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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [libgloss/] [m32r/] [sbrk.c] - Rev 561
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#include <sys/types.h> #include <sys/stat.h> #include "syscall.h" #include "eit.h" caddr_t _sbrk (int incr) { /* `_end' is defined in the linker script. We must handle it carefully as we don't want the compiler to think it lives in the small data area. Use medium model to ensure 32 bit addressability. */ extern char _end __attribute__ ((__model__(__medium__))); static char *heap_end; char *prev_heap_end; char *sp = (char *)&sp; if (heap_end == 0) { heap_end = &_end; } prev_heap_end = heap_end; if (heap_end > sp) { _write (1, "Heap and stack collision\n", 25); #if 0 /* Calling abort brings in the signal handling code. */ abort (); #else exit (1); #endif } heap_end += incr; return (caddr_t) prev_heap_end; }
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