Document behaviour of .align 0 for ARM targets.

Remove incomplete v5e code from tc-arm.c

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 6656afa..3401f76 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2000-04-24  Nick Clifton  <nickc@cygnus.com>
+
+       * doc/c-arm.texi (ARM Directives): Document behaviour of .align 0.
+       * doc/as.texinfo (Align): Include arm and strongarm in list of
+       targets that have the second form of the behaviour of the .align
+       directive. 
+
 2000-04-24  Mark Klein <mklein@dis.com>
 
         * obj-som.c: Terminate obj_pseudo_table.

diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index f4f7398..109de30 100644 (file)
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -52,7 +52,6 @@
 #define ARM_HALFWORD    0x00000020     /* allow half word loads */
 #define ARM_THUMB       0x00000040     /* allow BX instruction  */
 #define ARM_EXT_V5     0x00000080      /* allow CLZ etc         */
-#define ARM_EXT_V5E     0x00000200     /* "El Segundo"          */
 
 /* Architectures are the sum of the base and extensions.  */
 #define ARM_ARCH_V4    (ARM_7 | ARM_LONGMUL | ARM_HALFWORD)
@@ -6748,7 +6747,6 @@ md_parse_option (c, arg)
                  switch (*++str)
                    {
                    case 't': cpu_variant |= ARM_THUMB; break;
-                   case 'e': cpu_variant |= ARM_EXT_V5E; break;
                    case 0:   break;
                    default:
                      as_bad (_("Invalid architecture variant -m%s"), arg);

diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo
index f9cf578..ce598e5 100644 (file)
--- a/gas/doc/as.texinfo
+++ b/gas/doc/as.texinfo
@@ -3296,7 +3296,8 @@ alignment request in bytes.  For example @samp{.align 8} advances
 the location counter until it is a multiple of 8.  If the location counter
 is already a multiple of 8, no change is needed.
 
-For other systems, including the i386 using a.out format, it is the
+For other systems, including the i386 using a.out format, and the arm and
+strongarm, it is the
 number of low-order zero bits the location counter must have after
 advancement.  For example @samp{.align 3} advances the location
 counter until it a multiple of 8.  If the location counter is already a

diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index ff98d7f..e354982 100644 (file)
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -1,4 +1,4 @@
-@c Copyright (C) 1996, 1998, 1999 Free Software Foundation, Inc.
+@c Copyright (C) 1996, 1998, 1999, 2000 Free Software Foundation, Inc.
 @c This is part of the GAS manual.
 @c For copying conditions, see the file as.texinfo.
 
@@ -27,66 +27,86 @@
 @section Options
 @cindex ARM options (none)
 @cindex options for ARM (none)
+
 @table @code
+
 @cindex @code{-marm} command line option, ARM
-@item -marm [@var{2}|@var{250}|@var{3}|@var{6}|@var{60}|@var{600}|@var{610}|@var{620}|@var{7}|@var{7m}|@var{7d}|@var{7dm}|@var{7di}|@var{7dmi}|@var{70}|@var{700}|@var{700i}|@var{710}|@var{710c}|@var{7100}|@var{7500}|@var{7500fe}|@var{7tdmi}|@var{8}|@var{810}|@var{9}|@var{9tdmi}|@var{920}|@var{strongarm}|@var{strongarm110}|@var{strongarm1100}]
+@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]}
 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 [@var{2}|@var{2a}|@var{3}|@var{3m}|@var{4}|@var{4t}|@var{5}|@var{5t}]
+@item -marmv@code{[2|2a|3|3m|4|4t|5|5t]}
 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.
+
 @cindex @code{-mthumb} command line option, ARM
 @item -mthumb
 This option specifies that only Thumb instructions should be assembled.
+
 @cindex @code{-mall} command line option, ARM
 @item -mall
 This option specifies that any Arm or Thumb instruction should be assembled.
+
 @cindex @code{-mfpa} command line option, ARM
-@item -mfpa [@var{10}|@var{11}]
+@item -mfpa @var{[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.
+
 @cindex @code{-mno-fpu} command line option, ARM
 @item -mno-fpu
 Do not allow the assembly of any floating point instructions.
+
 @cindex @code{-mthumb-interwork} command line option, ARM
 @item -mthumb-interwork
 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}|@var{32}]
+@item -mapcs @var{[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{-mapcs-float} command line option, ARM
 @item -mapcs-float
 This indicates the the floating point variant of the APCS should be
 used.  In this variant floating point arguments are passed in FP
 registers rather than integer registers.
+
+@cindex @code{-mapcs-reentrant} command line option, ARM
 @item -mapcs-reentrant
 This indicates that the reentrant variant of the APCS should be used.
 This variant supports position independent code.
+
 @cindex @code{-EB} command line option, ARM
 @item -EB
 This option specifies that the output generated by the assembler should
 be marked as being encoded for a big-endian processor.
+
 @cindex @code{-EL} command line option, ARM
 @item -EL
 This option specifies that the output generated by the assembler should
 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).
+
+@cindex @code{-moabi} command line option, ARM
 @item -moabi
 This indicates that the code should be assembled using the old ARM ELF
 conventions, based on a beta release release of the ARM-ELF
 specifications, rather than the default conventions which are based on
 the final release of the ARM-ELF specifications.
+
 @end table
 
 
@@ -143,6 +163,13 @@ The ARM family uses @sc{ieee} floating-point numbers.
 @cindex ARM machine directives
 @table @code
 
+@cindex @code{align} directive, ARM
+@item .align @var{expression} [, @var{expression}]
+This is the generic @var{.align} directive.  For the ARM however if the
+first argument is zero (ie no alignment is needed) the assembler will
+behave as if the argument had been 2 (ie pad to the next four byte
+boundary).  This is for compatability with ARM's own assembler.
+
 @cindex @code{req} directive, ARM
 @item @var{name} .req @var{register name}
 This creates an alias for @var{register name} called @var{name}.  For
@@ -153,7 +180,7 @@ example:
 @end smallexample
 
 @cindex @code{code} directive, ARM
-@item .code [@var{16}|@var{32}]
+@item .code @var{[16|32]}
 This directive selects the instruction set being generated. The value 16
 selects Thumb, with the value 32 selecting ARM.