syscall: syscall logging kinda

src/arch/x86_64/e9.c

@@ -0,0 +1,12 @@
+#include <arch/io.h>
+
+void e9_putc(char c){
+	outb(0xE9, c);
+}
+
+void e9_puts(char* s){
+	size_t len = strlen(s);
+
+	for(uintmax_t i = 0; i < len; ++i)
+		outb(0xE9, s[i]);
+}

src/arch/x86_64/include/arch/e9.h

@@ -0,0 +1,7 @@
+#ifndef _E9_H_INCLUDE
+#define _E9_H_INCLUDE
+
+void e9_putc(char c);
+void e9_puts(char* s);
+
+#endif

src/arch/x86_64/syscall.asm

@@ -110,9 +110,11 @@ asm_syscall_entry:
 	add qword [gs:0], 8 ; fix it
 	
 	sti
-	
+
 	; assemble and save context needed for some system calls	
 
+
+
 	push qword 0x43 ; ss
 	push qword [rsp+8] ; rsp
 	push r11 ; old rflags	
@@ -151,22 +153,41 @@ asm_syscall_entry:
 
 	; set up context for calls that need it
 
-	cmp rax, 12 ; fork
-	
+	cmp rax, 12 ; fork	
+
 	jne .not_fork
 
 	mov rdi, rsp
 
 	jmp .do_syscall
-	
+
 	.not_fork:
 
 	.do_syscall:
 
+	; DEBUG STUFF
+	;mov r15,rax
+	; END DEBUG STUFF
+
 	call [func_table + rax * 8]
 
 	; restore entry state
 
+	; DEBUG STUFF
+
+	;push rax
+	;push rdx
+
+	;mov rsi,rdx
+	;mov rdi,r15
+	;extern syscalllogger
+	;call syscalllogger
+	
+	;pop rdx
+	;pop rax
+
+	; DEBUG STUFF END
+
 	mov r11, 0x43 ; user data
 	mov es,r11
 	mov ds,r11

src/arch/x86_64/syscalllog.c

@@ -0,0 +1,66 @@
+#include <arch/e9.h>
+#include <string.h>
+#include <stdint.h>
+#include <stddef.h>
+
+static char* syscalls[] = {
+	"syscall_libc_log",
+	"syscall_mmap",
+	"syscall_arch_ctl",
+	"syscall_gettid",
+	"syscall_open",
+	"syscall_read",
+	"syscall_lseek",
+	"syscall_close",
+	"syscall_isatty",
+	"syscall_write",
+	"syscall_stat",
+	"syscall_fstat",
+	"syscall_fork",
+	"syscall_execve",
+	"syscall_waitpid",
+	"syscall_exit",
+	"syscall_dup",
+	"syscall_dup2",
+	"syscall_fcntl",
+	"syscall_getpid",
+	"syscall_getdirent",
+	"syscall_ioctl",
+	"syscall_chdir",
+	"syscall_fstatat",
+	"syscall_pipe2",
+	"syscall_mkdir",
+	"syscall_munmap",
+	"syscall_umask",
+	"syscall_poll",
+	"syscall_fchmodat",
+	"syscall_openat",
+	"syscall_chroot",
+	"syscall_mkdirat",
+	"syscall_clock_gettime",
+	"syscall_socket",
+	"syscall_bind",
+	"syscall_listen",
+	"syscall_connect",
+	"syscall_accept",
+	"syscall_nanosleep",
+	"syscall_fchmod",
+	"syscall_linkat"
+	
+};
+
+void syscalllogger(uint64_t num, uint64_t error){
+	
+	e9_puts("syscall: ");
+	e9_puts(syscalls[num]);
+	e9_putc(':');
+	char err[] = {'0', '0', '0', NULL};
+	err[2] += error % 10;
+	error /= 10;
+	err[1] += error % 10;
+	error /= 10;
+	err[0] += error % 10;
+	e9_puts(err);
+	e9_putc('\n');
+
+}