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| author | Andreas Krebbel <krebbel1@de.ibm.com> | 2005-10-19 11:00:03 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2005-10-19 11:00:03 +0000 |
| commit | f695eccf71367a91aa87a4ff5a61d365da305d94 (patch) | |
| tree | 8bf9f0bec953868197c70df044f850d5f8d177c9 /gcc/doc/invoke.texi | |
| parent | d1f36c51be6d9560caa7931e970bd1905da2ebe5 (diff) | |
| download | gcc-f695eccf71367a91aa87a4ff5a61d365da305d94.zip gcc-f695eccf71367a91aa87a4ff5a61d365da305d94.tar.gz gcc-f695eccf71367a91aa87a4ff5a61d365da305d94.tar.bz2 | |
s390.c (override_options): Added check for -mstack-size 64k limitation.
2005-10-19 Andreas Krebbel <krebbel1@de.ibm.com>
* config/s390/s390.c (override_options): Added check for -mstack-size
64k limitation.
* doc/invoke.texi: Mention that limit in the documenation.
From-SVN: r105609
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 4d8e67a..8bbbb04 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -11659,9 +11659,10 @@ back end emits additional instructions in the function prologue which trigger a if the stack size is @var{stack-guard} bytes above the @var{stack-size} (remember that the stack on s390 grows downward). These options are intended to be used to help debugging stack overflow problems. The additionally emitted code -cause only little overhead and hence can also be used in production like systems +causes only little overhead and hence can also be used in production like systems without greater performance degradation. The given values have to be exact -powers of 2 and @var{stack-size} has to be greater than @var{stack-guard}. +powers of 2 and @var{stack-size} has to be greater than @var{stack-guard} without +exceeding 64k. In order to be efficient the extra code makes the assumption that the stack starts at an address aligned to the value given by @var{stack-size}. @end table |