1 #include "syscall.h" 2 #include <common/errno.h> 3 #include <common/fcntl.h> 4 #include <common/string.h> 5 #include <exception/irq.h> 6 #include <filesystem/vfs/VFS.h> 7 #include <mm/slab.h> 8 #include <process/process.h> 9 #include <time/sleep.h> 10 #include <arch/arch.h> 11 12 #if ARCH(I386) || ARCH(X86_64) 13 // 导出系统调用入口函数，定义在entry.S中 14 extern void syscall_int(void); 15 16 /** 17 * @brief 通过中断进入系统调用 18 * 19 * @param syscall_id 20 * @param arg0 21 * @param arg1 22 * @param arg2 23 * @param arg3 24 * @param arg4 25 * @param arg5 26 * @param arg6 27 * @param arg7 28 * @return long 29 */ 30 31 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5) 32 { 33 long err_code; 34 __asm__ __volatile__("movq %2, %%rdi \n\t" 35 "movq %3, %%rsi \n\t" 36 "movq %4, %%rdx \n\t" 37 "movq %5, %%r10 \n\t" 38 "movq %6, %%r8 \n\t" 39 "movq %7, %%r9 \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) 43 : "memory", "r8", "r9", "r10", "rdi", "rsi", "rdx"); 44 45 return err_code; 46 } 47 48 #else 49 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5) 50 { 51 while (1) 52 { 53 /* code */ 54 } 55 } 56 57 #endif 58 59 /** 60 * @brief 打印字符串的系统调用 61 * 62 * 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 63 * 64 * @param regs 寄存器 65 * @param arg0 要打印的字符串 66 * @param arg1 前景色 67 * @param arg2 背景色 68 * @return ul 返回值 69 */ 70 ul do_put_string(char *s, uint32_t front_color, uint32_t background_color) 71 { 72 73 printk_color(front_color, background_color, s); 74 return 0; 75 } 76