Add old ZMAGIC handling, as in i386 port.
This commit is contained in:
mycroft
parent
4a5baa80a0
commit
5c2721a0c3
|
|
@ -37,7 +37,7 @@
|
|||
*
|
||||
* from: Utah Hdr: machdep.c 1.63 91/04/24
|
||||
* from: @(#)machdep.c 7.16 (Berkeley) 6/3/91
|
||||
* $Id: machdep.c,v 1.8 1993/08/14 14:29:09 mycroft Exp $
|
||||
* $Id: machdep.c,v 1.9 1993/08/19 14:35:46 mycroft Exp $
|
||||
*/
|
||||
|
||||
#include "param.h"
|
||||
|
|
@ -64,6 +64,9 @@
|
|||
#include "../hpux/hpux.h"
|
||||
#endif
|
||||
|
||||
#include "sys/exec.h"
|
||||
#include "sys/vnode.h"
|
||||
|
||||
#include "../include/cpu.h"
|
||||
#include "../include/reg.h"
|
||||
#include "../include/psl.h"
|
||||
|
|
@ -1464,3 +1467,142 @@ hexstr(val, len)
|
|||
}
|
||||
return(nbuf);
|
||||
}
|
||||
|
||||
cpu_exec_makecmds(p, epp)
|
||||
struct proc *p;
|
||||
struct exec_package *epp;
|
||||
{
|
||||
#ifdef COMPAT_NOMID
|
||||
int error;
|
||||
u_long midmag, magic;
|
||||
u_short mid;
|
||||
|
||||
midmag = ntohl(epp->ep_execp->a_midmag);
|
||||
mid = (midmag >> 16 ) & 0xffff;
|
||||
magic = midmag & 0xffff;
|
||||
|
||||
switch (mid << 16 | magic) {
|
||||
case (MID_ZERO << 16) | ZMAGIC:
|
||||
error = cpu_exec_prep_oldzmagic(p, epp);
|
||||
break;
|
||||
default:
|
||||
error = ENOEXEC;
|
||||
}
|
||||
|
||||
return error;
|
||||
#else /* ! COMPAT_NOMID */
|
||||
return ENOEXEC;
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifdef COMPAT_NOMID
|
||||
int
|
||||
cpu_exec_prep_oldzmagic(p, epp)
|
||||
struct proc *p;
|
||||
struct exec_package *epp;
|
||||
{
|
||||
struct exec *execp = epp->ep_execp;
|
||||
struct exec_vmcmd *ccmdp;
|
||||
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: setting up size fields in epp\n");
|
||||
#endif
|
||||
epp->ep_taddr = 0;
|
||||
epp->ep_tsize = execp->a_text;
|
||||
epp->ep_daddr = epp->ep_taddr + execp->a_text;
|
||||
epp->ep_dsize = execp->a_data + execp->a_bss;
|
||||
epp->ep_maxsaddr = USRSTACK - MAXSSIZ;
|
||||
epp->ep_minsaddr = USRSTACK;
|
||||
epp->ep_ssize = p->p_rlimit[RLIMIT_STACK].rlim_cur;
|
||||
epp->ep_entry = execp->a_entry;
|
||||
|
||||
/* check if vnode is in open for writing, because we want to demand-page
|
||||
* out of it. if it is, don't do it, for various reasons
|
||||
*/
|
||||
if ((execp->a_text != 0 || execp->a_data != 0) &&
|
||||
(epp->ep_vp->v_flag & VTEXT) == 0 && epp->ep_vp->v_writecount != 0) {
|
||||
#ifdef DIAGNOSTIC
|
||||
if (epp->ep_vp->v_flag & VTEXT)
|
||||
panic("exec: a VTEXT vnode has writecount != 0\n");
|
||||
#endif
|
||||
epp->ep_vcp = NULL;
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: returning with ETXTBSY\n");
|
||||
#endif
|
||||
return ETXTBSY;
|
||||
}
|
||||
epp->ep_vp->v_flag |= VTEXT;
|
||||
|
||||
/* set up command for text segment */
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: setting up text segment commands\n");
|
||||
#endif
|
||||
epp->ep_vcp = new_vmcmd(vmcmd_map_pagedvn,
|
||||
execp->a_text,
|
||||
epp->ep_taddr,
|
||||
epp->ep_vp,
|
||||
NBPG, /* should this be CLBYTES? */
|
||||
VM_PROT_READ|VM_PROT_EXECUTE);
|
||||
ccmdp = epp->ep_vcp;
|
||||
|
||||
/* set up command for data segment */
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: setting up data segment commands\n");
|
||||
#endif
|
||||
ccmdp->ev_next = new_vmcmd(vmcmd_map_pagedvn,
|
||||
execp->a_data,
|
||||
epp->ep_daddr,
|
||||
epp->ep_vp,
|
||||
execp->a_text + NBPG, /* should be CLBYTES? */
|
||||
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
|
||||
ccmdp = ccmdp->ev_next;
|
||||
|
||||
/* set up command for bss segment */
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: setting up bss segment commands\n");
|
||||
#endif
|
||||
ccmdp->ev_next = new_vmcmd(vmcmd_map_zero,
|
||||
execp->a_bss,
|
||||
epp->ep_daddr + execp->a_data,
|
||||
0,
|
||||
0,
|
||||
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
|
||||
ccmdp = ccmdp->ev_next;
|
||||
|
||||
/* set up commands for stack. note that this takes *two*, one
|
||||
* to map the part of the stack which we can access, and one
|
||||
* to map the part which we can't.
|
||||
*
|
||||
* arguably, it could be made into one, but that would require
|
||||
* the addition of another mapping proc, which is unnecessary
|
||||
*
|
||||
* note that in memory, thigns assumed to be:
|
||||
* 0 ....... ep_maxsaddr <stack> ep_minsaddr
|
||||
*/
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: setting up unmapped stack segment commands\n");
|
||||
#endif
|
||||
ccmdp->ev_next = new_vmcmd(vmcmd_map_zero,
|
||||
((epp->ep_minsaddr - epp->ep_ssize) -
|
||||
epp->ep_maxsaddr),
|
||||
epp->ep_maxsaddr,
|
||||
0,
|
||||
0,
|
||||
VM_PROT_NONE);
|
||||
ccmdp = ccmdp->ev_next;
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: setting up mapped stack segment commands\n");
|
||||
#endif
|
||||
ccmdp->ev_next = new_vmcmd(vmcmd_map_zero,
|
||||
epp->ep_ssize,
|
||||
(epp->ep_minsaddr - epp->ep_ssize),
|
||||
0,
|
||||
0,
|
||||
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
|
||||
|
||||
#ifdef EXEC_DEBUG
|
||||
printf("exec_prep_oldzmagic: returning with no error\n");
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
#endif /* COMPAT_NOMID */
|
||||
|
|
|
|||
Loading…
Reference in New Issue