1 #include "syscall.h" 2 #include <common/errno.h> 3 #include <common/fcntl.h> 4 #include <common/string.h> 5 #include <mm/slab.h> 6 #include <process/process.h> 7 #include <time/sleep.h> 8 #include <arch/arch.h> 9 10 #if ARCH(I386) || ARCH(X86_64) 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) 30 { 31 long err_code; 32 __asm__ __volatile__("movq %2, %%rdi \n\t" 33 "movq %3, %%rsi \n\t" 34 "movq %4, %%rdx \n\t" 35 "movq %5, %%r10 \n\t" 36 "movq %6, %%r8 \n\t" 37 "movq %7, %%r9 \n\t" 38 "int $0x80 \n\t" 39 : "=a"(err_code) 40 : "a"(syscall_id), "m"(arg0), "m"(arg1), "m"(arg2), "m"(arg3), "m"(arg4), "m"(arg5) 41 : "memory", "r8", "r9", "r10", "rdi", "rsi", "rdx"); 42 43 return err_code; 44 } 45 46 #else 47 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5) 48 { 49 while (1) 50 { 51 /* code */ 52 } 53 } 54 55 #endif 56 57 /** 58 * @brief 打印字符串的系统调用 59 * 60 * 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 61 * 62 * @param regs 寄存器 63 * @param arg0 要打印的字符串 64 * @param arg1 前景色 65 * @param arg2 背景色 66 * @return ul 返回值 67 */ 68 ul do_put_string(char *s, uint32_t front_color, uint32_t background_color) 69 { 70 71 printk_color(front_color, background_color, s); 72 return 0; 73 } 74