| 1 | / |
| 2 | / |
| 3 | |
| 4 | / a4 -- pdp-11 assembler pass1 |
| 5 | |
| 6 | rname: |
| 7 | mov r1,-(sp) |
| 8 | mov r2,-(sp) |
| 9 | mov r3,-(sp) |
| 10 | mov $8,r5 |
| 11 | mov $symbol+8.,r2 |
| 12 | clr -(r2) |
| 13 | clr -(r2) |
| 14 | clr -(r2) |
| 15 | clr -(r2) |
| 16 | clr -(sp) |
| 17 | clr -(sp) |
| 18 | cmp r0,$'~ / symbol not for hash table |
| 19 | bne 1f |
| 20 | inc 2(sp) |
| 21 | clrb ch |
| 22 | 1: |
| 23 | jsr pc,rch |
| 24 | movb chartab(r0),r3 |
| 25 | ble 1f |
| 26 | add r3,(sp) |
| 27 | swab (sp) |
| 28 | dec r5 |
| 29 | blt 1b |
| 30 | movb r3,(r2)+ |
| 31 | br 1b |
| 32 | 1: |
| 33 | movb r0,ch |
| 34 | mov (sp)+,r1 |
| 35 | clr r0 |
| 36 | tst (sp)+ |
| 37 | beq 1f |
| 38 | mov symend,r4 |
| 39 | br 4f |
| 40 | 1: |
| 41 | div $hshsiz,r0 |
| 42 | ashc $1,r0 |
| 43 | add $hshtab,r1 |
| 44 | clr timesaround |
| 45 | 1: |
| 46 | sub r0,r1 |
| 47 | cmp r1,$hshtab |
| 48 | bhi 2f |
| 49 | add $2*hshsiz,r1 |
| 50 | tst timesaround |
| 51 | beq 3f |
| 52 | mov $1,r0 |
| 53 | sys write; 9f; 8f-9f |
| 54 | jmp aexit |
| 55 | .data |
| 56 | timesaround: |
| 57 | .=.+2 |
| 58 | 9: <as: symbol table overflow\n>; 8: .even |
| 59 | .text |
| 60 | 3: |
| 61 | inc timesaround |
| 62 | 2: |
| 63 | mov $symbol,r2 |
| 64 | mov -(r1),r4 |
| 65 | beq 3f |
| 66 | cmp (r2)+,(r4)+ |
| 67 | bne 1b |
| 68 | cmp (r2)+,(r4)+ |
| 69 | bne 1b |
| 70 | cmp (r2)+,(r4)+ |
| 71 | bne 1b |
| 72 | cmp (r2)+,(r4)+ |
| 73 | bne 1b |
| 74 | br 1f |
| 75 | 3: |
| 76 | mov symend,r4 |
| 77 | mov r4,(r1) |
| 78 | 4: |
| 79 | mov $symbol,r2 |
| 80 | mov r4,-(sp) |
| 81 | add $20,r4 |
| 82 | cmp r4,0f |
| 83 | blos 4f |
| 84 | add $512.,0f |
| 85 | sys indir; 9f |
| 86 | .data |
| 87 | 9: sys break; 0:end |
| 88 | .text |
| 89 | 4: |
| 90 | mov (sp)+,r4 |
| 91 | mov (r2)+,(r4)+ |
| 92 | mov (r2)+,(r4)+ |
| 93 | mov (r2)+,(r4)+ |
| 94 | mov (r2)+,(r4)+ |
| 95 | clr (r4)+ |
| 96 | clr (r4)+ |
| 97 | mov r4,symend |
| 98 | sub $4,r4 |
| 99 | 1: |
| 100 | mov r4,-(sp) |
| 101 | mov r4,r3 |
| 102 | sub $8,r3 |
| 103 | cmp r3,$usymtab |
| 104 | blo 1f |
| 105 | sub $usymtab,r3 |
| 106 | clr r2 |
| 107 | div $3,r2 |
| 108 | mov r2,r4 |
| 109 | add $4000,r4 / user symbol |
| 110 | br 2f |
| 111 | 1: |
| 112 | sub $symtab,r3 |
| 113 | clr r2 |
| 114 | div $3,r2 |
| 115 | mov r2,r4 |
| 116 | add $1000,r4 / builtin symbol |
| 117 | 2: |
| 118 | jsr pc,putw |
| 119 | mov (sp)+,r4 |
| 120 | mov (sp)+,r3 |
| 121 | mov (sp)+,r2 |
| 122 | mov (sp)+,r1 |
| 123 | tst (sp)+ |
| 124 | rts pc |
| 125 | |
| 126 | number: |
| 127 | mov r2,-(sp) |
| 128 | mov r3,-(sp) |
| 129 | mov r5,-(sp) |
| 130 | clr r1 |
| 131 | clr r5 |
| 132 | 1: |
| 133 | jsr pc,rch |
| 134 | jsr r5,betwen; '0; '9 |
| 135 | br 1f |
| 136 | sub $'0,r0 |
| 137 | mpy $10.,r5 |
| 138 | add r0,r5 |
| 139 | als $3,r1 |
| 140 | add r0,r1 |
| 141 | br 1b |
| 142 | 1: |
| 143 | cmp r0,$'b |
| 144 | beq 1f |
| 145 | cmp r0,$'f |
| 146 | beq 1f |
| 147 | cmp r0,$'. |
| 148 | bne 2f |
| 149 | mov r5,r1 |
| 150 | clr r0 |
| 151 | 2: |
| 152 | movb r0,ch |
| 153 | mov r1,r0 |
| 154 | mov (sp)+,r5 |
| 155 | mov (sp)+,r3 |
| 156 | mov (sp)+,r2 |
| 157 | rts pc |
| 158 | 1: |
| 159 | mov r0,r3 |
| 160 | mov r5,r0 |
| 161 | jsr pc,fbcheck |
| 162 | add $141,r0 |
| 163 | cmp r3,$'b |
| 164 | beq 1f |
| 165 | add $10.,r0 |
| 166 | 1: |
| 167 | mov r0,r4 |
| 168 | mov (sp)+,r5 |
| 169 | mov (sp)+,r3 |
| 170 | mov (sp)+,r2 |
| 171 | add $2,(sp) |
| 172 | rts pc |
| 173 | |
| 174 | rch: |
| 175 | movb ch,r0 |
| 176 | beq 1f |
| 177 | clrb ch |
| 178 | rts pc |
| 179 | 1: |
| 180 | dec inbfcnt |
| 181 | blt 2f |
| 182 | movb *inbfp,r0 |
| 183 | inc inbfp |
| 184 | bic $!177,r0 |
| 185 | beq 1b |
| 186 | rts pc |
| 187 | 2: |
| 188 | movb fin,r0 |
| 189 | beq 3f |
| 190 | sys read; inbuf;512. |
| 191 | bcs 2f |
| 192 | tst r0 |
| 193 | beq 2f |
| 194 | mov r0,inbfcnt |
| 195 | mov $inbuf,inbfp |
| 196 | br 1b |
| 197 | 2: |
| 198 | movb fin,r0 |
| 199 | clrb fin |
| 200 | sys close |
| 201 | 3: |
| 202 | decb nargs |
| 203 | bgt 2f |
| 204 | mov $'\e,r0 |
| 205 | rts pc |
| 206 | 2: |
| 207 | tst ifflg |
| 208 | beq 2f |
| 209 | jsr r5,error; 'i |
| 210 | jmp aexit |
| 211 | 2: |
| 212 | mov curarg,r0 |
| 213 | tst (r0)+ |
| 214 | mov (r0),0f |
| 215 | mov r0,curarg |
| 216 | incb fileflg |
| 217 | sys indir; 9f |
| 218 | .data |
| 219 | 9: sys open; 0:0; 0 |
| 220 | .text |
| 221 | bec 2f |
| 222 | mov 0b,r0 |
| 223 | jsr r5,filerr; <?\n> |
| 224 | jmp aexit |
| 225 | 2: |
| 226 | movb r0,fin |
| 227 | mov $1,line |
| 228 | mov r4,-(sp) |
| 229 | mov r1,-(sp) |
| 230 | mov $5,r4 |
| 231 | jsr pc,putw |
| 232 | mov *curarg,r1 |
| 233 | 2: |
| 234 | movb (r1)+,r4 |
| 235 | beq 2f |
| 236 | jsr pc,putw |
| 237 | br 2b |
| 238 | 2: |
| 239 | mov $-1,r4 |
| 240 | jsr pc,putw |
| 241 | mov (sp)+,r1 |
| 242 | mov (sp)+,r4 |
| 243 | br 1b |
| 244 | |