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-rw-r--r--gas/NOTES69
1 files changed, 35 insertions, 34 deletions
diff --git a/gas/NOTES b/gas/NOTES
index 7b6f6b0..b6c7ade 100644
--- a/gas/NOTES
+++ b/gas/NOTES
@@ -2,23 +2,23 @@
PORTING:
-Sorry, no description of the interfaces is written up yet. Look at
-existing back ends and work from there.
+Sorry, no description of the interfaces is written up yet. Look at existing
+back ends and work from there.
-New hosts: If your host system has a strange header file setup, create
-a config/ho-foo.h file for it and include the appropriate header files
-or definitions there. If your host has a broken compiler, or some
-broken macros in header files, create a host-specific file and repair
-the damage there. (See, for example, ho-rs6000.h. The "assert" macro
-on that system doesn't work right, and a flag is set to rewrite an
-expression in tc-m68k.c that the native compiler mis-compiles.)
+New hosts: If your host system has a strange header file setup, create a
+config/ho-foo.h file for it and include the appropriate header files or
+definitions there. If your host has a broken compiler, or some broken macros
+in header files, create a host-specific file and repair the damage there.
+(See, for example, ho-rs6000.h. The "assert" macro on that system doesn't work
+right, and a flag is set to rewrite an expression in tc-m68k.c that the native
+compiler mis-compiles.)
-New target formats: Look at the BFD_ASSEMBLER code. The a.out code
-might be a fair example. There are no "good" examples yet,
-unfortunately.
+New target formats: Look at the BFD_ASSEMBLER code. The a.out code might be a
+fair example. There are no "good" examples yet, unfortunately, nor any good
+documentation of the changes.
-New target processors: Check first to see if the BFD_ASSEMBLER
-interface is supported by the file format code you need to use.
+New target processors: Check first to see if the BFD_ASSEMBLER interface is
+supported by the file format code you need to use.
New environments: ???
@@ -33,40 +33,41 @@ Anyone want to offer to maintain a man page?
BFD CONVERSION:
-The "#ifdef BFD_ASSEMBLER" code is on its way in; the "#ifndef
-BFD_ASSEMBLER" code is on its way out. The new code uses BFD data
-structures, and calls BFD for anything that needs to be written to the
-output file. The old code did all the writing itself, or in a couple
-of cases, used BFD as a slightly higher level than stdio (i.e.,
-bfd_seek, bfd_write -- these are not the preferred interface).
+The "#ifdef BFD_ASSEMBLER" code is on its way in; the "#ifndef BFD_ASSEMBLER"
+code is on its way out. The new code uses BFD data structures, and calls BFD
+for anything that needs to be written to the output file. The old code did all
+the writing itself, or in a couple of cases, used BFD as a slightly higher
+level than stdio (i.e., bfd_seek, bfd_write -- these are not the preferred
+interface).
Because of this, some of this code is messy. Lots of ifdef's, and the
-non-BFD_ASSEMBLER version often has multiple conditional tests inside
-it for various processors or formats. As the various targets get
-converted over, these will gradually go away.
+non-BFD_ASSEMBLER version often has multiple conditional tests inside it for
+various processors or formats. As the various targets get converted over,
+these will gradually go away.
-As of the moment I'm editing this file, only the "sun4" target can
-really use the BFD code. Other back ends still need merging or
+As of the moment I'm editing this file, only the "sun4" and "decstation-bsd"
+targets can really use the BFD code. Other back ends still need merging or
touching up.
TO DO:
Remove DONTDEF code, commented-out code.
-Eliminate, as much as possible, anything not in config that is
-conditionalized on a CPU, format, or environment.
+Eliminate, as much as possible, anything not in config that is conditionalized
+on a CPU, format, or environment.
-Finish conversion to using BFD for all object file writing. (This is
-the BFD_ASSEMBLER code, not BFD or BFD_HEADERS.) VMS might be the
-tough one here, since there's no BFD support for it at all yet.
-Eliminate the old code.
+Finish conversion to using BFD for all object file writing. (This is the
+BFD_ASSEMBLER code, not BFD or BFD_HEADERS.) VMS might be the tough one here,
+since there's no BFD support for it at all yet. Eliminate the old code.
-Clean up comments; lots of 'em are one previous maintainer griping
-about another previous maintainer, unrelated to the code. (And with
-no names, they're not so fun to read. :-)
+Clean up comments; lots of 'em are one previous maintainer griping about
+another previous maintainer, unrelated to the code. (And with no names,
+they're not so fun to read. :-)
Get Steve to document H8/500 stuff.
+Put together a test suite, using DejaGnu.
+
(From old "NOTES" file to-do list, not really reviewed:)
fix relocation types for i860, perhaps by adding a ref pointer to fixS?