/libc/include/stdlib.h b/roms/SLOF/lib/libc/include/stdlib.h index 5e0eda9..0d1f5ba 100644 --- a/roms/SLOF/lib/libc/include/stdlib.h +++ b/roms/SLOF/lib/libc/include/stdlib.h @@ -19,6 +19,7 @@ void *malloc(size_t size); +void *calloc(size_t nmemb, size_t size); void *realloc(void *ptr, size_t size); void free(void *ptr); void *memalign(size_t boundary, size_t size); diff --git a/roms/SLOF/lib/libc/stdlib/Makefile.inc b/roms/SLOF/lib/libc/stdlib/Makefile.inc index 702f6d7..61c5933 100644 --- a/roms/SLOF/lib/libc/stdlib/Makefile.inc +++ b/roms/SLOF/lib/libc/stdlib/Makefile.inc @@ -12,7 +12,7 @@ STDLIB_SRC_C = error.c atoi.c atol.c strtoul.c strtol.c rand.c \ - malloc.c memalign.c realloc.c free.c + malloc.c calloc.c memalign.c realloc.c free.c STDLIB_SRC_ASM = STDLIB_SRCS = $(STDLIB_SRC_C:%=$(STDLIBCMNDIR)/%) $(STDLIB_SRC_ASM:%=$(STDLIBCMNDIR)/%) diff --git a/roms/SLOF/lib/libc/stdlib/calloc.c b/roms/SLOF/lib/libc/stdlib/calloc.c new file mode 100644 index 0000000..fabb3e0 --- /dev/null +++ b/roms/SLOF/lib/libc/stdlib/calloc.c @@ -0,0 +1,30 @@ +/****************************************************************************** + * Copyright (c) 2020 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + + +#include "stddef.h" +#include "stdlib.h" +#include "string.h" + +void *calloc(size_t nmemb, size_t size) { + size_t alloc_size; + void *ret; + if (__builtin_mul_overflow(nmemb, size, &alloc_size)) { + return NULL; + } + + ret = malloc(alloc_size); + + if (ret) + memset(ret, 0, alloc_size); + return ret; +} -- 2.33.1
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