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修正系统入口为系统调用门

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This commit is contained in:
fslongjin
2022-04-22 23:15:34 +08:00
parent 677c505cb1
commit 2fcf91733f
6 changed files with 53 additions and 21 deletions
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16
kernel/process/process.c
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@ -84,15 +84,25 @@ void user_level_function()
: "0"(1), "D"(string)
: "memory");
*/
long err_code;
long err_code=1;
ul addr = (ul)string;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_PRINTF), "m"(addr)
: "a"(SYS_PUT_STRING), "m"(addr)
: "memory", "r8");
if(err_code ==0)
{
char str[] ="errno is 0";
addr = (ul)str;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_PUT_STRING), "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...");