Message ID | 1394272306-9748-1-git-send-email-sebastian.huber@embedded-brains.de |
---|---|
State | New |
Headers | show |
> gcc/ChangeLog > 2014-03-08 Sebastian Huber <sebastian.huber@embedded-brains.de> > > * doc/invoke.texi (mapp-regs): Clarify. OK modulo: > diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi > index 2ee091a..12b43fa 100644 > --- a/gcc/doc/invoke.texi > +++ b/gcc/doc/invoke.texi > @@ -20818,7 +20818,8 @@ These @samp{-m} options are supported on the SPARC: > @opindex mapp-regs > Specify @option{-mapp-regs} to generate output using the global registers > 2 through 4, which the SPARC SVR4 ABI reserves for applications. This > -is the default. > +is the default. Like the global register 1 the global registers 2 through4 > +are used as volatile registers (may be destroyed across a function > call). I personally don't like the "volatile" wording much, please reuse the wording of the -fcall-used-REG option.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 2ee091a..12b43fa 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -20818,7 +20818,8 @@ These @samp{-m} options are supported on the SPARC: @opindex mapp-regs Specify @option{-mapp-regs} to generate output using the global registers 2 through 4, which the SPARC SVR4 ABI reserves for applications. This -is the default. +is the default. Like the global register 1 the global registers 2 through 4 +are used as volatile registers (may be destroyed across a function call). To be fully SVR4 ABI-compliant at the cost of some performance loss, specify @option{-mno-app-regs}. You should compile libraries and system