On Tue, 26 Nov 2002, Ronald G. Minnich wrote:
> On Tue, 26 Nov 2002, Adam Sulmicki wrote:
>
> > well it always could be intermediate solution. In this way we only have 4
> > data structures and no functions.
>
> sounds like we need a union, with a tag, and then the descriptors. In the
> limit, the tag can be TAG_CODE, meaning you have to call the attached data
> blob:
>
> enum {TAG_CODE, TAG_PCI_CONFIG, TAG_ISA, TAG_CPU} ;
>
> typedef struct {
> unsigned short vendor, device;
> u8 function, register;
> u8 and, or;
> } pci_config_data;
>
> typedef struct {
> u16 iobase;
> u8 and, or;
> } isa;
>
> typedef struct {
> unsigned long msr;
> unsigned long long and, or;
> } cpu;
>
> // has to be PIC.
> typedef struct {
> unsigned long len;
> char code;
> } code;
>
> typedef struct {
> u8 tag;
> union {
> pci_config_data pci;
> isa isa;
> cpu cpu;
> code code;
> } data;
> };
>
> Would this do it?
I'm willing to write some of this if nobody else can, and if it would
work.
ron
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