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Message type for SYS_READBIOS.

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Change-Id: Id19f658f5eb5f350e3e19f9ce3f8ae80aea23c51
This commit is contained in:
Lionel Sambuc 2014-07-25 15:54:54 +02:00
parent b51e653dd4
commit f45c6b86cb
4 changed files with 21 additions and 15 deletions
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5
include/minix/com.h
View file

@ -371,11 +371,6 @@
#define PROF_CTL_PTR m7_p1 /* location of info struct */
#define PROF_MEM_PTR m7_p2 /* location of profiling data */
/* Field names for SYS_READBIOS. */
#define RDB_SIZE m2_i1
#define RDB_ADDR m2_l1
#define RDB_BUF m2_p1
/* Field names for SYS_VMCTL. */
#define SVMCTL_WHO m1_i1
#define SVMCTL_PARAM m1_i2 /* All SYS_VMCTL requests. */

10
include/minix/ipc.h
View file

@ -115,6 +115,15 @@ typedef struct {
} mess_11;
_ASSERT_MSG_SIZE(mess_11);
typedef struct {
size_t size;
phys_bytes addr;
vir_bytes buf;
uint8_t padding[44];
} mess_lsys_krn_readbios;
_ASSERT_MSG_SIZE(mess_lsys_krn_readbios);
typedef struct {
off_t offset;
void *addr;
@ -1952,6 +1961,7 @@ typedef struct {
mess_notify m_notify;
mess_sigcalls m_sigcalls;
mess_lsys_krn_readbios m_lsys_krn_readbios;
mess_input_tty_event m_input_tty_event;
mess_krn_lsys_schedule m_krn_lsys_schedule;

15
kernel/arch/i386/do_readbios.c
View file

@ -2,9 +2,9 @@
* m_type: SYS_READBIOS
*
* The parameters for this kernel call are:
* m2_i1: RDB_SIZE number of bytes to copy
* m2_l1: RDB_ADDR absolute address in BIOS area
* m2_p1: RDB_BUF buffer address in requesting process
* m_lsys_krn_readbios.size number of bytes to copy
* m_lsys_krn_readbios.addr absolute address in BIOS area
* m_lsys_krn_readbios.buf buffer address in requesting process
*/
#include "kernel/system.h"
@ -16,10 +16,11 @@
int do_readbios(struct proc * caller, message * m_ptr)
{
struct vir_addr src, dst;
vir_bytes len = m_ptr->RDB_SIZE, limit;
size_t len = m_ptr->m_lsys_krn_readbios.size;
vir_bytes limit;
src.offset = m_ptr->RDB_ADDR;
dst.offset = (vir_bytes) m_ptr->RDB_BUF;
src.offset = m_ptr->m_lsys_krn_readbios.addr;
dst.offset = m_ptr->m_lsys_krn_readbios.buf;
src.proc_nr_e = NONE;
dst.proc_nr_e = m_ptr->m_source;
@ -33,5 +34,5 @@ int do_readbios(struct proc * caller, message * m_ptr)
!USERRANGE(BASE_MEM_TOP, UPPER_MEM_END))
return EPERM;
return virtual_copy_vmcheck(caller, &src, &dst, m_ptr->RDB_SIZE);
return virtual_copy_vmcheck(caller, &src, &dst, m_ptr->m_lsys_krn_readbios.size);
}

6
lib/libsys/arch/i386/sys_readbios.c
View file

@ -8,8 +8,8 @@ size_t size; /* Amount of data to read */
/* Read data from BIOS locations */
message m;
m.RDB_SIZE = size;
m.RDB_ADDR = address;
m.RDB_BUF = buf;
m.m_lsys_krn_readbios.size = size;
m.m_lsys_krn_readbios.addr = address;
m.m_lsys_krn_readbios.buf = buf;
return(_kernel_call(SYS_READBIOS, &m));
}