+++ /dev/null
-#!/bin/sh
-#
-# If your shell doesn't support functions (true for some BSD users),
-# you might try using GNU's bash.
-#
-#ident "@(#) m88k-move.sh 1-Sep-92"
-#
-# This file provided by Data General, February 1990.
-#
-# This script generates the necessary movstr library functions
-# for the m88100. These functions are called from the expansion
-# of movstrsi. There are eight modules created by this script,
-# each with multiple entry points. One module, moveSI64n
-# implements a word aligned loop; the other modules, moveXINx
-# implement a straight line copy of N bytes in mode XI.
-#
-# By analysis of the best memcpy function, it can be determined
-# what appear to be certain magic numbers. For example, a
-# memcpy of 13 bytes, where the pointers are determined at run
-# time to be word aligned takes 28 cycles. A call to
-# __movstrQI13x13 also takes 28 cycles. The break even point
-# for a HImode copy is 38 bytes. Just to be on the safe side,
-# these are bumped to 16 and 48 respectively.
-#
-# The smaller, odd-remainder modules are provided to help
-# mitigate the overhead of copying the last bytes.
-#
-# Changes to these functions should not be taken lightly if you
-# want to be able to link programs built with older movstr
-# parameters.
-#
-#.Revision History
-#
-# 1-Sep-92 Stan Cox Added moveDI96x, moveDI41x through moveDI47x.
-# 2-Jan-92 Tom Wood Renamed files to comply with SVR3 14 char limit.
-# 26-Oct-90 Tom Wood Delete movstr.h; moved to out-m88k.c.
-# 17-Oct-90 Tom Wood Files are named *.asm rather than *.s.
-# 11-Sep-90 Jeffrey Friedl
-# On my BSD 4.3 awk and my GNU-awk, only the
-# first character of an argument to -F is passed
-# through, so I can't get this to work.
-# 5-Sep-90 Ray Essick/Tom Wood
-# Added a -no-tdesc option.
-# 27-Aug-90 Vince Guarna/Tom Wood
-# Version 3 assembler syntax (-abi).
-# 16-Aug-90 Ron Guilmette
-# Avoid problems on a Sparc. The common
-# denominator among shells seems to be '...\'
-# rather than '...\\'.
-# 15-Aug-90 Ron Guilmette
-# Avoid awk syntax errors on a Sun by not using
-# the `!' operator.
-# 22-Feb-90 Tom Wood Created.
-# 20-Jun-90 Tom Wood Emit file directives.
-#
-#.End]=--------------------------------------------------------------*/
-
-usage() {
- echo "usage: $0 [ -abi ] [ -no-tdesc ]" 1>&2
- exit 1
-}
-
-awk_flag="-F:";
-awk_begin="BEGIN { "
-ps=""; us="_"; tf="x"; la="@L"; fb="8"; nt="";
-do_file() {
- echo " file $1";
-}
-
-while [ $# -gt 0 ] ; do
- case $1 in
- -no-tdesc) awk_begin="$awk_begin no_tdesc=1;"
- nt=";";;
- -abi) awk_begin="$awk_begin abi=1;"
- ps="#"; us=""; tf="a"; la=".L"; fb="16";
- do_file() {
- echo ' version "03.00"';
- echo " file $1";
- };;
- *) usage;;
- esac
- shift
-done
-
-rm -f move?I*[xn].s move?I*[xn].asm
-
-#.Implementation_continued[=-----------------------------------------------
-#
-# This generates the word aligned loop. The loop is entered
-# from the callable entry points ___movstrSI64nN, where at
-# least N bytes will be copied. r2 is the destination pointer
-# offset by 4, r3 is the source pointer offset by 4, r6 is the
-# loop count. Thus, the total bytes moved is 64 * r6 + N. The
-# first value is preloaded into r4 or r5 (r4 if N/4 is odd;
-# r5 if N/4 is even). Upon returning, r2 and r3 have been
-# updated and may be used for the remainder bytes to move.
-#
-# The code for this loop is generated by the awk program
-# following. Edit *it*, not what it generates!
-#
-#.End]=------------------------------------------------------------------*/
-
-gen_movstrN() {
- awk $awk_flag "$awk_begin"'
- if (abi) {
- ps="#"; us=""; tf="a"; la=".L"; fb=16;
- } else {
- ps=""; us="_"; tf="x"; la="@L"; fb=8;
- }
- }
- NR == 1 && NF == 4 {
- mode = $1; suffix = $2; align = $3; count = $4;
- ld = align; st = 0;
-
- printf "; The following was calculated using awk.\n";
- printf "\ttext\n";
- printf "\talign\t%d\n", fb;
- printf "%sloop%s%d:\n", la, mode, count * align;
- printf "\taddu\t%sr3,%sr3,%d\n", ps, ps, count * align;
- printf "\taddu\t%sr2,%sr2,%d\n", ps, ps, count * align;
- printf "\tsubu\t%sr6,%sr6,1\n", ps, ps;
- for (r = count + 1; r >= 1; r--) {
- evenp = r % 2;
- name = sprintf("__%smovstr%s%dn%d", us, mode, count * align, r * align);
- if (r > 1) {
- printf "\tglobal\t%s\n", name;
- printf "%s:\n", name;
- }
- if (r > 2) {
- printf "\tld%s\t%sr%d,%sr3,%d\n", suffix, ps, 4 + evenp, ps, ld;
- printf "\tst%s\t%sr%d,%sr2,%d\n", suffix, ps, 5 - evenp, ps, st;
- } else if (r == 2) {
- printf "\tld%s\t%sr%d,%sr3,%d\n", suffix, ps, 4 + evenp, ps, ld;
- printf "\tbcnd.n\t%sgt0,%sr6,%sloop%s%d\n", ps, ps, la, mode, count * align;
- printf "\tst%s\t%sr%d,%sr2,%d\n", suffix, ps, 5 - evenp, ps, st;
- printf "\tjmp.n\t%sr1\n", ps;
- } else {
- printf "\tst%s\t%sr%d,%sr2,%d\n", suffix, ps, 5 - evenp, ps, st;
- }
- ld += align; st += align;
- }
- if (!no_tdesc) {
- printf "%send%s%d:\n", la, mode, count * align;
- printf "\tsection\t.tdesc,\"%s\"\n", tf;
- printf "\tword\t0x42,1,%sloop%s%d", la, mode, count * align;
- printf ",%send%s%d\n", la, mode, count * align;
- printf "\tword\t0x0100001f,0,1,0\n";
- printf "\ttext\n";
- }
- printf "; End of awk generated code.\n";
- exit;
- }'
-}
-
-(do_file '"movstrSI64n.s"';
- echo 'SI::4:16' | gen_movstrN) > moveSI64n.asm
-
-#.Implementation_continued[=-----------------------------------------------
-#
-# This generates the even-remainder, straight-line modules.
-# The code is entered from the callable entry points
-# ___movstrXINxM, where exactly M bytes will be copied in XI
-# mode. r2 is the destination pointer, r3 is the source
-# pointer, neither being offset. The first value is preloaded
-# into r4 or r5 (r4 if M-N/B is even; r5 if M-N/B is odd, where
-# B is the mode size of XI). Upon returning, r2 and r3 have not
-# been changed.
-#
-# The code for these cases is generated by the awk program
-# following. Edit *it*, not what it generates!
-#
-#.End]=------------------------------------------------------------------*/
-
-gen_movstrX0() {
- awk $awk_flag "$awk_begin"'
- if (abi) {
- ps="#"; us=""; tf="a"; la=".L"; fb=16;
- } else {
- ps=""; us="_"; tf="x"; la="@L"; fb=8;
- }
- }
- NR == 1 && NF == 4 {
- mode = $1; suffix = $2; align = $3; bytes = $4;
- ld = align; st = 0; count = bytes / align;
- reg[0] = 4; if (align == 8) reg[1] = 6; else reg[1] = 5;
- printf "; The following was calculated using awk.\n";
- printf "\ttext\n";
- printf "\talign\t%d\n", fb;
- for (r = count; r >= 1; r--) {
- evenp = r % 2;
- name = sprintf("__%smovstr%s%dx%d", us, mode, count * align, r * align);
- if (r > 1) {
- printf "\tglobal\t%s\n", name;
- printf "%s:\n", name;
- }
- if (r == 1)
- printf "\tjmp.n\t%sr1\n", ps;
- else
- printf "\tld%s\t%sr%d,%sr3,%d\n", suffix, ps, reg[evenp], ps, ld;
- printf "\tst%s\t%sr%d,%sr2,%d\n", suffix, ps, reg[1-evenp], ps, st;
- ld += align; st += align;
- }
- if (!no_tdesc) {
- printf "%send%s%dx:\n", la, mode, count * align;
- printf "\tsection\t.tdesc,\"%s\"\n", tf;
- printf "\tword\t0x42,1,__%smovstr%s%dx%d", us, mode, count * align, count * align;
- printf ",%send%s%dx\n", la, mode, count * align;
- printf "\tword\t0x0100001f,0,1,0\n";
- printf "\ttext\n";
- }
- printf "; End of awk generated code.\n"
- exit;
- }'
-}
-
-(do_file '"movstrQI16x.s"';
- echo 'QI:.b:1:16' | gen_movstrX0) > moveQI16x.asm
-(do_file '"movstrHI48x.s"';
- echo 'HI:.h:2:48' | gen_movstrX0) > moveHI48x.asm
-(do_file '"movstrSI96x.s"';
- echo 'SI::4:96' | gen_movstrX0) > moveSI96x.asm
-(do_file '"movstrDI96x.s"';
- echo 'DI:.d:8:96' | gen_movstrX0) > moveDI96x.asm
-
-#.Implementation_continued[=-----------------------------------------------
-#
-# This generates the odd-remainder, straight-line modules. The
-# interface is the same as that for the even-remainder modules.
-#
-#.End]=------------------------------------------------------------------*/
-
-gen_movstrXr() {
- awk $awk_flag "$awk_begin"'
- if (abi) {
- ps="#"; us=""; tf="a"; la=".L"; fb=16;
- } else {
- ps=""; us="_"; tf="x"; la="@L"; fb=8;
- }
- }
- NR == 1 && NF == 4 {
- mode = $1; rem = $2; most = $3; count = $4;
- suffix[1] = ".b"; suffix[2] = ".h"; suffix[4] = ""; suffix[8] = ".d";
-
- prev = align = most;
- ld = align; st = 0; total = count - rem - most;
- evenp = int(total/align) % 2;
- reg[0] = 4; if (align == 8) reg[1] = 6; else reg[1] = 5;
- printf "; The following was calculated using awk.\n";
- printf "\ttext\n";
- printf "\talign\t%d\n", fb;
- for (bytes = total; bytes >= 0; bytes -= align) {
- if (bytes < align) {
- if (bytes >= 4) align = 4;
- else if (bytes >= 2) align = 2;
- else align = 1;
- }
- name = sprintf("__%smovstr%s%dx%d", us, mode, total + most, bytes + most);
- if (bytes > most) {
- printf "\tglobal\t%s\n", name;
- printf "%s:\n", name;
- }
- if (bytes == 0)
- printf "\tjmp.n\t%sr1\n", ps;
- else
- printf "\tld%s\t%sr%d,%sr3,%d\n", suffix[align], ps, reg[evenp], ps, ld;
- printf "\tst%s\t%sr%d,%sr2,%d\n", suffix[prev], ps, reg[1-evenp], ps, st;
- ld += align; st += prev; prev = align;
- evenp = 1 - evenp;
- }
- if (!no_tdesc) {
- printf "%send%s%dx:\n", la, mode, total + most;
- printf "\tsection\t.tdesc,\"%s\"\n", tf;
- printf "\tword\t0x42,1,__%smovstr%s%dx%d", us, mode, total + most, total + most;
- printf ",%send%s%dx\n", la, mode, total + most;
- printf "\tword\t0x0100001f,0,1,0\n";
- printf "\ttext\n";
- }
- printf "; End of awk generated code.\n"
- exit;
- }'
-}
-
-(do_file '"movstrDI47x.s"';
- echo 'DI:1:8:48' | gen_movstrXr) > moveDI47x.asm
-(do_file '"movstrDI46x.s"';
- echo 'DI:2:8:48' | gen_movstrXr) > moveDI46x.asm
-(do_file '"movstrDI45x.s"';
- echo 'DI:3:8:48' | gen_movstrXr) > moveDI45x.asm
-(do_file '"movstrDI44x.s"';
- echo 'DI:4:8:48' | gen_movstrXr) > moveDI44x.asm
-(do_file '"movstrDI43x.s"';
- echo 'DI:5:8:48' | gen_movstrXr) > moveDI43x.asm
-(do_file '"movstrDI42x.s"';
- echo 'DI:6:8:48' | gen_movstrXr) > moveDI42x.asm
-(do_file '"movstrDI41x.s"';
- echo 'DI:7:8:48' | gen_movstrXr) > moveDI41x.asm
-
-(do_file '"movstrSI47x.s"';
- echo 'SI:1:4:48' | gen_movstrXr) > moveSI47x.asm
-(do_file '"movstrSI46x.s"';
- echo 'SI:2:4:48' | gen_movstrXr) > moveSI46x.asm
-(do_file '"movstrSI45x.s"';
- echo 'SI:3:4:48' | gen_movstrXr) > moveSI45x.asm
-
-(do_file '"movstrHI15x.s"';
- echo 'HI:1:2:16' | gen_movstrXr) > moveHI15x.asm
projects / msp430-gcc.git / blobdiff