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Annotation of researchv9/libc/sys/setjmp.s, revision 1.1

1.1     ! root        1: # C library -- setjmp, longjmp
        !             2: #
        !             3: #      longjmp(env, val)
        !             4: #              will generate a "return(val)" from the last call to
        !             5: #      setjmp(env)
        !             6: #              by restoring a2 - a7, d2 - d7, pc, and sr from env
        !             7: #              and doing a return
        !             8:        .text
        !             9:        .globl _setjmp
        !            10:        .globl _longjmp
        !            11: 
        !            12: _setjmp:
        !            13:        movl    sp@+,a1                 | save pc and restore stack
        !            14:        movl    sp@,a0
        !            15:        moveml  #0xfcfc,a0@             | a2 - a7, d2 - d7
        !            16:        movl    a1,a0@(48)              | pc
        !            17:        clrl    d0                      | return 0
        !            18:        jmp     a1@
        !            19: 
        !            20: _longjmp:
        !            21:        movl    sp@(4),a0
        !            22:        movl    sp@(8),d0               | the return value
        !            23:        movl    a0@(48),a1              | return pc
        !            24:        moveml  a0@,#0xfcfc             | restore registers
        !            25:        jmp     a1@

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