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 #include <arch/arch.h> 12 13 #if ARCH(I386) || ARCH(X86_64) 14 // 导出系统调用入口函数，定义在entry.S中 15 extern void syscall_int(void); 16 17 /** 18 * @brief 通过中断进入系统调用 19 * 20 * @param syscall_id 21 * @param arg0 22 * @param arg1 23 * @param arg2 24 * @param arg3 25 * @param arg4 26 * @param arg5 27 * @param arg6 28 * @param arg7 29 * @return long 30 */ 31 32 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5, ul arg6, ul arg7) 33 { 34 long err_code; 35 __asm__ __volatile__("movq %2, %%r8 \n\t" 36 "movq %3, %%r9 \n\t" 37 "movq %4, %%r10 \n\t" 38 "movq %5, %%r11 \n\t" 39 "movq %6, %%r12 \n\t" 40 "movq %7, %%r13 \n\t" 41 "movq %8, %%r14 \n\t" 42 "movq %9, %%r15 \n\t" 43 "int $0x80 \n\t" 44 : "=a"(err_code) 45 : "a"(syscall_id), "m"(arg0), "m"(arg1), "m"(arg2), "m"(arg3), "m"(arg4), "m"(arg5), "m"(arg6), 46 "m"(arg7) 47 : "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx"); 48 49 return err_code; 50 } 51 52 #else 53 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5, ul arg6, ul arg7){ 54 while (1) 55 { 56 /* code */ 57 } 58 59 } 60 61 #endif 62 63 /** 64 * @brief 打印字符串的系统调用 65 * 66 * 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 67 * 68 * @param regs 寄存器 69 * @param arg0 要打印的字符串 70 * @param arg1 前景色 71 * @param arg2 背景色 72 * @return ul 返回值 73 */ 74 ul do_put_string(char *s, uint32_t front_color, uint32_t background_color) 75 { 76 77 printk_color(front_color, background_color, s); 78 return 0; 79 } 80 81 82