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Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [sys/] [sysmec/] [sbrk.c] - Diff between revs 148 and 158

Rev 148	Rev 158
`#include <_ansi.h>`	`#include <_ansi.h>`
`#include <sys/types.h>`	`#include <sys/types.h>`
`#include <sys/stat.h>`	`#include <sys/stat.h>`
`#include "sys/syscall.h"`	`#include "sys/syscall.h"`

`int errno;`	`int errno;`

`int __trap0 ();`	`int __trap0 ();`

`#define TRAP0(f, p1, p2, p3) __trap0(f, (p1), (p2), (p3))`	`#define TRAP0(f, p1, p2, p3) __trap0(f, (p1), (p2), (p3))`

`caddr_t`	`caddr_t`
`_sbrk (size_t incr)`	`_sbrk (size_t incr)`
`{`	`{`
`extern char end; /* Defined by the linker */`	`extern char end; /* Defined by the linker */`
`static char *heap_end;`	`static char *heap_end;`
`char *prev_heap_end;`	`char *prev_heap_end;`
`#if 0`	`#if 0`
`char sp = (char )stack_ptr;`	`char sp = (char )stack_ptr;`
`#else`	`#else`
`char sp = (char )&sp;`	`char sp = (char )&sp;`
`#endif`	`#endif`

`if (heap_end == 0)`	`if (heap_end == 0)`
`{`	`{`
`heap_end = &end;`	`heap_end = &end;`
`}`	`}`
`prev_heap_end = heap_end;`	`prev_heap_end = heap_end;`
`if (heap_end + incr > sp)`	`if (heap_end + incr > sp)`
`{`	`{`
`_write (1, "Heap and stack collision\n", 25);`	`_write (1, "Heap and stack collision\n", 25);`
`abort ();`	`abort ();`
`}`	`}`
`heap_end += incr;`	`heap_end += incr;`
`return (caddr_t) prev_heap_end;`	`return (caddr_t) prev_heap_end;`
`}`	`}`