| Message ID | 20230727214120.18783-1-david.faust@oracle.com |
|---|---|
| State | New |
| Headers | show |
| Series | bpf: minor doc cleanup for command-line options | expand |
Hi David, thanks for the patch. OK. > This patch makes some minor cleanups to eBPF options documented in > invoke.texi: > - Delete some vestigal docs for removed -mkernel option > - Add -mbswap and -msdiv to the option summary > - Note the negative versions of several options > - Note that -mcpu=v4 also enables -msdiv. > > gcc/ > > * doc/invoke.texi (Option Summary): Remove -mkernel eBPF option. > Add -mbswap and -msdiv eBPF options. > (eBPF Options): Remove -mkernel. Add -mno-{jmpext, jmp32, > alu32, v3-atomics, bswap, sdiv}. Document that -mcpu=v4 also > enables -msdiv. > --- > gcc/doc/invoke.texi | 48 ++++++++++++++++++++++----------------------- > 1 file changed, 23 insertions(+), 25 deletions(-) > > diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi > index e0fd7bd5b72..91113dd5821 100644 > --- a/gcc/doc/invoke.texi > +++ b/gcc/doc/invoke.texi > @@ -945,9 +945,10 @@ Objective-C and Objective-C++ Dialects}. > -mmemory-latency=@var{time}} > > @emph{eBPF Options} > -@gccoptlist{-mbig-endian -mlittle-endian -mkernel=@var{version} > +@gccoptlist{-mbig-endian -mlittle-endian > -mframe-limit=@var{bytes} -mxbpf -mco-re -mno-co-re -mjmpext > --mjmp32 -malu32 -mv3-atomics -mcpu=@var{version} -masm=@var{dialect}} > +-mjmp32 -malu32 -mv3-atomics -mbswap -msdiv -mcpu=@var{version} > +-masm=@var{dialect}} > > @emph{FR30 Options} > @gccoptlist{-msmall-model -mno-lsim} > @@ -24674,18 +24675,6 @@ the value that can be specified should be less than or equal to > @samp{32767}. Defaults to whatever limit is imposed by the version of > the Linux kernel targeted. > > -@opindex mkernel > -@item -mkernel=@var{version} > -This specifies the minimum version of the kernel that will run the > -compiled program. GCC uses this version to determine which > -instructions to use, what kernel helpers to allow, etc. Currently, > -@var{version} can be one of @samp{4.0}, @samp{4.1}, @samp{4.2}, > -@samp{4.3}, @samp{4.4}, @samp{4.5}, @samp{4.6}, @samp{4.7}, > -@samp{4.8}, @samp{4.9}, @samp{4.10}, @samp{4.11}, @samp{4.12}, > -@samp{4.13}, @samp{4.14}, @samp{4.15}, @samp{4.16}, @samp{4.17}, > -@samp{4.18}, @samp{4.19}, @samp{4.20}, @samp{5.0}, @samp{5.1}, > -@samp{5.2}, @samp{latest} and @samp{native}. > - > @opindex mbig-endian > @item -mbig-endian > Generate code for a big-endian target. > @@ -24696,30 +24685,38 @@ Generate code for a little-endian target. This is the default. > > @opindex mjmpext > @item -mjmpext > -Enable generation of extra conditional-branch instructions. > +@itemx -mno-jmpext > +Enable or disable generation of extra conditional-branch instructions. > Enabled for CPU v2 and above. > > @opindex mjmp32 > @item -mjmp32 > -Enable 32-bit jump instructions. Enabled for CPU v3 and above. > +@itemx -mno-jmp32 > +Enable or disable generation of 32-bit jump instructions. > +Enabled for CPU v3 and above. > > @opindex malu32 > @item -malu32 > -Enable 32-bit ALU instructions. Enabled for CPU v3 and above. > +@itemx -mno-alu32 > +Enable or disable generation of 32-bit ALU instructions. > +Enabled for CPU v3 and above. > + > +@opindex mv3-atomics > +@item -mv3-atomics > +@itemx -mno-v3-atomics > +Enable or disable instructions for general atomic operations introduced > +in CPU v3. Enabled for CPU v3 and above. > > @opindex mbswap > @item -mbswap > -Enable byte swap instructions. Enabled for CPU v4 and above. > +@itemx -mno-bswap > +Enable or disable byte swap instructions. Enabled for CPU v4 and above. > > @opindex msdiv > @item -msdiv > -Enable signed division and modulus instructions. Enabled for CPU v4 > -and above. > - > -@opindex mv3-atomics > -@item -mv3-atomics > -Enable instructions for general atomic operations introduced in CPU v3. > -Enabled for CPU v3 and above. > +@itemx -mno-sdiv > +Enable or disable signed division and modulus instructions. Enabled for > +CPU v4 and above. > > @opindex mcpu > @item -mcpu=@var{version} > @@ -24747,6 +24744,7 @@ All features of v2, plus: > All features of v3, plus: > @itemize @minus > @item Byte swap instructions, as in @option{-mbswap} > +@item Signed division and modulus instructions, as in @option{-msdiv} > @end itemize > @end table
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index e0fd7bd5b72..91113dd5821 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -945,9 +945,10 @@ Objective-C and Objective-C++ Dialects}. -mmemory-latency=@var{time}} @emph{eBPF Options} -@gccoptlist{-mbig-endian -mlittle-endian -mkernel=@var{version} +@gccoptlist{-mbig-endian -mlittle-endian -mframe-limit=@var{bytes} -mxbpf -mco-re -mno-co-re -mjmpext --mjmp32 -malu32 -mv3-atomics -mcpu=@var{version} -masm=@var{dialect}} +-mjmp32 -malu32 -mv3-atomics -mbswap -msdiv -mcpu=@var{version} +-masm=@var{dialect}} @emph{FR30 Options} @gccoptlist{-msmall-model -mno-lsim} @@ -24674,18 +24675,6 @@ the value that can be specified should be less than or equal to @samp{32767}. Defaults to whatever limit is imposed by the version of the Linux kernel targeted. -@opindex mkernel -@item -mkernel=@var{version} -This specifies the minimum version of the kernel that will run the -compiled program. GCC uses this version to determine which -instructions to use, what kernel helpers to allow, etc. Currently, -@var{version} can be one of @samp{4.0}, @samp{4.1}, @samp{4.2}, -@samp{4.3}, @samp{4.4}, @samp{4.5}, @samp{4.6}, @samp{4.7}, -@samp{4.8}, @samp{4.9}, @samp{4.10}, @samp{4.11}, @samp{4.12}, -@samp{4.13}, @samp{4.14}, @samp{4.15}, @samp{4.16}, @samp{4.17}, -@samp{4.18}, @samp{4.19}, @samp{4.20}, @samp{5.0}, @samp{5.1}, -@samp{5.2}, @samp{latest} and @samp{native}. - @opindex mbig-endian @item -mbig-endian Generate code for a big-endian target. @@ -24696,30 +24685,38 @@ Generate code for a little-endian target. This is the default. @opindex mjmpext @item -mjmpext -Enable generation of extra conditional-branch instructions. +@itemx -mno-jmpext +Enable or disable generation of extra conditional-branch instructions. Enabled for CPU v2 and above. @opindex mjmp32 @item -mjmp32 -Enable 32-bit jump instructions. Enabled for CPU v3 and above. +@itemx -mno-jmp32 +Enable or disable generation of 32-bit jump instructions. +Enabled for CPU v3 and above. @opindex malu32 @item -malu32 -Enable 32-bit ALU instructions. Enabled for CPU v3 and above. +@itemx -mno-alu32 +Enable or disable generation of 32-bit ALU instructions. +Enabled for CPU v3 and above. + +@opindex mv3-atomics +@item -mv3-atomics +@itemx -mno-v3-atomics +Enable or disable instructions for general atomic operations introduced +in CPU v3. Enabled for CPU v3 and above. @opindex mbswap @item -mbswap -Enable byte swap instructions. Enabled for CPU v4 and above. +@itemx -mno-bswap +Enable or disable byte swap instructions. Enabled for CPU v4 and above. @opindex msdiv @item -msdiv -Enable signed division and modulus instructions. Enabled for CPU v4 -and above. - -@opindex mv3-atomics -@item -mv3-atomics -Enable instructions for general atomic operations introduced in CPU v3. -Enabled for CPU v3 and above. +@itemx -mno-sdiv +Enable or disable signed division and modulus instructions. Enabled for +CPU v4 and above. @opindex mcpu @item -mcpu=@var{version} @@ -24747,6 +24744,7 @@ All features of v2, plus: All features of v3, plus: @itemize @minus @item Byte swap instructions, as in @option{-mbswap} +@item Signed division and modulus instructions, as in @option{-msdiv} @end itemize @end table
This patch makes some minor cleanups to eBPF options documented in invoke.texi: - Delete some vestigal docs for removed -mkernel option - Add -mbswap and -msdiv to the option summary - Note the negative versions of several options - Note that -mcpu=v4 also enables -msdiv. gcc/ * doc/invoke.texi (Option Summary): Remove -mkernel eBPF option. Add -mbswap and -msdiv eBPF options. (eBPF Options): Remove -mkernel. Add -mno-{jmpext, jmp32, alu32, v3-atomics, bswap, sdiv}. Document that -mcpu=v4 also enables -msdiv. --- gcc/doc/invoke.texi | 48 ++++++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 25 deletions(-)