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Adapted for PAREN_OPEN and PAREN_CLOSE, and better adaption for type-setter

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ceriel 1988-03-14 16:37:00 +00:00
parent 63a89b7080
commit 539e01b5bc
1 changed files with 15 additions and 8 deletions
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doc/top/top.n
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@ -1,6 +1,9 @@
.ND
.tr ~
.ds <.
.ds <,
.ds >. .
.ds >, ,
.ds [. [
.ds .] ]
.TL
@ -27,7 +30,6 @@ write such a table for a new machine.
It also discusses the implementation of the
Target Optimizer and its generator.
.AE
.bp
.NH 1
Introduction
.PP
@ -106,7 +108,6 @@ algorithm and to the definition of the table format.
Chapters 3 and 4 discuss the implementation of the target optimizer
and the target optimizer generator.
Appendix A gives full information for writing a description table.
.bp
.NH 1
Global structure of the target optimizer
.PP
@ -463,7 +464,6 @@ The keyword REST contains the mnemonic of the first instruction of
the rest of the input.
If this instruction uses the carry-bit (e.g. an adc, subc, bhis)
the transformation is not allowed.
.bp
.NH 1
Implementation of the target optimizer
.PP
@ -650,7 +650,6 @@ its current value (a string).
The restrictions on variables and the constraints are stored
in a switch-statement,
indexed by variable number and entry number respectively.
.bp
.NH 1
Implementation of the target optimizer generator
.PP
@ -696,6 +695,12 @@ Topgen maintains two symbol tables, one for variable names and one
for tunable parameters.
The symbol tables are organized as binary trees.
.bp
.NH 1
References
.[
$LIST$
.]
.bp
.SH
Appendix A
.PP
@ -751,6 +756,8 @@ MAXOPLEN 25
MAX_OPC_LEN 10
MAXVARLEN 25
MAXLINELEN 100
PAREN_OPEN not defined
PAREN_CLOSE not defined
.TE
.ce 1
table 1: parameter names and defaults
@ -774,6 +781,10 @@ As variables may be set by user routines (see "bitw" example for
the Vax) the table-writer must have access to this length and
must be able to change it.
MAXLINELEN denotes the maximum length of a line of assembly code.
PAREN_OPEN and PAREN_CLOSE must be used when the operand separator can also
occur within operands, between parentheses of some kind. In this case,
PAREN_OPEN must be set to a string containing the opening parentheses, and
PAREN_CLOSE must be set to a string containing the closing parentheses.
.PP
If a line of assembly code violates any of the assumptions or
exceeds some limit,
@ -856,7 +867,3 @@ user_routines -> anything .
.ft R
.DE
The remainder of the table consists of user-defined subroutines.
.bp
.[
$LIST$
.]