Re: ADLO committed (NO FUNCTION TABLES!)

[Ronald G. Minnich]

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?

ron