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Annotation of 41BSD/libc/sys/reset.s, revision 1.1.1.1

1.1       root        1: # C library -- reset, setexit
                      2: 
                      3: #      reset(x)
                      4: # will generate a "return" from
                      5: # the last call to
                      6: #      setexit()
                      7: # by restoring r6 - r12, ap, fp
                      8: # and doing a return.
                      9: # The returned value is x; on the original
                     10: # call the returned value is 0.
                     11: #
                     12: # useful for going back to the main loop
                     13: # after a horrible error in a lowlevel
                     14: # routine.
                     15: 
                     16: .globl _setexit
                     17: .globl _reset
                     18: 
                     19:        .align  1
                     20: _setexit:
                     21:        .word   0x0000
                     22:        movab   setsav,r0
                     23:        movq    r6,(r0)+
                     24:        movq    r8,(r0)+
                     25:        movq    r10,(r0)+
                     26:        movq    8(fp),(r0)+             # ap, fp
                     27:        movab   4(ap),(r0)+             # sp
                     28:        movl    16(fp),(r0)             # pc
                     29:        clrl    r0
                     30:        ret
                     31: 
                     32:        .align  1
                     33: _reset:
                     34:        .word   0x0000
                     35:        movl    4(ap),r0        # returned value
                     36:        movab   setsav,r1
                     37:        movq    (r1)+,r6
                     38:        movq    (r1)+,r8
                     39:        movq    (r1)+,r10
                     40:        movq    (r1)+,r12
                     41:        movl    (r1)+,sp
                     42:        jmp     *(r1)
                     43: 
                     44:        .data
                     45: setsav:        .space  10*4

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