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author | Alex Dowad <alexinbeijing@gmail.com> | 2015-10-02 13:32:32 +0200 |
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committer | Rich Felker <dalias@aerifal.cx> | 2015-10-08 21:03:10 +0000 |
commit | 0650a05947c9f67cedff693d2e1c2f61a8e6c0d3 (patch) | |
tree | b586b689f6edd5538caf8801dca87b64a1ca84d1 /tools/add-cfi.common.awk | |
parent | 2d51c4ad57d5cbb083b5bce94ff692490c10ee2d (diff) | |
download | musl-0650a05947c9f67cedff693d2e1c2f61a8e6c0d3.tar.gz musl-0650a05947c9f67cedff693d2e1c2f61a8e6c0d3.tar.bz2 musl-0650a05947c9f67cedff693d2e1c2f61a8e6c0d3.tar.xz musl-0650a05947c9f67cedff693d2e1c2f61a8e6c0d3.zip |
factor common awk functions for CFI generation scripts into new file
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.
Diffstat (limited to 'tools/add-cfi.common.awk')
-rw-r--r-- | tools/add-cfi.common.awk | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/add-cfi.common.awk b/tools/add-cfi.common.awk new file mode 100644 index 00000000..04482d43 --- /dev/null +++ b/tools/add-cfi.common.awk @@ -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 +} |