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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [sys/] [sparc64/] [sigsetjmp.S] - Rev 158

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! This file is called sigsetjmp.s because that is what V8 uses.
! We do not define sigsetjmp() or setlongjmp() yet.
! Solaris has setjmp/longjmp in setjmp.o.  Move this stuff there.

#include <sys/syscallasm.h>

        TEXT_SECTION
        ALIGN (4)

#ifdef __svr4__

        GLOBAL (ASM_SYMBOL (setjmp))
        .proc   04
ASM_SYMBOL (setjmp):

        clr     [%o0]
        stx     %sp,[%o0+8]
        add     %o7,8,%g1
        stx     %g1,[%o0+16]
        retl 
        mov     %g0,%o0

        GLOBAL (ASM_SYMBOL (longjmp))
        .proc   04
ASM_SYMBOL (longjmp):

        flushw                          ! flush register windows
        sub     %sp,136,%sp
        ldx     [%o0+8],%fp
        ldx     [%o0+16],%g1
        tst     %o1
        bne     L0
        sub     %g1,8,%o7
        mov     1,%o1
L0:
        retl 
        restore %o1,0,%o0

#else

        GLOBAL (ASM_SYMBOL (setjmp))
        .proc   04
ASM_SYMBOL (setjmp):
        save    %sp,-136,%sp
        or      %g0,%g0,%o0             ! %o0 = 0
        or      %g0,0x6d,%g1            ! %g1 = 0x6d (syscall number)
        ta      SYSCALL_TRAP
        stw     %o0,[%i0+4]             ! save result at [%i0+4] (sigmask?)
        add     %fp,-8,%o1              ! %o1 -> tmp 8 byte buffer
        or      %g0,%g0,%o0             ! %o0 = 0
        or      %g0,0x70,%g1            ! %g1 = 0x70 (syscall number)
        ta      SYSCALL_TRAP
        lduw    [%fp-4],%g1             ! %g1 = onsstack?
        stw     %fp,[%i0+8]             ! save %fp at [%i0+8]
        stw     %g1,[%i0+0]             ! save ? at [%i0+8]
        add     %i7,8,%g1               ! %g1 = return address
        stw     %g1,[%i0+12]            ! save return address at [%i0+12]
        add     %g1,4,%g1               ! %g1 = nPC
        stw     %g1,[%i0+16]            ! save nPC at [%i0+16]
        stw     %g0,[%i0+20]
        stw     %g0,[%i0+24]
        stw     %g0,[%i0+32]
        jmpl    %i7+8,%g0
        restore %g0,0,%o0

        GLOBAL (ASM_SYMBOL (longjmp))
        .proc   04
ASM_SYMBOL (longjmp):
        orcc    %g0,%o1,%g0             ! return val == 0 ?
        be,a    L1                      ! branch if 0
        or      %g0,1,%o1               ! make it 1 (executed if branch taken)
L1:
        or      %g0,0x8b,%g1            ! set syscall 0x8b
        stw     %o1,[%o0+28]            ! save return val for restoration
        ta      SYSCALL_TRAP

#endif /* ! __svr4__ */

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