diff options
Diffstat (limited to 'mdk-stage1/dietlibc/sparc/clone.S')
| -rw-r--r-- | mdk-stage1/dietlibc/sparc/clone.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/sparc/clone.S b/mdk-stage1/dietlibc/sparc/clone.S new file mode 100644 index 000000000..58b438249 --- /dev/null +++ b/mdk-stage1/dietlibc/sparc/clone.S @@ -0,0 +1,45 @@ +#include <asm/errno.h> +#include <asm/unistd.h> + +.text +.align 4 +.weak clone +clone: +.global __clone +__clone: + save %sp, -96, %sp + + tst %i0 /* check for function pointer */ + be .Lerror + tst %i1 /* check for stack pointer */ + be .Lerror + nop + + mov %i1, %o1 /* child-stack */ + mov %i2, %o0 /* clone-flags */ + mov __NR_clone, %g1 + ta 0x10 /* syscall: clone */ + bcs .Lerror + + tst %o1 + bne .Lstart /* we are the child :) */ + nop + mov %o0, %i0 /* return child pid */ + ret + restore + +.Lerror: + call __errno_location + nop + mov EINVAL, %l0 + st %l0, [%o0] + ret + restore %g0, -1, %o0 + +.Lstart: + call %i0 /* call child-function */ + mov %i3, %o0 /* put arg in the right place for the child */ + + call _exit /* child returned */ + nop + |