f2e128c57e
handle: re-arrange handle space layout
...
the lowest 2 bits of handle values are no longer unused, and 0 is
now a valid handle value.
the first 64 handles are now reserved, and will not be automatically
allocated by the kernel. however, they are still valid handles, and
other handles can be moved to this area using an as-yet-unwritten
function. this is to allow support for standard POSIX file descriptors,
which require the values 0, 1, and 2.
2026-02-19 19:11:11 +00:00
c6e1ba21dd
vm: implement direct read/write/copy access to vm-object memory
2026-02-19 19:09:38 +00:00
2f413c603d
kernel: all string parameters now take a corresponding length parameter
2026-02-19 19:08:17 +00:00
291a5f677e
sched: implement passing arguments to user-mode threads
2026-02-19 19:05:53 +00:00
b188573eea
x86_64: pmap: change pmap_remove* pointer args to virt_addr_t
2026-02-19 19:02:28 +00:00
c69aed254f
x86_64: enable interrupts during syscall execution
2026-02-19 19:00:04 +00:00
44c2904c11
x86_64: re-arrange user and kernel GDT entries for compatibility with syscall instruction
2026-02-19 18:59:37 +00:00
f89e3cb12c
kernel: adjust formatting
2026-02-19 18:57:53 +00:00
6019c9307d
kernel: separate headers into kernel and user headers
...
all kernel headers have been moved from include/mango to include/kernel
and include definitions that are only relevant to kernel-space.
any definitions that are relevant to both kernel- and user-space
(i.e. type definitions, syscall IDs) have been moved to
include/mango within libmango.
2026-02-19 18:54:48 +00:00
e3dd48a0fa
build: remove per-subdirectory log message
2026-02-08 16:17:47 +00:00
9f7b7bdd2d
kernel: refactor syscall dispatch system
2026-02-08 16:17:11 +00:00
c424e8127e
kernel: bsp: update vm-region api usage
2026-02-08 15:52:04 +00:00
fb7d7635c2
vm: region: refactor to use offsets rather than absolute addresses
2026-02-08 15:51:51 +00:00
409725f9d4
kernel: implementing mapping and execution of bsp executable
2026-02-08 13:13:03 +00:00
1c74291b99
kernel: add a temporary syscall dispatch system
2026-02-08 13:12:24 +00:00
5d28955dc6
vm: update vm-page documentation
2026-02-08 13:11:41 +00:00
ee82097017
sched: implement user-mode task and thread creation
2026-02-08 13:11:17 +00:00
d2f303680d
sched: add root vm-region and handle table to struct task
2026-02-08 13:10:54 +00:00
27bed1a3d3
sched: all kernel-mode tasks now have negative task ids
2026-02-08 13:09:29 +00:00
18a5325fa7
sched: add PID_MAX definition
2026-02-08 13:07:14 +00:00
7eaad64969
pmap: declare fault handler function and flags
2026-02-08 13:06:19 +00:00
343689764f
x86_64: irq: route user-mode page faults to pmap_handle_fault
2026-02-08 13:05:29 +00:00
5f2ad06fb0
x86_64: all intermediate page table entries now have PTE_USR set
...
this allows user-accessible page mappings to be created. for kernel memory
mappings, PTE_USR will only be cleared on the lowest-level table entry.
2026-02-08 13:03:41 +00:00
67b3be9732
x86_64: add pmap_handle_fault to route user-mode page faults to vm-region to resolve
2026-02-08 13:03:28 +00:00
883b5ac9e2
vm: add vm-region to manage userspace virtual memory address spaces
...
vm-region supports creating nested regions of virtual memory, each with their
own memory protection restrictions.
vm-objects can be mapped into a vm-region, making the underlying memory
accessible. all mappings are lazy: page tables are not updated until the
mapped memory is accessed.
2026-02-08 12:59:08 +00:00
b8ccffd2d4
vm: add vm-object to represent non-contiguous physical memory allocations
...
vm-object can be used to demand-allocate non-contiguous physical memory, and
will provide an api for userspace programs to do the same. unless a vm-object
is created in-place (i.e. to represent a specific area of physical memory),
its memory pages are only allocated when the object is mapped AND someone
attempts to access the memory.
2026-02-08 12:58:31 +00:00
14ebcd4875
kernel: implement object handle tables
2026-02-08 12:55:47 +00:00
6950850f5b
object: add a macro to define object lock/unlock functions
2026-02-08 12:55:13 +00:00
bcda479879
sched: implement task id allocation; remove thread id bitmap
2026-02-08 12:54:43 +00:00
7c4cff24f2
test: update object api usage
2026-02-08 12:52:14 +00:00
b31c3a40b4
vm: sparse: ensure that vm_pages for the reserved bsp region are created
2026-02-08 12:51:55 +00:00
2b1bed844a
vm: change virt_to_phys param to const
2026-02-08 12:51:23 +00:00
26afc3c6c3
vm: sparse: fix region base/limit alignment calculation
2026-02-08 12:50:08 +00:00
d94a6ec7cb
kernel: add generic FATAL_ERROR status code
2026-02-08 12:48:59 +00:00
0d73196b4b
printk: add macro for conditional trace-level printk statements
2026-02-08 12:48:33 +00:00
687ba31d55
bitmap: fix bitmal_clear() clearing bits in the wrong direction
2026-02-08 12:47:58 +00:00
9e223ca5d0
x86_64: implement syscall instruction init and dispatch
2026-02-08 12:47:28 +00:00
4de1463e7c
object: add functions to track handle allocation
2026-02-08 12:37:08 +00:00
5304e5be00
object: rename deref to unref
2026-02-08 12:36:32 +00:00
0853cff56b
vm: remove vm_region; add vm_page_get_size_bytes
2026-02-08 12:33:36 +00:00
aaa76ff197
memblock: make virt_to_phys pointer param const
2026-02-08 12:33:03 +00:00
0490541dc9
kernel: adjust formatting
2026-02-08 12:32:48 +00:00
49a75a1bbe
pmap: change pmap_add* virtual pointer parameter to virt_addr_t
2026-02-08 12:08:26 +00:00
34f614b881
libc: move fill_random to kernel/util
2026-02-08 12:06:50 +00:00
720ed75770
x86_64: add invalid pmap pointer constant
2026-02-08 11:59:18 +00:00
880930e917
x86_64: implement functions to jump to userspace
2026-02-08 11:58:27 +00:00
da611ab070
x86_64: find, record, and reserve the memory location of the bsp
2026-02-08 11:52:33 +00:00
129e782e99
kernel: add functions to get/set the bsp boot module location
2026-02-08 11:38:50 +00:00
00ea2b1b3b
x86_64: adjust formatting
2026-02-08 11:36:16 +00:00
4051265876
x86_64: implement TSS initialisation and user/kernel stack pointer switching
2026-02-08 11:34:49 +00:00
