[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] rombios: fix implicit assumption that DS == SS
rombios: fix implicit assumption that DS == SS by passing boot device info by value, not by reference. Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx> diff -r 4976d7b90998 tools/firmware/rombios/rombios.c --- a/tools/firmware/rombios/rombios.c Tue Jul 06 16:25:42 2010 +0100 +++ b/tools/firmware/rombios/rombios.c Tue Jul 06 16:25:56 2010 +0100 @@ -2195,21 +2195,19 @@ //-------------------------------------------------------------------------- void -print_boot_device(e) - ipl_entry_t *e; -{ - Bit16u type; +print_boot_device(type, desc) + Bit16u type; Bit32u desc; +{ char description[33]; Bit16u ss = get_SS(); - type = e->type; /* NIC appears as type 0x80 */ if (type == IPL_TYPE_BEV) type = 0x4; if (type == 0 || type > 0x4) BX_PANIC("Bad drive type\n"); printf("Booting from %s", drivetypes[type]); /* print product string if BEV */ - if (type == 4 && e->description != 0) { + if (type == 4 && desc != 0) { /* first 32 bytes are significant */ - memcpyb(ss, &description, (Bit16u)(e->description >> 16), (Bit16u)(e->description & 0xffff), 32); + memcpyb(ss, &description, (Bit16u)(desc >> 16), (Bit16u)(desc & 0xffff), 32); /* terminate string */ description[32] = 0; printf(" [%S]", ss, description); @@ -8284,7 +8282,7 @@ /* Do the loading, and set up vector as a far pointer to the boot * address, and bootdrv as the boot drive */ - print_boot_device(&e); + print_boot_device(e.type, e.description); switch(e.type) { case IPL_TYPE_FLOPPY: /* FDD */ _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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