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factor common awk functions for CFI generation scripts into new file

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There is a lot which could be common between i386 and x86_64, but none
of it will be useful for any other arch. These should be useful for
all archs, however.
This commit is contained in:
Alex Dowad 2015-10-02 13:32:32 +02:00 committed by Rich Felker
parent 2d51c4ad57
commit 0650a05947
3 changed files with 27 additions and 28 deletions
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2
Makefile
View File

@ -122,7 +122,7 @@ $(foreach s,$(wildcard src/*/$(ARCH)*/*.s),$(eval $(call mkasmdep,$(s))))
# Choose invocation of assembler to be used
# $(1) is input file, $(2) is output file, $(3) is assembler flags
ifeq ($(ADD_CFI),yes)
AS_CMD = LC_ALL=C awk -f tools/add-cfi.$(ARCH).awk $< | $(CC) -x assembler -c -o $@ -
AS_CMD = LC_ALL=C awk -f tools/add-cfi.common.awk -f tools/add-cfi.$(ARCH).awk $< | $(CC) -x assembler -c -o $@ -
else
AS_CMD = $(CC) -c -o $@ $<
endif

26
tools/add-cfi.common.awk Normal file
View File

@ -0,0 +1,26 @@
function hex2int(str, i) {
str = tolower(str)
for (i = 1; i <= 16; i++) {
char = substr("0123456789abcdef", i, 1)
lookup[char] = i-1
}
result = 0
for (i = 1; i <= length(str); i++) {
result = result * 16
char = substr(str, i, 1)
result = result + lookup[char]
}
return result
}
function parse_const(str) {
sign = sub(/^-/, "", str)
hex = sub(/^0x/, "", str)
if (hex)
n = hex2int(str)
else
n = str+0
return sign ? -n : n
}

27
tools/add-cfi.i386.awk
View File

@ -22,33 +22,6 @@ BEGIN {
called = ""
}
function hex2int(str, i) {
str = tolower(str)
for (i = 1; i <= 16; i++) {
char = substr("0123456789abcdef", i, 1)
lookup[char] = i-1
}
result = 0
for (i = 1; i <= length(str); i++) {
result = result * 16
char = substr(str, i, 1)
result = result + lookup[char]
}
return result
}
function parse_const(str) {
sign = sub(/^-/, "", str)
hex = sub(/^0x/, "", str)
if (hex)
n = hex2int(str)
else
n = str+0
return sign ? -n : n
}
function get_const1() {
# for instructions with 2 operands, get 1st operand (assuming it is constant)
match($0, /-?(0x[0-9a-fA-F]+|[0-9]+),/)