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Code Issues Releases Wiki Activity

🐛 修复了无法正确地往文件写入数据的bug

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This commit is contained in:
fslongjin
2022-05-03 15:12:02 +08:00
parent 9db1c3f74e
commit f99179014a
6 changed files with 83 additions and 49 deletions
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56
kernel/process/process.c
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@ -88,9 +88,10 @@ void user_level_function()
while (1)
{
// 测试sys_open
char string[] = "a.txt";
char string[] = "333.txt";
long err_code = 1;
int zero = 0;
uint64_t addr = (ul)string;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
@ -108,7 +109,7 @@ void user_level_function()
int fd_num = err_code;
int count = 16;
int count = 128;
// while (count)
//{
uchar buf[128] = {0};
@ -137,10 +138,10 @@ void user_level_function()
: "a"(SYS_PUT_STRING), "m"(addr)
: "memory", "r8");
// SYS_WRITE
char test1[] = "Test11111111jdjdjdjdjdjd\n";
char test1[] = "GGGGHHHHHHHHh112343";
addr = (uint64_t)&test1;
count = 26;
count = 19;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"movq %3, %%r9 \n\t"
@ -154,7 +155,37 @@ void user_level_function()
: "=a"(err_code)
: "a"(SYS_WRITE), "m"(fd_num), "m"(addr), "m"(count), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero)
: "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx");
// Test sys_close
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"movq %3, %%r9 \n\t"
"movq %4, %%r10 \n\t"
"movq %5, %%r11 \n\t"
"movq %6, %%r12 \n\t"
"movq %7, %%r13 \n\t"
"movq %8, %%r14 \n\t"
"movq %9, %%r15 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_CLOSE), "m"(fd_num), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero)
: "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx");
addr = (ul)string;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"movq %3, %%r9 \n\t"
"movq %4, %%r10 \n\t"
"movq %5, %%r11 \n\t"
"movq %6, %%r12 \n\t"
"movq %7, %%r13 \n\t"
"movq %8, %%r14 \n\t"
"movq %9, %%r15 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_OPEN), "m"(addr), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero)
: "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx");
fd_num = err_code;
count = 128;
// Test sys_read
addr = (uint64_t)&buf;
__asm__ __volatile__(
@ -172,7 +203,7 @@ void user_level_function()
: "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx");
count = err_code;
// 将读取到的数据打印出来
addr = (ul)buf+20;
addr = (ul)buf;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"int $0x80 \n\t"
@ -183,21 +214,6 @@ void user_level_function()
// Test Sys
//}
// Test sys_close
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"movq %3, %%r9 \n\t"
"movq %4, %%r10 \n\t"
"movq %5, %%r11 \n\t"
"movq %6, %%r12 \n\t"
"movq %7, %%r13 \n\t"
"movq %8, %%r14 \n\t"
"movq %9, %%r15 \n\t"
"int $0x80 \n\t"
: "=a"(err_code)
: "a"(SYS_CLOSE), "m"(fd_num), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero), "m"(zero)
: "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx");
while (1)
pause();
}