Author: jkim
Date: Thu Nov 11 19:20:33 2010
New Revision: 215139
URL: http://svn.freebsd.org/changeset/base/215139
Log:
Add compat shim for apm(4) to translate APM BIOS function numbers from i386
to PC98-specific ones. Any binaries using apm ioctl(4) commands but built
for i386 should also work on PC98 now.
Reviewed by: imp, nyan
Modified:
head/sys/i386/bios/apm.c
Modified: head/sys/i386/bios/apm.c
==============================================================================
--- head/sys/i386/bios/apm.c Thu Nov 11 19:18:52 2010 (r215138)
+++ head/sys/i386/bios/apm.c Thu Nov 11 19:20:33 2010 (r215139)
@@ -1389,6 +1389,23 @@ apmioctl(struct cdev *dev, u_long cmd, c
return (EPERM);
/* XXX compatibility with the old interface */
args = (struct apm_bios_arg *)addr;
+#ifdef PC98
+ if (((args->eax >> 8) & 0xff) == 0x53) {
+ sc->bios.r.eax = args->eax & ~0xffff;
+ sc->bios.r.eax |= APM_BIOS << 8;
+ switch (args->eax & 0xff) {
+ case 0x0a:
+ sc->bios.r.eax |= APM_GETPWSTATUS;
+ break;
+ case 0x0e:
+ sc->bios.r.eax |= APM_DRVVERSION;
+ break;
+ default:
+ sc->bios.r.eax |= args->eax & 0xff;
+ break;
+ }
+ } else
+#endif
sc->bios.r.eax = args->eax;
sc->bios.r.ebx = args->ebx;
sc->bios.r.ecx = args->ecx;
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