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my solution to lab 6

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winPond
2019-07-17 16:08:06 +08:00
parent 8147d99448
commit c62da1c86d
534 changed files with 60875 additions and 6513 deletions
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35
lab/kern/syscall.c
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@@ -11,6 +11,8 @@
#include <kern/syscall.h>
#include <kern/console.h>
#include <kern/sched.h>
#include <kern/time.h>
#include <kern/e1000.h>
// Print a string to the system console.
// The string is exactly 'len' characters long.
@@ -55,11 +57,13 @@ sys_env_destroy(envid_t envid)
if ((r = envid2env(envid, &e, 1)) < 0)
return r;
if (e == curenv)
cprintf("[%08x] exiting gracefully\n", curenv->env_id);
else
cprintf("[%08x] destroying %08x\n", curenv->env_id, e->env_id);
env_destroy(e);
return 0;
}
@@ -430,6 +434,30 @@ sys_ipc_recv(void *dstva)
return 0;
}
// Return the current time.
static int
sys_time_msec(void)
{
// LAB 6: Your code here.
return time_msec();
// panic("sys_time_msec not implemented");
}
int
sys_pkt_try_send(void * buf, size_t len)
{
user_mem_assert(curenv, buf, len, PTE_U);
return e1000_transmit(buf, len);
}
int
sys_pkt_try_receive(void *rev_buf, size_t *len)
{
//cprintf("try recive...\n");
return e1000_receive(rev_buf, len);
}
// Dispatches to the correct kernel function, passing the arguments.
int32_t
syscall(uint32_t syscallno, uint32_t a1, uint32_t a2, uint32_t a3, uint32_t a4, uint32_t a5)
@@ -472,6 +500,13 @@ syscall(uint32_t syscallno, uint32_t a1, uint32_t a2, uint32_t a3, uint32_t a4,
case SYS_env_set_trapframe:
return sys_env_set_trapframe((envid_t) a1, (struct Trapframe *) a2);
case SYS_time_msec:
return sys_time_msec();
case SYS_pkt_try_send:
return sys_pkt_try_send((void *) a1, (size_t) a2);
case SYS_pkt_try_recv:
return sys_pkt_try_receive((void *) a1, (size_t *) a2);
case NSYSCALLS:
return -E_INVAL;