diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/c_bsdsetsid.S | 53 | ||||
| -rw-r--r-- | src/e_err.S | 2 | ||||
| -rw-r--r-- | src/u_strncmp.S | 2 |
3 files changed, 47 insertions, 10 deletions
diff --git a/src/c_bsdsetsid.S b/src/c_bsdsetsid.S index 9f0e420..0d5278b 100644 --- a/src/c_bsdsetsid.S +++ b/src/c_bsdsetsid.S @@ -39,26 +39,63 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * bsdsetsid: src/c_bsdsetsid.S - * 2020-11-20 19:45 + * 2020-11-21 18:47 * Joe * * This is the entrypoint of the program. */ .data -status: .space 4, 0x0 +status: .space 4, 0x0 +ref_w_opt: .asciz "-w" .text .globl main +c_parent_old: + mov %rax, %rdi + lea status, %rsi + xor %rdx, %rdx + xor %rcx, %rcx + xor %rax, %rax + movb $0x7, %al /* SYS_wait4 */ + syscall + movq (%rsi), %rax + and $0xff00, %rax + shr $0x8, %rax + push %rax + jmp u_hexdec +c_parent_next: + pop %rdi + movb $0x7, %al + xor %rax, %rax + movb $0x1, %al /* SYS_exit */ + syscall + +c_w_opt: + mov $0x1, %r15 + pop %rdi + mov %rdi, %r8 + push %rdi + cmp $0x2, %r8 + jle e_noarg + jmp .c.main_next + main: cmpb $0x1, %dil jle e_noarg - xor %rax, %rax - movb $0x2, %al - push %rdi - push %rsi + xor %r15, %r15 push %rdx + push %rsi + push %rdi + lea ref_w_opt, %rdi + mov $0x3, %rdx + call u_strncmp + cmp $0x0, %rax + je c_w_opt +.c.main_next: + xor %rax, %rax + movb $0x2, %al /* SYS_fork */ syscall test %rax, %rax js e_fork @@ -74,9 +111,9 @@ c_child: test %rax, %rax js e_setsid xor %rax, %rax - pop %rdx - pop %rsi pop %rdi + pop %rsi + pop %rdx mov $0x1, %rcx mov (%rsi, %rcx, 8), %rdi lea 0(%rsi, %rcx, 8), %rsi diff --git a/src/e_err.S b/src/e_err.S index e29e105..308a062 100644 --- a/src/e_err.S +++ b/src/e_err.S @@ -100,7 +100,7 @@ e_execve: e_exit: xor %rax, %rax - movb $0x1, %al /* sys_exit */ + movb $0x1, %al /* SYS_exit */ syscall .data diff --git a/src/u_strncmp.S b/src/u_strncmp.S index aafa721..694ae0f 100644 --- a/src/u_strncmp.S +++ b/src/u_strncmp.S @@ -39,7 +39,7 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * bsdsetsid: src/u_strncmp.S - * 2020-11-21 14:02 + * 2020-11-21 18:47 * Joe * * General error handling happen here. |