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boredos_mirror/src/sys/syscall.c
boreddevnl 3169ec51cb FEAT: SYSTEM_CMD_PARALLEL_RUN
2026-04-02 20:21:06 +02:00

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// Copyright (c) 2023-2026 Chris (boreddevnl)
// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
// This header needs to maintain in any file it is present in, as per the GPL license terms.
#include "syscall.h"
#include "gdt.h"
#include "memory_manager.h"
#include "gui_ipc.h"
#include "process.h"
#include "wm.h"
#include "fat32.h"
#include "paging.h"
#include "platform.h"
#include "io.h"
#include "pci.h"
#include "kutils.h"
#include "network.h"
#include "icmp.h"
#include "cmd.h"
#include "font_manager.h"
#include "graphics.h"
extern bool ps2_ctrl_pressed;
// Read MSR
static inline uint64_t rdmsr(uint32_t msr) {
uint32_t low, high;
asm volatile("rdmsr" : "=a"(low), "=d"(high) : "c"(msr));
return ((uint64_t)high << 32) | low;
}
// Write MSR
static inline void wrmsr(uint32_t msr, uint64_t value) {
uint32_t low = value & 0xFFFFFFFF;
uint32_t high = value >> 32;
asm volatile("wrmsr" : : "c"(msr), "a"(low), "d"(high));
}
extern void isr128_wrapper(void);
extern void* kmalloc(size_t size);
extern void kfree(void* ptr);
typedef struct {
void (*fn)(void *);
void *arg;
uint64_t pml4_phys;
volatile int *completion_counter;
} smp_user_task_t;
static void smp_user_wrapper(void *arg) {
smp_user_task_t *task = (smp_user_task_t *)arg;
if (!task) return;
uint64_t old_cr3;
asm volatile("mov %%cr3, %0" : "=r"(old_cr3));
// Switch to user address space if necessary
bool switch_cr3 = (task->pml4_phys != 0 && task->pml4_phys != old_cr3);
if (switch_cr3) {
asm volatile("mov %0, %%cr3" :: "r"(task->pml4_phys) : "memory");
}
if (task->fn) {
task->fn(task->arg);
}
if (switch_cr3) {
asm volatile("mov %0, %%cr3" :: "r"(old_cr3) : "memory");
}
if (task->completion_counter) {
__sync_fetch_and_add(task->completion_counter, -1);
}
}
void syscall_init(void) {
}
static void user_window_close(Window *win) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_CLOSE };
process_push_gui_event(proc, &ev);
}
static void user_window_paint(Window *win) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_PAINT };
process_push_gui_event(proc, &ev);
}
static void user_window_click(Window *win, int x, int y) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_CLICK, .arg1 = x, .arg2 = y };
process_push_gui_event(proc, &ev);
}
static void user_window_right_click(Window *win, int x, int y) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_RIGHT_CLICK, .arg1 = x, .arg2 = y };
process_push_gui_event(proc, &ev);
}
static void user_window_mouse_down(Window *win, int x, int y) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_MOUSE_DOWN, .arg1 = x, .arg2 = y };
process_push_gui_event(proc, &ev);
}
static void user_window_mouse_up(Window *win, int x, int y) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_MOUSE_UP, .arg1 = x, .arg2 = y };
process_push_gui_event(proc, &ev);
}
static void user_window_mouse_move(Window *win, int x, int y, uint8_t buttons) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = GUI_EVENT_MOUSE_MOVE, .arg1 = x, .arg2 = y, .arg3 = buttons };
process_push_gui_event(proc, &ev);
}
// Helper function for WM to send mouse events
void syscall_send_mouse_move_event(Window *win, int x, int y, uint8_t buttons) {
if (!win) return;
user_window_mouse_move(win, x, y, buttons);
}
void syscall_send_mouse_down_event(Window *win, int x, int y) {
if (!win) return;
user_window_mouse_down(win, x, y);
}
void syscall_send_mouse_up_event(Window *win, int x, int y) {
if (!win) return;
user_window_mouse_up(win, x, y);
}
static void user_window_key(Window *win, char c, bool pressed) {
process_t *proc = process_get_by_ui_window(win);
if (!proc) return;
gui_event_t ev = { .type = pressed ? GUI_EVENT_KEY : GUI_EVENT_KEYUP, .arg1 = (int)c, .arg3 = (int)ps2_ctrl_pressed };
process_push_gui_event(proc, &ev);
}
static void user_window_resize(Window *win, int w, int h) {
if (!win) return;
if (w <= 0 || h <= 0) return;
extern void* kmalloc(size_t size);
extern void kfree(void* ptr);
extern void serial_write(const char *str);
if (win->pixels) kfree(win->pixels);
if (win->comp_pixels) kfree(win->comp_pixels);
win->pixels = (uint32_t *)kmalloc(w * h * sizeof(uint32_t));
win->comp_pixels = (uint32_t *)kmalloc(w * h * sizeof(uint32_t));
win->w = w;
win->h = h;
if (win->pixels) {
extern void mem_memset(void *dest, int val, size_t len);
mem_memset(win->pixels, 0, w * h * sizeof(uint32_t));
}
}
static uint64_t syscall_handler_inner(registers_t *regs) {
uint64_t syscall_num = regs->rax;
uint64_t arg1 = regs->rdi;
uint64_t arg2 = regs->rsi;
uint64_t arg3 = regs->rdx;
uint64_t arg4 = regs->r10;
uint64_t arg5 = regs->r8;
extern void cmd_write(const char *str);
extern void serial_write(const char *str);
if (syscall_num == 1) { // SYS_WRITE
extern void cmd_write_len(const char *str, size_t len);
cmd_write_len((const char*)arg2, (size_t)arg3);
} else if (syscall_num == 3) { // SYS_GUI
int cmd = (int)arg1;
process_t *proc = process_get_current();
if (cmd == GUI_CMD_WINDOW_CREATE) {
extern void serial_write(const char *str);
serial_write("Kernel: GUI_CMD_WINDOW_CREATE\n");
const char *title = (const char *)arg2;
uint64_t *u_params = (uint64_t *)arg3;
if (!u_params) {
serial_write("Kernel: Error - params is NULL\n");
return 0;
}
// Copy params from user space to kernel space for safety
uint64_t params[4];
for (int i = 0; i < 4; i++) params[i] = u_params[i];
serial_write("Kernel: Window params copied.\n");
Window *win = kmalloc(sizeof(Window));
if (!win) {
serial_write("Kernel: Error - kmalloc failed for Window\n");
return 0;
}
serial_write("Kernel: Window allocated.\n");
extern void mem_memset(void *dest, int val, size_t len);
mem_memset(win, 0, sizeof(Window));
// Copy title from user space to kernel space so wm.c can access it safely
int title_len = 0;
if (title) {
while (title[title_len] && title_len < 255) title_len++;
}
char *kernel_title = kmalloc(title_len + 1);
if (kernel_title) {
for (int i = 0; i < title_len; i++) {
kernel_title[i] = title[i];
}
kernel_title[title_len] = '\0';
serial_write("Kernel: Title copied: ");
serial_write(kernel_title);
serial_write("\n");
} else {
serial_write("Kernel: Warning - kernel_title kmalloc failed\n");
}
// Basic initialization
win->title = kernel_title ? kernel_title : "Unknown";
win->x = (int)params[0];
win->y = (int)params[1];
win->w = (int)params[2];
win->h = (int)params[3];
serial_write("Kernel: Init win dims.\n");
// Sanity checks for dimensions
if (win->w <= 0 || win->w > 4096) win->w = 400;
if (win->h <= 0 || win->h > 4096) win->h = 400;
win->visible = true;
win->focused = true;
win->z_index = 0;
win->cursor_pos = 0;
win->data = proc;
win->font = NULL;
win->lock = SPINLOCK_INIT;
serial_write("Kernel: Dims initialized.\n");
size_t pixel_size = 0;
// Safe allocation
size_t client_h = win->h - 20;
if (win->w <= 0 || win->h <= 20) {
// Invalid dimensions, but prevent underflow/bad alloc
win->pixels = NULL;
win->comp_pixels = NULL;
} else {
pixel_size = (size_t)win->w * client_h * 4;
win->pixels = kmalloc(pixel_size);
win->comp_pixels = kmalloc(pixel_size);
}
serial_write("Kernel: Buffers allocated.\n");
if (win->pixels) {
extern void mem_memset(void *dest, int val, size_t len);
mem_memset(win->pixels, 0, pixel_size);
}
if (win->comp_pixels) {
extern void mem_memset(void *dest, int val, size_t len);
mem_memset(win->comp_pixels, 0, pixel_size);
}
serial_write("Kernel: Buffers cleared.\n");
// Set callbacks
win->paint = user_window_paint;
win->handle_click = user_window_click;
win->handle_right_click = user_window_right_click;
win->handle_close = user_window_close;
win->handle_key = user_window_key;
win->handle_resize = user_window_resize;
win->resizable = false; // Default to false, can be enabled via syscall
proc->ui_window = win;
wm_add_window(win);
return (uint64_t)win;
} else if (cmd == GUI_CMD_DRAW_RECT) {
Window *win = (Window *)arg2;
uint64_t *u_params = (uint64_t *)arg3;
uint32_t color = (uint32_t)arg4;
if (win && u_params) {
uint64_t params[4];
for (int i = 0; i < 4; i++) params[i] = u_params[i];
extern void draw_rect(int x, int y, int w, int h, uint32_t color);
extern void graphics_set_render_target(uint32_t *buffer, int w, int h);
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
if (win->pixels) {
// Strict user-to-window relative clamping
int rx = (int)params[0]; int ry = (int)params[1];
int rw = (int)params[2]; int rh = (int)params[3];
if (rx < 0) { rw += rx; rx = 0; }
if (ry < 0) { rh += ry; ry = 0; }
if (rx + rw > win->w) rw = win->w - rx;
if (ry + rh > (win->h - 20)) rh = (win->h - 20) - ry;
if (rw > 0 && rh > 0) {
graphics_set_render_target(win->pixels, win->w, win->h - 20);
draw_rect(rx, ry, rw, rh, color);
graphics_set_render_target(NULL, 0, 0);
}
} else {
draw_rect(win->x + params[0], win->y + params[1], params[2], params[3], color);
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == GUI_CMD_DRAW_ROUNDED_RECT_FILLED) {
Window *win = (Window *)arg2;
uint64_t *u_params = (uint64_t *)arg3;
uint32_t color = (uint32_t)arg4;
if (win && u_params) {
uint64_t params[5];
for (int i = 0; i < 5; i++) params[i] = u_params[i];
extern void draw_rounded_rect_filled(int x, int y, int w, int h, int radius, uint32_t color);
extern void graphics_set_render_target(uint32_t *buffer, int w, int h);
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
if (win->pixels) {
int rx = (int)params[0]; int ry = (int)params[1];
int rw = (int)params[2]; int rh = (int)params[3];
int rr = (int)params[4];
if (rx < 0) { rw += rx; rx = 0; }
if (ry < 0) { rh += ry; ry = 0; }
if (rx + rw > win->w) rw = win->w - rx;
if (ry + rh > (win->h - 20)) rh = (win->h - 20) - ry;
if (rw > 0 && rh > 0) {
graphics_set_render_target(win->pixels, win->w, win->h - 20);
draw_rounded_rect_filled(rx, ry, rw, rh, rr, color);
graphics_set_render_target(NULL, 0, 0);
}
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == GUI_CMD_DRAW_STRING) {
Window *win = (Window *)arg2;
uint64_t coords = arg3;
int ux = coords & 0xFFFFFFFF;
int uy = coords >> 32;
const char *user_str = (const char *)arg4;
uint32_t color = (uint32_t)arg5;
if (win && user_str) {
extern void draw_string(int x, int y, const char *str, uint32_t color);
extern void graphics_set_render_target(uint32_t *buffer, int w, int h);
// Copy string safely to kernel stack buffer
char kernel_str[256];
int i = 0;
while (i < 255 && user_str[i]) {
kernel_str[i] = user_str[i];
i++;
}
kernel_str[i] = 0;
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
ttf_font_t *font = win->font ? (ttf_font_t*)win->font : graphics_get_current_ttf();
if (win->pixels) {
if (ux >= -100 && ux < win->w && uy >= -100 && uy < (win->h - 20)) {
graphics_set_render_target(win->pixels, win->w, win->h - 20);
if (font) {
int baseline = uy + font_manager_get_font_ascent_scaled(font, font->pixel_height) - 2;
int cur_x = ux;
const char *s = kernel_str;
while (*s) {
uint32_t codepoint = utf8_decode(&s);
font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, font->pixel_height, put_pixel);
cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, font->pixel_height);
}
} else {
draw_string(ux, uy, kernel_str, color);
}
graphics_set_render_target(NULL, 0, 0);
}
} else {
if (font) {
int baseline = win->y + uy + font_manager_get_font_ascent_scaled(font, font->pixel_height) - 2;
int cur_x = win->x + ux;
const char *s = kernel_str;
while (*s) {
uint32_t codepoint = utf8_decode(&s);
font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, font->pixel_height, put_pixel);
cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, font->pixel_height);
}
} else {
draw_string(win->x + ux, win->y + uy, kernel_str, color);
}
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == 10) { // GUI_CMD_DRAW_STRING_BITMAP
Window *win = (Window *)arg2;
uint64_t coords = arg3;
int ux = coords & 0xFFFFFFFF;
int uy = coords >> 32;
const char *user_str = (const char *)arg4;
uint32_t color = (uint32_t)arg5;
if (win && user_str) {
extern void draw_string_bitmap(int x, int y, const char *str, uint32_t color);
extern void graphics_set_render_target(uint32_t *buffer, int w, int h);
// Copy string safely to kernel stack buffer
char kernel_str[256];
int i = 0;
while (i < 255 && user_str[i]) {
kernel_str[i] = user_str[i];
i++;
}
kernel_str[i] = 0;
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
if (win->pixels) {
if (ux >= -100 && ux < win->w && uy >= -100 && uy < (win->h - 20)) {
graphics_set_render_target(win->pixels, win->w, win->h - 20);
draw_string_bitmap(ux, uy, kernel_str, color);
graphics_set_render_target(NULL, 0, 0);
}
} else {
draw_string_bitmap(win->x + ux, win->y + uy, kernel_str, color);
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == 11) { // GUI_CMD_DRAW_STRING_SCALED
Window *win = (Window *)arg2;
uint64_t coords = arg3;
int ux = coords & 0xFFFFFFFF;
int uy = coords >> 32;
const char *user_str = (const char *)arg4;
uint64_t packed = arg5;
uint32_t color = packed & 0xFFFFFFFF;
uint32_t scale_bits = packed >> 32;
float scale = *(float*)&scale_bits;
if (win && user_str) {
extern void draw_string_scaled(int x, int y, const char *str, uint32_t color, float scale);
extern void graphics_set_render_target(uint32_t *buffer, int w, int h);
// Copy string safely to kernel stack buffer
char kernel_str[256];
int i = 0;
while (i < 255 && user_str[i]) {
kernel_str[i] = user_str[i];
i++;
}
kernel_str[i] = 0;
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
ttf_font_t *font = win->font ? (ttf_font_t*)win->font : graphics_get_current_ttf();
if (win->pixels) {
if (ux >= -100 && ux < win->w && uy >= -100 && uy < (win->h - 20)) {
graphics_set_render_target(win->pixels, win->w, win->h - 20);
if (font) {
int baseline = uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
int cur_x = ux;
const char *s = kernel_str;
while (*s) {
uint32_t codepoint = utf8_decode(&s);
font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, scale, put_pixel);
cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
}
} else {
draw_string_scaled(ux, uy, kernel_str, color, scale);
}
graphics_set_render_target(NULL, 0, 0);
}
} else {
if (font) {
int baseline = win->y + uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
int cur_x = win->x + ux;
const char *s = kernel_str;
while (*s) {
uint32_t codepoint = utf8_decode(&s);
font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, scale, put_pixel);
cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
}
} else {
draw_string_scaled(win->x + ux, win->y + uy, kernel_str, color, scale);
}
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == 18) { // GUI_CMD_DRAW_STRING_SCALED_SLOPED
Window *win = (Window *)arg2;
uint64_t coords = arg3;
int ux = coords & 0xFFFFFFFF;
int uy = coords >> 32;
const char *user_str = (const char *)arg4;
// Unpack color, scale, slope from arg5
uint64_t packed1 = arg5;
uint32_t color = packed1 & 0xFFFFFFFF;
uint32_t scale_bits = packed1 >> 32;
float scale = *(float*)&scale_bits;
// Slope is passed via arg6 in the system call, but syscall5 only takes 5 args.
// Oh right, we only have syscall5. Let's make a packed struct or just use a generic pointer for coords.
// Even better, let's just make it a pointer to a struct.
// Wait, I will just use `regs->r9` (arg6) directly since the syscall handler has access to all registers:
uint64_t arg6 = regs->r9;
uint32_t slope_bits = arg6 & 0xFFFFFFFF;
float slope = *(float*)&slope_bits;
if (win && user_str) {
extern void draw_string_scaled_sloped(int x, int y, const char *str, uint32_t color, float scale, float slope);
extern void graphics_set_render_target(uint32_t *buffer, int w, int h);
// Copy string safely to kernel stack buffer
char kernel_str[256];
int i = 0;
while (i < 255 && user_str[i]) {
kernel_str[i] = user_str[i];
i++;
}
kernel_str[i] = 0;
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
ttf_font_t *font = win->font ? (ttf_font_t*)win->font : graphics_get_current_ttf();
if (win->pixels) {
if (ux >= -100 && ux < win->w && uy >= -100 && uy < (win->h - 20)) {
graphics_set_render_target(win->pixels, win->w, win->h - 20);
if (font) {
int baseline = uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
int cur_x = ux;
const char *s = kernel_str;
while (*s) {
extern void font_manager_render_char_sloped(ttf_font_t *font, int x, int y, uint32_t codepoint, uint32_t color, float scale, float slope, void (*put_pixel_fn)(int, int, uint32_t));
uint32_t codepoint = utf8_decode(&s);
font_manager_render_char_sloped(font, cur_x, baseline, codepoint, color, scale, slope, put_pixel);
cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
}
} else {
draw_string_scaled_sloped(ux, uy, kernel_str, color, scale, slope);
}
graphics_set_render_target(NULL, 0, 0);
}
} else {
if (font) {
int baseline = win->y + uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
int cur_x = win->x + ux;
const char *s = kernel_str;
while (*s) {
extern void font_manager_render_char_sloped(ttf_font_t *font, int x, int y, uint32_t codepoint, uint32_t color, float scale, float slope, void (*put_pixel_fn)(int, int, uint32_t));
uint32_t codepoint = utf8_decode(&s);
font_manager_render_char_sloped(font, cur_x, baseline, codepoint, color, scale, slope, put_pixel);
cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
}
} else {
draw_string_scaled_sloped(win->x + ux, win->y + uy, kernel_str, color, scale, slope);
}
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == GUI_CMD_DRAW_IMAGE) {
Window *win = (Window *)arg2;
uint64_t *u_params = (uint64_t *)arg3;
uint32_t *image_data = (uint32_t *)arg4;
if (win && u_params && image_data) {
uint64_t params[4];
for (int i = 0; i < 4; i++) params[i] = u_params[i];
uint64_t rflags;
bool use_wm_lock = (win->pixels == NULL);
if (use_wm_lock) rflags = wm_lock_acquire();
else rflags = spinlock_acquire_irqsave(&win->lock);
if (win->pixels) {
int rx = (int)params[0]; int ry = (int)params[1];
int rw = (int)params[2]; int rh = (int)params[3];
int src_x_offset = 0;
int src_y_offset = 0;
if (rx < 0) { src_x_offset = -rx; rw += rx; rx = 0; }
if (ry < 0) { src_y_offset = -ry; rh += ry; ry = 0; }
if (rx + rw > win->w) rw = win->w - rx;
if (ry + rh > (win->h - 20)) rh = (win->h - 20) - ry;
if (rw > 0 && rh > 0) {
for (int y = 0; y < rh; y++) {
uint32_t *dest = &win->pixels[(ry + y) * win->w + rx];
uint32_t *src = &image_data[(src_y_offset + y) * (int)params[2] + src_x_offset];
for (int x = 0; x < rw; x++) {
uint32_t s = src[x];
uint8_t alpha = (s >> 24) & 0xFF;
if (alpha == 0xFF) {
dest[x] = s;
} else if (alpha == 0) {
// Skip
} else {
uint32_t d = dest[x];
uint32_t rb = ((s & 0xFF00FF) * alpha + (d & 0xFF00FF) * (255 - alpha)) >> 8;
uint32_t g = ((s & 0x00FF00) * alpha + (d & 0x00FF00) * (255 - alpha)) >> 8;
dest[x] = (rb & 0xFF00FF) | (g & 0x00FF00) | 0xFF000000;
}
}
}
}
}
if (use_wm_lock) wm_lock_release(rflags);
else spinlock_release_irqrestore(&win->lock, rflags);
}
} else if (cmd == GUI_CMD_MARK_DIRTY) {
uint64_t rflags = wm_lock_acquire();
Window *win = (Window *)arg2;
uint64_t *u_params = (uint64_t *)arg3;
if (win && u_params) {
uint64_t params[4];
for (int i = 0; i < 4; i++) params[i] = u_params[i];
// Dual-buffer commit: copy pixels to comp_pixels
if (win->pixels && win->comp_pixels) {
uint64_t win_rflags = spinlock_acquire_irqsave(&win->lock);
extern void mem_memcpy(void *dest, const void *src, size_t len);
mem_memcpy(win->comp_pixels, win->pixels, (size_t)win->w * (win->h - 20) * 4);
spinlock_release_irqrestore(&win->lock, win_rflags);
}
wm_mark_dirty(win->x + (int)params[0], win->y + (int)params[1], (int)params[2], (int)params[3]);
}
wm_lock_release(rflags);
} else if (cmd == GUI_CMD_GET_EVENT) {
Window *win = (Window *)arg2;
gui_event_t *ev_out = (gui_event_t *)arg3;
if (!ev_out) return 0;
if (proc->gui_event_head != proc->gui_event_tail) {
*ev_out = proc->gui_events[proc->gui_event_head];
proc->gui_event_head = (proc->gui_event_head + 1) % MAX_GUI_EVENTS;
return 1;
}
return 0;
} else if (cmd == GUI_CMD_GET_STRING_WIDTH) {
const char *user_str = (const char *)arg2;
if (!user_str) return 0;
char kernel_str[256];
int i = 0;
while (i < 255 && user_str[i]) {
kernel_str[i] = user_str[i];
i++;
}
kernel_str[i] = 0;
ttf_font_t *font = (proc->ui_window && ((Window*)proc->ui_window)->font) ? (ttf_font_t*)((Window*)proc->ui_window)->font : graphics_get_current_ttf();
if (font) {
return (uint64_t)font_manager_get_string_width_scaled(font, kernel_str, font->pixel_height);
} else {
return (uint64_t)i * 8; // Fallback bitmap width
}
} else if (cmd == 12) { // GUI_CMD_GET_STRING_WIDTH_SCALED
const char *user_str = (const char *)arg2;
uint32_t scale_bits = (uint32_t)arg3;
float scale = *(float*)&scale_bits;
if (!user_str) return 0;
char kernel_str[256];
int i = 0;
while (i < 255 && user_str[i]) {
kernel_str[i] = user_str[i];
i++;
}
kernel_str[i] = 0;
extern int graphics_get_string_width_scaled(const char *s, float scale);
ttf_font_t *font = (proc->ui_window && ((Window*)proc->ui_window)->font) ? (ttf_font_t*)((Window*)proc->ui_window)->font : graphics_get_current_ttf();
if (font) {
return (uint64_t)font_manager_get_string_width_scaled(font, kernel_str, scale);
} else {
return (uint64_t)i * 8; // Fallback
}
} else if (cmd == GUI_CMD_GET_FONT_HEIGHT) {
ttf_font_t *font = (proc->ui_window && ((Window*)proc->ui_window)->font) ? (ttf_font_t*)((Window*)proc->ui_window)->font : graphics_get_current_ttf();
if (font) {
return (uint64_t)font_manager_get_font_height_scaled(font, font->pixel_height);
}
return 10;
} else if (cmd == 14) { // GUI_CMD_WINDOW_SET_RESIZABLE
Window *win = (Window *)arg2;
if (win) {
extern void serial_write(const char *str);
serial_write("Kernel: Setting window resizable to ");
serial_write(arg3 ? "true\n" : "false\n");
win->resizable = (arg3 != 0);
}
return 0;
} else if (cmd == 13) { // GUI_CMD_GET_FONT_HEIGHT_SCALED
uint32_t scale_bits = (uint32_t)arg2;
float scale = *(float*)&scale_bits;
ttf_font_t *font = (proc->ui_window && ((Window*)proc->ui_window)->font) ? (ttf_font_t*)((Window*)proc->ui_window)->font : graphics_get_current_ttf();
if (font) {
return (uint64_t)font_manager_get_font_height_scaled(font, scale);
}
return 10;
} else if (cmd == 15) { // GUI_CMD_WINDOW_SET_TITLE
Window *win = (Window *)arg2;
const char *user_title = (const char *)arg3;
if (win && user_title) {
int title_len = 0;
while (user_title[title_len] && title_len < 255) title_len++;
char *kernel_title = kmalloc(title_len + 1);
if (kernel_title) {
for (int i = 0; i < title_len; i++) {
kernel_title[i] = user_title[i];
}
kernel_title[title_len] = '\0';
if (win->title && win->title != (char*)"Unknown") {
kfree(win->title);
}
win->title = kernel_title;
wm_mark_dirty(win->x, win->y - 20, win->w, 20); // Mark title bar dirty
wm_refresh();
}
}
return 0;
} else if (cmd == 16) { // GUI_CMD_SET_FONT
Window *win = (Window *)arg2;
const char *user_path = (const char *)arg3;
if (win && user_path) {
char kernel_path[256];
int i = 0;
while (i < 255 && user_path[i]) {
kernel_path[i] = user_path[i];
i++;
}
kernel_path[i] = 0;
ttf_font_t *new_font = font_manager_load(kernel_path, 15.0f);
if (new_font) {
win->font = new_font;
}
}
return 0;
} else if (cmd == GUI_CMD_GET_SCREEN_SIZE) {
uint64_t *out_w = (uint64_t *)arg2;
uint64_t *out_h = (uint64_t *)arg3;
if (out_w && out_h) {
extern int get_screen_width(void);
extern int get_screen_height(void);
*out_w = (uint64_t)get_screen_width();
*out_h = (uint64_t)get_screen_height();
}
return 0;
} else if (cmd == GUI_CMD_GET_SCREENBUFFER) {
uint32_t *dest = (uint32_t *)arg2;
if (dest) {
extern void graphics_copy_screenbuffer(uint32_t *dest);
graphics_copy_screenbuffer(dest);
}
return 0;
} else if (cmd == GUI_CMD_SHOW_NOTIFICATION) {
const char *user_msg = (const char *)arg2;
if (user_msg) {
char kernel_msg[256];
int i = 0;
while (i < 255 && user_msg[i]) {
kernel_msg[i] = user_msg[i];
i++;
}
kernel_msg[i] = 0;
extern void wm_show_notification(const char *msg);
wm_show_notification(kernel_msg);
}
return 0;
} else if (cmd == GUI_CMD_GET_DATETIME) {
uint64_t *out_arr = (uint64_t *)arg2;
if (out_arr) {
extern void rtc_get_datetime(int *year, int *month, int *day, int *hour, int *minute, int *second);
int y, m, d, h, min, s;
rtc_get_datetime(&y, &m, &d, &h, &min, &s);
out_arr[0] = y;
out_arr[1] = m;
out_arr[2] = d;
out_arr[3] = h;
out_arr[4] = min;
out_arr[5] = s;
}
return 0;
}
} else if (syscall_num == SYS_FS) {
int cmd = (int)arg1;
process_t *proc = process_get_current();
if (cmd == FS_CMD_OPEN) {
const char *path = (const char *)arg2;
const char *mode = (const char *)arg3;
if (!path || !mode) return -1;
FAT32_FileHandle *fh = fat32_open(path, mode);
if (!fh) return -1;
for (int i = 0; i < MAX_PROCESS_FDS; i++) {
if (proc->fds[i] == NULL) {
proc->fds[i] = fh;
return (uint64_t)i;
}
}
fat32_close(fh);
return -1;
} else if (cmd == FS_CMD_READ) {
int fd = (int)arg2;
void *buf = (void *)arg3;
uint32_t len = (uint32_t)arg4;
if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
return (uint64_t)fat32_read((FAT32_FileHandle*)proc->fds[fd], buf, (int)len);
} else if (cmd == FS_CMD_WRITE) {
int fd = (int)arg2;
const void *buf = (const void *)arg3;
uint32_t len = (uint32_t)arg4;
if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
return (uint64_t)fat32_write((FAT32_FileHandle*)proc->fds[fd], buf, (int)len);
} else if (cmd == FS_CMD_CLOSE) {
int fd = (int)arg2;
if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
fat32_close((FAT32_FileHandle*)proc->fds[fd]);
proc->fds[fd] = NULL;
return 0;
} else if (cmd == FS_CMD_SEEK) {
int fd = (int)arg2;
int offset = (int)arg3;
int whence = (int)arg4; // 0=SET, 1=CUR, 2=END
if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
return (uint64_t)fat32_seek((FAT32_FileHandle*)proc->fds[fd], offset, whence);
} else if (cmd == FS_CMD_TELL) {
int fd = (int)arg2;
if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
return (uint64_t)((FAT32_FileHandle*)proc->fds[fd])->position;
} else if (cmd == FS_CMD_SIZE) {
int fd = (int)arg2;
if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
return (uint64_t)((FAT32_FileHandle*)proc->fds[fd])->size;
}
else if (cmd == FS_CMD_LIST) {
const char *path = (const char *)arg2;
FAT32_FileInfo *entries = (FAT32_FileInfo *)arg3;
int max_entries = (int)arg4;
if (!path || !entries) return -1;
return (uint64_t)fat32_list_directory(path, entries, max_entries);
} else if (cmd == FS_CMD_DELETE) {
const char *path = (const char *)arg2;
if (!path) return -1;
return fat32_delete(path) ? 0 : -1;
} else if (cmd == FS_CMD_GET_INFO) {
const char *path = (const char *)arg2;
FAT32_FileInfo *info = (FAT32_FileInfo *)arg3;
if (!path || !info) return -1;
extern int fat32_get_info(const char *path, FAT32_FileInfo *info);
return (uint64_t)fat32_get_info(path, info);
} else if (cmd == FS_CMD_MKDIR) {
const char *path = (const char *)arg2;
if (!path) return -1;
return fat32_mkdir(path) ? 0 : -1;
} else if (cmd == FS_CMD_EXISTS) {
const char *path = (const char *)arg2;
if (!path) return 0;
return fat32_exists(path) ? 1 : 0;
} else if (cmd == FS_CMD_GETCWD) {
char *buf = (char *)arg2;
int size = (int)arg3;
if (!buf) return -1;
fat32_get_current_dir(buf, size);
return 0;
} else if (cmd == FS_CMD_CHDIR) {
const char *path = (const char *)arg2;
if (!path) return -1;
return fat32_chdir(path) ? 0 : -1;
}
return 0;
} else if (syscall_num == 8) { // DEBUG_SERIAL_WRITE
extern void serial_write(const char *str);
serial_write((const char *)arg2);
return 0;
} else if (syscall_num == 10) { // SYS_KILL
return 0; // Handled in outer
} else if (syscall_num == 9) { // SYS_SBRK
int incr = (int)arg1;
process_t *proc = process_get_current();
if (!proc || !proc->is_user) return (uint64_t)-1;
uint64_t old_end = proc->heap_end;
if (incr == 0) return old_end;
uint64_t new_end = old_end + incr;
// If expanding, we might need to map new pages
if (incr > 0) {
uint64_t start_page = (old_end + 0xFFF) & ~0xFFF;
uint64_t end_page = (new_end + 0xFFF) & ~0xFFF;
if (end_page > start_page) {
uint64_t total_size = end_page - start_page;
void *phys_block = kmalloc_aligned(total_size, 4096);
if (!phys_block) return (uint64_t)-1; // Out of memory
extern void mem_memset(void *dest, int val, size_t len);
mem_memset(phys_block, 0, total_size);
uint64_t phys_addr = (uint64_t)phys_block;
for (uint64_t page = start_page; page < end_page; page += 4096) {
paging_map_page(proc->pml4_phys, page, v2p(phys_addr), 0x07); // PT_PRESENT | PT_RW | PT_USER
phys_addr += 4096;
}
proc->used_memory += (end_page - start_page);
}
}
proc->heap_end = new_end;
return old_end;
} else if (syscall_num == 5) { // SYS_SYSTEM
int cmd = (int)arg1;
process_t *proc = process_get_current();
if (cmd == 1) { // SYSTEM_CMD_SET_BG_COLOR
uint32_t color = (uint32_t)arg2;
extern void graphics_set_bg_color(uint32_t color);
graphics_set_bg_color(color);
return 0;
} else if (cmd == 2) { // SYSTEM_CMD_SET_BG_PATTERN
uint32_t *user_pat = (uint32_t *)arg2;
if (!user_pat) {
graphics_set_bg_pattern(NULL);
} else {
static uint32_t global_bg_pattern[128*128];
for (int i=0; i<128*128; i++) {
global_bg_pattern[i] = user_pat[i];
}
graphics_set_bg_pattern(global_bg_pattern);
}
extern void wm_refresh(void);
wm_refresh();
return 0;
} else if (cmd == 3) { // SYSTEM_CMD_SET_WALLPAPER (Obsolete)
return -1;
} else if (cmd == 4) { // SYSTEM_CMD_SET_DESKTOP_PROP
int prop = (int)arg2;
int val = (int)arg3;
extern _Bool desktop_snap_to_grid;
extern _Bool desktop_auto_align;
extern int desktop_max_rows_per_col;
extern int desktop_max_cols;
if (prop == 1) desktop_snap_to_grid = val;
if (prop == 2) desktop_auto_align = val;
if (prop == 3) desktop_max_rows_per_col = val;
if (prop == 4) desktop_max_cols = val;
extern void wm_refresh_desktop(void);
wm_refresh_desktop();
return 0;
} else if (cmd == 5) { // SYSTEM_CMD_SET_MOUSE_SPEED
extern int mouse_speed;
mouse_speed = (int)arg2;
return 0;
} else if (cmd == 6) { // SYSTEM_CMD_NETWORK_INIT
extern int network_init(void);
return network_init();
} else if (cmd == 7) { // SYSTEM_CMD_GET_DESKTOP_PROP
int prop = (int)arg2;
extern _Bool desktop_snap_to_grid;
extern _Bool desktop_auto_align;
extern int desktop_max_rows_per_col;
extern int desktop_max_cols;
if (prop == 1) return desktop_snap_to_grid;
if (prop == 2) return desktop_auto_align;
if (prop == 3) return desktop_max_rows_per_col;
if (prop == 4) return desktop_max_cols;
return 0;
} else if (cmd == 8) { // SYSTEM_CMD_GET_MOUSE_SPEED
extern int mouse_speed;
return mouse_speed;
} else if (cmd == 9) { // SYSTEM_CMD_GET_WALLPAPER_THUMB (Obsolete)
return -1;
} else if (cmd == 10) { // SYSTEM_CMD_CLEAR_SCREEN
extern void cmd_screen_clear(void);
cmd_screen_clear();
return 0;
} else if (cmd == 11) { // SYSTEM_CMD_RTC_GET
int *dt = (int *)arg2;
if (!dt) return -1;
extern void rtc_get_datetime(int *y, int *m, int *d, int *h, int *min, int *s);
rtc_get_datetime(&dt[0], &dt[1], &dt[2], &dt[3], &dt[4], &dt[5]);
return 0;
} else if (cmd == 12) { // SYSTEM_CMD_REBOOT
k_reboot();
return 0;
} else if (cmd == 13) { // SYSTEM_CMD_SHUTDOWN
k_shutdown();
return 0;
} else if (cmd == 14) { // SYSTEM_CMD_BEEP
int freq = (int)arg2;
int ms = (int)arg3;
extern void k_beep(int freq, int ms);
k_beep(freq, ms);
return 0;
} else if (cmd == 15) { // SYSTEM_CMD_MEMINFO
uint64_t *out = (uint64_t *)arg2;
if (!out) return -1;
MemStats stats = memory_get_stats();
out[0] = stats.total_memory;
out[1] = stats.used_memory;
return 0;
} else if (cmd == 16) { // SYSTEM_CMD_UPTIME
return wm_get_ticks();
} else if (cmd == 17) { // SYSTEM_CMD_PCI_LIST
typedef struct {
uint16_t vendor;
uint16_t device;
uint8_t class_code;
uint8_t subclass;
} pci_info_t;
pci_info_t *info = (pci_info_t *)arg2;
int idx = (int)arg3;
if (!info) {
pci_device_t pci_devs[128];
return pci_enumerate_devices(pci_devs, 128);
}
pci_device_t pci_devs[128];
int count = pci_enumerate_devices(pci_devs, 128);
if (idx >= 0 && idx < count) {
info->vendor = pci_devs[idx].vendor_id;
info->device = pci_devs[idx].device_id;
info->class_code = pci_devs[idx].class_code;
info->subclass = pci_devs[idx].subclass;
return 0;
}
return -1;
} else if (cmd == 18) { // SYSTEM_CMD_NETWORK_DHCP
return network_dhcp_acquire();
} else if (cmd == 19) { // SYSTEM_CMD_NETWORK_GET_MAC
mac_address_t *mac = (mac_address_t *)arg2;
if (!mac) return -1;
return network_get_mac_address(mac);
} else if (cmd == 20) { // SYSTEM_CMD_NETWORK_GET_IP
ipv4_address_t *ip = (ipv4_address_t *)arg2;
if (!ip) return -1;
return network_get_ipv4_address(ip);
} else if (cmd == 21) { // SYSTEM_CMD_NETWORK_SET_IP
ipv4_address_t *ip = (ipv4_address_t *)arg2;
if (!ip) return -1;
return network_set_ipv4_address(ip);
} else if (cmd == 22) { // SYSTEM_CMD_UDP_SEND
ipv4_address_t *dest_ip = (ipv4_address_t *)arg2;
uint32_t ports = (uint32_t)arg3; // dest_port in lower 16, src_port in upper 16
uint16_t dest_port = ports & 0xFFFF;
uint16_t src_port = (ports >> 16) & 0xFFFF;
const void *data = (const void *)arg4;
size_t data_len = (size_t)arg5;
if (!dest_ip || !data) return -1;
return udp_send_packet(dest_ip, dest_port, src_port, data, data_len);
} else if (cmd == 23) { // SYSTEM_CMD_NETWORK_GET_STATS
int stat_type = (int)arg2;
switch (stat_type) {
case 0: return network_get_frames_received();
case 1: return network_get_udp_packets_received();
case 2: return network_get_frames_sent();
case 3: return network_get_e1000_receive_calls();
case 4: return network_get_e1000_receive_empty();
case 5: return network_get_process_calls();
default: return -1;
}
} else if (cmd == 24) { // SYSTEM_CMD_NETWORK_GET_GATEWAY
ipv4_address_t *ip = (ipv4_address_t *)arg2;
if (!ip) return -1;
return network_get_gateway_ip(ip);
} else if (cmd == 25) { // SYSTEM_CMD_NETWORK_GET_DNS
ipv4_address_t *ip = (ipv4_address_t *)arg2;
if (!ip) return -1;
return network_get_dns_ip(ip);
} else if (cmd == 26) { // SYSTEM_CMD_ICMP_PING
ipv4_address_t *dest_ip = (ipv4_address_t *)arg2;
if (!dest_ip) return -1;
extern int network_icmp_single_ping(ipv4_address_t *dest);
return (uint64_t)network_icmp_single_ping(dest_ip);
} else if (cmd == 27) { // SYSTEM_CMD_NETWORK_IS_INIT
return network_is_initialized() ? 1 : 0;
} else if (cmd == 30) { // SYSTEM_CMD_NETWORK_HAS_IP
return network_has_ip() ? 1 : 0;
} else if (cmd == 28) { // SYSTEM_CMD_GET_SHELL_CONFIG
const char *key = (const char *)arg2;
if (!key) return -1;
return cmd_get_config_value(key);
} else if (cmd == 29) { // SYSTEM_CMD_SET_TEXT_COLOR
uint32_t color = (uint32_t)arg2;
cmd_set_current_color(color);
return 0;
} else if (cmd == 31) { // SYSTEM_CMD_SET_WALLPAPER_PATH
const char *user_path = (const char *)arg2;
if (!user_path) return -1;
// Copy path safely to kernel buffer
char kernel_path[256];
int i = 0;
while (i < 255 && user_path[i]) {
kernel_path[i] = user_path[i];
i++;
}
kernel_path[i] = 0;
extern void wallpaper_request_set_from_file(const char *path);
wallpaper_request_set_from_file(kernel_path);
return 0;
} else if (cmd == 32) { // SYSTEM_CMD_RTC_SET
int *dt = (int *)arg2;
if (!dt) return -1;
extern void rtc_set_datetime(int y, int m, int d, int h, int min, int s);
rtc_set_datetime(dt[0], dt[1], dt[2], dt[3], dt[4], dt[5]);
return 0;
} else if (cmd == 33) { // SYSTEM_CMD_TCP_CONNECT
ipv4_address_t *ip = (ipv4_address_t *)arg2;
uint16_t port = (uint16_t)arg3;
extern int network_tcp_connect(const ipv4_address_t *ip, uint16_t port);
return (uint64_t)network_tcp_connect(ip, port);
} else if (cmd == 34) { // SYSTEM_CMD_TCP_SEND
const void *data = (const void *)arg2;
size_t len = (size_t)arg3;
extern int network_tcp_send(const void *data, size_t len);
return (uint64_t)network_tcp_send(data, len);
} else if (cmd == 35) { // SYSTEM_CMD_TCP_RECV
void *buf = (void *)arg2;
size_t max_len = (size_t)arg3;
extern int network_tcp_recv(void *buf, size_t max_len);
return (uint64_t)network_tcp_recv(buf, max_len);
} else if (cmd == 36) { // SYSTEM_CMD_TCP_CLOSE
extern int network_tcp_close(void);
return (uint64_t)network_tcp_close();
} else if (cmd == 37) { // SYSTEM_CMD_DNS_LOOKUP
const char *user_name = (const char *)arg2;
ipv4_address_t *out_ip = (ipv4_address_t *)arg3;
char name_buf[256];
int i = 0;
while (i < 255 && user_name[i]) { name_buf[i] = user_name[i]; i++; }
name_buf[i] = 0;
extern int network_dns_lookup(const char *name, ipv4_address_t *out_ip);
return (uint64_t)network_dns_lookup(name_buf, out_ip);
} else if (cmd == 38) { // SYSTEM_CMD_SET_DNS
ipv4_address_t *ip = (ipv4_address_t *)arg2;
extern int network_set_dns_server(const ipv4_address_t *ip);
return (uint64_t)network_set_dns_server(ip);
} else if (cmd == 39) { // SYSTEM_CMD_NET_UNLOCK
extern void network_force_unlock(void);
network_force_unlock();
return 0;
} else if (cmd == 40) { // SYSTEM_CMD_SET_FONT
const char *user_path = (const char *)arg2;
if (!user_path) return -1;
// Copy font path from userland
char path[128];
int i;
for (i = 0; i < 127 && user_path[i]; i++) {
path[i] = user_path[i];
}
path[i] = 0;
graphics_set_font(path);
return 0;
} else if (cmd == 41) { // SYSTEM_CMD_SET_RAW_MODE
extern void cmd_set_raw_mode(bool enabled);
cmd_set_raw_mode((bool)arg2);
return 0;
} else if (cmd == 42) { // SYSTEM_CMD_TCP_RECV_NB
void *buf = (void *)arg2;
size_t max_len = (size_t)arg3;
extern int network_tcp_recv_nb(void *buf, size_t max_len);
return (uint64_t)network_tcp_recv_nb(buf, max_len);
} else if (cmd == SYSTEM_CMD_PROCESS_LIST) {
ProcessInfo *out = (ProcessInfo *)arg2;
int max_procs = (int)arg3;
if (!out) return 0;
extern process_t processes[];
// Dynamically calculate kernel usage as: Total System Used - User Process Sum
MemStats stats = memory_get_stats();
size_t total_used = stats.used_memory;
size_t user_used = 0;
for (int i = 0; i < 16; i++) {
if (processes[i].pid != 0xFFFFFFFF && processes[i].pid != 0 && processes[i].is_user) {
user_used += processes[i].used_memory;
}
}
if (total_used > user_used) processes[0].used_memory = total_used - user_used;
else processes[0].used_memory = 0;
int count = 0;
for (int i = 0; i < 16; i++) {
if (processes[i].pid != 0xFFFFFFFF && (processes[i].is_user || processes[i].pid == 0)) {
out[count].pid = processes[i].pid;
extern void mem_memcpy(void *dest, const void *src, size_t len);
mem_memcpy(out[count].name, processes[i].name, 64);
if (processes[i].pid == 0) {
out[count].name[0] = 'k'; out[count].name[1] = 'e'; out[count].name[2] = 'r';
out[count].name[3] = 'n'; out[count].name[4] = 'e'; out[count].name[5] = 'l';
out[count].name[6] = '\0';
}
out[count].ticks = processes[i].ticks;
out[count].used_memory = processes[i].used_memory;
count++;
if (count >= max_procs) break;
}
}
return (uint64_t)count;
} else if (cmd == SYSTEM_CMD_GET_CPU_MODEL) {
char *user_buf = (char *)arg2;
if (!user_buf) return -1;
char model[64];
platform_get_cpu_model(model);
extern void mem_memcpy(void *dest, const void *src, size_t len);
mem_memcpy(user_buf, model, 49);
return 0;
} else if (cmd == 47) { // SYSTEM_CMD_SET_RESOLUTION
uint16_t req_w = (uint16_t)arg2;
uint16_t req_h = (uint16_t)arg3;
uint16_t req_bpp = (uint16_t)arg4;
int req_color_mode = (int)arg5;
extern bool vga_set_mode(uint16_t width, uint16_t height, uint16_t bpp, void **out_framebuffer);
extern void graphics_update_resolution(int width, int height, int bpp, void* fb_addr, int color_mode);
extern void wm_refresh(void);
extern void vga_set_palette_grayscale(void);
extern void vga_set_palette_standard(void);
void *new_fb = NULL;
if (vga_set_mode(req_w, req_h, req_bpp, &new_fb)) {
if (req_color_mode == 1 || req_color_mode == 2) {
vga_set_palette_grayscale();
} else if (req_bpp <= 8) {
vga_set_palette_standard();
}
graphics_update_resolution(req_w, req_h, req_bpp, new_fb, req_color_mode);
wm_refresh();
return 0;
}
return -1;
} else if (cmd == 48) { // SYSTEM_CMD_NETWORK_GET_NIC_NAME
char *user_buf = (char *)arg2;
if (!user_buf) return -1;
char name_buf[64];
extern int network_get_nic_name(char *name_out);
if (network_get_nic_name(name_buf) == 0) {
extern void mem_memcpy(void *dest, const void *src, size_t len);
size_t len = 0;
while (name_buf[len] && len < 63) len++;
name_buf[len] = 0;
mem_memcpy(user_buf, name_buf, len + 1);
return 0;
}
return -1;
} else if (cmd == 49) { // SYSTEM_CMD_GET_OS_INFO
os_info_t *info = (os_info_t *)arg2;
if (!info) return -1;
extern void get_os_info(os_info_t *info);
get_os_info(info);
return 0;
} else if (cmd == SYSTEM_CMD_PARALLEL_RUN) {
void (*user_fn)(void*) = (void (*)(void*))arg2;
void **args = (void **)arg3;
int count = (int)arg4;
if (count <= 0) return 0;
if (count > 64) count = 64;
volatile int completion_counter = count;
uint64_t current_pml4 = proc->pml4_phys;
smp_user_task_t tasks[64];
for (int i = 0; i < count; i++) {
tasks[i].fn = user_fn;
tasks[i].arg = args[i];
tasks[i].pml4_phys = current_pml4;
tasks[i].completion_counter = &completion_counter;
extern void work_queue_submit(void (*fn)(void*), void *arg);
work_queue_submit(smp_user_wrapper, &tasks[i]);
}
extern bool work_queue_drain_one(void);
while (completion_counter > 0) {
if (!work_queue_drain_one()) {
asm volatile("pause");
}
}
return 0;
}
return -1;
}
return 0;
}
uint64_t syscall_handler_c(registers_t *regs) {
uint64_t syscall_num = regs->rax;
// Check for context-switching syscalls
if (syscall_num == 0 || syscall_num == 60) { // EXIT
return process_terminate_current();
}
if (syscall_num == 10) { // KILL
uint32_t target_pid = (uint32_t)regs->rdi;
process_t *current = process_get_current();
if (target_pid == 0) {
// Protect kernel process
regs->rax = -1;
return (uint64_t)regs;
}
if (target_pid == 0xFFFFFFFF || target_pid == current->pid) {
return process_terminate_current();
} else {
process_t *target = process_get_by_pid(target_pid);
if (target) {
process_terminate(target);
}
regs->rax = 0;
return (uint64_t)regs;
}
}
if (syscall_num == 5 && regs->rdi == 43) { // SYSTEM_CMD_YIELD
extern uint64_t process_schedule(uint64_t current_rsp);
regs->rax = 0;
return process_schedule((uint64_t)regs);
}
if (syscall_num == 5 && regs->rdi == 46) { // SYSTEM_CMD_SLEEP
uint32_t ms = (uint32_t)regs->rsi;
process_t *proc = process_get_current();
extern uint32_t wm_get_ticks(void);
uint32_t ticks = ms / 16;
if (ticks == 0 && ms > 0) ticks = 1;
proc->sleep_until = wm_get_ticks() + ticks;
regs->rax = 0;
return process_schedule((uint64_t)regs);
}
// Normal syscalls
regs->rax = syscall_handler_inner(regs);
// Return current RSP to assembly wrapper
return (uint64_t)regs;
}
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