Wenyang Duan
343d1ab482
Put parentheses around macro argument.
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It might be too paranoid but makes it safe to deal with operators
with lower priorities than '+', '<<' for example.
2024-07-26 19:02:01 -04:00
Robert Morris
92e60dd833
switch from machine-mode to supervisor timer interrupts.
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this requires qemu version >= 7.2.
2024-07-10 07:29:26 -04:00
Robert Morris
fe940f4d63
fix user.ld to get read-only text with riscv64-linux-gnu-ld 2.41
2024-01-01 13:10:35 -05:00
Robert Morris
dd2574bc10
tell gcc to check printf format strings
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add %ld %lld %u %lu %llu %lx %llx to kernel and user printf
2023-12-31 12:21:46 -05:00
Robert Morris
2b552503c0
no need to check state == RUNNING in timer interrupt because
...
interrupts are always off (i.e. a lock is held) any time the
current process is not in RUNNING state.
2023-10-14 06:24:14 -04:00
Robert Morris
0c32c04b29
kernelvec only needs to save caller-saved registers
2023-10-14 06:23:09 -04:00
asselism
74c1eba516
Made va and size page aligned in mappages
2022-10-18 00:11:49 -04:00
Robert Morris
0802d56a9b
x
2022-10-17 04:10:01 -04:00
Robert Morris
4a88273db5
oops. scheduler() inherits the interrupt status of the
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most recent process to run, so it must explicitly
turn them on again. It would be better if cpu->intena
were really thread->intena.
2022-10-17 04:07:24 -04:00
Robert Morris
f376ad7f1f
scheduler()'s intr_on() is in the wrong place, reflecting
...
the locking scheme from long ago.
2022-10-16 15:28:21 -04:00
Robert Morris
348cf7fee4
forkret first memory model
2022-10-12 13:07:55 -04:00
Robert Morris
d2b2dff749
fix copyout() to refuse to write a read-only page
2022-10-04 11:52:57 -04:00
Frans Kaashoek
989e8f2f1f
Remove unused PLIC_M* macros
2022-09-18 16:32:21 -04:00
Robert Morris
463ae0abc3
handle negative arguments to sleep() a little better
2022-09-09 09:17:37 -04:00
Robert Morris
ed101befee
comment the sfences
2022-08-24 13:47:47 -04:00
Robert Morris
581bc4cbd1
sfence before enabling paging
2022-08-24 13:42:59 -04:00
Robert Morris
29ce3161f8
Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv
2022-08-24 13:24:37 -04:00
Robert Morris
9c1b8a4eb0
sfence before writing satp, as well as after
2022-08-24 13:24:24 -04:00
Frans Kaashoek
cc486ddee0
Help students read this C syntax
2022-08-24 08:57:56 -04:00
Robert Morris
96047832c6
Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv
2022-08-23 12:26:39 -04:00
Robert Morris
7c1810e1ae
tolerate running out of inodes
2022-08-23 12:26:26 -04:00
Frans Kaashoek
ac8c0bb177
x
2022-08-23 11:56:29 -04:00
Frans Kaashoek
858fc68bdf
Linker script makes binaries bigger; use larger disk so that usertests
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can run.
Must assumed_free in badwrite() be adjusted?
2022-08-23 11:19:33 -04:00
Frans Kaashoek
ccb7bd14c7
Merge branch 'riscv' into uvm-perm
2022-08-23 11:01:06 -04:00
Frans Kaashoek
4cd4d194b8
Use simple linker script to force data segment to be page aligned
2022-08-23 10:54:40 -04:00
Robert Morris
8621be8f3d
tolerate out of disk when creating . and .. in mkdir()
2022-08-23 08:52:15 -04:00
Robert Morris
dc405cdb7b
don't panic if out of disk space when extending a directory.
2022-08-23 08:23:12 -04:00
Frans Kaashoek
cd6207a972
Merge branch 'riscv-killed' into riscv
2022-08-23 07:31:08 -04:00
Frans Kaashoek
2f0b4d698b
Use pp instead of np to be more consistent
2022-08-22 19:58:33 -04:00
Frans Kaashoek
2a391ebc8b
Make argint() and argaddr() of type void (thanks Harry Porter)
2022-08-22 19:53:09 -04:00
Frans Kaashoek
7086197c27
Simplify uartputc slightly (thanks Harry Porter)
2022-08-22 19:36:11 -04:00
Robert Morris
63ef3b8c9f
slightly better comments
2022-08-22 13:49:15 -04:00
Frans Kaashoek
1d4c437ea1
Use uint64 (thanks carlclone and Harry Porter)
2022-08-17 20:37:22 -04:00
Frans Kaashoek
cef1b57d4a
Compile user binary to map text without W and data without X
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Use the flags in elf header to set vm permissions
Modify pgbug() so that usertests text segment is without W
Add test to check app cannot write text segment
2022-08-15 19:02:19 -04:00
Frans Kaashoek
7a6d57235c
Costmestic change (thanks Harry Porter)
2022-08-12 14:59:30 -04:00
Frans Kaashoek
899cc02660
Experiment with being more precise setting permissions for user pages.
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Growing adds R|W pages (without X). Exec() marks the stack only R|W.
Probably could setup permissions for text and data better if we call
ld with --no-omagic instead of -N.
2022-08-12 13:22:10 -04:00
Frans Kaashoek
8f58cc7df9
Cosmetic change (thanks Harry Porter)
2022-08-12 12:59:33 -04:00
Frans Kaashoek
62bc610424
cosmetic changes (thanks Harry Porter)
2022-08-12 11:47:39 -04:00
Frans Kaashoek
dd5a720044
cosmetic changes (thanks Harry Porter)
2022-08-12 10:57:16 -04:00
Frans Kaashoek
8bd04852c9
Delete rtcdate, which is a left-over from an old lab (thanks Harry Porter)
2022-08-12 09:43:18 -04:00
Frans Kaashoek
48d1a7ffa5
Add USED to states (thanks Harry Porter)
2022-08-12 09:14:54 -04:00
Frans Kaashoek
4f716c8550
Use p->lock to read p->killed
2022-08-11 14:22:00 -04:00
Frans Kaashoek
429c7b717e
Use atomic store_n and load_n
2022-08-11 08:42:52 -04:00
Frans Kaashoek
975f3b31d3
Clean up using killed()
2022-08-11 07:23:17 -04:00
Frans Kaashoek
4087a6e7fc
Read and write p->killed using atomics
2022-08-10 20:35:42 -04:00
Robert Morris
c908d20132
put walk() in defs.h so it's clear students can call it
2022-08-10 07:21:50 -04:00
Robert Morris
872fa88e8a
tolerate running out of disk blocks
2022-08-10 06:13:52 -04:00
Robert Morris
7d573bae2a
Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv
2022-08-10 06:00:57 -04:00
Robert Morris
f4b3edf5ab
comment nits
2022-08-10 06:00:40 -04:00
WaheedHafez
9f3673c4da
fix 'kfree' comment in kalloc.c
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'kfree' has a parameter named 'pa' but referenced in the comment as 'v'.
2022-08-09 20:29:38 -04:00
