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* First cut at cleaning up PA instruction parsing.

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* config/tc-hppa.c (pa_get_absolute_expression): Accept pointer to
	insn structure as an argument, and a pointer to a string.  All
	callers changed.  Always read any field selector here.  Call
	evaluate absolute to get a return value.
	(evaluate_absolute): Addept pointer to insn structure as its
	argument.  All callers changed.
	(INSERT_FIELD_AND_CONTINUE): New macro for inserting a bitfield
	into an instruction and continuing the main pa_ip loop.
	(CHECK_FIELD): New macro for simple range checking of fields.
	(pa_ip): Delete unused variables.  Use INSERT_FIELD_AND_CONTINUE
	and CHECK_FIELD.  All immediate fields now pass through
	pa_get_absolute_expression which will also handle field selectors.
	Delete dead code.  Simplify.
	(md_apply_fix_1): Use CHECK_FIELD to verify any fixes that are
	applied are in range.  Use bfd_put_32 rather than inserting each
	byte of the fixed instrution into the buffer ourselves.
This commit is contained in:
Jeff Law
1993-11-07 20:33:18 +00:00
parent 3e411021cc
commit 513f04711d
1 changed files with 18 additions and 0 deletions
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18
gas/ChangeLog
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@ -1,5 +1,23 @@
Sun Nov 7 01:02:08 1993 Jeffrey A. Law (law@snake.cs.utah.edu)
* First cut at cleaning up PA instruction parsing.
* config/tc-hppa.c (pa_get_absolute_expression): Accept pointer to
insn structure as an argument, and a pointer to a string. All
callers changed. Always read any field selector here. Call
evaluate absolute to get a return value.
(evaluate_absolute): Addept pointer to insn structure as its
argument. All callers changed.
(INSERT_FIELD_AND_CONTINUE): New macro for inserting a bitfield
into an instruction and continuing the main pa_ip loop.
(CHECK_FIELD): New macro for simple range checking of fields.
(pa_ip): Delete unused variables. Use INSERT_FIELD_AND_CONTINUE
and CHECK_FIELD. All immediate fields now pass through
pa_get_absolute_expression which will also handle field selectors.
Delete dead code. Simplify.
(md_apply_fix_1): Use CHECK_FIELD to verify any fixes that are
applied are in range. Use bfd_put_32 rather than inserting each
byte of the fixed instrution into the buffer ourselves.
* write.c (fixup_segment): Delete {SEG,GLOBAL}_DIFF_ALLOWED code,
it was PA specific and is no longer needed (it's now handled
within the PA backend).