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Added bswap feature.

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This commit is contained in:
Joel Sherrill
1998-08-13 18:17:49 +00:00
parent f6f0b30a28
commit 3e6d74967d
2 changed files with 30 additions and 4 deletions
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17
doc/supplements/i386/cpumodel.t
View File

@@ -14,6 +14,7 @@
@menu @menu
* CPU Model Dependent Features Introduction:: * CPU Model Dependent Features Introduction::
* CPU Model Dependent Features CPU Model Name:: * CPU Model Dependent Features CPU Model Name::
* CPU Model Dependent Features bswap Instruction::
* CPU Model Dependent Features Floating Point Unit:: * CPU Model Dependent Features Floating Point Unit::
@end menu @end menu
@end ifinfo @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. model defined on the compilation command line.
@ifinfo @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 @end ifinfo
@section CPU Model Name @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". i387 coprocessor, this macro is set to the string "i386 with i387".
@ifinfo @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 @end ifinfo
@section Floating Point Unit @section Floating Point Unit

17
doc/supplements/i386/cpumodel.texi
View File

@@ -14,6 +14,7 @@
@menu @menu
* CPU Model Dependent Features Introduction:: * CPU Model Dependent Features Introduction::
* CPU Model Dependent Features CPU Model Name:: * CPU Model Dependent Features CPU Model Name::
* CPU Model Dependent Features bswap Instruction::
* CPU Model Dependent Features Floating Point Unit:: * CPU Model Dependent Features Floating Point Unit::
@end menu @end menu
@end ifinfo @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. model defined on the compilation command line.
@ifinfo @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 @end ifinfo
@section CPU Model Name @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". i387 coprocessor, this macro is set to the string "i386 with i387".
@ifinfo @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 @end ifinfo
@section Floating Point Unit @section Floating Point Unit