diff options
Diffstat (limited to 'gcc-4.7/gcc/doc/invoke.texi')
| -rw-r--r-- | gcc-4.7/gcc/doc/invoke.texi | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/gcc-4.7/gcc/doc/invoke.texi b/gcc-4.7/gcc/doc/invoke.texi index 429e62bd4..e8f8973a1 100644 --- a/gcc-4.7/gcc/doc/invoke.texi +++ b/gcc-4.7/gcc/doc/invoke.texi @@ -638,7 +638,7 @@ Objective-C and Objective-C++ Dialects}. -mveclibabi=@var{type} -mvect8-ret-in-mem @gol -mpc32 -mpc64 -mpc80 -mstackrealign @gol -momit-leaf-frame-pointer -mno-red-zone -mno-tls-direct-seg-refs @gol --mcmodel=@var{code-model} -mabi=@var{name} @gol +-mcmodel=@var{code-model} -mabi=@var{name} -maddress-mode=@var{mode} @gol -m32 -m64 -mx32 -mlarge-data-threshold=@var{num} @gol -msse2avx -mfentry -m8bit-idiv @gol -mavx256-split-unaligned-load -mavx256-split-unaligned-store} @@ -13577,6 +13577,12 @@ Attempt to keep the stack boundary aligned to a 2 raised to @var{num} byte boundary. If @option{-mpreferred-stack-boundary} is not specified, the default is 4 (16 bytes or 128 bits). +@strong{Warning:} When generating code for the x86-64 architecture with +SSE extensions disabled, @option{-mpreferred-stack-boundary=3} can be +used to keep the stack boundary aligned to 8 byte boundary. You must +build all modules with @option{-mpreferred-stack-boundary=3}, including +any libraries. This includes the system libraries and startup modules. + @item -mincoming-stack-boundary=@var{num} @opindex mincoming-stack-boundary Assume the incoming stack is aligned to a 2 raised to @var{num} byte @@ -13970,6 +13976,18 @@ be statically or dynamically linked. @opindex mcmodel=large Generate code for the large model: This model makes no assumptions about addresses and sizes of sections. + +@item -maddress-mode=long +@opindex maddress-mode=long +Generate code for long address mode. This is only supported for 64-bit +and x32 environments. It is the default address mode for 64-bit +environments. + +@item -maddress-mode=short +@opindex maddress-mode=short +Generate code for short address mode. This is only supported for 32-bit +and x32 environments. It is the default address mode for 32-bit and +x32 environments. @end table @node i386 and x86-64 Windows Options |