264 lines
6.9 KiB
C
264 lines
6.9 KiB
C
/** @file port.h
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Definitions for what a port must provide.
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All ports are referenced in SDCCmain.c.
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*/
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#ifndef PORT_INCLUDE
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#define PORT_INCLUDE
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#include "SDCCicode.h"
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#define TARGET_ID_MCS51 1
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#define TARGET_ID_GBZ80 2
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#define TARGET_ID_Z80 3
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#define TARGET_ID_AVR 4
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#define TARGET_ID_DS390 5
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#define TARGET_ID_PIC 6
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#define TARGET_ID_I186 7
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#define TARGET_ID_TLCS900H 8
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#define TARGET_ID_XA51 9
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/* Macro to test the target we are compiling for.
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Can only be used after SDCCmain has defined the port
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*/
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#define TARGET_IS_MCS51 (port->id==TARGET_ID_MCS51)
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#define TARGET_IS_GBZ80 (port->id==TARGET_ID_GBZ80)
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#define TARGET_IS_Z80 (port->id==TARGET_ID_Z80)
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#define TARGET_IS_AVR (port->id==TARGET_ID_AVR)
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#define TARGET_IS_DS390 (port->id==TARGET_ID_DS390)
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#define TARGET_IS_PIC (port->id==TARGET_ID_PIC)
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#define TARGET_IS_I186 (port->id==TARGET_ID_I186)
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#define TARGET_IS_TCLS900H (port->id==TARGET_ID_TCLS900H)
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/* Processor specific names */
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typedef struct
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{
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/** Unique id for this target */
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const int id;
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/** Target name used for -m */
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const char *target;
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/** Target name string, used for --help */
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const char *target_name;
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struct
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{
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/** TRUE if all types of glue functions should be inserted into
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the file that also defines main.
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We dont want this in cases like the z80 where the startup
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code is provided by a seperate module.
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*/
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bool glue_up_main;
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/* OR of MODEL_* */
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int supported_models;
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int default_model;
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}
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general;
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/* assembler related information */
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struct
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{
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/** Command to run and arguments (eg as-z80) */
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const char **cmd;
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/** Alternate macro based form. */
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const char *mcmd;
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/** Arguments for debug mode. */
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const char *debug_opts;
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/** Arguments for normal assembly mode. */
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const char *plain_opts;
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/* print externs as global */
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int externGlobal;
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/* assembler file extension */
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const char *file_ext;
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}
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assembler;
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/* linker related info */
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struct
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{
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/** Command to run (eg link-z80) */
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const char **cmd;
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/** Alternate macro based form. */
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const char *mcmd;
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/** If non-null will be used to execute the link. */
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void (*do_link) (void);
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/** Extention for object files (.rel, .obj, ...) */
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const char *rel_ext;
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}
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linker;
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struct
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{
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/** Default peephole rules */
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char *default_rules;
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}
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peep;
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/** Basic type sizes */
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struct
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{
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int char_size;
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int short_size;
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int int_size;
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int long_size;
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int ptr_size;
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int fptr_size;
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int gptr_size;
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int bit_size;
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int float_size;
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int max_base_size;
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}
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s;
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/** memory regions related stuff */
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struct
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{
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const char *xstack_name;
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const char *istack_name;
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const char *code_name;
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const char *data_name;
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const char *idata_name;
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const char *xdata_name;
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const char *bit_name;
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const char *reg_name;
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const char *static_name;
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const char *overlay_name;
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const char *post_static_name;
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const char *home_name;
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struct memmap *default_local_map; /* default location for auto vars */
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struct memmap *default_globl_map; /* default location for globl vars */
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int code_ro; /* code space read-only 1=yes */
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}
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mem;
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/* stack related information */
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struct
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{
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/** -1 for grows down (z80), +1 for grows up (mcs51) */
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int direction;
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/** Extra overhead when calling between banks */
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int bank_overhead;
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/** Extra overhead when the function is an ISR */
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int isr_overhead;
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/** Standard overhead for a function call */
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int call_overhead;
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/** Re-enterant space */
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int reent_overhead;
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/** 'banked' call overhead.
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Mild overlap with bank_overhead */
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int banked_overhead;
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}
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stack;
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struct
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{
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/** One more than the smallest
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mul/div operation the processor can do nativley
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Eg if the processor has an 8 bit mul, nativebelow is 2 */
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unsigned muldiv;
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unsigned shift;
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}
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support;
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/** Prefix to add to a C function (eg "_") */
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const char *fun_prefix;
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/** Called once the processor target has been selected.
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First chance to initalise and set any port specific variables.
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'port' is set before calling this. May be NULL.
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*/
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void (*init) (void);
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/** Parses one option + its arguments */
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bool (*parseOption) (int *pargc, char **argv, int *i);
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/** Called after all the options have been parsed. */
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void (*finaliseOptions) (void);
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/** Called after the port has been selected but before any
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options are parsed. */
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void (*setDefaultOptions) (void);
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/** Does the dirty work. */
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void (*assignRegisters) (struct eBBlock **, int);
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/** Returns the register name of a symbol.
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Used so that 'regs' can be an incomplete type. */
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const char *(*getRegName) (struct regs * reg);
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/* list of keywords that are used by this
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target (used by lexer) */
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char **keywords;
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/* Write any port specific assembler output. */
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void (*genAssemblerPreamble) (FILE * of);
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/* Write the port specific IVT. If genIVT is NULL or if
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* it returns zero, default (8051) IVT generation code
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* will be used.
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*/
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int (*genIVT) (FILE * of, symbol ** intTable, int intCount);
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/* parameter passing in register related functions */
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void (*reset_regparms) (); /* reset the register count */
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int (*reg_parm) (struct sym_link *); /* will return 1 if can be passed in register */
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/** Process the pragma string 'sz'. Returns 0 if recognised and
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processed, 1 otherwise. May be NULL.
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*/
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int (*process_pragma) (const char *sz);
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/** Mangles a support function name to reflect the calling model.
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*/
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char *(*getMangledFunctionName) (char *szOrginial);
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/** Returns true if the port can multiply the two types nativly
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without using support functions.
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*/
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bool (*hasNativeMulFor) (iCode *ic, sym_link *left, sym_link *right);
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/** If TRUE, then tprintf and !dw will be used for some initalisers
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*/
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bool use_dw_for_init;
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/* condition transformations */
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bool lt_nge; /* transform (a < b) to !(a >= b) */
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bool gt_nle; /* transform (a > b) to !(a <= b) */
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bool le_ngt; /* transform (a <= b) to !(a > b) */
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bool ge_nlt; /* transform (a >= b) to !(a < b) */
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bool ne_neq; /* transform a != b --> ! (a == b) */
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bool eq_nne; /* transform a == b --> ! (a != b) */
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bool arrayInitializerSuppported;
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#define PORT_MAGIC 0xAC32
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/** Used at runtime to detect if this structure has been completly filled in. */
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int magic;
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}
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PORT;
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extern PORT *port;
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#if !OPT_DISABLE_MCS51
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extern PORT mcs51_port;
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#endif
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#if !OPT_DISABLE_GBZ80
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extern PORT gbz80_port;
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#endif
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#if !OPT_DISABLE_Z80
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extern PORT z80_port;
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#endif
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#if !OPT_DISABLE_AVR
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extern PORT avr_port;
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#endif
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#if !OPT_DISABLE_DS390
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extern PORT ds390_port;
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#endif
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#if !OPT_DISABLE_PIC
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extern PORT pic_port;
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#endif
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#if !OPT_DISABLE_I186
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extern PORT i186_port;
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#endif
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#if !OPT_DISABLE_TLCS900H
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extern PORT tlcs900h_port;
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#endif
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#endif /* PORT_INCLUDE*/
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