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Diffstat (limited to 'gas/NOTES.config')
| -rw-r--r-- | gas/NOTES.config | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/gas/NOTES.config b/gas/NOTES.config deleted file mode 100644 index bc473be..0000000 --- a/gas/NOTES.config +++ /dev/null @@ -1,42 +0,0 @@ - - The GAS Configuration Plan - -Theory: - -The goal of the new configuration scheme is to bury all object format -and target processor dependancies in object and target specific files. -That is, to move all #ifdef's out of the gas common code. - -Here's how it works. There is a .h and a .c file for each object file -format and a .h and a .c file for each target processor. The -configure script creates symlinks in the current directory to the -appropriate files in the config directory. configure also serves as a -list of triplets {host, target, object-format} that have been tested -at one time or another. I also recommend that configure be used to -document triplet specific notes as to purpose of the triplet, etc. - -Implementation: - -obj-format.h is a {sym}link to .../config/obj-something.h. It is intended - -All gas .c files include as.h. - -as.h #define's "GAS", includes config.h, defines a number of gas -specific structures and types, and then includes tc.h, obj.h, and -targ-env.h. - -targ-env.h defines a target environment specific preprocessor flag, -eg, TE_SUN, and then includes obj-format.h. - -obj-format.h defines an object format specific preprocessor flag, eg, -OBJ_AOUT, OBJ_BOUT, OBJ_COFF, includes "targ-cpu.h", and then defines -the object specific macros, functions, types, and structures. - -targ-cpu.h - -targ-cpu.c - -Porting: - -There appear to be four major types of ports; new hosts, new target -processors, new object file formats, and new target environments. |