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2002-12-27 Roland McGrath <roland@redhat.com>

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* scripts/gen-as-const.awk: New file.
	* Makefile (distribute): Add it.
	* Makerules ($(common-objpfx)%.h %.h.d: %.sym): New pattern rule.
	(before-compile): Add $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
	to the list.
	(+depfiles): Add $(addprefix $(common-objpfx),$(gen-as-const-headers)).
This commit is contained in:
Roland McGrath
2002-12-27 23:05:53 +00:00
parent 4f172c25f1
commit aad08dbad9
3 changed files with 49 additions and 2 deletions
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29
scripts/gen-as-const.awk Normal file
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# Script used in producing headers of assembly constants from C expressions.
# The input to this script looks like:
# #cpp-directive ...
# NAME1
# NAME2 expression ...
# The output of this script is C code to be run through gcc -S and then
# massaged to extract the integer constant values of the given C expressions.
# A line giving just a name implies an expression consisting of just that name.
BEGIN { started = 0 }
# cpp directives go straight through.
/^#/ { print; next }
NF >= 1 && !started {
print "void dummy(void) {";
started = 1;
}
NF == 1 { sub(/^.*$/, "& &"); }
NF > 1 {
name = $1;
sub(/^[^ ]+[ ]+/, "");
printf "asm (\"@@@name@@@%s@@@value@@@%%0@@@end@@@\" : : \"i\" (%s));\n",
name, $0;
}
END { if (started) print "}" }