summaryrefslogtreecommitdiff
path: root/payloads/libpayload/libc
diff options
context:
space:
mode:
authorStefan Reinauer <stepan@coresystems.de>2010-03-25 22:15:19 +0000
committerStefan Reinauer <stepan@openbios.org>2010-03-25 22:15:19 +0000
commite5d30b78b7720ba3e511819b7fc51c11d642153b (patch)
tree16e7be335542de064aef267c7c6095f5c8cd3496 /payloads/libpayload/libc
parent516a2a7bfaee5d4aa4d1e7e5ff52d3038513c82f (diff)
downloadcoreboot-e5d30b78b7720ba3e511819b7fc51c11d642153b.tar.xz
libpayload update
* rework Config.in * add string_to_args function to actually make getopt usable. * add strchr * add strlcat * some malloc fixes (exposed by the USB stack) * add malloc debugging (thanks to Matthias Krause from Secunet!) * make LAR support optional, it's not really used anymore * (define htoX macros for ppc) Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Joseph Smith <joe@settoplinux.org> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5298 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'payloads/libpayload/libc')
-rw-r--r--payloads/libpayload/libc/Makefile.inc7
-rw-r--r--payloads/libpayload/libc/args.c88
-rw-r--r--payloads/libpayload/libc/malloc.c64
-rw-r--r--payloads/libpayload/libc/string.c49
4 files changed, 198 insertions, 10 deletions
diff --git a/payloads/libpayload/libc/Makefile.inc b/payloads/libpayload/libc/Makefile.inc
index 82906c7132..3cd98c9b98 100644
--- a/payloads/libpayload/libc/Makefile.inc
+++ b/payloads/libpayload/libc/Makefile.inc
@@ -30,5 +30,10 @@
TARGETS-$(CONFIG_LIBC) += libc/malloc.o libc/printf.o libc/console.o libc/string.o
TARGETS-$(CONFIG_LIBC) += libc/memory.o libc/ctype.o libc/ipchecksum.o libc/lib.o
-TARGETS-$(CONFIG_LIBC) += libc/rand.o libc/time.o libc/lar.o libc/exec.o
+TARGETS-$(CONFIG_LIBC) += libc/rand.o libc/time.o libc/exec.o
TARGETS-$(CONFIG_LIBC) += libc/readline.o libc/getopt_long.o libc/sysinfo.o
+TARGETS-$(CONFIG_LIBC) += libc/args.o
+
+# should be moved to coreboot directory
+TARGETS-$(CONFIG_LAR) += libc/lar.o
+#TARGETS-$(CONFIG_CBFS) += libc/cbfs.o
diff --git a/payloads/libpayload/libc/args.c b/payloads/libpayload/libc/args.c
new file mode 100644
index 0000000000..8242d60bba
--- /dev/null
+++ b/payloads/libpayload/libc/args.c
@@ -0,0 +1,88 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/**
+ * @file libc/readline.c
+ * Simple readline implementation
+ */
+
+#include <libpayload.h>
+#include <getopt.h>
+
+/* We don't want to waste malloc on this, so we live with a small
+ * fixed size array
+ */
+char *string_argv[MAX_ARGS];
+int string_argc;
+
+/**
+ * Take a string and make char *argv[] and int argc from it.
+ *
+ * This function allows the user to use getopt on an arbitrary string.
+ *
+ * global variables valid after a successful run of string_to_args():
+ * string_argc pointer to number of arguments
+ * string_argv pointer to argument list.
+ *
+ * @param caller to be used as argv[0] (may be NULL to ignore)
+ * @param string to process
+ * @return 0 if no error occured.
+ */
+int string_to_args(char *caller, char *string)
+{
+ int i = 0;
+
+ if (caller)
+ string_argv[i++] = caller;
+
+ if (*string)
+ string_argv[i++] = string;
+
+ /* Terminate if the string ends */
+ while (string && *string) {
+ /* whitespace occured? */
+ if ((*string == ' ') || (*string == '\t')) {
+ /* skip all whitespace (and null it) */
+ while (*string == ' ' || *string == '\t')
+ *string++ = 0;
+ /* if our ugly static array is big enough, store
+ * argument to string_argv[]
+ */
+ if (i < MAX_ARGS)
+ string_argv[i++] = string;
+ }
+ string++;
+ }
+
+ /* prevent array from overflowing */
+ string_argc = (i <= MAX_ARGS) ? i : MAX_ARGS;
+
+ /* and return whether there was an overflow */
+ return (i <= MAX_ARGS) ? 0 : 1;
+}
diff --git a/payloads/libpayload/libc/malloc.c b/payloads/libpayload/libc/malloc.c
index 28b0974752..9e1dd2e575 100644
--- a/payloads/libpayload/libc/malloc.c
+++ b/payloads/libpayload/libc/malloc.c
@@ -2,6 +2,7 @@
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008-2010 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -38,6 +39,7 @@
* your buffers, kids!).
*/
+#define IN_MALLOC_C
#include <libpayload.h>
extern char _heap, _eheap; /* Defined in the ldscript. */
@@ -66,11 +68,21 @@ typedef unsigned int hdrtype_t;
static int free_aligned(void* addr);
void print_malloc_map(void);
+#ifdef CONFIG_DEBUG_MALLOC
+static int heap_initialized = 0;
+static int minimal_free = 0;
+#endif
+
static void setup(void)
{
int size = (unsigned int)(&_eheap - &_heap) - HDRSIZE;
*((hdrtype_t *) hstart) = FREE_BLOCK(size);
+
+#ifdef CONFIG_DEBUG_MALLOC
+ heap_initialized = 1;
+ minimal_free = size;
+#endif
}
static void *alloc(int len)
@@ -94,7 +106,9 @@ static void *alloc(int len)
int size = SIZE(header);
if (!HAS_MAGIC(header) || size == 0) {
- printf("memory allocator panic.\n");
+ printf("memory allocator panic. (%s%s)\n",
+ !HAS_MAGIC(header) ? " no magic " : "",
+ size == 0 ? " size=0 " : "");
halt();
}
@@ -268,9 +282,16 @@ struct align_region_t
static struct align_region_t* align_regions = 0;
-static struct align_region_t *allocate_region(struct align_region_t *old_first, int alignment, int num_elements)
+static struct align_region_t *allocate_region(int alignment, int num_elements)
{
- struct align_region_t *new_region = malloc(sizeof(struct align_region_t));
+ struct align_region_t *new_region;
+#ifdef CONFIG_DEBUG_MALLOC
+ printf("%s(old align_regions=%p, alignment=%u, num_elements=%u)\n",
+ __func__, align_regions, alignment, num_elements);
+#endif
+
+ new_region = malloc(sizeof(struct align_region_t));
+
if (!new_region)
return NULL;
new_region->alignment = alignment;
@@ -282,8 +303,9 @@ static struct align_region_t *allocate_region(struct align_region_t *old_first,
new_region->start_data = (void*)((u32)(new_region->start + num_elements + alignment - 1) & (~(alignment-1)));
new_region->size = num_elements * alignment;
new_region->free = num_elements;
- new_region->next = old_first;
+ new_region->next = align_regions;
memset(new_region->start, 0, num_elements);
+ align_regions = new_region;
return new_region;
}
@@ -325,15 +347,29 @@ look_further:
{
if ((reg->alignment == align) && (reg->free >= (size + align - 1)/align))
{
+#ifdef CONFIG_DEBUG_MALLOC
+ printf(" found memalign region. %x free, %x required\n", reg->free, (size + align - 1)/align);
+#endif
break;
}
reg = reg->next;
}
if (reg == 0)
{
- align_regions = allocate_region(align_regions, align, (size/align<99)?100:((size/align)+1));
- reg = align_regions;
+#ifdef CONFIG_DEBUG_MALLOC
+ printf(" need to allocate a new memalign region\n");
+#endif
+ /* get align regions */
+ reg = allocate_region(align, (size<1024)?(1024/align):(((size-1)/align)+1));
+#ifdef CONFIG_DEBUG_MALLOC
+ printf(" ... returned %p\n", align_regions);
+#endif
+ }
+ if (reg == 0) {
+ /* Nothing available. */
+ return (void *)NULL;
}
+
int i, count = 0, target = (size+align-1)/align;
for (i = 0; i < (reg->size/align); i++)
{
@@ -358,16 +394,20 @@ look_further:
}
/* This is for debugging purposes. */
-#ifdef TEST
+#ifdef CONFIG_DEBUG_MALLOC
void print_malloc_map(void)
{
void *ptr = hstart;
+ int free_memory = 0;
while (ptr < hend) {
hdrtype_t hdr = *((hdrtype_t *) ptr);
if (!HAS_MAGIC(hdr)) {
- printf("Poisoned magic - we're toast\n");
+ if (heap_initialized)
+ printf("Poisoned magic - we're toast\n");
+ else
+ printf("No magic yet - going to initialize\n");
break;
}
@@ -377,7 +417,15 @@ void print_malloc_map(void)
(unsigned int)(ptr - hstart),
hdr & FLAG_FREE ? "FREE" : "USED", SIZE(hdr));
+ if (hdr & FLAG_FREE)
+ free_memory += SIZE(hdr);
+
ptr += HDRSIZE + SIZE(hdr);
}
+
+ if (free_memory && (minimal_free > free_memory))
+ minimal_free = free_memory;
+ printf("Maximum memory consumption: %d bytes",
+ (unsigned int)(&_eheap - &_heap) - HDRSIZE - minimal_free);
}
#endif
diff --git a/payloads/libpayload/libc/string.c b/payloads/libpayload/libc/string.c
index 81cce26a61..b69fab6815 100644
--- a/payloads/libpayload/libc/string.c
+++ b/payloads/libpayload/libc/string.c
@@ -171,7 +171,9 @@ char *strcpy(char *d, const char *s)
char *strncat(char *d, const char *s, size_t n)
{
char *p = d + strlen(d);
- int max = n > strlen(s) ? strlen(s) : n;
+ int sl = strlen(s);
+ int max = n > sl ? sl : n;
+ // int max = n > strlen(s) ? strlen(s) : n;
int i;
for (i = 0; i < max; i++)
@@ -182,6 +184,30 @@ char *strncat(char *d, const char *s, size_t n)
}
/**
+ * Concatenates two strings with a maximum length.
+ *
+ * @param d The destination string.
+ * @param s The source string.
+ * @param n Not more than n characters from s will be appended to d.
+ * @return A pointer to the destination string.
+ */
+size_t strlcat(char *d, const char *s, size_t n)
+{
+ int sl = strlen(s);
+ int dl = strlen(d);
+
+ char *p = d + dl;
+ int max = n > (sl + dl) ? sl : (n - dl - 1);
+ int i;
+
+ for (i = 0; i < max; i++)
+ p[i] = s[i];
+
+ p[i] = '\0';
+ return max;
+}
+
+/**
* Find a character in a string.
*
* @param s The string.
@@ -202,6 +228,27 @@ char *strchr(const char *s, int c)
}
/**
+ * Find a character in a string.
+ *
+ * @param s The string.
+ * @param c The character.
+ * @return A pointer to the last occurence of the character in the
+ * string, or NULL if the character was not encountered within the string.
+ */
+
+char *strrchr(const char *s, int c)
+{
+ char *p = (char *)s + strlen(s);
+
+ for (; p >= s; p--) {
+ if (*p == c)
+ return p;
+ }
+
+ return NULL;
+}
+
+/**
* Duplicate a string.
*
* @param s The string to duplicate.