diff options
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index e5938fe..24c6b80 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -6821,8 +6821,8 @@ data. @defmac BSS_SECTION_ASM_OP If defined, a C expression whose value is a string, including spacing, containing the assembler operation to identify the following data as -uninitialized global data. If not defined, and neither -@code{ASM_OUTPUT_BSS} nor @code{ASM_OUTPUT_ALIGNED_BSS} are defined, +uninitialized global data. If not defined, and +@code{ASM_OUTPUT_ALIGNED_BSS} not defined, uninitialized global data will be output in the data section if @option{-fno-common} is passed, otherwise @code{ASM_OUTPUT_COMMON} will be used. @@ -7598,20 +7598,19 @@ in place of both @code{ASM_OUTPUT_COMMON} and the variable's decl in order to chose what to output. @end defmac -@defmac ASM_OUTPUT_BSS (@var{stream}, @var{decl}, @var{name}, @var{size}, @var{rounded}) +@defmac ASM_OUTPUT_ALIGNED_BSS (@var{stream}, @var{decl}, @var{name}, @var{size}, @var{alignment}) A C statement (sans semicolon) to output to the stdio stream @var{stream} the assembler definition of uninitialized global @var{decl} named -@var{name} whose size is @var{size} bytes. The variable @var{rounded} -is the size rounded up to whatever alignment the caller wants. +@var{name} whose size is @var{size} bytes. The variable @var{alignment} +is the alignment specified as the number of bits. -Try to use function @code{asm_output_bss} defined in @file{varasm.c} when -defining this macro. If unable, use the expression +Try to use function @code{asm_output_aligned_bss} defined in file +@file{varasm.c} when defining this macro. If unable, use the expression @code{assemble_name (@var{stream}, @var{name})} to output the name itself; before and after that, output the additional assembler syntax for defining the name, and a newline. -There are two ways of handling global BSS@. One is to define either -this macro or its aligned counterpart, @code{ASM_OUTPUT_ALIGNED_BSS}. +There are two ways of handling global BSS@. One is to define this macro. The other is to have @code{TARGET_ASM_SELECT_SECTION} return a switchable BSS section (@pxref{TARGET_HAVE_SWITCHABLE_BSS_SECTIONS}). You do not need to do both. @@ -7623,17 +7622,6 @@ not support global BSS, the front end may choose to make globals common in order to save space in the object file. @end defmac -@defmac ASM_OUTPUT_ALIGNED_BSS (@var{stream}, @var{decl}, @var{name}, @var{size}, @var{alignment}) -Like @code{ASM_OUTPUT_BSS} except takes the required alignment as a -separate, explicit argument. If you define this macro, it is used in -place of @code{ASM_OUTPUT_BSS}, and gives you more flexibility in -handling the required alignment of the variable. The alignment is specified -as the number of bits. - -Try to use function @code{asm_output_aligned_bss} defined in file -@file{varasm.c} when defining this macro. -@end defmac - @defmac ASM_OUTPUT_LOCAL (@var{stream}, @var{name}, @var{size}, @var{rounded}) A C statement (sans semicolon) to output to the stdio stream @var{stream} the assembler definition of a local-common-label named |