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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-08-13 18:17:49 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-08-13 18:17:49 +0000 |
| commit | 3e6d74967d4fb055689e5675604f00e4a1608e9f (patch) | |
| tree | aac46681bea9b32fe1c6e4a77fa33e08a63e7bd7 /doc | |
| parent | Updated version information. (diff) | |
| download | rtems-3e6d74967d4fb055689e5675604f00e4a1608e9f.tar.bz2 | |
Added bswap feature.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/supplements/i386/cpumodel.t | 17 | ||||
| -rw-r--r-- | doc/supplements/i386/cpumodel.texi | 17 |
2 files changed, 30 insertions, 4 deletions
diff --git a/doc/supplements/i386/cpumodel.t b/doc/supplements/i386/cpumodel.t index a2efe3e968..d10ccf85f7 100644 --- a/doc/supplements/i386/cpumodel.t +++ b/doc/supplements/i386/cpumodel.t @@ -14,6 +14,7 @@ @menu * CPU Model Dependent Features Introduction:: * CPU Model Dependent Features CPU Model Name:: +* CPU Model Dependent Features bswap Instruction:: * CPU Model Dependent Features Floating Point Unit:: @end menu @end ifinfo @@ -63,7 +64,7 @@ c/src/exec/score/cpu/i386/i386.h based upon the particular CPU model defined on the compilation command line. @ifinfo -@node CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features Floating Point Unit, CPU Model Dependent Features Introduction, CPU Model Dependent Features +@node CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features bswap Instruction, CPU Model Dependent Features Introduction, CPU Model Dependent Features @end ifinfo @section CPU Model Name @@ -72,7 +73,19 @@ the name of this CPU model. For example, for the Intel i386 without an i387 coprocessor, this macro is set to the string "i386 with i387". @ifinfo -@node CPU Model Dependent Features Floating Point Unit, Calling Conventions, CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features +@node CPU Model Dependent Features bswap Instruction, CPU Model Dependent Features Floating Point Unit, CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features +@end ifinfo +@section bswap Instruction + +The macro I386_HAS_BSWAP is set to 1 to indicate that +this CPU model has the @code{bswap} instruction which +endian swaps a thirty-two bit quantity. This instruction +appears to be present in all CPU models +i486's and above. + + +@ifinfo +@node CPU Model Dependent Features Floating Point Unit, Calling Conventions, CPU Model Dependent Features bswap Instruction , CPU Model Dependent Features @end ifinfo @section Floating Point Unit diff --git a/doc/supplements/i386/cpumodel.texi b/doc/supplements/i386/cpumodel.texi index a2efe3e968..d10ccf85f7 100644 --- a/doc/supplements/i386/cpumodel.texi +++ b/doc/supplements/i386/cpumodel.texi @@ -14,6 +14,7 @@ @menu * CPU Model Dependent Features Introduction:: * CPU Model Dependent Features CPU Model Name:: +* CPU Model Dependent Features bswap Instruction:: * CPU Model Dependent Features Floating Point Unit:: @end menu @end ifinfo @@ -63,7 +64,7 @@ c/src/exec/score/cpu/i386/i386.h based upon the particular CPU model defined on the compilation command line. @ifinfo -@node CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features Floating Point Unit, CPU Model Dependent Features Introduction, CPU Model Dependent Features +@node CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features bswap Instruction, CPU Model Dependent Features Introduction, CPU Model Dependent Features @end ifinfo @section CPU Model Name @@ -72,7 +73,19 @@ the name of this CPU model. For example, for the Intel i386 without an i387 coprocessor, this macro is set to the string "i386 with i387". @ifinfo -@node CPU Model Dependent Features Floating Point Unit, Calling Conventions, CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features +@node CPU Model Dependent Features bswap Instruction, CPU Model Dependent Features Floating Point Unit, CPU Model Dependent Features CPU Model Name, CPU Model Dependent Features +@end ifinfo +@section bswap Instruction + +The macro I386_HAS_BSWAP is set to 1 to indicate that +this CPU model has the @code{bswap} instruction which +endian swaps a thirty-two bit quantity. This instruction +appears to be present in all CPU models +i486's and above. + + +@ifinfo +@node CPU Model Dependent Features Floating Point Unit, Calling Conventions, CPU Model Dependent Features bswap Instruction , CPU Model Dependent Features @end ifinfo @section Floating Point Unit |