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Annotation of researchv9/libc/nsys/fork.s, revision 1.1.1.1

1.1       root        1: # C library -- fork
                      2: 
                      3: # pid = fork();
                      4: #
                      5: # r1 == 0 in parent process, r1 == 1 in child process.
                      6: # r0 == pid of child in parent, r0 == pid of parent in child.
                      7: 
                      8:        fork = 2
                      9: .globl _fork
                     10: .globl _vfork
                     11: 
                     12: _vfork:
                     13: _fork:
                     14:        linkw   a6,#0
                     15:        pea     fork
                     16:        trap    #0
                     17:        bcc             forkok
                     18:        jmp             cerror
                     19: forkok:
                     20:        andl    #1,d1
                     21:        beq     parent
                     22:        clrl    d0              | signify child
                     23: parent:
                     24:        unlk    a6
                     25:        rts

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