/** @file main.c
- mcs51 specific general functions.
+ avr specific general functions.
- Note that mlh prepended _mcs51_ on the static functions. Makes
+ Note that mlh prepended _avr_ on the static functions. Makes
it easier to set a breakpoint using the debugger.
*/
#include "common.h"
#include "ralloc.h"
#include "gen.h"
-static char _defaultRules[] =
-{
+static char _defaultRules[] = {
#include "peeph.rul"
};
/* list of key words used by msc51 */
-static char *_mcs51_keywords[] = {
- "at",
- "bit",
- "code",
- "critical",
- "data",
- "far",
- "idata",
- "interrupt",
- "near",
- "pdata",
- "reentrant",
- "sfr",
- "sbit",
- "using",
- "xdata",
- "_data",
- "_code",
- "_generic",
- "_near",
- "_xdata",
- "_pdata",
- "_idata",
- NULL
+static char *_avr_keywords[] = {
+ "at",
+ "code",
+ "critical",
+ "eeprom",
+ "interrupt",
+ "sfr",
+ "xdata",
+ "_code",
+ "_eeprom",
+ "_generic",
+ "_xdata",
+ "sram",
+ "_sram",
+ "flash",
+ "_flash",
+ NULL
};
+static int regParmFlg = 0; /* determine if we can register a parameter */
-void mcs51_assignRegisters (eBBlock **ebbs, int count);
+static void
+_avr_init (void)
+{
+ asm_addTree (&asm_asxxxx_mapping);
+}
-static bool _mcs51_parseOptions(int *pargc, char **argv, int *i)
+static void
+_avr_reset_regparm (void)
{
- /* TODO: allow port-specific command line options to specify
- * segment names here.
- */
- return FALSE;
+ regParmFlg = 0;
}
-static void _mcs51_finaliseOptions(void)
+static int
+_avr_regparm (sym_link * l, bool reentrant)
{
- /* Hack-o-matic: if we are using the flat24 model,
- * adjust pointer sizes.
- */
- if (options.model == MODEL_FLAT24)
- {
- port->s.fptr_size = 3;
- port->s.gptr_size = 4;
- port->stack.isr_overhead++; /* Will save dpx on ISR entry. */
- #if 1
- port->stack.call_overhead++; /* This acounts for the extra byte
- * of return addres on the stack.
- * but is ugly. There must be a
- * better way.
- */
- #endif
- fReturn = fReturn390;
- fReturnSize = 5;
- }
+ /* the first eight bytes will be passed in
+ registers r16-r23. but we won't split variables
+ i.e. if not enough registers left to hold
+ the parameter then the whole parameter along
+ with rest of the parameters go onto the stack */
+ if (regParmFlg < 8) {
+ int size;
+ if ((size = getSize (l)) > (8 - regParmFlg)) {
+ /* all remaining go on stack */
+ regParmFlg = 8;
+ return 0;
+ }
+ regParmFlg += size;
+ return 1;
+ }
+
+ return 0;
}
-static void _mcs51_setDefaultOptions(void)
+void avr_assignRegisters (ebbIndex *);
+
+static bool
+_avr_parseOptions (int *pargc, char **argv, int *i)
{
+ /* TODO: allow port-specific command line options to specify
+ * segment names here.
+ */
+ return FALSE;
}
-static const char *_mcs51_getRegName(struct regs *reg)
+static void
+_avr_finaliseOptions (void)
{
- if (reg)
- return reg->name;
- return "err";
+ port->mem.default_local_map = port->mem.default_globl_map = xdata;
+ /* change stack to be in far space */
+ /* internal stack segment ;
+ SFRSPACE - NO
+ FAR-SPACE - YES
+ PAGED - NO
+ DIRECT-ACCESS - NO
+ BIT-ACCESS - NO
+ CODE-ACESS - NO
+ DEBUG-NAME - 'B'
+ POINTER-TYPE - FPOINTER
+ */
+ istack =
+ allocMap (0, 1, 0, 0, 0, 0, options.stack_loc, ISTACK_NAME,
+ 'B', FPOINTER);
+
+ /* also change xdata to be direct space since we can use lds/sts */
+ xdata->direct = 1;
+
}
-static void _mcs51_genAssemblerPreamble(FILE *of)
+static void
+_avr_setDefaultOptions (void)
+{
+ options.stackAuto = 1;
+}
+
+static const char *
+_avr_getRegName (struct regs *reg)
+{
+ if (reg)
+ return reg->name;
+ return "err";
+}
+
+static void
+_avr_genAssemblerPreamble (FILE * of)
{
- if (options.model == MODEL_FLAT24)
- {
- fputs(".flat24 on\t\t; 24 bit flat addressing\n", of);
- fputs("dpx = 0x93\t\t; dpx register unknown to assembler\n", of);
- }
}
/* Generate interrupt vector table. */
-static int _mcs51_genIVT(FILE *of, symbol **interrupts, int maxInterrupts)
+static int
+_avr_genIVT (struct dbuf_s * oBuf, symbol ** interrupts, int maxInterrupts)
{
- int i;
-
- if (options.model != MODEL_FLAT24)
- {
- /* Let the default code handle it. */
- return FALSE;
- }
-
- fprintf (of, "\tajmp\t__sdcc_gsinit_startup\n");
-
- /* now for the other interrupts */
- for (i = 0; i < maxInterrupts; i++)
- {
- if (interrupts[i])
- {
- fprintf(of, "\tljmp\t%s\n\t.ds\t4\n", interrupts[i]->rname);
- }
- else
- {
- fprintf(of, "\treti\n\t.ds\t7\n");
- }
- }
-
+ return TRUE;
+}
+
+/* Indicate which extended bit operations this port supports */
+static bool
+hasExtBitOp (int op, int size)
+{
+ if (op == RRC
+ || op == RLC
+ || op == GETHBIT
+ )
return TRUE;
+ else
+ return FALSE;
+}
+
+/* Indicate the expense of an access to an output storage class */
+static int
+oclsExpense (struct memmap *oclass)
+{
+ if (IN_FARSPACE(oclass))
+ return 1;
+
+ return 0;
}
/** $1 is always the basename.
MUST be terminated with a NULL.
*/
static const char *_linkCmd[] = {
- "aslink", "-nf", "$1", NULL
+ "linkavr", "", "\"$1\"", NULL
};
+/* $3 is replaced by assembler.debug_opts resp. port->assembler.plain_opts */
static const char *_asmCmd[] = {
- "asx8051", "-plosgffc", "$1.asm", NULL
+ "asavr", "$l" , "$3", "\"$1.s\"", NULL
};
/* Globals */
-PORT mcs51_port = {
- "mcs51",
- "MCU 8051", /* Target name */
- {
- TRUE, /* Emit glue around main */
- },
- {
- _asmCmd,
- "-plosgffc", /* Options with debug */
- "-plosgff", /* Options without debug */
- },
- {
- _linkCmd
- },
- {
- _defaultRules
- },
- {
- /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
- 1, 1, 2, 4, 1, 2, 3, 1, 4, 4
- },
- {
- "XSEG (XDATA)",
- "STACK (DATA)",
- "CSEG (CODE)",
- "DSEG (DATA)",
- "ISEG (DATA)",
- "XSEG (XDATA)",
- "BSEG (BIT)",
- "RSEG (DATA)",
- "GSINIT (CODE)",
- "OSEG (OVR,DATA)",
- "GSFINAL (CODE)"
- },
- {
- +1, 1, 4, 1, 1
- },
- /* mcs51 has an 8 bit mul */
- {
- 1
- },
- NULL,
- _mcs51_parseOptions,
- _mcs51_finaliseOptions,
- _mcs51_setDefaultOptions,
- mcs51_assignRegisters,
- _mcs51_getRegName ,
- _mcs51_keywords,
- _mcs51_genAssemblerPreamble,
- _mcs51_genIVT
+PORT avr_port = {
+ TARGET_ID_AVR,
+ "avr",
+ "ATMEL AVR", /* Target name */
+ NULL, /* processor */
+ {
+ glue,
+ TRUE, /* Emit glue around main */
+ MODEL_LARGE | MODEL_SMALL,
+ MODEL_SMALL
+ },
+ {
+ _asmCmd,
+ NULL,
+ "-plosgff", /* Options with debug */
+ "-plosgff", /* Options without debug */
+ 0,
+ ".s",
+ NULL, /* no do_assemble */
+ },
+ {
+ _linkCmd,
+ NULL,
+ NULL,
+ ".rel",
+ 1},
+ {
+ _defaultRules},
+ {
+ /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
+ 1, 2, 2, 4, 2, 2, 3, 1, 4, 4},
+
+ /* tags for generic pointers */
+ { 0x00, 0x40, 0x60, 0x80 }, /* far, near, xstack, code */
+
+ {
+ "XSEG",
+ "STACK",
+ "CSEG",
+ "DSEG",
+ "ISEG",
+ NULL, //PSEG
+ "XSEG",
+ "BSEG",
+ "RSEG",
+ "GSINIT",
+ "OSEG",
+ "GSFINAL",
+ "HOME",
+ NULL, // initialized xdata
+ NULL, // a code copy of xiseg
+ "CONST (CODE)", // const_name - const data (code or not)
+ "CABS (ABS,CODE)", // cabs_name - const absolute data (code or not)
+ "XABS (ABS,XDATA)", // xabs_name - absolute xdata/pdata
+ "IABS (ABS,DATA)", // iabs_name - absolute idata/data
+ NULL,
+ NULL,
+ 0,
+ },
+ { NULL, NULL },
+ {
+ -1, 1, 4, 1, 1, 0},
+ /* avr has an 8 bit mul */
+ {
+ 1, -1
+ },
+ {
+ avr_emitDebuggerSymbol
+ },
+ {
+ 255/3, /* maxCount */
+ 3, /* sizeofElement */
+ /* The rest of these costs are bogus. They approximate */
+ /* the behavior of src/SDCCicode.c 1.207 and earlier. */
+ {4,4,4}, /* sizeofMatchJump[] */
+ {0,0,0}, /* sizeofRangeCompare[] */
+ 0, /* sizeofSubtract */
+ 3, /* sizeofDispatch */
+ },
+ "_",
+ _avr_init,
+ _avr_parseOptions,
+ NULL,
+ NULL,
+ _avr_finaliseOptions,
+ _avr_setDefaultOptions,
+ avr_assignRegisters,
+ _avr_getRegName,
+ _avr_keywords,
+ _avr_genAssemblerPreamble,
+ NULL, /* no genAssemblerEnd */
+ _avr_genIVT,
+ NULL, // _avr_genXINIT
+ NULL, /* genInitStartup */
+ _avr_reset_regparm,
+ _avr_regparm,
+ NULL,
+ NULL,
+ NULL,
+ hasExtBitOp, /* hasExtBitOp */
+ oclsExpense, /* oclsExpense */
+ FALSE,
+ TRUE, /* little endian */
+ 0, /* leave lt */
+ 1, /* transform gt ==> not le */
+ 0, /* leave le */
+ 0, /* leave ge */
+ 0, /* leave != */
+ 0, /* leave == */
+ FALSE, /* No array initializer support. */
+ 0, /* no CSE cost estimation yet */
+ NULL, /* no builtin functions */
+ GPOINTER, /* treat unqualified pointers as "generic" pointers */
+ 1, /* reset labelKey to 1 */
+ 1, /* globals & local static allowed */
+ PORT_MAGIC
};
-
projects / fw / sdcc / blobdiff