/* Definitions of target machine for GNU compiler,
for ATMEL AVR at90s8515, ATmega103/103L, ATmega603/603L microcontrollers.
- Copyright (C) 1998-2015 Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
Contributed by Denis Chertykov (chertykov@gmail.com)
This file is part of GCC.
#define TARGET_CPU_CPP_BUILTINS() avr_cpu_cpp_builtins (pfile)
-#define AVR_HAVE_JMP_CALL (avr_arch->have_jmp_call)
+#define AVR_SHORT_CALLS (TARGET_SHORT_CALLS \
+ && avr_arch == &avr_arch_types[ARCH_AVRXMEGA3])
+#define AVR_HAVE_JMP_CALL (avr_arch->have_jmp_call && ! AVR_SHORT_CALLS)
#define AVR_HAVE_MUL (avr_arch->have_mul)
#define AVR_HAVE_MOVW (avr_arch->have_movw_lpmx)
#define AVR_HAVE_LPM (!AVR_TINY)
#define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
#define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
#define FLOAT_TYPE_SIZE 32
-#define DOUBLE_TYPE_SIZE 32
-#define LONG_DOUBLE_TYPE_SIZE 32
+#define DOUBLE_TYPE_SIZE (avr_double)
+#define LONG_DOUBLE_TYPE_SIZE (avr_long_double)
+
#define LONG_LONG_ACCUM_TYPE_SIZE 64
#define DEFAULT_SIGNED_CHAR 1
#define FIRST_PSEUDO_REGISTER 36
+#define GENERAL_REGNO_P(N) IN_RANGE (N, 2, 31)
+#define GENERAL_REG_P(X) (REG_P (X) && GENERAL_REGNO_P (REGNO (X)))
+
#define FIXED_REGISTERS {\
1,1,/* r0 r1 */\
0,0,/* r2 r3 */\
#define ADJUST_REG_ALLOC_ORDER avr_adjust_reg_alloc_order()
-#define HARD_REGNO_NREGS(REGNO, MODE) \
- ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
-
-#define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
-
-#define MODES_TIEABLE_P(MODE1, MODE2) 1
-
enum reg_class {
NO_REGS,
R0_REG, /* r0 */
#define REGNO_OK_FOR_INDEX_P(NUM) 0
-#define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) \
- avr_hard_regno_call_part_clobbered (REGNO, MODE)
-
#define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
#define STACK_PUSH_CODE POST_DEC
-#define STACK_GROWS_DOWNWARD
-
-#define STARTING_FRAME_OFFSET avr_starting_frame_offset()
+#define STACK_GROWS_DOWNWARD 1
#define STACK_POINTER_OFFSET 1
} \
} while (0)
-#define BRANCH_COST(speed_p, predictable_p) avr_branch_cost
+/* We increase branch costs after reload in order to keep basic-block
+ reordering from introducing out-of-line jumps and to prefer fall-through
+ edges instead. The default branch costs are 0, mainly because otherwise
+ do_store_flag might come up with bloated code. */
+#define BRANCH_COST(speed_p, predictable_p) \
+ (avr_branch_cost + (reload_completed ? 4 : 0))
#define SLOW_BYTE_ACCESS 0
#define SUPPORTS_INIT_PRIORITY 0
-#define JUMP_TABLES_IN_TEXT_SECTION 0
+/* We pretend jump tables are in text section because otherwise,
+ final.c will switch to .rodata before jump tables and thereby
+ triggers __do_copy_data. As we implement ASM_OUTPUT_ADDR_VEC,
+ we still have full control over the jump tables themselves. */
+#define JUMP_TABLES_IN_TEXT_SECTION 1
#define ASM_COMMENT_START " ; "
fprintf (STREAM, "\tpop\tr%d", REGNO); \
}
-#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
- avr_output_addr_vec_elt (STREAM, VALUE)
+#define ASM_OUTPUT_ADDR_VEC(TLABEL, TDATA) \
+ avr_output_addr_vec (TLABEL, TDATA)
#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
do { \
#undef WORD_REGISTER_OPERATIONS
-#define MOVE_MAX 4
+/* Can move only a single byte from memory to reg in a
+ single instruction. */
-#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
+#define MOVE_MAX 1
+
+/* Allow upto two bytes moves to occur using by_pieces
+ infrastructure */
+
+#define MOVE_MAX_PIECES 2
+
+/* Set MOVE_RATIO to 3 to allow memory moves upto 4 bytes to happen
+ by pieces when optimizing for speed, like it did when MOVE_MAX_PIECES
+ was 4. When optimizing for size, allow memory moves upto 2 bytes.
+ Also see avr_use_by_pieces_infrastructure_p. */
+
+#define MOVE_RATIO(speed) ((speed) ? 3 : 2)
#define Pmode HImode
(LENGTH = avr_adjust_insn_length (INSN, LENGTH))
extern const char *avr_devicespecs_file (int, const char**);
+extern const char *avr_double_lib (int, const char**);
-#define EXTRA_SPEC_FUNCTIONS \
+#define EXTRA_SPEC_FUNCTIONS \
+ { "double-lib", avr_double_lib }, \
{ "device-specs-file", avr_devicespecs_file },
/* Driver self specs has lmited functionality w.r.t. '%s' for dynamic specs.
is used to diagnose problems with reading the specs file. */
#undef DRIVER_SELF_SPECS
-#define DRIVER_SELF_SPECS \
+#define DRIVER_SELF_SPECS \
+ " %:double-lib(%{m*:m%*})" \
" %:device-specs-file(device-specs%s %{mmcu=*:%*})"
/* No libstdc++ for now. Empty string doesn't work. */
/* 'true' if the above is_foo predicates are sanity-checked to avoid
multiple diagnose for the same function. */
int attributes_checked_p;
+
+ /* 'true' - if current function shall not use '__gcc_isr' pseudo
+ instructions as specified by the "no_gccisr" attribute. */
+ int is_no_gccisr;
+
+ /* Used for `__gcc_isr' pseudo instruction handling of
+ non-naked ISR prologue / epilogue(s). */
+ struct
+ {
+ /* 'true' if this function actually uses "*gasisr" insns. */
+ int yes;
+ /* 'true' if this function is allowed to use "*gasisr" insns. */
+ int maybe;
+ /* The register numer as printed by the Done chunk. */
+ int regno;
+ } gasisr;
+
+ /* 'true' if this function references .L__stack_usage like with
+ __builtin_return_address. */
+ int use_L__stack_usage;
};
/* AVR does not round pushes, but the existence of this macro is
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