1 /*-----------------------------------------------------------------*/
2 /* SDCCmem.h - header file for memory management */
3 /*-----------------------------------------------------------------*/
10 typedef struct memmap{
11 unsigned char pageno;/* page no for this variable */
12 char *sname; /* character prefix for map */
13 char dbName ; /* debugger address space name */
14 int slbl ; /* label counter for space */
15 unsigned sloc ; /* starting location */
16 unsigned fmap : 1; /* 1 = 16bit addressing reqd */
17 unsigned paged : 1; /* this is a paged mem space */
18 unsigned direct: 1; /* 1= indirect access only */
19 unsigned bitsp: 1; /* 1 = bit addressable space */
20 unsigned codesp:1; /* 1 = code space */
21 unsigned regsp: 1; /* 1= sfr space */
22 FILE *oFile ; /* object file associated */
23 struct set *syms; /* symbols defined in this segment */
26 extern FILE *junkFile ;
28 /* memory map prefixes MOF added the DATA,CODE,XDATA,BIT */
29 #define XSTACK_NAME port->mem.xstack_name
30 #define ISTACK_NAME port->mem.istack_name
31 #define CODE_NAME port->mem.code_name
32 #define DATA_NAME port->mem.data_name
33 #define IDATA_NAME port->mem.idata_name
34 #define XDATA_NAME port->mem.xdata_name
35 #define BIT_NAME port->mem.bit_name
36 #define REG_NAME port->mem.reg_name
37 #define STATIC_NAME port->mem.static_name
39 /* forward definition for variables */
40 extern memmap *xstack; /* xternal stack data */
41 extern memmap *istack; /* internal stack */
42 extern memmap *code ; /* code segment */
43 extern memmap *data ; /* internal data upto 128 */
44 extern memmap *xdata ; /* external data */
45 extern memmap *idata ; /* internal data upto 256 */
46 extern memmap *bit ; /* bit addressable space */
47 extern memmap *statsg; /* static code segment */
48 extern memmap *sfr ; /* register space */
49 extern memmap *sfrbit; /* sfr bit space */
50 extern memmap *reg ; /* register space */
51 extern memmap *_const; /* constant segment */
52 extern memmap *generic; /* unknown */
53 extern memmap *overlay; /* the overlay segment */
55 extern struct set *ovrSetSets;
57 /* easy access macros */
58 #define IN_BITSPACE(map) (map && map->bitsp)
59 #define IN_STACK(x) (IS_SPEC(x) && (SPEC_OCLS(x) == xstack || SPEC_OCLS(x) == istack ))
60 #define IN_FARSPACE(map) (map && map->fmap)
61 #define IN_DIRSPACE(map) (map && map->direct)
62 #define IN_PAGEDSPACE(map) (map && map->paged )
63 #define IN_CODESPACE(map) (map && map->codesp)
65 /* forward decls for functions */
66 memmap *allocMap (char,char,char,char,char,char,unsigned,char *,char );
68 void allocGlobal (struct symbol * );
69 void allocLocal (struct symbol * );
70 void allocParms (struct value * );
71 void deallocParms (struct value * );
72 void deallocLocal (struct symbol * );
73 int allocVariables (struct symbol * );
75 void overlay2data ( );
76 void redoStackOffsets( );