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🆕 读取fat32文件系统的基础信息

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This commit is contained in:
fslongjin
2022-04-19 20:56:01 +08:00
parent 39dd802ff1
commit 979bb35599
10 changed files with 185 additions and 25 deletions
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21
kernel/process/process.c
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@ -84,23 +84,20 @@ void user_level_function()
: "0"(1), "D"(string)
: "memory");
*/
long err_code;
ul addr = (ul)string;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_PRINTF), "m"(addr)
: "memory", "r8");
for (int i = 0;; ++i)
{
long err_code;
ul addr = (ul)string;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_PRINTF), "m"(addr)
: "memory", "r8");
}
// enter_syscall_int(SYS_PRINTF, (ul) "test_sys_printf\n", 0, 0, 0, 0, 0, 0, 0);
// kinfo("Return from syscall id 15...");
while (1)
;
pause();
}
/**
* @brief 使当前进程去执行新的代码