423 lines
9.4 KiB
Plaintext
423 lines
9.4 KiB
Plaintext
.define e_memflt
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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.sect .text
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e_array: cl -(sp) ; bra error
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e_range: mov #0x1,-(sp) ; bra error
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e_set: mov #0x2,-(sp) ; bra error
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e_iovfl: mov #0x3,-(sp) ; bra error
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e_fovfl: mov #0x4,-(sp) ; bra error
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e_funfl: mov #0x5,-(sp) ; bra error
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e_idivz: mov #0x6,-(sp) ; bra error
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e_fdivz: mov #0x7,-(sp) ; bra error
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e_iund: mov #0x8,-(sp) ; bra error
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e_fund: mov #0x9,-(sp) ; bra error
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e_conv: mov #0xA,-(sp) ; bra error
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e_stack: mov #0x10,-(sp) ; bra fatal
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e_heap: mov #0x11,-(sp) ; bra fatal
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e_illins: mov #0x12,-(sp) ; bra fatal
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e_oddz: mov #0x13,-(sp) ; bra fatal
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e_case: mov #0x11,-(sp) ; bra fatal
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e_memflt: mov #0x15,-(sp) ; bra fatal
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e_badptr: mov #0x16,-(sp) ; bra fatal
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e_badpc: mov #0x17,-(sp) ; bra fatal
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e_badlae: mov #0x18,-(sp) ; bra error
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e_badmon: mov #0x19,-(sp) ; bra error
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e_badlin: mov #0x1A,-(sp) ; bra error
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e_badgto: mov #0x1B,-(sp) ; bra error
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flnim: mov #0xB,-(sp) ; bra error
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no8bar: mov #0xC,-(sp) ; bra error
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!---------------------------------------------------------------------------
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! ERRORS AND TRAPS
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!----------------------------------------------------------------------------
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fatal: clr.l -(sp) !dummy return address
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pea hlt_z !RETURN FROM FATAL HALTS
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mov 8(sp),-(sp)
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error: movem.l d0/d1/d2/d3/d4/d5/d6/d7/a0/a1/a2/a3/a4/a5/a6,-(sp)
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mov 60(sp),d0 !ERROR NUMBER IN d0
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lea retsize,a5
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move.l #16,d1
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1: move.w -(a5),-(sp)
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dbra d1,1b
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cmp.w #0xB,d0
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bge 0f !FATAL ERROR , START ERROR HANDLING
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move.l #0x1,d1
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asl.l d0,d1
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move.w ignmask,d2
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not.w d2
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and.w d2,d1
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bne 0f
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move.l #16,d1
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lea retsize,a5
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1: move.w (sp)+,(a5)+
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dbra d1,1b
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movem.l (sp)+,d0/d1/d2/d3/d4/d5/d6/d7/a0/a1/a2/a3/a4/a5/a6
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add.l wrd,sp !REMOVE ERROR NUMBER
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rts
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0: move.l uerrorp,a0
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cmp.l #-1,a0
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beq notrap
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mov d0,-(sp)
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move.l uerrorp,-(sp)
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move.l #-1,uerrorp !USER MUST SET TRAP AGAIN
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bra cai_z
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!-----------------------------------------------------------------------------
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rtt_z: move.l a2,sp
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add.l #0x10,sp !REMOVE RETURN STATUS BLOCK
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add.l wrd,sp !REMOVE ERROR NUMBER
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move.l #16,d0
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lea retsize,a5
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1: move.w (sp)+,(a5)+
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dbra d0,1b
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movem.l (sp)+,d0/d1/d2/d3/d4/d5/d6/d7/a0/a1/a2/a3/a4/a5/a6
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add.l wrd,sp
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rts
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trp_z: sub.l #4,sp
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mov 4(sp),(sp) !COPY ERROR NUMBER
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move.l a4,word(sp) !RETURN ADDRESS TO MAIN LOOP
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bra error
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sig_z: move.l (sp),d0
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move.l uerrorp,(sp)
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move.l d0,uerrorp
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jmp (a4)
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.sect .data
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uerrorp: .data4 0x-1
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.sect .text
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!-----------------------------------------------------------------------------
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!FIRST INFORMATION ABOUT THE KIND OF THE ERROR
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notrap: add.l #38,sp
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movem.l (sp)+,d1/d2/d3/d4/d5/d6/d7/a0/a1/a2/a3/a4/a5/a6
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notrap1: comp #29,d0 !ERROR NUMBER STILL IN d0
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blt 1f !START PRINTING ERROR
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extend d0 !NUMBER.
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move.l d0,d1
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lea erno+5,a0
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bsr itoa
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move.l #609,d0
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bra 2f
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1: mulu #21,d0
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2: lea emerr,a0
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move.l #20,-(sp)
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pea 0(a0,d0)
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mov #2,-(sp) !STANDARD ERROR
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bsr _write
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add.l wrd+4,sp
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!NEXT INFORMATION ABOUT THE LINE NUMBER
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move.l (a6),d1
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lea emess+14,a0
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bsr itoa
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move.l #30,-(sp)
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pea emess
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mov #2,-(sp)
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bsr _write
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add.l wrd+4,sp
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!NOW INFORMATION ABOUT THE FILES
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2: move.l 4(a6),a0
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cmp.l #0,a0
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beq 5f
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move.l a0,a5
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sub.l #4,sp
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move.l a5,-(sp)
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move.l #-1,d0
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1: add.l #1,d0
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tst.b (a5)+
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bne 1b
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move.l d0,4(sp)
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mov #2,-(sp)
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bsr _write
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add.l wrd+4,sp
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5: move.w #0x0A,-(sp)
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move.l #2,-(sp)
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pea 4(sp)
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mov #2,-(sp)
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bsr _write
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add.l wrd+6,sp
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comp #0xB,(sp)
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beq 1f
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move.l #-1,argc
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clr.l -(sp) !dummy return address
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bra hlt_z
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1: add.l wrd,sp
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jmp (a4)
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!---------------------------------------------------------------------------
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! EXIT HANDLING
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!--------------------------------------------------------------------------
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hlt_z: add.l #4,sp !remove return address
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#if prof
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.sect .data
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emprof: .asciz "em_profile\0"
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.align 2
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.sect .bss
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profile: .space 4
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ltime: .space 4
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profsiz: .space 4
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.sect .text
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tst.l firstp
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beq lhalt
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mov #0x1B6,-(sp)
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pea emprof
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bsr _creat
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testen (sp)+
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mov (sp)+,d0
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move.l ltime,a4 !a4 points at bottem of prof table
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bsr tabprint
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#endif
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#if flow
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tst.l firstp
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beq lhalt
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mov #0x1B6,-(sp)
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pea emflow
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bsr _creat
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testen (sp)+
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mov (sp)+,d0
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move.l flowsiz,-(sp)
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move.l lflow,-(sp)
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mov d0,-(sp)
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bsr _write
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add.l wrd+4,sp
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.sect .data
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emflow: .asciz "em_flow\0"
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.align 2
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.sect .bss
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lflow: .space 4
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flowsiz: .space 4
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.sect .text
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#endif
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#if count
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tst.l firstp
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beq lhalt
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mov #0x1B6,-(sp)
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pea emcount
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bsr _creat
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testen (sp)+
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mov (sp)+,d0
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move.l lcount,a4
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bsr tabprint
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.sect .data
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emcount: .asciz "em_count\0"
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.align 2
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.sect .bss
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lcount: .space 4
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countsiz: .space 4
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#endif
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#if opfreq
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.sect .data
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emopf: .asciz "em_opfreq\0"
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.align
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.sect .bss
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counttab: .space 1884
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.sect .text
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mov #0x1B6,-(sp)
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pea emopf
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bsr _creat
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testen (sp)+
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mov (sp)+,d0
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move.l #1884,-(sp)
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pea counttab
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mov d0,-(sp)
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bsr _write
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add.l wrd+4,sp
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#endif
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#if count+flow+prof
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.sect .bss
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countfld: .space 4 !COUNT NUMBER - NUMBER OF LINE 1 OF PROC
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countptr: .space 4 !COUNT NUMBER OF CURRENT LINE
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#endif
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lhalt:
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#if last
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.sect .text
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mov #0x1B6,-(sp)
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pea emlast
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bsr _creat
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testen (sp)+
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mov (sp)+,d6 !d6 contains file descriptor
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cmp.l #-1,linused-4 !test if buffer is fully used
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beq 0f
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bsr nexttab
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bra 1f
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0: lea lasttable,a5
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1: tst.l (a5)
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bne 2f !exists entry in table
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move.l #22,-(sp) !here case no lines processed
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pea mess1
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mov d6,-(sp)
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bsr _write
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add.l wrd+4,sp
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bra 9f
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2: move.l #7,-(sp) !announce new file name
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pea mess2
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mov d6,-(sp)
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bsr _write
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add.l wrd+4,sp
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move.l (a5),d7
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move.l d7,a0 !keep file pointer in d7
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clr.l (a5)+ !this will stop the printing
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move.l #-1,d1 !d1 will contain length of file name
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3: add.l #1,d1
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tst.b (a0)+
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bne 3b
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move.l d1,-(sp)
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move.l d7,-(sp)
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mov d6,-(sp)
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bsr _write
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add.l wrd+4,sp
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4: move.l (a5),d1 !next print line numbers
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lea mess3,a0
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bsr itoa
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move.l #12,-(sp)
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pea mess3
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mov d6,-(sp)
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bsr _write
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add.l wrd+4,sp
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bsr nexttab
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tst.l (a5) !in case 0 no more lines
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beq 9f
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cmp.l (a5),d7
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bne 2b !new file name
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clr.l (a5)+ !skip file name
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bra 4b !only new line
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9:
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.sect .data
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emlast: .asciz "em_last"
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mess1: .asciz "no line processed yet\n"
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mess2: .asciz "\nfile :"
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mess3: .asciz " \n"
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.align 2
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.sect .bss
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lasttable: .space 512
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linused: .space 4
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#endif
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.sect .text
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halt: bsr _exit
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.sect .data
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emerr:
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.asciz "ARRAY BOUND ERROR \n"
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.asciz "RANGE BOUND ERROR \n"
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.asciz "SET BOUND ERROR \n"
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.asciz "INTEGER OVERFLOW \n"
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.asciz "FLOATING OVERFLOW \n"
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.asciz "FLOATING UNDERFLOW \n"
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.asciz "INT. DIV. BY ZERO \n"
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.asciz "DIVIDE BY 0.0 \n"
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.asciz "UNDEFINED INTEGER \n"
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.asciz "UNDEFINED FLOAT \n"
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.asciz "CONVERSION ERROR \n"
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.asciz "NO FLOATING POINT \n"
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.asciz "NO 8 BYTE ARITH. \n"
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.asciz "NO LOAD FILE \n"
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.asciz "LOAD FILE ERROR \n"
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.asciz "PROGRAM TOO LARGE \n"
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.asciz "STACK OVERFLOW \n"
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.asciz "HEAP OVERFLOW \n"
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.asciz "ILLEGAL INSTRUCTION\n"
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.asciz "ILLEGAL SIZE ARG. \n"
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.asciz "CASE ERROR \n"
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.asciz "ADDRESS NON EX. MEM\n"
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.asciz "BAD POINTER USED \n"
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.asciz "PR COUNT. OUT RANGE\n"
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.asciz "BAD ARG. OF LAE \n"
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.asciz "BAD MONITOR CALL \n"
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.asciz "ARG OF LIN TOO HIGH\n"
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.asciz "GTO DESCR. ERROR \n"
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.asciz "BAD RETURN SIZE \n"
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erno:
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.asciz "ERRNO \n"
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emess:
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.asciz "ON SOURCE LINE OF\n"
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.align 2
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!-----------------------------------------------------------------------------
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! SUBROUTINES FOR THE INTERPRETOR
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!------------------------------------------------------------------------------
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.sect .text
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#if last
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nexttab: move.l linused,a5
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add.l #8,a5
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cmp.l #linused,a5 !top of buffer reached?
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bne 1f !if so back to bottom
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sub.l #512,a5
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1: move.l a5,linused
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rts
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#endif
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#if count+prof
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!SUBROUTINE FOR PRINTING TABLES . EXPECTS BOTTOM OF TABLE IN a4 AND FILE
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!DESCRIPTOR IN d0 .IN maxcount NUMBER OF 4 BYTE WORDS IN THE TABLE.
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.sect .text
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tabprint: mov d0,-(sp) !KEEP FILE DESCRIPTOR FOR WRITING
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lea buffer,a3
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move.l firstp,a5 !IN a5 POINTER TO CURRENT PROC.
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move.l #0,a2 !IN a2 POINTER TO FILENAME .
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2: move.l 16(a5),d0
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beq 9f !LAST PROCEDURE , EXCEPTION .
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move.l d0,a6 !IN a6 POINTER TO NEXT PROCEDURE .
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7: move.l 8(a6),d7 !COUNTPTR OF NEXT IN d7
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bne 8f
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move.l 16(a6),d0
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beq 9f
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move.l d0,a6
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bra 7b
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8: move.l 8(a5),d6 !COUNTPTR OF CURRENT IN d6.
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move.l 12(a5),d5 !FIRST LINE NUMBER IN d5.
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beq 1f !NO LINES : GO ON.
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cmp.l 20(a5),a2 !START PRINTING FILE NAME .
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beq 6f !NO NEW NAME.
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move.l 20(a5),a2 !NEW FILE NAME.
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cmp.l #0,a2 !NO FILE NAME .
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beq 6f
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move.l #0,d1 !START SCANNING FILE NAME
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5: move.b (a2),d0 !d1 WILL CONTAIN NUMBER OF SYMBOLS.
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beq 4f
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add.l #1,d1
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add.l #1,a2
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bra 5b
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4: sub.l d1,a2
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move.l d1,-(sp)
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move.l a2,-(sp)
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mov 8(sp),-(sp) !WRITE FILE NAME.
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bsr _write
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add.l wrd+4,sp !CLEAN STACK.
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6: sub.l d6,d7 !IN d7 NUMBER OF LINES OF CURRENT PROC.
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asl.l #2,d6
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0: move.l a3,a0
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move.l d5,d1 !SET UP FOR CALLING itoa.
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bsr itoa
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lea 11(a3),a0
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move.l 0(a4,d6),d1
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bsr itoa
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move.l #23,-(sp)
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pea buffer
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mov 8(sp),-(sp)
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bsr _write !PRINT LINE NUMBER AND INTEGER .
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add.l wrd+4,sp !CLEAN STACK.
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add.l #1,d5 !NEXT LINE NUMBER .
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add.l #4,d6 !NEXT COUNT.
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sub.l #1,d7 !ONE LINE LESS TO GO.
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bhi 0b
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1: move.l a6,a5
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cmp.l #0,a5
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bne 2b
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add.l wrd,sp !REMOVE FILE DESCR.
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rts !READY.
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9: move.l maxcount,d7
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move.l #0,a6 !NO NEXT PROCEDURE.
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bra 8b
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.sect .data
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buffer: .asciz " \n"
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.sect .text
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#endif
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