1 #include "syscall.h" 2 #include <common/errno.h> 3 #include <common/fcntl.h> 4 #include <common/string.h> 5 #include <exception/gate.h> 6 #include <exception/irq.h> 7 #include <filesystem/vfs/VFS.h> 8 #include <mm/slab.h> 9 #include <process/process.h> 10 #include <time/sleep.h> 11 // 导出系统调用入口函数，定义在entry.S中 12 extern void syscall_int(void); 13 14 /** 15 * @brief 通过中断进入系统调用 16 * 17 * @param syscall_id 18 * @param arg0 19 * @param arg1 20 * @param arg2 21 * @param arg3 22 * @param arg4 23 * @param arg5 24 * @param arg6 25 * @param arg7 26 * @return long 27 */ 28 29 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5, ul arg6, ul arg7) 30 { 31 long err_code; 32 __asm__ __volatile__("movq %2, %%r8 \n\t" 33 "movq %3, %%r9 \n\t" 34 "movq %4, %%r10 \n\t" 35 "movq %5, %%r11 \n\t" 36 "movq %6, %%r12 \n\t" 37 "movq %7, %%r13 \n\t" 38 "movq %8, %%r14 \n\t" 39 "movq %9, %%r15 \n\t" 40 "int $0x80 \n\t" 41 : "=a"(err_code) 42 : "a"(syscall_id), "m"(arg0), "m"(arg1), "m"(arg2), "m"(arg3), "m"(arg4), "m"(arg5), "m"(arg6), 43 "m"(arg7) 44 : "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx"); 45 46 return err_code; 47 } 48 49 /** 50 * @brief 打印字符串的系统调用 51 * 52 * 当arg1和arg2均为0时，打印黑底白字，否则按照指定的前景色和背景色来打印 53 * 54 * @param regs 寄存器 55 * @param arg0 要打印的字符串 56 * @param arg1 前景色 57 * @param arg2 背景色 58 * @return ul 返回值 59 */ 60 ul do_put_string(char *s, uint32_t front_color, uint32_t background_color) 61 { 62 63 printk_color(front_color, background_color, s); 64 return 0; 65 } 66 67 68