1 ?RCS: $Id: registers.U 1 2006-08-24 12:32:52Z rmanfredi $
3 ?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
5 ?RCS: You may redistribute only under the terms of the Artistic Licence,
6 ?RCS: as specified in the README file that comes with the distribution.
7 ?RCS: You may reuse parts of this distribution only within the terms of
8 ?RCS: that same Artistic Licence; a copy of which may be found at the root
9 ?RCS: of the source tree for dist 4.0.
11 ?RCS: $Log: registers.U,v $
12 ?RCS: Revision 3.0.1.2 1997/02/28 16:19:41 ram
13 ?RCS: patch61: removed empty ?LINT lines
15 ?RCS: Revision 3.0.1.1 1994/10/29 16:28:33 ram
16 ?RCS: patch36: call ./Cppsym explicitly instead of relying on PATH
18 ?RCS: Revision 3.0 1993/08/18 12:09:41 ram
19 ?RCS: Baseline for dist 3.0 netwide release.
21 ?MAKE:registers reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 reg9 reg10 reg11 \
22 reg12 reg13 reg14 reg15 reg16: awk rm Cppsym Myread Oldconfig
23 ?MAKE: -pick add $@ %<
25 ?S: This variable contains the number of register declarations paid
26 ?S: attention to by the C compiler.
29 ?S: This variable, along with reg2, reg3, etc. contains the eventual
30 ?S: value for the symbols register1, register2, register3, etc. It has
31 ?S: either the value "register" or is null.
34 ?C: This symbol, along with register2, register3, etc. is either the word
35 ?C: "register" or null, depending on whether the C compiler pays attention
36 ?C: to this many register declarations. The intent is that you don't have
37 ?C: to order your register declarations in the order of importance, so you
38 ?C: can freely declare register variables in sub-blocks of code and as
39 ?C: function parameters. Do not use register<n> more than once per routine.
41 ?LINT:describe reg2 reg3 reg4 reg5 reg6 reg7 reg8 reg9 reg10 reg11
42 ?LINT:describe reg12 reg13 reg14 reg15 reg16
43 ?LINT:known register2 register3 register4 register5 register6 register7
44 ?LINT:known register8 register9 register10 register11 register12 register13
45 ?LINT:known register14 register15 register16
46 ?H:#define register1 $reg1 /**/
47 ?H:#define register2 $reg2 /**/
48 ?H:#define register3 $reg3 /**/
49 ?H:#define register4 $reg4 /**/
50 ?H:#define register5 $reg5 /**/
51 ?H:#define register6 $reg6 /**/
52 ?H:#define register7 $reg7 /**/
53 ?H:#define register8 $reg8 /**/
54 ?H:#define register9 $reg9 /**/
55 ?H:#define register10 $reg10 /**/
56 ?H:#define register11 $reg11 /**/
57 ?H:#define register12 $reg12 /**/
58 ?H:#define register13 $reg13 /**/
59 ?H:#define register14 $reg14 /**/
60 ?H:#define register15 $reg15 /**/
61 ?H:#define register16 $reg16 /**/
64 : see how many register declarations we want to use
69 elif ./Cppsym sun mc68000 mips; then
71 elif ./Cppsym pyr; then
73 elif ./Cppsym ns32000 ns16000; then
75 elif ./Cppsym $smallmach; then
78 : if you have any other numbers for me, please send them in
83 ?LINT:set reg2 reg3 reg4 reg5 reg6 reg7 reg8 reg9 reg10 reg11
84 ?LINT:set reg12 reg13 reg14 reg15 reg16
87 Different C compilers on different machines pay attention to different numbers
88 of register declarations. About how many register declarations in each routine
89 does your C compiler pay attention to? (OK to guess)
92 rp="Maximum register declarations?"
96 $awk "BEGIN { for (i=1; i<=16; i++) printf \"reg%d=''\n\", i}" \
99 $awk "BEGIN { for (i=1; i<=$registers; i++) printf \"reg%d=register\n\", i}" \