167 lines
3.3 KiB
Awk
167 lines
3.3 KiB
Awk
![]() |
#!/usr/bin/awk -f
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#
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# Copyright 2010 Ben Dooks <ben-linux@fluff.org>
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#
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# Released under GPLv2
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# example usage
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# ./clksrc-change-registers.awk arch/arm/plat-s5pc1xx/include/plat/regs-clock.h < src > dst
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function extract_value(s)
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{
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eqat = index(s, "=")
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comat = index(s, ",")
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return substr(s, eqat+2, (comat-eqat)-2)
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}
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function remove_brackets(b)
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{
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return substr(b, 2, length(b)-2)
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}
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function splitdefine(l, p)
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{
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r = split(l, tp)
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p[0] = tp[2]
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p[1] = remove_brackets(tp[3])
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}
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function find_length(f)
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{
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if (0)
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printf "find_length " f "\n" > "/dev/stderr"
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if (f ~ /0x1/)
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return 1
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else if (f ~ /0x3/)
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return 2
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else if (f ~ /0x7/)
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return 3
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else if (f ~ /0xf/)
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return 4
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printf "unknown legnth " f "\n" > "/dev/stderr"
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exit
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}
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function find_shift(s)
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{
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id = index(s, "<")
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if (id <= 0) {
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printf "cannot find shift " s "\n" > "/dev/stderr"
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exit
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}
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return substr(s, id+2)
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}
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BEGIN {
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if (ARGC < 2) {
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print "too few arguments" > "/dev/stderr"
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exit
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}
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# read the header file and find the mask values that we will need
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# to replace and create an associative array of values
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while (getline line < ARGV[1] > 0) {
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if (line ~ /\#define.*_MASK/ &&
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!(line ~ /USB_SIG_MASK/)) {
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splitdefine(line, fields)
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name = fields[0]
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if (0)
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printf "MASK " line "\n" > "/dev/stderr"
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dmask[name,0] = find_length(fields[1])
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dmask[name,1] = find_shift(fields[1])
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if (0)
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printf "=> '" name "' LENGTH=" dmask[name,0] " SHIFT=" dmask[name,1] "\n" > "/dev/stderr"
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} else {
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}
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}
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delete ARGV[1]
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}
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/clksrc_clk.*=.*{/ {
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shift=""
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mask=""
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divshift=""
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reg_div=""
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reg_src=""
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indent=1
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print $0
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for(; indent >= 1;) {
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if ((getline line) <= 0) {
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printf "unexpected end of file" > "/dev/stderr"
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exit 1;
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}
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if (line ~ /\.shift/) {
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shift = extract_value(line)
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} else if (line ~ /\.mask/) {
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mask = extract_value(line)
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} else if (line ~ /\.reg_divider/) {
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reg_div = extract_value(line)
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} else if (line ~ /\.reg_source/) {
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reg_src = extract_value(line)
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} else if (line ~ /\.divider_shift/) {
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divshift = extract_value(line)
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} else if (line ~ /{/) {
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indent++
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print line
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} else if (line ~ /}/) {
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indent--
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if (indent == 0) {
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if (0) {
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printf "shift '" shift "' ='" dmask[shift,0] "'\n" > "/dev/stderr"
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printf "mask '" mask "'\n" > "/dev/stderr"
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printf "dshft '" divshift "'\n" > "/dev/stderr"
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printf "rdiv '" reg_div "'\n" > "/dev/stderr"
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printf "rsrc '" reg_src "'\n" > "/dev/stderr"
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}
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generated = mask
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sub(reg_src, reg_div, generated)
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if (0) {
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printf "/* rsrc " reg_src " */\n"
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printf "/* rdiv " reg_div " */\n"
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printf "/* shift " shift " */\n"
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printf "/* mask " mask " */\n"
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printf "/* generated " generated " */\n"
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}
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if (reg_div != "") {
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printf "\t.reg_div = { "
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printf ".reg = " reg_div ", "
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printf ".shift = " dmask[generated,1] ", "
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printf ".size = " dmask[generated,0] ", "
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printf "},\n"
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}
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printf "\t.reg_src = { "
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printf ".reg = " reg_src ", "
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printf ".shift = " dmask[mask,1] ", "
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printf ".size = " dmask[mask,0] ", "
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printf "},\n"
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}
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print line
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} else {
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print line
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}
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if (0)
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printf indent ":" line "\n" > "/dev/stderr"
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}
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}
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// && ! /clksrc_clk.*=.*{/ { print $0 }
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