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Merge pull request #2073 from cesanta/sbrk

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Fix _sbrk()
This commit is contained in:
Sergey Lyubka 2023-02-17 14:00:32 +00:00 committed by GitHub
commit b9424e4c21
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GPG Key ID: 4AEE18F83AFDEB23
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;
}