Fixed Module loader

This commit is contained in:
notsomeidiot123 2025-08-17 18:14:15 -04:00
parent 51af16b61e
commit 57aada680b
5 changed files with 23 additions and 15 deletions

View File

@ -96,7 +96,7 @@ void _isr_handler(cpu_registers_t *regs){
printf("Error Code: %x\n", regs->pfa); printf("Error Code: %x\n", regs->pfa);
if (regs->int_no == 14){ if (regs->int_no == 14){
uint32_t cr2; uint32_t cr2;
asm volatile("mov %%cr3, %%eax;mov %0, %%eax": "=r"(cr2)); asm volatile("mov %%cr2, %%eax;mov %0, %%eax": "=r"(cr2));
printf("Address: %x", cr2); printf("Address: %x", cr2);
} }
for(;;); for(;;);

View File

@ -9,7 +9,7 @@ char *flags[] = {"---", "X--", "-W-", "XW-", "--R", "X-R", "-WR", "XWR"};
void *load_segment(program_entry_t entry, void *file_data, void *base_segment, uint32_t map_flags){ void *load_segment(program_entry_t entry, void *file_data, void *base_segment, uint32_t map_flags){
// mlog("ELFLOAD", "p_addr: %d\n", MLOG_DEBUG, entry.paddr); // mlog("ELFLOAD", "p_addr: %d\n", MLOG_DEBUG, entry.paddr);
printf("Type: %x, Flags: %s, Vaddr: %x, Offset: %x, Size: %x, Align: %x\n", entry.type, flags[entry.flags], entry.vaddr, entry.data_offset, entry.msize, entry.alignment); printf("Type: %x, Flags: %s, Vaddr: %x, Offset: %x, Size: %x, Align: %x\n", entry.type, flags[entry.flags], entry.paddr, entry.data_offset, entry.msize, entry.alignment);
uint32_t *segment; uint32_t *segment;
uint32_t data_offset = ((elf_header_t *)file_data)->entry_offset; uint32_t data_offset = ((elf_header_t *)file_data)->entry_offset;
printf("Base: %x\n", base_segment); printf("Base: %x\n", base_segment);
@ -23,12 +23,12 @@ void *load_segment(program_entry_t entry, void *file_data, void *base_segment, u
segment = base_segment + (entry.vaddr & 0xfffff000); segment = base_segment + (entry.vaddr & 0xfffff000);
uint32_t count = 1; uint32_t count = 1;
count += ((entry.vaddr+entry.msize) - entry.vaddr) ? 1 : 0; count += ((entry.vaddr+entry.msize) - entry.vaddr) ? 1 : 0;
count += entry.msize/4096; count += entry.msize/4096 + 1;
printf("count: %x\n", count); // printf("count: %x\n", count);
// for (;;); // for (;;);
for(uint32_t i = 0; i < count; i++){ for(uint32_t i = 0; i < count; i++){
map(segment + (i << 12), (void *)pm_alloc(), PT_PRESENT | map_flags); map(segment + (i << 12)/4, (void *)pm_alloc(), PT_PRESENT | map_flags);
printf("Mapping : %x\n", segment + (i << 12)); // printf("Mapping : %x\n", segment + (i << 12)/4);
} }
} }
for(uint32_t i = 0; i < entry.fsize/sizeof(uint32_t) + 1; i++){ for(uint32_t i = 0; i < entry.fsize/sizeof(uint32_t) + 1; i++){
@ -65,10 +65,12 @@ void *load_elf(void *file_data, uint32_t map_flags){
base_segment = load_segment(program_header[i], file_data, base_segment, map_flags); base_segment = load_segment(program_header[i], file_data, base_segment, map_flags);
} }
// void (*vt)(void) = base_segment; // void (*vt)(void) = base_segment;
uint32_t (*vt)(uint32_t) = base_segment + 0x1000; void (*vt)(uint32_t) = base_segment + header->entry_offset;
// printf("%x", *vt); // printf("%x", *vt);
uint32_t i = (*vt)(0); (*vt)(0);
printf("%x\n", i); // printf("%x\n", i);
for(;;); // for(;;);
// (*vt)(); // (*vt)();
printf(":D\n");
return 0;
} }

View File

@ -8,6 +8,7 @@
void init_modules(kernel_info_t *kernel_info){ void init_modules(kernel_info_t *kernel_info){
mlog(MODULE_NAME, "Initializing Boot-Time Modules\n", MLOG_PRINT); mlog(MODULE_NAME, "Initializing Boot-Time Modules\n", MLOG_PRINT);
kernel_module_t *module = kernel_info->loaded_modules; kernel_module_t *module = kernel_info->loaded_modules;
uint32_t i = 0;
while(module){ while(module){
if(!module->ptr){ if(!module->ptr){
continue; continue;
@ -15,8 +16,8 @@ void init_modules(kernel_info_t *kernel_info){
// printf("Module Type: %x, Module Size (Bytes): %x, Ptr: %x\n", module->type, module->size, module->ptr); // printf("Module Type: %x, Module Size (Bytes): %x, Ptr: %x\n", module->type, module->size, module->ptr);
load_elf(module->ptr, 0); load_elf(module->ptr, 0);
mlog(MODULE_NAME, "Loaded module of type %x\n", MLOG_PRINT, module->type); mlog(MODULE_NAME, "Loaded module of type %x\n", MLOG_PRINT, module->type);
module = module->link;
// module->type |= 0x8000;//set present flag in type // module->type |= 0x8000;//set present flag in type
module->type |= MODULE_PRESENT; module->type |= MODULE_PRESENT;
module = module->link;
} }
} }

View File

@ -3,7 +3,7 @@
KOS_MAPI_FP api; KOS_MAPI_FP api;
uint32_t init(KOS_MAPI_FP module_api){ void init(KOS_MAPI_FP module_api){
uint16_t *t = (void *)0xb8000; uint16_t *t = (void *)0xb8000;
*t = 0x0f41; *t = 0x0f41;
api = module_api; api = module_api;
@ -11,5 +11,5 @@ uint32_t init(KOS_MAPI_FP module_api){
// (*t)++; // (*t)++;
// // asm volatile( " " ); // // asm volatile( " " );
// } // }
return &api; return;
} }

View File

@ -1,11 +1,16 @@
#include <stdint.h> #include <stdint.h>
#include "modlib.h"
void init(){ KOS_MAPI_FP api;
void init(KOS_MAPI_FP module_api){
uint16_t *t = (void *)0xb8002; uint16_t *t = (void *)0xb8002;
*t = 0x0f41; *t = 0x0f41;
// for(int i = 0; i < 1000; i++){ // for(int i = 0; i < 1000; i++){
// (*t)++; // (*t)++;
// // asm volatile( " " ); // // asm volatile( " " );
// } // }
for(;;); // t = 0x50000000;
// *t = 1;
return;
} }