1 # Methods for constructing buffered-file objects. 2 # 3 # TODO: There are hard-coded parameters here for buffer sizes. When they 4 # overflow, tracking down what's going on can get hairy. 5 # 6 # HACK: buffered-file stores naked addrs. This is safe because buffered-file 7 # objects are opaque. But still sub-optimal; they'll be harder to reclaim when 8 # we get around to that. 9 10 == code 11 12 open: # filename: (addr array byte), write?: boolean, out: (addr handle buffered-file) 13 # . prologue 14 55/push-ebp 15 89/<- %ebp 4/r32/esp 16 # . save registers 17 50/push-eax 18 51/push-ecx 19 52/push-edx 20 53/push-ebx 21 56/push-esi 22 57/push-edi 23 # ecx = filename 24 8b/-> *(ebp+8) 1/r32/ecx 25 # var size/edx: int = filename->length + 1 for the trailing null character 26 8b/-> *ecx 2/r32/edx 27 42/increment-edx 28 # var s/esi: (stream size) 29 29/subtract-from %esp 2/r32/edx 30 52/push-edx # size 31 68/push 0/imm32/read 32 68/push 0/imm32/write 33 89/<- %esi 4/r32/esp 34 # copy filename and a final null character 35 (clear-stream %esi) 36 (write %esi %ecx) 37 # spill edx 38 52/push-edx 39 # var fd/ecx: fd = open(filename) 40 8d/copy-address *(esi+0xc) 3/r32/ebx 41 8b/-> *(ebp+0xc) 1/r32/ecx/flags 42 ba/copy-to-edx 0x180/imm32/permissions 43 e8/call syscall_open/disp32 4<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html><head><title>Python: module ranger.ext.accumulator</title> </head><body bgcolor="#f0f0f8"> <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading"> <tr bgcolor="#7799ee"> <td valign=bottom> <br> <font color="#ffffff" face="helvetica, arial"> <br><big><big><strong><a href="ranger.html"><font color="#ffffff">ranger</font></a>.<a href="ranger.ext.html"><font color="#ffffff">ext</font></a>.accumulator</strong></big></big></font></td ><td align=right valign=bottom ><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="file:/home/hut/ranger/ranger/ext/accumulator.py">/home/hut/ranger/ranger/ext/accumulator.py</a></font></td></tr></table> <p><tt># Copyright (C) 2009,