Imbus/xv6-riscv-kernel
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Reset kernel code + userspace program

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This commit is contained in:
Imbus 2025-03-31 19:48:14 +02:00
parent aacb2f8db2
commit 3247689ab2
7 changed files with 28 additions and 2 deletions
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3
kernel/syscall.c
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@ -103,6 +103,7 @@ extern u64 sys_mkdir(void);
extern u64 sys_close(void);
extern u64 sys_trace(void);
extern u64 sys_halt(void);
extern u64 sys_reset(void);
// An array mapping syscall numbers from syscall.h
// to the function that handles the system call.
@ -112,7 +113,7 @@ static u64 (*syscalls[])(void) = {
[SYS_chdir] = sys_chdir, [SYS_dup] = sys_dup, [SYS_getpid] = sys_getpid, [SYS_sbrk] = sys_sbrk,
[SYS_sleep] = sys_sleep, [SYS_uptime] = sys_uptime, [SYS_open] = sys_open, [SYS_write] = sys_write,
[SYS_mknod] = sys_mknod, [SYS_unlink] = sys_unlink, [SYS_link] = sys_link, [SYS_mkdir] = sys_mkdir,
[SYS_close] = sys_close, [SYS_trace] = sys_trace, [SYS_halt] = sys_halt,
[SYS_close] = sys_close, [SYS_trace] = sys_trace, [SYS_halt] = sys_halt, [SYS_reset] = sys_reset,
};
void

1
kernel/syscall.h
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@ -24,3 +24,4 @@
#define SYS_close 21
#define SYS_trace 22
#define SYS_halt 23
#define SYS_reset 24

11
kernel/sysproc.c
View file

@ -101,5 +101,14 @@ void
sys_halt(void)
{
(*(volatile u32 *)QEMU_POWER) = 0x5555;
panic("sys_poweroff");
panic("sys_halt");
}
void
sys_reset(void)
{
// TODO: Revisit and review
// asm volatile("j _entry");
(*(volatile u32 *)QEMU_POWER) = 0x3333;
panic("sys_reset");
}