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| author | Jan Beulich <jbeulich@novell.com> | 2009-07-24 15:41:20 +0000 |
|---|---|---|
| committer | Jan Beulich <jbeulich@novell.com> | 2009-07-24 15:41:20 +0000 |
| commit | 309d33736f82fece9dbeae7a4ba096cdc2d77753 (patch) | |
| tree | af27f997a96225ed278b45e38156d83ae13fb2a6 /gas/doc/c-i386.texi | |
| parent | 20203fb9399bed63f555d79dcd8ad95a5bb0aed6 (diff) | |
| download | gdb-309d33736f82fece9dbeae7a4ba096cdc2d77753.zip gdb-309d33736f82fece9dbeae7a4ba096cdc2d77753.tar.gz gdb-309d33736f82fece9dbeae7a4ba096cdc2d77753.tar.bz2 | |
gas/
2009-07-24 Jan Beulich <jbeulich@novell.com>
* tc-i386.c (cpu_arch): Add .8087, .287, .387, .no87, .nommx,
.nosse, and .noavx.
(cpu_flags_and_not): New.
(set_cpu_arch): Check whether sub-architecture specified is a
feature disable.
(md_parse_option): Likewise.
(parse_real_register): Don't return floating point register
when x87 functionality is disabled.
(md_show_usage): Add new sub-options.
* doc/c-i386.texi: Update with new command line sub-options.
gas/testsuite/
2009-07-24 Jan Beulich <jbeulich@novell.com>
* gas/i386/8087.[ds]: New.
* gas/i386/287.[ds]: New.
* gas/i386/387.[ds]: New.
* gas/i386/no87.[ls]: New.
* gas/i386/no87-2.[ls]: New.
* gas/i386/i386.exp: Run new tests.
* gas/i386/att-regs.s: Also check FPU register access.
* gas/i386/intel-regs.s: Likewise.
* gas/i386/att-regs.d: Adjust expectations.
* gas/i386/intel-regs.d: Likewise.
opcodes/
2009-07-24 Jan Beulich <jbeulich@novell.com>
* i386-dis.c (fgrps): Correct annotation for feni/fdisi. Add
frstpm.
* i386-gen.c (cpu_flag_init): Add FP enabling flags where needed.
(cpu_flags): Add Cpu8087, Cpu287, Cpu387, Cpu687, and CpuFISTTP.
(set_bitfield): Expand CpuFP to Cpu8087|Cpu287|Cpu387.
* i386-opc.h (Cpu8087, Cpu287, Cpu387, Cpu687, CpuFISTTP):
Define.
(union i386_cpu_flags): Add cpu8087, cpu287, cpu387, cpu687,
and cpufisttp.
* i386-opc.tbl: Qualify floating point instructions by their
respective CpuXXX flag. Fix fucom{,p,pp}, fprem1, fsin, fcos,
and fsincos to be avilable only on 387. Fix fstsw ax to be
available only on 287+. Add f{,n}eni, f{,n}disi, f{,n}setpm,
and frstpm.
* i386-init.h, i386-tbl.h: Regenerate.
Diffstat (limited to 'gas/doc/c-i386.texi')
| -rw-r--r-- | gas/doc/c-i386.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi index 9c0e52c..dc276b8 100644 --- a/gas/doc/c-i386.texi +++ b/gas/doc/c-i386.texi @@ -114,7 +114,12 @@ In addition to the basic instruction set, the assembler can be told to accept various extension mnemonics. For example, @code{-march=i686+sse4+vmx} extends @var{i686} with @var{sse4} and @var{vmx}. The following extensions are currently supported: +@code{8087}, +@code{287}, +@code{387}, +@code{no87}, @code{mmx}, +@code{nommx}, @code{sse}, @code{sse2}, @code{sse3}, @@ -122,7 +127,9 @@ accept various extension mnemonics. For example, @code{sse4.1}, @code{sse4.2}, @code{sse4}, +@code{nosse}, @code{avx}, +@code{noavx}, @code{vmx}, @code{smx}, @code{xsave}, @@ -141,6 +148,8 @@ accept various extension mnemonics. For example, @code{svme}, @code{abm} and @code{padlock}. +Note that rather than extending a basic instruction set, the extension +mnemonics starting with @code{no} revoke the respective functionality. When the @code{.arch} directive is used with @option{-march}, the @code{.arch} directive will take precedent. |