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| author | Marek Michalkiewicz <marekm@linux.org.pl> | 2000-06-24 20:01:26 +0200 |
|---|---|---|
| committer | Denis Chertykov <denisc@gcc.gnu.org> | 2000-06-24 22:01:26 +0400 |
| commit | 78cf8279acfb5c38229579af7d72ce3b9bfc511c (patch) | |
| tree | 5ac9b8f3997175b76bbf24be11bb1c4e821c878a /gcc/config/avr/avr.h | |
| parent | f9f27ee563eb3741820d0fa91196900dd5621108 (diff) | |
| download | gcc-78cf8279acfb5c38229579af7d72ce3b9bfc511c.zip gcc-78cf8279acfb5c38229579af7d72ce3b9bfc511c.tar.gz gcc-78cf8279acfb5c38229579af7d72ce3b9bfc511c.tar.bz2 | |
avr-protos.h (avr_hard_regno_mode_ok): New prototype.
* config/avr/avr-protos.h (avr_hard_regno_mode_ok): New prototype.
* config/avr/avr.c (out_adj_frame_ptr, out_set_stack_ptr):
New functions, common code moved from function_{prologue,epilogue}
and extended to support the -mtiny-stack option.
(function_prologue, function_epilogue): Use them.
Use lo8/hi8 consistently for asm output readability.
(avr_hard_regno_mode_ok): New function.
* config/avr/avr.h (TARGET_SWITCHES): Fix typo. Add -mtiny-stack.
(UNITS_PER_WORD): Define as 4 (not 1) when compiling libgcc2.c.
(HARD_REGNO_MODE_OK): Call the avr_hard_regno_mode_ok function.
* config/avr/avr.md (*mov_sp_r): Add support for -mtiny-stack.
Write SPH before SPL.
(*movqi): No need to disable interrupts for just one "out"
in alternative 5. Change length attribute from 4 to 1.
* config/avr/libgcc.S (__prologue_saves__, __epilogue_restores__):
Write SPH before SPL.
From-SVN: r34678
Diffstat (limited to 'gcc/config/avr/avr.h')
| -rw-r--r-- | gcc/config/avr/avr.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h index b357af5..0096629 100644 --- a/gcc/config/avr/avr.h +++ b/gcc/config/avr/avr.h @@ -52,6 +52,7 @@ extern int target_flags; #define TARGET_NO_INTERRUPTS (target_flags & 0x20000) #define TARGET_INSN_SIZE_DUMP (target_flags & 0x2000) #define TARGET_CALL_PROLOGUES (target_flags & 0x40000) +#define TARGET_TINY_STACK (target_flags & 0x80000) /* Dump each assembler insn's rtl into the output file. This is for debugging the compiler itself. */ @@ -87,7 +88,8 @@ extern int target_flags; {"int8",0x10000,"Assume int to be 8 bit integer"}, \ {"no-interrupts",0x20000,"Don't output interrupt compatible code"}, \ {"call-prologues",0x40000, \ - "Use subroutines for functions prologeu/epilogue"}, \ + "Use subroutines for functions prologue/epilogue"}, \ + {"tiny-stack", 0x80000, "Change only low 8 bits of stack pointer"}, \ {"rtl",0x10, NULL}, \ {"size",0x2000,"Output instruction size's to the asm file"}, \ {"deb",0xfe0, NULL}, \ @@ -194,8 +196,13 @@ extern struct mcu_type_s *avr_mcu_type; Note that this is not necessarily the width of data type `int'; */ #define BITS_PER_WORD 8 +#ifdef IN_LIBGCC2 +/* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits). */ +#define UNITS_PER_WORD 4 +#else /* Width of a word, in units (bytes). */ #define UNITS_PER_WORD 1 +#endif /* Width in bits of a pointer. See also the macro `Pmode' defined below. */ @@ -452,9 +459,7 @@ extern struct mcu_type_s *avr_mcu_type; ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \ / UNITS_PER_WORD)) */ -#define HARD_REGNO_MODE_OK(REGNO, MODE) (((REGNO) >= 24 && (MODE) != QImode) \ - ? ! ((REGNO) & 1) \ - : 1) +#define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE) /* A C expression that is nonzero if it is permissible to store a value of mode MODE in hard register number REGNO (or in several registers starting with that one). For a machine where all |