On Fri, 2014-10-31 at 16:45 -0700, Josh Triplett wrote: > I don't think we need the full generality of printf in the decompression > stub. I prefer Kees' patch, though I'd still like to see __puthex made > conditional.
Maybe use a statement expression macro instead?
Something like this could emit the right number of bits for any type
#define __puthex(val) \
({ \
typeof(val) value = val; \
char alpha[2] = {}; \
int bits; \
\
__putstr("0x"); \
for (bits = sizeof(value) * 8 - 4; bits >= 0; bits -= 4) { \
int digit = (value >> bits) & 0xf; \
\
if (digit < 10) \
alpha[0] = '0' + digit; \
else \
alpha[0] = 'a' + (digit - 10); \
\
__putstr(alpha); \
} \
})
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