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 #define CONFIGURATION_WORDS 20
34 #define IDLOCATION_BYTES 20
49 int confAddrStart; /* starting address */
50 int confAddrEnd; /* ending address */
51 configRegInfo_t crInfo[ CONFIGURATION_WORDS ];
60 int idAddrStart; /* starting ID address */
61 int idAddrEnd; /* ending ID address */
62 idRegInfo_t irInfo[ IDLOCATION_BYTES ];
66 #define PROCESSOR_NAMES 4
67 /* Processor unique attributes */
68 typedef struct PIC16_device {
69 char *name[PROCESSOR_NAMES];/* aliases for the processor name */
71 int maxRAMaddress; /* maximum value for a data address */
72 int RAMsize; /* size of Data RAM - VR 031120 */
73 int acsSplitOfs; /* access bank split offset */
74 int extMIface; /* device has external memory interface */
75 sfrRangeInfo_t sfrRange; /* SFR range */
76 configWordsInfo_t cwInfo; /* configuration words info */
77 idBytesInfo_t idInfo; /* ID Locations info */
80 /* Given a pointer to a register, this macro returns the bank that it is in */
81 #define REG_ADDR(r) ((r)->isBitField ? (((r)->address)>>3) : (r)->address)
83 #define OF_LR_SUPPORT 0x00000001
84 #define OF_OPTIMIZE_GOTO 0x00000002
85 #define OF_OPTIMIZE_CMP 0x00000004
86 #define OF_OPTIMIZE_DF 0x00000008
101 unsigned long opt_flags;
108 #define STACK_MODEL_SMALL (pic16_options.stack_model == 0)
109 #define STACK_MODEL_LARGE (pic16_options.stack_model == 1)
111 extern set *fix_idataSymSet;
112 extern set *rel_idataSymSet;
115 /* This is an experimental code for #pragma inline
116 and is temporarily disabled for 2.5.0 release */
117 extern set *asmInlineMap;
122 unsigned long adsize;
123 unsigned long udsize;
124 unsigned long idsize;
125 unsigned long intsize;
128 extern stats_t statistics;
130 extern pic16_options_t pic16_options;
131 extern PIC16_device *pic16;
133 /****************************************/
134 void pic16_assignConfigWordValue(int address, unsigned int value);
135 void pic16_assignIdByteValue(int address, char value);
136 int pic16_isREGinBank(regs *reg, int bank);
137 int pic16_REGallBanks(regs *reg);
138 void pic16_setMaxRAM(int size);
139 int PIC16_IS_CONFIG_ADDRESS(int address);
140 int PIC16_IS_IDLOC_ADDRESS(int address);
141 int PIC16_IS_HWREG_ADDRESS(int address);
143 int checkAddReg(set **set, regs *reg);
144 int checkAddSym(set **set, symbol *reg);
145 int checkSym(set *set, symbol *reg);
147 #endif /* __DEVICE_H__ */