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Re: PR/7531: Update documentation to mention -mcmodel for x86-64
Jakub Jelinek <jakub@redhat.com> writes:
> On Thu, Aug 08, 2002 at 09:37:14AM +0200, Andreas Jaeger wrote:
>> +@item -mcmodel=large
>> +@opindex mcmodel=large
>> +Generate code for the medium model: This model makes no assumptions
> ^^^^^^ guess this should be large...
It should be. Fixed now - and tested the patch also with running make
info.
Ok to commit for mainline and 3.2.1 now?
Andreas
2002-08-08 Andreas Jaeger <aj@suse.de>
PR target/7531:
* doc/invoke.texi (i386 and x86-64 Options): Document -mcmodel.
============================================================
Index: gcc/doc/invoke.texi
--- gcc/doc/invoke.texi 7 Aug 2002 02:57:53 -0000 1.168
+++ gcc/doc/invoke.texi 8 Aug 2002 07:43:05 -0000
@@ -492,6 +492,7 @@ in the following sections.
-mpush-args -maccumulate-outgoing-args -m128bit-long-double @gol
-m96bit-long-double -mregparm=@var{num} -momit-leaf-frame-pointer @gol
-mno-red-zone@gol
+-mcmodel=@var{code-model} @gol
-m32 -m64}
@emph{HPPA Options}
@@ -7714,6 +7715,32 @@ by the x86-64 ABI, it is a 128-byte area
stack pointer that will not be modified by signal or interrupt handlers
and therefore can be used for temporary data without adjusting the stack
pointer. The flag @option{-mno-red-zone} disables this red zone.
+
+@item -mcmodel=small
+@opindex mcmodel=small
+Generate code for the small code model: the program and its symbols must
+be linked in the lower 2 GB of the address space. Pointers are 64 bits.
+Programs can be statically or dynamically linked. This is the default
+code model.
+
+@item -mcmodel=kernel
+@opindex mcmodel=kernel
+Generate code for the kernel code model. The kernel runs in the
+negative 2 GB of the address space.
+This model has to be used for Linux kernel code.
+
+@item -mcmodel=medium
+@opindex mcmodel=medium
+Generate code for the medium model: The program is linked in the lower 2
+GB of the address space but symbols can be located anywhere in the
+address space. Programs can be statically or dynamically linked, but
+building of shared libraries are not supported with the medium model.
+
+@item -mcmodel=large
+@opindex mcmodel=large
+Generate code for the large model: This model makes no assumptions
+about addresses and sizes of sections. Currently GCC does not implement
+this model.
@end table
@node HPPA Options
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.inka.de
http://www.suse.de/~aj