/* Definitions of target machine for GNU compiler,
for ATMEL AVR at90s8515, ATmega103/103L, ATmega603/603L microcontrollers.
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
- Contributed by Denis Chertykov (denisc@overta.ru)
+ Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+ 2008, 2009 Free Software Foundation, Inc.
+ Contributed by Denis Chertykov (chertykov@gmail.com)
This file is part of GCC.
/* Names to predefine in the preprocessor for this target machine. */
-#define TARGET_CPU_CPP_BUILTINS() \
- do \
- { \
- builtin_define_std ("AVR"); \
- if (avr_base_arch_macro) \
- builtin_define (avr_base_arch_macro); \
- if (avr_extra_arch_macro) \
- builtin_define (avr_extra_arch_macro); \
- if (avr_have_movw_lpmx_p) \
- builtin_define ("__AVR_HAVE_MOVW__"); \
- if (avr_have_movw_lpmx_p) \
- builtin_define ("__AVR_HAVE_LPMX__"); \
- if (avr_asm_only_p) \
- builtin_define ("__AVR_ASM_ONLY__"); \
- if (avr_have_mul_p) \
- builtin_define ("__AVR_ENHANCED__"); \
- if (avr_have_mul_p) \
- builtin_define ("__AVR_HAVE_MUL__"); \
- if (avr_mega_p) \
- builtin_define ("__AVR_MEGA__"); \
- if (TARGET_NO_INTERRUPTS) \
- builtin_define ("__NO_INTERRUPTS__"); \
- } \
- while (0)
+struct base_arch_s {
+ /* Assembler only. */
+ int asm_only;
+
+ /* Core have 'MUL*' instructions. */
+ int have_mul;
+
+ /* Core have 'CALL' and 'JMP' instructions. */
+ int have_jmp_call;
+
+ /* Core have 'MOVW' and 'LPM Rx,Z' instructions. */
+ int have_movw_lpmx;
+
+ /* Core have 'ELPM' instructions. */
+ int have_elpm;
+
+ /* Core have 'ELPM Rx,Z' instructions. */
+ int have_elpmx;
+
+ /* Core have 'EICALL' and 'EIJMP' instructions. */
+ int have_eijmp_eicall;
+
+ /* Reserved for xmega architecture. */
+ int reserved;
+
+ /* Reserved for xmega architecture. */
+ int reserved2;
+
+ /* Default start of data section address for architecture. */
+ int default_data_section_start;
+
+ const char *const macro;
+
+ /* Architecture name. */
+ const char *const arch_name;
+};
+
+/* These names are used as the index into the avr_arch_types[] table
+ above. */
+
+enum avr_arch
+{
+ ARCH_UNKNOWN,
+ ARCH_AVR1,
+ ARCH_AVR2,
+ ARCH_AVR25,
+ ARCH_AVR3,
+ ARCH_AVR31,
+ ARCH_AVR35,
+ ARCH_AVR4,
+ ARCH_AVR5,
+ ARCH_AVR51,
+ ARCH_AVR6
+};
+
+struct mcu_type_s {
+ /* Device name. */
+ const char *const name;
+
+ /* Index in avr_arch_types[]. */
+ int arch;
+
+ /* Must lie outside user's namespace. NULL == no macro. */
+ const char *const macro;
+
+ /* Stack pointer have 8 bits width. */
+ int short_sp;
+
+ /* Start of data section. */
+ int data_section_start;
+
+ /* Name of device library. */
+ const char *const library_name;
+};
+
+extern const struct base_arch_s *avr_current_arch;
+extern const struct mcu_type_s *avr_current_device;
+extern const struct mcu_type_s avr_mcu_types[];
+extern const struct base_arch_s avr_arch_types[];
+
+#define TARGET_CPU_CPP_BUILTINS() avr_cpu_cpp_builtins (pfile)
-extern const char *avr_base_arch_macro;
-extern const char *avr_extra_arch_macro;
-extern int avr_mega_p;
-extern int avr_have_mul_p;
-extern int avr_asm_only_p;
-extern int avr_have_movw_lpmx_p;
#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)
extern GTY(()) section *progmem_section;
#endif
-#define AVR_MEGA (avr_mega_p && !TARGET_SHORT_CALLS)
-#define AVR_HAVE_MUL (avr_have_mul_p)
-#define AVR_HAVE_MOVW (avr_have_movw_lpmx_p)
-#define AVR_HAVE_LPMX (avr_have_movw_lpmx_p)
+#define AVR_HAVE_JMP_CALL (avr_current_arch->have_jmp_call && !TARGET_SHORT_CALLS)
+#define AVR_HAVE_MUL (avr_current_arch->have_mul)
+#define AVR_HAVE_MOVW (avr_current_arch->have_movw_lpmx)
+#define AVR_HAVE_LPMX (avr_current_arch->have_movw_lpmx)
+#define AVR_HAVE_RAMPZ (avr_current_arch->have_elpm)
+#define AVR_HAVE_EIJMP_EICALL (avr_current_arch->have_eijmp_eicall)
+#define AVR_HAVE_8BIT_SP (avr_current_device->short_sp || TARGET_TINY_STACK)
-#define AVR_2_BYTE_PC 1
-#define AVR_3_BYTE_PC 0
+#define AVR_2_BYTE_PC (!AVR_HAVE_EIJMP_EICALL)
+#define AVR_3_BYTE_PC (AVR_HAVE_EIJMP_EICALL)
#define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
/* No data type wants to be aligned rounder than this. */
#define BIGGEST_ALIGNMENT 8
+#define MAX_OFILE_ALIGNMENT (32768 * 8)
+
#define TARGET_VTABLE_ENTRY_ALIGN 8
#define STRICT_ALIGNMENT 0
#define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
+/* The following macro defines cover classes for Integrated Register
+ Allocator. Cover classes is a set of non-intersected register
+ classes covering all hard registers used for register allocation
+ purpose. Any move between two registers of a cover class should be
+ cheaper than load or store of the registers. The macro value is
+ array of register classes with LIM_REG_CLASSES used as the end
+ marker. */
+
+#define IRA_COVER_CLASSES \
+{ \
+ GENERAL_REGS, LIM_REG_CLASSES \
+}
+
#define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
#define INDEX_REG_CLASS NO_REGS
#define STATIC_CHAIN_REGNUM 2
-#define FRAME_POINTER_REQUIRED frame_pointer_required_p()
-
/* Offset from the frame pointer register value to the top of the stack. */
#define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
-#define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM \
- && (TO) == FRAME_POINTER_REGNUM) \
- || (((FROM) == FRAME_POINTER_REGNUM \
- || (FROM) == FRAME_POINTER_REGNUM+1) \
- && ! FRAME_POINTER_REQUIRED \
- ))
-
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
- OFFSET = initial_elimination_offset (FROM, TO)
+ OFFSET = avr_initial_elimination_offset (FROM, TO)
#define RETURN_ADDR_RTX(count, x) \
gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
-#define PUSH_ROUNDING(NPUSHED) (NPUSHED)
+/* Don't use Push rounding. expr.c: emit_single_push_insn is broken
+ for POST_DEC targets (PR27386). */
+/*#define PUSH_ROUNDING(NPUSHED) (NPUSHED)*/
#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
#define RET_REGISTER avr_ret_register ()
-#define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
-
#define LIBCALL_VALUE(MODE) avr_libcall_value (MODE)
#define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
#define HAVE_POST_INCREMENT 1
#define HAVE_PRE_DECREMENT 1
-#define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
-
#define MAX_REGS_PER_ADDRESS 1
-#ifdef REG_OK_STRICT
-# define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
-{ \
- if (legitimate_address_p (mode, operand, 1)) \
- goto ADDR; \
-}
-# else
-# define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
-{ \
- if (legitimate_address_p (mode, operand, 0)) \
- goto ADDR; \
-}
-#endif
-
#define REG_OK_FOR_BASE_NOSTRICT_P(X) \
(REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
#define REG_OK_FOR_INDEX_P(X) 0
-#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
-{ \
- (X) = legitimize_address (X, OLDX, MODE); \
- if (memory_address_p (MODE, X)) \
- goto WIN; \
-}
-
#define XEXP_(X,Y) (X)
+
+/* LEGITIMIZE_RELOAD_ADDRESS will allow register R26/27 to be used, where it
+ is no worse than normal base pointers R28/29 and R30/31. For example:
+ If base offset is greater than 63 bytes or for R++ or --R addressing. */
+
#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
do { \
if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC)) \
} \
if (GET_CODE (X) == PLUS \
&& REG_P (XEXP (X, 0)) \
+ && reg_equiv_constant[REGNO (XEXP (X, 0))] == 0 \
&& GET_CODE (XEXP (X, 1)) == CONST_INT \
&& INTVAL (XEXP (X, 1)) >= 1) \
{ \
OPNUM, TYPE); \
goto WIN; \
} \
- push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
- BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
- OPNUM, TYPE); \
- goto WIN; \
} \
else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
{ \
} \
} while(0)
-#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
-
#define LEGITIMATE_CONSTANT_P(X) 1
#define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
(MODE)==SImode ? 8 : \
(MODE)==SFmode ? 8 : 16)
-#define BRANCH_COST 0
+#define BRANCH_COST(speed_p, predictable_p) 0
#define SLOW_BYTE_ACCESS 0
#define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
+#define SUPPORTS_INIT_PRIORITY 0
+
#define JUMP_TABLES_IN_TEXT_SECTION 0
#define ASM_COMMENT_START " ; "
specific tm.h file (depending upon the particulars of your assembler). */
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
-do { \
- ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
- ASM_OUTPUT_LABEL (FILE, NAME); \
-} while (0)
+avr_asm_declare_function_name ((FILE), (NAME), (DECL))
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
do { \
#define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
-#define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
+#define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
#define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
#define CASE_VECTOR_MODE HImode
-extern int avr_case_values_threshold;
-
-#define CASE_VALUES_THRESHOLD avr_case_values_threshold
-
#undef WORD_REGISTER_OPERATIONS
#define MOVE_MAX 4
#define NO_DOLLAR_IN_LABEL 1
-#define TRAMPOLINE_TEMPLATE(FILE) \
- internal_error ("trampolines not supported")
-
#define TRAMPOLINE_SIZE 4
-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
-{ \
- emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT); \
- emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
-}
/* Store in cc_status the expressions
that the condition codes will describe
after execution of an instruction whose pattern is EXP.
#define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
adjust_insn_length (INSN, LENGTH))
+extern const char *avr_device_to_arch (int argc, const char **argv);
+extern const char *avr_device_to_data_start (int argc, const char **argv);
+extern const char *avr_device_to_startfiles (int argc, const char **argv);
+extern const char *avr_device_to_devicelib (int argc, const char **argv);
+
+#define EXTRA_SPEC_FUNCTIONS \
+ { "device_to_arch", avr_device_to_arch }, \
+ { "device_to_data_start", avr_device_to_data_start }, \
+ { "device_to_startfile", avr_device_to_startfiles }, \
+ { "device_to_devicelib", avr_device_to_devicelib },
+
#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
#define CC1_SPEC "%{profile:-p}"
/* A C string constant that tells the GCC driver program options to
pass to `cc1plus'. */
-#define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;\
+#define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
mmcu=*:-mmcu=%*}"
-#define LINK_SPEC " %{!mmcu*:-m avr2}\
-%{mmcu=at90s1200|\
- mmcu=attiny11|\
- mmcu=attiny12|\
- mmcu=attiny15|\
- mmcu=attiny28:-m avr1}\
-%{mmcu=attiny22|\
- mmcu=attiny26|\
- mmcu=at90s2*|\
- mmcu=at90s4*|\
- mmcu=at90s8*|\
- mmcu=at90c8*|\
- mmcu=at86rf401|\
- mmcu=attiny13|\
- mmcu=attiny2313|\
- mmcu=attiny24|\
- mmcu=attiny25|\
- mmcu=attiny261|\
- mmcu=attiny4*|\
- mmcu=attiny8*:-m avr2}\
-%{mmcu=atmega103|\
- mmcu=at43*|\
- mmcu=at76*:-m avr3}\
-%{mmcu=atmega8*|\
- mmcu=atmega48*|\
- mmcu=at90pwm1|\
- mmcu=at90pwm2|\
- mmcu=at90pwm2b|\
- mmcu=at90pwm3|\
- mmcu=at90pwm3b:-m avr4}\
-%{mmcu=atmega16*|\
- mmcu=atmega32*|\
- mmcu=atmega406|\
- mmcu=atmega64*|\
- mmcu=atmega128*|\
- mmcu=at90can*|\
- mmcu=at90pwm216|\
- mmcu=at90pwm316|\
- mmcu=at90usb*|\
- mmcu=at94k:-m avr5}\
-%{mmcu=atmega324*|\
- mmcu=atmega325*|\
- mmcu=atmega328p|\
- mmcu=atmega329*|\
- mmcu=atmega406|\
- mmcu=atmega48*|\
- mmcu=atmega88*|\
- mmcu=atmega64|\
- mmcu=atmega644*|\
- mmcu=atmega645*|\
- mmcu=atmega649*|\
- mmcu=atmega128|\
- mmcu=atmega162|\
- mmcu=atmega164*|\
- mmcu=atmega165*|\
- mmcu=atmega168*|\
- mmcu=atmega169*|\
- mmcu=atmega8hva|\
- mmcu=atmega16hva|\
- mmcu=attiny48|\
- mmcu=at90can*|\
- mmcu=at90pwm*|\
- mmcu=at90usb*: -Tdata 0x800100}\
-%{mmcu=atmega640|\
- mmcu=atmega1280|\
- mmcu=atmega1281: -Tdata 0x800200} "
+#define LINK_SPEC "\
+%{mrelax:--relax\
+ %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
+ %{mmcu=atmega16*:--pmem-wrap-around=16k}\
+ %{mmcu=atmega32*|\
+ mmcu=at90can32*:--pmem-wrap-around=32k}\
+ %{mmcu=atmega64*|\
+ mmcu=at90can64*|\
+ mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
+%:device_to_arch(%{mmcu=*:%*})\
+%:device_to_data_start(%{mmcu=*:%*})"
#define LIB_SPEC \
"%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
#define LIBGCC_SPEC \
"%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
-#define STARTFILE_SPEC "%(crt_binutils)"
+#define STARTFILE_SPEC "%:device_to_startfile(%{mmcu=*:%*})"
#define ENDFILE_SPEC ""
-#define CRT_BINUTILS_SPECS "\
-%{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
-%{mmcu=attiny11:crttn11.o%s} \
-%{mmcu=attiny12:crttn12.o%s} \
-%{mmcu=attiny15:crttn15.o%s} \
-%{mmcu=attiny28:crttn28.o%s} \
-%{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
-%{mmcu=at90s2313:crts2313.o%s} \
-%{mmcu=at90s2323:crts2323.o%s} \
-%{mmcu=at90s2333:crts2333.o%s} \
-%{mmcu=at90s2343:crts2343.o%s} \
-%{mmcu=attiny22:crttn22.o%s} \
-%{mmcu=attiny26:crttn26.o%s} \
-%{mmcu=at90s4433:crts4433.o%s} \
-%{mmcu=at90s4414:crts4414.o%s} \
-%{mmcu=at90s4434:crts4434.o%s} \
-%{mmcu=at90c8534:crtc8534.o%s} \
-%{mmcu=at90s8535:crts8535.o%s} \
-%{mmcu=at86rf401:crt86401.o%s} \
-%{mmcu=attiny13:crttn13.o%s} \
-%{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
-%{mmcu=attiny24:crttn24.o%s} \
-%{mmcu=attiny44:crttn44.o%s} \
-%{mmcu=attiny84:crttn84.o%s} \
-%{mmcu=attiny25:crttn25.o%s} \
-%{mmcu=attiny45:crttn45.o%s} \
-%{mmcu=attiny85:crttn85.o%s} \
-%{mmcu=attiny261:crttn261.o%s} \
-%{mmcu=attiny461:crttn461.o%s} \
-%{mmcu=attiny861:crttn861.o%s} \
-%{mmcu=attiny43u:crttn43u.o%s} \
-%{mmcu=attiny48:crttn48.o%s} \
-%{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
-%{mmcu=at43usb320:crt43320.o%s} \
-%{mmcu=at43usb355:crt43355.o%s} \
-%{mmcu=at76c711:crt76711.o%s} \
-%{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
-%{mmcu=atmega48:crtm48.o%s} \
-%{mmcu=atmega48p:crtm48p.o%s} \
-%{mmcu=atmega88:crtm88.o%s} \
-%{mmcu=atmega88p:crtm88p.o%s} \
-%{mmcu=atmega8515:crtm8515.o%s} \
-%{mmcu=atmega8535:crtm8535.o%s} \
-%{mmcu=at90pwm1:crt90pwm1.o%s} \
-%{mmcu=at90pwm2:crt90pwm2.o%s} \
-%{mmcu=at90pwm2b:crt90pwm2b.o%s} \
-%{mmcu=at90pwm3:crt90pwm3.o%s} \
-%{mmcu=at90pwm3b:crt90pwm3b.o%s} \
-%{mmcu=atmega16:crtm16.o%s} \
-%{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
-%{mmcu=atmega162:crtm162.o%s} \
-%{mmcu=atmega163:crtm163.o%s} \
-%{mmcu=atmega164p:crtm164p.o%s} \
-%{mmcu=atmega165:crtm165.o%s} \
-%{mmcu=atmega165p:crtm165p.o%s} \
-%{mmcu=atmega168:crtm168.o%s} \
-%{mmcu=atmega168p:crtm168p.o%s} \
-%{mmcu=atmega169:crtm169.o%s} \
-%{mmcu=atmega169p:crtm169p.o%s} \
-%{mmcu=atmega32:crtm32.o%s} \
-%{mmcu=atmega323:crtm323.o%s} \
-%{mmcu=atmega324p:crtm324p.o%s} \
-%{mmcu=atmega325:crtm325.o%s} \
-%{mmcu=atmega325p:crtm325p.o%s} \
-%{mmcu=atmega3250:crtm3250.o%s} \
-%{mmcu=atmega3250p:crtm3250p.o%s} \
-%{mmcu=atmega328p:crtm328p.o%s} \
-%{mmcu=atmega329:crtm329.o%s} \
-%{mmcu=atmega329p:crtm329p.o%s} \
-%{mmcu=atmega3290:crtm3290.o%s} \
-%{mmcu=atmega3290p:crtm3290p.o%s} \
-%{mmcu=atmega406:crtm406.o%s} \
-%{mmcu=atmega64:crtm64.o%s} \
-%{mmcu=atmega640:crtm640.o%s} \
-%{mmcu=atmega644:crtm644.o%s} \
-%{mmcu=atmega644p:crtm644p.o%s} \
-%{mmcu=atmega645:crtm645.o%s} \
-%{mmcu=atmega6450:crtm6450.o%s} \
-%{mmcu=atmega649:crtm649.o%s} \
-%{mmcu=atmega6490:crtm6490.o%s} \
-%{mmcu=atmega128:crtm128.o%s} \
-%{mmcu=atmega1280:crtm1280.o%s} \
-%{mmcu=atmega1281:crtm1281.o%s} \
-%{mmcu=atmega8hva:crtm8hva.o%s} \
-%{mmcu=atmega16hva:crtm16hva.o%s} \
-%{mmcu=at90can32:crtcan32.o%s} \
-%{mmcu=at90can64:crtcan64.o%s} \
-%{mmcu=at90can128:crtcan128.o%s} \
-%{mmcu=at90pwm216:crt90pwm216.o%s} \
-%{mmcu=at90pwm316:crt90pwm316.o%s} \
-%{mmcu=at90usb82:crtusb82.o%s} \
-%{mmcu=at90usb162:crtusb162.o%s} \
-%{mmcu=at90usb646:crtusb646.o%s} \
-%{mmcu=at90usb647:crtusb647.o%s} \
-%{mmcu=at90usb1286:crtusb1286.o%s} \
-%{mmcu=at90usb1287:crtusb1287.o%s} \
-%{mmcu=at94k:crtat94k.o%s}"
-
-#define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
-
/* This is the default without any -mmcu=* option (AT90S*). */
#define MULTILIB_DEFAULTS { "mmcu=avr2" }
#define OBJECT_FORMAT_ELF
+#define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
+ avr_hard_regno_rename_ok (OLD_REG, NEW_REG)
+
/* A C structure for machine-specific, per-function data.
This is added to the cfun structure. */
-struct machine_function GTY(())
+struct GTY(()) machine_function
{
/* 'true' - if current function is a naked function. */
int is_naked;
as specified by the "signal" attribute. */
int is_signal;
- /* 'true' - if current function is a signal function
+ /* 'true' - if current function is a 'task' function
as specified by the "OS_task" attribute. */
int is_OS_task;
+
+ /* 'true' - if current function is a 'main' function
+ as specified by the "OS_main" attribute. */
+ int is_OS_main;
};
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