1 /*-------------------------------------------------------------------------
2 SDCCgen51.h - header file for code generation for 8051
4 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding!
23 -------------------------------------------------------------------------*/
32 AOP_STK ,AOP_IMMD, AOP_STR,
33 AOP_CRY, AOP_ACC , AOP_STK_D};
35 /* type asmop : a homogenised type for
36 all the different spaces an operand can be
38 typedef struct asmop {
40 short type ; /* can have values
41 AOP_LIT - operand is a literal value
42 AOP_REG - is in registers
43 AOP_DIR - direct just a name
44 AOP_DPTR - dptr contains address of operand
45 AOP_R0/R1 - r0/r1 contains address of operand
46 AOP_STK - should be pushed on stack this
47 can happen only for the result
48 AOP_IMMD - immediate value for eg. remateriazable
49 AOP_CRY - carry contains the value of this
50 AOP_STR - array of strings
51 AOP_ACC - result is in the acc:b pair
53 short coff ; /* current offset */
54 short size ; /* total size */
55 unsigned code :1 ; /* is in Code space */
56 unsigned paged:1 ; /* in paged memory */
57 unsigned freed:1 ; /* already freed */
59 value *aop_lit ; /* if literal */
60 regs *aop_reg[4]; /* array of registers */
61 char *aop_dir ; /* if direct */
62 regs *aop_ptr ; /* either -> R26 or R30 */
63 char *aop_immd; /* if immediate others are implied */
64 int aop_stk ; /* stack offset when AOP_STK */
65 char *aop_str[4]; /* just a string array containing the location */
67 regs *aop_ptr2; /* either -> R27 or R31 */
70 void gen51Code (iCode *);
72 extern char *fReturn8051[];
73 extern char *fReturn390[];
74 extern unsigned fReturnSize;
75 extern char **fReturn;