|
Last change
on this file since 673 was
444,
checked in by satin@…, 6 years ago
|
|
add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
|
File size:
529 bytes
|
| Line | |
|---|
| 1 | #include <_ansi.h> |
|---|
| 2 | #include <sys/types.h> |
|---|
| 3 | #include <sys/stat.h> |
|---|
| 4 | #include "trap.h" |
|---|
| 5 | |
|---|
| 6 | |
|---|
| 7 | caddr_t |
|---|
| 8 | _sbrk (size_t incr) |
|---|
| 9 | { |
|---|
| 10 | extern char end; /* Defined by the linker */ |
|---|
| 11 | static char *heap_end; |
|---|
| 12 | char *prev_heap_end; |
|---|
| 13 | #if 0 |
|---|
| 14 | char *sp = (char *)stack_ptr; |
|---|
| 15 | #else |
|---|
| 16 | char *sp = (char *)&sp; |
|---|
| 17 | #endif |
|---|
| 18 | |
|---|
| 19 | if (heap_end == 0) |
|---|
| 20 | { |
|---|
| 21 | heap_end = &end; |
|---|
| 22 | } |
|---|
| 23 | prev_heap_end = heap_end; |
|---|
| 24 | heap_end += incr; |
|---|
| 25 | if (heap_end > sp) |
|---|
| 26 | { |
|---|
| 27 | _write (1, "Heap and stack collision\n", 25); |
|---|
| 28 | abort (); |
|---|
| 29 | } |
|---|
| 30 | return (caddr_t) prev_heap_end; |
|---|
| 31 | } |
|---|
Note: See
TracBrowser
for help on using the repository browser.
