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Author SHA1 Message Date
Robert Morris d7e5f26910 fix usertests to pass all the riscv-sol-fall20 solutions. 2020-08-27 06:21:10 -04:00
Frans Kaashoek efaa7b8e2a Adjust a few prototypes to be explicit that they don't take arguments 2020-08-21 10:56:27 -04:00
Robert Morris 59a9863a17 touch sbrk()-allocated memory to make sure it exists 2020-08-19 13:10:14 -04:00
Robert Morris aefa2697d7 usertest for exec() out of memory recovery 
and fix a few exec() bugs
 2020-08-19 12:35:14 -04:00
Frans Kaashoek b33574df38 Use the major number defined in file.h. The minor number is ignored; 
might as well use 0.
 2020-08-18 20:48:53 -04:00
Frans Kaashoek 740d363736 Delete some obselete stuff 2020-08-17 14:25:12 -04:00
Robert Morris b154cf091c x 2020-08-15 05:46:32 -04:00
Robert Morris 4a87a0ae8b fix a bug in the out-of-memory handling code in exec 2020-08-13 14:10:58 -04:00
Robert Morris adee82c3e7 handle another out-of-memory in fork(). the policy here is not consistent, 
since other calls (e.g. exec()) panic on out of memory.
 2020-08-13 10:22:07 -04:00
Robert Morris 4c22c54480 try to handle a few of the possible out-of-memory errors in fork() 2020-08-13 09:19:23 -04:00
Robert Morris 70c6fe861e modify uvmunmap() to be in aligned pages 
fix a bug in fork() recovering from out of memory
 2020-08-13 08:46:28 -04:00
Robert Morris e1a2cd59fa Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2020-08-13 08:05:13 -04:00
Robert Morris d32eac366f pa isn't needed in the uvmunmap() loop 2020-08-13 08:04:56 -04:00
Frans Kaashoek 315c37c0f1 Update to the latest specs 2020-08-10 20:28:12 -04:00
Frans Kaashoek 468946781f copyright and 6.S081 2020-08-10 19:45:28 -04:00
Frans Kaashoek 737bd3a55d Ack bug finders. 2020-08-10 16:42:33 -04:00
Frans Kaashoek 2db95f08b1 Typo (thanks yt <jaichenhengjie@qq.com>) 2020-08-10 16:27:26 -04:00
Frans Kaashoek f14aa421c4 Generate initcode without compressed extensions 2020-08-10 13:59:40 -04:00
Asami Doi c24844714b update initcode to avoid using the compressed extension 2020-08-10 13:59:40 -04:00
Takahiro 9eff4b0871 Write interrupt ack register in virtio_disk_intr() 2020-08-10 13:59:40 -04:00
Jonathan Kimmitt b557e7c32e Update ramdisk.c 
The qemu syntax for a ram disk was documented incorrectly. The documented syntax is here:
https://qemu.weilnetz.de/doc/qemu-doc.html
 2020-08-10 13:59:40 -04:00
Fumiya Shigemitsu ffcb883adf Fix minor typos 2020-08-10 13:59:38 -04:00
Robert Morris 6cb6764bb1 test string system call arguments that cross over the end of the last page. 2020-08-07 16:56:00 -04:00
Robert Morris 234391b6bf test copyinstr()'s handling of the terminating null 2020-08-07 16:39:56 -04:00
Robert Morris 354adfdafc streamline copyin/copyout code in usertests 
fix bugs in read/write return values when there's an error
 2020-08-07 15:06:43 -04:00
Robert Morris f01b1a8b71 test pointer checking in copyin, copyout, copyinstr 2020-08-07 14:34:39 -04:00
Robert Morris e4b9346679 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2020-08-07 05:33:23 -04:00
Robert Morris 8b9b799937 modify each page in usertests countfree() 
get rid of static for walk() and freewalk()
 2020-08-07 05:32:48 -04:00
Frans Kaashoek 6c3099d314 Change tf -> trapframe in a few comments 2020-08-06 20:31:19 -04:00
Robert Morris 050a69610a defines for UART register bits 2020-07-23 06:27:20 -04:00
Robert Morris db0f092ae4 fix printf() in interrupts 2020-07-22 10:31:46 -04:00
Robert Morris 823864099d interrupt-driven uart output, hopefully a nice example for teaching. 2020-07-20 06:59:26 -04:00
Robert Morris 3b053f5d58 cpu->scheduler -> cpu->context to reduce confusion 2020-07-17 16:40:57 -04:00
Robert Morris d6dad42aaf rename p->tf to p->trapframe, for consistency with p->context 2020-07-17 16:29:52 -04:00
Robert Morris 7a7cd1adef drop QEMUEXTRA 2020-07-17 16:29:43 -04:00
Robert Morris f3979b7212 make "echo hello > x" truncate file x. 2020-07-16 11:38:08 -04:00
Robert Morris c98e1afe79 allow more files 2019-11-08 13:21:06 -05:00
Robert Morris 507028de9d more grind 2019-11-07 09:46:20 -05:00
Robert Morris d1b8b19cd3 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2019-11-07 06:44:33 -05:00
Robert Morris 20f1dd9409 more grind 2019-11-07 06:44:23 -05:00
rtm 73e931fd42 yet another toolchain name 2019-11-07 06:43:38 -05:00
Robert Morris 16b3b63f06 grind: run parallel system calls forever 2019-11-06 11:18:43 -05:00
Robert Morris 028af27646 mention LRU list a bit more in comments. 2019-10-29 04:32:55 -04:00
Robert Morris 9de9211b11 usertests -c to repeat tests forever 
detect memory leaks
no more "already ran user tests"
 2019-10-28 05:58:28 -04:00
Robert Morris e7ffb74ad1 fix a potential memory leak 2019-10-27 13:36:46 -04:00
Robert Morris d9160fb4b9 nits 2019-10-27 08:03:19 -04:00
Anish Athalye f2ab0eb644 Clean up linker script 
This patch does the following:

- Add .text.* to the .text section in the output
- Add an assertion that the trampoline does not overflow a page
- Add the .rodata section
- Make .sdata and .sdata.* (which is for small data) be absorbed into
  the .data section, because we don't need to distinguish between them;
  this prevents .sdata from appearing in the output
- Make the analogous change for .srodata and .sbss
- Make all the data sections 16-byte aligned

This patch also updates the .editorconfig for *.ld files.
 2019-10-21 22:27:18 -04:00
Robert Morris 2821d43cc9 nits 2019-10-16 12:27:08 -04:00
Anish Athalye f2df0fa547 Fix ulib's memmove to handle overlap when src<dst 2019-10-08 21:24:03 -04:00
Anish Athalye 8509784d80 Add implementations of memcmp and memcpy to ulib 
This is necessary because gcc may generate calls to memcmp, memset,
memcpy, and memmove when compiling with -nostdlib.
 2019-10-08 21:18:54 -04:00