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| author | DJ Delorie <dj@redhat.com> | 2004-08-17 18:51:28 -0400 |
|---|---|---|
| committer | DJ Delorie <dj@gcc.gnu.org> | 2004-08-17 18:51:28 -0400 |
| commit | 54e9a19d9d7113828f585504d126e1a0c01fed77 (patch) | |
| tree | eaaa0a4a229363772043a644402f2d73e2975780 /gcc/doc | |
| parent | c3f84f61e3c13e4e16483cfc63322efe5a7949fd (diff) | |
| download | gcc-54e9a19d9d7113828f585504d126e1a0c01fed77.zip gcc-54e9a19d9d7113828f585504d126e1a0c01fed77.tar.gz gcc-54e9a19d9d7113828f585504d126e1a0c01fed77.tar.bz2 | |
extend.texi: Document new xstormy16 attribute.
* doc/extend.texi: Document new xstormy16 attribute.
* config/stormy16/stormy16.c (xstormy16_splittable_below100_operand): New.
(xstormy16_splittable_below100_or_register): New.
(combine_bnp): New.
(xstormy16_reorg): New.
(TARGET_MACHINE_DEPENDENT_REORG): Define.
* config/stormy16/stormy16.md (movqi_internal): Make name public.
(movhi_internal): Likewise.
(cbhranchhi): Likewise.
(cbhranchhi_neg): Likewise.
(andhi3): Only allow splittable below100 operands.
(iorhi3): Likewise.
(peephole2): New and/zero_extend->and peephole.
(peephole2): New load/ior/save->set1 peephole.
(peephole2): New load/and/save->clr1 peephole.
(bclrx, bclrx2, bclr7, bclr15): New.
(bsetx, bsetx2, bset7, bset15): New.
* config/stormy16/stormy16.c (xstormy16_print_operand): Be more
liberal about acceptable 'B' masks.
* config/stormy16/stormy16-protos.h
(xstormy16_asm_output_aligned_common, xstormy16_below100_symbol,
xstormy16_below100_operand, xstormy16_below100_or_register,
xstormy16_onebit_set_operand, xstormy16_onebit_clr_operand): New.
(PREDICATE_CODES): Add new predicates.
* config/stormy16/stormy16.c
(xstormy16_asm_output_aligned_common, xstormy16_below100_symbol,
xstormy16_below100_operand, xstormy16_below100_or_register,
xstormy16_onebit_set_operand, xstormy16_onebit_clr_operand): New.
(xstormy16_expand_iorqi3, xstormy16_expand_andqi3): New.
(xstormy16_legitimate_address_p): Allow below100 symbols.
(xstormy16_extra_constraint_p): Add 'W' for below100 operands.
(xstormy16_expand_move): Leave below100 operands as-is.
(xstormy16_encode_section_info): Encode below100 symbols.
(xstormy16_strip_name_encoding): New.
(xstormy16_print_operand): Print 'b' as shift mask.
(xstormy16_attribute_table): Add below100 attributes.
(xstormy16_handle_below100_attribute): New.
* config/stormy16/stormy16.h (EXTRA_SECTIONS): add in_bss100.
(XSTORMY16_SECTION_FUNCTION): New.
(EXTRA_SECTION_FUNCTIONS): Define using the above.
(ASM_OUTPUT_ALIGNED_DECL_COMMON, ASM_OUTPUT_ALIGNED_DECL_LOCAL): New.
(ASM_OUTPUT_SYMBOL_REF): Handle encoded symbols.
(ASM_OUTPUT_LABELREF): Define.
* config/stormy16/stormy16.md (movqi_internal): Add below100 support.
(movhi_internal): Add below100 support.
(andhi3): Add below100 support.
(iorhi3): Add below100 support.
(iorqi3, iorqi3_internal, andqi3, andqi3_internal): New.
From-SVN: r86154
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/extend.texi | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index b7229d0..5023f27 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -2977,6 +2977,23 @@ Currently @option{-m[no-]ms-bitfields} is provided for the Microsoft Windows X86 compilers to match the native Microsoft compiler. @end table +@subsection Xstormy16 Variable Attributes + +One attribute is currently defined for xstormy16 configurations: +@code{below100} + +@table @code +@item below100 +@cindex @code{below100} attribute + +If a variable has the @code{below100} attribute (@code{BELOW100} is +allowed also), GCC will place the variable in the first 0x100 bytes of +memory and use special opcodes to access it. Such variables will be +placed in either the @code{.bss_below100} section or the +@code{.data_below100} section. + +@end table + @node Type Attributes @section Specifying Attributes of Types @cindex attribute of types |