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Add heap limit

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This commit is contained in:
Sergio R. Caprile 2023-02-16 15:01:10 -03:00
parent 8aa26fb2cd
commit dadb05e022
5 changed files with 15 additions and 0 deletions
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3
examples/stm32/nucleo-f429zi-baremetal/syscalls.c
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@ -12,8 +12,11 @@ void *_sbrk(int incr) {
extern char _end;
static unsigned char *heap = NULL;
unsigned char *prev_heap;
unsigned char x = 0, *heap_end = (unsigned char *)((size_t) &x - 512);
(void) x;
if (heap == NULL) heap = (unsigned char *) &_end;
prev_heap = heap;
if (heap + incr > heap_end) return (void *) -1;
heap += incr;
return prev_heap;
}

3
examples/stm32/nucleo-f429zi-rndis/syscalls.c
View File

@ -12,8 +12,11 @@ void *_sbrk(int incr) {
extern char _end;
static unsigned char *heap = NULL;
unsigned char *prev_heap;
unsigned char x = 0, *heap_end = (unsigned char *)((size_t) &x - 512);
(void) x;
if (heap == NULL) heap = (unsigned char *) &_end;
prev_heap = heap;
if (heap + incr > heap_end) return (void *) -1;
heap += incr;
return prev_heap;
}

3
examples/stm32/nucleo-f746zg-baremetal/syscalls.c
View File

@ -12,8 +12,11 @@ void *_sbrk(int incr) {
extern char _end;
static unsigned char *heap = NULL;
unsigned char *prev_heap;
unsigned char x = 0, *heap_end = (unsigned char *)((size_t) &x - 512);
(void) x;
if (heap == NULL) heap = (unsigned char *) &_end;
prev_heap = heap;
if (heap + incr > heap_end) return (void *) -1;
heap += incr;
return prev_heap;
}

3
examples/stm32/nucleo-f746zg-rndis/syscalls.c
View File

@ -12,8 +12,11 @@ void *_sbrk(int incr) {
extern char _end;
static unsigned char *heap = NULL;
unsigned char *prev_heap;
unsigned char x = 0, *heap_end = (unsigned char *)((size_t) &x - 512);
(void) x;
if (heap == NULL) heap = (unsigned char *) &_end;
prev_heap = heap;
if (heap + incr > heap_end) return (void *) -1;
heap += incr;
return prev_heap;
}

3
examples/stm32/nucleo-h743zi-baremetal/syscalls.c
View File

@ -12,8 +12,11 @@ void *_sbrk(int incr) {
extern char _end;
static unsigned char *heap = NULL;
unsigned char *prev_heap;
unsigned char x = 0, *heap_end = (unsigned char *)((size_t) &x - 512);
(void) x;
if (heap == NULL) heap = (unsigned char *) &_end;
prev_heap = heap;
if (heap + incr > heap_end) return (void *) -1;
heap += incr;
return prev_heap;
}