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17 commits

Author SHA1 Message Date
Jonas 'Sortie' Termansen
6c6e1091a1 Added memmove(3). 2012-03-04 17:10:52 +01:00
Jonas 'Sortie' Termansen
fec176fa15 Refactored the libmaxsi/ directory.
C and C++ files are now kept together and so are the mxmpp declarations.

Header files are now stored in include/ and mxmpp'd into preproc/.

All other code now -I ../libmaxsi/preproc.

And other stuff to make this happen, including refactoring Makefile.
2012-02-12 13:20:53 +01:00
Jonas 'Sortie' Termansen
1824dd6867 Added memchr(3). 2012-01-09 01:38:44 +01:00
Jonas 'Sortie' Termansen
9064185bd8 Added memcmp(3). 2012-01-08 20:17:27 +01:00
Jonas 'Sortie' Termansen
ad200ffa91 Added getpagesize(2) with the new return type size_t.
This function is non-standard  and size_t is better than int here.
2012-01-08 14:58:57 +01:00
Jonas 'Sortie' Termansen
acf1eebc98 Added user-space memory allocation. 2011-12-16 13:24:49 +01:00
Jonas 'Sortie' Termansen
fecaf6b43f System calls in libmaxsi now use the constants from syscallnum.h. 2011-12-09 12:41:06 +01:00
Jonas 'Sortie' Termansen
6781308360 Rewrote the memory allocation functions.
free(3) can now unify unused neighbor blocks, reducing mem usage.
2011-11-27 22:53:05 +01:00
Jonas 'Sortie' Termansen
4f3a7230b0 Destroying the addressspace after exit prevents leak of at least 16 KiB. 2011-11-27 12:02:34 +01:00
Jonas 'Sortie' Termansen
9152443816 Added memstat, a program for displaying memory usage. 2011-11-26 20:14:57 +01:00
Jonas 'Sortie' Termansen
9f35df813e Implemented errno(3), added support in both kernel and utils. 2011-11-22 17:26:47 +01:00
Jonas 'Sortie' Termansen
2afe9d1fd6 Implemented the fork() system call and what it needed to work properly.
This commit got completely out of control.

Added the fork(), getpid(), getppid(), sleep(), usleep() system calls, and
aliases in the Maxsi:: namespace.

Fixed a bug where zero-byte allocation would fail.

Worked on the DescriptorTable class which now works and can fork.

Got rid of some massive print-registers statements and replaced them with
the portable InterruptRegisters::LogRegisters() function.

Removed the SysExecuteOld function and replaced it with Process::Execute().

Rewrote the boot sequence in kernel.cpp such that it now loads the system
idle process 'idle' as PID 0, and the initization process 'init' as PID 1.

Rewrote the SIGINT hack.

Processes now maintain a family-tree structure and keep track of their
threads. PIDs are now allocated using a simple hack. Virtual memory
per-process can now be allocated using a simple hack. Processes can now be
forked. Fixed the Process::Execute function such that it now resets the
stack pointer to where the stack actually is - not just a magic value.
Removed the old and ugly Process::_endcodesection hack.

Rewrote the scheduler into a much cleaner and faster version. Debug code is
now moved to designated functions. The noop kernel-thread has been replaced
by a simple user-space infinite-loop program 'idle'.

The Thread class has been seperated from the Scheduler except in Scheduler-
related code. Thread::{Save,Load}Registers has been improved and has been
moved to $(CPU)/thread.cpp. Threads can now be forked. A new CreateThread
function creates threads properly and portably.

Added a MicrosecondsSinceBoot() function.

Fixed a crucial bug in MemoryManagement::Fork().

Added an 'idle' user-space program that is a noop infinite loop, which is
used by the scheduler when there is nothing to do.

Rewrote the 'init' program such that it now forks off a shell, instead of
becoming the shell.

Added the $$ (current PID) and $PPID (parent PPID) variables to the shell.
2011-11-01 01:00:20 +01:00
Jonas 'Sortie' Termansen
66192d1e86 Rewrote memory management again and added support for x64 and forking. 2011-10-10 01:02:57 +02:00
Jonas 'Sortie' Termansen
c157e65352 Removed lots of deprecated suff! 2011-09-06 19:51:47 +02:00
Jonas 'Sortie' Termansen
fe65e12992 Removed unnededed TLB flush from libmaxsi heap code. 2011-08-12 00:55:48 +02:00
Jonas 'Sortie' Termansen
66c058fba1 Refactored virtual memory management, making it less buggy.
uintptr_t is now replaced with addr_t when referring to physical memory
addresses in Sortix. Many bugs in the previous memory management code have been
fixed. The new interface is less flexible - but should prove more solid as the
nasty internals have been hidden away. The current interface design should also
make the code more 64-bit ready/friendly. And so on.
2011-08-07 00:18:41 +02:00
Jonas 'Sortie' Termansen
9b79673dcb Initial version of Sortix. 2011-08-05 14:25:00 +02:00