Subversion Repositories openrisc_me

! Set errno.

! This function is called by all the syscall stubs.

!

! FIXME: We assume errno is the first member of struct _reent.

! Not sure what to do about this.

#include "syscallasm.h"

        DATA_SECTION

        ALIGN (4)

        GLOBAL (ASM_SYMBOL (errno))     ! FIXME: ASM_PRIVATE_SYMBOL ?

ASM_SYMBOL (errno):

        WORD (0)

        TEXT_SECTION

        ALIGN (4)

        GLOBAL (ASM_PRIVATE_SYMBOL (cerror))

ASM_PRIVATE_SYMBOL (cerror):

        sethi   %hi (ASM_SYMBOL (errno)),%g1

        st      %o0,[%g1+%lo (ASM_SYMBOL (errno))]

        jmpl    %o7+8,%g0

        mov     -1,%o0

        GLOBAL (ASM_PRIVATE_SYMBOL (cerror_r))

ASM_PRIVATE_SYMBOL (cerror_r):

        st      %o0,[%o1]

        jmpl    %o7+8,%g0

        mov     -1,%o0

! Since all system calls need this file, we put various state globals

! here as well.

        DATA_SECTION

! CURBRK contains the current top of allocated space.

! END is a private symbol in svr4, but a public one in sunos4.

! FIXME: CURBRK is 4 bytes for now.

        ALIGN (4)

        GLOBAL (ASM_PRIVATE_SYMBOL (curbrk))

ASM_PRIVATE_SYMBOL (curbrk):

#ifdef SVR4

        WORD (ASM_PRIVATE_SYMBOL (end))

#else

        WORD (ASM_SYMBOL (end))

#endif