1 /*-------------------------------------------------------------------------
3 device.c - Accomodates subtle variations in PIC16 devices
5 Written By - Scott Dattalo scott@dattalo.com
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 -------------------------------------------------------------------------*/
23 PIC device abstraction
25 There are dozens of variations of PIC microcontrollers. This include
26 file attempts to abstract those differences so that SDCC can easily
33 #if defined(__BORLANDC__) || defined(_MSC_VER)
34 #define STRCASECMP stricmp
36 #define STRCASECMP strcasecmp
39 #define CONFIGURATION_WORDS 20
40 #define IDLOCATION_BYTES 20
55 int confAddrStart; /* starting address */
56 int confAddrEnd; /* ending address */
57 configRegInfo_t crInfo[ CONFIGURATION_WORDS ];
66 int idAddrStart; /* starting ID address */
67 int idAddrEnd; /* ending ID address */
68 idRegInfo_t irInfo[ IDLOCATION_BYTES ];
72 #define PROCESSOR_NAMES 4
73 /* Processor unique attributes */
74 typedef struct PIC16_device {
75 char *name[PROCESSOR_NAMES];/* aliases for the processor name */
77 int maxRAMaddress; /* maximum value for a data address */
78 int RAMsize; /* size of Data RAM - VR 031120 */
79 int acsSplitOfs; /* access bank split offset */
80 int extMIface; /* device has external memory interface */
81 sfrRangeInfo_t sfrRange; /* SFR range */
82 configWordsInfo_t cwInfo; /* configuration words info */
83 idBytesInfo_t idInfo; /* ID Locations info */
86 /* Given a pointer to a register, this macro returns the bank that it is in */
87 #define REG_ADDR(r) ((r)->isBitField ? (((r)->address)>>3) : (r)->address)
105 #define STACK_MODEL_SMALL (pic16_options.stack_model == 0)
106 #define STACK_MODEL_LARGE (pic16_options.stack_model == 1)
108 extern set *fix_idataSymSet;
109 extern set *rel_idataSymSet;
111 extern pic16_options_t pic16_options;
112 extern PIC16_device *pic16;
114 /****************************************/
115 void pic16_assignConfigWordValue(int address, unsigned int value);
116 void pic16_assignIdByteValue(int address, char value);
117 int pic16_isREGinBank(regs *reg, int bank);
118 int pic16_REGallBanks(regs *reg);
119 void pic16_setMaxRAM(int size);
120 int PIC16_IS_CONFIG_ADDRESS(int address);
121 int PIC16_IS_IDLOC_ADDRESS(int address);
122 int PIC16_IS_HWREG_ADDRESS(int address);
124 int checkAddReg(set **set, regs *reg);
125 int checkAddSym(set **set, symbol *reg);
126 int checkSym(set *set, symbol *reg);
128 #endif /* __DEVICE_H__ */