add AIX 4.3 assembler bug and reorder items.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@18074 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 63 insertions, 51 deletions

diff --git a/gcc/README.RS6000 b/gcc/README.RS6000
index d29604f968a..6507633ce2e 100644
--- a/gcc/README.RS6000
+++ b/gcc/README.RS6000
@@ -1,51 +1,25 @@
-		     AIX 3.1 and 3.2 assembler problems
+			    AIX 4.3 assembler
 
-Specifying the -g flag to GCC on the RS/6000 requires upgrading the
-standard AIX assembler distributed with AIX 3.1 and versions of AIX
-3.2 earlier than 3.2.4 with a replacement that is available from IBM.
-Note that Makefile.in specifies the -g when compiling libgcc2.c.
-
-You can test for the presence of a fixed assembler by entering the following:
-		% as -u < /dev/null
-If the command exits normally, the assembler fix already is installed.
-If the assembler complains that "-u" is an unknown flag, you need to order
-the fix.
-
-If you are running AIX 3.1 (lslpp -h bos.obj output reports
-03.01.0005.XXXX where the 0005 can be any higher number and the XXXX
-can be any value), call IBM Support at 800-237-5511 and ask for
-shipment of AIX/6000 fix PTF U403044 for APAR IX22829 (.extern foo
-conflicts with defining foo).
-
-If you are running AIX 3.2 but not 3.2.4 or later (lslpp -h bos.obj
-output reports 03.02.0000.0000), a newer update to the assembler fix
-is available.  Ask for shipment of AIX/6000 fix PTF U416277 for
-IX32992 (.global prevents detection of duplicate symbol).
-
-If you are running AIX 3.2.4 or later, you already have the new
-assembler.
+The AIX 4.3.0.0 assembler generates incorrect object files if the ".bs"
+pseudo-op references symbols in certain sections.  If GCC is invoked with
+the -g debugging option (including during bootstrapping), incorrect object
+files will be produced and the AIX linker will fail with a severe error.
+A fix for APAR IX74254 (64BIT DISASSEMBLED OUPUT FROM COMPILER FAILS TO
+ASSEMBLE/BIND) is available from IBM Customer Support and IBM's
+service.boulder.ibm.com website.
 
-Any customer can order and get the replacement assembler, and install it on
-one or more machines.  It is available on diskette from IBM Customer Support
-and from the IBM Internet fix anonymous ftp server (FixDist) at
-aix.boulder.ibm.com (198.17.57.66).
 
-If you contact IBM Customer Support, they may also ask you for your customer
-number.  If you do not know it, you will still be able to get the fix, but
-you will have to be persistent.  IBM has corresponding support organizations
-outside of North America.  Call your IBM branch office and ask them to put
-you in touch with the department that handles fixes for AIX/6000.  If that
-doesn't work, ask for the department that handles software defect support
-for AIX/6000 and ask for the APAR fix.
+			      AIX 4.1 binder
 
-If you use the GNU assembler instead of the system supplied assembler, you need
-an assembler modified after October 16th, 1995 in order to build the GNU C
-compiler.  This is because the GNU C compiler wants to build a variant of its
-library, libgcc.a with the -mcpu=common switch to support building programs
-that can run on either the Power or PowerPC machines.
+Due to changes in the way that GCC invokes the binder (linker) for AIX 4.1,
+the link step now may produce warnings of duplicate symbols which were not
+reported before.  The assembly files generated by GCC for AIX always have
+included multiple symbol definitions for certain global variable and
+function declarations in the original program.  The warnings should not
+prevent the linker from producing a correct library or runnable executable.
 
 
-			      AIX NLS problems
+			     AIX NLS problems
 
 AIX on the RS/6000 provides support (NLS) for environments outside of
 the United States.  Compilers and assemblers use NLS to support
@@ -56,7 +30,7 @@ not produce the same floating-point formats that the assembler accepts.
 If you have this problem, set the LANG environment variable to "C" or
 "En_US".
 
-
+				     
 			 AIX 3.2.5 XLC-1.3 problems
 
 XLC version 1.3.0.0 distributed with AIX 3.2.5 will miscompile jump.c when
@@ -72,7 +46,7 @@ releases of xlc-1.2.1, including xlc-1.2.1.8.  Newer releases of xlc-1.2.1
 do not exhibit this problem: xlc-1.2.1.28 is known to bootstrap properly.
 
 
-			AIX 3.2 common-mode support
+		       AIX 3.2 common-mode support
 
 AIX common-mode providing transparent support of both the POWER and PowerPC
 architectures is usable in AIX 3.2.3 and above but an export file and
@@ -101,11 +75,49 @@ __quous         0x3380
 and then link with -Wl,-bI:milli.exp.
 
 
-			       AIX 4.1 binder
+		     AIX 3.1 and 3.2 assembler problems
+
+Specifying the -g flag to GCC on the RS/6000 requires upgrading the
+standard AIX assembler distributed with AIX 3.1 and versions of AIX
+3.2 earlier than 3.2.4 with a replacement that is available from IBM.
+Note that Makefile.in specifies the -g when compiling libgcc2.c.
+
+You can test for the presence of a fixed assembler by entering the following:
+		% as -u < /dev/null
+If the command exits normally, the assembler fix already is installed.
+If the assembler complains that "-u" is an unknown flag, you need to order
+the fix.
+
+If you are running AIX 3.1 (lslpp -h bos.obj output reports
+03.01.0005.XXXX where the 0005 can be any higher number and the XXXX
+can be any value), call IBM Support at 800-237-5511 and ask for
+shipment of AIX/6000 fix PTF U403044 for APAR IX22829 (.extern foo
+conflicts with defining foo).
+
+If you are running AIX 3.2 but not 3.2.4 or later (lslpp -h bos.obj
+output reports 03.02.0000.0000), a newer update to the assembler fix
+is available.  Ask for shipment of AIX/6000 fix PTF U416277 for
+IX32992 (.global prevents detection of duplicate symbol).
+
+If you are running AIX 3.2.4 or later, you already have the new
+assembler.
+
+Any customer can order and get the replacement assembler, and install it on
+one or more machines.  It is available on diskette from IBM Customer Support
+and from the IBM Internet fix anonymous ftp server (FixDist) at
+aix.boulder.ibm.com (198.17.57.66).
+
+If you contact IBM Customer Support, they may also ask you for your customer
+number.  If you do not know it, you will still be able to get the fix, but
+you will have to be persistent.  IBM has corresponding support organizations
+outside of North America.  Call your IBM branch office and ask them to put
+you in touch with the department that handles fixes for AIX/6000.  If that
+doesn't work, ask for the department that handles software defect support
+for AIX/6000 and ask for the APAR fix.
+
+If you use the GNU assembler instead of the system supplied assembler, you need
+an assembler modified after October 16th, 1995 in order to build the GNU C
+compiler.  This is because the GNU C compiler wants to build a variant of its
+library, libgcc.a with the -mcpu=common switch to support building programs
+that can run on either the Power or PowerPC machines.
 
-Due to changes in the way that GCC invokes the binder (linker) for AIX 4.1,
-the link step now may produce warnings of duplicate symbols which were not
-reported before.  The assembly files generated by GCC for AIX always have
-included multiple symbol definitions for certain global variable and
-function declarations in the original program.  The warnings should not
-prevent the linker from producing a correct library or runnable executable.