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authorAlex Auvolat <alex.auvolat@ens.fr>2015-02-09 17:39:41 +0100
committerAlex Auvolat <alex.auvolat@ens.fr>2015-02-09 17:40:03 +0100
commitf2c51bc81d2aa618b29ddbeaae5ac1c5308821f0 (patch)
treefae67a79d5e60128d074550326a05216694a5848 /kernel/l0/kmain.c
parenta5dfdd2b3fa91a2cda4f807c88bd35928e3c7a61 (diff)
downloadkogata-f2c51bc81d2aa618b29ddbeaae5ac1c5308821f0.tar.gz
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Reorganize all.
Diffstat (limited to 'kernel/l0/kmain.c')
-rw-r--r--kernel/l0/kmain.c214
1 files changed, 0 insertions, 214 deletions
diff --git a/kernel/l0/kmain.c b/kernel/l0/kmain.c
deleted file mode 100644
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--- a/kernel/l0/kmain.c
+++ /dev/null
@@ -1,214 +0,0 @@
-#include <multiboot.h>
-#include <config.h>
-#include <dbglog.h>
-#include <sys.h>
-
-#include <gdt.h>
-#include <idt.h>
-#include <frame.h>
-#include <paging.h>
-#include <region.h>
-#include <kmalloc.h>
-
-#include <thread.h>
-
-#include <slab_alloc.h>
-#include <hashtbl.h>
-
-extern const void k_end_addr; // defined in linker script : 0xC0000000 plus kernel stuff
-
-void breakpoint_handler(registers_t *regs) {
- dbg_printf("Breakpoint! (int3)\n");
- BOCHS_BREAKPOINT;
-}
-
-void region_test1() {
- void* p = region_alloc(0x1000, "Test region", 0);
- dbg_printf("Allocated one-page region: 0x%p\n", p);
- dbg_print_region_info();
- void* q = region_alloc(0x1000, "Test region", 0);
- dbg_printf("Allocated one-page region: 0x%p\n", q);
- dbg_print_region_info();
- void* r = region_alloc(0x2000, "Test region", 0);
- dbg_printf("Allocated two-page region: 0x%p\n", r);
- dbg_print_region_info();
- void* s = region_alloc(0x10000, "Test region", 0);
- dbg_printf("Allocated 16-page region: 0x%p\n", s);
- dbg_print_region_info();
- region_free(p);
- dbg_printf("Freed region 0x%p\n", p);
- dbg_print_region_info();
- region_free(q);
- dbg_printf("Freed region 0x%p\n", q);
- dbg_print_region_info();
- region_free(r);
- dbg_printf("Freed region 0x%p\n", r);
- dbg_print_region_info();
- region_free(s);
- dbg_printf("Freed region 0x%p\n", s);
- dbg_print_region_info();
-}
-
-void region_test2() {
- // allocate a big region and try to write into it
- dbg_printf("Begin region test 2...");
- const size_t n = 200;
- void* p0 = region_alloc(n * PAGE_SIZE, "Test big region", default_allocator_pf_handler);
- for (size_t i = 0; i < n; i++) {
- uint32_t *x = (uint32_t*)(p0 + i * PAGE_SIZE);
- x[0] = 12;
- x[1] = (i * 20422) % 122;
- }
- // unmap memory
- for (size_t i = 0; i < n; i++) {
- void* p = p0 + i * PAGE_SIZE;
- uint32_t *x = (uint32_t*)p;
- ASSERT(x[1] == (i * 20422) % 122);
-
- uint32_t f = pd_get_frame(p);
- ASSERT(f != 0);
- pd_unmap_page(p);
- ASSERT(pd_get_frame(p) == 0);
-
- frame_free(f, 1);
- }
- region_free(p0);
- dbg_printf("OK\n");
-}
-
-void kmalloc_test(void* kernel_data_end) {
- // Test kmalloc !
- dbg_print_region_info();
- dbg_printf("Begin kmalloc test...\n");
- const int m = 200;
- uint16_t** ptr = kmalloc(m * sizeof(uint32_t));
- for (int i = 0; i < m; i++) {
- size_t s = 1 << ((i * 7) % 11 + 2);
- ptr[i] = (uint16_t*)kmalloc(s);
- ASSERT((void*)ptr[i] >= kernel_data_end && (size_t)ptr[i] < 0xFFC00000);
- *ptr[i] = ((i * 211) % 1024);
- }
- dbg_printf("Fully allocated.\n");
- dbg_print_region_info();
- for (int i = 0; i < m; i++) {
- for (int j = i; j < m; j++) {
- ASSERT(*ptr[j] == (j * 211) % 1024);
- }
- kfree(ptr[i]);
- }
- kfree(ptr);
- dbg_printf("Kmalloc test OK.\n");
- dbg_print_region_info();
-}
-
-void test_hashtbl_1() {
- // hashtable test
- hashtbl_t *ht = create_hashtbl(str_key_eq_fun, str_hash_fun, 0);
- hashtbl_add(ht, "test1", "Hello, world [test1]");
- hashtbl_add(ht, "test2", "Hello, world [test2]");
- dbg_printf("ht[test1] = %s\n", hashtbl_find(ht, "test1"));
- dbg_printf("ht[test] = %s\n", hashtbl_find(ht, "test"));
- dbg_printf("ht[test2] = %s\n", hashtbl_find(ht, "test2"));
- dbg_printf("adding test...\n");
- hashtbl_add(ht, "test", "Forever alone");
- dbg_printf("ht[test1] = %s\n", hashtbl_find(ht, "test1"));
- dbg_printf("ht[test] = %s\n", hashtbl_find(ht, "test"));
- dbg_printf("ht[test2] = %s\n", hashtbl_find(ht, "test2"));
- dbg_printf("removing test1...\n");
- hashtbl_remove(ht, "test1");
- dbg_printf("ht[test1] = %s\n", hashtbl_find(ht, "test1"));
- dbg_printf("ht[test] = %s\n", hashtbl_find(ht, "test"));
- dbg_printf("ht[test2] = %s\n", hashtbl_find(ht, "test2"));
- delete_hashtbl(ht);
-}
-
-void test_hashtbl_2() {
- hashtbl_t *ht = create_hashtbl(id_key_eq_fun, id_hash_fun, 0);
- hashtbl_add(ht, (void*)12, "Hello, world [12]");
- hashtbl_add(ht, (void*)777, "Hello, world [777]");
- dbg_printf("ht[12] = %s\n", hashtbl_find(ht, (void*)12));
- dbg_printf("ht[144] = %s\n", hashtbl_find(ht, (void*)144));
- dbg_printf("ht[777] = %s\n", hashtbl_find(ht, (void*)777));
- dbg_printf("adding 144...\n");
- hashtbl_add(ht, (void*)144, "Forever alone");
- dbg_printf("ht[12] = %s\n", hashtbl_find(ht, (void*)12));
- dbg_printf("ht[144] = %s\n", hashtbl_find(ht, (void*)144));
- dbg_printf("ht[777] = %s\n", hashtbl_find(ht, (void*)777));
- dbg_printf("removing 12...\n");
- hashtbl_remove(ht, (void*)12);
- dbg_printf("ht[12] = %s\n", hashtbl_find(ht, (void*)12));
- dbg_printf("ht[144] = %s\n", hashtbl_find(ht, (void*)144));
- dbg_printf("ht[777] = %s\n", hashtbl_find(ht, (void*)777));
- delete_hashtbl(ht);
-}
-
-void test_thread(void* a) {
- for(int i = 0; i < 120; i++) {
- dbg_printf("b");
- for (int x = 0; x < 100000; x++) asm volatile("xor %%ebx, %%ebx":::"%ebx");
- if (i % 8 == 0) yield();
- }
-}
-void kernel_init_stage2(void* data) {
- dbg_print_region_info();
- dbg_print_frame_stats();
-
- test_hashtbl_1();
- test_hashtbl_2();
-
- thread_t *tb = new_thread(test_thread, 0);
- resume_thread(tb, false);
-
- for (int i = 0; i < 120; i++) {
- dbg_printf("a");
- for (int x = 0; x < 100000; x++) asm volatile("xor %%ebx, %%ebx":::"%ebx");
- }
- PANIC("Reached kmain end! Falling off the edge.");
-}
-
-void kmain(struct multiboot_info_t *mbd, int32_t mb_magic) {
- dbglog_setup();
-
- dbg_printf("Hello, kernel world!\n");
- dbg_printf("This is %s, version %s.\n", OS_NAME, OS_VERSION);
-
- ASSERT(mb_magic == MULTIBOOT_BOOTLOADER_MAGIC);
-
- gdt_init(); dbg_printf("GDT set up.\n");
-
- idt_init(); dbg_printf("IDT set up.\n");
- idt_set_ex_handler(EX_BREAKPOINT, breakpoint_handler);
- asm volatile("int $0x3"); // test breakpoint
-
- size_t total_ram = ((mbd->mem_upper + mbd->mem_lower) * 1024);
- dbg_printf("Total ram: %d Kb\n", total_ram / 1024);
-
- // used for allocation of data structures before malloc is set up
- // a pointer to this pointer is passed to the functions that might have
- // to allocate memory ; they just increment it of the allocated quantity
- void* kernel_data_end = (void*)&k_end_addr;
-
- frame_init_allocator(total_ram, &kernel_data_end);
- dbg_printf("kernel_data_end: 0x%p\n", kernel_data_end);
- dbg_print_frame_stats();
-
- paging_setup(kernel_data_end);
- dbg_printf("Paging seems to be working!\n");
-
- BOCHS_BREAKPOINT;
-
- region_allocator_init(kernel_data_end);
- region_test1();
- region_test2();
-
- kmalloc_setup();
- kmalloc_test(kernel_data_end);
-
- // enter multi-threading mode
- // interrupts are enabled at this moment, so all
- // code run from now on should be preemtible (ie thread-safe)
- threading_setup(kernel_init_stage2, 0);
- PANIC("Should never come here.");
-}
-
-/* vim: set ts=4 sw=4 tw=0 noet :*/