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Check the user-overridable defines MEMP_SANITY_REGION_BEFORE and MEMP_SANITY_REGION_AFTER for aligment.

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This commit is contained in:
goldsimon 2007-05-18 20:25:27 +00:00
parent a4f4e6e71d
commit 018efc9631
1 changed files with 28 additions and 16 deletions
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44
src/core/memp.c
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@ -66,16 +66,28 @@ static struct memp *memp_tab[MEMP_MAX];
/* If MEMP_OVERFLOW_CHECK is >= 2, on every call to memp_malloc or memp_free,
* every single element in each pool is checked!
* This is VERY SLOW but also very helpful. */
/* MEMP_SANITY_REGION_BEFORE and MEMP_SANITY_REGION_AFTER can be overridden in
* lwipopts.h to change the amount reserved for checking. */
#ifndef MEMP_SANITY_REGION_BEFORE
#define MEMP_SANITY_REGION_BEFORE MEM_ALIGN_SIZE(16)
#define MEMP_SANITY_REGION_BEFORE 16
#endif /* MEMP_SANITY_REGION_BEFORE*/
#if MEMP_SANITY_REGION_BEFORE > 0
#define MEMP_SANITY_REGION_BEFORE_ALIGNED MEM_ALIGN_SIZE(MEMP_SANITY_REGION_BEFORE)
#else
#define MEMP_SANITY_REGION_BEFORE_ALIGNED 0
#endif /* MEMP_SANITY_REGION_BEFORE*/
#ifndef MEMP_SANITY_REGION_AFTER
#define MEMP_SANITY_REGION_AFTER MEM_ALIGN_SIZE(16)
#define MEMP_SANITY_REGION_AFTER 16
#endif /* MEMP_SANITY_REGION_AFTER*/
#if MEMP_SANITY_REGION_AFTER > 0
#define MEMP_SANITY_REGION_AFTER_ALIGNED MEM_ALIGN_SIZE(MEMP_SANITY_REGION_AFTER)
#else
#define MEMP_SANITY_REGION_AFTER_ALIGNED 0
#endif /* MEMP_SANITY_REGION_AFTER*/
/* MEMP_SIZE: save space for struct memp and for sanity check */
#define MEMP_SIZE (MEM_ALIGN_SIZE(sizeof(struct memp)) + MEMP_SANITY_REGION_BEFORE)
#define MEMP_ALIGN_SIZE(x) (MEM_ALIGN_SIZE(x) + MEMP_SANITY_REGION_AFTER)
#define MEMP_SIZE (MEM_ALIGN_SIZE(sizeof(struct memp)) + MEMP_SANITY_REGION_BEFORE_ALIGNED)
#define MEMP_ALIGN_SIZE(x) (MEM_ALIGN_SIZE(x) + MEMP_SANITY_REGION_AFTER_ALIGNED)
#else /* MEMP_OVERFLOW_CHECK */
@ -168,17 +180,17 @@ memp_overflow_check_single(struct memp *p, u16_t memp_size)
{
u16_t k;
u8_t *m;
#if MEMP_SANITY_REGION_BEFORE > 0
m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE;
for (k = 0; k < MEMP_SANITY_REGION_BEFORE; k++) {
#if MEMP_SANITY_REGION_BEFORE_ALIGNED > 0
m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE_ALIGNED;
for (k = 0; k < MEMP_SANITY_REGION_BEFORE_ALIGNED; k++) {
if (m[k] != 0xcd) {
LWIP_ASSERT("detected memp underflow!", 0);
}
}
#endif
#if MEMP_SANITY_REGION_AFTER > 0
m = (u8_t*)p + MEMP_SIZE + memp_size - MEMP_SANITY_REGION_AFTER;
for (k = 0; k < MEMP_SANITY_REGION_AFTER; k++) {
#if MEMP_SANITY_REGION_AFTER_ALIGNED > 0
m = (u8_t*)p + MEMP_SIZE + memp_size - MEMP_SANITY_REGION_AFTER_ALIGNED;
for (k = 0; k < MEMP_SANITY_REGION_AFTER_ALIGNED; k++) {
if (m[k] != 0xcd) {
LWIP_ASSERT("detected memp overflow!", 0);
}
@ -211,13 +223,13 @@ memp_overflow_init(void)
for (i = 0; i < MEMP_MAX; ++i) {
p = p;
for (j = 0; j < memp_num[i]; ++j) {
#if MEMP_SANITY_REGION_BEFORE > 0
m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE;
memset(m, 0xcd, MEMP_SANITY_REGION_BEFORE);
#if MEMP_SANITY_REGION_BEFORE_ALIGNED > 0
m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE_ALIGNED;
memset(m, 0xcd, MEMP_SANITY_REGION_BEFORE_ALIGNED);
#endif
#if MEMP_SANITY_REGION_AFTER > 0
m = (u8_t*)p + MEMP_SIZE + memp_sizes[i] - MEMP_SANITY_REGION_AFTER;
memset(m, 0xcd, MEMP_SANITY_REGION_AFTER);
#if MEMP_SANITY_REGION_AFTER_ALIGNED > 0
m = (u8_t*)p + MEMP_SIZE + memp_sizes[i] - MEMP_SANITY_REGION_AFTER_ALIGNED;
memset(m, 0xcd, MEMP_SANITY_REGION_AFTER_ALIGNED);
#endif
p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i]);
}