MAJOR RESTRUCTURE

backup/libk/syscalls/sys_close.c

@@ -0,0 +1,9 @@
+#include <syscalls/syscalls.h>
+#include <cpu/isr.h>
+#include <stdio.h>
+
+int sys_close(intFrame_t* iframe) {
+    // TODO
+    return -1;
+}
+

backup/libk/syscalls/sys_exit.c

@@ -0,0 +1,9 @@
+#include <syscalls/syscalls.h>
+#include <drivers/serial.h>
+#include <cpu/isr.h>
+
+int sys_exit(intFrame_t* iframe) {
+    debugf("Tried to exit with %d", iframe->eax);
+    return iframe->eax;
+}
+

backup/libk/syscalls/sys_free.c

@@ -0,0 +1,10 @@
+#include <syscalls/syscalls.h>
+#include <memory/malloc.h>
+#include <cpu/isr.h>
+
+int sys_free(intFrame_t* iframe) {
+    void* ptr = (void*)iframe->ebx;
+    mallocFree(ptr);
+    return 0;
+}
+

backup/libk/syscalls/sys_malloc.c

@@ -0,0 +1,18 @@
+#include <syscalls/syscalls.h>
+#include <memory/malloc.h>
+#include <cpu/isr.h>
+#include <stddef.h>
+
+int sys_malloc(intFrame_t* iframe) {
+    size_t count = iframe->ebx;
+    
+    // First Malloc()
+    if (!mallocListHead) {
+        mallocInit(count); // Setup malloc linked list
+    }
+
+    void* ptr = mallocNextNode(count);
+    mallocMergeFree();
+
+    return (size_t)ptr;
+}

backup/libk/syscalls/sys_open.c

@@ -0,0 +1,9 @@
+#include <syscalls/syscalls.h>
+#include <cpu/isr.h>
+#include <stdio.h>
+
+int sys_open(intFrame_t* iframe) {
+    // TODO
+    return -1;
+}
+

backup/libk/syscalls/sys_read.c

@@ -0,0 +1,11 @@
+#include <syscalls/syscalls.h>
+#include <cpu/isr.h>
+#include <stdio.h>
+
+int sys_read(intFrame_t* iframe) {
+    char* s = (char*)iframe->ebx;
+    gets(s, 0xffffffff);
+
+    return 0;
+}
+

backup/libk/syscalls/sys_seek.c

@@ -0,0 +1,8 @@
+#include <syscalls/syscalls.h>
+#include <cpu/isr.h>
+
+int sys_seek(intFrame_t* iframe) {
+    // TODO
+    return -1;
+}
+

backup/libk/syscalls/sys_sleep.c

@@ -0,0 +1,14 @@
+#include <syscalls/syscalls.h>
+#include <memory/addresses.h>
+#include <cpu/isr.h>
+#include <stdint.h>
+
+int sys_sleep(intFrame_t* iframe) {
+    uint32_t* sleepTimerTicks = (uint32_t*)SLEEP_TIMER;
+    *sleepTimerTicks = iframe->ebx;
+
+    while (*sleepTimerTicks > 0) { __asm__ volatile ("sti; hlt"); }
+
+    return 0;
+}
+

backup/libk/syscalls/sys_write.c

@@ -0,0 +1,15 @@
+#include <syscalls/syscalls.h>
+#include <screen/tty.h>
+#include <cpu/isr.h>
+#include <stddef.h>
+
+int sys_write(intFrame_t* iframe) {
+    int fd = iframe->ebx;
+    void* buf = (void*)iframe->ecx;
+    size_t len = iframe->edx;
+
+    if (fd == 1) {
+        return consoleWrite(buf, len);
+    } else { return -1; }
+}
+

backup/libk/syscalls/syscalls.c

@@ -0,0 +1,28 @@
+#include <syscalls/syscalls.h>
+#include <drivers/serial.h>
+#include <cpu/isr.h>
+#include <syscall.h>
+
+// System call table
+int (*syscalls[SYSCALL_COUNT])(intFrame_t*) = {
+    [SYS_EXIT]      = sys_exit,
+    [SYS_READ]      = sys_read, 
+    [SYS_WRITE]     = sys_write,
+    [SYS_OPEN]      = sys_open,
+    [SYS_CLOSE]     = sys_close,
+    [SYS_SEEK]      = sys_seek,
+    [SYS_MALLOC]    = sys_malloc,
+    [SYS_FREE]      = sys_free,
+    [SYS_SLEEP]     = sys_sleep,
+};
+    
+// Syscall handler
+int syscallHandler(intFrame_t* iframe) {
+    if (iframe->eax > SYSCALL_COUNT-1) { // Syscall doesn't exist
+        debugf("Error: Syscall(%d) does not exist!\n", iframe->eax);
+        return -1;
+    }
+
+    return syscalls[iframe->eax](iframe);
+}
+