diff options
Diffstat (limited to 'contrib/binutils/gas/doc/c-arm.texi')
| -rw-r--r-- | contrib/binutils/gas/doc/c-arm.texi | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/contrib/binutils/gas/doc/c-arm.texi b/contrib/binutils/gas/doc/c-arm.texi index e354982..d3de43b 100644 --- a/contrib/binutils/gas/doc/c-arm.texi +++ b/contrib/binutils/gas/doc/c-arm.texi @@ -32,15 +32,18 @@ @cindex @code{-marm} command line option, ARM @item -marm@code{[2|250|3|6|60|600|610|620|7|7m|7d|7dm|7di|7dmi|70|700|700i|710|710c|7100|7500|7500fe|7tdmi|8|810|9|9tdmi|920|strongarm|strongarm110|strongarm1100]} +@itemx -mxscale This option specifies the target processor. The assembler will issue an error message if an attempt is made to assemble an instruction which will not execute on the target processor. @cindex @code{-marmv} command line option, ARM -@item -marmv@code{[2|2a|3|3m|4|4t|5|5t]} +@item -marmv@code{[2|2a|3|3m|4|4t|5|5t|5te]} This option specifies the target architecture. The assembler will issue an error message if an attempt is made to assemble an instruction which will not execute on the target architecture. +The option @code{-marmv5te} specifies that v5t architecture should be +used with the El Segundo extensions enabled. @cindex @code{-mthumb} command line option, ARM @item -mthumb @@ -51,13 +54,13 @@ This option specifies that only Thumb instructions should be assembled. This option specifies that any Arm or Thumb instruction should be assembled. @cindex @code{-mfpa} command line option, ARM -@item -mfpa @var{[10|11]} +@item -mfpa @code{[10|11]} This option specifies the floating point architecture in use on the target processor. @cindex @code{-mfpe-old} command line option, ARM @item -mfpe-old -Do not allow the assemble of floating point multiple instructions. +Do not allow the assembly of floating point multiple instructions. @cindex @code{-mno-fpu} command line option, ARM @item -mno-fpu @@ -69,11 +72,19 @@ This option specifies that the output generated by the assembler should be marked as supporting interworking. @cindex @code{-mapcs} command line option, ARM -@item -mapcs @var{[26|32]} +@item -mapcs @code{[26|32]} This option specifies that the output generated by the assembler should be marked as supporting the indicated version of the Arm Procedure. Calling Standard. +@cindex @code{-matpcs} command line option, ARM +@item -matpcs +This option specifies that the output generated by the assembler should +be marked as supporting the Arm/Thumb Procedure Calling Standard. If +enabled this option will cause the assembler to create an empty +debugging section in the object file called .arm.atpcs. Debuggers can +use this to determine the ABI being used by. + @cindex @code{-mapcs-float} command line option, ARM @item -mapcs-float This indicates the the floating point variant of the APCS should be @@ -98,7 +109,8 @@ be marked as being encoded for a little-endian processor. @cindex @code{-k} command line option, ARM @cindex PIC code generation for ARM @item -k -This option enables the generation of PIC (position independent code). +This option specifies that the output of the assembler should be marked +as position-independent code (PIC). @cindex @code{-moabi} command line option, ARM @item -moabi @@ -129,8 +141,8 @@ the first character of a line, the whole line is treated as a comment. @cindex line separator, ARM @cindex statement separator, ARM @cindex ARM line separator -On ARM systems running the GNU/Linux operating system, @samp{;} can be -used instead of a newline to separate statements. +The @samp{;} character can be used instead of a newline to separate +statements. @cindex immediate character, ARM @cindex ARM immediate character @@ -180,7 +192,7 @@ example: @end smallexample @cindex @code{code} directive, ARM -@item .code @var{[16|32]} +@item .code @code{[16|32]} This directive selects the instruction set being generated. The value 16 selects Thumb, with the value 32 selecting ARM. @@ -203,7 +215,8 @@ This directive specifies that the following symbol is the name of a Thumb encoded function. This information is necessary in order to allow the assembler and linker to generate correct code for interworking between Arm and Thumb instructions and should be used even if -interworking is not going to be performed. +interworking is not going to be performed. The presence of this +directive also implies @code{.thumb} @cindex @code{thumb_set} directive, ARM @item .thumb_set @@ -277,7 +290,7 @@ will not make use of the literal pool. @end smallexample This instruction will load the address of @var{label} into the indicated -register. The instruction will evaluate to one or two a PC relative ADD +register. The instruction will evaluate to one or two PC relative ADD or SUB instructions depending upon where the label is located. If a second instruction is not needed a NOP instruction will be generated in its place, so that this instruction is always 8 bytes long. |
