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add support for a function to be called from execve to check a_mid type

This commit is contained in:
cgd 1993-06-03 01:31:05 +00:00
parent 9c46a9333d
commit 94f52462a4
1 changed files with 35 additions and 6 deletions
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41
sys/arch/i386/i386/machdep.c
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@ -35,7 +35,7 @@
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91 * from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.23 1993/06/02 04:28:07 cgd Exp $ * $Id: machdep.c,v 1.24 1993/06/03 01:31:05 cgd Exp $
*/ */
#include "param.h" #include "param.h"
@ -102,6 +102,8 @@ int biosmem;
extern cyloffset; extern cyloffset;
int cpu_class;
cpu_startup() cpu_startup()
{ {
register int unixsize; register int unixsize;
@ -261,18 +263,16 @@ struct cpu_nameclass i386_cpus[] = {
identifycpu() /* translated from hp300 -- cgd */ identifycpu() /* translated from hp300 -- cgd */
{ {
int class;
printf("CPU: "); printf("CPU: ");
if (cpu >= 0 && cpu < (sizeof i386_cpus/sizeof(struct cpu_nameclass))) { if (cpu >= 0 && cpu < (sizeof i386_cpus/sizeof(struct cpu_nameclass))) {
printf("%s", i386_cpus[cpu].cpu_name); printf("%s", i386_cpus[cpu].cpu_name);
class = i386_cpus[cpu].cpu_class; cpu_class = i386_cpus[cpu].cpu_class;
} else { } else {
printf("unknown cpu type %d\n", cpu); printf("unknown cpu type %d\n", cpu);
panic("startup: bad cpu id"); panic("startup: bad cpu id");
} }
printf(" ("); printf(" (");
switch(class) { switch(cpu_class) {
case CPUCLASS_286: case CPUCLASS_286:
printf("286"); printf("286");
break; break;
@ -295,7 +295,7 @@ identifycpu() /* translated from hp300 -- cgd */
* Now that we have told the user what they have, * Now that we have told the user what they have,
* let them know if that machine type isn't configured. * let them know if that machine type isn't configured.
*/ */
switch (class) { switch (cpu_class) {
case CPUCLASS_286: /* a 286 should not make it this far, anyway */ case CPUCLASS_286: /* a 286 should not make it this far, anyway */
#if !defined(I386_CPU) #if !defined(I386_CPU)
case CPUCLASS_386: case CPUCLASS_386:
@ -1179,3 +1179,32 @@ copystr(fromaddr, toaddr, maxlength, lencopied) u_int *lencopied, maxlength;
if(lencopied) *lencopied = tally; if(lencopied) *lencopied = tally;
return(ENAMETOOLONG); return(ENAMETOOLONG);
} }
/*
* the following function checks to see if a given machine
* type (a_mid) field is valid for this architecture
* a non-zero return value indicates that the machine type is correct.
*/
int
cpu_exec_checkmid(int mid)
{
int rv;
switch (mid) {
#ifdef COMPAT_NOMID
case MID_ZERO:
return 1;
#endif
case MID_I386:
return 1;
case MID_I486:
return ((cpu_class == CPUCLASS_486) ||
(cpu_class == CPUCLASS_586));
default:
return 0;
}
}