| .macro FUNC_START name |
| .text |
| .globl \name |
| .globl _\name |
| \name: |
| _\name: |
| .endm |
| |
| FUNC_START _sbrk |
| mov r4, r2 // save increment |
| lrw r3, brkval |
| ldw r2, (r3) // get next spot |
| |
| movi r5, 7 |
| addi r2, 7 // round up to 8 bytes |
| andn r2, r5 |
| |
| addu r4, r2 // save updated pointer |
| stw r4, (r3) |
| jmp r15 |
| |
| // brk() could go in here too... |
| |
| .data |
| .import _end |
| brkval: .long _end |
| |
| |
| FUNC_START _exit |
| mov r1, r1 // accomodate simulator glitch... |
| .short 0x5000 |
| br _exit // hard loop here |
| |
| // 0x5001 - printf |
| // 0x5002 - scanf |
| |
| FUNC_START utime |
| .short 0x5003 |
| jmp r15 |
| |
| |
| .macro stub name value |
| FUNC_START \name |
| movi r1, \value |
| .short 0x50FF |
| jmp r15 |
| .endm |
| |
| stub _close 6 |
| stub _lseek 19 |
| stub _open 5 |
| stub _read 3 |
| stub _times 43 |
| stub _unlink 10 |
| stub _write 4 |
| |
| //stub access 33 |
| //stub creat 8 |
| //stub link 9 |
| //stub time 13 |
| |
| //stub profil 98 // movi r6, 2 |
| //stub lprofil 98 // movi r6, 4 |
| |
