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Hack out of proc.c; function and flags width in ipc.h back to nibbles

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instead of bytes for backwards compatability
This commit is contained in:
Ben Gras 2006-03-15 11:29:54 +00:00
parent d2d193c7b6
commit 55bdde85f0
2 changed files with 14 additions and 19 deletions
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24
kernel/ipc.h
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@ -7,24 +7,24 @@
#include <minix/com.h>
/* Masks and flags for system calls. */
#define SYSCALL_FUNC 0x00FF /* mask for system call function */
#define SYSCALL_FLAGS 0xFF00 /* mask for system call flags */
#define NON_BLOCKING 0x0100 /* do not block if target not ready */
#define SYSCALL_FUNC 0x000F /* mask for system call function */
#define SYSCALL_FLAGS 0x00F0 /* mask for system call flags */
#define NON_BLOCKING 0x0010 /* do not block if target not ready */
/* System call numbers that are passed when trapping to the kernel. The
* numbers are carefully defined so that it can easily be seen (based on
* the bits that are on) which checks should be done in sys_call().
*/
#define SEND 1 /* 0000 0001 : blocking send */
#define RECEIVE 2 /* 0000 0010 : blocking receive */
#define SENDREC 3 /* 0000 0011 : SEND + RECEIVE */
#define NOTIFY 4 /* 0000 0100 : nonblocking notify */
#define ECHO 8 /* 0000 1000 : echo a message */
#define SEND 1 /* 0001 : blocking send */
#define RECEIVE 2 /* 0010 : blocking receive */
#define SENDREC 3 /* 0011 : SEND + RECEIVE */
#define NOTIFY 4 /* 0100 : nonblocking notify */
#define ECHO 8 /* 1000 : echo a message */
#define IPC_REQUEST 0x10 /* 0001 0000 : blocking request */
#define IPC_REPLY 0x20 /* 0010 0000 : nonblocking reply */
#define IPC_NOTIFY 0x40 /* 0100 0000 : nonblocking notification */
#define IPC_RECEIVE 0x80 /* 1000 0000 : blocking receive */
#define IPC_REQUEST 5 /* 0101 : blocking request */
#define IPC_REPLY 6 /* 0110 : nonblocking reply */
#define IPC_NOTIFY 7 /* 0111 : nonblocking notification */
#define IPC_RECEIVE 9 /* 1001 : blocking receive */
/* The following bit masks determine what checks that should be done. */
#define CHECK_PTR 0xBB /* 1011 1011 : validate message buffer */

9
kernel/proc.c
View file

@ -101,19 +101,14 @@ long bit_map; /* notification event set or flags */
* (or both). The caller is always given by 'proc_ptr'.
*/
register struct proc *caller_ptr = proc_ptr; /* get pointer to caller */
int function; /* get system call function */
unsigned flags; /* get flags */
int function = call_nr & SYSCALL_FUNC; /* get system call function */
unsigned flags = call_nr & SYSCALL_FLAGS; /* get flags */
int mask_entry; /* bit to check in send mask */
int group_size; /* used for deadlock check */
int result; /* the system call's result */
int src_dst;
vir_clicks vlo, vhi; /* virtual clicks containing message to send */
if(call_nr == 0x23) call_nr = 0x0203;
function = call_nr & SYSCALL_FUNC; /* get system call function */
flags = call_nr & SYSCALL_FLAGS; /* get flags */
#if 0
if (caller_ptr->p_rts_flags & SLOT_FREE)
{