diff options
| author | tbsaunde <tbsaunde@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-22 01:03:11 +0000 |
|---|---|---|
| committer | tbsaunde <tbsaunde@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-22 01:03:11 +0000 |
| commit | 2b785411c459a847a59e1b980134e8f71e8dbd85 (patch) | |
| tree | caef8679017f122961809268806166d9b3586a86 /gcc/doc/tm.texi | |
| parent | aaa40faeec25d6a17802355474b9e9afb8290c68 (diff) | |
| download | gcc-2b785411c459a847a59e1b980134e8f71e8dbd85.tar.gz | |
always define STACK_GROWS_DOWNWARD
gcc/c-family/ChangeLog:
2015-05-20 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* c-cppbuiltin.c (c_cpp_builtins): Check the value of
STACK_GROWS_DOWNWARD rather than if it is defined.
gcc/ChangeLog:
2015-05-20 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* *.c: Check the value of STACK_GROWS_DOWNWARD rather than if it
is defined.
* config/**/*.h: Define STACK_GROWS_DOWNWARD to an integer.
* defaults.h: Provide default for STACK_GROWS_DOWNWARD.
* doc/tm.texi.in: Update references to STACK_GROWS_DOWNWARD.
* doc/tm.texi: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223513 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 3a89eee7933..f2f34978db4 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -2921,12 +2921,8 @@ This describes the stack layout and calling conventions. Here is the basic stack layout. @defmac STACK_GROWS_DOWNWARD -Define this macro if pushing a word onto the stack moves the stack -pointer to a smaller address. - -When we say, ``define this macro if @dots{}'', it means that the -compiler checks this macro only with @code{#ifdef} so the precise -definition used does not matter. +Define this macro to be true if pushing a word onto the stack moves the stack +pointer to a smaller address, and false otherwise. @end defmac @defmac STACK_PUSH_CODE @@ -2941,7 +2937,7 @@ to the last item on the stack or whether it points to the space for the next item on the stack. The default is @code{PRE_DEC} when @code{STACK_GROWS_DOWNWARD} is -defined, which is almost always right, and @code{PRE_INC} otherwise, +true, which is almost always right, and @code{PRE_INC} otherwise, which is often wrong. @end defmac @@ -9038,7 +9034,7 @@ The default size is @code{FIRST_PSEUDO_REGISTER * sizeof(void *)}. This macro need only be defined if the target might save registers in the function prologue at an offset to the stack pointer that is not aligned to @code{UNITS_PER_WORD}. The definition should be the negative minimum -alignment if @code{STACK_GROWS_DOWNWARD} is defined, and the positive +alignment if @code{STACK_GROWS_DOWNWARD} is true, and the positive minimum alignment otherwise. @xref{SDB and DWARF}. Only applicable if the target supports DWARF 2 frame unwind information. @end defmac |