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Minimal device system, implement terminal device and libterminal
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This commit is contained in:
Kamil Kowalczyk
2026-02-12 15:49:04 +01:00
parent 4ad1519e06
commit f07e920270
40 changed files with 4664 additions and 7 deletions
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52
kernel/syscall/syscall.c
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@@ -1,5 +1,7 @@
#include <aux/compiler.h>
#include <device/device.h>
#include <libk/assert.h>
#include <libk/fieldlengthof.h>
#include <libk/std.h>
#include <limine/requests.h>
#include <m/status.h>
@@ -166,6 +168,55 @@ DEFINE_SYSCALL (sys_mutex_unlock) {
return SYSRESULT (ST_OK);
}
/* int device_do (int device_id, int cmd, void* a1, void* a2, void* a3, void* a4) */
DEFINE_SYSCALL (sys_device_do) {
struct limine_hhdm_response* hhdm = limine_hhdm_request.response;
int device_id = (int)a1;
int cmd = (int)a2;
uintptr_t ua1 = a3, ka1 = 0;
uintptr_t ua2 = a4, ka2 = 0;
uintptr_t ua3 = a5, ka3 = 0;
uintptr_t ua4 = a6, ka4 = 0;
uintptr_t out_paddr;
if (!(cmd >= 0 && cmd < (int)fieldlengthof (struct device, ops)))
return -ST_BAD_DEVICE_OP;
spin_lock (&proc->procgroup->lock);
out_paddr = mm_v2p (&proc->procgroup->pd, ua1);
if (out_paddr != 0)
ka1 = (uintptr_t)hhdm->offset + out_paddr;
out_paddr = mm_v2p (&proc->procgroup->pd, ua2);
if (out_paddr != 0)
ka2 = (uintptr_t)hhdm->offset + out_paddr;
out_paddr = mm_v2p (&proc->procgroup->pd, ua3);
if (out_paddr != 0)
ka3 = (uintptr_t)hhdm->offset + out_paddr;
out_paddr = mm_v2p (&proc->procgroup->pd, ua4);
if (out_paddr != 0)
ka4 = (uintptr_t)hhdm->offset + out_paddr;
spin_unlock (&proc->procgroup->lock);
struct device* device = device_find (device_id);
if (device == NULL)
return -ST_NOT_FOUND;
spin_lock (&device->lock);
int ret = device->ops[cmd]((void*)ka1, (void*)ka2, (void*)ka3, (void*)ka4);
spin_unlock (&device->lock);
return ret;
}
static syscall_handler_func_t handler_table[] = {
[SYS_QUIT] = &sys_quit,
[SYS_TEST] = &sys_test,
@@ -178,6 +229,7 @@ static syscall_handler_func_t handler_table[] = {
[SYS_MUTEX_DELETE] = &sys_mutex_delete,
[SYS_MUTEX_LOCK] = &sys_mutex_lock,
[SYS_MUTEX_UNLOCK] = &sys_mutex_unlock,
[SYS_DEVICE_DO] = &sys_device_do,
};
syscall_handler_func_t syscall_find_handler (int syscall_num) {