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authorGabe Black <gabeblack@google.com>2013-11-23 00:54:40 -0800
committerIsaac Christensen <isaac.christensen@se-eng.com>2014-09-15 17:40:17 +0200
commitfa73875f3c016fb544c4daa8a7053905dbd1a33e (patch)
tree7822a7bf8a3e092235ef9ed338a0dc129739819d /payloads
parentd84afd3e61af870e01b5be66530ea5df4469b0c8 (diff)
downloadcoreboot-fa73875f3c016fb544c4daa8a7053905dbd1a33e.tar.xz
libpayload: Add wrappers for malloc which check its return value.
The xmalloc wrapper checks whether the malloc succeeded, and if not stops execution and prints a message. xmalloc always returns a valid pointer. The xzalloc wrapper does the same thing, but also zeroes the memory before returning it. Old-Change-Id: I00e7de04a5c368ab3603530b98bd3e3596e10632 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/178001 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 4029796d4f66601e33ae3038dbfc3299f56baf89) libpayload: malloc: Fix xmalloc() for zero byte allocations The C standard considers it legal to return a NULL pointer for zero length memory allocations, and our malloc implementation does in fact make use of that. xmalloc() and xzmalloc() should therefore not consider this case a failure. Also fixed a minor formatting issue. Old-Change-Id: Ib9b75df9458ce2ba75fd0bc0af9814a3323298eb Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/178725 Reviewed-by: Mike Frysinger <vapier@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 3033437e9d89c6072464860ea50ea27dcb76fe54) Squashed 2 libpayload malloc related commits. Change-Id: I682ef5f4aad58c93ae2be40e2edc1fd29e5d0438 Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6890 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
Diffstat (limited to 'payloads')
-rw-r--r--payloads/libpayload/include/stdlib.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/payloads/libpayload/include/stdlib.h b/payloads/libpayload/include/stdlib.h
index 1ed92d5cfd..7113b6f7d3 100644
--- a/payloads/libpayload/include/stdlib.h
+++ b/payloads/libpayload/include/stdlib.h
@@ -2,6 +2,7 @@
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright 2013 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -30,7 +31,9 @@
#ifndef _STDLIB_H
#define _STDLIB_H
+#include <die.h>
#include <stddef.h>
+#include <string.h>
/**
* @defgroup malloc Memory allocation functions
@@ -145,6 +148,27 @@ void *dma_memalign(size_t align, size_t size);
void init_dma_memory(void *start, u32 size);
int dma_initialized(void);
int dma_coherent(void *ptr);
+
+static inline void *xmalloc_work(size_t size, const char *file,
+ const char *func, int line)
+{
+ void *ret = malloc(size);
+ if (!ret && size) {
+ die_work(file, func, line, "Failed to malloc %zu bytes.\n",
+ size);
+ }
+ return ret;
+}
+#define xmalloc(size) xmalloc_work((size), __FILE__, __FUNCTION__, __LINE__)
+
+static inline void *xzalloc_work(size_t size, const char *file,
+ const char *func, int line)
+{
+ void *ret = xmalloc_work(size, file, func, line);
+ memset(ret, 0, size);
+ return ret;
+}
+#define xzalloc(size) xzalloc_work((size), __FILE__, __FUNCTION__, __LINE__)
/** @} */
/**