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Tue, 31 Oct 2017 17:56:55 -0700 (PDT) Received: from localhost ([12.206.222.5]) by smtp.gmail.com with ESMTPSA id q13sm5838404pfi.166.2017.10.31.17.56.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 31 Oct 2017 17:56:55 -0700 (PDT) Subject: [PATCH] RISC-V: Document the medlow and medany code models Date: Tue, 31 Oct 2017 17:54:06 -0700 Message-Id: <20171101005406.18684-1-palmer@dabbelt.com> Cc: patches@groups.riscv.org, Palmer Dabbelt From: Palmer Dabbelt To: gcc-patches@gcc.gnu.org X-IsSubscribed: yes This documentation is patterned off the aarch64 -mcmodel documentation. gcc/ChangeLog: 2017-10-31 Palmer Dabbelt * doc/invoke.texi (RISC-V Options): Explicitly name the medlow and medany code models, and describe what they do. --- gcc/doc/invoke.texi | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 43acbcbbcd77..8903afaeeffc 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -989,7 +989,7 @@ See RS/6000 and PowerPC Options. -msmall-data-limit=@var{N-bytes} @gol -msave-restore -mno-save-restore @gol -mstrict-align -mno-strict-align @gol --mcmodel=@var{code-model} @gol +-mcmodel=medlow -mcmodel=medany @gol -mexplicit-relocs -mno-explicit-relocs @gol} @emph{RL78 Options} @@ -21765,9 +21765,18 @@ Use smaller but slower prologue and epilogue code. @opindex mstrict-align Do not generate unaligned memory accesses. -@item -mcmodel=@var{code-model} -@opindex mcmodel -Specify the code model. +@item -mcmodel=medlow +@opindex mcmodel=medlow +Generate code for the medium-low code model. The program and its statically +defined symbols must lie within a single 2 GiB address range and must lie +between absolute addresses -2 GiB and +2 GiB. Programs can be statically or +dynamically linked. This is the default code model. + +@item -mcmodel=medany +@opindex mcmodel=medany +Generate code for the medium-any code model. The program and its statically +defined symbols must be within any single 2 GiB address range. Programs can be +statically or dynamically linked. @end table