diff options
Diffstat (limited to 'asm/int_syscall_handler.asm')
| -rw-r--r-- | asm/int_syscall_handler.asm | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/asm/int_syscall_handler.asm b/asm/int_syscall_handler.asm deleted file mode 100644 index 4031f3d..0000000 --- a/asm/int_syscall_handler.asm +++ /dev/null @@ -1,256 +0,0 @@ -global int_syscall_handler -[extern task_fork] -[extern task_exit] -[extern task_wait] - - -[extern syscall_exit] -[extern syscall_write] -[extern syscall_read] -[extern syscall_readdir] -[extern syscall_execve] -[extern syscall_open] -[extern syscall_close] -[extern syscall_isatty] -[extern syscall_lseek] -[extern syscall_sbrk] -[extern syscall_stat] -[extern syscall_fork] -[extern syscall_poll] -[extern syscall_gettimeofday] -[extern syscall_unhandled] - -[bits 32] - -pid: dd 0x0 - -int_syscall_handler: - -cmp eax, 72 -je call_fork - -cmp eax, 60 -je call_exit - -cmp eax, 77 -je call_wait - - cli - - push ebx - push ecx - push edx - - cmp eax, 61 - je call_write - - cmp eax, 62 - je call_read - - cmp eax, 63 - je call_readdir - - cmp eax, 64 - je call_execve - - cmp eax, 65 - je call_open - - cmp eax, 66 - je call_close - - cmp eax, 68 - je call_isatty - - cmp eax, 69 - je call_lseek - - cmp eax, 70 - je call_sbrk - - cmp eax, 71 - je call_timeofday - - cmp eax, 74 - je call_stat - - cmp eax, 67 - je call_stat - - cmp eax, 79 - je call_stat - - cmp eax, 80 - je call_poll - - push eax - jmp call_unhandled - - -done: - - - -done_blocking: - - pop ebx - pop ecx - pop edx - - mov ebx,eax - - sti - - iret ;Interrupt-Return - -call_wait: - - cli - - pusha ;Push all standard registers - - mov ebx, esp ;save current stack pointer in esp - mov esp, 0x7000 ;now put the stack outside of virtual memory in kernel space! - - push ebx ;Push pointer to all the stuff we just pushed - - call task_wait ;Call C code - - mov esp, eax ;Replace the stack with what the C code gave us - - popa ;Put the standard registers back - - sti - - iretd ;Interrupt-Return - ;;;; - -call_exit: - - cli - - pusha ;Push all standard registers - - mov ebx, esp ;save current stack pointer in esp - mov esp, 0x7000 ;now put the stack outside of virtual memory in kernel space! - - push ebx ;Push pointer to all the stuff we just pushed - - call task_exit ;Call C code - - mov esp, eax ;Replace the stack with what the C code gave us - - popa ;Put the standard registers back - - sti - - iretd ;Interrupt-Return - ;;;; - -call_fork: - - pusha ;Push all standard registers - - push ds - push es - push fs - push gs - - mov ebx, esp ; pass it in - push ebx - call task_fork ;Call C code - pop ebx - - pop ds - pop es - pop fs - pop gs - - mov [pid],eax ; save return val, so it survives popa - - popa ;Put the standard registers back - - mov ebx,[pid] - - iretd ;Interrupt-Return - -call_timeofday: - call syscall_gettimeofday - jmp done - -call_stat: - call syscall_stat - jmp done - -call_write: - call syscall_write - jmp done - -call_open: - call syscall_open - jmp done - -call_readdir: - call syscall_readdir - jmp done - -call_close: - call syscall_close - jmp done - -call_isatty: - call syscall_isatty - jmp done - -call_lseek: - call syscall_lseek - jmp done - -call_sbrk: - call syscall_sbrk - jmp done - -call_poll: - call syscall_poll - jmp done - -call_unhandled: - call syscall_unhandled - jmp done ;this should never be called, since unhandled causes kernel panic - - - ;;; THIS CALLS NEED REENABLE INTERRUPTS BEFORE calling workers - ;; TODO: redesign this shit! -call_read: - - ;//mov al, 0x20 ;Port number AND command number to Acknowledge IRQ - ;//out 0x20, al ;Acknowledge IRQ, so we keep getting interrupts - sti - - call syscall_read - - jmp done_blocking - -call_execve: - - pusha - - mov eax,esp - mov esp,0x7000 - - push ebx - push ecx - push edx - - mov ebx,eax - call syscall_execve - - pop eax - pop eax - pop eax - - mov esp,ebx - - popa - - jmp done |